Refrigeration cycle device

Abstract

To provide a refrigeration cycle device improved in safety.SOLUTION: A refrigeration cycle device is such as to use a combustible refrigerant having a specific gravity larger than that of air, and includes: a compressor compressing the refrigerant and transporting the compressed refrigerant; a heat exchanger performing heat exchange between the refrigerant and the air; a fan sending the air to the heat exchanger; a wind detection part detecting wind velocity and wind pressure around the refrigeration cycle device; and a control part controlling the fan. The control part drives the fan on the basis of the detected values of the wind velocity and the wind pressure detected by the wind detection part.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a refrigeration cycle device. [Background technology]

[0002] In recent years, refrigerants with low global warming potential (GWP) have increasingly been adopted for use in refrigeration cycle equipment. However, some refrigerants with low GWP are flammable, and various safety measures for refrigeration cycle equipment are being considered.

[0003] For example, Patent Document 1 discloses an air conditioner that efficiently exhausts flammable refrigerant gas remaining in a machine room to the outside of the machine room by using ventilation air. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-95156 Summary of the Invention [Problem to be solved by the invention]

[0005] The air conditioner of Patent Document 1 still has room for improvement in terms of improving safety.

[0006] The present disclosure provides a refrigeration cycle device with improved safety. [Means for solving the problem]

[0007] A refrigeration cycle device according to one aspect of the present disclosure includes: A refrigeration cycle device that uses a flammable refrigerant that has a higher specific gravity than air, a compressor that compresses and transports the refrigerant; a heat exchanger for exchanging heat between the refrigerant and air; a fan for blowing air to the heat exchanger; a wind detection unit that detects wind speed or wind pressure around the refrigeration cycle device; a control unit that controls the fan; Equipped with The control unit drives the fan based on the wind speed or wind pressure detected by the wind detection unit. [Effects of the Invention]

[0008] According to the present disclosure, a refrigeration cycle device with improved safety can be provided. [Brief explanation of the drawings]

[0009] [Figure 1] Schematic diagram of a refrigeration cycle device according to a first embodiment of the present disclosure. [Figure 2] Schematic diagram showing the outdoor unit of the refrigeration cycle device of FIG. [Figure 3] Block diagram showing the configuration of the refrigeration cycle device of FIG. [Figure 4] 1 is a timing chart showing the relationship between the wind speed detected by the wind detection unit, the driving state of the fan, and time. [Figure 5] Timing chart for explaining a modified example of the refrigeration cycle device of the first embodiment [Figure 6] 10 is a timing chart showing the relationship between time and the wind speed detected by the wind detection unit and the driving state of the fan in the refrigeration cycle device according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] (Background to this disclosure) In refrigeration cycle devices, refrigerants such as R410A or R32 are widely used. However, from the perspective of preventing global warming, there is a demand for the use of refrigerants with lower global warming potential (GWP).

[0011] The use of propane, for example, as a refrigerant with a low GWP is being considered. Refrigerants with a low GWP, including propane, include flammable refrigerants with a specific gravity greater than that of air. Flammable refrigerants can ignite if they leak, so safety measures for refrigeration cycle devices are required.

[0012] For example, Patent Document 1 discloses an air conditioner that efficiently exhausts flammable refrigerant gas accumulated in a machine room to the outside of the machine room using ventilation air. Patent Document 1 also discloses that the exhausted flammable refrigerant gas is prevented from coming into contact with electronic components in the control box due to being blown up by the ventilation air.

[0013] The present inventor(s) have studied a refrigeration cycle device with improved safety and have arrived at the following invention.

[0014] Hereinafter, embodiments of the present disclosure will be described, occasionally with reference to the drawings. However, the following embodiments are merely examples for explaining the present disclosure, and are not intended to limit the present disclosure to the following content (e.g., the shape, dimensions, and arrangement of each component). Positional relationships, such as up, down, left, and right, are based on the positional relationships shown in the drawings, unless otherwise specified. Each figure described in the following embodiments is a schematic diagram, and the ratios of the size and thickness of each component in each figure do not necessarily reflect the actual dimensional ratios. Furthermore, the dimensional ratios of each element are not limited to the ratios shown in the drawings.

[0015] In the following description, when it is necessary to distinguish between multiple components, prefixes such as "first" and "second" are added to the names of the components. However, when the components can be distinguished from each other by the symbols attached to them, the prefixes such as "first" and "second" may be omitted in consideration of readability of the text.

