DESCRIPTION
HEAT GENERATING BODY BOX HOUSING REFRIGERATION DEVICE
TECHNICAL FIELD
The present invention relates to a heat generating body box housing
refrigeration device.
BACKGROUND ART
A heat generating body box housing a refrigeration device is used to
refrigerate the inside of a box housing, such as a mobile-phone base station,
which is closed while provided with an electronic component generating heat
therein.
Recently a heat generation amount from a control board markedly
increases with enhanced performance of the electronic component and with
greater densities of the electronic components on the control board. With the
progress of miniaturization of the box housing for the electronic components,
there is a demand for the high performance and miniaturization of the
refrigeration device and enhancement of a degree of freedom of a layout that
the refrigeration device is installed in either a side surface or a top side of the
box housing. For this reason, a method in which a heat pipe having a large
heat transfer amount is used while the number of components decreases is
well known as a method for refrigerating a refrigeration device (for example,
PTL 1).
However, in the heat pipe, refrigerant steam that ascends by boiling
and vaporization and refrigerant liquid that descends by condensation and
devolatilization move in the same pipe. Therefore, the refrigerants face each
other to disadvantageously degrade refrigerant circulation efficiency and
heat exchange efficiency. For this reason, an evaporator that boils and
vaporizes the refrigerant is separated from a condenser that condenses and
devolatilizes the refrigerant. That is, a refrigerant steam pipe that
communicates between the evaporator and the condenser is provided in order
that the refrigerant boiled and vaporized by the evaporator moves to the
condenser. A refrigerant liquid pipe that communicates between the
condenser and the evaporator is also provided in order that the refrigerant
condensed and devolatilized by the condenser moves to the evaporator.
Specifically, there is well known a boiling refrigeration device, in which a
refrigerant circuit is formed by the refrigerant steam pipe and the refrigerant
liquid pipe and the refrigerant is circulated to efficiently release heat (for
example, PTL 2).
The boiling refrigeration device as the heat generating body box
housing refrigeration device of the background art will be described below
with reference to FIGS. 20A and 20B. FIG. 20A is a front view illustrating
the heat generating body box housing refrigeration device of the background
art, and FIG. 20B is a side view illustrating the heat generating body box
housing refrigeration device.
Boiling refrigeration device 201 is provided in main body box 207, and
main body box 207 is partitioned by partition plate 206 to include a
high-temperature portion 203 to which high-temperature air 202 vents
located in a lower portion of main body box 207 and a low-temperature
portion 205 to which low-temperature air 204 vents in an upper portion of
main body box 207. Evaporator 209 in which refrigerant 208 is enclosed is
disposed in high-temperature portion 203. Evaporator 209 receives the heat
from high-temperature air 202 to boil and vaporize refrigerant 208.
Condenser 210 communicating with evaporator 209 is disposed in
lowtemperature portion 205. In condenser 210, refrigerant 208 boiled and
vaporized by evaporator 209 releases the heat to low-temperature air 204,
and refrigerant 208 is condensed and devolatilized. Evaporator 209 and
condenser 210 communicate with each other by refrigerant steam pipe 211
and refrigerant liquid pipe 212, which pierce the partition plate 206.
Indoor-side blower 213 that blows high-temperature air 202 to
high-temperature portion 203 and outdoor-side blower 214 that blows
lowtemperature air 204 to lowtemperature portion 205 are also included.
According to the above configuration, refrigerant 208 boiled and vaporized by
evaporator 209 moves from evaporator 209 to condenser 210 through
refrigerant steam pipe 211 by a density difference. Refrigerant 208
condensed and devolatilized by condenser 210 moves from condenser 210 to
evaporator 209 through refrigerant liquid pipe 212 by the density difference.
Therefore, refrigerant 208 naturally circulates to release the heat of
high-temperature air 202 to lowtemperature air 204.
In the heat generating body box housing refrigeration device of the
background art, in order to efficiently exert capabilities of condenser 210 and
evaporator 209, refrigerant steam pipe 211 and refrigerant liquid pipe 212
are diagonally provided such that the refrigerant evenly circulates to the
whole surfaces of condenser 210 and evaporator 209. However, a circulation
resistance increases with increasing distance from a point at which
refrigerant steam pipe 211 of a header in an upper portion of evaporator 209
is connected toward an opposite corner portion in which the steam pipe is not
connected. As a result, unfortunately the refrigerant circulation efficiency is
degraded to decrease the heat exchange efficiency.
Citation Lists
Patent Literatures
PTL l: Unexamined Japanese Patent Publication No. S60-113498
PTL 2: Unexamined Japanese Patent Publication No. H9-326582
SUMMARY OF THE INVENTION
A heat generating body box housing refrigeration device of the
present invention that refrigerates a heat generating body box housing
accommodating a heat generating body includes: a first condenser and a
second condenser that condense a refrigerant; a first evaporator and a second
evaporator that vaporize the refrigerant; and an outdoor blower that sucks
air outside of the heat generating body box housing and blows the air to
promote heat transfers of the first condenser and the second condenser,
wherein the first condenser and the first evaporator are connected with a
first refrigerant liquid pipe and a first refrigerant steam pipe to constitute a
first refrigerant cycle, the second condenser and the second evaporator are
connected with a second refrigerant liquid pipe and a second refrigerant
steam pipe to constitute a second refrigerant cycle, the first condenser of a
rectangular shape includes a first condenser steam header on an upper side
and a first condenser liquid header on a lower side, the first evaporator of a
rectangular shape includes a first evaporator steam header on an upper side
and a first evaporator liquid header on a lower side, the second condenser of a
rectangular shape includes a second condenser steam header on an upper
side and a second condenser liquid header on a lower side, the second
evaporator of a rectangular shape includes a second evaporator steam header
on an upper side and a second evaporator liquid header on a lower side, the
first condenser, the second condenser, the first evaporator, and the second
evaporator are vertically disposed with distances provided from one another,
the first refrigerant liquid pipe is connected between a first joint in one end
portion of the first condenser liquid header and a second joint in one end
portion of the first evaporator liquid header, the first refrigerant steam pipe
is connected between a third joint of the first condenser steam header and a
fourth joint of the first evaporator steam header, the third joint located
diagonally with respect to the first joint in the first condenser, and, the fourth
joint located diagonally with respect to the second joint in the first evaporator,
the second refrigerant liquid pipe is connected between a fifth joint of the
second condenser liquid header and a sixth joint of the second evaporator
liquid header, the fifth joint located in a position facing another end portion
different from that of the first joint, and the sixth joint located in a position
facing another end portion different from that of the second joint, and the
second refrigerant steam pipe is connected between a seventh joint of the
second condenser liquid header and an eighth joint of the second evaporator
liquid header, the seventh joint located in a position facing another end
portion different from that of the third joint, and the eighth joint located in a
position facing another end portion different from that of the fourth joint.
