JP4879135B2 - Electronic equipment cooling device - Google Patents

Description

  The present invention relates to an electronic device cooling apparatus that cools air blown by a fan attached to an electronic device housed in a cabinet.

2. Description of the Related Art Conventionally, there is known an electronic device cooling device that cools air blown by a fan attached to an electronic device housed in a cabinet with cooling water and returns the air to the room (for example, see Patent Document 1). Generally, this electronic device cooling apparatus is installed in a computer room, and cools a server or a network device installed in the computer room.
US Patent Application Publication No. 2006/0232945

  However, when an abnormality occurs in the compressor of the conventional electronic device cooling apparatus, the conventional electronic apparatus cooling apparatus enters an all-off state and stops operation. In this case, the operation cannot be started unless a predetermined return operation is performed. Some electronic devices that are cooled by this type of cooling device operate 24 hours a day, and the computer room has a long unmanned time. Therefore, it is desired that the operation stop time be as short as possible.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic device cooling apparatus that can continue operation even when a compressor abnormality occurs.

  In order to solve the above-described problems, the present invention provides a heat source unit having a compressor and a condenser, in which a plurality of units are connected in parallel, and a refrigerant pipe extending from the heat source unit, and an electronic device with a fan. The evaporator disposed in the rear door that closes the opening of the accommodated cabinet constitutes a refrigeration cycle, and the air blown by the fan attached to the electronic device is cooled by the evaporator of the rear door and returned to the room. In addition, the compressor is provided with an abnormality detection means, and when abnormality is detected, the abnormality is displayed on the remote controller, and when there is a compressor that has not detected abnormality, the operation of the heat source machine is continued by operating the compressor. It is characterized by comprising control means for

  According to this invention, when an abnormality of the compressor is detected, the abnormality is displayed on the remote controller, and when there is a compressor that has not detected the abnormality, the operation of the heat source machine is continued by the operation of the compressor. Even when a compressor abnormality is detected, the operation of the heat source device can be continued.

  In the above-described configuration, the control means operates the variable capacity compressor so as to compensate for the output of the compressor in which the abnormality is detected when there is a variable capacity compressor in the compressor in which the abnormality is not detected. Is preferred.

  In the above configuration, when the compressor whose abnormality is not detected is a constant capacity type compressor, the control means preferably operates the constant capacity type compressor intermittently so as not to exceed a cooling load.

  The present invention displays the abnormality on the remote controller when the abnormality of the compressor is detected, and continues the operation of the heat source device by the operation of the compressor when there is a compressor that does not detect the abnormality. Even when an abnormality is detected, the operation of the heat source device can be continued.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing an electronic device cooling system according to an embodiment of the present invention.
The electronic device cooling system 1 is a system that cools a plurality of electronic devices 3 (see FIG. 2) disposed in a computer room 2. The computer room 2 has a double floor, and the server rack 10 is placed on the double floor.

  FIG. 2 is a diagram showing the server rack 10. The server rack 10 includes a cabinet 11 whose front and rear surfaces are open, and partition plates (not shown) are disposed in the cabinet 11 with a space therebetween in the vertical direction. 11 A plurality of electronic devices 3 are stacked in the vertical direction in the cabinet 11 by being arranged toward the rear surface. In addition, a rear door 12 is provided on the rear surface of the cabinet 11 so as to open and close the rear opening so as to be closed. The rear door 12 is configured to be freely ventilated, and an electronic device cooling unit 20 is configured therein. Further, a caster 13 is provided at the bottom of the server rack 10 so that the server rack 10 can be easily moved.

  The electronic device 3 is a server or a network device. Generally, this type of electronic device is a fan-equipped electronic device provided with a cooling fan 4, and the fan 4 is driven when the temperature in the device exceeds a predetermined temperature. In addition, it has a forced air cooling function that introduces outside air into the equipment and discharges it from the back of the equipment. For this reason, by arranging the electronic device 3 with the rear surface thereof facing the rear surface of the cabinet, the indoor air is opened to the front of the cabinet by the fan 4 attached to the electronic device 3 as shown in FIG. The electronic device 3 is cooled, passes through the rear door 12, and returns to the room. Further, by opening the rear door 12, access to the electronic device 3 in the cabinet 11 is facilitated.

