JP2005210088A - Cooling device in closed cabinet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling device in a closed cabinet whose total physical size can be reduced and whose operation cost can be kept at a low level. <P>SOLUTION: The cooling device that refrigerates inside a closed cabinet 1 is equipped with the closed cabinet 1, a heat exchanger 2 that exchanges heat between air in the cabinet 1 and air outside the cabinet 1 having an air duct 17 inside the cabinet 1 and an air duct outside the cabinet which are mutually independent, a solar power generation panel 3 arranged outside the cabinet 1, and a cooling means 4 that refrigerates the inside of the cabinet 1 using electric power obtained from the solar power generation panel. The cooling means 4 is arranged to extend over the inside and the outside of the cabinet 1. It is equipped with a cooling liquid circulation pipe 30 that circulates cooling liquid inside and outside the cabinet 1, and pump 31 that circulates cooling liquid inside the cooling liquid circulation pipe 30. The pump 31 is driven by electric power obtained from the solar generation panel 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a device that cools the inside of a sealed housing, and more particularly, to a device that cools the inside of a sealed housing in which a wireless relay device of a mobile wireless telephone such as a mobile phone or a car phone is installed.

  For example, in the case of a wireless relay device for a mobile radio telephone such as a mobile phone or a car phone, a large number of heat generating electronic components are arranged in a hermetically sealed casing. Therefore, it is necessary to cool these heat generating electronic components. However, if moisture, dust, dust, etc. adhere to such heat-generating electronic components, its performance may be degraded or damaged, so air outside the case is taken into the sealed case to cool the inside. I can't do it.

  In view of this, various types of sealed casing cooling devices have been proposed that include a sealed casing and a heat exchange device that exchanges heat between the air inside the casing and the air outside the casing.

  For example, a sealed housing, a casing integrally provided in the sealed housing, and a fluid separator that separates the inside of the casing into a high temperature side heat transfer space as an air passage inside the housing and a low temperature side heat transfer space as an air passage outside the housing Boiling cooling device that lowers the air temperature in the sealed casing to the upper limit temperature or less by moving the heat in the high temperature side heat transfer space to the low temperature side heat transfer space, the air flow of the low temperature outside the case in the low temperature side heat transfer space Two upper fans to be generated, two lower fans to generate an air flow of high-temperature housing air in the high-temperature side heat transfer space, and a controller that controls energization of the upper and lower fans. Is known (see Patent Document 1).

By the way, in order to improve the cooling performance of the cooling device described in Patent Document 1, it is necessary to increase the size of the housing, increase the size of the boiling cooling device, or increase the capacity of the blower. However, in the case of the wireless relay device as described above, the installation space is limited, and there is a limit to increasing the size of the housing and the boiling cooling device. Moreover, since the power consumption increases when the capacity of the blower is increased, the operation cost increases.
JP-A-10-227554

  An object of the present invention is to provide a hermetically sealed in-chamber cooling device that can solve the above-described problems, reduce the overall size, and reduce the operating cost.

  1) A device that cools the inside of a sealed housing, has a sealed housing, and an air passage inside the housing and an air passage outside the housing, and exchanges heat between the air inside the housing and the air outside the housing. A sealed in-case cooling device comprising: a heat exchanging device, a solar power generation panel arranged outside the case, and a cooling means for cooling the inside of the case using electric power obtained by the solar power generation panel.

  2) The heat exchange device includes a casing, a heat exchanger disposed in the casing, an air blower in the casing that takes air in the casing into the casing, passes the heat exchanger, and returns the casing to the casing, An outside air blower that takes outside air into the casing and passes it through the heat exchanger and returns it outside the housing, and the casing has an air inlet and air outlet inside the housing that communicates with the inside of the housing, and a housing. An external air inlet and an external air outlet that communicate with the outside of the body are formed, and the heat exchanger communicates with the internal air passage that communicates with the internal air inlet and the internal air outlet, and the external air inlet and the external air outlet. The sealed in-chamber cooling device according to 1), further including an air passage outside the housing and an air passage outside the housing, wherein inner fins are arranged in the air passage inside the housing and the air passage outside the housing, respectively.

  3) The inside air passage and the outside air passage of the heat exchanger extend in the vertical direction, and the inside air inlet and the outside air outlet are formed at the upper part of the casing, respectively. The airtight casing cooling device according to 2) above, wherein the inlets are respectively formed in the lower part of the casing.

