DESCRIPTION
HEAT EXCHANGE DEVICE AND DEVICE FOR RECEIVING HEAT GENERATION
BODY
TECHNICAL FIELD
The present invention relates to a heat exchange device
and a device for a receiving heat generation body using the
same.
BACKGROUND ART
In recent years, with the development of
telecommunication networks, the number of cellular phones has
increased dramatically compared to the number of fixed-line
phones, and a number of base stations of cellular phones have
been installed accordingly. From a certain perspective, the
base stations of cellular phones may be regarded as extremely
large heat generation bodies or sources from the viewpoint of
the fact that they consume power, because an electric current
of several tens of amperes or higher, for example, flows
therethrough. In a cellular phone base station which serves
as such a heat generation body, since many electronic devices
are installed in the base station, there is a problem in that
the operating temperature of the electronic devices rises due
to heat generated from the base station itself, thus disturbing
stable operation.
To solve such a problem, it is very important to cool
down the base station serving as a heat generation body in order
to ensure the long-term stable operation of the many electronic
devices in the base station. In the related art, such a
cellular phone base station has a configuration as described
below so as to achieve cooling of the base station itself.
That is to say, a device for receiving a heat generation
body as a cellular phone base station is configured to include
a cabinet that receives electronic devices such as a
transmitter or a receiver serving as a heat generation body
and a heat exchange device mounted on an opening of the cabinet.
The heat exchange device has a structure as described below,
for example.
That is to say, the heat exchange device is configured
to include a body case having a first intake port and a first
discharge port for outside air and a second intake port and
a second discharge port for air inside the cabinet, a blast
fan, and a heat exchanger. Here, the blast fan is configured
to include a first blast fan for outside air and a second blast
fan for air inside the cabinet which are provided in the body
case. Moreover, the heat exchanger performs heat exchange
between the outside air and the air inside the cabinet in the
body case.
The heat exchanger has a structure, for example, in which
a second plate member is stacked on the surface of a first plate
member with a predetermined gap therebetween, and a third plate
member is stacked on the surface of the second plate member
with a predetermined gap therebetween. A plurality of first
rectification walls that partitions the surface of the first
plate member into a lane shape is provided on the surface of
the first plate member opposing the second plate member.
Moreover, a plurality of second rectification walls that
partitions the surface of the second plate member into a lane
shape is provided on the surface of the second plate member
opposing the third plate member.
As prior art citation information related to the
invention of this application, Patent Citation 1 is known, for
example.
In the heat exchanger of the conventional heat exchange
device described above, rectification walls are provided on
the surface of the first plate member and the second plate
member, for example. In this way, the outside air and the air
inside the cabinet can flow smoothly and uniformly over the
large surfaces of the first plate member and the second plate
member, thus increasing the heat exchange efficiency of the
heat exchanger.
When producing such a heat exchanger, the first plate
member and the second plate member can be formed relatively
easily by integral molding. For example, the use of synthetic
resin or the like enables forming the rectification walls at
once. Therefore, it can be said that the heat exchanger can
be produced with extremely high productivity.
However, in many cases, since the cellular phone base
station is installed outdoors, if the outside air temperature
is high, the internal temperature of the cabinet will rise too
high. When the internal temperature rises to such a high
temperature, in the heat exchanger made from synthetic resin
or the like, the first plate member and the second plate member
will thermally expand because they are made from synthetic
resin. As a result, the expanded walls of these plate members
may sag between the rectification walls. Thus, there is a
problem in that the flow of air is not rectified smoothly, the
air-flow resistance increases, and the heat exchange
efficiency decreases.
Patent Citation 1: JP-A-10-170176
DISCLOSURE OF THE INVENTION
The present invention solves the above-mentioned
problems and provides a heat exchange device capable of stably
operating with high heat exchange efficiency and high
mass-productivity.
A heat exchange device of the present invention includes
a body case having a first intake port and a first discharge
port for a first environment, and a second intake port and a
second discharge port for a second environment; a first blast
fan for the first environment and a second blast fan for the
second environment which are provided in the body case; and
a heat exchanger that performs heat exchange between air of
the first environment and air of the second environment in the
body case. The heat exchanger has a structure in which a second
synthetic resin-made plate member is stacked on the surface
of a first synthetic resin-made plate member with a
predetermined gap therebetween, and a third synthetic
resin-made plate member is stacked on the surface of the second
plate member with a predetermined gap therebetween. A
plurality of first rectification walls that partitions the
surface of the first plate member into a lane shape is formed
on the surface of the first plate member to confront the second
plate member, , a plurality of second rectification walls that
partitions the surface of the second plate member into a lane
shape is formed on the surface of the second plate member to
confront the third plate member, , and a plurality of third
rectification walls that partitions the surface of the third
plate member into a lane shape is formed on the surface of the
third plate member opposite to the second plate member. First
protrusions are provided on parts of the first rectification
walls of the first plate member so as to protrude into first
recessed portions which are formed on the second rectification
walls, confronting the first plate member, of the second plate
member, and second protrusions are provided on parts of the
second rectification walls of the second plate member so as
to protrude into second recessed portions which are formed on
the third rectification walls, confronting the second plate
member, of the third plate member.
With such a configuration, it is possible to decrease
air-flow resistance and to thus achieve smooth rectification
of the flow of air. Therefore, it is possible to realize a
heat exchange device capable of operating stably with high heat
exchange efficiency and high mass-productivity.
That is to say, in the heat exchange device of the present
invention, the plurality of first rectification walls
partitioning the surface of the first plate member into a lane
shape and the plurality of second rectification walls
partitioning the surface of the second plate member into a lane
shape are provided, respectively. In this way, it is possible
to form a uniform flow of air over approximately the entire
surface of the first plate member and the second plate member
by the first rectification walls and the second rectification
walls and to thus perform smooth rectification of the flow of
air.
Furthermore, in the portion where the uniform flow of
air is formed, the first protrusions are provided in a part
of the first rectification walls of the first plate member so
as to protrude into the first recessed portions on the side
of the first plate member, and the second protrusions are
provided in a part of the second rectification walls of the
second plate member so as to protrude into the second recessed
portions on the side of the second plate member. In this way,
even when a temperature rise such as increased air temperature
occurs, the first plate member, the second plate member, and
the third plate member are prevented from being greatly
deformed in the direction towards their adjacent plate member,
whereby the air-flow path on the surfaces of the plate members
is prevented from being narrowed or blocked. As a result, it
is possible to achieve smooth rectification of the flow of air,
decrease the air-flow resistance, and improve the heat exchange
efficiency. Therefore, it is possible to realize a heat
exchange device capable of operating stably with high heat
exchange efficiency.
