DESCRIPTION
HEAT EXCHANGER DEVICE AND HEATING ELEMENT HOLDER
USING SAME
TECHNICAL FIELD
The present invention relates to a heat exchanger device and a
heating element holder using the same.
BACKGROUND ART
A cellular phone base station, for example, is sometimes expressed as
a heating element because it has a large current flow of several tens of
amperes. It is also considered a heating element having high electric power
consumption in light of its electric power consumption. Accordingly, cooling
the generated heat is extremely important in order to stabilize the
performance of the base station of the cellular phone . The cellular phone
base station as mentioned above is provided with the following configuration
for carrying out its cooling.
FIG. 22 is a cross sectional view schematically showing a
configuration of a conventional heat exchanger device.
The cellular phone base station is configured to include an electronic
circuit and the like, and is generally arranged in a casing such as a cabinet
protecting them from an external natural environment. The cabinet houses
a transmitting and receiving portion serving as a protection heating element
in its inner portion, for example, and is configured such that heat exchanger
device 301 as shown in FIG. 22 is provided in an opening portion of the
cabinet. Further, as shown in FIG. 22, heat exchanger device 301 is
structured to be provided with body case 311, first air blower 312 and

second air blower 313 provided in body case 311, and heat exchanger 314
carrying out heat exchange between outdoor air and air in the cabinet (not
shown) in body case 311 (refer to Patent Document 1 which shows similar
technology). In this case, body case 311 has first suction port 307 sucking
the outdoor air and first discharge port 308 discharging the outdoor air, and
second suction port 309 sucking the air in the cabinet and second discharge
port 310 discharging the air into the cabinet. First air blower 312 blows the
ambient air to heat exchanger device 301, and second air blower 313 blows
the air inside the cabinet to heat exchanger device 301.
Conventional heat exchanger device 301 mentioned above has a
configuration in which two air blowers, that is, first air blower 312 blowing
the ambient air and second air blower 313 blowing the air inside the
cabinet, and heat exchanger 314 are housed in one body case 311, and hence
body case 311 itself becomes large. On the other hand, the base station of
the cellular phone is advanced in its downsizing, and it is strongly required
to reduce the size of the heat exchanger device main body.
PRIOR ART DOCUMENT
PATENT DOCUMENT
Patent Document V Unexamined Japanese Patent Publication No.
2000-161875
DISCLOSURE OF THE INVENTION
Accordingly, an object of the present invention is to downsize a heat
exchanger device.
The heat exchanger device according to the present invention
includes: a body case provided with a first air intake port and a first

discharge port for a first environment in a front surface thereof, and a
second air intake port and a second discharge port for a second environment
in a back surface thereof; an air-blow fan for the first environment provided
in the body case; and a heat exchanger inside the body case for exchanging
heat between the air in the first environment and the air in the second
environment, wherein the heat exchanger includes a multilayered body
having a plurality of parallelogram plate bodies multilayered with
predetermined distances, the multilayered body having the multilayered
parallelogram plate bodies is provided with an air suction port for the first
environment and an air suction port for the second environment in two
opposed surfaces thereof, the multilayered body having the multilayered
parallelogram plate bodies is further provided with an air blow-off port for
the first environment in one of the other surfaces formed thereon, and an air
blow-off port for the second environment in another surface opposed to the
surface having the air blow-off port for the first environment, the surface
provided with the air suction port for the first environment is directed to the
air-blow fan, the air blow-off port for the first environment is placed in
contact with the first discharge port formed in the body case and the air
blow-off port for the second environment is placed in contact with the second
discharge port formed in the body case, and the heat exchanger has a
chamber formed between the second air intake port and the air suction port
for the second environment.
With this configuration, since it has the chamber which is formed
between the second air intake port and the air suction port for the second
environment, and can change a direction of the air blower by the chamber, it
is possible to arrange the air-blow fan for the second environment in an
outer portion of the heat exchanger device. Therefore, it is possible to

downsize the heat exchanger device.
Further, a heating element holder according to the present invention
comprises using the heat exchanger device described above.
With this configuration, by using the downsized heat exchanger
device, a downsized heating element holder can be realized. Further, by
using the heat exchanger device having the chamber, it becomes possible to
select a place where the air-blow fan for the second environment is installed,
enlarge a design freedom of a parts layout, and further downsize the heating
element holder.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view showing an installation example of a
heating element holder using a heat exchanger device according to
Embodiment 1 of the present invention.
FIG. 2 is a configuration view of the heat exchanger device according
to Embodiment 1 of the present invention as seen from a cross section.
FIG. 3 is a configuration view of the heat exchanger device and the
heating element holder according to Embodiment 1 of the present invention
as seen from a cross section.
FIG. 4 is a back elevational view of the heat exchanger device
according to Embodiment 1 of the present invention.
FIG. 5 is an exploded view of a heat exchanger which is used in the
heat exchanger device according to Embodiment 1 of the present invention.
FIG. 6 is a perspective view showing the heat exchanger which is
used in the heat exchanger device according to Embodiment 1 of the present
invention.
FIG. 7 is a configuration view of the heat exchanger device according

to Embodiment 1 of the present invention as seen from an exploded cross
section.
FIG. 8 is a perspective view relating to a cover assembly of the heat
exchanger device according to Embodiment 1 of the present invention.
FIG. 9 is a perspective view of a heat exchanger device according to
Embodiment 2 of the present invention.
FIG. 10 is a configuration view of an exploded cross section of the
heat exchanger device according to Embodiment 2 of the present invention.
FIG. 11 is a configuration view of an enlarged cross section of a heat
exchanger portion of the heat exchanger device according to Embodiment 2
of the present invention.
FIG. 12 is a perspective view of a circulation fan portion of a heat
exchanger device according to Embodiment 3 of the present invention.
FIG. 13 is a perspective view obtained by cutting a part of the
circulation fan portion of the heat exchanger device according to
Embodiment 3 of the present invention.
FIG. 14 is a configuration view of an exploded cross section of the
circulation fan portion of the heat exchanger device according to
Embodiment 3 of the present invention.
FIG. 15 is an exploded perspective view of the circulation fan portion
of the heat exchanger device according to Embodiment 3 of the present
invention.
FIG. 16 is a perspective view of a heat exchanger device according to
Embodiment 4 of the present invention.
FIG. 17 is a perspective view of a scroll casing of the heat exchanger
device according to Embodiment 4 of the present invention:
FIG. 18 is a perspective view of a motor fixing plate of the heat