  The electronic device cooling unit 20 is configured integrally with the rear door 12 of the server rack 10, and the electronic device cooling units 20 provided in a plurality (three in this example) of the server racks 10 are combined into one heat source unit 30 (see FIG. 1) is connected in parallel to a main refrigerant pipe 31 (see FIG. 1) extending from the main refrigerant pipe 31 (see FIG. 1). That is, the plurality of (three) electronic device cooling units 20 and the heat source device 30 to which these units 20 are connected by piping constitute an electronic device cooling device 40. In the example shown in FIG. 1, 12 server racks 10 are arranged in the computer room 2, and the electronic device cooling unit 20 in the three server racks 10 is connected to one heat source unit 30. The case where the electronic device cooling device 40 is arrange | positioned 4 systems is shown.

  The electronic device cooling unit 20 is a unit that constitutes a refrigeration circuit that performs a refrigeration cycle by being connected to the heat source unit 30 by piping, and includes an evaporator 21 and is discharged from the electronic device 3 as shown in FIG. When air flows through the evaporator 21 in the rear door 12, the air is cooled by the evaporator 21 and returned to the room. The evaporator 21 extends over the rear door 12 and is divided into an upper evaporation section 22 and a lower evaporation section 23 at a substantially middle portion between the upper and lower sides, and cools the electronic device 3 in the upper half of the cabinet 11. The upper evaporation unit 22 is in charge, and the lower evaporation unit 23 is in charge of cooling the lower half of the electronic device 3.

  FIG. 3 is a diagram showing a circuit configuration of the electronic device cooling apparatus 40. As shown in this figure, the electronic device cooling unit 20 is connected to the main liquid pipe 31A and the main gas pipe 31B constituting the main refrigerant pipe 31 extending from the heat source unit 30 via the flexible liquid pipe 25 and the flexible gas pipe 26. Connected in parallel. As the flexible liquid pipe 25 and the flexible gas pipe 26, a flexible tube having flexibility and refrigerant impermeability is applied. As the flexible liquid pipe 25, a relatively small diameter tube is applied, and the flexible gas pipe 26 has a relatively large diameter. A tube is applied.

  The main liquid pipe 31A and the main gas pipe 31B extending from the heat source device 30 are provided with a plurality of (five in this example) connection ports P1A to P5A and P1B to P5B for connecting the flexible liquid pipe and the flexible gas pipe, respectively. In this configuration, one end of the flexible liquid pipe 25 and the flexible gas pipe 26 is connected to three sets of the connection ports P1A to P5A and P1B to P5B, thereby three electronic device cooling units 20 (evaporators 21). ) And the remaining two sets of connection ports P4A, P5A, P4B and P5B are used as connection ports for expansion used when the electronic device cooling unit 20 or the heat source unit 30 is expanded. That is, the remaining two sets of connection ports P4A, P5A, P4B, and P5B are used as connection ports for connecting the electronic device cooling unit 20 added when the server rack 10 is added or as connection ports for connecting the additional heat source unit 30. .

The other end of the flexible liquid pipe 25 is connected to the liquid pipe connection part PIN of the electronic device cooling unit 20. The refrigerant pipe 27 extending from the liquid pipe connection portion PIN is branched into two, one branch pipe 27A is connected to the inlet of the upper evaporation section 22 via the expansion valve 28A, and the other branch pipe 27B is connected to the expansion valve 28B. To the inlet of the lower evaporator 23.
The outlets of the evaporating units 22 and 23 are connected to one merging refrigerant pipe (gas pipe) 29, and the flexible gas pipe 26 is connected to the gas pipe connecting part POUT provided at the end of the merging refrigerant pipe 29. . Thus, the refrigerant pipe is connected to the evaporation units 22 and 23 in the electronic device cooling unit 20 so that the refrigerant can be selectively circulated.
Thus, since the evaporator 21 of the electronic device cooling unit 20 is connected via the flexible liquid pipe 25 and the flexible gas pipe 26, the flexible pipes 25, 26 are opened when the rear door 12 in which the evaporator 21 is built is opened and closed. Does not hinder the opening and closing of the rear door 12. Further, the position of the server rack 10 can be finely adjusted even when these pipes are connected.

  Here, as shown in FIG. 1, the main liquid pipe 31A and the main gas pipe 31B are routed in the underfloor space between the upper floor 2A and the lower floor 2B of the computer room 2, and the main liquid pipe 31A and the main gas pipe 31B. The flexible liquid pipe 25 and the flexible gas pipe 26 connected to the connection ports P1A to P5A and P1B to P5B of the gas pipe 31B are connected to the evaporator 21 in the rear door 12 through the opening hole 2C (see FIG. 2) of the upper floor 2A. For this reason, as shown in FIG. 2, the flexible liquid pipe 25 and the flexible gas pipe 26 extend downward from the evaporator 21 and then are routed so as to bend gently in the underfloor space. By providing a sufficient margin, only the flexible pipes 25 and 26 move in accordance with the movement of the rear door 12 when the rear door 12 is opened and closed. Accordingly, no force is applied to the other pipes when the rear door 12 is opened and closed, and the steel pipes can be applied to the other pipes, for example, the main liquid pipe 31A and the main gas pipe 31B.

