Heat exchange device

Abstract

Provided is an air-cooled heat pump chiller (1) comprising: a refrigerant system having a compressor (5) that compresses a flammable refrigerant; a machine chamber (21) that forms a first space (S1) that accommodates the compressor (5); an air-cooled heat exchanger (12) that exchanges heat between the refrigerant and air and is disposed above the machine chamber (21) in the vertical direction (VD); a control device (30) that controls the compressor (5); a control chamber (22) that accommodates the control device (30) and forms a second space (S2) isolated from the first space (S1), and is disposed at a position so as to protrude in the horizontal direction (HD) with respect to the air-cooled heat exchanger (12); communication parts (23, 24) that communicate the first space (S1) and the second space (S2) and are formed in a tubular shape; and an intake fan (25) and an exhaust fan (26) that generate a flow of air guided from the second space (S2) to the first space (S1) via the communication parts (23, 24).

Description

heat exchange equipment

[0001] The present disclosure relates to a heat exchange device.

[0002] Conventionally, there has been known a heat pump having an outdoor unit including a refrigerant circulation path, a refrigerant equipment chamber that houses a compressor, a working chamber that houses a working device that operates the refrigerant equipment, and a heat exchanger chamber that houses a heat exchanger that exchanges heat between the refrigerant and air (see, for example, Patent Document 1). The heat pump disclosed in Patent Document 1 is configured so that ventilation air flows inside the outdoor unit from the working chamber to the refrigerant equipment chamber.

[0003] JP 2016-38107 A

[0004] However, in the outdoor unit disclosed in Patent Document 1, the working chamber, which could become an ignition source in the event of a flammable refrigerant leak, is located horizontally adjacent to the refrigerant equipment chamber and below the heat exchanger chamber. Therefore, although the outdoor unit is configured to allow ventilation air to flow, if a flammable refrigerant leaks from a refrigerant device such as a compressor installed in the refrigerant equipment chamber, the refrigerant may fill the refrigerant equipment chamber and flow into the adjacent working chamber, potentially causing a fire.

[0005] The present disclosure has been made in consideration of the above circumstances, and aims to provide a heat exchange device that can prevent flammable refrigerant from flowing into a control chamber and igniting when the refrigerant leaks into a machine chamber that houses a compressor.

[0006] In order to solve the above problems, the heat exchanger of the present disclosure employs the following measures: A heat exchanger according to one aspect of the present disclosure includes a refrigerant system having a compressor that compresses a flammable refrigerant and circulates the refrigerant, a machine room that forms a first space and houses the compressor, an air-cooled heat exchanger that performs heat exchange between the refrigerant and air and is positioned vertically above the machine room, a control device that controls the compressor, a control room that houses the control device, forms a second space isolated from the first space, and is positioned at a position that protrudes horizontally from the air-cooled heat exchanger, a tubular communication part that communicates the first space with the second space, and a blower that generates a flow of air that is guided from the second space to the first space via the communication part.

[0007] According to the present disclosure, a heat exchange device can be provided that can prevent flammable refrigerant from leaking into a machine room that houses a compressor and igniting the refrigerant by flowing into a control room.

[0008] It is a system diagram showing a schematic configuration of an air-cooled heat pump chiller according to an embodiment of the present disclosure. It is a front view of the air-cooled heat pump chiller shown in Figure 1. It is a perspective view of the air-cooled heat pump chiller shown in Figure 1. It is a block diagram showing a control configuration of the air-cooled heat pump chiller. It is a flowchart showing the operation of the air-cooled heat pump chiller.

[0009] An air-cooled heat pump chiller (heat exchange device) 1 according to an embodiment of the present disclosure will be described below with reference to the drawings. Fig. 1 is a system diagram showing a schematic configuration of the air-cooled heat pump chiller 1 according to an embodiment of the present disclosure. As shown in Fig. 1, the air-cooled heat pump chiller 1 of this embodiment includes a refrigerant system R1 and a water system W.

[0010] The refrigerant system R1 is a refrigerant circuit that circulates a refrigerant and includes a compressor 5, an oil separator 6, a check valve 7, a four-way valve 8, a water heat exchanger 9, a receiver 10, an electronic expansion valve 11, an air-cooled heat exchanger 12, and a gas-liquid separator 13. The air-cooled heat exchanger 12 is provided with a cooling fan 12a.