exchanger device according to Embodiment 4 of the present invention.
FIG. 19 is a perspective view showing an air-blow fan mounting
configuration of the heat exchanger device according to Embodiment 4 of the
present invention.
FIG. 20 is a plan view obtained by enlarging a main part of an
installation of the air-blow fan of the heat exchanger device according to
Embodiment 4 of the present invention.
FIG. 21 is a cross sectional view showing a configuration of the heat
exchanger device according to Embodiment 4 of the present invention to
which a motor is attached.
FIG. 22 is a cross sectional view schematically showing a
configuration of a conventional heat exchanger device.
PREFERRED EMBODIMENTS FOR CARRYING OUT OF THE
INVENTION
A description will be given below of an embodiment according to the
present invention with reference to the accompanying drawings. In the
following drawings, since like components are denoted by like reference
marks, and the description thereof may sometimes be omitted.
(Embodiment l)
FIG. 1 is a perspective view showing an installation example of a
heating element holder using a heat exchanger device according to
Embodiment 1 of the present invention.
As shown in FIG. 1, a cellular phone base station 3 is provided on
rooftop 2 of building 1 housing offices and the like. Base station 3 includes,
for example, box-like cabinet 4, transmitting and receiving portion 5
provided in the cabinet 4, and a heat exchanger device 6 provided in the

front opening portion of cabinet 4. In this case, heat exchanger device 6 is
installed in the back surface of door 22, and can move together with door 22
so as to freely open and close.
FIG. 2 is a configuration view of the heat exchanger device according
to Embodiment 1 of the present invention as seen from a cross section, and
FIG. 3 is a configuration view of the heat exchanger device and the heating
element holder according to Embodiment 1 of the present invention as seen
from a cross section. Further, FIG. 4 is a back elevational view of the heat
exchanger device according to Embodiment 1 of the present invention. FIG.
5 is an exploded view of a heat exchanger which is used in the heat
exchanger device according to Embodiment 1 of the present invention, and
FIG. 6 is a perspective view showing the heat exchanger which is used in
the heat exchanger device according to Embodiment 1 of the present
invention.
As shown in FIGS. 2 to 4, heat exchanger device 6 according to
Embodiment 1 is provided with body case 11, air-blow fan 12 for a first
environment, and heat exchanger 14. In this case, body case 11 is provided
with first air intake port 7 and first discharge port 8 for a first environment
which suck or discharge outside air, in a front surface 11a thereof, and
second air intake port 9 and second discharge port 10 for a second
environment which suck or discharge air in cabinet 4, in a back surface 1 lb
thereof. Blower fan 12 for the first environment is provided in body case 11.
Heat exchanger 14 carries out a heat exchange between the air for the first
environment and the air for the second environment, in body case 11.
Heat exchanger 14 includes, as shown in FIG. 5, parallelogram
columnar shaped multilayered body 14c having a plurality of parallelogram
plate bodies 14d multilayered with predetermined distances In heat

exchanger 14, air suction port 14a for the first environment and air suction
port 14b for the second environment are provided in two opposed surfaces
formed on the multilayered body 14c. Air blow-off port 14e for the first
environment is provided in one of the other faces which are formed in
multilayered body 14c by laminating parallelogram plate bodies 14d, and air
blow-off port 14f for the second environment is provided in a surface opposed
to the surface having air blow-off port 14e for the first environment. In this
case, the perspective view in FIG. 6 shows a configuration in which
parallelogram plate bodies 14d in FIG. 5 are formed as multilayered body
14c.
Further, the surface provided with air suction port 14a for the first
environment is directed to air-blow fan 12, air blow-off port 14e for the first
environment is placed in contact with first discharge port 8 in body case 11
and air blow-off port 14f for the second environment is placed in contact
with second discharge port 10 in body case 11. Further, heat exchanger
device 6 has chamber 16 formed between second air intake port 9 and air
suction port 14b for the second environment.
With this configuration, the heat exchanger device 6 has the chamber
16 which is formed between second air intake port 9 and air suction port 14b
for the second environment, and can change a direction of the air blower by
chamber 16. Accordingly, it is possible to arrange circulation fan 17 serving
as an air-blow fan for the second environment in an outer portion of heat
exchanger device 6, as mentioned below. Therefore, it is possible to
downsize heat exchanger device 6.
Multilayered body 14c of heat exchanger 14 is formed by superposing
a plurality of parallelogram plate bodies 14d made of a synthetic resin with
predetermined distances. Further, the surface provided with air suction

port 14a for the first environment is adjacent to the surface provided with
air blow-off port 14e for the first environment at first obtuse angle 91, and
the surface provided with air suction port 14b for the second environment is
adjacent to the surface provided with the air blow-off port 14f for the second
environment at second obtuse angle 02.
The surfaces of parallelogram plate bodies 14d forming multilayered
body 14c are provided with a plurality of rectification walls 14g which divide
the surfaces into a lane shape, as shown in FIGS. 2 and 5. Parallelogram
plate body 14d is formed into a parallelogram shape which is longer in a
vertical direction, and rectification wall 14g is extended from one end of
parallelogram plate body 14d serving as an inflow port toward the other end
side. Rectification walll4g is formed into such a shape that is curved to one
long side of the parallelogram short of the other end side, and is connected
to an outflow port. A plurality of approximately L-shaped air blower lanes
are formed on parallelogram plate bodies 14d by the plate-shaped
rectification walls 14g as mentioned above.
According to heat exchanger 14 having such a configuration, with
regard to the air for the second environment, the short air blower lane is
provided close to cabinet 4, and the long air blower lane is provided close to
the external portion. On the other hand, with regard to the air for the first
environment, the long air blower lane is provided close to cabinet 4, and the
short air blower lane is provided close to the external portion.
Heat exchanger 14 as mentioned above is configured such that a
bottom surface is formed as an air inflow port close to the external portion,
that is, air suction port 14a for the first environment, and each of air
outflow ports close to the external portion is connected to first discharge
port 8. Further, in heat exchanger 14, a top plate is formed as an inflow