  4) The heat exchanger is adjacent to a plurality of vertical rectangular flat plates arranged in parallel at intervals, and a lower closing member for closing every other lower end opening of the gap between adjacent flat plates. An upper closing member for closing the upper end opening of the gap between the flat plates where the lower end opening is not closed, and an opening to the inside of the housing in the gap between the adjacent flat plates where the lower end opening is closed, A first inner closing member that closes except for a portion, a first outer closing member that closes the entire opening to the outside of the housing in a gap in which a lower end opening is closed among gaps between adjacent flat plates, and between adjacent flat plates In the gap between the adjacent flat plates, the second outer closing member that closes the opening to the outside of the housing in the gap in which the upper end opening is closed, and the gap between the adjacent flat plates in the gap in which the upper end opening is closed. Close the entire opening to the inside of the housing An inner closing member and an inner fin disposed in a gap between adjacent flat plates, and an air passage in the housing by the two adjacent flat plates, the lower closing member, the first inner closing member, and the first outer closing member. 2) or 3), wherein the outside air passage is formed by two adjacent flat plates, an upper closing member, a second outer closing member, and a second inner closing member.

  5) A heat exchanger alternately integrates a plurality of vertical rectangular flat plate portions arranged in parallel at intervals, and the case inner edges and case outer edges of adjacent plate portions. And a meander plate having a first gap opened inside the casing and a second gap opened outside the casing, the casing inner side of the meander plate and the casing outer side. Both inner and outer closing plates covering the surfaces facing each other, a lower closing member for closing the lower end opening of the first gap of the meandering plate, an upper closing member for closing the upper end opening of the second gap of the meandering plate, and the serpentine plate Inner fins arranged in the first and second gaps are provided, an opening is formed at the lower end portion of the inner closing plate corresponding to the first gap of the meandering plate, and the second gap of the meandering plate in the outer closing plate And an opening is formed at the upper end of the portion corresponding to the first portion of the meandering plate. An air passage in the housing is formed by two adjacent flat plate portions that form a gap, a connecting plate portion that integrally connects the outer side edge portions of the two flat plate portions, an inner closing plate, and a lower closing member. An air passage outside the housing is formed by two adjacent flat plate portions that form the second gap, a connecting plate portion that integrally connects the case inner edges of the two flat plate portions, an outer closing plate, and an upper closing member. The sealed internal cooling device according to 2) or 3) above.

  6) A cooling fluid circulation pipe in which the cooling means is arranged so as to straddle the inside and outside of the casing and the cooling fluid is circulated inside and outside of the casing, and a pump which is arranged outside the casing and circulates the cooling fluid in the cooling fluid circulation pipe The cooling fluid circulation pipe is provided with a heat receiving portion in a portion existing in the housing and a heat radiating portion is provided in a portion existing outside the housing, and the pump is driven by electric power obtained from the photovoltaic power generation panel. The airtight casing cooling device according to any one of 1) to 5), which is driven.

  7) The closed casing cooling device according to 6) above, wherein the heat receiving part of the cooling fluid circulation pipe is arranged near the inlet of the casing internal air passage in the heat exchange apparatus.

  8) The cooling device in the sealed casing according to 6) or 7) above, wherein heat receiving fins are provided around the heat receiving part of the cooling fluid circulation pipe, and heat radiating fins are also attached around the heat radiating part.

  9) The cooling device in the hermetically sealed casing according to 8), wherein a blower for sending wind to the heat dissipating fins of the cooling fluid circulation pipe is disposed outside the casing, and the blower is driven by electric power obtained from the photovoltaic power generation panel.

  10) The cooling means includes a plurality of heat pipes arranged so as to straddle the inside and outside of the casing, and a blower that sends air to a portion of the heat pipe that exists outside the casing, and exists in the casing of the heat pipe. In any one of the above 1) to 5), the evaporation unit is provided in the part to be provided and the condensing part is provided in the part existing outside the housing, and the blower is driven by the electric power obtained by the photovoltaic power generation panel. The cooling device in a sealed casing as described.

  11) The hermetically sealed internal casing cooling device according to 10) above, wherein an evaporation portion of the heat pipe is disposed in the vicinity of the inlet of the internal air passage in the heat exchange apparatus.

  12) A heat receiving fin is provided around the evaporation part of the heat pipe, and a heat radiating fin is also attached around the condensing part, and air is sent to the heat radiating fin by a blower, as described in 10) or 11) above. Body cooling device.

  13) The airtight casing cooling device according to any one of 1) to 12) above, wherein a white coating film is formed on the entire outer surface of the casing.