[0011] The refrigerant circulated by the refrigerant system R1 is, for example, propane (R290), a highly flammable hydrocarbon. Alternatively, difluoromethane (R32), which is slightly flammable, may be used as the refrigerant.

[0012] The compressor 5 sucks in gas refrigerant, compresses it, and discharges it. The oil separator 6 separates the oil from the refrigerant discharged from the compressor 5 and returns it to the compressor 5. The check valve 7 prevents backflow of the compressed refrigerant. The four-way valve 8 is a valve that selects between two operation modes: a heating operation mode in which the refrigerant discharged from the compressor 5 is sent to the water heat exchanger 9, and a cooling operation mode in which the refrigerant is sent to the air-cooled heat exchanger 12. In Figure 1, the four-way valve 8 is set to the heating operation mode.

[0013] The water heat exchanger 9 is a heat exchanger that condenses the compressed refrigerant in the heating operation mode and vaporizes the condensed liquid refrigerant in the cooling operation mode, thereby exchanging heat between the refrigerant and water. The water heat exchanger 9 uses the heat of condensation or the heat of vaporization to heat or cool the water flowing through the water system W to generate hot water for heating or cold water for cooling.

[0014] The receiver 10 is a tank that stores a predetermined amount of condensed liquid refrigerant. The electronic expansion valve 11 reduces the pressure of the condensed refrigerant to promote evaporation. The air-cooled heat exchanger 12 is a heat exchanger that vaporizes the condensed refrigerant using outside air blown by a cooling fan 12a in the heating operation mode and condenses the compressed refrigerant in the cooling operation mode. The gas-liquid separator 13 separates the refrigerant before it is drawn into the compressor 5 and draws only the gas refrigerant into the compressor 5.

[0015] The water system W has a water inlet 15, a water pump 16, a water outlet 17, and water piping 18. The water system W is a system in which water that flows in through the water inlet 15 is discharged from the water outlet 17. The water pump 16 is connected to the water piping 18 extending from the water inlet 15. The water piping 18 guides the water that is discharged from the water pump 16 and passes through the inside of the water heat exchanger 9 to the water outlet 17. The water pump 16 is disposed below a control room 22, which will be described later, in the vertical direction VD.

[0016] During heating operation, the refrigerant compressed by the compressor 5 of the refrigerant system R1 flows to the water heat exchanger 9 and exchanges heat with water flowing through the water pipe 18. The water that has exchanged heat with the high-temperature compressed refrigerant in the water heat exchanger 9 becomes warm water or hot water, and is supplied from the water outlet 17 to a predetermined heating location or hot water supply location.

[0017] During cooling operation, the high-temperature, high-pressure refrigerant compressed by the compressor 5 flows through the four-way valve 8 to the air-cooled heat exchanger 12, where it exchanges heat with the air as outside air is blown by the cooling fan 12a, condenses, and liquefies, then flows through the receiver 10 to the water heat exchanger 9, where it exchanges heat with water flowing in the water piping 18 of the water system W, and evaporates. The water that has exchanged heat with the low-temperature refrigerant in the water heat exchanger 9 becomes cold water, and is supplied from the water outlet 17 to the desired cooling location.

[0018] Next, the structure of the air-cooled heat pump chiller 1 will be described with reference to Figures 2 and 3. Figure 2 is a front view of the air-cooled heat pump chiller 1 shown in Figure 1. Figure 3 is a perspective view of the air-cooled heat pump chiller 1 shown in Figure 1.

[0019] As shown in Figures 2 and 3, the air-cooled heat pump chiller 1 includes a machine room 21, a control room 22, an air-cooled heat exchanger 12, a control device 30, a communication section 23, a communication section 24, an intake fan (first blower) 25, an exhaust fan (second blower) 26, and a refrigerant detection section 27.

[0020] The machine chamber 21 is a box-shaped housing that forms a first space S1 that houses refrigerant equipment including the compressor 5. In the machine chamber 21, a part of the refrigerant system R1 is arranged.

[0021] The control room 22 is a box-shaped housing that forms a second space S2 that houses a control device 30 that controls each part of the air-cooled heat pump chiller 1, including the compressor 5 and the water pump 16. The second space S2 formed by the control room 22 is a space isolated from the first space S1. The control room 22 is disposed in a position that protrudes in the horizontal direction HD from the air-cooled heat exchanger 12. The control room 22 is disposed in an area above the machine room 21 in the vertical direction VD and that overlaps with the air-cooled heat exchanger 12.