port close to inside air, that is, air suction port 14b for the second
environment, and each of air outflow ports close to cabinet 4 is connected to
second discharge port 10.
Further, air-blow fan 12 for the external air is provided at such a
position as to feed in the air toward air suction port 14a for the first
environment. In the inflow port of the air inside cabinet 4, that is, air
suction port 14b for the second environment, air suction port 14b for the
second environment serves as an inclined plane by itself, and chamber 16 is
formed between it and the suction port of the air in cabinet 4, that is, second
air intake port 9. The air sucked from the inner side of cabinet 4 changes its
flow direction by passing through chamber 16, and is sucked into suction
port 14b for the second environment.
Further, as shown in FIG. 4, a back surface of heat exchanger device
6 is covered by body case 11, and is configured such that second air intake
port 9, heat exchanger 14, second discharge port 10, and air-blow fan 12 are
arranged from an upper portion.
Next, a description will be given of an operation and a function of
heat exchanger device 6. The air raised to high temperature due to heat
generated from the transmitting and receiving portion 5 in cabinet 4 is fed
into chamber 16 from second air intake port 9 of heat exchanger device 6 by
circulation fan 17 provided in cabinet 4. In this case, an upper portion and a
surrounding area of heat exchanger device 6 are covered by cover 21.
On the other hand, the cold external air is sucked from first air intake
port 7 by an operation of air-blow fan 12, and is fed to air suction port 14a
for the first environment of heat exchanger 14. In heat exchanger 14, a heat
exchange is carried out between the cold external air and the air in high
temperature cabinet 4. As a result, the cooled air in the cabinet is blown out

of second discharge port 10 into cabinet 4, and the external air is discharged
to the external portion again from first discharge port 8.
With such a configuration, the air blown from circulation fan 17 in
cabinet 4 passes through chamber 16 and flows into air suction port 14b for
the second environment of heat exchanger 14 directed to second air intake
port 9 side, by using heat exchanger 14 in which its cross section is formed
into the parallelogram shape. Accordingly, the air which is heated in
cabinet 4 efficiently flows into heat exchanger 14.
Further, since heat exchanger 14 uses the plate body in which the
cross sectional shape is the parallelogram shape, a bending angle is smaller
in the air blower lane in the inner portion, and a pressure loss can be held
down. Further, since the air blowing of the air in cabinet 4 is carried out by
using circulation fan 17 provided in cabinet 4, it is possible to hold down a
size of body case 11.
Next, a description will be given of an installation of heat exchanger
14 in body case 11. FIG. 7 is a configuration view of the heat exchanger
device according to Embodiment 1 of the present invention as seen from an
exploded cross section, and FIG. 8 is a perspective view relating to a cover
assembly of the heat exchanger device according to Embodiment 1 of the
present invention.
As shown in FIGS. 7 and 8, body case 11 comprises back plate 11d in
a back surface side of frame body 11c to which front surface 11a and back
surface 11b are open, and box body 11e which has an opening in back plate
11d side, and is provided close to front surface 11a of body case 11. In the
opening close to back plate 11d of box body 113, a flange (not shown)
protruding to an inner peripheral side is provided in a periphery, and is
bonded to back plate 11d according to a screwing or the like. Further, box

body 11e is provided with first air intake port 7 and first discharge port 8.
First air intake port 7 forms orifice 11f provided in such a manner as to
protrude into an impeller of air-blow fan 12.
On the other hand, back plate 11d is provided with air-blow fan 12
provided with second air intake port 9, second discharge port 10 and the
motor.
In other words, body case 11 comprises frame body 11c, front plate
11h provided close to front surface 11a of frame body 11c, and back plate
11d provided close to the back surface side of frame body 11c. Further, back
plate 11d is provided with second air intake port 9, and second discharge
port 10, and is configured such that air-blow fan 12 is fixed thereto.
Packing is attached to a periphery close to box body 1 le in an inner
surface side of second discharge port 10 provided in back plate 11d.
Further, guide wall 11g is provided around back plate 11d in a manner to
come into contact with an outer periphery of box body 1 le. Guide wall 11g
is made higher than a height of orifice 11f provided close to box body 11c.
Heat exchanger 14 is installed in such a manner as to be mounted on rail-
shaped stand 19a and stand 19b provided in box body 11c, as shown in FIG.
7.
In other words, heat exchanger device 6 according to Embodiment 1 is
configured such that stands 19a and 19b mounting heat exchanger 14
thereon are provided in box body 11c.
With such a configuration, heat exchanger 14 is precisely positioned,
and is firmly fixed to frame body 11c.
At a time of assembling heat exchanger device 6, heat exchanger 14 is
mounted on stands 19a and 19b, and the flanges provided in back plate 11d
and box body 1 le are bonded thereto. At this time, since a bonding work is

carried out along guide wall 11g, in box body 11c, it is possible to easily
carry out a normal positioning. Further, guide wall 11g is higher than the
height of orifice 11f. Accordingly, even in the case that the bonding work is
carried out while box body 11c is shifted, the flange surface of box body 11c
and guide wall 11g come into contact with each other, whereby the impeller
of air-blow fan 12 does not come into contact with orifice 11f, and is not
damaged. At a time of the flanged joint between box body 1 le and back
plate 11d, the packing is elastically attached closely to second discharge port
10 of heat exchanger 14, thereby carrying out a fixation of heat exchanger
14 and a leakage prevention of the air from the outflow port.
As shown in FIG. 8, heat exchanger device 6 is provided with cover 21
which further includes louver 20 in an outer side of body case 11. Cover 21
is fixed by flange to back plate 11d in such a manner as to cover box body
11c.
In such a configuration, cover 21 is attached to door 22 of cabinet 4
from an inner face side. At a time of maintenance of heat exchanger device
6, door 22 is opened, and body case 11 is detached from the inner side.
In other words, in the heat exchanger device according to
Embodiment 1, the back surface side of frame body 11c constructing box
body 1 le is formed into the flange shape protruding to the inner peripheral
side, and the packing is attached to the periphery close to the inner surface
of second discharge port 10 provided in back plate 1 Id. Further, second
discharge port 10 and air blowoff port 14f for the second environment are
closely attached, at a time of fixing frame body 11c and back plate 11d to the
flange.
With this configuration, it is possible to securely fix heat exchanger
14, and prevent the air from leaking from the outflow port.

Further, a peripheral edge portion of back plate 11d is provided with
guide wall 11g in a manner to come along an outer periphery of frame body
11c.
With this configuration, the heat exchanger device is easily
assembled.
Further, front plate 11h is provided with orifice 11f which leads to the
suction port of air-blow fan 12, and guide wall 11g is configured to be higher
than the height of orifice 11f.
With this configuration, it is possible to easily assemble the heat
exchanger device, and it is possible to rectify the flow of the air caused by
air-blow fan 12.
Further, cover 21 fixed to back plate 11d and the flange in a manner
to cover box body 11c, and cover 21 has louver 20 formed in the front surface
side thereof.
With this configuration, it is possible to protect the configuration
parts which are arranged in the inner portion of the heat exchanger device,
and it is possible to smoothly suck and discharge the outside air.
(Embodiment 2)
Next, a description will be given of Embodiment 2 according to the
present invention with reference to FIGS. 9 to 11.
FIG. 9 is a perspective view of a heat exchanger device according to
Embodiment 2 of the present invention, and FIG. 10 is a configuration view
of an exploded cross section of the heat exchanger device according to
Embodiment 2 of the present invention. FIG. 11 is a configuration view of
an enlarged cross section of a heat exchanger portion of the heat exchanger
device according to Embodiment 2 of the present invention. In this case, the
description thereof may sometimes be omitted, with regard to the same