[0016] (Embodiment 1) [Overall configuration] 1 is a schematic diagram of a refrigeration cycle apparatus 10 according to a first embodiment of the present disclosure. The refrigeration cycle apparatus 10 of the present embodiment includes a heat exchanger 32, a fan 34, a compressor 36, a wind detector 60, and a controller 70.

[0017] In this embodiment, an example will be described in which the refrigeration cycle apparatus 10 is an air conditioner including an indoor unit 20 and an outdoor unit 30. The refrigeration cycle apparatus 10 is not limited to an air conditioner, and may be, for example, a heat pump unit of a refrigerator, a water heater, or a washing machine. In the following description, the refrigeration cycle apparatus 10 may also be referred to as an air conditioner 10.

[0018] As shown in FIG. 1, the air conditioner 10 includes an indoor unit 20 arranged in a room Rin to be air-conditioned, and an outdoor unit 30 arranged in an outdoor Rout.

[0019] The outdoor unit 30 includes, for example, an outdoor heat exchanger (heat exchanger) 32, a fan 34, a compressor 36, and an expansion valve 38. The compressor 36 compresses and transports a refrigerant. The outdoor heat exchanger 32 exchanges heat between the refrigerant and outdoor air A2. The fan 34 sends air to the outdoor heat exchanger 32.

[0020] The indoor unit 20 has, for example, an indoor heat exchanger 22. The outdoor heat exchanger 32, the compressor 36, the expansion valve 38, and the indoor heat exchanger 22 are connected by a refrigerant pipe 50. A refrigerant circulates through the refrigerant pipe 50.

[0021] In this embodiment, the refrigerant includes, for example, a hydrocarbon-based refrigerant such as propane (R-290), isobutane (R-600a), or propylene (R-1270). Alternatively, the refrigerant may be a fluorine-based refrigerant such as HFO-1234yf or R-32. Alternatively, the refrigerant may be a mixed refrigerant of these refrigerants. In this embodiment, a flammable refrigerant is used as the refrigerant. Flammable refrigerants include slightly flammable and highly flammable refrigerants. Furthermore, in this embodiment, a refrigerant with a specific gravity greater than that of air is used as the refrigerant.

[0022] The indoor unit 20 has an indoor heat exchanger 22 and an indoor fan 24. The indoor fan 24 draws indoor air A1 into the indoor unit 20, where it exchanges heat with the indoor heat exchanger 22. The indoor fan 24 blows the indoor air A1 after heat exchange into the room Rin, thereby adjusting the room temperature of the room Rin.

[0023] The outdoor unit 30 is provided with an outdoor heat exchanger 32 that exchanges heat with outdoor air A2, and a fan 34 that draws the outdoor air A2 into the outdoor unit 30 and blows the outdoor air A2 out to the outdoor Rout after exchanging heat with the outdoor heat exchanger 32. The outdoor unit 30 is also provided with a compressor 36, an expansion valve 38, and a four-way valve 40 that execute a refrigeration cycle with the indoor heat exchanger 22 and the outdoor heat exchanger 32. The outdoor heat exchanger 32, fan 34, compressor 36, expansion valve 38, and four-way valve 40 are housed in a housing 42.

[0024] Fig. 2 is a schematic diagram showing the outdoor unit 30 of the refrigeration cycle apparatus 10 of Fig. 1. A wind detector 60 is provided in a housing 42 of the outdoor unit 30.

[0025] The wind detection unit 60 detects wind around the refrigeration cycle apparatus 10. Specifically, it detects wind speed or wind pressure at the outdoor Rout where the outdoor unit 30 is located. In this embodiment, the wind detection unit 60 can be configured with a sensor that detects wind speed, such as a hot wire wind speed sensor or a wind mill wind speed sensor. In this embodiment, as will be described later, in order to detect small wind speeds, such as 0.3 m / s or less, it is more preferable to use a hot wire wind speed sensor that detects wind speed based on temperature. In the example of FIG. 2, one wind detection unit 60 is provided in the outdoor unit 30, but the number of wind detection units 60 is not limited to one, and multiple wind detection units 60 may be provided.

[0026] 2, the wind detection unit 60 can be disposed near the top of the housing 42 of the outdoor unit 30. By disposing the wind detection unit 60 near the top of the outdoor unit 30, the wind speed around the outdoor unit 30 can be detected with high accuracy.

