JP2007315720A - Cooling device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling device capable of effectively utilizing high temperature air heated by exchanging heat with a refrigerant which has flowed into a radiator. <P>SOLUTION: Air which has exchanged heat with the refrigerant flowing through the upper reaches in the refrigerant flow direction of each heat exchange tube 35c is guided to an evaporating member 39. The air becoming high in temperature by exchanging heat with the refrigerant immediately after flowing into the radiator 35 can thereby be brought into contact with the evaporating member 39, and the amount of evaporation of drain water can be increased. Air which has exchanged heat with the refrigerant flowing except the upper reaches in the refrigerant flow direction of each heat exchange tube 35c is guided to a compressor 37. The air of comparatively low temperature other than the air becoming high in temperature by exchanging heat with the refrigerant immediately after flowing into the radiator 35 can thereby be brought into contact with the compressor 37, and the cooling effect of the compressor 37 can be improved. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cooling device that can use air exchanged with a refrigerant in a radiator to evaporate drain water in an evaporating member or regenerate a dehumidifying member.

  Conventionally, as this type of cooling device, a radiator that radiates the refrigerant, a compressor that compresses the refrigerant that circulates through the radiator, a blower that circulates air that exchanges heat with the refrigerant that circulates through the radiator, and a radiator There is known one provided with an evaporation member that is provided on the downstream side in the air flow direction and evaporates drain water generated by cooling (see, for example, Patent Document 1).

  The cooling device evaporates the drain water by bringing the air heat-exchanged with the refrigerant in the radiator into contact with the evaporating member, and cools the compressor by bringing into contact with the outer surface of the compressor. Here, in order to increase the evaporation amount of the drain water evaporated from the evaporation member, it is effective to bring hotter air into contact with the evaporation member.

  Other cooling devices include a radiator that radiates the refrigerant, a compressor that compresses the refrigerant that circulates through the radiator, a blower that circulates air that exchanges heat with the refrigerant that circulates through the radiator, and a predetermined space. There is known a device provided with a dehumidifying member that adsorbs moisture in the air supplied to the air and releases the moisture adsorbed by the air heated by the radiator (for example, see Patent Document 2).

This cooling device releases air by bringing the air heat-exchanged with the refrigerant in the radiator into contact with the dehumidifying member that has adsorbed moisture, and cools the compressor by bringing it into contact with the outer surface of the compressor. ing. Here, in order to efficiently release the moisture adsorbed by the dehumidifying member, it is effective to bring higher temperature air into contact with the dehumidifying member.
JP-A-2005-74090 JP 2003-130391 A

  By the way, in each said cooling device, when using the fluid in which the high voltage | pressure side, such as a carbon dioxide, becomes a supercritical state as a refrigerant | coolant, the temperature of the refrigerant | coolant which flows in into a heat radiator becomes high compared with a CFC refrigerant | coolant. Further, the temperature of the refrigerant in the radiator has a characteristic that it gradually decreases and becomes constant from a high state, while it suddenly decreases and becomes constant in the case of the chlorofluorocarbon refrigerant.

  However, when a refrigerant in which the high pressure side is in a supercritical state is used for each of the cooling devices, the high temperature air exchanged with the high temperature refrigerant in the radiator and the low temperature air exchanged with the constant temperature refrigerant are mixed. Therefore, the high-temperature air exchanged with the high-temperature refrigerant in the radiator is not effectively used.

  An object of the present invention is to provide a cooling device that can effectively use high-temperature air heated by exchanging heat with the refrigerant flowing into the radiator.

  To achieve the above object, the present invention circulates a radiator that radiates heat in a supercritical state refrigerant, a compressor that compresses the refrigerant circulated through the radiator, and air that exchanges heat with the refrigerant that circulates through the radiator. In a cooling device including a blower and an evaporating member that evaporates drain water generated by cooling of an object to be cooled, the evaporating member is disposed on the downstream side in the air circulation direction on the upstream side in the refrigerant circulation direction of the radiator.

  Thereby, the high-temperature air exchanged with the high-temperature refrigerant flowing into the radiator comes into contact with the evaporation member.

