JP2012117737A - Heat exchanging equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure of heat exchanging equipment that compactifies installation, minimizes installation fees, and facilitates installation work by arranging a pair of liquid-gas heat exchangers via a partition wall which separates the inside of a room from the outside of the room.SOLUTION: In heat exchanging equipment wherein a pair of liquid-gas heat exchangers is arranged via the partition wall which separates the inside of the room from the outside of the room to make outdoor air ventilate the external fluid in one of the liquid-gas heat exchangers, and indoor air ventilate the external fluid in the other liquid-gas heat exchanger, and wherein the fluid (liquid) in both the liquid-gas heat exchangers is circulated via a pipe connecting with the inside fluid to exchange the outdoor air with the indoor air, an outdoor air unit having the liquid-gas heat exchanger that conducts the outdoor air, and an indoor air unit having the liquid-gas heat exchanger that conducts the indoor air are integrally and symmetrically arranged at the right and left sides of the partition wall being the center.

Description

  The present invention relates to a heat exchange device that performs heat exchange between outside air and inside air used in an air conditioning system such as a server room.

  Conventionally, a large number of servers are installed in a data center or a server room of a company. In such a server room, the room temperature rises due to the exhaust temperature of the server, and the server may run away or break down due to high temperature heat. For this reason, an air conditioning system that keeps the temperature of the entire room constant is adopted for the server room.

  In this conventional air conditioning system, in order to stabilize the room temperature of the server room, the conditioned air supplied from the air conditioner to the server room flows while contacting the server in the server rack to cool the server. In the conventional air conditioning system, on the contrary, the air heated by the heat of the server is returned from the server room into the air conditioner, cooled by the air conditioner, and supplied to the server room again. ing.

FIG. 7 is an explanatory diagram of the conventional air conditioning system.
The outside air 29 is sucked from the blower 24 and is discharged to the outside through the heat exchanger 21. On the other hand, the inside air 30 circulates in the room through the air handling unit 26. At this time, the inside air 30 heated by the heating element (server rack) 28 is sucked into the heat exchanger 21 by the blower 22 and is cooled by exchanging heat with the outside air, and the cooled inside air is further cooled by the air handling unit 26. Then, it is circulated from under the floor into the room, and the heating element is cooled, that is, the room is cooled. According to the heat exchanger 21, since the outside air is shut off from the inside air to perform heat exchange, the outside air humidity, dust, and corrosive gas contained in the outside air are not taken in. Therefore, the reliability of electronic devices such as servers is improved. Maintained.

  In addition, when the outside air temperature is lower than the temperature of the return air from the server room, such as in winter, heat is exchanged with the outside air to cool the return air without being affected by the outside air humidity, and the heat generated in the server room There has been proposed an air conditioning system that enables effective use of (see Patent Document 1). In order to provide an air conditioning system having a simple structure and high energy saving effect, the system simultaneously performs air conditioning in a server storage space in which a large number of servers are installed and air conditioning in a general room different from the server storage space. The present invention relates to an air conditioning system such as a server room. The system has a sensible heat exchanger for exchanging sensible heat, and a server room air conditioner on the downstream side of the sensible heat exchanger, and air in the server storage space is passed through the sensible heat exchanger. Capture. In addition, a server room air conditioning line that blows air into the server storage space through the server room air conditioner and a general room air conditioner are provided.

  The system takes in the air in the general room through the general room air conditioner, and takes in the outside air through the general room air conditioning line that blows air into the general room and the sensible heat exchanger. Further, the outside air supply line for supplying to the general room air conditioner and the return air returning from the server storage space to the sensible heat exchanger side are bypassed without passing through the sensible heat exchanger, thereby the server room air conditioner. It has server room air conditioning line switching means that can be returned to the machine. Furthermore, an outside air supply line switching means capable of bypassing the intake outside air without passing through the sensible heat exchanger and supplying the bypass air to the general room air conditioner is provided. When the outside air temperature is higher than the temperature of the return air from the server storage space, the air conditioning line switching means and the outside air supply line switching means are switched to the bypass mode side.