According to the above configuration, in the first refrigerant cycle and
the second refrigerant cycle, the refrigerant circulation efficiency is degraded
with increasing distance toward the end portion in which the steam pipe is
not connected in the opposite direction to the point at which the steam pipe is
connected in the upper portion of the evaporator, and the portion in which the
heat exchange efficiency is degraded becomes the opposite direction to the
direction of the refrigerant circulation efficiency. As a result, the heat
generating body box housing refrigeration device in which the capability
degradation of the heat exchange efficiency and refrigerant circulation
efficiency can be compensated to improve the heat exchange efficiency can be
obtained.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a side view illustrating a heat generating body box housing
refrigeration device of a first exemplary embodiment of the present
invention.
FIG. 2 is a perspective view illustrating a lower back surface of the
heat generating body box housing refrigeration device.
FIG. 3 is a perspective view illustrating an upper front surface of the
heat generating body box housing refrigeration device.
FIG. 4 is an explanatory view illustrating refrigerant circulations of a
first refrigerant cycle and a second refrigerant cycle in the heat generating
body box housing refrigeration device.
FIG. 5 is a sectional side view schematically illustrating a heat
generating body box housing refrigeration device of a second exemplary
embodiment of the present invention.
FIG. 6 is a sectional side view schematically illustrating a heat
generating body box housing refrigeration device of a third exemplary
embodiment of the present invention.
FIG. 7 is a sectional side view schematically illustrating a heat
generating body box housing refrigeration device of a fourth exemplary
embodiment of the present invention.
FIG. 8 is a sectional side view schematically illustrating a heat
generating body box housing refrigeration device of a fifth exemplary
embodiment of the present invention.
FIG. 9 is a sectional side view schematically illustrating a heat
generating body box housing refrigeration device of a sixth exemplary
embodiment of the present invention.
FIG. 10 is a sectional side view schematically illustrating a heat
generating body box housing refrigeration device of a seventh exemplary
embodiment of the present invention.
FIG. 11 is a front view illustrating a heat generating body box
housing refrigeration device of an eighth exemplary embodiment of the
present invention.
FIG. 12 is a sectional side view schematically illustrating a heat
generating body box housing refrigeration device of a ninth exemplary
embodiment of the present invention.
FIG. 13A is a horizontal sectional view schematically illustrating a
condenser side of a heat generating body box housing refrigeration device of a
tenth exemplary embodiment of the present invention.
FIG. 13B is a sectional side view schematically illustrating the heat
generating body box housing refrigeration device.
FIG. 14 is a perspective view illustrating a front surface of the heat
generating body box housing refrigeration device.
FIG. 15 is a perspective view illustrating a back surface of the heat
generating body box housing refrigeration device.
FIG. 16 is an explanatory view illustrating a liquid pipe partition hole
piercing position portion of the heat generating body box housing
refrigeration device.
FIG. 17 is an explanatory view illustrating a position of a steam pipe
partition hole piercing portion of the heat generating body box housing
refrigeration device.
FIG. 18 is an explanatory view illustrating a gradient of a refrigerant
liquid pipe of the heat generating body box housing refrigeration device.
FIG. 19 is an explanatory view illustrating a gradient of a refrigerant
steam pipe of the heat generating body box housing refrigeration device.
FIG. 20A is a front view illustrating a heat generating body box
housing refrigeration device of the background art.
FIG. 20B is a side view illustrating the heat generating body box
housing refrigeration device.
DESCRIPTION OF EMBODIMENTS
Hereinafter, exemplary embodiments of the present invention will be
described with reference to the drawings.
FIRST EXEMPLARY EMBODIMENT
FIG. 1 is a side view illustrating a heat generating body box housing
refrigeration device of a first exemplary embodiment of the present invention.
As illustrated in FIG. 1, for example, heat generating body box housing
refrigeration device 1 includes an electronic component generating heat like
a mobile-phone base station, and heat generating body box housing
refrigeration device 1 is installed above and below a top side (partition plate
9) of closed heat generating body box housing 2. In heat generating body box
housing refrigeration device 1, indoor blower 3 and outdoor blower 4 blow air
such that high-temperature air 5 and low-temperature air 6 flow in opposite
directions to each other.
FIG. 2 is a perspective view illustrating a lower back surface of heat
generating body box housing refrigeration device of the first exemplary
embodiment of the present invention. As illustrated in FIGS. 1 and 2, heat
generating body box housing refrigeration device 1 is disposed in main body
box 10 such that high-temperature portion 7 in which high-temperature air 5
vents is located in a lower portion of partition plate 9 and such that
lowtemperature portion 8 in which low-temperature air 6 vents is located in
an upper portion of partition plate 9.
Rectangular first evaporator 14 is disposed in high-temperature
portion 7, and includes first evaporator steam header 11 on an upper side and
first evaporator liquid header 12 on a lower side. First evaporator 14 is
disposed while inclined backward (or forward) with respect to a vent
direction of indoor blower 3. Refrigerant 13 (for example, R134a) is enclosed
in first evaporator 14, and refrigerant 13 receives the heat from
high-temperature air 5 and is boiled and vaporized.
Similarly, rectangular second evaporator 17 is disposed in
high-temperature portion 7, and includes second evaporator steam header 15
on the upper side and second evaporator liquid header 16 on the lower side.