  14) The cooling device in a sealed casing according to any one of 1) to 13) above, wherein a heat generating electronic component is disposed in the sealed casing.

  15) A radio relay device for a mobile radio telephone in which the sealed casing of the cooling apparatus in the sealed casing described in any one of 1) to 13) above is used as a housing.

  According to the airtight casing cooling device of 1) above, the inside of the casing is cooled using the solar power generation panel arranged outside the casing and the electric power obtained by the solar power generation panel in addition to the heat exchange device. Since the cooling means is provided, the cooling efficiency in the housing can be improved without increasing the size of the housing and the heat exchange device. Therefore, it is possible to reduce the overall size. Moreover, since the cooling means cools the inside of the housing using the electric power obtained by the photovoltaic power generation panel, the operating cost is reduced. Note that the power generation efficiency of the photovoltaic power generation panel decreases at night and in winter, but the temperature outside the case also decreases at night and in winter, so the temperature inside the case also decreases, and only the heat exchange device can It can be cooled sufficiently.

  According to the airtight case cooling device 2), the configuration of the heat exchange device is relatively simple.

  According to the airtight housing cooling device of 3) above, the air in the housing flows downward in the air passage in the housing and the air outside the housing flows upward in the air passage outside the housing, so that both flow in opposite directions, and in the heat exchanger Heat exchange efficiency is improved.

  According to the sealed case cooling devices 4) and 5) above, the configuration of the heat exchanger of the heat exchange device becomes relatively simple.

  According to the airtight casing cooling device of 6) above, the pump is driven by the electric power obtained by the photovoltaic power generation panel, and the cooling fluid is circulated in the cooling fluid circulation pipe by the pump, thereby cooling the inside of the casing. it can.

  According to the hermetically sealed cooling device in 7) above, the air in the housing cooled by the cooling fluid circulating in the cooling fluid circulation pipe flows into the air passage in the housing of the heat exchange device, and is further cooled in the heat exchange device. Therefore, the cooling efficiency in the housing is improved.

  According to the airtight casing cooling device of 8), the cooling efficiency of the air in the casing by the cooling fluid circulation pipe is further improved.

  According to the airtight casing cooling device of the above 9), the cooling efficiency of the air in the casing by the cooling fluid circulation pipe is further improved.

  According to the airtight case cooling device of 10) above, the working fluid receives heat in the case air and evaporates in the evaporation part of the heat pipe and flows to the condensation part, where it dissipates heat to the air sent by the blower. Condensates and returns to the evaporation section. By repeating such a cycle, the inside of the housing is cooled.

  According to the airtight casing cooling device of 11) above, the air in the casing cooled by the heat pipe flows into the air passage in the casing of the heat exchange device and is further cooled in the heat exchange device. Cooling efficiency is improved.

  According to the above-mentioned sealed casing cooling device 12), the cooling efficiency of the casing air by the heat pipe is further improved.

  According to the airtight casing cooling device of 13) above, the absorption of sunlight into the casing is suppressed, so that the temperature rise in the casing air is suppressed. As a result, the cooling of the casing by the heat exchange device and the cooling means is performed. Efficiency is improved.

  Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the cooling device according to the present invention is applied to a wireless relay device of a mobile phone. Throughout the drawings, the same parts and the same parts are denoted by the same reference numerals, and redundant description is omitted.

  In the following description, the term “aluminum” includes aluminum alloys in addition to pure aluminum. Further, the left side of FIGS. 1 and 4 is referred to as the front, the right side is referred to as the rear, and the upper and lower sides are referred to as the upper and lower sides. Further, the front side of the paper surface of FIGS. 1 and 4 (left side of FIGS. 2, 3, 5 and 6) is the left side, and the opposite side is the rear side.

Embodiment 1
This embodiment is shown in FIGS.

  FIG. 1 shows the overall configuration of a hermetically sealed casing cooling device, and FIGS. 2 and 3 show the configuration of the main part thereof.

  In FIG. 1, a cooling device in a sealed housing includes a sealed housing (1) in which a mobile phone wireless relay device (not shown) is housed, and a housing (1) provided in the housing (1). A heat exchange device (2) for exchanging heat between the air inside and the air outside the housing (1), a solar power generation panel (3) disposed on the housing (1), and a solar power generation panel (3 And a cooling means (4) for cooling the inside of the housing (1) using the electric power obtained in (1). The entire outer surface of the housing (1) is covered with a white coating film (not shown).