components as those of Embodiment 1.
As shown in FIGS. 9 and 10, in Embodiment 2, body case 112
comprises back plate 112a in a back surface side of a frame body in which a
front surface and a rear face are open, and box body 112b having an opening
in a side of back plate 112a, and is provided in a front surface side of body
case 112 (which may be expressed as a front surface side of the frame body).
Box body 112b comprises scroll casing 112c which is molded by resin
covering air-blow fan 113, and rectangular parallelepiped case 131 which
covers heat exchanger 114 and is made of a metal. Wedge shaped
depression 112d having a peak in the back surface side is provided in a side
surface of box body 112b. Depression 112d bulges to an inner surface side of
box body 112b as it is, and forms a wedge shaped protruding portion,
although an illustration is omitted. An upper side of the wedge shaped
protruding portion serves as support stand 118a supporting heat exchanger
114 in its lower side. In other words, support stand 118a comes to a side
provided diagonally so as to descend toward back plate 112a side of box body
112b in such a manner as to be along an inclined lower surface of heat
exchanger 114. Further, support stand 118b is provided in such a manner
as to connect end portions in a front surface side of support stand 118a.
Support stand 118b is formed into a rail shape (not shown) protruding to an
inner surface side of box body 112b, and is configured to support the front
surface side of heat exchanger 114 from its lower side.
Heat exchanger 114 shown in FIG. 10 is configured, in the same
manner as Embodiment 1, such that approximately parallelogram plate
bodies are laminated.
Further, cover 115 (not shown) serving as a decorative laminated
sheet is provided, in the same manner as Embodiment 1, in a front surface

side of the heat exchanger device. Cover 115 is provided with a louver (not
shown) for introducing the air in a portion which is opposed to first air
intake port 108, and a louver (not shown) for discharging the air in a portion
which is opposed to first discharge port 109. In box body 112b, partition 119
is provided in a horizontal direction around box body 112b, between first
discharge port 109 and a lower surface (first inflow port 114a), in a portion
which comes to an outer hull of heat exchanger 114. Partition 119 comes
into contact with an inner surface of cover 115 so as to divide an upper
portion (close to first discharge port 109) and a lower portion (close to first
air intake port 108).
As shown in FIG. 10, back plate 112a is provided with heat exchanger
pressing projection 121 in a horizontal direction, in such a manner as to
press heat exchanger 114 to a front surface side. Further, a motor mounting
portion of air-blow fan 113 is provided with depression 122 for a motor in
such a manner as to protrude to an outer side.
As shown in FIG. 11, top surface protrusion 123 set in such a manner
as to press to an inner side of box body 112b is provided in a boundary
portion between top surface 112f of box body 112b and a front surface, that
is, in a side close to a front surface side of top surface 112f. In this top face
protrusion 123, a top portion of heat exchanger 114 is brought into contact
with a corner portion close to a front surface side, and chamber 116 is
formed between top surface 112f of box body 112b and second inflow port
114b of heat exchanger 114.
With such a configuration, since an outer periphery of air-blow fan
113 is formed as scroll casing 112c, it is possible to efficiently flow a wind
toward first inflow port 114a.
Further, since partition 119 is provided in such a manner as to

separate between first air intake port 108 and first discharge port 109, it is
possible to prevent a shortcut between an intake air and a discharge air.
Further, top surface protrusion 123 forms chamber 116 which secures
a distance between the top surface of box body 112b and second inflow port
114b. Accordingly, the air sucked from second air intake port 110 efficiently
flows to second inflow port 114b.
In this case, a drive base plate for driving air-blow fan 113 is attached
to an outer portion of body case 112. Accordingly, since heat generated from
the drive base plate is hard to be conducted to the air which is circulated in
heat exchanger 114, and does not deteriorate heat exchange efficiency, it is
possible to reduce an influence given to the heat exchange efficiency.
In other words, the heat exchanger device according to the present
invention is provided with body case 112, air-blow fan 113 for the first
environment, and heat exchanger 114. In this case, body case 112 is
provided with first air intake port 108 and first discharge port 109 for the
first environment which suck or discharge the outside air, in a front surface
thereof, and second air intake port 110 and second discharge port 111 for
the second environment which suck or discharge the air in the cabinet, in a
back surface thereof. Air blower 113 for the first environment is provided in
body case 112. Heat exchanger 114 carries out a heat exchange between the
air for the first environment and the air for the second environment, in body
case 112.
Heat exchanger 114 is configured such as to include a multilayered
body having a plurality of parallelogram plate bodies multilayered with
predetermined distances, in the same manner as Embodiment 1. In heat
exchanger 114, the air suction port for the first environment and the air
suction port for the second environment are provided in two opposed

surfaces formed thereon. Air blow-off port 1 for the first environment is
provided in one of the other surfaces formed thereon, and the air blow-off
port for the second environment is provided in the surface opposed to the
surface provided with the air blow-off port for the first environment.
Further, the surface provided with the air suction port for the first
environment is directed to air-blow fan 113, and the air blow-off port for the
first environment is placed in contact with first discharge port 109 in body
case 112, and the air blow-off port for the second environment is placed in
contact with second discharge port 111 in body case 112. Further, the heat
exchanger device has chamber 116 formed between second air intake port
110 and the air suction port for the second environment.
Further, body case 112 comprises box body 112b having an opening in
a back surface side thereof, and back plate 112a provided on a back surface
side of box body 112b.
With this configuration, since it is possible to reduce a width of the
multilayered body in which a plurality of plate bodes are laminated so as to
be superposed, it is possible to further reduce the width of heat exchanger
114, and to thus downsize the heat exchanger device. Further, it has
chamber 116 which is formed between second air intake port 110 and the air
suction port for the second environment, and it is possible to change the
direction of the air blower by this chamber 116. Accordingly, it is possible to
arrange a circulation fan serving as the air-blow fan for the second
environment in the outer portion of the heat exchanger device. Therefore, it
is possible to downsize the heat exchanger device.
Further, box body 112b comprises scroll casing 112c portion formed of
a resin material covering the portion having air-blow fan 113 arranged, and
the rectangular parallelepiped portion formed of a metal material covering