  In the electronic device cooling unit 20, an electrical unit 51 and a remote controller 52 connected to the electrical unit 51 are provided below the evaporator 21. The electrical unit 51 includes four temperature sensors (refrigerant temperature detection means) for the inlet refrigerant temperature L1 and the outlet refrigerant temperature G1 of the upper evaporator 22, and the inlet refrigerant temperature L2 and the outlet refrigerant temperature G2 of the lower evaporator 23. Each of the expansion valves 28A and 28B is controlled so as to have an appropriate degree of superheat based on the temperature difference (L1-G1, L2-G2) of each of the evaporators 22 and 23. And a function of communicating with the heat source device 30.

  In addition, as shown in FIG. 2, the electronic device cooling unit 20 is disposed on the upstream side of the upper evaporation unit 22 and the lower evaporation unit 23, and is discharged from the electronic device 3 accommodated on the upper and lower sides. Exhaust heat temperature sensors (exhaust heat temperature detecting means) 29E and 29F that detect the temperature (exhaust heat temperature) TX1 and TX2 of the air to be output, and outputs of these sensors 29E and 29F are input to the electrical unit 51.

  The remote controller 52 is disposed on the side surface or the back surface of the server rack 10 in the computer room 2 and connected to the electrical unit 51 in the rear door 12 by wire or wirelessly. Although not shown, the remote controller 52 is provided with an indoor temperature sensor, an operation button, a display unit, a buzzer (sounding unit), and the like. Stop, change of set temperature T0, notification of various error messages (display and buzzer sound output), etc. are performed. Here, the set temperature T0 is the target temperature of the electronic device cooling unit 20, and normally the indoor target temperature of the computer room 2 is set. And in this electronic device cooling device 40, control of each part is performed so that the temperature of the air which entered from the front side opening of the cabinet 11, or the air which passed the evaporator 21 becomes this preset temperature T0.

The heat source device 30 is installed outside the room, and generally includes a compressor 32 that compresses the refrigerant, an oil separator 33, a four-way valve 34, a heat source side heat exchanger (condenser) 35, an expansion valve 36, and a receiver tank 37. The main liquid pipe 31 </ b> A is connected to the receiver tank 37 in order, and the main gas pipe 31 </ b> B is connected to the low-pressure side pipe 41 connected to the compressor 32 inlet via the accumulator 38.
The compressor 32 has an AC compressor (constant capacity type compressor) 32A for constant speed operation and an inverter compressor (variable capacity type compressor) 32B for variable frequency operation, which are in parallel. The cooling capacity of the heat source unit 30 as a whole is configured by being connected and variably controlling the operation frequency of the compressor 32B and the operation frequency of the compressor 32B in accordance with the cooling load.

  More specifically, check valves 42A and 42B are provided on the discharge sides of the compressors 32A and 32B, respectively, and the oil separator 33 is connected to the high-pressure side pipe 42 that merges downstream of the check valves 42A and 42B. The check valve 43, the four-way valve 34, the heat source side heat exchanger 35, the expansion valve 36, and the receiver tank 37 are sequentially connected. The low-pressure side pipe 41 connected to the suction side of each compressor 32A, 32B is connected downstream of the accumulator 38, connected to the four-way valve 34 upstream of the accumulator 38, and connected to the main gas pipe 31B via the four-way valve 34. Connected. The four-way valve 34 is not switched and is fixed to the state shown in FIG.

  Further, a check valve 44 is connected to the high-pressure side pipe 42 in parallel with the expansion valve 36, and the check valve 44 allows a flow from the heat source side heat exchanger 35 to the receiver tank 37 and a reverse flow. Is prohibited. A refrigerant return pipe 45 is connected between the check valves 42A and 42B and the oil separator 33, and the tip of the refrigerant return pipe 45 is connected to the suction side of the compressors 32A and 32B. The refrigerant return pipe 45 is provided with an opening / closing valve 46, and by opening the opening / closing valve 46, a part of the refrigerant discharged from the compressors 32A, 32B can be returned to the suction side of the compressors 32A, 32B. The discharge capacity of the compressors 32A and 32B can be reduced.