Moreover, a heat exchange device of the present invention
includes a body case having a first intake port and a first
discharge port for a first environment, and a second intake
port and a second discharge port for a second environment; a
first blast fan for the first environment and a second blast
fan for the second environment which are provided in the body
case; and a heat exchanger that performs heat exchange between
air of the first environment and air of the second environment
in the body case. The heat exchanger has a structure in which
a second synthetic resin-made plate member is stacked on the
surface of a first synthetic resin-made plate member with a
predetermined gap therebetween, and a third synthetic
resin-made plate member is stacked on the surface of the second
plate member with a predetermined gap therebetween. A
plurality of first rectification walls that partitions the
surface of the first plate member into a lane shape is formed
on the surface of the first plate member to confront the second
plate member, , and a plurality of second rectification walls
that partitions the surface of the second plate member into
a lane shape is formed on the surface of the second plate member
to confront the third plate member,. First protrusions are
provided between the first plurality of rectification walls
on the surface, confronting the second plate member, of the
first plate member so as to protrude towards the second plate
member, and second protrusions are provided between the second
plurality of rectification walls on the surface, confronting
the third plate member, of the second plate member so as to
protrude towards the third plate member.
With such a configuration, it is possible to decrease
air-flow resistance and to thus achieve smooth rectification
of the flow of air. Therefore, it is possible to realize a
heat exchange device capable of operating stably with high heat
exchange efficiency and high mass-productivity.
That is to say, in the heat exchange device of the present
invention, the plurality of first rectification walls that
partitions the surface of the first plate member into a lane
shape and the plurality of second rectification walls that
partitions the surface of the second plate member into a lane
shape are provided. Moreover, the first protrusions are
provided between the first plural rectification walls so as
to protrude towards the second plate member, and the second
protrusions are provided between the second plurality of
rectification walls so as to protrude towards the third plate
member.
In this way, it is possible to form a uniform flow of
air over approximately the entire surface of the first plate
member and the second plate member by the first rectification
walls and the second rectification walls. Moreover, since the
first protrusions and the second protrusions are provided in
the portion where the uniform flow of air is formed, even when
a situation such as increased air temperature occurs, the
air-flow path is prevented from being narrowed or blocked. As
a result, it is possible to achieve smooth rectification of
the flow of air, decrease the air-flow resistance, and improve
the heat exchange efficiency. Therefore, it is possible to
realize a heat exchange device capable of operating stably with
high heat exchange efficiency.
Moreover, a device for accommodating a heat generation
body of the present invention includes a cabinet for
accommodating a heat generation body and the above-mentioned
heat exchange device mounted to an opening of the cabinet.
With such a configuration, i't is possible to realize a
device for accommodating a heat generation body, accommodating
a heat exchange device which is capable of operating stably
with high heat exchange efficiency.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a perspective view showing an installation
example of a heat exchange device according to Embodiment 1
of the present invention.
Fig. 2 is a cross-sectional view of the heat exchange
device according to Embodiment 1 of the present invention.
Fig. 3 is an exploded perspective view of the heat
exchange device according to Embodiment 1 of the present
invention.
Fig. 4 is a perspective view of the heat exchange device
according to Embodiment 1 of the present invention.
Fig. 5A is an exploded perspective view of the heat
exchanger of the heat exchange device according to Embodiment
1 of the present invention.
Fig. 5B is a perspective view of the heat exchanger of
the heat exchange device according to Embodiment 1 of the
present invention.
Fig. 6 is a perspective view of the heat exchanger of
the heat exchange device according to Embodiment 1 of the
present invention.
Fig. 7 is a cross-sectional view of the heat exchanger
of the heat exchange device, taken along the line A-A of Fig.
5B.
Fig. 8 is a top plan view of the heat exchanger of another
heat exchange device according to Embodiment 1 of the present
invention.
Fig. 9 is an exploded perspective view of the heat
exchanger of another heat exchange device according to
Embodiment 1 of the present invention.
Fig. 10 is a partial enlarged perspective view of the
heat exchanger of another heat exchange device according to
Embodiment 1 of the present invention.
Fig. 11 is a partial enlarged perspective view of the
heat exchanger of a still another heat exchange device
according to Embodiment 1 of the present invention.
Fig. 12 is an exploded perspective view of the heat
exchanger of a heat exchange device according to Embodiment
2 of the present invention.
Fig. 13 is a perspective view of the heat exchanger of
the heat exchange device according to Embodiment 2 of the
present invention.
Fig. 14A is a perspective view of a main part of the heat
exchanger of the heat exchange device according to Embodiment
2 of the present invention.
Fig. 14B is an enlarged perspective view of the part
surrounded by the broken line in Fig. 14A.
Fig. 15A is a perspective view of a main part of the heat
exchanger of the heat exchange device according to Embodiment
2 of the present invention.
Fig. 15B is an enlarged perspective view of the part
surrounded by the broken line in Fig. 15A.
DESCRIPTION OF REFERENCE NUMERALS AND SIGNS
1: BUILDING
2: ROOFTOP
3: BASE STATION
4: DEVICE FOR ACCOMMODATING HEAT GENERATION BODY
(CABINET)
5: TRANSCEIVER
6: HEAT EXCHANGE DEVICE
7: FIRST INTAKE PORT
8: FIRST DISCHARGE PORT
9: SECOND INTAKE PORT
10: SECOND DISCHARGE PORT
11: BODY CASE
12: FIRST BLAST FAN
13: SECOND BLAST FAN
14, 114: HEAT EXCHANGER
15, 115: FIRST PLATE MEMBER
15a, 16a, 115a, 116a: ONE END
15b, 16b, 115b, 116b: THE OTHER END
15c, 115c: FIRST LONG SIDE
16, 116: SECOND PLATE MEMBER
16c, 116c: SECOND LONG SIDE
17, 117: THIRD PLATE MEMBER
17a, 117a: FOURTH PLATE MEMBER
18, 20, 118, 120: INLET PORT
19, 21, 119, 121: OUTLET PORT
22, 122: FIRST RECTIFICATION WALL
23, 123: SECOND RECTIFICATION WALL
24: THIRD RECTIFICATION WALL
25: FIRST RECESSED PORTION
25a: SECOND RECESSED PORTION
25b: THIRD RECESSED PORTION
26, 124: FIRST PROTRUSION
27, 125: SECOND PROTRUSION
28, 126: FIRST CURVED PORTION
29, 127: SECOND CURVED PORTION
30: FIRST SEALING PROTRUSION
30a: SECOND SEALING PROTRUSION
128: CURVED FACE
PREFERRED EMBODIMENTS FOR CARRYING OUT THE INVENTION
Hereinafter, exemplary embodiments of the present
invention will be described with reference to the drawings.
In the drawings below, the same elements are denoted by the
same reference numerals, and description thereof may sometimes
be omitted.
Embodiment 1
Fig. 1 is a perspective view showing an installation
example of a heat exchange device according to Embodiment 1
of the present invention.
As shown in Fig. 1, base station 3 of cellular phones
is installed on rooftop 2 of building 1. Base station 3
includes box-like cabinet 4 which is a device for accommodating
a heat generation body, transceiver 5 provided in cabinet 4,
and heat exchange device 6 which is provided to an opening of
the front surface of cabinet 4 so as to be openable like a door.
Transceiver 5 incorporates therein electronic equipment such
as a transmitter or a receiver.
Fig. 2 is a cross-sectional view of the heat exchange
device according to Embodiment 1 of the present invention. Fig.
3 is an exploded perspective view of the heat exchange device
according to Embodiment 1 of the present invention. Fig. 4
is a perspective view of the heat exchange device according
to Embodiment 1 of the present invention.