  FIG. 8 shows an outline of the conventional example. The server room air conditioning line has the server room air conditioner 103 on the downstream side of the sensible heat exchanger 105. The server room air conditioner 103 is connected to the air outlet 103 a of the server room air conditioner 103, and the air supply port of the blowout duct 117 is connected to the server room air conditioner 103. The blowout duct 117 is blown out into the underfloor space 109 from the blowout opening 117a. On the other hand, the inlet 103 b side of the server room air conditioner 3 is connected to the outlet 105 b of the sensible heat exchanger 105 through a reflux duct 119. Note that air returned from the server chamber 102 into the return duct 118 (hereinafter referred to as “return air”) bypasses the sensible heat exchanger 105 between the reflux duct 119 and the return duct 118. A bypass duct 120 is provided that allows direct delivery to the server room air conditioner 103.

  In the middle of the return duct 118, a motor damper 121 capable of adjusting the amount of air sent from the server room 102 to the sensible heat exchanger 105 and a temperature sensor 127 for detecting the temperature of the return air are provided. Is provided. In the middle of the bypass duct 120, the flow rate of return air that is returned directly from the return duct 118 through the bypass duct 120 into the server room air conditioner 103 without passing through the sensible heat exchanger 105 can be adjusted. A motor damper 122 is provided. A temperature sensor 137 for detecting the temperature of return air sent into the server room air conditioner 103 is provided immediately before the air inlet 103b in the server room air conditioner 103.

  The exhaust port of the return duct 124 in the general room air conditioning line 123 is connected to the air supply port 104a of the general room air conditioner 104, and the intake port of the blowout duct in the general room air conditioning line 123 is connected to the air outlet 104b. It is connected. In addition, a first outside air introduction duct 126a and a second outside air introduction duct 126b constituting an outside air supply line 126 are connected to the air inlet 104c of the general room air conditioner 104. A temperature sensor 128 for detecting the outside air temperature is provided on the suction port side of the outside air supply line 126, and a temperature sensor 138 for detecting the outside air temperature sent into the general room air conditioner 104 is provided on the outlet side. Yes. The first outside air introduction duct 126a passes through the sensible heat exchanger 105 to the air supply port 104a of the general room air conditioner 104, and the second outside air introduction duct 126b does not pass through the sensible heat exchanger 105. It directly communicates with the air supply port 104a of the general room air conditioner 104. A motor damper 139 capable of adjusting the amount of outside air sent into the sensible heat exchanger 105 is provided in the middle of the first outside air introduction duct 126a. A motor damper 140 is provided in the middle of the second outside air introduction duct 126b. The motor damper 140 can adjust the amount of outside air sent directly to the general room air conditioner 104 without passing through the sensible heat exchanger 105.

  In the figure, reference numeral 141 denotes a temperature sensor for detecting the temperature of return air passing through the return duct 124 of the general room air conditioning line 123. Reference numeral 135 includes the bypass duct 120, the motor damper 121, and the motor damper 122, and bypasses return air that returns from the server storage space 106 to the sensible heat exchanger 105 side without passing through the sensible heat exchanger 105. The server room air conditioning line switching means can be returned to the server room air conditioner. Reference numeral 136 is constituted by the first outside air introduction duct 126a, the second outside air introduction duct 126b, the motor damper 139, and the motor damper 140, and bypasses the intake outside air without passing through the sensible heat exchanger 105, thereby the general room air conditioner 104. This is an outside air supply line switching means that can be supplied to the outside.

  Thus, in the server room 102, when the server room air conditioner 103 is driven, the conditioned air from the server room air conditioner 103 is blown into the underfloor space 109 through the blowout duct 117. The conditioned air blown into the underfloor space 109 flows along the lower surface of the floor board, and is further blown out into the server storage space 106 from the discharge ports 114, 114. When the conditioned air blown into the server storage space 106 from the discharge ports 114, 114 ... reaches the racks 113, 113 ..., the racks 113, 113 ... are provided by a ventilation fan (not shown) provided in the racks 113, 113 ... 113 is sucked into the racks 113 and used for cooling the servers in the racks 113, 113,. Further, the air heated while cooling the server is discharged from the racks 113, 113..., Rises, passes through the exhaust holes 115, 115 of the top plate 111, flows in the ceiling space 112, and collects in the suction port 118a. Then, the air is sucked into the return duct 118 through the suction port 118a, discharged as return air, and returned to the server room air conditioner 103. The return air returned to the server room air conditioner 103 is adjusted again in the server room air conditioner 103 and blown out into the underfloor space 109 of the server room 102. Thereby, the inside of the server room 102 can be air-conditioned in a circulating manner.