  In order to achieve the above object, the present invention provides a radiator that dissipates heat in the supercritical state refrigerant, a compressor that compresses the refrigerant that circulates in the radiator, and air that exchanges heat with the refrigerant that circulates in the radiator. In a cooling device comprising a blower that circulates and a dehumidifying member that adsorbs moisture in the air supplied into the predetermined space and releases the adsorbed moisture by air heated by a radiator, the dehumidifying member is a radiator It arrange | positions in the air distribution direction downstream of the refrigerant | coolant distribution direction upstream.

  Thereby, the high-temperature air exchanged with the high-temperature refrigerant flowing into the radiator contacts the dehumidifying member.

  According to the present invention, since the high-temperature air that has exchanged heat with the high-temperature refrigerant that has flowed into the radiator can be brought into contact with the evaporation member, it is possible to increase the evaporation amount of the drain water.

  In addition, according to the present invention, since the high-temperature air exchanged with the high-temperature refrigerant flowing into the radiator can be brought into contact with the dehumidifying member, the adsorbed moisture can be efficiently released.

  FIG. 1 to FIG. 5 show a showcase that can be cooled in a state where merchandise to be sold is displayed as a first embodiment of the cooling device of the present invention. FIG. 1 is an overall perspective view of the showcase, and FIG. 3 is a plan view of the machine room, FIG. 4 is an overall perspective view of the radiator, and FIG. 5 is a horizontal position from the inflow header side of the radiator and heat exchange with the refrigerant at that position. It is a figure which shows the relationship with the temperature of the air after having performed.

  This showcase includes a showcase body 10 having an opening on the front surface, an air passage 20 provided in the showcase body 10, and a machine room 30 provided in a lower portion of the showcase body 10.

  In the showcase body 10, the upper surface side, the back surface side, and the bottom surface side are formed by heat insulating walls 11, and both the left and right side surfaces are covered with glass plates 12. In the showcase body 10, a top plate 13, a back plate 14, and a bottom plate 15 are provided on the upper surface side, the back surface side, and the bottom surface side, respectively, spaced from the inner surface of the heat insulating wall 11, and the product storage portion 16 is provided therein. Is formed. In the product storage unit 16, a plurality of product shelves 17 are arranged side by side in the vertical direction, and products are placed on the bottom plate 15 and the top surfaces of the product shelves 17.

  The ventilation path 20 is provided between the inner surface of the heat insulating wall 11 and the top plate 13, the back plate 14, and the bottom plate 15. At the lower end of the opening of the showcase body 10, an air inlet 21 communicating with the ventilation path 20 is provided in the left-right direction, and the ventilation path is provided at the upper end of the opening of the showcase body 10 in the left-right direction. An air discharge port 22 communicating with 20 is provided. In addition, the air passage 20 located on the back side of the product storage unit 16 is provided with a cooler 23 for cooling the air flowing through the air passage 20, and the air passage 20 located on the bottom side of the product storage unit 16. Are provided with a cooler blower 24 for circulating air through the ventilation path 20. Further, the heat insulating wall 11 on the bottom side is provided with a drain hole 25 for discharging drain water such as dew condensation water and defrost water generated in the cooler 23 to the machine room 30.

  The machine room 30 is provided between the lower surface of the heat insulating wall 11 on the bottom surface side and the floor plate 31, and the front side, the back side, and the left and right side surfaces are covered with the front panel 32, the back panel 33, and the side panel 34, respectively. . The front panel 32 is provided with an intake port 32a, and the rear panel 33 is provided with an exhaust port 33a. In the machine room 30, a radiator 35 for releasing the heat absorbed by the refrigerant in the cooler 23, and air that exchanges heat with the refrigerant flowing through the radiator 35 circulates from the front to the rear of the machine room 30. A radiator fan 36 as a pair of fans to be blown, a compressor 37 for circulating refrigerant through the cooler 23 and the radiator 35, and a drain pan for receiving drain water flowing from the drain hole 25 into the machine chamber 30 38, an evaporation member 39 for promoting the evaporation of drain water in the drain pan 38, and a partition member for partitioning the inside of the machine chamber 30 downstream of the radiator 35 in the air flow direction into the evaporation member 39 side and the compressor 37 side. 40.