As shown in Figs. 2 to 4, heat exchange device 6 is
provided with body case 11, first blast fan 12 for outside air
(hereinafter referred to as "first environment") and second
blast fan 13 for air inside cabinet 4 (hereinafter referred
to as "second environment") which are provided in body case
11, and heat exchanger 14. Here, body case 11 has first intake
port 7 and first discharge port 8 for the first environment
and second intake port 9 and second discharge port 10 for the
second environment. Heat exchanger 14 performs heat exchange
in body case 11 between the outside air and the air inside
cabinet 4.
Fig. 5A is. an exploded perspective view of the heat
exchanger of the heat exchange device according to Embodiment
1 of the present invention. Fig. 5B is a perspective view of
the heat exchanger of the heat exchange device according to
Embodiment 1 of the present invention. Fig. 6 is a perspective
view of the heat exchanger of the heat exchange device according
to Embodiment 1 of the present invention.
As shown in Figs. 5A, 5B, and 6, heat exchanger 14 has
a structure, for example, in which second synthetic resin-made
plate member 16 is stacked on the surface of first synthetic
resin-made plate member 15 with a predetermined gap
therebetween, and third synthetic resin-made plate member 17
is stacked on the surface of second plate member 16 with a
predetermined gap therebetween, as shown in Fig. 6. Here,
plate members 15, 16, and 17 are made from synthetic resin due
to its good moldability and high mass-productivity, and other
similar materials having the same properties may be used.
Moreover, plate members 15, 16, and 17 have a rectangular shape
in this example. In Fig. 5A, although three plate members 15,
16, and 17 are stacked, a plurality of plate members may be
stacked, for example, by stacking additional fourth plate
member 17a and the like above third plate member 17. A
perspective view of heat exchanger 14 obtained by stacking the
plurality of plate members shown in Fig. 5A to be integrated
therewith is shown in Fig. 5B.
The top surface (in Fig. 6) of heat exchanger 14 stacked
thus serves as inlet 18 in which the air inside cabinet 4 is
drawn via second intake port 9. The air drawn from inlet port
18 into heat exchanger 14 is discharged into cabinet 4 via
outlet port 19 which is provided on the right side of the lower
part in Fig. 6. The discharged air is used for cooling down
transceiver 5 which is disposed opposite heat exchanger 14
shown in Fig. 1.
The outside air from the outside of cabinet 4 is drawn
from inlet port 20, which is provided on the lower surface in
Fig. 6, and is discharged as outside air to the outside of
cabinet 4 via outlet port 21 which is provided on the left side
of the upper part.
Although such a ventilation will be described in further
detail later, heat exchanger 14 performs heat exchange between
the outside air and the inside air of cabinet 4, thus cooling
down transceiver 5 using the outside air.
That is to say, since electric current of several tens
of amperes or more flows through transceiver 5, transceiver
5 generates heat by consuming this electric current and the
temperature thereof will rise accordingly. When such a
temperature rise resulting from the heat generated from
transceiver 5 itself is left as it is, the characteristics of
the electronic equipment or the like provided in transceiver
5 may become unstable. Therefore, as described above,
Embodiment 1 has a structure in which heat exchanger 14 performs
heat exchange between the outside air and the air flowing inside
cabinet 4 to cool down the inside air, thus cooling down and
suppressing heat generation of transceiver 5, and preventing
the operation of transceiver 5 from becoming unstable.
Heat exchanger 14 described above is obtained by
sequentially stacking second rectangular synthetic resin-made
plate member 16 on the surface of first rectangular synthetic
resin-made plate member 15 and third synthetic resin-made plate
member 17 on the surface of second plate member 16 as shown
in Fig. 5A.
More specifically, a plurality of first rectification
walls 22 that partitions the surface of first plate member 15
into a lane shape is provided on the surface of first plate
member 15 to confront the second plate member 16. Moreover,
a plurality of second rectification walls 23 that partitions
the surface of second plate member 16 into a lane shape is
provided on the surface of second plate member 16 to confront
the third plate member 17. Furthermore, third rectification
walls 24 that protrude towards a side opposite to second plate
member 16 are provided on the surface of third plate member
17.
Fig. 7 is a cross-sectional view of heat exchanger 14
of the heat exchange device, taken along the line A-A of Fig.
5B. As shown in Fig. 7, first protrusions 26 are provided on
a part of first rectification walls 22 of first plate member
15 so as to protrude into first recessed portions 25 formed
on the lower surface side of second plate member 16 close to
first plate member 15 when second rectification walls 23 are
formed in second plate member 16. Moreover, second
protrusions 27 are provided on a part of second rectification
walls 23 of second plate member 16 so as to protrude into second
recessed portions 25a which are formed on the lower surface
side of third plate member 17 close to second plate member 16
when third rectification walls 24 are formed in third plate
member 17.
As understood from the structures shown in Figs. 5A, 5B,
and 6, plate members 15, 16, and 17 have a vertically
rectangular shape, and first plate member 15 has first
rectification walls 22 which extend in a straight line from
one end thereof 15a (the lower end) towards the other end 15b
(the upper end) . Moreover, first rectification walls 22 have
a curved shape that is curved in front of the other end 15b
towards first long side 15c which is on the left side in Fig.
5A, whereby portions of first rectification walls 22
corresponding to first long side 15c serve as outlet port 21.
Moreover, second plate member 16 has second
rectification walls 23 which extend in a straight line from
the other end 16b (the upper end) towards one end thereof 16a
(the lower end) . Second rectification walls 23 have a curved
shape that is curved in front of one end 16a towards second
long side 16c which is on the right side in Fig. 5A, whereby
portions of second rectification walls 23 corresponding to
second long side 16c serve as outlet port 19.
Furthermore, subsequently, although third plate member
17 and fourth plate member 17a are similarly stacked
alternately, description thereof will be provided briefly in
order to avoid redundant description. It should be noted that
third plate member 17 may be the same as that used as first
plate member 15, and fourth plate member 17a stacked
subsequently on third plate member 17 may be the same as that
used as second plate member 16.
In addition, as shown in Fig. 5A, first curved portion
28, which is provided to first plate member 15 so as to be curved
towards first long side 15c, and second curved portion 29, which
is provided to second plate member 16 so as to be curved towards
second long side 16c, are configured to increase the-gap between
first rectification walls 22 and the gap between second
rectification walls 23, respectively, thus preventing any
possible increase in air-flow resistance.
That is to say, when first rectification walls 22 or
second rectification walls 23 are formed in first curved
portion 28 or second curved portion 29 of first plate member
15 or second plate member 16 with the same density as on first
long side 15c or second long side 16c, the air-flow path will
be curved and the air-flow resistance will increase.
In order to prevent this, in first curved portion 28,
the gap, namely the distance, between the adjacent ones of first
rectification walls 22 is set to be larger than that in the
straight-line portion of first rectification wall 22.
Moreover, in second curved portion 29, the gap, namely
the distance, between the adjacent ones of second rectification
walls 23 is set to be larger than that in the straight-line
portion of second rectification walls 23.