  The heat exchange device (2) includes a casing (5) attached to the inner surface of the front wall (1a) of the casing (1), a heat exchanger (6) disposed in the casing (5), and a casing ( 1) The air inside the casing (5) is taken into the casing (5), passed through the heat exchanger (6), and then returned to the casing (1), and the air outside the casing (1) And an outside air blower (8) that returns the outside to the outside of the housing (1) after being taken into the casing (5) and passed through the heat exchanger (6).

  An air inlet (9) in the housing that leads into the housing (1) is formed at the upper end of the rear wall (5a) of the casing (5), and a housing that leads into the housing (1) at the bottom of the rear wall (5a). A body air outlet (10) is formed. Further, the casing (5) has a front wall (5b) in a lower part than the air outlet (10) in the housing through an opening (12) formed in the front wall (1a) of the housing (1). The outside air inlet (13) that leads to the outside of the body (1) is formed, and the front wall (1a) of the housing (1) is formed on the front wall (5b) below the inside air inlet (9). A housing outside air outlet (15) communicating with the outside of the housing (1) through the formed opening (14) is formed. A hood (16) for guiding the air in the housing (1) to the air inlet (9) in the housing is attached to the rear wall (5a) of the casing (5) so as to protrude rearward.

  The heat exchanger (6) is provided at a height between the air inlet (9) in the housing and the air inlet (13) outside the housing, and the air inlet (9) in the housing and the air outlet (10) in the housing. Multiple internal air passages (17) that communicate with the external air passage (17) and multiple external air passages (18) that communicate with the external air inlet (13) and the external air outlet (15) and are independent of the internal air passage (17) (Refer to FIG. 2 and FIG. 3).

  As shown in FIGS. 2 and 3, the heat exchanger (6) includes a plurality of aluminum vertical rectangular flat plates (20) arranged in parallel in the left-right direction and adjacent flat plates (20). An aluminum lower closing member (21) that closes every other lower end opening of all gaps between them, and an upper end opening of a gap that is not closed among all the gaps between adjacent flat plates (20) The opening to the rear side (inside the casing) in the gap where the lower end opening is closed among all the gaps between the aluminum upper closing member (22) and the adjacent flat plate (20), except for the lower end To the front side (outside of the housing) in the gap where the lower end opening is closed among all the gaps between the aluminum first rear closing member (23) (first inner closing member) and the adjacent flat plate (20) to be closed Aluminum first front closure member (24) (first outer closure member) that closes the entire opening The second front closing member 25 made of aluminum (second outer closing) that closes the opening to the front side except the upper end portion in the gap where the upper end opening is closed among all the gaps between the adjacent flat plates 20 Member) and an aluminum second rear closing member (26) (second inner closing) that closes the entire rear opening in the gap in which the upper end opening is closed among all the gaps between the adjacent flat plates (20) Member) and aluminum inner fins (27) disposed in all the gaps between the adjacent flat plates (20).

  The flat plate (20) is made of an aluminum brazing sheet having a brazing filler metal layer on both sides. The lower closing member (21), the upper closing member (22), the first and second rear closing members (23) (26), the first The second front closing members (24) and (25) and the inner fin (27) are disposed between two adjacent flat plates (20) and brazed to the flat plate (20).

  The two adjacent flat plates (20), the lower closing member (21), the first rear closing member (23), and the first front closing member (24) form an in-chassis air passage (17). An outside air passage (18) is formed by the two flat plates (20), the upper closing member (22), the second front closing member (25), and the second rear closing member (26).

  The upper end of the air passage (17) in the housing is open, and the opening (17a) communicates with the air inlet (9) in the housing of the casing (5). Further, the air passage (17) in the housing opens rearward at a portion below the lower end of the first rear closing member (23), and this opening (17b) is the air outlet (internal housing) of the casing (5). 10). The lower end of the outside air passage (18) is open, and this opening (18a) communicates with the outside air inlet (13) of the casing (5). The outside air passage (18) opens forward in a portion above the upper end of the second front closing member (25), and this opening (18b) is the outside air outlet (15) of the casing (5). ).

  The inner fin (27) has a corrugated shape, and is arranged such that the wave head and the wave bottom extend in the vertical direction. The inner fin (27) of the air passage (17) in the housing is disposed in a portion above the opening (17b), and the inner fin (27) of the air passage (18) in the housing is a portion below the opening (18b). Is arranged.

  As shown in FIG. 1, the cooling means (4) is disposed so as to pass through the top wall (1b) and straddle the inside and outside of the casing (1) and circulate the cooling fluid inside and outside the casing (1). A cooling fluid circulation pipe (30) made of aluminum or copper, and a pump (31) arranged outside the housing (1) and circulating the cooling fluid inside the cooling fluid circulation pipe (30). 31) is driven by the electric power obtained by the photovoltaic power generation panel (3).