Second evaporator 17 is disposed below first evaporator 14 while inclined in
the same direction as first evaporator 14. Refrigerant 13 (for example,
R134a) is enclosed in second evaporator 17, and refrigerant 13 receives the
heat from high-temperature air 5 and is boiled and vaporized.
Rectangular first condenser 20 is disposed in low-temperature
portion 8, and includes first condenser steam header 18 on the upper side and
first condenser liquid header 19 on the lower side. First condenser 20 is
communicated with first evaporator 14, and first condenser 20 is disposed
while inclined in the same direction as first evaporator 14. First condenser
20 condenses and devolatilizes a steam of boiled and vaporized refrigerant 13
by releasing the heat of the steam of refrigerant 13 to low-temperature air 6.
Similarly, rectangular second condenser 23 is disposed in low-temperature
portion 8, and includes second condenser steam header 21 on the upper side
and second condenser liquid header 22 on the lower side. Second condenser
23 is communicated with second evaporator 17, and second condenser 23 is
disposed below first condenser 20 while inclined in the same direction as first
condenser 20. Second condenser 23 condenses and devolatilizes a steam of
boiled and vaporized refrigerant 13 by releasing the heat of the steam of
refrigerant 13 to lowtemperature air 6. At this point, first condenser 20,
second condenser 23, first evaporator 14, and second evaporator 17 are
vertically disposed in parallel with distances provided from one another.
First refrigerant steam pipe 24 is connected to a right or left end
portion of each of first evaporator steam header 11 and first condenser steam
header 18 while piercing partition plate 9, whereby first refrigerant steam
pipe 24 communicates between first evaporator steam header 11 and first
condenser steam header 18. Similarly, second refrigerant steam pipe 25 is
connected to end portions of second evaporator steam header 15 and second
condenser steam header 21 while piercing partition plate 9, whereby second
refrigerant steam pipe 25 communicates between second evaporator steam
header 15 and second condenser steam header 21.
FIG. 3 is a perspective view illustrating an upper front surface of the
heat generating body box housing refrigeration device of the first exemplary
embodiment of the present invention. First refrigerant liquid pipe 26
communicates between first evaporator liquid header 12 and first condenser
liquid header 19 while piercing partition plate 9. First refrigerant liquid pipe
26 is diagonally connected with respect to first refrigerant steam pipe 24.
Similarly, second refrigerant liquid pipe 27 communicates between second
evaporator liquid header 16 and second condenser liquid header 22 while
piercing partition plate 9. Second refrigerant liquid pipe 27 is diagonally
connected with respect to second refrigerant steam pipe 25.
That is, in FIGS. 2 and 3, first refrigerant liquid pipe 26 is connected
between first joint 41 in one end portion of first condenser liquid header 19
and second joint 42 in one end portion of first evaporator liquid header 12.
First refrigerant steam pipe 24 is connected between third joint 43 of first
condenser steam header 18 and fourth joint 44 of first evaporator steam
header 11, which is diagonally located with respect to first joint 41 in first
condenser 20, and fourth joint 44 which is located with respect to second joint
42 in first evaporator 14.
Second refrigerant liquid pipe 27 is connected between fifth joint 45 of
second condenser liquid header 22 and sixth joint 46 of second evaporator
liquid header 16, fifth joint 45 which is located in a position facing another
end portion different from that of first joint 41, and sixth joint 46 which is
located in a position facing another end portion different from that of second
joint 42. Second refrigerant steam pipe 25 is connected between seventh joint
47 of second condenser liquid header 22 and eighth joint 48 of second
evaporator liquid header 16, seventh joint 47 which is located in a position
facing another end portion different from that of third joint 43, and eighth
joint 48 which is located in a position facing another end portion different
from that of fourth joint 44.
As illustrated in FIG. 1, heat generating body box housing
refrigeration device 1 includes first refrigerant cycle 28 indicated by a dotted
line and second refrigerant cycle 29 indicated by an alternate long and short
dash line. First refrigerant cycle 28 is constructed such that first condenser
20 and first evaporator 14 are connected by first refrigerant liquid pipe 26
and first refrigerant steam pipe 24 in FIGS. 2 and 3. Second refrigerant cycle
29 is constructed such that second condenser 23 and second evaporator 17 are
connected by second refrigerant liquid pipe 27 and second refrigerant steam
pipe 25.
Thus, heat generating body box housing refrigeration device 1 of the
first exemplary embodiment of the present invention includes first condenser
20 and second condenser 23 that condense the refrigerant and first
evaporator 14 and second evaporator 17 that vaporize the refrigerant. Heat
generating body box housing refrigeration device 1 also includes outdoor
blower 4 that sucks air outside of heat generating body box housing 2 to
promote heat transfers of first condenser 20 and second condenser 23.
FIG. 4 is an explanatory view illustrating refrigerant circulations of a
first refrigerant cycle and a second refrigerant cycle in the heat generating
body box housing refrigeration device of the first exemplary embodiment of
the present invention. As illustrated in FIG. 4, in first refrigerant cycle 28,
refrigerant circulation efficiency becomes better on the side of first
refrigerant steam pipe 24 of first evaporator 14. On the other hand, on the
opposite side to first refrigerant steam pipe 24, the steam is hardly
discharged, the circulation efficiency decreases to become high temperature,
thereby decreasing heat exchange efficiency.
In second refrigerant cycle 29 that becomes a symmetric cycle, the
refrigerant circulation efficiency becomes better on the side of second
refrigerant steam pipe 25 of second evaporator 17. On the opposite side to
first refrigerant steam pipe 24, the steam is hardly discharged, the
circulation efficiency decreases to become high temperature, thereby
decreasing the heat exchange efficiency. That is, heat generating body box
housing refrigeration device 1 is used while the efficient portion of first
refrigerant cycle 28 and the inefficient portion of second refrigerant cycle 29
overlap the inefficient portion of first refrigerant cycle 28 and the efficient
portion of second refrigerant cycle 29. As a result, the decreased capabilities
of first refrigerant cycle 28 and second refrigerant cycle 29 can be
compensated to obtain heat generating body box housing refrigeration device
1 in which the heat exchange efficiency is enhanced.