When observing second curved portion 29 of second plate
member 16, first rectification walls 22 and third rectification
walls 24 which are perpendicular to second curved portion 29
are formed on portions of first plate member 15 and third plate
member 17 disposed adjacent to second curved portion 29.
Therefore, even when the gap between the adjacent ones of second
rectification walls 23 in second curved portion 29 is increased,
the adjacent wall surfaces of first plate member 15 or third
plate member 17 will not protrude due to thermal expansion.
However, in Embodiment 1, a curved face which is
substantially perpendicular to the straight-line portion of
second rectification walls 23 is formed on a portion of first
plate member 15 corresponding to first curved portion 28.
Moreover, a curved face which is substantially perpendicular
to the straight-line portions of first rectification walls 22
and third rectification walls 24 is formed on a portion of
second plate member 16 corresponding to second curved portion
29. Although these curved faces are not shown in the drawings
to avoid complication, first plate member 15 itself
corresponding to first curved portion 28 and second plate
member 16 itself corresponding to second curved portion 29 are
curved into a gently protruding circular-arc shape, that is,
a so-called barrel shape.
According to the configuration described above, the air
heated by transceiver 5 in cabinet 4 is pulled into second blast
fan 13 from second intake port 9 of heat exchange device 6 in
the direction indicated by the arrow in Fig. 2. The heated
air is drawn into heat exchanger 14 from inlet port 18 shown
in Figs. 5A and 6. Then, the air passes between second plate
member 16 and third plate member 17, becoming cool air which
is supplied back to the inside of cabinet 4 from outlet port
19, whereby transceiver 5 is cooled down by the cool air.
On the other hand, as indicated by the broken-line arrow
in Fig. 2, the outside air is pulled into first blast fan 12
from first intake port 7 and drawn into heat exchanger 14 from
inlet port 20 shown in Figs. 5A and 6. Then, the air passes
between first plate member 15 and second plate member 16 and
is discharged to the outside of cabinet 4 from outlet port 21
via first discharge port 8.
The outside air passing between first plate member 15
and second plate member 16 and the air inside cabinet 4 passing
between second plate member 16 and third plate member 17 are
uniformly dispersed over approximately the entire surfaces of
plate members 15, 16, and 17 by first rectification walls 22
or second rectification walls 23 which are provided on first
plate member 15 or second plate member 16. With such a
configuration, heat exchange between the outside air and the
air inside cabinet 4 can be realized by the entire surface area
of plate members 15, 16, and 17.
However, during this heat exchange, if the outside air
temperature is extremely high, for example, the internal
temperature of cabinet 4 will rise too high, and as a
consequence, plate members 15, 16, and 17 will be thermally-
expanded. Thus, portions sandwiched between first
rectification walls 22 or portions sandwiched between second
rectification walls 23 may protrude into either one of plate
members 15, 16, and 17 adjacent thereto. Therefore, there is
a concern in that the air-flow path is narrowed or blocked.
Therefore, as described above, in Embodiment 1, as shown
in Fig. 7, first protrusions 26 are provided on parts of first
rectification walls 22 of first plate member 15 so as to
protrude into first recessed portions 25, which are formed on
the lower surface side of second plate member 16 close to first
plate member 15 when second rectification walls 23 are formed
in second plate member 16, and to make abutting contact with
the inner top surfaces of first recessed portions 25 close to
first plate member 15.
Moreover, second protrusions 27 are provided on parts
of second rectification walls 23 of second plate member 16 so
as to protrude into second recessed portions 25a, which are
formed on the lower surface side of third plate member 17 close
to second plate member 16 when third rectification walls 24
are formed in third plate member 17, and to make abutting
contact with the inner top surfaces of second recessed portions
25a close to second plate member 16.
For this reason, even when such a high temperature state
as described above occurs and thus at least any one of plate
members 15, 16, and 17 is thermally expanded, first protrusions
26 of first plate member 15 supports second plate member 16
disposed on an upper side thereof by making abutting contact
with first recessed portions 25 of second plate member 16 close
to first plate member 15. Moreover, second protrusions 27 of
second plate member 16 supports third plate member 17 disposed
on an upper side thereof by making abutting contact with second
recessed portions 25a of third plate member 17 close to second
plate member 16. In this way, the portions sandwiched between
first rectification walls 22 or the portions sandwiched between
second rectification walls 23 are prevented from protruding
into plate members 15, 16, and 17 adjacent thereto, thus
preventing the air-flow path from being narrowed or blocked.
Therefore, it is possible to realize a heat exchange device
capable of operating while maintaining high heat exchange
efficiency.
Fig. 8 is a top plan view of the heat exchanger of another
heat exchange device according to Embodiment 1 of the present
invention. Fig. 9 is an exploded perspective view of the heat
exchanger of another heat exchange device according to
Embodiment 1 of the present invention. Fig. 10 is a partial
enlarged perspective view of the heat exchanger of another heat
exchange device according to Embodiment 1 of the present
invention.
Differently from the heat exchanger described with
reference to Figs. 5 to 7, heat exchanger 14 shown in Fig. 8
prevents formation of a shortcut in the direction indicated
by the arrows in the curved portion of the rectification walls.
That is to say, in the first curved portion of first
rectification wall 22 of first plate member 15 shown in Fig.
10, second rectification wall 23 of second plate member 16 is
perpendicular to first rectification wall 22. In this case,
since first recessed portion 25 is formed on the side of first
plate member 15 when second rectification wall 23 is formed,
air passes through first recessed portion 25 close to first
plate member 15, whereby a shortcut is formed in the first
curved portion.
That is to say, a flow of air that takes a shortcut between
inlet port 18 of heat exchanger 14 shown in Fig. 6 and outlet
port 19 is formed, and a flow of air that takes a shortcut between
inlet port 20 and outlet port 21 is formed.
Therefore, in Embodiment 1 shown in Figs. 9 and 10, first
sealing protrusions 30 are provided in portions of first curved
portion 28 of first rectification walls 22 of first plate member
15 being perpendicular to the straight-line portion of second
rectification walls 23 of second plate member 16 adjacent to
first curved portion 28 so as to protrude into first recessed
portions 25 which are formed on second plate member 16 close
to first plate member 15 when second rectification walls 23
are formed on second plate member 16.
Moreover, second sealing protrusions 30a are provided
in portions of the straight-line portion of second
rectification walls 23 of second plate member 16 being
perpendicular to second curved portion 29 (not shown) of third
rectification walls 24 of third plate member 17 adjacent to
the straight-line portion so as to protrude into second
recessed portions 25a which are formed on third plate member
17 close to second plate member 16 when third rectification
walls 2 4 are formed on third plate member 17.
As shown in Fig. 10, first sealing protrusions 30 have
such a shape that the diameter thereof decreases as it extends
from first plate member 15 towards second plate member 16.
Similarly, second sealing protrusions 30a have such a shape
that the diameter thereof decreases as it extends from second
plate member 16 towards third plate member 17 . Moreover, first
recessed portions 25 which are formed on the side of first plate
member 15 when second rectification walls 23 are formed on
second plate member 16 have such a shape that the diameter on
the side of first plate member 15 is larger than that on the
side of second plate member 16. Similarly, second recessed
portions 25a which are formed on the side of second plate member
16 when third rectification walls 24 are formed on third plate
member 17 have such a shape that the diameter on the side of
second plate member 16 is larger than that on the side of third
plate member 17.