  A serpentine heat receiving portion (30a) is provided in a portion of the cooling fluid circulation pipe (30) existing in the housing (1), and a serpentine heat dissipation portion (30b) is provided in a portion existing outside the housing (1). A plurality of plate-shaped aluminum heat-receiving fins (32) that are horizontal to the heat-receiving portion (30a) and a plurality of plate-shaped aluminum heat-radiating fins (33) that are perpendicular to the heat-dissipating portion (30b) are attached. When the cooling fluid circulation pipe (30) is made of aluminum, a cooling fluid that does not cause corrosion such as antifreeze is used. The heat receiving portion (30a) faces the hood (16) attached to the casing (5). A blower (34) is disposed above the heat radiating section (30b), and wind is sent to the heat radiating fins (33) by the blower (34). The blower (34) is also driven by the electric power obtained by the solar power generation panel (3).

  A plurality of air blowers (7) in the housing are arranged side by side in the left-right direction above the heat exchanger (6) in the casing (5) and in the vicinity of the air inlet (9) in the housing. A plurality of outside case air blowers (8) are arranged side by side in the left-right direction below the heat exchanger (6) in the casing (5) and in the vicinity of the outside air inlet (13).

  In the airtight case cooling device having such a configuration, when the temperature in the case (1) becomes higher than the upper limit temperature in the daytime, the air blower in the case (7) and the air blower outside the case (8) are driven. The Hot air in the housing (1) is guided to the hood (16) and enters the casing (5) through the air inlet (9) in the housing, and passes through the air passage (17) in the housing of the heat exchanger (6). It passes through and returns from the air outlet (10) in the housing to the housing (1). On the other hand, the low-temperature air outside the housing (1) enters the casing (5) from the opening (12) and the air inlet (13) outside the housing, and passes through the air passage (18) outside the housing of the heat exchanger (6). Then, the air is discharged out of the housing (1) through the outside air outlet (15) and the opening (14). In the heat exchanger (6), the air inside the housing and the air outside the housing exchange heat, and the air inside the housing is cooled. At this time, since the air inside the housing flows downward through the air passage (17) inside the housing and the air outside the housing flows upward through the air passage outside the housing (18), they become counterflows, improving the heat exchange efficiency. At the same time, the pump (31) and the blower (34) are also driven using the electric power obtained by the photovoltaic power generation panel (3), and the cooling fluid is circulated in the cooling fluid circulation pipe (30) and also dissipates heat. Wind is sent to the fin (33). Before entering the casing (5), the air in the housing passes between the heat receiving fins (32) of the heat receiving portion (30a) of the cooling fluid circulation pipe (30) and flows through the cooling fluid circulation pipe (30). The heat is taken away and it is cooled. Therefore, the air in the housing is cooled by the cooling means (4) before being cooled by the heat exchange device (2), and the cooling efficiency of the air in the housing is improved. The cooling fluid deprived of heat from the air in the casing reaches the heat radiating section (30b) and radiates heat to the wind sent to the heat radiating fins (33) by the blower (34). Thus, the inside of the housing (1) is cooled.

  The power generation efficiency of the photovoltaic panel (3) decreases at night and in winter, but the temperature outside the case (1) also decreases at night and winter, so the temperature inside the case (1) also decreases, The housing (1) can be sufficiently cooled only by the heat exchange device (2).

Embodiment 2
This embodiment is shown in FIG.

  In the case of this embodiment, the cooling means (40) includes a plurality of vertical heat pipes (41) arranged so as to pass through the top wall (1b) and straddle the inside and outside of the housing (1), and heat pipes ( 41) and a blower (42) arranged on the rear side of the part existing outside the casing (1), and the blower (42) is driven by the electric power obtained by the photovoltaic power generation panel (3). It has come to be. In addition, a blower (43) is also arranged on the rear side of the portion of the heat pipe (41) that is present in the housing (1), and this blower (43) is also provided with electric power obtained by the photovoltaic power generation panel (3). It is driven by.

  In the heat pipe (41), a portion existing in the housing (1) is an evaporation portion (41a), and a portion existing outside the housing (1) is a condensing portion (41b). A plate-shaped aluminum heat receiving fin (44) horizontal to the evaporation section (41a) of the heat pipe (41) and a plate-shaped aluminum heat radiating fin (45) horizontal to the condensing section (41b) each have a plurality of heat pipes. It is mounted across (41). The blower (42) outside the housing (1) sends wind to the heat radiating fins (45), and the blower (43) inside the housing (1) sends wind to the heat receiving fins (44).