[0027] 3 is a block diagram showing the configuration of the refrigeration cycle apparatus 10 of FIG. 1. The refrigeration cycle apparatus 10 includes a control unit 70 that controls the fan 34. The control unit 70 drives the fan 34 based on the wind speed or wind pressure detected by the wind detection unit 60. The control unit 70 includes, for example, a memory that stores a program and a processing circuit corresponding to a processor such as a CPU (Central Processing Unit). The functions of the control unit 70 may be configured using hardware alone, or may be realized by combining hardware and software. The control unit 70 realizes predetermined functions by reading data and programs stored in the memory and performing various arithmetic processing.

[0028] The control unit 70 drives the fan 34 based on the wind speed or wind pressure detected by the wind detection unit.

[0029] The outdoor unit 30 of the air conditioner 10 may be located in a space surrounded by a wall or fence, such as a balcony. In a space surrounded by a balcony, if a refrigerant leaks, the refrigerant may accumulate around the outdoor unit 30 when there is no wind around the outdoor unit 30, a so-called windless state. If the leaked refrigerant accumulates, the concentration of the refrigerant around the outdoor unit 30 may increase. On the other hand, if wind is blowing around the outdoor unit 30 and air is moving around the outdoor unit 30, even if the refrigerant leaks, the refrigerant is carried by the wind and dispersed to the surrounding area, significantly reducing the possibility of ignition. In this embodiment, the control unit 70 determines that there is no wind around the outdoor unit 30 and drives the fan 34 when there is no wind around the outdoor unit 30. This prevents the refrigerant from accumulating around the outdoor unit 30 even if the refrigerant leaks. This significantly reduces the possibility of the refrigerant igniting.

[0030] A windless state refers to, for example, a state in which the wind speed around the outdoor unit 30 is 0.3 m / s or less. It is known that when the wind speed around the outdoor unit 30 is 0.3 m / s or less, leaked refrigerant tends to accumulate around the outdoor unit 30. For this reason, in this embodiment, a windless state is defined as a state in which the wind speed is 0.3 m / s or less.

[0031] In this embodiment, the control unit 70 drives the fan 34 based on the wind speed detection value detected by the wind detection unit 60 while the compressor 36 is stopped. That is, when the control unit 70 determines that there is no wind around the outdoor unit 30 while the air conditioner 10 is stopped, the control unit 70 drives the fan 34. In this embodiment, when the wind speed detected by the wind detection unit 60 is equal to or less than a predetermined value of 0.3 m / s, the control unit 70 determines that there is no wind around the outdoor unit 30 and drives the fan 34.

[0032] Since the fan 34 is also driven while the compressor 36 is operating, the fan 34 generates wind around the outdoor unit 30. Therefore, even if refrigerant leaks while the compressor 36 is operating, the refrigerant is unlikely to accumulate around the outdoor unit 30. On the other hand, if refrigerant leaks while the compressor 36 is stopped, no wind is generated by the fan 34, and therefore, when there is no wind around the outdoor unit 30, the refrigerant is likely to accumulate around the outdoor unit 30. For this reason, in this embodiment, the control unit 70 drives the fan 34 when the wind speed or wind pressure detected by the wind detection unit is equal to or less than a predetermined value while the compressor 36 is stopped. At this time, the air volume of the fan 34 is, for example, 1.65 m 3 This means that, for example, when the outdoor unit 30 is placed on a balcony of a general size, 5 m wide x 1.2 m high x 1 m deep, the airflow rate of the fan 34 is 1.65 m / min or more. 3 / min or higher, all of the stagnant air on the balcony can be replaced in about four minutes.

[0033] In this embodiment, the control unit 70 determines that there is no wind and drives the fan 34, and then stops driving the fan 34 after a predetermined time has passed. It is known that if a refrigerant leaks, the entire amount of refrigerant will leak out in about four minutes. For this reason, for example, the control unit 70 may determine that there is no wind and drive the fan 34, and then stop driving the fan 34 after four minutes have passed. Setting the predetermined time to four minutes allows more of the leaked refrigerant to be diffused.

[0034] 4 is a timing chart showing the relationship between time and the wind speed detected by the wind detection unit 60 and the drive state of the fan 34. Fig. 4(a) shows the relationship between time and the wind speed value detected by the wind detection unit 60, and Fig. 4(b) shows the relationship between time and the drive state of the fan 34. Drive control of the fan 34 by the control unit 70 will be described with reference to Fig. 4.