For this reason, as understood from Fig. 10, first
sealing protrusions 30 protruding into second recessed
portions 25a are formed in portions of the curved portion of
first rectification walls 22 of first plate member 15 being
perpendicular to the straight-line portion of second
rectification walls 23 of second plate member 16 adjacent
thereto, and which are formed on second plate member 16 close
to first plate member 15 when second rectification walls 23
are formed on second plate member 16, whereby a state where
so-called caps are formed is achieved.
Moreover, similarly, a state is achieved where third
recessed portions 25b which are formed in portions of the curved
portion of third rectification walls 24 of third plate member
17 close to second plate member 16 become caps at second sealing
protrusions 30a.
For this reason, it is possible to prevent formation of
a shortcut in the flow of air appearing in the direction
indicated by the arrows in Fig. 8 in the curved portions of
first rectification walls 22, second rectification walls 23,
and third rectification walls 24. As a result, it is possible
to prevent decrease in heat exchange efficiency of heat
exchanger 14.
Fig. 11 is a partial enlarged perspective view of the
heat exchanger of a still another heat exchange device
according to Embodiment 1 of the present invention.
The still another embodiment shown in Fig. 11 prevents
formation of a shortcut in the straight-line portion of first
rectification walls 22 of first plate member 15 and second
rectification walls 23 of second plate member 16, for example.
To achieve this, as shown in Fig. 11, both sides of second
rectification walls 23 of second plate member 16 coming in close
contact with first rectification walls 22 of first plate member
15 have such a shape that both the sides are depressed towards
first plate member 15. Similarly, both sides of third
rectification walls 24 of third plate member 17 coming in close
contact with second rectification walls 23 of second plate
member 16 have such a shape that both the sides are depressed
towards second plate member 16. With such a configuration,
it is possible to eliminate the gaps between first
rectification walls 22 and second plate member 16 and the gaps
between second rectification walls 23 and third plate member
17, thus preventing formation of a shortcut in the flow of air.
In Embodiment 1, in portions where the straight-line
portion of first rectification walls 22 of first plate member
15 overlaps vertically with first recessed portions 25 of
second plate member 16 close to the first plate member, gaps
are formed between first rectification walls 22 and first
recessed portions 25 on the side the first plate member, and
thus, a shortcut in the flow of air can occur easily. However,
by increasing the size of first protrusions 26 as much as
possible, it is possible to block the gaps between first
rectification walls 22 and first recessed portions 25 on the
side of the first plate member, thus preventing formation of
a shortcut in the flow of air and improving the heat exchange
efficiency of heat exchanger 14.
Moreover, although not shown in the drawings, in portions
where the straight-line portion of first rectification walls
22 overlaps vertically with the straight-line portion of second
rectification walls 23, first rectification walls 22 enter into
first recessed portions 25 on the side of first plate member
15, and second rectification walls 23 enter into second
recessed portions 25a on the side of second plate member 16.
In this way, it is possible to eliminate the gaps between first
rectification walls 22 and second plate member 16 and the gaps
between second rectification walls 23 and third plate member
17, thus preventing formation of a shortcut in the flow of air
and improving the heat exchange efficiency of heat exchanger
14.
That is to say, the heat exchange device of the present
invention includes a body case having a first intake port and
a first discharge port for a first environment and a second
intake port and a second discharge port for a second
environment; a first blast fan for the first environment and
a second blast fan for the second environment which are provided
in the body case; and a heat exchanger that performs heat
exchange between air of the first environment and air of the
second environment in the body case. The heat exchanger has
a structure in which a second synthetic resin-made plate member
is stacked on the surface of a first synthetic resin-made plate
member with a predetermined gap therebetween, and a third
synthetic resin-made plate member is stacked on the surface
of the second plate member with a predetermined gap
therebetween. A plurality of first rectification walls that
partitions the surface of the first plate member into a lane
shape is formed on the surface, confronting the second plate
member, of the first plate member, a plurality of second
rectification walls that partitions the surface of the second
plate member into a lane shape is formed on the surface,
confronting the second plate member, of the second plate member,
and a plurality of third rectification walls that partitions
the surface of the third plate member into a lane shape is formed
on the surface, opposite to the second plate member, of the
third plate member. First protrusions are provided on parts
of the first rectification walls of the first plate member so
as to protrude into first recessed portions which are formed
on the second rectification walls, confronting the first plate
member, of the second plate member, and second protrusions are
provided on parts of the second rectification walls of the
second plate member so as to protrude into second recessed
portions which are formed on the third rectification walls,
confronting the second plate member, of the third plate member.
With such a configuration, it is possible to decrease
air-flow resistance and to thus achieve smooth rectification
of the flow of air. Therefore, it is possible to realize a
heat exchange device capable of operating stably with high heat
exchange efficiency and high mass-productivity.
That is to say, in the heat exchange device of the present
invention, the plurality of first rectification walls
partitioning the surface of the first plate member into a lane
shape and the plurality of second rectification walls
partitioning the surface of the second plate member into a lane
shape are provided, respectively. In this way, it is possible
to form a uniform flow of air over approximately the entire
surface of the first plate member and the second plate member
by the first rectification walls and the second rectification
walls and to thus perform smooth rectification of the flow of
air.
Furthermore, in the portion where the uniform flow of
air is formed, the first protrusions are provided in parts of
the first rectification walls of the first plate member so as
to protrude into the first recessed portions on the first plate
member, and the second protrusions are provided in parts of
the second rectification walls of the second plate member so
as to protrude into the second recessed portions on the second
plate member. In this way, even when a temperature rise such
as increased air temperature occurs, the first plate member,
the second plate member, and the third plate member are
prevented from being greatly deformed in the direction towards
their adjacent plate member, whereby the air-flow path on the
surfaces of the plate members is prevented from being narrowed
or blocked. As a result, it is possible to achieve smooth
rectification of the flow of air, decrease the air-flow
resistance, and improve the heat exchange efficiency.
Therefore, it is possible to realize a heat exchange device
capable of operating stably with high heat exchange efficiency.
Even if the external state is changed and thus a situation
such as increased air temperature occurs, according to the heat
exchange device of the present invention, the first plate
member, the second plate member, and the third plate member
are prevented from being greatly deformed in the direction
towards their adjacent plate member, whereby the air-flow path
on the surfaces of the plate members is prevented from being
narrowed or blocked. As a result, it is possible to improve
the heat exchange efficiency.
Moreover, in the protrusions provided in parts of the
rectification walls, the first protrusions protrude into the
first recessed portions on the second plate member, and the
second protrusions protrude into the second recessed portions
on the side of the third plate member, whereby the stacking
position of the first plate member relative to the second plate
member and the stacking position of the second plate member
relative to the third plate member are determined. In addition,
since the protrusions secure the gap between the respective
plate members, it is possible to obtain an advantage that the
air-flow path in the heat exchanger is prevented from being
narrowed or blocked.