heat exchanger 114.
With this configuration, it is possible to form scroll casing 112c
having such a shape as to take into consideration the shape of air-blow fan
113 and the air flow, and heat exchanger 114 can be covered by a cover
which is so11d and has a good heat conduction. Therefore, it is possible to
achieve a compact heat exchanger device in which the heat exchange
efficiency is high.
Further, it is configured such that an inner wall surface of box body
112b is provided with rail shaped support stands 118a and 118b which come
into contact with a periphery of the first environment air suction port of
heat exchanger 114.
With this configuration, it is possible to firmly fix heat exchanger 114
from its lower side.
Further, box body 112b is provided with a wedge shaped protruding
portion on an inner wall surface thereof by forming wedge shaped
depression 112d having a peak in a back surface side thereof, and an upper
side of the wedge shaped protruding portion constitutes a part of support
stands 118a and 118b of heat exchanger 114.
With this configuration, it is possible to precisely position heat
exchanger 114 so as to firmly fix.
Further, box body 112b is provided with a protrusion on an inner
portion thereof where box body 112b is pressed inward at the boundary
between top surface 112f of box body 112b and the front surface, and the
peak portion of heat exchanger 114 is configured to be brought into contact
with a corner portion formed by the protrusion and the front surface of box
body 112b.
With this configuration, it is possible to precisely position heat

exchanger 114 so as to firmly fix.
Further, back plate 112a is configured to have a projection provided
in a manner to press heat exchanger 114 against the front surface side.
With this configuration, it is possible to precisely position heat
exchanger 114 so as to firmly fix.
Further, back plate 112a is configured to be provided with a
depression for mounting a motor for driving air-blow fan 113.
With this configuration, it is possible to precisely position air-blow fan
113 so as to firmly fix.
(Embodiment 3)
Next, a description will be given of Embodiment 3 according to the
present invention with reference to FIGS. 12 to 15. FIG. 12 is a perspective
view of a circulation fan portion of a heat exchanger device according to
Embodiment 3 of the present invention, and FIG. 13 is a perspective view
obtained by cutting a part of the circulation fan portion of the heat
exchanger device according to Embodiment 3 of the present invention. FIG.
14 is a configuration view of an exploded cross section of the circulation fan
portion of the heat exchanger device according to Embodiment 3 of the
present invention, and FIG. 15 is an exploded perspective view of the
circulation fan portion of the heat exchanger device according to
Embodiment 3 of the present invention.
As shown in FIGS. 12 and 13, in a heat exchanger device according to
Embodiment 3, circulation fan 117 is set in box type fan case 131 provided
with suction port 124 for a first environment in a bottom surface so as to
configure circulation fan unit 130. Fan unit discharge port 137 is provided
in a side surface of fan case 131, and is connected to second air intake port 9
of heat exchanger device 6 shown in FIG. 1. Fan case 131 comprises box

body 138 which is constituted by a top surface and side surfaces, and bottom
plate 139 which constitutes a top surface. One of the side surfaces of box
body 138 serves as fan unit discharge port 137.
Further, as shown in FIG. 13, motor 127 of circulation fan 117 is
attached to the top surface of box body 138, however, a mounting position of
a housing is provided with motor mounting portion 132 which is protruded
to an outer side. Further, a periphery of motor mounting portion 132
serving as a mounting position of motor 127 is provided with step portion
133 which is protruded to an outer side in such a manner as to fix a
mounting device of motor 127.
FIG. 14 is a vertical cross sectional view of a segmentation cross
section at the time of exploding circulation fan unit 130. Circulation fan 117
is attached to motor fixing bracket 126 and is thereafter fixed to box body
138. Step portion 133 is formed in conformity to motor fixing bracket 126.
Drive base plate 128 on which a circuit for driving motor 127 is mounted is
attached to motor fixing bracket 126. Bottom plate 139 is provided with
bottom plate partition plate 134 which divides an area in which drive base
plate 128 is provided, and an area in which circulation fan 117 is provided
and a blowing air circulates. As shown in FIGS. 14 and 15, a periphery of
bottom plate 139 is provided with joining portion 135 which is bent at an
acute angle towards box body 138 side. On the contrary, bonding flange 136
coming into surface contact with joining portion 135 is provided in box body
138 side, in such a manner as to be bent inward.
With such a configuration, an upper portion of circulation fan unit
130 can secure a mounting strength of circulation fan 117 by box body 138
provided with a side surface. Further, at the time of maintenance, it can be
carried out by setting bottom plate 139 side to an upper side, and detaching

bottom plate 139. Further, in box body 138, a strength of the top surface
can be secured by step portion 133 for attaching motor fixing bracket 126,
and motor mounting portion 132 serving as the protruding portion.
Further, since drive base plate 128 serving as a heat generation portion and
a section of circulation fan 117 serving as an air-blow path are separated by
bottom plate partition plate 134, heat is hard to be conducted to a
circulation wind path.
In other words, the heat exchanger device according to the present
invention is the heat exchanger device having the same configuration as
Embodiments 1 and 2, and is provided with body case 112, air-blow fan 113
for the first environment, and heat exchanger 114. Heat exchanger 114 is
configured to include the multilayered body having a plurality of plate
bodies multilayered with predetermined distances, in the same manner as
Embodiment 2.
Further, the surface provided with the air suction port for the first
environment is directed to air-blow fan 113, the air blow-off port for the first
environment is placed in contact with first discharge port 109 in body case
112, and the blow-off port for the second environment is placed in contact
with second discharge port 111 in body case 112. Further, the heat
exchanger device has chamber 116 which is formed between second air
intake port 110 and the air suction port for the second environment.
Further, body case 112 comprises box body 138 having an opening in
a back surface side thereof, and back plate 112a provided on a back surface
side of box body 138.
With this configuration, since it is possible to reduce the width of the
multilayered body in which a plurality of plate bodies are laminated and
superposed, it is possible to reduce the width of heat exchanger 114, and it

is possible to downsize the heat exchanger device. Further, it has chamber
116 which is formed between second air intake port 110 and the air suction
port for the second environment, and it is possible to change the direction of
the air blower by chamber 116. Accordingly, it is possible to arrange
circulation fan 117 serving as the air-blow fan for the second environment in
the outer portion of the heat exchanger device. Therefore, it is possible to
downsize the heat exchanger device.
Further, a heating element holder according to the present invention
comprises heat exchanger device 6, cabinet 4, and circulation fan 117 which
have been described in Embodiments 1 to 3 as shown in FIG. 1. In this case,
cabinet 4 forms the second environment provided with the heat generating
body in the inner portion. Further, circulation fan 117 is provided in the top
surface of cabinet 4, and conveys the air in cabinet 4 to the air suction port
for the second environment in heat exchanger device 6.
Further, in the heating element holder, fan case 131 receiving
circulation fan 117 therein comprises box body 138 in which a frame body
and top surface 112f are integrally formed, and bottom plate 139 provided
with the air suction port sucking the air in cabinet 4.
With this configuration, it is possible to achieve a compact heating
element holder in which heat exchange efficiency is high.
Further, bottom plate 139 of fan case 131 has a bent portion formed
by bending a periphery thereof at an acute angle toward box body 138 side,
and box body 138 side of fan case 131 has bonding flange 136 formed by
bending the periphery of bottom plate side inward in a manner to bond to
the bent portion of bottom plate.
With this configuration, the upper portion of circulation fan unit 130
can secure a mounting strength of circulation fan 117 by box body 138