  The radiator 35 is provided with an inflow header 35a and an outflow header 35b that are spaced apart from each other in the left-right direction in the machine chamber 30 and extend in the up-down direction. It consists of the exchange tube 35c and the radiation fin 35d provided between each heat exchange tube 35c.

  The inflow header 35a and the outflow header 35b are each made of a member formed in a hollow cylindrical shape made of aluminum or the like, and the heat exchange tubes 35c are connected side by side at intervals in the central axis direction. The inflow header 35 a located on the left side in the machine room 30 is provided with a refrigerant inflow port 35 e for allowing the refrigerant discharged from the compressor 37 to flow in. The outflow header 35 b located on the right side in the machine room 30 is provided with a refrigerant outlet 35 f for allowing the radiated refrigerant to flow out toward the cooler 23.

  Each heat exchange tube 35c is made of a flat tube made of metal such as aluminum, and is connected to each header 35a, 35b so that the longitudinal direction of the cross section faces the air flow direction.

  The heat dissipating fin 35d is made of a member formed in a wave shape by vertically bending a metal plate such as aluminum extending in the left-right direction, and each heat fin 35d is in contact with the heat exchange tubes 35c located on the upper side and the lower side. It is attached between the exchange tubes 35c.

  The radiator fans 36 are arranged in the left-right direction in the machine room 30 on the downstream side of the radiator 35 in the air flow direction. Each radiator blower 36 allows air that exchanges heat with the refrigerant flowing through the radiator 35 to flow into the machine chamber 30 from the intake port 32a and to be discharged from the exhaust port 33a to the outside.

  The compressor 37 is provided on the downstream side in the air flow direction of the radiator fan 36 located on the right side in the machine room 30. Further, the compressor 37 is sequentially connected to a radiator 35, an expansion valve (not shown) and a cooler 23 via a pipe such as a copper pipe and a stainless pipe, thereby constituting a refrigerant circulation circuit. As the refrigerant circulating in the refrigerant circuit, carbon dioxide is used as a natural refrigerant that has little environmental impact such as global warming and ozone layer destruction. Carbon dioxide used as a refrigerant has a characteristic that the high pressure side is in a supercritical state.

  The drain pan 38 is formed in a shallow box shape whose upper surface is opened, and is provided on the downstream side in the air flow direction of the radiator fan 36 located on the left side in the machine room 30.

  The evaporating member 39 includes a plurality of evaporating plates 39a formed in a flat plate shape, and the left and right sides of the machine chamber 30 in which the evaporating plates 39a are orthogonal to each other so as to circulate air between the evaporating plates 39a. They are arranged in the drain pan 38 at intervals in the direction. Each evaporation plate 39a is made of a nonwoven fabric such as polyester fiber, and absorbs drain water in the drain pan 38 by capillary action.

  The partition member 40 partitions the inside of the machine chamber 30 on the downstream side in the air flow direction of the radiator 35 into an evaporation member 39 side and a compressor 37 side, so that the air that has passed through the inflow header 35a side of the radiator 35 is evaporated. The air that has been circulated to the 39 side and passed through the outflow header 35 b side of the radiator 35 is circulated to the compressor 37 side. Further, the partition member 40 is configured to partition the position of one-third to one-half of the horizontal dimension of the radiator 35 from the inflow header 35a side of the radiator 35.

  In the cooling device configured as described above, the refrigerant discharged from the compressor 37 dissipates heat by flowing through the radiator 35 and absorbs heat by flowing to the cooler 23 through the expansion valve to compress the compressor. 37 is inhaled.

  The air sucked into the ventilation path 20 from the air suction port 21 by the cooler blower 24 is cooled by exchanging heat with the refrigerant that absorbs heat in the cooler 23 and then discharged from the air discharge port 22. The products placed on the bottom plate 15 and the product shelves 17 are stored cold. At this time, in the cooler 23, the air is cooled and condensation occurs, and the condensed water flows into the drain pan 38 in the machine room 30 through the drain hole 25 as drain water. The drain water that has flowed into the drain pan 38 is absorbed by the evaporation member 39.