[0022] The air-cooled heat exchanger 12 is a device that exchanges heat between a refrigerant and air and is disposed above the machine room 21 in the vertical direction VD.

[0023] The communication part 23 is a tubular member that connects the first space S1 and the second space S2. The communication part 23 accommodates therein a cable 31 having a control signal line for transmitting a control signal from the control device 30 to the compressor 5.

[0024] The communication part 24 is a tubular member that connects the first space S1 and the second space S2 and accommodates therein a cable 32 having a control signal line for transmitting a control signal from the control device 30 to the refrigerant equipment.

[0025] The suction fan 25 is a device that generates a flow of air that is guided from the second space S2 to the first space S1 via the communication portions 23 and 24. The control room 22 is provided with an air intake port 22a that draws air from an external space S0, which is isolated from the first space S1 and the second space S2, into the second space S2. The suction fan 25 draws air from the external space into the second space S2 and guides the drawn air to the communication portions 23 and 24. The flow of air drawn by the suction fan 25 and guided to the communication portions 23 and 24 is also used to cool the control device 30.

[0026] The exhaust fan 26 is a device that generates a flow of air that is guided from the second space S2 to the first space S1 via the communication portions 23 and 24. The machine room 21 is provided with an exhaust port 21a that exhausts air from the first space S1 to the external space S0. The exhaust fan 26 exhausts air from the first space S1 to the external space S0.

[0027] Refrigerant detection unit 27 is a device housed in machine room 21 and detects refrigerant leakage into first space S1. Refrigerant detection unit 27 transmits a detection signal indicating refrigerant leakage to control device 30 when the refrigerant concentration in first space S1 reaches or exceeds a predetermined concentration, for example.

[0028] Next, the operation of the intake fan 25 and the exhaust fan 26 of the air-cooled heat pump chiller 1 will be described with reference to Figures 4 and 5. Figure 4 is a block diagram showing the control configuration of the air-cooled heat pump chiller 1. Figure 5 is a flowchart showing the operation of the air-cooled heat pump chiller 1.

[0029] 4, in the air-cooled heat pump chiller 1, the control device 30 is configured to be able to transmit control signals to control the refrigerant equipment including the compressor 5, the suction fan 25, and the exhaust fan 26. The control device 30 is also configured to be able to receive a detection signal from the refrigerant detection unit 27 indicating that refrigerant has leaked.

[0030] 5 , after the air-cooled heat pump chiller 1 starts operating, the control device 30 controls the suction fan 25 to start operating in step S101. The suction fan 25 draws air from the air intake port 22a to cool the control device 30, and guides the air that has cooled the control device 30 to the communication parts 23 and 24.

[0031] In step S102, the control device 30 determines whether or not a detection signal indicating a refrigerant leak has been received from the refrigerant detection unit 27, and if YES, proceeds to step S103, and if NO, proceeds to step S104.

[0032] In step S103, the control device 30 controls the exhaust fan 26 to start operating in order to forcibly discharge the refrigerant that has leaked into the first space S1 into the external space S0, since the refrigerant detection unit 27 has detected that the refrigerant has leaked into the first space S1 of the machine room 21.

[0033] In step S104, the control device 30 determines whether a stop instruction has been issued to stop the operation of the air-cooled heat pump chiller 1, and if YES, proceeds to step S105, and if NO, proceeds to step S102.

[0034] In step S105, the control device 30 controls the exhaust fan 26 to stop operating. In step S106, the control device 30 controls the intake fan 25 to stop operating, and then ends the processing of this flowchart.

[0035] The air-cooled heat pump chiller 1 of the present embodiment described above provides the following functions and effects.

[0036] In the air-cooled heat pump chiller 1 of this embodiment, if refrigerant leaks from the machine chamber 21 that forms the first space S1 housing the compressor 5 that compresses a flammable refrigerant, the refrigerant may fill the machine chamber 21, enter the tubular communicating parts 23, 24 that extend from the first space S1, and be guided from the communicating parts 23, 24 to the control chamber 22 that forms the second space S2 housing the control device 30 that controls the compressor 5. If an ignition phenomenon such as a spark occurs in the control device 30 housed in the control chamber 22, the flammable refrigerant may ignite.