  On the other hand, in the general room not shown, when the general room air conditioner 104 is driven, the conditioned air from the general room air conditioner 104 is blown into the general room through the blowing duct 124. Further, the air in the general room is returned to the general room air conditioner 104 through the return duct 123, and after being air-conditioned, is returned to the general room through the blowout duct 124 again. The general room is air-conditioned by this circulation.

JP 2010-144949 A Japanese Patent No. 3354882 Japanese Patent No. 3352400

  The present invention relates to an outside air unit having a liquid-gas heat exchanger that allows outdoor air to flow outside, and an inside air unit having a liquid-gas heat exchanger that allows indoor air to flow, centering on an indoor / outdoor partition wall. An object of the present invention is to provide a structure of a heat exchange device that is arranged symmetrically and integrated.

  In order to achieve the above object, the heat exchange apparatus between the inside air and the outside air according to the present invention provides a pair of liquid-gas heat exchangers, in which the internal fluid is liquid and the external fluid is gas, via a partition wall that partitions the interior and exterior The external fluid outside the room is passed through the external fluid of one liquid-gas heat exchanger, the indoor air is passed through the external fluid of the other liquid-gas heat exchanger, and both liquid-gas heat exchanges In a heat exchanger for exchanging heat between the outside air and the inside air by circulating the internal fluid through a pipe connecting the chambers, an outside air unit having a liquid-gas heat exchanger for flowing outside air outside and the room inside air An inside air unit having a liquid-gas heat exchanger through which it flows is installed symmetrically with the partition wall as the center, and both are integrated and arranged.

  Further, according to the present invention, the skeleton of the casing of the outside air unit and the inside air unit is formed in the same shape to the left and right toward the partition wall, and the plurality of through holes are formed through the plurality of through holes formed in the partition wall. The skeleton structure of the outside air unit and the inside air unit is fixed with bolts and nuts at a position, and both are integrated.

  Further, the present invention is a server storage room in which the room has an underfloor space and a ceiling space for recirculation of the inside air, and the outside air unit and the inside air unit are installed on the bottom surface of the server storage room and on the outside external extension surface thereof. The outside air unit and the inside air unit have partition walls on the floor surface of the room and on the outside extension surface of the room, and allow the outside air and the inside air to flow to the liquid-gas heat exchangers through the flow holes provided in the partition walls, respectively. It has the air blower for this.

  Further, the present invention is a server storage room in which the room has an underfloor space and a ceiling space for recirculation of the inside air, and the outside air unit and the inside air unit are stationary on the bottom surface of the server storage room and the outdoor extension surface thereof. The outdoor air unit has a first partition wall on the floor surface of the room and an extended external surface of the room, and allows the external air to flow to the liquid-gas heat exchanger through a flow hole provided in the partition wall. The inside air unit has a second partition above the liquid-gas heat exchanger of the inside air unit, and the inside air is directed downward through a flow hole provided in the second partition. It has the air blower for making it flow through the provided liquid-gas heat exchanger.

  Further, the present invention is characterized in that the pair of liquid-gas heat exchangers are provided at the upper part of the outside air unit and the inside air unit housing, and a work space for maintenance is provided at the lower part of the housing. .

In addition, the present invention is characterized in that the outside air unit and the inside air unit have a blower in the lower part for passing outside air and inside air through the liquid-gas heat exchanger, respectively.
Further, according to the present invention, the pair of liquid-gas heat exchangers is provided at the upper part of the outside air unit and the inside air unit housing, and maintenance work is performed between the pair of liquid-gas heat exchangers and the blower. It is characterized by providing a space.