  The air outside the machine room 30 that has flowed into the machine room 30 from the air inlet 32a by each radiator blower 36 is heated by exchanging heat with the refrigerant that radiates heat in the radiator 35, and then the compressor 37 side by the partition member 40. And the inside of the machine room 30 are divided into the evaporation member 39 side. The air flowing through the evaporation member 39 side of the partition member 40 evaporates the drain water absorbed by the evaporation member 39 by coming into contact with the evaporation member 39, and is then discharged from the exhaust port 33 a to the outside of the machine room 30. . The air that circulates on the compressor 37 side of the partition member 40 cools the compressor 37 and is then discharged out of the machine room 30 through the exhaust port 33a.

  Here, the relationship between the distance L from the inflow header 35a side in the refrigerant distribution direction of the radiator 35 and the temperature T of the air after heat exchange with the refrigerant flowing through each heat exchange tube 35c at the position of the distance L is shown. 5 will be described. In FIG. 5, the relationship between the distance L and the temperature T indicated by a solid line indicates a case where carbon dioxide is used as the refrigerant, and the relationship between the distance L and the temperature T indicated by a broken line indicates a case where Freon is used as the refrigerant. .

  As shown in FIG. 5, when using chlorofluorocarbon as a refrigerant, the temperature T of the air after heat exchange suddenly decreases from the inflow header 35a side to the outflow header 35b side, and becomes constant. When carbon dioxide is used as the refrigerant, the temperature T gradually decreases from the inflow header 35a side to the outflow header 35b side to a distance L that is one third to one half of the refrigerant flow direction dimension of the radiator 35. It becomes constant.

  For example, air flowing into the machine room 30 at 30 ° C. is heated to about 120 ° C. by exchanging heat with the refrigerant flowing through the heat exchange tubes 35 c in the vicinity of the inflow header 35 a of the radiator 35. It is heated to about 40 ° C. by exchanging heat with the refrigerant flowing through each heat exchange tube 35c in the vicinity of the outflow header 35b. That is, when the partition member 40 divides the position of one third of the horizontal dimension of the radiator 35 from the inflow header 35a side of the radiator 35 by the partition member 40, the radiator 35 is heated and circulates through the evaporation member 39 side of the partition member 40. The temperature of the air is about 75 ° C. Further, when the central portion of the radiator 35 in the left-right direction dimension is partitioned by the partition member 40, the temperature of the air heated in the radiator 35 and flowing through the evaporation member 39 side of the partition member 40 becomes about 70 ° C.

  Thereby, since the high temperature air which distribute | circulates the evaporation member 39 side of the partition member 40 contacts the evaporation member 39, it becomes possible to increase the evaporation amount of drain water. Moreover, since the low temperature air which distribute | circulates the compressor 37 side of the partition member 40 contacts the compressor 37, it becomes possible to cool the compressor 37 efficiently.

  Thus, according to the cooling device of the present embodiment, the heat exchanged with the refrigerant circulating in the refrigerant circulation direction upstream side of each heat exchange tube 35c is guided to the evaporation member 39. Air that becomes high temperature by exchanging heat with the refrigerant immediately after inflow can be brought into contact with the evaporating member 39, and the evaporation amount of drain water can be increased.

  In addition, since air that has exchanged heat with the refrigerant that circulates other than the upstream side in the refrigerant distribution direction of each heat exchange tube 35c is guided to the compressor 37, heat exchange with the refrigerant immediately after flowing into the radiator 35 causes the Relatively low-temperature air other than the air to be made can be brought into contact with the compressor 37, and the cooling effect of the compressor 37 can be improved.