Moreover, by using the heat exchange device described
in Embodiment 1, it is possible to form a device for
accommodating a heat generation body which includes the heat
exchange device and a cabinet for accommodating the heat
generation body as shown in Fig. 1, and in which the heat
exchange device is mounted on an opening of the cabinet.
With such a configuration, it is possible to realize a
device for accommodating a heat generation body, accommodating
a heat exchange device which is capable of operating stably
with high heat exchange efficiency. Since the heat exchange
efficiency is high, it is possible to achieve further
miniaturization than that of the conventional one. Thus, it
is possible to obtain an advantage that the selection range
of places where it is to be installed in a building or the like
can be broadened.
Embodiment 2
Similar to Embodiment 1, Figs. 1 to 3 show a heat exchange
device according to Embodiment 2 of the present invention.
That is, Fig. 1 is a perspective view showing an installation
example of the heat exchange device, Fig. 2 is a cross-sectional
view of the heat exchange device, and Fig. 3 is an exploded
perspective view of the heat exchange device.
Description of Figs. 1 to 3 is the same as that described
in Embodiment 1 and will be omitted herein.
Fig. 12 is an exploded perspective view of the heat
exchanger of a heat exchange device according to Embodiment
2 of the present invention. Fig. 13 is a perspective view of
the heat exchanger of the heat exchange device according to
Embodiment 2 of the present invention.
As shown in Figs. 12 and 13, heat exchanger 114 has a
structure, for example, in which second synthetic resin-made
plate member 116 is stacked on the surface of first synthetic
resin-made plate member 115 with a predetermined gap
therebetween, and third synthetic resin-made plate member 117
is stacked on the surface of second plate member 116 with a
predetermined gap therebetween, as shown in Fig. 13. Here,
plate members 115, 116, and 117 are made from synthetic resin
due to its good moldability and high mass-productivity, and
other similar materials having the same properties may be used.
Moreover, plate members 115, 116, and 117 have a rectangular
shape. In Fig. 12, although three plate members 115, 116, and
117 are stacked, a plurality of plate members may be stacked,
for example, by stacking additional fourth plate member 117a
and the like above third plate member 117.
The top surface (in Fig. 13) of heat exchanger 114 thus
stacked serves as inlet 118 in which the air inside cabinet
4 shown in Figs. 1 and 13 is drawn via second intake port 9.
The air drawn from inlet port 118 into heat exchanger 114 is
subsequently discharged into cabinet 4 via outlet port 119
which is provided on the right side of the lower part in Fig.
13.
The outside air from the outside of cabinet 4 is drawn
from inlet port 120, which is provided on the lower surface
in Fig. 13, and is discharged to the outside of cabinet 4 via
outlet port 121 which is provided on the left side of the upper
part.
Although such a ventilation of the outside air will be
described in further detail later, heat exchanger 114 performs
cooling of transceiver 5 shown in Fig. 1. That is to say, since
electric current of several tens of amperes or more flows
through transceiver 5, there is a case where transceiver
5itself generates heat and the temperature thereof rises.
When such a temperature rise in transceiver 5 is left as it
is, the characteristics thereof may become unstable.
Therefore, as described above, similar to Embodiment 1,
Embodiment 2 has a structure in which heat exchanger 114
performs heat exchange between the outside air and the air
flowing inside cabinet 4 to cool down the inside air, thus
cooling down and suppressing heat generation of transceiver
5, and preventing the operation of transceiver 5 from becoming
unstable.
Heat exchanger 114 described above is obtained by
stacking second rectangular synthetic resin-made plate member
116 on the surface of first rectangular synthetic resin-made
plate member 115 and third synthetic resin-made plate member
117 on the surface of second plate member 116 as shown in Fig.
12.
More specifically, a plurality of first rectification
walls 122 that partitions the surface of first plate member
115 into a lane shape is provided on the surface of first plate
member 115 close to second plate member 116. Moreover, a
plurality of second rectification walls 123 that partitions
the surface of second plate member 116 into a lane shape is
provided on the surface of second plate member 116 close to
third plate member 117. Furthermore, third plate member 117
is provided with rectification walls for a plate member on the
right side in Fig. 12.
Fig. 14A is a perspective view of a main part of the heat
exchanger of the heat exchange device according to Embodiment
2 of the present invention. Fig. 14B is an enlarged perspective
view of the part surrounded by the broken line in Fig. 14A.
Fig. 15A is a perspective view of a main part of the heat
exchanger of the heat exchange device according to Embodiment
2 of the present invention. Fig. 15B is an enlarged perspective
view of the part surrounded by the broken line in Fig. 15A.
As shown in Figs. 12, 14A, and 14B, first protrusions
124 are provided between first plural rectification walls 122
on the surface of first plate member 115 close to second plate
member 116 so as to protrude towards second plate member 116.
Moreover, second protrusions 125 are provided between second
plural rectification walls 123 on the surface of second plate
member 116 close to third plate member 117 so as to protrude
towards third plate member 117.
Plate members 115, 116, and 117 have a vertically
rectangular shape, and first plate member 115 has first
rectification walls 122 which extend from a first end thereof
115a (the lower end) towards a second end 115b (the upper end) .
Moreover, first rectification walls 122 have a curved shape
that is curved in front of the upper end towards first long
side 115c which is on the left side in Fig. 12, whereby portions
of first rectification walls 122 corresponding to first long
side 115c serve as outlet port 121.
Moreover, second plate member 116 has second
rectification walls 123 which extend from a second end 116b
(the upper end) towards a first end thereof 116a (the lower
end) . Second rectification walls 123 have a curved shape that
is curved in front of the lower end towards second long side
116c which is on the right side in Fig. 12, whereby portions
of second rectification walls 123 corresponding to second long
side 116c serve as outlet port 119.
Furthermore, subsequently, although third plate member
117 and fourth plate member 117a are similarly stacked
alternately, description thereof will be provided briefly in
order to avoid redundant description. It should be noted that
third plate member 117 may be the same as that used as first
plate member 115, and fourth plate member 117a stacked
subsequently on third plate member 117 may be the same as that
used as second plate member 116.
In addition, as shown in Figs. 15A and 15B, first curved
portion 126, which is provided to first plate member 115 so
as to be curved towards first long side 115c, and second curved
portion 127, which is provided to second plate member 116 so
as to be curved towards the second long side, are configured
as portions where first protrusions 124 or second protrusions
125 are not formed. Moreover, as shown in Fig. 15, curved
surface 128 which is substantially perpendicular to first
rectification walls 122 or second rectification walls 123 is
formed on the portions where first protrusions 124 or second
protrusions 125 are not formed.
According to the configuration described above, the air
heated by transceiver 5 in cabinet 4 (Fig. 1) is pulled into
second blast fan 13 from second intake port 9 of heat exchange
device 6 in the direction indicated by the arrow in Fig. 2.
The heated air is drawn into heat exchanger 114 from inlet port
118 shown in Figs . 13 to 15. Then, the air passes between second
plate member 116 and third plate member 117, becoming cool air
which is supplied back to the inside of cabinet 4 (Fig. 1) via
outlet port 119 and second discharge port 10 (Fig. 2) , whereby
transceiver 5 is cooled down.