  In addition, according to the present invention, the outside air unit and the blower included in the inside air unit can flow in both directions and are arranged in the same shape to the left and right toward the partition wall. The inside air unit is characterized in that the inside air flows through the blower in a direction from the upper part to the lower part.

  In addition, the present invention is characterized in that the outside air unit and the inside air unit have a partition at the lower part, and a blower is disposed at a position where the outside air and the inside air flow from a through hole provided in the partition.

  According to the heat exchange device of the present invention, an outdoor air unit having a liquid-gas heat exchanger that allows outdoor air to flow outside, and an indoor air unit having a liquid-gas heat exchanger that allows indoor air to flow indoors It can be integrated by arranging symmetrically around the outer partition wall.

FIG. 1 shows an overall structural diagram of an air conditioning system including a heat exchange device of the present invention. FIG. 2 shows an enlarged view of the heat exchange device of the present invention. FIG. 3 shows another embodiment of the heat exchange device of the present invention. FIG. 4 shows still another embodiment of the heat exchange device of the present invention. FIG. 5 shows still another embodiment of the heat exchange device of the present invention. FIG. 6 is an external view of the outside air unit and the inside air unit. FIG. 7 is an explanatory diagram of a conventional air conditioning system. FIG. 8 is an explanatory diagram of another conventional air conditioning system.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an overall structural diagram of an air conditioning system including a heat exchange device of the present invention. In FIG. 2, the enlarged view of the heat exchange apparatus of this invention is shown.

  In FIG. 2, the outside air unit 2 and the inside air unit 3 have flow holes in the upper and lower parts of the housing, respectively. The liquid-gas heat exchanger 31 is installed in the vicinity of the flow hole in the upper part of the outside air unit 2. The liquid-gas heat exchanger 32 is installed in the vicinity of the flow hole in the upper part of the inside air unit 3. Both the liquid-gas heat exchanger 31 and the liquid-gas heat exchanger 32 are preferably installed in the through holes so that air does not leak from the casing. If a liquid-gas heat exchanger is installed in the flow hole so that air does not leak from the housing, warm air and cold air are not mixed, so the room can be cooled efficiently.

  The liquid-gas heat exchanger 31 and the liquid-gas heat exchanger 32 are connected by pipes 21 and 22. Between the pair of liquid-gas heat exchangers 31, 32, the liquid 23 flows through the piping by the circulation pump 4, and liquid-gas heat exchange is performed by the flow.

In FIGS. 1 and 2, the outside air unit 2 and the inside air unit 3 are installed to face each other via a partition wall 20. In this embodiment, the partition wall 20 is an indoor / outdoor wall.
In FIG. 2, the blower 6 that blows air in one direction is attached so that air does not leak into the flow holes 38 and 39 formed in the partition wall 36 provided in the lower part of the outside air unit 2 and the inside air unit 3. If the blower 6 is installed in the flow holes 38 and 39 so that air does not leak from the housing, the warm air and the cool air are not mixed, so that the room can be efficiently cooled.

  The partition wall 36 is located above the flow holes in the lower part of the casings of the outside air unit 2 and the inside air unit 3 and is located below the liquid-gas heat exchanger 31 and the liquid-gas heat exchanger 32. In FIG. 2, the outside air is sucked from a through hole in the lower part of the outside air unit 2 and blown upward from below the partition wall 39, as indicated by a wind flow 33 in the figure, and the liquid-gas heat exchanger 31. Is discharged outside the housing. The inside air is sucked from the flow hole at the bottom of the inside air unit 3 as shown by the wind flow 34 in the figure, blown upward from the bottom of the partition wall 39, and discharged from the liquid-gas heat exchanger 32 to the outside. Is done. Reference numeral 37 denotes a bottom surface of the outside air unit 2 and the inside air unit 3.