  Further, the evaporating member 39 is arranged on the upstream side in the refrigerant flow direction of the heat exchange tube 35c on the downstream side in the air flow direction of the radiator 35, and the refrigerant flow direction upstream in the heat exchange tube 35c on the downstream side in the air flow direction of the radiator 35. Since the compressor 37 is arranged on the side other than the side and the partition member 40 is provided to partition the downstream side in the air flow direction of the radiator 35 between the evaporation member 39 side and the compressor 37 side, immediately after flowing into the radiator 35 with a simple configuration It is possible to guide the air that becomes high temperature by exchanging heat with the refrigerant to the evaporating member 39 side, and relatively low-temperature air other than the air that becomes high temperature by exchanging heat with the refrigerant just after flowing into the radiator 35 is compressor. It becomes possible to guide to the 37 side, and it becomes possible to reduce the manufacturing cost.

  In addition, since a pair of radiator blowers 36 capable of circulating air in the space on the evaporation member 39 side of the partition member 40 and the space on the compressor 37 side of the partition member 40 are provided, In addition to efficiently dissipating heat, each radiator fan 36 allows air to circulate through the space on the evaporation member 39 side of the partition member 40 and the space on the compressor 37 side of the partition member 40, thereby evaporating and compressing drain water. It becomes possible to distribute the air at a flow rate necessary for cooling the machine 37 without excess or deficiency.

  FIG. 6 shows an air conditioner that performs cooling while dehumidifying a predetermined air-conditioned space as a second embodiment of the cooling apparatus of the present invention, and is a schematic configuration diagram of the air conditioner. In addition, the same code | symbol is attached | subjected and shown to the component similar to the said embodiment.

  This air conditioner has a first ventilation path 51 and a second ventilation path 52 that are arranged in parallel to each other, and both ends of the first ventilation path 51 communicate with the air-conditioned space. Both ends communicate with the outdoors.

  The first ventilation path 51 has a cooler 23 for cooling the air flowing through the first ventilation path 51, and the air for passing the air-conditioned space through the first ventilation path 51 to return it to the conditioned space. A cooler blower 24 is provided.

  In the second ventilation path 52, the heat absorbed by the refrigerant in the cooler 23 is released, and the radiator 35 for heating the air flowing through the second ventilation path 52 and the second ventilation path 52 A pair of radiator fans 36 for circulating outdoor air and discharging it outdoors, and a compressor 37 for circulating the refrigerant through the cooler 23 and the radiator 35 are provided.

  The air conditioner also includes a desiccant rotor 53 as a dehumidifying member for adsorbing moisture in the air flowing through the first ventilation path 51 and releasing it into the air flowing through the second ventilation path 52. ing. The desiccant rotor 53 is formed of a member in which an element 53a containing a hygroscopic agent such as silica gel or zeolite is formed in a disk shape, and the first ventilation path 51 and the second ventilation path 52 on the first ventilation path 51 side. Are provided. Further, the desiccant rotor 53 is configured such that the element 53 a is rotated about the radial center of the element 53 a by a motor (not shown), and the first ventilation path 51 and the first ventilation path 52. The element 53a moves while rotating between the side 51 and the side.

  The radiator 35 is provided on the upstream side in the air flow direction of the desiccant rotor 53, the inflow header 35a is disposed on the first ventilation path 51 side of the second ventilation path 52, and the outflow header 35b is disposed on the opposite side. ing.

  Each radiator blower 36 is arranged side by side on the inflow header 35 a side and the outflow header 35 b side of the second ventilation path 52, and air exchanges heat with the refrigerant flowing through the radiator 35 from the outside to the second ventilation path 52. Inflow and discharge to the outdoors.

  The compressor 37 is provided on the outflow header 35 b side of the second ventilation path 52. Further, the compressor 37 is sequentially connected to the radiator 35, the expansion valve 54, and the cooler 23 via a pipe such as a copper pipe or a stainless steel pipe to constitute a refrigerant circulation circuit. As the refrigerant circulating in the refrigerant circuit, carbon dioxide whose high pressure side is in a supercritical state is used.