  Other configurations are the same as those of the cooling device in the sealed casing (1) of the first embodiment.

  In the airtight case cooling device having such a configuration, when the temperature in the case (1) becomes higher than the upper limit temperature in the daytime, the air blower in the case (7) and the air blower outside the case (8) are driven. The Heat exchange between the high-temperature air inside the casing (1) and the low-temperature air outside the casing (1) is performed in the same manner as in the first embodiment.

  Simultaneously with the driving of the air blower (7) inside the housing and the air blower (8) outside the housing, the two blowers (42) and (43) are also driven using the power obtained by the photovoltaic power generation panel (3), and the radiating fins Wind is sent to (45) and the heat receiving fin (44). The air in the housing passes between the heat receiving fins (44) of the evaporation part (41a) of the heat pipe (41) before entering the casing (5), and the working fluid in the heat pipe (41) evaporates. Deprived of heat and cooled. Therefore, the air in the housing is cooled by the cooling means (40) before being cooled by the heat exchange device (2), and the cooling efficiency of the air in the housing is improved. The working fluid that has evaporated heat from the air in the housing reaches the condensing part (41b), dissipates heat to the wind sent to the radiating fin (45) by the blower (42), condenses, and the evaporating part (41a) Return to. Thus, the inside of the housing (1) is cooled.

  The power generation efficiency of the photovoltaic panel (3) decreases at night and in winter, but the temperature outside the case (1) also decreases at night and winter, so the temperature inside the case (1) also decreases, The housing (1) can be sufficiently cooled only by the heat exchange device (2).

  5 and 6 show a modification of the heat exchanger used in the heat exchange device (2) in the first and second embodiments.

  5 and 6, the heat exchanger (50) is formed by arranging a plurality of heat exchanger units (50A) in the left-right direction. Each heat exchanger unit (50A) includes a plurality of vertical rectangular flat plate portions (51a) arranged in parallel at intervals, and the front and rear edges of adjacent flat plate portions (51a). Aluminum having a connecting plate part (51b) for alternately connecting the parts alternately and having first gaps (54) opened at the rear side and second gaps (55) opened at the front side alternately Aluminum front and rear closing plates (52) and (53) (outer closing plate and inner closing plate) covering the entire front and rear surfaces of the meander plate (51) and the meander plate (51), the first of the meander plate (51) An aluminum lower closing member (56) for closing the lower end opening of the gap (54), an aluminum upper closing member (57) for closing the upper end opening of the second gap (55) of the meandering plate (51), and a meandering plate (51 ) First and second gaps (54), (55), and aluminum inner fins (58).

  The meander plate (51) is formed of an aluminum brazing sheet having a brazing filler metal layer on both sides. The front and rear closing plates (52) and (53) are meandered with their left and right ends bent inward in the front and rear direction and engaged with the outer surfaces of the flat plate portions (51a) at both left and right sides of the meandering plate (51). It is brazed to the plate (51). A notch (59) is formed from the lower end of a portion corresponding to the first gap (54) of the meandering plate (51) in the rear side closing plate (53), and the meandering plate (51) in the front side closing plate (52). A notch (60) is formed from the upper end of the portion corresponding to the second gap (55). The lower end of the notch (59) is closed by the lower closing member (56), and the upper end of the notch (60) is closed by the upper closing member (57). The lower closing member (56), the upper closing member (57), and the inner fin (58) are disposed between two adjacent flat plate portions (51a) of the meandering plate (51) and brazed to the flat plate portion (51a). Has been.

Then, two adjacent flat plate portions (51a) forming the first gap (54) of the meandering plate (51), and a connecting plate portion (51b) for connecting the front edge portions of the two flat plate portions (51a) together. ), The rear closing plate (53) and the lower closing member (56) form an air passage (61) in the housing, and two adjacent flat plate portions (second plate portion (55) of the meandering plate (51) ( 51a), a connecting plate portion (51b) for integrally connecting the rear edge portions of these two flat plate portions (51a), a front closing plate (52), and an upper closing member (57) to provide an outside air passage (62) Is formed.
The upper end of the air passage (61) in the housing is open, and the opening (61a) communicates with the air inlet (9) in the housing of the casing (5). Further, the air passage (61) in the housing opens rearward at the notch (59) of the rear closing plate (53), and this opening (61b) is the air outlet (10) in the housing of the casing (5). ). The lower end of the outside air passage (62) is open, and this opening (62a) communicates with the outside air inlet (13) of the casing (5). The outside air passage (62) is opened forward at the notch (60) portion of the front closing plate (52), and this opening (62b) is the outside air outlet (15) of the casing (5). Leads to.