provided with the side surface. Further, at the time of maintenance, it can
be carried out by setting bottom plate 139 side to the upper side, and
detaching bottom plate 139.
Further, the air blow-off port to heat exchanger device 6 is provided
in one of the side surfaces of box body 138 of fan case 131, and bonding
flange 136 in the periphery of the air blow-off port connecting to heat
exchanger device 6.
With this configuration, the upper portion of circulation fan unit 130
can secure the mounting strength of circulation fan 117, by box body 138
provided with the side surface. Further, at the time of maintenance, it can
be carried out by setting bottom plate 139 side to the upper side, and
detaching bottom plate 139.
(Embodiment 4)
Next, a description will be given of Embodiment 4 according to the
present invention with reference to FIGS. 16 to 21. FIG. 16 is a
perspective view of a heat exchanger device according to Embodiment 4 of
the present invention, and FIG. 17 is a perspective view of a scroll casing of
the heat exchanger device according to Embodiment 4 of the present
invention. FIG. 18 is a perspective view of a motor fixing plate of the heat
exchanger device according to Embodiment 4 of the present invention, and
FIG. 19 is a perspective view showing an air-blow fan mounting
configuration of the heat exchanger device according to Embodiment 4 of the
present invention. FIG. 20 is a plan view obtained by enlarging a main part
of an installation of the air-blow fan of the heat exchanger device according
to Embodiment 4 of the present invention, and FIG. 21 is a cross sectional
view showing a configuration to which a motor of the heat exchanger device
according to Embodiment 4 of the present invention is attached.

First of all, a description will be given of air-blow fan 213 with
reference to FIGS. 16 to 18.
As shown in FIGS. 16 and 17, body case 212 comprises back plate
212a close to a back surface side, and box body 212b which is open to back
plate 212a side, and is provided in a front surface side of body case 212
(which also corresponds to a front surface side of a frame body). Box body
212b comprises scroll casing 221 which is molded with a resin covering air-
blow fan 213, and rectangular parallelepiped body case 212 which covers
heat exchanger 214 and is made of a metal. Scroll casing 221 comprises
suction port side plate 221a provided with an ambient air suction port in a
front surface side thereof, side plate opposed to the suction side, and scroll
plate 221c. In this case, side plate opposed to the suction side may used in
common with back plate 212a.
Motor 222 and centrifugal type impeller 223 attached to a rotating
shaft of motor 222 are stored in scroll casing 221. Scroll plate 221c is
integrally provided with control box 224 which protrudes out in a
diametrical direction. A control circuit (not shown) driving motor 222 is
embedded in control box 224. The control box 224 is partitioned from a
space provided with impeller 223 by partition wall 225. Partition wall 225
serves as a scroll plate in a section provided with impeller 223. Further, the
interior portion of the control box 224 is separated a base plate area 226 and
an isolation area 227. Base plate area 226 is provided in an outer side in a
diametrical direction of control box 224, and a base plate mounting the
control circuit is stored therein. Isolation area 227 is provided between the
section provided with impeller 223 and base plate area 226.
As show in FIG. 18, motor 222 is attached to motor fixing plate 228
close to back plate 212a. Motor fixing plate 228 is formed into such a shape

as to close a back surface side (back plate 212a side) of control box 224, and
control base plate accommodation box 229 mounting the control circuit
thereon is provided in a portion closing base plate area 226 in control box
224. Motor fixing plate 228 is attached to base plate 212a. Scroll casing 221
is attached in a state where motor fixing plate 228 and back plate 212a are
fixed. Control base plate accommodation box 229 is received in base plate
area 226.
Motor 222 is fixed in such a manner as to be sandwiched by motor
fixing plate 228 and motor cover 230. Motor cover 230 comprises a portion
which is open in a rotating shaft portion and presses motor 222, and a leg
portion which is connected to motor fixing plate 228. Motor fixing plate 228
is provided with a slit to which the leg portion is fitted, and can be easily
fixed and released by rotating motor cover 230 around the rotating shaft.
Further, the leg portion is provided with wiring fixing portion 231 which is
fixed through a wiring for driving motor 222, thereby facilitating the
fixation of motor 222.
As shown in FIG. 19, the wiring for driving motor 222, that is, lead
wire 233 is temporarily put out of scroll plate 221c to scroll casing 221.
Thereafter, it is guided from notch 232 provided in base plate area 226 of
control box 224 into the control circuit. Further, lead wire 233 is traced into
a bend provided in an end portion of motor fixing plate 228, that is, lead
wire protection portion 234.
In this case, as shown in FIG. 21, vibration proof rubber 235 is
provided between motor 222 and motor fixing plate 228, and makes a
vibration of motor 222 hard to be transmitted to back plate 212a.
With such a configuration, the control circuit for driving motor 222 is
separated from the area through which the ambient air passes, that is, the

area in which impeller 223 is provided. Accordingly, it is possible to obtain
an air blower which is not exposed to a dust mixed into the ambient air and
has high reliability.
Further, since the control circuit is fixed to motor fixing plate 228
integrally with motor 222, it is possible to easily carry out a wiring work
and a thereafter assembling work. Further, isolation area 227 is provided
between base plate area 226 and the area in which impeller 223 is provided.
Accordingly, the heat generation of the control circuit is hard to be
conducted to the blown air.
Further, since isolation area 227 is provided, and the wiring for
driving motor 222 is not passed through isolation area 227, the
configuration is made such that the dust, a water drop and the like are hard
to enter into the control circuit side.
The heat exchanger device using air-blow fan 213 as mentioned above
does not directly come into contact with the control circuit even if it sucks
the ambient air including the dust and the like from the first air intake port
serving as the ambient air intake port. Accordingly, an influence app11cd to
the control circuit by the dust or the like is hard to be generated.
Further, in the heat exchanger device, only air-blow fan 213 is
controlled, the control wiring in the apparatus is completed by motor fixing
plate 228, and it is possible to assemble with a simple work.
In other words, the heat exchanger device according to the present
invention is the heat exchanger device having the same configuration as
Embodiments 1 to 3, and body case 212, air-blow fan 213 for the first
environment, and heat exchanger 214. Heat exchanger 214 is configured to
include the multilayered body having a plurality of plate bodies
multilayered with predetermined distances, in the same manner as