  As in the conventional example of FIG. 7, in FIG. 1, the outside air 12 is sucked by a blower 6 that blows air in one direction on the outside air unit 2 side, and passes through the liquid-gas heat exchanger 1 on the outside air unit 2 side. 14 is discharged. On the other hand, the inside air 13 is guided to the inside air unit 3 from the back of the ceiling configured as a double ceiling, and the inside air 13 discharged from the inside air unit 3 passes through the air handling unit 9 and passes under the floor configured as a double floor. Circulate the room. At this time, the inside air 13 heated by the heating element (server rack) 11 is sucked by the blower 6 that blows in one direction located in the lower part on the inside air unit 3 side, and the liquid-gas heat exchanger 1 on the inside air unit 3 side is sucked. Pass through. The inside air 13 is cooled by heat exchange with outside air by a pair of liquid-gas heat exchangers 1 composed of the outside air unit 2 and the inside air unit 3, and the cooled inside air is further cooled by the air handling unit 9. .

  In FIG. 1, the air handling unit 9 is coupled to the refrigerator 7 via pipes 24 and 25. The piping 24 is provided with an expansion valve 8, and indoor air (inside air) is cooled by the action of a refrigerant flowing through the piping using the expansion valve 8.

  And the inside air 13 is circulated from under the floor to the room, and the heating element is cooled, that is, the room is cooled. In addition, according to this pair of liquid-gas heat exchangers 1, since the outside air is shut off from the inside air and heat exchange is performed, the outside air humidity, dust, and corrosive gas contained in the outside air are not taken in. Equipment reliability is maintained.

  A feature of the present invention is that an outdoor air unit having a liquid-gas heat exchanger that allows outdoor air to flow outside, and an indoor air unit that has a liquid-gas heat exchanger that allows indoor air to flow indoors and outdoors. It is in the point which was arrange | positioned symmetrically centering on the partition wall, and was integrated. It is preferable that the outside air unit and the inside air unit have substantially the same size as the mounting area of the unit housing to the partition wall.

  If such a structure is adopted, the installation of the heat exchange device can be realized in a compact manner. For example, the duct portion can be reduced as compared with the conventional systems of FIGS. As a result, pressure loss due to duct resistance can be reduced. In this case, the skeletons of the casings of the outside air unit 2 and the inside air unit 3 are formed in the same shape to the left and right toward the wall, and the outside air is positioned at the plurality of through holes through the plurality of through holes formed in the wall. A structure in which the unit 2 and the inside air unit 3 are fixed with bolts and nuts is preferable.

  In addition, when such a structure is adopted, a plurality of through holes are made in the partition wall, the inside air unit and the outside air unit are aligned from the inside and outside of the room, and are fixed with bolts, nuts, etc. It is easy and saves troublesome piping work. Further, by sharing the housings of the inside air unit and the outside air unit, it is possible to use a housing having a skeleton having substantially the same structure, and to reduce the manufacturing cost for manufacturing the heat exchange device between the inside air and the outside air. Alternatively, there is a merit that the manufacturing cost can be further reduced by sharing the liquid-gas heat exchanger main body.

  The room 17 is a server storage room having an underfloor space and a ceiling space for recirculation of the inside air, and the outside air unit 2 and the inside air unit 3 are installed on the bottom surface of the server storage room and its external extension surface. In FIG. 1, the outside air unit 2 and the inside air unit 3 are drawn in the form of floating in the drawing, but the bottom surface 37 of the outside air unit 2 and the inside air unit 3 shown in FIG. It is desirable to be on the same plane as the bottom surface 15 of the server storage room. Moreover, it is preferable that the partition 36 (FIG. 2) of the outside air unit 2 and the inside air unit 3 is located on the same plane as the indoor floor surface 16 of FIG. In this case, a structure in which a blower for passing outside air and inside air to the liquid-gas heat exchanger is provided in the partition 36 of the outside air unit 2 and the inside air unit 3 is convenient in design and construction. .

  When such a structure is adopted, the indoor and outdoor floor surfaces can be used in common, so that the installation work can be facilitated. Furthermore, since the outside air unit and the inside air unit are installed in a stationary manner on the common bottom surface, when positioning from both of the partition walls 20, the fixing positions (heights, etc.) of the bolts and nuts of both units There is an advantage that can be set easily. Further, the structure for blowing the circulating air to the bottom of the server storage room is simplified.