First condenser 20 and second condenser 23, and first evaporator 14
and second evaporator 17 are inclined in the same directions. As a result, an
installation space can vertically be reduced to facilitate the connections of
first refrigerant liquid pipe 26, second refrigerant liquid pipe 27, first
refrigerant steam pipe 24, and second refrigerant steam pipe 25.
As illustrated in FIG. 1, in heat generating body box housing
refrigeration device 1 of the first exemplary embodiment of the present
invention, the plural condensers and evaporators are connected by liquid
pipes and the steam pipes from the lower stage. In lower-stage second
refrigerant cycle 29, second evaporator 17 has an advantage to the
refrigerant vaporization because high-temperature air 5 directly vents
through second evaporator 17. However, second condenser 23 has a
disadvantage to the refrigerant condensation because second condenser 23 is
refrigerated using low-temperature air 6 that passes through first condenser
20 to raise temperature.
In an upper-stage first refrigerant cycle 28, first evaporator 14 has
the disadvantage to the refrigerant vaporization because first evaporator 14
is heated by high-temperature air 5 that passes through second evaporator
17 to lower the temperature. On the other hand, first condenser 20 has the
advantage to the refrigerant condensation because low-temperature air 6
directly vents to first condenser 20.
Thus, a bias of the capability of each cycle is eliminated, whereby the
capabilities of the evaporator and condenser are hardly saturated or stop of
the cycle is hardly generated. As a result, the heat generating body box
housing refrigeration device of the first exemplary embodiment of the present
invention is stabilized.
SECOND EXEMPLARY EMBODIMENT
In a heat generating body box housing refrigeration device according
to a second exemplary embodiment of the present invention, the same
structural element as the first exemplary embodiment is designated by the
same reference mark, and its detailed description is omitted.
FIG. 5 is a sectional side view schematically illustrating the heat
generating body box housing refrigeration device of the second exemplary
embodiment of the present invention. As illustrated in FIG. 5, third
refrigerant cycle 30 that is identical to first refrigerant cycle 28 and second
refrigerant cycle 29 is provided in a position in which first refrigerant cycle
28 and second refrigerant cycle 29 are shifted in parallel. The three
refrigerant cycles are provided in the heat generating body box housing
refrigeration device of the second exemplary embodiment of the present
invention.
As a result, because the heat generating body box housing
refrigeration device can further ensure the refrigeration capability of heat
exchange treatment performed by third refrigerant cycle 30, it is not
necessary to enlarge horizontal and vertical dimensions of the evaporators
and condensers of first refrigerant cycle 28 and second refrigerant cycle 29.
The capability can flexibly be changed as needed basis while the dimensions
are not changed by adjusting the number of refrigerant cycles.
THIRD EXEMPLARY EMBODIMENT
In a heat generating body box housing refrigeration device according
to a third exemplary embodiment of the present invention, the same
structural element as the first exemplary embodiment is designated by the
same reference mark, and its detailed description is omitted.
FIG. 6 is a sectional side view schematically illustrating the heat
generating body box housing refrigeration device of the third exemplary
embodiment of the present invention. As illustrated in FIG. 6, in first
condenser 20 and second condenser 23 that are adjacent to each other, first
condenser liquid header 19 and second condenser liquid header 22 are
separated from each other while first condenser steam header 18 and second
condenser steam header 21 are brought close to each other. That is, in first
condenser 20 and second condenser 23, a distance between first condenser
liquid header 19 and second condenser liquid header 22 is greater than a
distance between first condenser steam header 18 and second condenser
steam header 21.
Therefore, a proportion of a vent amount of low-temperature air 6,
which directly vents to second condenser 23 without passing through first
condenser 20, increases. As a result, the temperature of the air entering
second condenser 23 is raised to ensure a temperature difference of the air
before and after the air passes through second condenser 23, so that the heat
generating body box housing refrigeration device that can enhance the
refrigeration capability of second condenser 23 is obtained.
FOURTH EXEMPLARY EMBODIMENT
In a heat generating body box housing refrigeration device according
to a fourth exemplary embodiment of the present invention, the same
structural element as the first exemplary embodiment is designated by the
same reference mark, and its detailed description is omitted.
FIG. 7 is a sectional side view schematically illustrating the heat
generating body box housing refrigeration device of the fourth exemplary
embodiment of the present invention. As illustrated in FIG. 7, in first
condenser 20 and second condenser 23 that are disposed in parallel at a
distance, guide plates 31 and 32 are provided in first condenser liquid header
19 and second condenser liquid header 22 so as to be parallel to an air flow
(low-temperature air 6) generated by outdoor blower 4 in FIG. 1.
Guide plates 31 and 32 facilitate the ventilation of low-temperature
air 6 to second condenser 23 disposed in the lower stage. As a result, the heat
exchange performance is improved in the heat generating body box housing
refrigeration device of the fourth exemplary embodiment of the present
invention.
FIFTH EXEMPLARY EMBODIMENT
In a heat generating body box housing refrigeration device according
to a fifth exemplary embodiment of the present invention, the same
structural element as the first exemplary embodiment is designated by the
same reference mark, and its detailed description is omitted.
FIG. 8 is a sectional side view schematically illustrating the heat
generating body box housing refrigeration device of the fifth exemplary
embodiment of the present invention. As illustrated in FIG. 8, sealing
component 33 that seals a gap between partition plate 9 and second
condenser liquid header 22 is formed into an inclination shape so as to be
substantially parallel to second condenser 23. That is, sealing component 33
having the inclination provided between partition plate 9 and one of first
condenser 20 and second condenser 23, which is located closer to partition
plate 9.
According to the above configuration, sealing component 33 guides a
wind to a gap between first condenser 20 and second condenser 23, which are
disposed in parallel at a distance, so that the ventilation of low-temperature
air 6 is easily performed to lower-stage second condenser 23 while an original
sealing function is secured. As a result, the heat exchange performance is
improved in the heat generating body box housing refrigeration device of the
fifth exemplary embodiment of the present invention.
SIXTH EXEMPLARY EMBODIMENT
In a heat generating body box housing refrigeration device according
to a sixth exemplary embodiment of the present invention, the same
structural element as the first exemplary embodiment is designated by the
same reference mark, and its detailed description is omitted.