  Further, the downstream side in the air flow direction of the radiator 35 in the second ventilation path 52 is partitioned by the partition member 40 into the desiccant rotor 53 side and the compressor 37 side, and has passed through the inflow header 35 a side of the radiator 35. Air is circulated to the desiccant rotor 53 side, and air that has passed through the outflow header 35b side of the radiator 35 is circulated to the compressor 37 side. Moreover, the partition member 40 partitions the position of one third to one half of the refrigerant flow direction dimension of the radiator 35 from the inflow header 35a side of the radiator 35.

  In the cooling device configured as described above, the refrigerant discharged from the compressor 37 dissipates heat by flowing through the radiator 35 and absorbs heat and compresses by flowing through the expansion valve 54 to the cooler 23. Inhaled into machine 37.

  The air (RA) in the air-conditioned space sucked into the first ventilation path 51 by the cooler blower 24 is dehumidified by contacting the element 53a of the desiccant rotor 53, and exchanges heat with the refrigerant that absorbs heat in the cooler 23. After being cooled, the air-conditioned space is supplied (SA), and the air-conditioned space is dehumidified and cooled.

  The outdoor air (OA) that has flowed into the second ventilation path 52 by each radiator blower 36 is heated by exchanging heat with the refrigerant that dissipates heat in the radiator 35, and then separated from the compressor 37 by the partition member 40. Divided into the rotor 53 side for distribution. The high-temperature air flowing through the desiccant rotor 53 side of the partition member 40 is discharged to the outside from the second ventilation path 52 after the moisture adsorbed by the element 53a is released by contacting the desiccant rotor 53. (EA). The air having a lower temperature than the temperature of the air on the desiccant rotor 53 side of the partition member 40 that circulates on the compressor 37 side of the partition member 40 cools the compressor 37 and then goes outside from the second ventilation path 52. It is discharged (EA).

  Thereby, since the high temperature air which distribute | circulates the desiccant rotor 53 side of the partition member 40 contacts the desiccant rotor 53, it becomes possible to discharge | release the water | moisture content which the element 53a adsorb | sucked efficiently. Moreover, since the low temperature air which distribute | circulates the compressor 37 side of the partition member 40 contacts the compressor 37, it becomes possible to cool the compressor 37 efficiently.

  As described above, according to the cooling device of the present embodiment, the heat exchanged with the refrigerant circulating in the refrigerant circulation direction upstream of each heat exchange tube 35c is guided to the desiccant rotor 53. Air that becomes high temperature by heat exchange with the refrigerant immediately after inflow can be brought into contact with the element 53a, and the moisture adsorbed by the element 53a can be efficiently released.

  In addition, since air that has exchanged heat with the refrigerant that circulates other than the upstream side in the refrigerant distribution direction of each heat exchange tube 35c is guided to the compressor 37, heat exchange with the refrigerant immediately after flowing into the radiator 35 causes the Relatively low-temperature air other than the air to be made can be brought into contact with the compressor 37, and the cooling effect of the compressor 37 can be improved.

  In addition, a desiccant rotor 53 is disposed upstream of the heat exchange tube 35c on the downstream side in the air flow direction of the radiator 35 in the refrigerant flow direction, and upstream of the heat exchange tube 35c on the downstream side in the air flow direction of the radiator 35. Since the compressor 37 is disposed on the side other than the side and the partition member 40 is provided to partition the desiccant rotor 53 side and the compressor 37 side on the downstream side in the air flow direction of the radiator 35, immediately after flowing into the radiator 35 with a simple configuration It becomes possible to guide the air that becomes high temperature by exchanging heat with the refrigerant to the desiccant rotor 53 side, and relatively low-temperature air other than the air that becomes high temperature by exchanging heat with the refrigerant just after flowing into the radiator 35 is compressed by the compressor. It becomes possible to guide to the 37 side, and it becomes possible to reduce the manufacturing cost.

  In addition, since a pair of radiator blowers 36 capable of circulating air are provided in the space on the desiccant rotor 53 side of the partition member 40 and the space on the compressor 37 side of the partition member 40, the refrigerant is supplied to the radiator 35. In addition to efficiently dissipating heat, each radiator blower 36 can distribute air to the space on the side of the desiccant rotor 53 of the partition member 40 and the space on the side of the compressor 37 of the partition member 40, It becomes possible to circulate air at a flow rate necessary for cooling the compressor 37 without excess or deficiency.