  The high pressure side pipe 42 is connected to the main liquid pipe 31A via the liquid side service valve 47, and the low pressure side pipe 41 is connected to the main gas pipe 31B via the gas side service valve 48. The oil separated by the oil separator 33 is returned to the suction side of the compressors 32A and 32B through the oil return pipe 49. In addition, the high pressure side of one compressor 32A, 32B and the low pressure side of the other compressor 32B, 32A are connected to each other by oil return pipes 32C, 32D, and the oil amount in each compressor 32A, 32B is adjusted appropriately. Is done. Further, high pressure switches 5A and 5B are respectively provided on the discharge side of the compressors 32A and 32B. When the discharge pressure of the compressors 32A and 32B exceeds the upper limit of the allowable range by the high pressure switches 5 and 6, each compressor The operation of 32A and 32B is stopped.

  The heat source unit 30 includes an electrical unit 61, and the electrical unit 61 is communicably connected to the electrical unit 51 of the electronic device cooling unit 20 connected to the heat source unit 30 via an internal / external communication line 62. The The electrical unit 61 transmits and receives control signals and operation signals to and from the electrical unit 51 of each electronic device cooling unit 20, and inputs the operation of the remote controller 52 provided on the electronic device cooling unit 20 side. Thus, each part of the electronic device cooling apparatus 40 is controlled.

In the electronic device cooling apparatus 40, the compressors 32A and 32B are operated under the control of the electrical unit 51 of the heat source unit 30. In this case, the electrical unit 51 operates the compressors 32A and 32B based on the difference between the outdoor temperature T2 detected by a temperature sensor (not shown) and the indoor temperature T1 detected by the remote controller 52. The temperature of the expansion valve 36 is controlled so that the temperature difference between the entrance and exit of the heat source side heat exchanger 35 is detected by a temperature sensor (not shown). Control.
In this case, the high-temperature and high-pressure refrigerant discharged from the compressors 32 </ b> A and 32 </ b> B is condensed and liquefied by the heat source side heat exchanger 35, and then passes through the main liquid pipe 31 </ b> A extending from the heat source device 30 to It is supplied to the equipment cooling unit 20.

In each electronic device cooling unit 20, the liquid refrigerant flowing through the main liquid pipe 31A flows through the flexible liquid pipe 25 and flows through the refrigerant pipe 27, where it is divided into two systems, one of which passes through the expansion valve 28A and passes through the upper evaporation section. 22, and the other flows through the lower evaporation section 23 through the expansion valve 28 </ b> B, evaporates and gasifies in each evaporation section 22, 23, and each evaporation section 22 is generated by the refrigerant evaporation heat in each evaporation section 22, 23. , 23 is cooled.
Then, the refrigerant gasified in each of the evaporation units 22 and 23 merges in the merged refrigerant pipe 29, then flows through the flexible gas pipe 26 to the main gas pipe 31 </ b> B, and returns to the heat source unit 30. The refrigeration cycle is performed as described above.

By the way, some electronic devices 3 operating in the computer room 2 operate on a 24-hour basis, and the unmanned time is long. For this reason, if the operation of the electronic device cooling device 40 is forcibly stopped when an abnormality occurs in the compressor 32, it may take a long time for the maintenance worker to come, and the stop time may become longer. is there.
Therefore, in the present embodiment, backup control is performed in which backup operation is performed when an abnormality is detected in the compressors 32A and 32B.

  FIG. 4 is a flowchart showing backup control. This control is executed when the electrical unit 61 of the heat source device 30 detects an abnormality in the compressor 32. As a premise, the electrical unit 61 functions as an abnormality detection means for continuously monitoring whether or not an abnormality has occurred in the compressors 32A and 32B. Specifically, the drive current of the compressors 32A and 32B A first monitoring process for monitoring whether each value is within a predetermined allowable range; a second monitoring process for monitoring whether the discharge temperatures of the compressors 32A, 32B are each within a predetermined allowable range; A third monitoring process for monitoring whether or not the discharge pressure of the compressors 32A and 32B has a high pressure value exceeding an allowable range is performed by the switches 5A and 5B. In the first monitoring process, it is detected that a compressor abnormality has occurred when the drive current value of one of the compressors 32A and 32B is outside the allowable range, and in the second monitoring process, one of the compressors 32A is detected. , 32B detects that a compressor abnormality has occurred when the discharge pressure is outside the allowable range, and in the third monitoring process, it has been detected that the discharge pressure has become high by any of the high pressure switches 5A, 5B. In this case, it is detected that a compressor abnormality has occurred. When a compressor abnormality is detected by the above monitoring, the following control is executed.