[0035] At time t1, when the wind speed detected by the wind detection unit 60 becomes equal to or less than a predetermined value of 0.3 m / s, the control unit 70 determines that there is no wind around the outdoor unit 30 and drives the fan. The control unit 70 then drives the fan 34 for a predetermined time. After the predetermined time has elapsed, the control unit 70 stops driving the fan 34 at time t2. The time from time t1 to time t2 is the predetermined time, which is, for example, four minutes.

[0036] [effect] According to the above-described embodiment, the following effects can be achieved.

[0037] The refrigeration cycle apparatus 10 uses a flammable refrigerant that has a higher specific gravity than air. The refrigeration cycle apparatus 10 includes a compressor 36, a heat exchanger 32, a fan 34, a wind detection unit 60, and a control unit 70. The compressor 36 compresses and transports the refrigerant. The heat exchanger 32 exchanges heat between the refrigerant and air. The fan 34 sends air to the heat exchanger 32. The wind detection unit 60 detects the wind speed or wind pressure around the refrigeration cycle apparatus 10. The control unit 70 controls the fan 34. The control unit 70 drives the fan 34 based on the wind speed or wind pressure detected by the wind detection unit 60.

[0038] With this configuration, it is possible to provide a refrigeration cycle device 10 with improved safety.

[0039] The control unit 70 drives the fan 34 when the wind speed or wind pressure detected by the wind detection unit is equal to or lower than a predetermined value while the compressor 36 is not operating.

[0040] With this configuration, the control unit 70 can determine whether there is no wind around the outdoor unit 30 based on the detection value of the wind detection unit 60, and if it determines that there is no wind, it can drive the fan to diffuse any leaked refrigerant and improve safety.

[0041] The refrigeration cycle apparatus 10 further includes a housing 42 that houses the compressor 36, the heat exchanger 32, and the fan 34, and the wind detector 60 is disposed on the outer wall of the housing 42.

[0042] With this configuration, the control unit 70 can accurately determine whether there is no wind around the housing 42.

[0043] The wind detection unit 60 is configured with at least one of a hot wire type wind speed sensor, a windmill type wind speed sensor, and a strain gauge type wind pressure sensor.

[0044] With this configuration, the wind speed or wind pressure around the outdoor unit 30 can be detected with high accuracy.

[0045] The control unit 70 drives the fan 34 when the wind speed detected by the wind detection unit 60 is 0.3 m / s or less.

[0046] With this configuration, it is possible to prevent the leaked refrigerant from accumulating around the outdoor unit 30, and the safety of the refrigeration cycle apparatus 10 can be improved.

[0047] In the above-described embodiment, the refrigeration cycle apparatus 10 is an air conditioner having the indoor unit 20 and the outdoor unit 30, but is not limited to this. The refrigeration cycle apparatus 10 may be, for example, a heat pump unit of a refrigerator, a water heater, a washing machine, or the like.

[0048] Furthermore, in the above-described embodiment, an example has been described in which the wind detection unit 60 is a wind speed sensor that detects the wind speed around the outdoor unit 30, but this is not limiting. The wind detection unit 60 may also be a wind pressure sensor that detects wind pressure. When the wind detection unit 60 is a wind pressure sensor, the control unit 70 drives the fan 34 based on the detection value of the wind pressure detected by the wind detection unit 60. When the wind detection unit 60 is a wind pressure sensor, the control unit 70 can more accurately determine a windless state by arranging multiple wind detection units 60 and each detecting the wind pressure of wind from a different direction.

[0049] In the above-described embodiment, the wind detection unit 60 is provided on the outer wall of the housing 42 of the outdoor unit 30, but the present invention is not limited to this. The wind detection unit 60 may be provided in any location where it can detect the wind around the refrigeration cycle apparatus 10.

[0050] In the above embodiment, the control unit 70 determines that a windless state exists when the wind speed detected by the wind detection unit 60 is 0.3 m / s or less, but the present invention is not limited to this. An appropriate value can be selected as the wind speed threshold value for determining a windless state.

[0051] The fan 34 may also have an explosion-proof structure. The explosion-proof structure is a structure in which parts that could become a source of ignition due to sparks, heat, or the like are molded with resin or the like, thereby reducing the risk of the fan 34 becoming an ignition source and igniting the leaked refrigerant.