  In the first and second embodiments, the radiator 35 includes an inflow header 35a and an outflow header 35b, a plurality of heat exchange tubes 35c whose both ends are connected to the headers 35a and 35b, and each heat exchange tube. Although the thing comprised from the radiation fin 35d provided between 35c was shown, as shown, for example in FIG.7 and FIG.8, the several heat exchange unit provided side by side in the distribution direction of the air which heat-exchanges with a refrigerant | coolant The counterflow type heat exchanger which has 61 and distribute | circulates a refrigerant | coolant toward the heat exchange unit 61 located in the air circulation direction upstream from the heat exchange unit 61 located in the air circulation direction downstream is used as the heat radiator 60. May be.

  The heat exchange unit 61 includes a pair of headers 61a provided at a distance from each other, a plurality of heat exchange tubes 61b whose opposite ends are connected to the headers 61a, and heat dissipation provided between the heat exchange tubes 61b. It consists of fins 61c.

  This radiator 60 is provided with a refrigerant inlet 61d in one header 61a of the heat exchange unit 61 located on the most downstream side in the air circulation direction, and one of the heat exchange units 61 located on the most upstream side in the air circulation direction. The header 61a is provided with a refrigerant outlet 61e. In addition, each heat exchange unit 61 includes a header 61a on the refrigerant inflow side of the heat exchange unit 61 located on the upstream side in the air circulation direction adjacent to the header 61a on the refrigerant outflow side of the heat exchange unit 61 located on the downstream side in the air circulation direction. Are connected by a connecting pipe 61f so that the refrigerant flows from the heat exchange unit 61 located on the downstream side toward the heat exchange unit 61 located on the upstream side.

  In the heat radiator 60 configured as described above, the air exchanged with the refrigerant circulating in the refrigerant flow direction upstream side of each heat exchange tube 61b of the heat exchange unit 61 located on the most downstream side is the evaporating member 39 or the desiccant rotor. By guiding to 53, it becomes possible to effectively utilize the air that is heated by exchanging heat with the refrigerant immediately after flowing into the radiator 60.

  In this case, one-third of the refrigerant flow direction dimension of the heat exchange unit 61 from the header 61a side into which the refrigerant discharged from the compressor of the heat exchange unit 61 located on the most downstream side in the air flow direction of the radiator 60 flows. By partitioning the downstream side in the air flow direction of the half position by the partition member 40, only the air that becomes high temperature by exchanging heat with the refrigerant flowing through the radiator 60 is allowed to flow to the evaporation member 39 side or the desiccant rotor 53 side. Accordingly, it is possible to efficiently evaporate the drain water in the evaporating member 39 or release the adsorbed water in the desiccant rotor 53.

  In the first and second embodiments, the radiator fans 36 are arranged on the downstream side in the air flow direction of the radiator 35. However, the radiator fans 36 are disposed on the radiator 35. You may make it arrange | position to the air distribution direction upstream.

1 is an overall perspective view of a showcase showing a first embodiment of the present invention. Side cross-sectional view of showcase Plan view of machine room Overall perspective view of radiator The figure which shows the relationship between the position of the left-right direction from the inflow header side of a radiator, and the temperature of the air after heat-exchange with the refrigerant | coolant in the position The schematic block diagram of the air conditioning apparatus which shows the 2nd Embodiment of this invention Overall perspective view of heat radiator showing other examples Overall perspective view of heat radiator showing other examples

Explanation of symbols

  DESCRIPTION OF SYMBOLS 30 ... Machine room, 35 ... Radiator, 35a ... Inflow header, 35b ... Outflow header, 35c ... Heat exchange tube, 36 ... Radiator for radiator, 37 ... Compressor, 39 ... Evaporating member, 40 ... Partition member, 52nd 2 ventilation paths, 53 ... desiccant rotor, 60 ... radiator, 61 ... heat exchange unit, 61a ... header, 61b ... heat exchange tube.