  At this time, since the liquid-gas heat exchanger 1 is housed in the upper part of each unit and the blower 6 is housed in the lower part of each unit, the center of the outside air unit and the inside air unit, for example, in the lower part of the center part, It is possible to secure a space for workers to work for maintenance.

  FIG. 3 shows another embodiment of FIG. In FIG. 3, the blower 51 of the outside air unit is attached in such a direction as to send wind from below to above through the partition wall 36. On the other hand, the blower 53 is attached in such a direction as to send air from below the partition wall 36 in the inside air unit 52 to the outside of the unit 52. The partition wall 36 in the inside air unit 52 may be omitted. The blower 53 is attached so that air does not leak into the flow hole for discharging the inside air from the inside air unit 52. 3 differs from FIG. 1 in that a blower 53 that blows air in one direction is provided in the direction in which the inside air is discharged from the lower part of the inside air unit 52, so that the air flow path in the inside air unit 52 is directed downward from above. It is that. At this time, the inside air heated by the heating element (server rack) 11 is discharged by the blower 53 that blows in one direction located in the lower part of the inside air unit 52, so that the liquid-gas heat exchanger 1 of the inside air unit 52 is discharged. Pass through. In this way, the air flow in the inside air unit 52 is such that the warm air heated by the heating element is upward and the air cooled by the liquid-gas heat exchanger flows downward. The flow will be in line with natural phenomena without countering.

  FIG. 4 is also another embodiment of FIG. In FIG. 4, the blower 55 of the outside air unit is attached in such a direction as to send wind from below to above via a partition wall 36 at the bottom of the outside air unit. On the other hand, the blower 54 of the inside air unit is attached in such a direction as to send air from above the partition wall 58 to below the inside air unit 56. The difference from FIG. 1 is that the partition wall 58 is provided in the upper part of the liquid-gas heat exchanger of the inside air unit, and the blower 54 that blows air in one direction from the upper part of the inside air unit 52 is provided. That is, the air flow path in the unit 56 is directed downward from above. At this time, the inside air heated by the heating element (server rack) 11 is sucked by the blower 54 that blows in one direction located above the inside air unit 56 and passes through the liquid-gas heat exchanger 1 of the inside air unit 56. In order to send the inside air sucked from the upper part of the inside air unit 52 to the liquid-gas heat exchanger 1 of the inside air unit 56, the inside air unit 56 has a partition wall 38 having a flow hole above the liquid-gas heat exchanger of the inside air unit. . The inside air flows downward through the flow hole provided in the partition wall 38 by the function of the blower 54, passes through the liquid-gas heat exchanger 1, and is discharged to the outside of the inside air unit. In this way, the air flow in the inside air unit 56 is warm air heated by the heating element, and the air cooled by the liquid-gas heat exchanger flows downward, which is against natural convection. The flow will be in line with natural phenomena without any problems.

  FIG. 5 is another embodiment of FIG. The difference from FIG. 1 is that the air blower 61 of the outside air unit forms a flow path upward, and the blower of the inside air unit forms a flow path downward, using a blower 61 that can change the flow method in both directions. Is a point.

  If such a type that allows flow in both directions is used for the blower, there is an advantage that it can be used in the same manner as in FIG. Use of the blower 61 that can flow in both directions is preferable because the casing of the outside air unit and the casing of the inside air unit can have exactly the same structure, and the manufacturing cost can be reduced.

  FIG. 6 is an external view of the overall structure of the outside air unit and the inside air unit common to FIGS. 1, 3, 4, and 5. FIG. In any configuration, since the liquid-gas heat exchange device 1 is provided at the upper part of the unit housing and the inspection port 71 is provided at the lower side, a sufficient space for repairing the failure in the unit can be secured. For example, if the maintenance person thrusts the neck from the inspection port 71 during maintenance of the equipment, a sufficient space can be secured in the unit as a space for repairing the liquid-gas heat exchanger 1 or the blower 6 by failure. So convenient.