On the other hand, as shown in Fig. 2, the outside air
is pulled into first blast fan 12 from first intake port 7.
Then, the air is drawn into heat exchanger 114 from inlet port
120 as shown in Figs. 13 to 15, passes between first plate member
115 and second plate member 116, and is discharged to the
outside of cabinet 4 (Fig. 1) via outlet port 121 and first
discharge port 8 (Fig. 2).
The outside air passing between first plate member 115
and second plate member 116 and the air inside cabinet 4 passing
between second plate member 116 and third plate member 117 are
uniformly dispersed over approximately the entire surfaces of
plate members 115, 116, and 117 by first rectification walls
122 and second rectification walls 123, respectively, which
are provided on first plate member 115 and second plate member
116. Therefore, the heat exchange device of Embodiment 2 is
able to perform heat exchange between the outside air and the
air inside the cabinet by using a large area and to thus operate
stably with high heat exchange efficiency.
However, during this heat exchange, if the outside air
temperature is extremely high, for example, there is a case
where the internal temperature of cabinet 4 may rise too high.
In such a case, plate members 115, 116, and 117 may be thermally
expanded as a result of the temperature rise, and portions
sandwiched between first rectification walls 122 or portions
sandwiched between second rectification walls 123 may protrude
into plate members 115, 116, and 117 adjacent thereto.
Therefore, there is a concern in that the air-flow path is
narrowed or blocked.
However, as described above, in Embodiment 2, first
protrusions 124 or second protrusions 125 are provided on the
portions sandwiched between first rectification walls 122 or
portions sandwiched between second rectification walls 123.
Therefore, even when such a high temperature state as described
above occurs, the portions sandwiched between first
rectification walls 122 or the portions sandwiched between
second rectification walls 123 protrude into plate members 115,
116, and 117 adjacent thereto. In this way, it is possible
to prevent the air-flow path from being narrowed or blocked
and to maintain high heat exchange efficiency.
As described above, as shown in Figs. 15A and 15B, curved
face 128 which is substantially perpendicular to first
rectification walls 122 or second rectification walls 123 is
provided on the non-formation portion of first plate member
115 or second plate member 116 where first protrusions 124 or
second protrusions 125 are not formed. Curved face 128 is
provided so as to prevent any possible increase in air-flow
resistance when air passes therethrough. That is to say, if
protrusions 124 and 125 are provided on the non-formation
portion where first protrusions 124 or second protrusions 125
are not formed, there will be a considerable increase in the
air-flow resistance.
As understood when observing the non-formation portion
of second plate member 116, first protrusions 124 are formed
on portions of first plate member 115 disposed adjacent to this
non-formation portion and portions of third plate member 117
opposing this non-formation portion. Therefore, even if
second protrusions 125 are not provided on the non-formation
portion of second plate member 116, the adjacent wall surfaces
will not protrude due to thermal expansion. However, in order
to prevent or alleviate the protruding of the wall surfaces
further, it may be preferable to provide curved surface 128
on this non-formation portion as described above.
That is to say, the heat exchange device of the present
invention includes a body case having a first intake port and
a first discharge port for a first environment, and a second
intake port and a second discharge port for a second
environment; a first blast fan for the first environment and
a second blast fan for the second environment which are provided
in the body case; and a heat exchanger that performs heat
exchange between air of the first environment and air of the
second environment in the body case. The heat exchanger has
a structure in which a second synthetic resin-made plate member
is stacked on the surface of a first synthetic resin-made plate
member with a predetermined gap therebetween, and a third
synthetic resin-made plate member is stacked on the surface
of the second plate member with a predetermined gap
therebetween. A plurality of first rectification walls that
partitions the surface of the first plate member into a lane
shape is formed on the surface, confronting the second plate
member, of the first plate member, and a plurality of second
rectification walls that partitions the surface of the second
plate member into a lane shape is formed on the surface,
confronting the second plate member, of the second plate member
First protrusions are provided between the first plurality of
rectification walls on the surface, confronting the second
plate member, of the first plate member so as to protrude
towards the second plate member, and second protrusions are
provided between the second plurality of rectification walls
on the surface, confronting the second plate member, of the
second plate member so as to protrude towards the third plate
member.
With such a configuration, it is possible to decrease
air-flow resistance and to thus achieve smooth rectification
of the flow of air. Therefore, it is possible to realize a
heat exchange device capable of operating stably with high heat
exchange efficiency and high mass-productivity.
That is to say, in the heat exchange device of the present
invention, the plurality of first rectification walls that
partitions the surface of the first plate member into a lane
shape and the plurality of second rectification walls that
partitions the surface of the second plate member into a lane
shape are provided. Moreover, the first protrusions are
provided between the first plural rectification walls so as
to protrude towards the second plate member, and the second
protrusions are provided between the second plural
rectification walls so as to protrude towards the third plate
member.
In this way, it is possible to form a uniform flow of
air over approximately the entire surface of the first plate
member and the second plate member by the first rectification
walls and the second rectification walls . Moreover, since the
first protrusions and the second protrusions are provided in
the portion where the uniform flow of air is formed, even when
a situation such as increased air temperature occurs, the
air-flow path is prevented from being narrowed or blocked. As
a result, it is possible to achieve smooth rectification of
the flow of air, decrease the air-flow resistance, and improve
the heat exchange efficiency. Therefore, it is possible to
realize a heat exchange device capable of operating stably with
high heat exchange efficiency.
Moreover, by using the heat exchange device described
in Embodiment 2, it is possible to form a device for
accommodating a heat generation body which includes the heat
exchange device and a cabinet for accommodating the heat
generation body as shown in Fig. 1, and in which the heat
exchange device is mounted on an opening of the cabinet.
With such a configuration, it is possible to realize a
device for accommodating a heat generation body, accommodating
a heat exchange device which is capable of operating stably
with high heat exchange efficiency. Since the heat exchange
efficiency is high, it is possible to achieve further
miniaturization than in a conventional heat exchange device.
Thus, it is possible to obtain an advantage that the selection
range of places where it may be installed in a building or the
like can be broadened.
INDUSTRIAL APPLICABILITY
The heat exchange device of the present invention can
operate stably with high heat exchange efficiency and high
mass-productivity. Therefore, the heat exchange device can
be extremely useful as a cooling device used in facilities of
a base station of communication devices including cellular
phones and other outdoor facilities.
We claim :
1. A heat exchange device comprising :
a body case having a first intake port and a first discharge port for a first environment,
and a second intake port and a second discharge port for a second environment;
a first blast fan for the first environment and a second blast fan for the second
environment which are provided in the body case; and
a heat exchanger that performs heat exchange between air of the first environment and
air of the second environment in the body case,
wherein the heat exchanger has a structure in which a second synthetic resin-made plate
member is stacked on the surface of a first synthetic resin-made plate member with a
predetermined gap therebetween, and a third synthetic resin-made plate member is stacked on the
surface of the second plate member with a predetermined gap therebetween,
wherein a plurality of first rectification walls that partitions the surface of the first plate
member into a lane shape is formed on the surface, confronting the second plate member of the
first plate member, a plurality of second rectification walls that partitions the surface of the
second plate member into a lane shape is formed on the surface, confronting the third plate
member of the second plate member, and a plurality of third rectification walls that partitions the
surface of the third plate member into a lane shape is formed on the surface, opposite to the
second plate member, of the third plate member, and
wherein first protrusions are provided on parts of the first rectification walls of the first
plate member so as to protrude into first recessed portions which are formed on the second
rectification walls, confronting the first plate member, of the second plate member, and second
protrusions are provided on parts of the second rectification walls of the second plate member so
as to protrude into second recessed portions which are formed on the third rectification walls,
confronting the second plate member, of the third plate member.