Embodiment 1.
Further, the surface provided with the air suction port for the first
environment is directed to air-blow fan 213, and the air blow-off port for the
first environment is placed in contact with the first discharge port formed in
body case 212, and the air blow-off port for the second environment is placed
in contact with the second discharge port formed in body case 212. Further,
the heat exchanger device has a chamber formed between the second air
intake port and the air suction port for the second environment.
Further, body case 212 comprises the box body having an opening in a
back surface side thereof, and back plate 212a provided on a back surface
side of the box body, and air-blow fan 213 is configured as a centrifugal air
blower.
With this configuration, it has the chamber which is formed between
the second air intake port and the air suction port for the second
environment, and it is possible to change the direction of the air blower by
the chamber. Accordingly, it is possible to arrange the circulation fan
serving as the air-blow fan for the second environment in the outer portion
of the heat exchanger device. Therefore, it is possible to downsize the heat
exchanger device. Further, since the control circuit integral type centrifugal
air blower which is not exposed to the dust is used, it is possible to downsize
the heat exchanger device.
Further, the centrifugal air blower comprises motor 222 and impeller
223 encased in scroll casing 221 having suction port side plate 221a
provided with an ambient air suction port, side plate opposed to the suction
side and scroll plate 221c. Further, scroll plate 221c is provided with control
box 224 protruding in a diametrical direction, and containing a control
circuit for driving motor 222. Control box 224 is separated from a space

housing impeller 223.
With this configuration, it is possible to protect the control circuit
from the dust which is sucked into the centrifugal air blower, and it is
further possible to downsize the heat exchanger device based on the control
circuit integral type configuration.
Further, scroll casing 221 is configured such that suction port side
plate 221a and scroll plate 221c are integrally molded by the resin so as to
be fixed to side plate opposed to the suction side.
With this configuration, it is possible to further downsize the heat
exchanger device.
Further, motor 222 is configured to be fixed to the fixing plate
provided on the side opposite the ambient air suction port, and the control
circuit is configured to be fixed onto the fixing plate.
With this configuration, it is possible to further downsize the heat
exchanger device.
Further, motor 222 is configured to be fixed by the fixing plate, and
motor cover 230 which is formed so as to sandwich motor 222 with the fixing
plate.
With this configuration, the control circuit is not exposed to the air
including the dust, and the centrifugal air blower having high reliability can
be obtained. As a result, it is possible to realize a heat exchanger device
having high reliability. Further, since motor 222 is firmly and compactly
fixed, it is possible to downsize the heat exchanger device.
Further, motor cover 230 has a fixing hole for fixing wiring fixing
portion 231 provided in motor 222.
With this configuration, it is possible to bring together the control
wiring based on a simple wiring work and to thus assemble with a simple

work.
Further, scroll casing 221 is configured to be integrally provided with
control box 224.
With this configuration, the control circuit is not exposed to the air
including the dust, and it is possible to obtain a centrifugal air blower
having high reliability. As a result, it is possible to realize a heat exchanger
device having high reliability. Further, it is possible to downsize the heat
exchanger device.
Further, scroll casing 221 is provided with a partition plate
separating the space of impeller 223 from a section having control box 224.
With this configuration, the control circuit is not exposed to the air
including the dust, and it is possible to obtain a centrifugal air blower
having high reliability. As a result, it is possible to realize a heat exchanger
device having high reliability. Further, it is possible to downsize the heat
exchanger device.
Further, scroll casing 221 is configured to be provided with isolation
area 227 separating the space of impeller 223 from the section having
control box 224.
With this configuration, the control circuit is not exposed to the air
including the dust, and it is possible to obtain a centrifugal air blower
having high reliability. As a result, it is possible to realize a heat exchanger
device having high reliability. Further, it is possible to downsize the heat
exchanger device.
Further, an electric wiring connecting the control circuit and motor
222 is routed from the space impeller 223 into control box 224 via the
outside of scroll casing 221 without passing through the isolation area 227.
With this configuration, it is possible to bring together the control

wiring based on a simple wiring work, and it is possible to assemble with a
simple work.
Further, the heating element holder according to the present
invention comprises heat exchanger device 6, cabinet 4, and the circulating
fan which have been described in Embodiments 1 to 3 as shown in FIG. 1.
In this case, cabinet 4 forms a second environment provided with a heat
generating body in its inner portion. Further, the circulating fan is provided
on a top surface of cabinet 4 for delivering the air in cabinet 4 to the air
suction port for the second environment of heat exchanger device 6.
Further, in the heating element holder, the fan case enclosing the
circulating fan comprises a box body integrally formed by a frame body and
top surface 112f, and bottom plate 139 provided with the air suction port for
sucking the air in cabinet 4.
With this configuration, it is possible to realize a compact heating
element holder in which heat exchange efficiency is high. Further, the
control circuit is not exposed to the air including the dust, and it is possible
to obtain a centrifugal air blower having high reliability. As a result, it is
possible to realize a heating element holder having high reliability.
Further, it is possible to downsize the heating element holder.
INDUSTRIAL APPLICABILITY
As mentioned above, in the heat exchanger device according to the
present invention, it is possible to arrange the circulation fan serving as the
air-blow fan for the second environment in the outer portion of the heat
exchanger device, and it is possible to downsize the heat exchanger device.
Therefore, it becomes extremely useful for the cooling equipment, for
example, in the base station of the communication equipment having a

limited installation area, and the other outdoor installed equipment.
REFERENCE MARKS IN THE DRAWINGS
1: Building
2: Rooftop
3: Base station
4: Cabinet
5: Transmitting and receiving portion
6: Heat exchanger device
7, 108: First air intake port
8, 109: First discharge port
9, 110: Second air intake port
10, 111: Second discharge port
11, 112, 212: Body case
11a: Front surface
11b: Back face
11c: Frame body
11d, 112a, 212a: Back plate
11c, 112b, 138, 212b: Box body
11f Orifice
11g: Guide wall
12, 113, 213: Blower fan
14, 114, 214: Heat exchanger
14a: Air suction port for first environment
14b: Air suction port for second environment
14c: Multilayered body
14d: Parallelogram plate body