In particular, when configured as shown in FIG. 5, the present invention exhibits a remarkable effect.
The outside air unit and the inside air unit have flow holes in the upper and lower parts of the housing, respectively. The liquid-gas heat exchanger is installed in the vicinity of the flow hole in the upper part of the outside air unit and the inside air unit. The pair of liquid-gas heat exchangers in the outside air unit and the inside air unit are preferably installed in the through holes so that air does not leak from the housing. If a liquid-gas heat exchanger is installed in the flow hole so that air does not leak from the housing, warm air and cold air are not mixed, so the room can be cooled efficiently.

  The pair of liquid-gas heat exchangers are connected by piping. Between the pair of liquid-gas heat exchangers, the liquid flows through the piping by a circulation pump, and the liquid-gas heat exchange is performed by the flow. The outside air unit and the inside air unit are installed to face each other via the partition wall 20. In this embodiment, the partition wall 20 is an indoor / outdoor wall.

  The blower 61 capable of blowing air in both directions is attached so that air does not leak into the flow holes formed in the partition wall 36 provided in the lower part of the outside air unit and the inside air unit. If the blower 61 is installed in the flow hole so that air does not leak from the housing, the warm air and the cool air are not mixed, so that the room can be efficiently cooled. The partition wall is located above the flow hole in the lower part of the casing of the outside air unit and the inside air unit, and is located below the pair of liquid-gas heat exchangers. Or if the air blower 61 is comprised as what has a substantially the same area as the vertical direction cross-sectional area of each housing | casing, an outside air unit and an inside air unit will become unnecessary.

  The blower 61 of the outside air unit operates so that outside air flows upward inside the outside air unit. The blower 61 of the inside air unit operates so that the inside air flows downward inside the inside air unit. It is preferable to use such a type that allows air flow in both directions because the casing of the outside air unit and the casing of the inside air unit can have exactly the same structure, and the manufacturing cost can be reduced.

  It is preferable that the outside air unit and the inside air unit have substantially the same size as the mounting area of the unit housing to the partition wall. If such a structure is adopted, the installation of the heat exchange device can be realized in a compact manner. For example, compared with the conventional system of FIG. 7 and FIG. 8, a duct part can be reduced and it becomes possible to reduce the pressure loss by duct resistance.

  The skeleton of the casing of the outside air unit and the inside air unit is formed in the same shape to the left and right toward the wall, and the outside air unit 2 and the inside air unit at the positions of the plurality of through holes through the plurality of through holes drilled in the wall. The structure which fixes 3 with a volt | bolt nut is preferable. If such a structure is adopted, a plurality of through holes are made in the partition wall, the inside air unit and the outside air unit are aligned from the inside and outside, and fixed with bolts and nuts, etc., so that the installation work can be facilitated. This saves troublesome piping work. Further, by sharing the housings of the inside air unit and the outside air unit, it is possible to use a housing having a skeleton having substantially the same structure, and to reduce the manufacturing cost for manufacturing the heat exchange device between the inside air and the outside air. Alternatively, there is a merit that the manufacturing cost can be further reduced by sharing the liquid-gas heat exchanger main body.

  In FIG. 5, the outside air unit and the inside air unit are drawn in the form of floating in the drawing, but actually, the bottom surface 37 of the outside air unit 2 and the inside air unit 3 shown in FIG. It is desirable to be on the same plane as the indoor bottom surface 15. When such a structure is adopted, the indoor and outdoor floor surfaces can be used in common, so that the installation work can be facilitated. Furthermore, since the outside air unit and the inside air unit are installed in a stationary manner on the common bottom surface, when positioning from both of the partition walls 20, the fixing positions (heights, etc.) of the bolts and nuts of both units There is an advantage that can be set easily.

  For the outside air unit and the inside air unit, a liquid-gas heat exchanger is installed near the through hole at the top of each unit. In the outside air unit and the inside air unit, the blower 61 is installed above the flow hole in the lower part of each unit. Therefore, it is possible to secure a space where an operator works for maintenance, for example, at the lower part of the central portion of the outside air unit and the inside air unit.

  As described above, the heat exchanging apparatus of the present invention can reduce the manufacturing cost by using a housing having a skeleton having substantially the same structure as the heat exchanging apparatus between inside air and outside air. Further, the installation of the heat exchange device is made compact, and the outside air unit and the inside air unit are fixed with bolts and nuts at the positions of the plurality of through holes through the plurality of through holes formed in the wall, thereby reducing the construction cost. In addition, since the installation work can be facilitated, industrial applicability is high.