[0037] According to the air-cooled heat pump chiller 1 of this embodiment, the intake fan 25 and the exhaust fan 26 are provided to generate a flow of air that is guided from the second space S2 to the first space S1 through the communication parts 23, 24. Therefore, even if a flammable refrigerant leaks in the first space S1, the air flow prevents the refrigerant from entering the communication parts 23, 24 from the first space S1. The refrigerant is also prevented from entering the second space S2 from the communication parts 23, 24.

[0038] Furthermore, in the air-cooled heat pump chiller 1 of this embodiment, the control room 22, which may be an ignition source for a flammable refrigerant, is located away from the machine room 21 so as to protrude further in the horizontal direction HD than the air-cooled heat exchanger 12, which is located above the machine room 21 in the vertical direction VD. Therefore, even if the amount of air blown by the suction fan 25 and the exhaust fan 26 is insufficient, it is possible to prevent the refrigerant from entering the control room 22 through the communication parts 23, 24.

[0039] According to the air-cooled heat pump chiller 1 of this embodiment, the exhaust fan 26 exhausts air from the first space S1 to the external space S0, and the intake fan 25 draws air from the external space S0 into the second space S2, thereby generating an air flow that is guided from the second space S2 to the first space S1 through the communication parts 23, 24, and preventing the refrigerant from flowing into the control chamber 22 and igniting.

[0040] According to the air-cooled heat pump chiller 1 of this embodiment, the refrigerant detection unit 27 starts the operation of discharging air from the first space S1 to the external space S0 in response to detecting that refrigerant has leaked into the first space S1, thereby ensuring that refrigerant is discharged from the first space S1 in response to the leakage of refrigerant into the first space S1.

[0041] According to the air-cooled heat pump chiller 1 of this embodiment, the cables 31, 32 carrying the control signal lines can be protected by being housed inside the communication sections 23, 24. The first space S1 and the second space S2 are connected to each other by the communication sections 23, 24 for housing the cables 31, 32, which allows refrigerant to flow from the first space S1 into the second space S2, but the suction fan 25 and the exhaust fan 26 generate an air flow from the second space S2 toward the first space S1, preventing the refrigerant from flowing into the control chamber 22 and igniting.

[0042] According to the air-cooled heat pump chiller 1 of this embodiment, the control chamber 22 is positioned in an area above the machine chamber 21 in the vertical direction VD, which more reliably prevents flammable refrigerant, which has a higher specific gravity than air, from entering the control chamber 22 from the machine chamber 21.

[0043] According to the air-cooled heat pump chiller 1 of this embodiment, the control room 22 is positioned in an area that overlaps with the air-cooled heat exchanger 12 in the vertical direction VD, so that the operator can easily perform maintenance on the control device 30 housed in the control room 22.

[0044] In the air-cooled heat pump chiller 1 of this embodiment, the water pump 16 is disposed below in the vertical direction VD the control room 22 that houses the control device 30 that controls the water pump 16. Therefore, if water leaks from the water pump 16 or its surroundings, it is possible to appropriately prevent water from adhering to the control device 30.

[0045] [Other Embodiments] In the above description, the air-cooled heat pump chiller 1 of this embodiment is described as including both the suction fan 25 and the exhaust fan 26 as a blower that generates a flow of air that is guided from the second space S2 to the first space S1 via the communication portion 23 and the communication portion 24. However, other embodiments are also possible. For example, the air-cooled heat pump chiller 1 may be configured to include only one of the suction fan 25 and the exhaust fan 26.

[0046] The heat exchange device (1) according to each of the above-described embodiments can be understood, for example, as follows.

[0047] The heat exchange device according to the first aspect of the present disclosure includes a refrigerant system (R1) having a compressor (5) that compresses a flammable refrigerant and circulates the refrigerant, a machine room (21) that forms a first space (S1) to accommodate the compressor, an air-cooled heat exchanger (12) that performs heat exchange between the refrigerant and air and is arranged vertically above the machine room, a control device (30) that controls the compressor, a control room (22) that accommodates the control device and forms a second space (S2) isolated from the first space and is arranged in a position that protrudes horizontally from the air-cooled heat exchanger, tubular communication sections (23, 24) that communicate the first space with the second space, and a blower section (25, 26) that generates a flow of air that is guided from the second space to the first space via the communication section.

[0048] In the heat exchange device according to the first aspect of the present disclosure, if a refrigerant leaks from a machine chamber that defines a first space and houses a compressor that compresses a flammable refrigerant, the refrigerant may fill the machine chamber, enter a tubular communication portion from the first space, and be guided from the communication portion to a control chamber that defines a second space and houses a control device that controls the compressor. If an ignition phenomenon such as a spark occurs in the control device housed in the control chamber, the flammable refrigerant may ignite.