  As shown in FIG. 4, the electrical unit 61 first performs a process of notifying the compressor abnormality (step S1). Specifically, an error message (such as an error code) determined in advance according to the detection result of the compressor abnormality is displayed on the remote controller 52, and the buzzer (report sound unit) of the remote controller 52 is driven to detect an abnormality. Notify that it has occurred. In addition, about the compressor 32 by which abnormality was detected, the driving | operation is stopped immediately when abnormality is detected.

Subsequently, the electrical unit 61 determines whether there is a compressor that has not detected an abnormality (step S2). Here, in the present embodiment, the compressor 32A having a constant capacity and the compressor 32B having a variable capacity are provided. Therefore, when an abnormality of only one of the compressors is detected, an abnormality is detected. There is a compressor that does not detect
Here, when an abnormality is detected in both the compressors 32A and 32B (step S2: NO), the operation of both the compressors 32A and 32B is stopped, and the electronic equipment cooling device 40 is completely connected to the electrical unit 61. Control to stop is performed (step S3).

On the other hand, when there is a compressor that has not detected an abnormality (step S2: YES), the electrical unit 61 starts a backup operation by a compressor that has not detected an abnormality (step S4). That is, the electrical unit 61 also functions as an operation unit that continues the operation of the heat source device 30 by the operation of the compressor in which no abnormality is detected.
Here, the backup operation differs depending on whether the compressor in which no abnormality is detected is the constant capacity type compressor 32A or the variable capacity type compressor 32B.

  More specifically, when the compressor that has not detected an abnormality is the variable capacity type compressor 32B, the electrical unit 61 has a variable capacity so as to compensate for the operation output of the constant capacity type compressor 32A that has detected the abnormality. The type compressor 32B is operated. For example, when the constant capacity type compressor 32A is the X [kW] type (X is a fixed value), the electrical unit 61 operates the variable capacity type compressor 32B so as to increase by this X [kW]. In this case, the electrical unit 61 refers to a map that describes the correspondence between the output and the rotational speed when the compressor 32B is operated independently, and a value that does not exist in the map is obtained by interpolation or learned by neuro-calculation. Therefore, it is possible to cope with the cooling load required only by the capacity variable type compressor 32B. The cooling load is a required cooling capacity determined from the difference between the room temperature and the set temperature T0 or the difference between the exhaust heat temperature and the set temperature T0. Thereby, the operation of the heat source device 30 can be continued with the capacity corresponding to the capacity cooling load as much as possible, and the operation of the heat source apparatus 30 can be continued with almost no capacity reduction unless the cooling load is very large. it can.

On the other hand, when the compressor whose abnormality is not detected is the constant capacity type compressor 32A, the electrical unit 61 continues the operation of the heat source device 30 by the constant speed operation of the compressor 32A. In this way, by operating the compressor 32A at a constant speed, when the operation of the compressors 32A and 32B is completely stopped, the cooling of the electronic device 3 is completely stopped, but avoiding such a complete stop. It is possible to reduce obstacles to the operation of the electronic device 3.
Here, in the constant speed operation of the compressor 32A, there is a possibility that it may be larger than the requested cooling load. In such a case, the electrical unit 61 stops the operation of the compressor 32A, When it is determined that the cooling load is greater than the output of the compressor 32A, the operation of the compressor 32A is restarted, that is, intermittently operated so as not to exceed the cooling load.

As described above, according to the present embodiment, the compressors 32A and 32B are monitored for an abnormality, and when an abnormality is detected in the compressor, the abnormality is notified and it is determined whether there is a compressor that does not detect the abnormality. However, if it exists, the operation of the heat source device 30 is continued by the operation of the compressor that does not detect an abnormality. Therefore, the cooling operation can be continued even if the maintenance operator does not perform the return operation, and the return operation can be performed. The operation stop time can be significantly shortened as compared with the conventional system in which the complete stop is performed until there is.
Further, by displaying the abnormality on the remote controller 52, the administrator can be urged to perform maintenance.