[0052] FIG. 5 is a timing chart illustrating a modification of the refrigeration cycle apparatus of the first embodiment. The control unit 70 may determine that there is no wind around the outdoor unit 30 when the wind speed detected by the wind detection unit 60 remains below a predetermined value for a certain period of time. In the example of FIG. 5, the wind speed becomes 0.3 m / s or less at time t11 and remains at this state until time t12. The control unit 70 determines that there is no wind around the outdoor unit 30 at time t12 and drives the fan 34. The control unit 70 then drives the fan 34 for a predetermined period of time and stops driving the fan 34 at time t13. The period from time t11 to time t12 may be, for example, four minutes. Because the entire amount of refrigerant leaks within four minutes, driving the fan when the wind speed remains below the predetermined value for four minutes reduces the possibility of refrigerant accumulating around the outdoor unit 30 and igniting.

[0053] (Embodiment 2) A second embodiment will be described with reference to Fig. 6. In the second embodiment, the same or equivalent configurations as those in the first embodiment will be denoted by the same reference numerals. In the second embodiment, descriptions that overlap with those in the first embodiment will be omitted.

[0054] The second embodiment differs from the first embodiment in that the control unit 70 determines a failure of the wind detection unit 60. The second embodiment also differs from the first embodiment in that the control unit 70 alternately drives and stops the fan 34 when it determines a failure of the wind detection unit 60. The configuration of the refrigeration cycle apparatus 10 is the same as that of the first embodiment, and therefore a description thereof will be omitted.

[0055] In this embodiment, the control unit 70 determines that the wind detection unit 60 has failed if the wind speed detected by the wind detection unit 60 is equal to or lower than a predetermined value while the fan is being driven based on the detection value detected by the wind detection unit 60. Furthermore, when the control unit 70 determines that the wind detection unit 60 has failed, it alternately drives and stops the fan 34. Note that when the control unit 70 determines that the wind detection unit 60 has failed, the control unit 70 may control the fan 34 to continue driving so that it does not stop, rather than alternately driving and stopping the fan 34.

[0056] 6 is a timing chart showing the relationship between time and the wind speed detected by the wind detection unit 60 of the refrigeration cycle apparatus 10 according to the second embodiment and the driving state of the fan 34. A more specific description will be given with reference to FIG.

[0057] 6, because the wind speed detected by the wind detection unit 60 at time t21 is equal to or less than the predetermined value of 0.3 m / s, the control unit 70 determines that there is no wind around the outdoor unit 30 and drives the fan 34. The control unit 70 drives the fan 34 from time t21 to time t22. Even though the fan 34 is driven from time t21 to time t22, the wind speed detected by the wind detection unit 60 is equal to or less than 0.3 m / s, so the control unit 70 determines that the wind detection unit 60 has failed. Note that the wind speed threshold for determining a failure of the wind detection unit 60 is not limited to 0.3 m / s, and an appropriate value can be selected as appropriate.

[0058] When the control unit 70 determines that the wind detection unit 60 has failed, it alternately drives and stops the fan 34. In the example of FIG. 6, the control unit 70 stops the fan 34 from time t22 to time t23, and drives the fan 34 from time t23 to time t24. Furthermore, the control unit 70 stops the fan 34 from time t24 to time t25, and drives the fan 34 from time t25 to time t26. In this way, when the control unit 70 determines that the wind detection unit 60 has failed, the control unit 70 drives the fan 34 intermittently.

[0059] Even if the wind detection unit 60 fails, the fan 34 is driven periodically to generate an air flow around the outdoor unit 30, so that even if the refrigerant leaks, it will not accumulate around the outdoor unit 30.

[0060] In addition, if the control unit 70 determines that the wind detection unit 60 has malfunctioned, the indoor unit 20 of FIG. 1 may be configured to notify the user of the malfunction of the wind detection unit 60 via a display unit or speaker, etc.

[0061] (Addendum) The above description of the embodiments discloses the following techniques.

[0062] (Technology 1) A refrigeration cycle device that uses a flammable refrigerant that has a higher specific gravity than air, the refrigeration cycle device comprising: a compressor that compresses and transports the refrigerant; a heat exchanger that exchanges heat between the refrigerant and air; a fan that sends air to the heat exchanger; a wind detection unit that detects wind speed or wind pressure around the refrigeration cycle device; and a control unit that controls the fan, wherein the control unit drives the fan based on the detection value of the wind speed or wind pressure detected by the wind detection unit.