14e: Air blow-off port for first environment
14f Air blow-off port for second environment
16, 116: Chamber
17, 117: Circulation fan
19a, 19b: Stand
20: Louver
21, 115: Cover
22: Door
112c, 221: Scroll casing
112d: Depression
112f: Top panel
114a: First inflow port
114b: Second inflow port
118a, 118b: Support stand
119: Partition
121: Heat exchanger pressing projection
122: Depression for motor
123: Top plane protrusion
124: Suction port for first environment
126: Motor fixing bracket
127, 222: Motor
128: Drive base plate
130: Circulation fan unit
131: Case
132: Motor mounting portion
133: Step portion
134: Bottom plate partition plate

135: Joint portion
136: Bonding flange
137: Fan unit discharge port
139: Bottom plate
22 1a: Suction port side plate
221b: Side plate opposed to suction side
221c: Scroll plate
223: Impeller
224: Control box
225: Partition wall
226: Base plate area
227: Isolation area
228: Motor fixing plate
229: Control base plate storage box
230: Motor cover
231: Wiring fixing portion
232: Notch
233: Lead wire
234: Lead wire protection portion
235: Vibration proof rubber
We claim :
1. A heat exchanger device comprising"
a body case provided with a first air intake port and a first discharge
port for a first environment in a front surface thereof, and a second air
intake port and a second discharge port for a second environment in a back
surface thereof;
an air-blow fan for the first environment provided in the body case!
and
a heat exchanger inside the body case for exchanging heat between
air in the first environment and air in the second environment, wherein
the heat exchanger includes a multilayered body having a plurality
of parallelogram plate bodies multilayered with predetermined distances,
the multilayered body having the multilayered parallelogram plate
bodies is provided with an air suction port for the first environment and an
air suction port for the second environment in two opposed surfaces thereof,
the multilayered body having the multilayered parallelogram plate bodies is
further provided with an air blowoff port for the first environment in one of
the other surfaces formed thereon, and an air blow-off port for the second
environment in another surface opposed to the surface having the air blow-
off port for the first environment,
the surface provided with the air suction port for the first
environment is directed to the air-blow fan,
the air blow-off port for the first environment is placed in contact
with the first discharge port formed in the body case, and the air blow-off
port for the second environment is placed in contact with the second
discharge port formed in the body case, and

the heat exchanger has a chamber formed between the second air
intake port and the air suction port for the second environment.
2. The heat exchanger device according to claim 1, wherein
the body case comprises a frame body, a front plate and a box body
provided in a front surface side of the frame body, and a back plate provided
in a back surface side of the frame body,
the second air intake port and the second discharge port are formed
in the back plate, and
the air-blow fan is fixed to the back plate.
3. The heat exchanger device according to claim 2, wherein the box
body is provided with a stand for mounting the heat exchanger.
4. The heat exchanger device according to claim 2, wherein
a back surface side of the frame body constructing the box body is
formed into a flange shape protruding to an inner peripheral side,
a packing is attached around an inner surface side of the second
discharge port formed in the back plate, and
the second discharge port and the air blow-off port for the second
environment are closely attached when fixing the frame body and the back
plate to the flange.
5. The heat exchanger device according to claim 2, wherein the back
plate is provided with a guide wall around a peripheral edge portion thereof
in a manner to come along an outer periphery of the frame body.
6. The heat exchanger device according to claim 5, wherein the front
plate is provided with an orifice guiding to a suction port of the air-blow fan,
and the guide wall is made higher than a height of the orifice.
7. The heat exchanger device according to claim 2 further comprising
a cover fixed to the back plate and the flange in a manner to cover the box
body, and the cover has a louver formed in a front surface side thereof.
8. The heat exchanger device according to claim 1, wherein the body
case comprises-
a box body having an opening in a back surface side thereof, and
a back plate provided on the back surface side of the box body,
wherein an inner wall surface of the box body is provided with a rail
shaped support stand in contact with a periphery of an air suction port for
the first environment of the heat exchanger.
9. The heat exchanger device according to claim 8, wherein the box
body is provided with a wedge shaped protruding portion on an inner wall
surface thereof by forming a wedge shaped depression having a peak in a
back surface side thereof, and an upper side of the wedge shaped protruding
portion constitutes a part of the support stand of the heat exchanger.
10. The heat exchanger device according to claim 1, wherein the body
case comprises :
a box body having an opening in a back surface side thereof, and
a back plate provided on the back surface side of the box body,
wherein the box body is provided with a protrusion on an inner

portion thereof where the box body is pressed inward at the boundary
between a top face and a front surface, and a top portion of the heat
exchanger is brought into contact with a corner portion formed by the
protrusion and the front surface of the box body.
11. The heat exchanger device according to claim 1, wherein the body
case comprises-
a box body having an opening in a back surface side thereof, and
a back plate provided on the back surface side of the box body,
wherein the back plate has a projection provided in a manner to
press the heat exchanger against the front surface side.
12. The heat exchanger device according to claim 1, wherein the body
case comprises:
a box body having an opening in a back surface side thereof! and
a back plate provided on a back surface side of the box body, and the
air-blow fan comprises a centrifugal air blower,
wherein the centrifugal air blower comprises a motor and an impeller
encased in a scroll casing having a suction port side plate provided with an
ambient air suction port, a side plate opposed to the suction side and a scroll
plate, the scroll plate is provided with a control box protruding in a
diametrical direction and containing a control circuit for driving the motor,
and the control box is separated from a space housing the impeller.
13. The heat exchanger device according to claim 12, wherein the
scroll casing comprises a resin integrally molding the suction port side plate
with the scroll plate, and fixed to the side plate opposed to the suction side.

14. The heat exchanger device according to claim 12, wherein the
motor is fixed to a fixing plate provided on the side opposite the ambient air
suction port, and the control circuit is fixed onto the fixing plate.
15. A heating element holder comprising:
a heat exchanger device according to claim 1"
a cabinet containing therein a heat generating body and forming a
second environment; and
a circulating fan provided on a top surface of the cabinet for
delivering the air in the cabinet to an air suction port for the second
environment of the heat exchanger device,
wherein a fan case enclosing the circulating fan comprises a box body
of integrally formed frame body and top surface, and a bottom plate
provided with an air suction port for sucking the air in the cabinet.

A heat exchanger device having a body case provided with a first air intake
port and a first discharge port for a first environment in a front surface
thereof, and a second air intake port and a second discharge port for a
second environment in a back surface thereof, an air-blow fan for the first
environment provided in the body case, and a heat exchanger inside the
body case for exchanging heat between the air in the first environment and
the air in the second environment, and is configured such that opposed two
surfaces are provided with an air suction port for a first environment and an
air suction port for a second environment, respectively, and the other
surface is provided with an air blow-off port for the first environment and an
air blow-off port for the second environment, respectively.