2. The head exchange device of claim 1,
wherein the first rectification walls of the first plate member include straight-line portions
which extend in a straight line from a first end thereof towards a second end and first curved
portions so that the first rectification walls have a curved shape that is curved in front of the
second end towards a first long side of the first plate member, and
wherein second rectification walls of the second plate member include straight-line
portions which extend in a straight line from a second end towards a first end thereof and second
curved portions so that the second rectification walls have a curved shape that is curved in front
of the first end towards a second long side of the second plate member.
3.The head exchange device of claim 2,
wherein in the first curved portions of the first rectification walls of the first plate
member, a distance between adjacent curved portions of the first rectification walls is larger than
that between the straight-line portions of the first rectification walls, and
wherein in the second curved portions of the second rectification walls of the second
plate member, a distance between adjacent curved portions of the second rectification walls is
larger than that between the straight-line portions of the second rectification walls.
4. The heat exchange device of claim 3.
wherein a first curved face which is perpendicular to the straight-line portion of the
second rectification walls of the second plate member is provided on the first curved portions of
the first plate member being curved towards the first long side, and
wherein a second curved face which is perpendicular to the straight-line portion of the
first rectification walls is provided on the second curved portions of the second plate member
being curved towards and second long side.
5. The heat exchange device of claim 4,
wherein the first curved face, which is perpendicular to the straight-line portions of the
second rectification walls of the second plate member and which is provided on the first curved
portions of the first plate member being curved towards the first long side, is formed by
processing the first plate member itself;
wherein the second curved face which is perpendicular to the straight-line portions of the
first rectification walls and which is provided on the second curved portions of the second plate
member being curved towards the second long side, is formed by processing the second plate
member itself.
6. The heat exchange device of claim 5,
wherein the first curved face is formed by processing the first plate member itself into a
protruding circular-arc shape, and
where the second curved face is formed by processing the second plate member itself into
a gently protruding circular-arc shape.

7. The heat exchange device of claim 1,
wherein the first protrusions protrude into the first recessed portions on the first plate
member so as to make contact with inner top faces thereof, and
wherein the second protrusions protrude into the second recessed portions on the second
plate member so as to make contact with the inner top faces thereof.
8. The heat exchange device of claim 1.
wherein first sealing protrusions are provided in sections of first curved portions of the
first rectification walls of the first plate member, which sections are perpendicular to straight-line
portions of the second rectification walls of the second plate member, which straight-line
portions is adjacent to the first curved portions, so as to protrude into the first recessed portions
on the first plate member, and
wherein second sealing protrusions are provided in sections of the straight-line portions
of the second rectification walls of the second plate member, which sections are perpendicular to
a third curved portions of the third rectification wall of the third plate member adjacent to the
straight-line portions, so as to protrude into the second recessed portions on the second plate
member.
9. The heat exchange device of claim 8,
wherein the first sealing protrusions have such a shape that a diameter thereof decreases
as each one of the protrusions extends from the first plate member towards the second plate
member,
wherein the second sealing protrusions have such a shape that a diameter thereof
decreases as each one of the protrusions extends from the second plate member towards the third
plate member,
wherein the first recessed portions on the first plate member have such a shape that a
diameter on the side of the first plate member is larger than that on the side of the second plate
member, and
wherein the second recessed portions on the side of the second plate member have such a
shape that a diameter on the side of the second plate member is larger than that on the side of the
third plate member.
10. The heat exchange device of claim 1,
wherein both sides of the second rectification walls of the second plate member coming
in close contact with the first rectification walls of the first plate member have such a shape that
both the sides are depressed towards the first plate member, and
wherein both sides of the third rectification walls of the third plate member coming in
close contact with the second rectification walls of the second plate member have such a shape
that both the sides are depressed towards the second plate member.
11. A heat exchange device comprising :
a body case having a first intake port and a first discharge port for a first environment,
and a second intake port and a second discharge port for a second environment;
a first blast fan for the first environment and a second blast fan for the second
environment which are provided in the body case; and
a heat exchanger that performs heat exchange between air of the first environment and air
of the second environment in the body case,
wherein the heat exchanger has a structure in which a second synthetic resin-made plate
member is stacked on the surface of a first synthetic resin-made plate member with a
predetermined gap therebetween, and a third synthetic resin-made plate member is stacked on the
surface of the second plate member with a predetermined gap therebetween,
wherein a plurality of first rectification walls that partitions the surface of the first plate
member into a lane shape is formed on the surface, confronting the second plate member, of the
first plate member, and a plurality of second rectification walls that partitions the surface of the
second plate member into a lane shape is formed on the surface, confronting the second plate
member, and
wherein first protrusions are provided between the first plurality of rectification walls on
the surface, confronting the second plate member, of the first plate member so as to protrude
towards the second plate member, and second protrusions are provided between the second
plurality of rectification walls on the surface, confronting the third plate member, of the second
plate member so as to protrude towards the third plate member.
12. The heat exchange device of claim 11,
wherein the first plate member has the first rectification walls which extend from a first
end thereof towards a second end so that the first rectification walls have a curved shape that is
curved in front of the second end towards a first long side of the first plate member, and
wherein the second plate member has the second rectification walls which extend from a
second end towards a first end thereof so that the second rectification walls have a curved shape
that is curved in front of the first end towards a second long side of the second plate member.
13. The heat exchange device of claim 12,
wherein at lease one of the first curved portion of the first plate member being curved
towards the first long side and a second curved portion of the second plate member being curved
towards the second long side has a non-formation portion of the first protrusions or a non-
formation portion of the second protrusions.
14. The heat exchange device of claim 13,
wherein a curved face is provided to one of the first plate member at the non-formation
portion of the first protrusions and the second plate member at the non-formation portion of the
second protrusions such that the curved face is perpendicular to one of the first rectification walls
at the non-formation portion of the first protrusions and the second rectification walls at the non-
formation portion of the second protrusions.
15. A device for accommodating a heat generation body, comprising :
a cabinet for accommodating a heat generation body; and
the heat exchange device of claim 1 mounted to an opening of the cabinet.

In the heat exchanger of a heat exchange device of the
present invention, first protrusions (26) are provided on a
part of first rectification walls (22) of first plate member
(15) so as to protrude into first recessed portions (25) which
are formed on second plate member (16) close to first plate
member (15) when second rectification walls are formed on
second plate member (16). Second protrusions (27) are
provided on a part of second rectification walls (23) of second
plate member (16) so as to protrude into second recessed
portions (25a) which are formed on third plate member (17) close
to second plate member (16) when third rectification walls (24)
are formed on third plate member (17).