  The inner fin (58) has a corrugated shape and is disposed such that the wave head and the wave bottom extend in the vertical direction. The inner fin (58) of the air passage (61) in the housing is disposed at a portion above the opening (61b), and the inner fin (58) of the air passage (62) outside the housing is a portion below the opening (62b). Is arranged.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a vertical sectional view schematically showing an overall configuration of a sealed case cooling device according to a first embodiment of the present invention. FIG. 2 is a perspective view showing the heat exchanger of the cooling device in the sealed casing of FIG. 1 with a part omitted and a part cut away. It is a horizontal sectional view which shows a part of heat exchanger of the cooling device in the airtight housing | casing of FIG. It is a vertical sectional view which shows roughly the whole structure of the airtight case cooling device of Embodiment 2 of this invention. It is a perspective view which abbreviate | omits one part and shows the modification of the heat exchanger of the cooling device in the sealed housing | casing of Embodiment 1 and 2 while notching one part. It is a horizontal sectional view which shows the heat exchanger unit which comprises the heat exchanger of FIG.

Explanation of symbols

(1): Sealed enclosure
(2): Heat exchange device
(3): Solar power generation panel
(4) (40): Cooling means
(5): Casing
(6): Heat exchanger
(7): Air blower in the housing
(8): Outside air blower
(9): Inlet air inlet
(10): Air outlet in the housing
(13): Outside air inlet
(15): Outside air outlet
(17): Internal air passage
(17a) (17b): Opening
(18): Outside air passage
(18a) (18b): Opening
(20): Flat plate
(21): Lower closing member
(22): Upper closing member
(23): First rear closing member (first inner closing member)
(24): First front closing member (first outer closing member)
(25): Second front closing member (second outer closing member)
(26): second rear closing member (second inner closing member)
(27): Inner fin
(30): Cooling fluid circulation pipe
(30a): Heat receiving part
(30b): Heat dissipation part
(31): Pump
(32): Heat receiving fin
(33): Radiating fin
(34): Blower
(41): Heat pipe
(41a): Evaporating section
(41b): Condensing part
(42): Blower
(50): Heat exchanger
(50A): Heat exchanger unit
(51): Meander board
(51a): Flat plate
(51b): Connecting plate
(52) (53): Closure plate
(54): 1st gap
(55): Second gap
(56): Lower closing member
(57): Upper closing member
(58): Inner fin
(61): Internal air passage
(61a) (61b): Opening
(62): Outside air passage
(62a) (62b): Opening

Claims (15)