[0049] According to the heat exchange device of the first aspect of the present disclosure, the heat exchange device includes an air blower that generates an air flow that is guided from the second space through the communication portion to the first space, so that even if a flammable refrigerant leaks in the first space, the air flow prevents the refrigerant from entering the communication portion from the first space and from entering the second space from the communication portion.

[0050] Furthermore, in the heat exchanger according to the first aspect of the present disclosure, the control chamber, which may be an ignition source for the flammable refrigerant, is located farther from the machine chamber than the air-cooled heat exchanger, which is located vertically above the machine chamber, so that the control chamber protrudes horizontally further from the machine chamber than the air-cooled heat exchanger, which is located vertically above the machine chamber. Therefore, even if the volume of air blown by the blower is insufficient, the refrigerant can be prevented from entering the control chamber through the communication part.

[0051] The heat exchange device according to a second aspect of the present disclosure is the first aspect, further including the following configuration: the blower draws air into the second space from an external space isolated from the second space.

[0052] According to the heat exchange device of the second aspect of the present disclosure, the blower draws air from the external space into the second space, generating an air flow that is guided from the second space through the communication part to the first space, thereby preventing the refrigerant from flowing into the control chamber and igniting.

[0053] A heat exchange device according to a third aspect of the present disclosure is the first aspect, further including the following configuration: the blower unit discharges air from the first space to an external space isolated from the first space.

[0054] According to the heat exchange device of the third aspect of the present disclosure, the blower section discharges air from the first space to the external space, thereby generating a flow of air that is guided from the second space to the first space via the communication section, thereby preventing the refrigerant from flowing into the control chamber and igniting.

[0055] A heat exchange device according to a fourth aspect of the present disclosure is the first aspect, further including the following configuration: the first air blowing unit exhausts air from the first space to an external space isolated from the first space, and the second air blowing unit draws air from an external space isolated from the second space into the second space.

[0056] According to the heat exchange device of the fourth aspect of the present disclosure, the first blowing section exhausts air from the first space to the external space, and the second blowing section draws air from the external space into the second space, thereby generating an air flow that is guided from the second space through the communication section to the first space, and preventing the refrigerant from flowing into the control chamber and igniting.

[0057] A heat exchange device according to a fifth aspect of the present disclosure is the heat exchange device of any one of the first to fourth aspects, further including the following configuration: the control room is provided with an air intake port (22a) for drawing air into the first space from an external space isolated from the first space and the second space, and the machine room is provided with an air exhaust port (21a) for discharging air from the second space to the external space.

[0058] According to the heat exchange device of the fifth aspect of the present disclosure, air is drawn from the external space into the second space through the intake port, and air is discharged from the first space to the external space through the exhaust port, thereby generating an air flow that is guided from the second space to the first space through the communication part, and preventing the refrigerant from flowing into the control chamber and igniting.

[0059] A heat exchange device according to a sixth aspect of the present disclosure is the third or fourth aspect, further comprising the following configuration: a refrigerant detection unit that is housed in the machine room and detects leakage of the refrigerant into the first space, and the blower unit starts an operation of discharging air from the first space to the external space in response to detection of leakage of the refrigerant into the first space by the refrigerant detection unit.

[0060] According to the heat exchange device of the sixth aspect of the present disclosure, the refrigerant detection unit starts an operation to discharge air from the first space to the external space in response to detecting that refrigerant has leaked into the first space, thereby ensuring that refrigerant is discharged from the first space in response to the leakage of refrigerant into the first space.

[0061] A heat exchanger according to a seventh aspect of the present disclosure is any one of the first to fourth aspects, further comprising the following configuration: a cable having a control signal line for transmitting a control signal from the control device to the compressor, and the communication portion houses the cable therein.

[0062] According to the heat exchanger of the seventh aspect of the present disclosure, the cable having the control signal line can be housed and protected inside the communication part. The communication part for accommodating the cable connects the first space and the second space, which allows the refrigerant to enter the second space from the first space. However, the blower generates an air flow from the second space toward the first space, which prevents the refrigerant from flowing into the control chamber and igniting.

[0063] The heat exchange device according to an eighth aspect of the present disclosure is the heat exchange device of any one of the first to fourth aspects, further including the following configuration: That is, the control room is disposed in an area vertically above the machine room.