FIG. 9 is a sectional side view schematically illustrating the heat
generating body box housing refrigeration device of the sixth exemplary
embodiment of the present invention. As illustrated in FIG. 9, heat
exchanger plate 34 and heat exchanger plate 35 are provided in upper and
lower surfaces of partition plate 9 so as to be parallel to the air flow
(lowtemperature air 6) generated by outdoor blower 4 in FIG. 1. For
example, heat exchanger plate 34 and heat exchanger plate 35 are formed
into an L-shape, and heat exchanger plate 34 and heat exchanger plate 35
are fixed by screwing surfaces that are in contact with partition plate 9.
According to the above configuration, the heat is released in heat
exchanger plate 34 provided on the upper side of partition plate 9, and the
heat is absorbed from high-temperature air 5 that already passes through
second evaporator 17 in heat exchanger plate 35 provided on the lower side of
partition plate 9, and heat exchange is performed by a heat sink effect.
Therefore, the heat exchange capability is enhanced in the heat generating
body box housing refrigeration device of the sixth exemplary embodiment of
the present invention.
SEVENTH EXEMPLARY EMBODIMENT
In a heat generating body box housing refrigeration device according
to a seventh exemplary embodiment of the present invention, the same
structural element as the first exemplary embodiment is designated by the
same reference mark, and its detailed description is omitted.
FIG. 10 is a sectional side view schematically illustrating the heat
generating body box housing refrigeration device of the seventh exemplary
embodiment of the present invention. As illustrated in FIG. 10, first
condenser 20 and second condenser 23 are fixed to each other by heat
exchanger plate 36, and first evaporator 14 and second evaporator 17 are
fixed to each other by heat exchanger plate 37. Heat exchanger plate 36 and
heat exchanger plate 37 are fixed to the condenser and the evaporator so as to
support side surfaces of vent surfaces of the condenser and the evaporator,
and heat exchanger plate 36 and heat exchanger plate 37 are fixed to
partition plate 9 by screws such that fixing portions of partition plate 9 is
bent into the L-shape.
As a result, the heat received from partition plate 9 is released in heat
exchanger plate 36, and the heat received from high-temperature air 5 is
transferred to partition plate 9 in heat exchanger plate 37. Therefore, in the
heat generating body box housing refrigeration device of the seventh
exemplary embodiment of the present invention, the heat exchange
capability is enhanced and strength is further increased.
EIGHTH EXEMPLARY EMBODIMENT
In a heat generating body box housing refrigeration device according
to an eighth exemplary embodiment of the present invention, the same
structural element as the first exemplary embodiment is designated by the
same reference mark, and its detailed description is omitted.
FIG. 11 is a front view illustrating the heat generating body box
housing refrigeration device of the eighth exemplary embodiment of the
present invention. As illustrated in FIG. 11, partition plate 9 has sawtooth
shape 38 when viewed from a direction of the air flow generated by outdoor
blower 4 in FIG. 1. That is, partition plate 9 has a pleated shape in which a
peak and a valley are made in the air-flow direction.
As a result, in the heat generating body box housing refrigeration
device of the eighth exemplary embodiment of the present invention, because
a surface area of partition plate 9 is enlarged to increase he at-re leasing and
heat-absorbing area, the heat exchange performance of partition plate 9 is
improved.
NINTH EXEMPLARY EMBODIMENT
In a heat generating body box housing refrigeration device according
to a ninth exemplary embodiment of the present invention, the same
structural element as the first exemplary embodiment is designated by the
same reference mark, and its detailed description is omitted.
FIG. 12 is a sectional side view schematically illustrating the heat
generating body box housing refrigeration device of the ninth exemplary
embodiment of the present invention. As illustrated in FIG. 12, shapes of
first refrigerant liquid pipe 26 and second refrigerant liquid pipe 27 and
shapes of first refrigerant steam pipe 24 and second refrigerant steam pipe
25 have curved portions 39 at joints of first condenser 20, second condenser
23, first evaporator 14, and second evaporator 17. That is, first joint 41,
second joint 42, third joint 43, fourth joint 44, fifth joint 45, sixth joint 46,
seventh joint 47, and eighth joint 48 have the curved shapes.
As a result, in the heat generating body box housing refrigeration
device of the ninth exemplary embodiment of the present invention, an
impact such as an earthquake is absorbed by curved portion 39 to disperse
the impact on the piping joint, so that a breakage of the piping joint and a gas
leak can be prevented.
TENTH EXEMPLARY EMBODIMENT
In the first to ninth exemplary embodiments, the rectangular surface
of the condenser and the rectangular surface of the evaporator are disposed
in the same direction. However, sometimes the condenser and the evaporator
are disposed orthogonal to each other, namely, sometimes the condenser and
the evaporator are disposed such that planes including the rectangular
surfaces of the condenser and evaporator are orthogonal to each other. In
this case, a difference in length is generated between the refrigerant liquid
pipe and the refrigerant steam pipe of the two refrigerant cycles, and
sometimes the performance of one of the refrigerant cycles is significantly
degraded.
FIG. 13A is a horizontal sectional view schematically illustrating a
condenser side of a heat generating body box housing refrigeration device
according to a tenth exemplary embodiment of the present invention, and
FIG. 13B is a sectional side view schematically illustrating the heat
generating body box housing refrigeration device.
For example, heat generating body box housing refrigeration device
101 includes the electronic component generating the heat like the
mobile-phone base station, and heat generating body box housing
refrigeration device 101 is installed above and below a top side (partition
plate 109) of closed heat generating body box housing 102. High-temperature
air 105 passes through evaporator 160 by internal air blower 103.
Low-temperature air 106 passes through condenser 150 by external air
blower 104. Main body box 110 is partitioned by partition plate 109 such that
high-temperature portion 107 to which high-temperature air 105 vents is
located in a lower portion of partition plate 109 and such that
low-temperature portion 108 to which low-temperature air 106 vents is
located in an upper portion of partition plate 109.