A device that cools the inside of a sealed housing, has a sealed housing, an air passage inside the housing and an air passage outside the housing, and heat that exchanges heat between the air inside the housing and the air outside the housing. A hermetically sealed casing cooling apparatus comprising: an exchange device; a photovoltaic power generation panel disposed outside the casing; and a cooling unit that cools the casing using electric power obtained by the photovoltaic power generation panel. A heat exchange device includes a casing, a heat exchanger disposed in the casing, an air blower in the casing that takes air in the casing into the casing, passes the heat exchanger, and returns the air to the casing, An outside air blower that takes air into the casing and passes it through the heat exchanger and then returns to the outside of the housing.The casing has an air inlet and air outlet inside the housing that communicates with the inside of the housing, and an outside of the housing. An external air inlet and an external air outlet that communicate with each other are formed, and the heat exchanger communicates with the internal air passage that communicates with the internal air inlet and the internal air outlet, and the external air inlet and the external air outlet. 2. The hermetically sealed internal casing cooling device according to claim 1, further comprising an internal air passage and an independent external air passage, wherein inner fins are respectively disposed in the internal air passage and the external air passage. The air passage inside the housing and the air passage outside the housing extend in the vertical direction of the heat exchanger, the air inlet inside the housing and the air outlet outside the housing are formed in the upper part of the casing, respectively, and the air outlet inside the housing and the air inlet outside the housing are The cooling device in a sealed casing according to claim 2, wherein the cooling device is in a lower part of the casing. The heat exchanger has a plurality of vertical rectangular plates arranged in parallel at intervals, a lower closing member that closes every other lower end opening of the gap between adjacent plates, and between adjacent plates An upper closing member that closes the upper end opening of the gap in which the lower end opening is not closed, and an opening to the inside of the housing in the gap between the adjacent flat plates in which the lower end opening is closed, The first inner closing member that is closed except the first inner closing member that closes the entire opening to the outside of the housing in the gap in which the lower end opening is closed among the gaps between the adjacent flat plates, and the gap between the adjacent flat plates A second outer closing member that closes the opening to the outside of the casing in the gap in which the upper end opening is closed, and the casing in the gap in which the upper end opening is closed among the gaps between adjacent flat plates. Second to close the entire inward opening A side closing member and an inner fin disposed in a gap between adjacent flat plates, and an air passage in the housing by the two adjacent flat plates, the lower closing member, the first inner closing member and the first outer closing member. 4. The hermetically sealed internal casing cooling device according to claim 2, wherein an air passage outside the casing is formed by two adjacent flat plates, an upper closing member, a second outer closing member, and a second inner closing member. A heat exchanger connects a plurality of vertically-rectangular flat plates arranged in parallel and spaced apart from each other, and the inner and outer casing edges of adjacent flat plates alternately and integrally. A meandering plate having a first gap that opens to the inside of the housing and a second gap that opens to the outside of the housing, facing the inside of the housing and the outside of the housing Both inner and outer closing plates covering the entire surface, a lower closing member for closing the lower end opening of the first gap of the meandering plate, an upper closing member for closing the upper end opening of the second gap of the meandering plate, and the first of the serpentine plate And an inner fin disposed in the second gap, an opening is formed at the lower end of the portion corresponding to the first gap of the meandering plate in the inner closing plate, and corresponds to the second gap of the meandering plate in the outer closing plate An opening is formed at the upper end of the part to be An air passage in the housing is formed by two adjacent flat plate portions that form a frame, a connecting plate portion that integrally connects the outer side edge portions of the two flat plate portions, an inner closing plate, and a lower closing member. An outside air passage is formed by two adjacent flat plate portions forming the second gap, a connecting plate portion that integrally connects the case inner edges of these two flat plate portions, an outer closing plate, and an upper closing member. The cooling device in a sealed casing according to claim 2 or 3. A cooling fluid circulation pipe that is arranged so that the cooling means straddles the inside and outside of the casing and circulates the cooling fluid inside and outside the casing, and a pump that is arranged outside the casing and circulates the cooling fluid in the cooling fluid circulation pipe. The cooling fluid circulation pipe is provided with a heat receiving portion in a portion existing in the casing and a heat radiating portion in a portion existing outside the casing, and the pump is driven by the electric power obtained by the photovoltaic power generation panel. The cooling device in a sealed casing according to any one of claims 1 to 5. The hermetically sealed internal casing cooling device according to claim 6, wherein the heat receiving portion of the cooling fluid circulation pipe is disposed in the vicinity of the inlet of the internal air passage in the heat exchange apparatus. The cooling device in a sealed casing according to claim 6 or 7, wherein heat receiving fins are provided around the heat receiving portion of the cooling fluid circulation pipe, and heat radiating fins are similarly attached around the heat radiating portion. The cooling device in a hermetically sealed casing according to claim 8, wherein a blower for sending wind to the radiating fins of the cooling fluid circulation pipe is disposed outside the casing, and the blower is driven by electric power obtained by the photovoltaic power generation panel. The cooling means includes a plurality of heat pipes arranged so as to straddle the inside and outside of the housing, and a blower that sends air to a portion existing outside the housing in the heat pipe, and a portion existing in the housing of the heat pipe The evaporator according to claim 1, wherein a condensing part is provided in a portion existing outside the housing, and the blower is driven by electric power obtained by the photovoltaic power generation panel. Internal cooling device. The hermetic cooling device in a sealed casing according to claim 10, wherein the evaporating part of the heat pipe is arranged in the vicinity of the inlet of the air passage in the casing in the heat exchange device. The cooling device in a sealed casing according to claim 10 or 11, wherein a heat receiving fin is provided around the evaporation portion of the heat pipe, and a radiation fin is similarly attached around the condensation portion, and air is sent to the radiation fin by a blower. . The airtight casing cooling device according to any one of claims 1 to 12, wherein a white coating film is formed on the entire outer surface of the casing. The cooling device in a sealed casing according to any one of claims 1 to 13, wherein a heat generating electronic component is disposed in the sealed casing. A wireless relay device for a mobile radio telephone, wherein the sealed housing of the cooling device in the sealed housing according to any one of claims 1 to 13 is used as a housing.

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