[0064] According to the heat exchange device of the eighth aspect of the present disclosure, the control chamber is located in a region vertically above the machine chamber, thereby more reliably preventing flammable refrigerant, which has a higher specific gravity than air, from entering the control chamber from the machine chamber.

[0065] A heat exchange device according to a ninth aspect of the present disclosure is the heat exchange device of any one of the first to fourth aspects, further including the following configuration: the control chamber is disposed in a region that overlaps with the air-cooled heat exchanger in a vertical direction.

[0066] According to the heat exchange device of the ninth aspect of the present disclosure, the control room is positioned in an area that overlaps vertically with the air-cooled heat exchanger, making it easy for operators to perform maintenance on the control devices housed in the control room.

[0067] A heat exchange device according to a tenth aspect of the present disclosure is the ninth aspect, further comprising the following configuration: a water system (W) having a water pump (16) for pumping water and discharging the water flowing in from a water inlet (15) through a water outlet (17), and a water heat exchanger (9) for exchanging heat between the refrigerant and the water, wherein the control device controls the water pump, and the water pump is disposed vertically below the control room.

[0068] In the heat exchange device according to the tenth aspect of the present disclosure, the water pump is disposed vertically below the control chamber that houses the control device that controls the water pump, which makes it possible to appropriately prevent water from adhering to the control device in the event of water leakage from the water pump or its surroundings.

[0069] REFERENCE SIGNS LIST 1 Air-cooled heat pump chiller 5 Compressor 6 Oil separator 7 Check valve 8 Four-way valve 9 Water heat exchanger 10 Receiver 11 Electronic expansion valve 12 Air-cooled heat exchanger 12a Cooling fan 13 Gas-liquid separator 15 Water inlet 16 Water pump 17 Water outlet 18 Water piping 21 Machine room 21a Exhaust port 22 Control room 22a Air intake 23, 24 Communication section 25 Intake fan (second blower section) 26 Exhaust fan (first blower section) 27 Refrigerant detection section 30 Control device 31, 32 Cable HD Horizontal direction R1 Refrigerant system S0 External space S1 First space S2 Second space VD Vertical direction W Water system

Claims

1. A heat exchange device comprising: a refrigerant system having a compressor that compresses a flammable refrigerant and circulates the refrigerant; a machine room that forms a first space to house the compressor; an air-cooled heat exchanger that exchanges heat between the refrigerant and air and is located vertically above the machine room; a control device that controls the compressor; a control room that houses the control device, forms a second space isolated from the first space, and is located in a position that protrudes horizontally from the air-cooled heat exchanger; a tubular communication part that communicates the first space with the second space; and a blower that generates a flow of air that is guided from the second space to the first space via the communication part.

2. The heat exchange device according to claim 1, wherein the air blowing section draws air into the second space from an external space isolated from the second space.

3. The heat exchange device according to claim 1, wherein the blower section discharges air from the first space to an external space isolated from the first space.

4. A heat exchange device as described in claim 1, wherein the first blower exhausts air from the first space to an external space isolated from the first space, and the second blower draws air from the external space isolated from the second space into the second space.

5. A heat exchange device as described in any one of claims 1 to 4, wherein the control room is provided with an air intake port for drawing air into the second space from an external space isolated from the first space and the second space, and the machine room is provided with an exhaust port for discharging air from the first space to the external space.

6. A heat exchange device as described in claim 3 or claim 4, further comprising a refrigerant detection unit that is housed in the machine room and detects leakage of the refrigerant into the first space, and the blower unit begins the operation of discharging air from the first space to the external space in response to the refrigerant detection unit detecting leakage of the refrigerant into the first space.

7. A heat exchange device according to any one of claims 1 to 4, further comprising a cable having a control signal line for transmitting a control signal from the control device to the compressor, and the communication part houses the cable therein.

8. A heat exchange device according to any one of claims 1 to 4, wherein the control room is located in an area vertically above the machine room.

9. A heat exchange device according to any one of claims 1 to 4, wherein the control room is arranged in an area that overlaps with the air-cooled heat exchanger in the vertical direction.

10. A heat exchange device as described in claim 9, comprising: a water system having a water pump for pressurizing water and discharging the water flowing in from a water inlet through a water outlet; and a water heat exchanger for exchanging heat between the refrigerant and the water, wherein the control device controls the water pump, and the water pump is located vertically below the control room.

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