FIG. 14 is a perspective view illustrating a front surface of the heat
generating body box housing refrigeration device of the tenth exemplary
embodiment of the present invention, and FIG. 15 is a perspective view
illustrating a back surface of the heat generating body box housing
refrigeration device. As illustrated in FIGS. 13A, 13B, 14 and 15, condenser
150 includes first condenser 120 and second condenser 123. Evaporator 160
includes first evaporator 114 and second evaporator 117.
Rectangular first evaporator 114 is disposed in high-temperature
portion 107 in FIG. 13A, and includes first evaporator steam header 111 on
the upper side and first evaporator liquid header 112 on the lower side. First
evaporator 114 is disposed while inclined backward (or forward) with respect
to a vent direction of high-temperature air 105, refrigerant 113 (for example,
R134a) is enclosed in first evaporator 114, and refrigerant 113 receives the
heat from high-temperature air 105 and is boiled and vaporized. Similarly,
rectangular second evaporator 117 is disposed in high-temperature portion
107, and includes second evaporator steam header 115 on the upper side and
second evaporator liquid header 116 on the lower side. Second evaporator
117 is disposed above first evaporator 114 while inclined in the same
direction as first evaporator 114, refrigerant 113 (for example, R134a) is
enclosed in second evaporator 117, and refrigerant 113 receives the heat from
high-temperature air 105 and is boiled and vaporized.
Rectangular first condenser 120 is disposed in low-temperature
portion 108 in FIG. 13A, and includes first condenser steam header 118 on
the upper side and first condenser liquid header 119 on the lower side. First
condenser 120 is communicated with first evaporator 114, and first condenser
120 is disposed while inclined orthogonal to the inclination direction of first
evaporator 114. First condenser 120 condenses and devolatilizes the steam of
boiled and vaporized refrigerant 113 by releasing the heat of the steam of
refrigerant 113 to lowtemperature air 106. Similarly, rectangular second
condenser 123 is disposed in lowtemperature portion 108, and includes
second condenser steam header 121 on the upper side and second condenser
liquid header 122 on the lower side. Second condenser 123 is communicated
with second evaporator 117, and second condenser 123 is disposed above first
condenser 120 while inclined orthogonal to the inclination direction of second
evaporator 117. Second condenser 123 condenses and devolatilizes the steam
of boiled and vaporized refrigerant 113 by releasing the heat of the steam of
refrigerant 113 to lowtemperature air 106.
First refrigerant steam pipe 124 communicates between first
evaporator steam header 111 and first condenser steam header 118 while
piercing partition plate 109. First steam connecting port A 124a and first
steam connecting port B 124b are provided in one end portions of first
condenser steam header 118 and first evaporator steam header 111,
respectively.
Similarly, second refrigerant steam pipe 125 communicates between
second evaporator steam header 115 and second condenser steam header 121
while piercing partition plate 109. In second evaporator steam header 115,
second steam connecting port B 125b is provided in an end portion on the
opposite side to first steam connecting port B 124b. In second condenser
steam header 121, second steam connecting port A 125a is provided in an end
portion on the opposite side to first steam connecting port A 124a. Second
refrigerant steam pipe 125 connects second steam connecting port A 125a and
second steam connecting port B 125b. Further, first refrigerant steam pipe
124 and second refrigerant steam pipe 125 are configured to have the
substantially same length.
First refrigerant liquid pipe 126 communicates between first
evaporator liquid header 112 and first condenser liquid header 119 while
piercing partition plate 109. First liquid connecting port A 126a and first
liquid connecting port B 126b are provided in end portions of first evaporator
liquid header 112 and first condenser liquid header 119, respectively.
Similarly, second refrigerant liquid pipe 127 communicates between
second evaporator liquid header 116 and second condenser liquid header 122
while piercing partition plate 109. In second evaporator liquid header 116,
second liquid connecting port A 127a is provided in an end portion on the
opposite side to first liquid connecting port A 126a. In second condenser
liquid header 122, second liquid connecting port B 127b is provided in an end
portion on the opposite side to first liquid connecting port B 126b. Second
refrigerant liquid pipe 127 connects second liquid connecting port A 127a and
second liquid connecting port B 127b. Further, first refrigerant liquid pipe
126 and second refrigerant liquid pipe 127 are configured to have the
substantially same length.
As illustrated in FIG. 13B, heat generating body box housing
refrigeration device 101 includes first refrigerant cycle 128 that is
constructed by first evaporator 114 and first condenser 120 and second
refrigerant cycle 129 that is constructed by second evaporator 117 and second
condenser 123.
According to the configuration, the lengths of first refrigerant liquid
pipe 126 and second refrigerant liquid pipe 127 are substantially equalized,
and the lengths of first refrigerant steam pipe 124 and second refrigerant
steam pipe 125 are substantially equalized. Therefore, the capability is not
significantly degraded in one of the refrigerant cycles, but the capability of
heat generating body box housing refrigeration device 101 is enhanced as a
whole. Additionally, production efficiency is improved because first
refrigerant cycle 128 and second refrigerant cycle 129 have the same
refrigerant amount.
As illustrated in FIGS. 13A and 13B, in main body box 110, external
air communication ports 151a and 151b are provided in two side surfaces
that are disposed opposite each other in parallel to the vent direction of
condenser 150. Remaining surfaces of main body box 110 are closed.
External air blower 104 is provided so as to blow the air toward a vent
surface of condenser 150. External air blower 104 is provided in front of or at
the back of the vent surface of condenser 150, which enables external air
blower 104 to blow the air to condenser 150. Internal air blower 103 is
provided in heat generating body box housing 102.
A running operation of heat generating body box housing
refrigeration device 101 will be described below.
The heat generated from a heat generating body in heat generating
body box housing 102 heats up the air (hereinafter referred to as internal air)
in heat generating body box housing 102. The high-temperature internal air
circulates in heat generating body box housing 102 by running of internal air
blower 103, and passes through evaporator 160. On the other hand,
lowtemperature external air passes through condenser 150 by the running of
external air blower 104. As described above, the refrigerant in a gas state in
condenser 150 is refrigerated by the external air ventilation, and condensed
(devolatilized). The devolatilized refrigerant flows to the lower side of
condenser 150, and flows into evaporator 160 through first refrigerant liquid
pipe 126 and second refrigerant liquid pipe 127. The refrigerant in a liquid
state in evaporator 160 is heated up by the internal air ventilation and
vaporized. At this point, the refrigerant deprives the internal air of the heat
to refrigerate the internal air. The vaporized refrigerant flows into condenser
150 through first refrigerant steam pipe 124 and second refrigerant steam
pipe 125 again.