Claims (14)

A radiator that dissipates the refrigerant in the supercritical state, a compressor that compresses the refrigerant that is circulated through the radiator, a blower that circulates air that exchanges heat with the refrigerant that circulates through the radiator, and drain water generated by cooling the cooling target In a cooling device comprising an evaporation member that evaporates
The cooling device, wherein the evaporating member is arranged on the downstream side in the air circulation direction on the upstream side in the refrigerant circulation direction of the radiator. The cooling device according to claim 1, wherein the compressor is disposed on the downstream side in the air circulation direction other than the upstream side in the refrigerant circulation direction of the radiator. The cooling device according to claim 1 or 2, further comprising air guide means for guiding air exchanged with the refrigerant upstream of the radiator in the refrigerant flow direction to the evaporating member. The cooling device according to claim 3, wherein the air guide means is configured by a partition member that partitions the downstream side in the air flow direction of the radiator into an evaporation member side and a compressor side. The cooling device according to claim 4, wherein the blower is configured by a pair of blowers that allow air to circulate through spaces on the evaporation member side and the compressor side of the partition member. 5. The partition member is provided so as to partition the downstream side in the air circulation direction at a position that is one third to one half of the external dimension of the radiator from the upstream side in the refrigerant circulation direction of the radiator. Or the cooling device of 5. A plurality of heat exchange tubes that circulate a refrigerant that exchanges heat with air through the radiator, an upstream header into which the refrigerant flows in an upstream side of each heat exchange tube, and a heat exchanger tube. A plurality of heat exchange units are arranged in the air flow direction and connected to the downstream end of the tube in the refrigerant flow direction, and each of the heat exchange tubes is composed of a downstream header into which the refrigerant heat-exchanged with air flows and discharged from the compressor. Each of the heat exchange units is connected so that the refrigerated refrigerant flows from the heat exchange unit at the most downstream side in the air flow direction to the heat exchange unit at the upstream side in the adjacent air flow direction. Item 7. The cooling device according to any one of Items 1 to 6. A radiator that dissipates heat in the supercritical state, a compressor that compresses the refrigerant that circulates in the radiator, a blower that circulates air that exchanges heat with the refrigerant that circulates in the radiator, and the air that is supplied into the predetermined space In a cooling device comprising a dehumidifying member that adsorbs moisture and releases the adsorbed moisture by air heated by a radiator,
The said dehumidification member has been arrange | positioned in the air distribution direction downstream of the refrigerant | coolant distribution direction upstream of a heat radiator. The cooling device characterized by the above-mentioned. The cooling device according to claim 8, wherein the compressor is arranged on the downstream side in the air circulation direction other than the upstream side in the refrigerant circulation direction of the radiator. The cooling device according to claim 8 or 9, further comprising air guide means for guiding the air heat-exchanged with the refrigerant on the upstream side in the refrigerant flow direction of the radiator to the dehumidifying member. The cooling device according to claim 10, wherein the air guiding means is configured by a partition member that partitions the downstream side in the air flow direction of the radiator into a dehumidifying member and a compressor side. The cooling device according to claim 11, wherein the blower is configured by a pair of blowers that allow air to circulate through spaces on the dehumidifying member side and the compressor side of the partition member. The partition member is provided so as to partition from the upstream side in the refrigerant flow direction of the radiator to the downstream side in the air flow direction at a position one third to one half of the external dimension of the radiator. Or the cooling device of 12. A plurality of heat exchange tubes that circulate a refrigerant that exchanges heat with air through the radiator, an upstream header into which the refrigerant flows in an upstream side of each heat exchange tube, and a heat exchanger tube. A plurality of heat exchange units are arranged in the air flow direction and connected to the downstream end of the tube in the refrigerant flow direction, and each of the heat exchange tubes is composed of a downstream header into which the refrigerant that has exchanged heat with the air flows and discharged from the compressor. Each of the heat exchange units is connected so that the refrigerated refrigerant flows from the heat exchange unit at the most downstream side in the air flow direction to the heat exchange unit at the upstream side in the adjacent air flow direction. Item 14. The cooling device according to any one of Items 8 to 13.

Images