In addition, when the compressor that does not detect abnormality is the variable capacity type compressor 32B, the compressor 32A that has detected abnormality is stopped and the compressor 32B is operated to compensate for the output of the compressor 32A. The operation of the heat source device 30 can be continued with the capacity corresponding to the cooling load.
When the compressor that does not detect abnormality is a constant capacity type compressor 32A, the compressor 32B that detects abnormality is stopped and the compressor 32A is intermittently operated so as not to exceed the cooling load. The operation of the heat source device 30 can be continued while avoiding the excess.

  The best mode for carrying out the present invention has been described above, but the present invention is not limited to the above-described embodiment, and various modifications and changes can be made based on the technical idea of the present invention. For example, in the above-described embodiment, the case where the present invention is applied to the electronic device cooling apparatus 40 including the two compressors 32A and 32B has been described. However, the present invention is not limited thereto, and the electronic device includes three or more compressors. The cooling device 40 can be widely applied.

Further, in the above-described embodiment, the electronic apparatus 3 can be vertically placed by vertically arranging the partition plates that partition the inside of the cabinet 11 with a space left and right apart from each other. It may be configured. In this case, the evaporator is divided into a plurality of evaporators vertically and horizontally with these partition plates as a boundary, and an expansion valve is provided in each evaporator, and the heat radiation is cooled according to the heat radiation of each stage of electronic equipment. In addition, each expansion valve may be individually controlled, and a plurality of evaporation units are provided vertically or horizontally in one stage, and an expansion valve is provided in each evaporation part, and the same stage is different for each region. Each expansion valve may be individually controlled so as to cool the heat radiation.
In the above-described embodiment, the case where the air-cooled heat source device 30 is used has been described. However, the present invention is not limited to this, and a water-cooled heat source device 30X may be used as shown in FIG. When the water-cooled heat source unit 30X is used, since the heat source unit 30X is connected to the water pipes 101 and 102 extending from a cooling tower (not shown), a plurality of heat source units 30X can be arranged to overlap each other. 30X placement space is reduced. The present invention may also be applied to an electronic device cooling system in which an air conditioner is connected to the main refrigerant pipe 31 extending from the heat source units 30 and 30X, and the computer room 2 is air-conditioned by the air conditioner.
The heat source units 30 and 30X may be configured as a dedicated cooling (cooling) cycle machine that does not have a four-way valve. The compressor 32 included in the heat source devices 30 and 30X is of a type driven by an electric motor, that is, a so-called EHP (electric heat pump) type, but is not limited thereto, and is compressed by driving a gas engine. It is good also as a GHP (gas heat pump) type heat source machine which drives a machine.

It is a figure which shows the electronic device cooling system which concerns on one Embodiment of this invention. It is a figure which shows a server rack. It is a figure which shows the circuit structure of an electronic device cooling device. It is a flowchart which shows backup control. It is a figure which shows the electronic device cooling system using a water-cooling type heat source machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic device cooling system 2 Computer room 3 Electronic device 4 Fan 10 Server rack 11 Cabinet 12 Rear door 20 Electronic device cooling unit 21 Evaporator 22 Upper evaporation part 23 Lower evaporation part 25 Flexible liquid pipe 26 Flexible gas pipe 28A, 28B, 36 Expansion valve 30, 30X Heat source machine 31 Main refrigerant pipe 31A Main liquid pipe 31B Main gas pipe 32 Compressor 32A Constant capacity compressor 32B Variable capacity compressor 40 Electronic equipment cooling device 51 Electrical unit 52 Remote controller 61 Electrical unit (Abnormality detection means, control means)
P1A to P5A and P1B to P5B connection ports

Claims (3)

A heat source machine having a compressor and a condenser in which a plurality of units are connected in parallel;
An evaporator connected to a refrigerant pipe extending from the heat source unit and disposed in a rear door that closes an opening of a cabinet that houses an electronic device with a fan;
The refrigeration cycle is configured by
The air blown by a fan attached to the electronic device is cooled by the evaporator of the rear door and returned to the room,
Comprising an abnormality detection means of the compressor,
An electronic device comprising: a control means for displaying the abnormality on a remote controller at the time of abnormality detection, and continuing operation of the heat source device by operation of the compressor when there is a compressor that has not detected abnormality. Equipment cooling device. The electronic device cooling device according to claim 1,
The control means operates the variable capacity type compressor so as to compensate for the output of the detected compressor when there is a variable capacity type compressor in which no abnormality is detected. Electronic equipment cooling device. In the electronic device cooling device according to claim 1 or 2,
The electronic control unit is characterized in that the control unit intermittently operates the constant capacity type compressor so as not to exceed a cooling load when the compressor whose abnormality is not detected is a constant capacity type compressor. apparatus.

Images