At this point, in main body box 110, external air communication ports
151a and 151b are provided in not the front surface of the vent surface of
condenser 150, but the side surface parallel to the vent direction. That is, the
air that passes in main body box 110 by the external air natural wind does
not pass through a vent passage of condenser 150, but flows so as to come into
contact with the surface of condenser 150. Accordingly, while external air
blower 104 is stopped, the heat exchange is not performed too much in
condenser 150, and the refrigeration is not excessively performed in heat
generating body box housing refrigeration device 101. As described above, in
the case of the relatively low temperature in heat generating body box
housing 102, the refrigeration capability of heat generating body box housing
refrigeration device 101 is controlled by stopping external air blower 104.
Therefore, the excessive refrigeration of heat generating body box housing
102 can be prevented.
FIG. 16 is an explanatory view illustrating a liquid pipe partition hole
piercing position portion in the heat generating body box housing
refrigeration device of the tenth exemplary embodiment of the present
invention. As illustrated in FIG. 16, partition plate through-hole 130 for first
refrigerant liquid pipe 126 may be made in a region on the opposite side to
upper side portion 132 with respect to lower side portion 131.
FIG. 17 is an explanatory view illustrating a position of a steam pipe
partition hole piercing portion in the heat generating body box housing
refrigeration device of the tenth exemplary embodiment of the present
invention. As illustrated in FIG. 17, partition plate through-hole 133 for first
refrigerant steam pipe 124 may be made in a region on the same side as
upper side portion 132 with respect to lower side portion 131. According to
the configuration, the number of bending times can decrease in first
refrigerant liquid pipe 126 and first refrigerant steam pipe 124, and an
upward gradient can easily be ensured because first refrigerant liquid pipe
126 and first refrigerant steam pipe 124 do not pass through a narrow space
between partition plate 109 and condenser 150. As a result, because the
refrigerant smoothly flows, the capability of heat generating body box
housing refrigeration device 101 is enhanced as a whole.
FIG. 18 is an explanatory view illustrating a gradient of the
refrigerant liquid pipe in the heat generating body box housing refrigeration
device of the tenth exemplary embodiment of the present invention. As
illustrated in FIG. 18, piping gradients of first refrigerant liquid pipe 126 and
second refrigerant liquid pipe 127 may be set such that a downstream side of
a refrigerant passage becomes a lower direction.
FIG. 19 is an explanatory view illustrating a gradient of the
refrigerant steam pipe in the heat generating body box housing refrigeration
device of the tenth exemplary embodiment of the present invention. As
illustrated in FIG. 19, the piping gradients of first refrigerant steam pipe 124
and second refrigerant steam pipe 125 may be set such that the downstream
side of the refrigerant passage becomes an upper direction.
INDUSTRIAL APPLICABILITY
The heat generating body box housing refrigeration device of the
present invention can efficiently exert the heat exchange capability with a
simple configuration and flexibly meet the demand for various heat exchange
treatment capabilities, and the heat generating body box housing
refrigeration device also has the strength against the impact such as the
earthquake. Therefore, the heat generating body box housing refrigeration
device is suitably used as the refrigeration device of the mobile-phone base
station.
REFERENCE MARKS IN THE DRAWINGS
1.101 Heat generating body box housing refrigeration device
2.102 Heat generating body box housing
3 Indoor blower
4 Outdoor blower
5.105 High-temperature air
6.106 Low-temperature air
7.107 High-temperature portion
8.108 Low-temperature portion
9.109 Partition plate
10.110 Main body box
11.111 First evaporator steam header
12.112 First evaporator liquid header
13.113 Refrigerant
14.114 First evaporator
15.115 Second evaporator steam header
16.116 Second evaporator liquid header
17.117 Second evaporator
18.118 First condenser steam header
19.119 First condenser liquid header
20.120 First condenser
21.121 Second condenser steam header
22.122 Second condenser liquid header
23.123 Second condenser
24.124 First refrigerant steam pipe
25.125 Second refrigerant steam pipe
26.126 First refrigerant liquid pipe
27.127 Second refrigerant liquid pipe
28.128 First refrigerant cycle
29.129 Second refrigerant cycle
30 Third refrigerant cycle
31,32 Guide plate
33 Sealing component
34,35,36,37 Heat exchanger plate
38 Sawtooth shape
39 Curved portion
41 First joint
42 Second joint
43 Third joint
44 Fourth joint
45 Fifth joint
46 Sixth joint
47 Seventh joint
48 Eighth joint
103 Internal air blower
104 External air blower
124a First steam connecting port A
124b First steam connecting port B
125a Second steam connecting port A
125b Second steam connecting port B
126a First liquid connecting port A
126b First liquid connecting port B
127a Second liquid connecting port A
127b Second liquid connecting port B
130,133 Partition plate through-hole
131 Lower side portion
132 Upper side portion
150 Condenser
160 Evaporator
We Claim:
1. A heat generating body box housing refrigeration device that
refrigerates a heat generating body box housing accommodating a heat
generating body, comprising:
a first condenser and a second condenser that condense a refrigerant;
a first evaporator and a second evaporator that vaporize the
refrigerant; and
an outdoor blower that sucks air outside of the heat generating body
box housing and blows the air to promote heat transfers of the first condenser
and the second condenser, wherein
the first condenser and the first evaporator are connected with a first
refrigerant liquid pipe and a first refrigerant steam pipe to constitute a first
refrigerant cycle,
the second condenser and the second evaporator are connected with a
second refrigerant liquid pipe and a second refrigerant steam pipe to
constitute a second refrigerant cycle,
the first condenser of a rectangular shape includes a first condenser
steam header on an upper side and a first condenser liquid header on a lower
side,
the first evaporator of a rectangular shape includes a first evaporator
steam header on an upper side and a first evaporator liquid header on a lower
side,
the second condenser of a rectangular shape includes a second
condenser steam header on an upper side and a second condenser liquid
header on a lower side,
the second evaporator of a rectangular shape includes a second
evaporator steam header on an upper side and a second evaporator liquid
header on a lower side,
the first condenser, the second condenser, the first evaporator, and
the second evaporator are vertically disposed with distances between one
another,
the first refrigerant liquid pipe is connected between a first joint in
one end portion of the first condenser liquid header and a second joint in one
end portion of the first evaporator liquid header,
the first refrigerant steam pipe is connected between a third joint of
the first condenser steam header and a fourth joint of the first evaporator
steam header, the third joint located diagonally with respect to the first joint
in the first condenser, and the fourth joint located diagonally with respect to
the second joint in the first evaporator,
the second refrigerant liquid pipe is connected between a fifth joint of
the second condenser liquid header and a sixth joint of the second evaporator
liquid header, the fifth joint located in a position facing another end portion
different from that of the first joint, and the sixth joint located in a position
facing another end portion different from that of the second joint, and
the second refrigerant steam pipe is connected between a seventh
joint of the second condenser liquid header and an eighth joint of the second
evaporator liquid header, the seventh joint located in a position facing
another end portion different from that of the third joint, and the eighth joint
located in a position facing another end portion different from that of the
fourth joint.