1 Liquid-Gas Heat Exchanger 4 Circulation Pump 6 Blower 7 Refrigerator 9 Air Handling Unit 11 Heating Element (Server Rack)
21 Heat Exchanger 22 Blower 24 Blower 25 Refrigerator 26 Air Handling Unit 28 Heating Element (Server Rack)
31 Heat exchanger 35 Circulation pump

Claims (9)

A pair of liquid-gas heat exchangers, in which the internal fluid is liquid and the external fluid is gas, are arranged via a partition wall that partitions the interior and exterior, and the outdoor air flows outside the outdoor fluid of one liquid-gas heat exchanger. And let the outside air of the other liquid-gas heat exchanger flow through the room's inside air, and circulate the internal fluid through a pipe connecting both the liquid-gas heat exchangers to heat the outside air and the inside air. In the heat exchange device that performs the exchange,
An outdoor air unit having a liquid-gas heat exchanger that allows outdoor air to flow outside and an indoor air unit having a liquid-gas heat exchanger that allows indoor air to flow through it are installed symmetrically about the partition wall, A heat exchange device between inside air and outside air, characterized in that both are integrated.   The outside air unit and the frame of the inside air unit are formed in the same shape left and right toward the partition wall, and the outside air unit and the plurality of through holes are formed through the plurality of through holes formed in the partition wall. 2. The heat exchange apparatus between the inside air and the outside air according to claim 1, wherein the skeleton structure of the inside air unit is fixed with bolts and nuts to integrate both.   The room is a server storage room having an underfloor space and a ceiling space for internal air circulation, and the external air unit and the internal air unit are installed on a bottom surface of the server storage room and an outdoor external extension surface thereof, and the external air unit and the internal air The unit has a partition on the floor surface in the room and on the outside extension surface of the room, and has a blower for allowing outside air and inside air to flow through the liquid-gas heat exchanger through the flow holes provided in the partition. The heat exchange device between the inside air and the outside air according to claim 1 or 2.   The room is a server storage room having an underfloor space and a ceiling space for recirculation of the inside air, and the outside air unit and the inside air unit are installed in a stationary manner on the bottom surface of the server storage room and on the outside external extension surface thereof, The unit has a first partition on the floor surface in the room and on the outside extension surface of the room, and a first blower for allowing outside air to flow through the liquid-gas heat exchanger through a flow hole provided in the partition. And the inside air unit has a second partition above the liquid-gas heat exchanger of the inside air unit, and a liquid-gas in which the inside air is provided in a flow hole provided in the second partition. 3. The heat exchange apparatus between the inside air and the outside air according to claim 1, further comprising a blower for passing the heat through the heat exchanger.   5. The pair of liquid-gas heat exchangers is provided at an upper part of the outside air unit and the inside air unit casing, and a maintenance work space is provided at the lower part of the casing. The heat exchange device according to any one of the above.   3. The heat exchange device between the inside air and the outside air according to claim 1 or 2, wherein the outside air unit and the inside air unit have a blower at a lower part for passing the outside air and the inside air through the liquid-gas heat exchanger, respectively. .   The pair of liquid-gas heat exchangers are provided in the upper part of the outside air unit and the inside air unit housing, and a work space for maintenance is provided between the pair of liquid-gas heat exchangers and the blower. The heat exchange device between the inside air and the outside air according to claim 6.   The outside air unit and the blower of the inside air unit can flow in both directions and are arranged in the same shape to the left and right toward the partition wall, the outside air unit allows the outside air to flow in the direction from the bottom to the top, and the inside air unit is The heat exchange apparatus between the inside air and the outside air according to claim 7, wherein the inside air flows in a direction from the upper part to the lower part by a blower. 9. The space between the inside air and the outside air according to claim 8, wherein the outside air unit and the inside air unit have a partition wall at a lower portion, and a blower is disposed at a position for allowing the outside air and the inside air to flow through a flow hole provided in the partition wall. Heat exchange equipment.