2. The heat generating body box housing refrigeration device
according to claim 1, wherein
the first condenser and the second condenser are inclined in an
identical direction, and the first evaporator and the second evaporator are
inclined in an identical direction.
3. The heat generating body box housing refrigeration device
according to claim 2, wherein
in the first condenser and the second condenser, a distance between
the first condenser liquid header and the second condenser liquid header is
greater than a distance between the first condenser steam header and the
second condenser steam header.
4. The heat generating body box housing refrigeration device
according to claim 1 further comprising a guide plate provided in parallel to a
direction of air flow produced by the outdoor blower in a manner to extend to
the windward side from any of the first condenser liquid header and the
second condenser liquid header for guiding the air flow.
5. The heat generating body box housing refrigeration device
according to claim 1 further comprising:
a partition plate provided between the first condenser and the second
condenser and the first evaporator and the second evaporator, the first
condenser and the second condenser are disposed above the partition plate;
and
a sealing component having an inclination provided between the
partition plate and one of the first condenser and the second condenser
located closer to the partition plate.
6. The heat generating body box housing refrigeration device
according to claim 5 further comprising a heat exchanger plate provided on
each of upper and lower surfaces of the partition plate in an orientation
parallel to an air flow produced by the outdoor blower.
7. The heat generating body box housing refrigeration device
according to claim 6, wherein
the first condenser, the second condenser, the first evaporator and the
second evaporator are fixed to the heat exchanger plate.
8. The heat generating body box housing refrigeration device
according to claim 5, wherein
the partition plate is formed into a sawtooth shape when viewed
from a direction of an air flow generated by the outdoor blower.
9. The heat generating body box housing refrigeration device
according to claim 1, wherein
the first joint, the second joint, the third joint, the fourth joint, the
fifth joint, the sixth joint, the seventh joint and the eighth joint have a curved
shape.
10. The heat generating body box housing refrigeration device
according to claim 1 further comprising a third refrigerant cycle.
11. A heat generating body box housing refrigeration device
comprising:
a first condenser and a second condenser that condense a refrigerant;
a first evaporator and a second evaporator that vaporize the
refrigerant;
an indoor blower that blows air in a heat generating body box housing
to promote heat transfer of the first evaporator and the second evaporator;
and
an outdoor blower that sucks air outside of the heat generating body
box housing and blows the air to promote heat transfer of the first condenser
and the second condenser, wherein
the first condenser and the first evaporator are connected with a first
refrigerant liquid pipe and a first refrigerant steam pipe to constitute a first
refrigerant cycle,
the second condenser and the second evaporator are connected with a
second refrigerant liquid pipe and a second refrigerant steam pipe to
constitute a second refrigerant cycle,
the first condenser of a rectangular shape includes a first condenser
steam header on an upper side and a first condenser liquid header on a lower
side,
the first evaporator of a rectangular shape includes a first evaporator
steam header on an upper side and a first evaporator liquid header on a lower
side,
the second condenser of a rectangular shape includes a second
condenser steam header on an upper side and a second condenser liquid
header on a lower side,
the second evaporator of a rectangular shape includes a second
evaporator steam header on an upper side and a second evaporator liquid
header on a lower side the first condenser,
the first condenser liquid header and the second condenser liquid
header and the first evaporator liquid header and the second evaporator
liquid header are vertically disposed with distances provided from one
another,
a vertical plane including the first condenser liquid header is
orthogonal to a vertical plane including the first evaporator liquid header,
the first refrigerant liquid pipe is connected to one end portion of the
first condenser liquid header and one end portion of the first evaporator
liquid header,
the second refrigerant liquid pipe is connected to an end portion of the
second condenser liquid header opposite to another end portion facing the one
end portion of the first condenser liquid header,
the first refrigerant steam pipe is connected to one end portion of the
first condenser steam header and one end portion of the first evaporator
liquid header, and
the second refrigerant steam pipe is connected to an end portion of
the second condenser steam header opposite to another end portion facing the
one end portion of the first condenser liquid header.

ABSTRACT

A heat generating body box housing refrigeration device includes a
first refrigerant cycle in which a first condenser and a first evaporator are
connected by a first refrigerant liquid pipe and a first refrigerant steam pipe
and a second refrigerant cycle in which a second condenser and a second
evaporator are connected by a second refrigerant liquid pipe and a second
refrigerant steam pipe. The first refrigerant liquid pipe is connected between
a first joint and a second joint, the first refrigerant steam pipe is connected
between a third joint and a fourth joint, the second refrigerant liquid pipe is
connected between a fifth joint and a sixth joint, and the second refrigerant
steam pipe is connected between a seventh joint and an eighth joint.