[0063] With this configuration, it is possible to provide a refrigeration cycle device with improved safety.

[0064] (Technical 2) The refrigeration cycle device according to Technical 1, wherein the control unit drives the fan when the wind speed or wind pressure detected by the wind detection unit is equal to or lower than a predetermined value while the compressor is stopped.

[0065] With this configuration, when it is determined that there is no wind around the refrigeration cycle device, the fan is driven, thereby making it possible to prevent refrigerant from accumulating around the refrigeration cycle device.

[0066] (Technology 3) A refrigeration cycle device according to Technology 1 or 2, wherein the control unit determines that the wind detection unit has failed if the wind speed or wind pressure detected by the wind detection unit is equal to or lower than a predetermined value while driving the fan based on the detection value detected by the wind detection unit.

[0067] With this configuration, the control unit can determine whether the wind detection unit has failed, and measures can be taken to improve safety if the wind detection unit has failed.

[0068] (Technical 4) The refrigeration cycle device according to Technical 3, wherein the control unit alternately drives and stops the fan when it is determined that the wind detection unit has failed.

[0069] With this configuration, even if it is determined that the wind detection unit has failed, the fan is driven periodically to prevent refrigerant from accumulating around the refrigeration cycle device.

[0070] (Technical Aspect 5) The refrigeration cycle device according to any one of Technical Aspects 1 to 4, further comprising a housing that houses the compressor, the heat exchanger, and the fan, and the wind detection unit is disposed on an outer wall of the housing.

[0071] With this configuration, the control unit can more accurately determine whether there is no wind around the refrigeration cycle device.

[0072] (Technology 6) The refrigeration cycle device according to any one of Technologies 1 to 5, wherein the wind detection unit is configured with at least one of a hot-wire wind speed sensor, a windmill wind speed sensor, or a strain gauge wind pressure sensor.

[0073] With this configuration, the wind detection unit can accurately detect the wind speed or wind pressure around the refrigeration cycle device.

[0074] (Technical 7) The refrigeration cycle device according to any one of Technical 1 to Technical 6, wherein the control unit drives the fan when the wind speed detected by the wind detection unit is 0.3 m / s or less.

[0075] With this configuration, it is possible to prevent the refrigerant from accumulating around the refrigeration cycle device.

[0076] (Technology 8) The refrigeration cycle device according to any one of Technologies 1 to 7, wherein the fan has an explosion-proof structure.

[0077] This configuration reduces the risk of the fan becoming an ignition source and igniting the refrigerant. [Industrial Applicability]

[0078] The present disclosure can be widely applied to refrigeration cycle devices that use flammable refrigerants. [Explanation of symbols]

[0079] 10 Refrigeration cycle device 20 Indoor unit 22 Indoor heat exchanger 24 Indoor fan 30 Outdoor unit 32 Heat exchanger (outdoor heat exchanger) 34 Fans 36 Compressor 38 Expansion valve 40 Four-way valve 42 Case 50 Refrigerant piping 60 Wind detection unit 70 Control Unit

Claims

1. A refrigeration cycle device that uses a flammable refrigerant that has a higher specific gravity than air, a compressor that compresses and transports the refrigerant; a heat exchanger for exchanging heat between the refrigerant and air; a fan for blowing air to the heat exchanger; a wind detection unit that detects wind speed or wind pressure around the refrigeration cycle device; a control unit that controls the fan; Equipped with The control unit drives the fan based on the detected value of the wind speed or the wind pressure detected by the wind detection unit. Refrigeration cycle equipment.

2. the control unit drives the fan when the wind speed or wind pressure detected by the wind detection unit is equal to or lower than a predetermined value while the compressor is stopped. The refrigeration cycle device according to claim 1.

3. the control unit determines that the wind detection unit has failed if the wind speed or wind pressure detected by the wind detection unit is equal to or less than a predetermined value while the fan is being driven based on the detection value detected by the wind detection unit. The refrigeration cycle device according to claim 1.

4. the control unit alternately drives and stops the fan when it determines that the wind detection unit has failed. The refrigeration cycle device according to claim 3.

5. The compressor further includes a housing that houses the compressor, the heat exchanger, and the fan, The wind detector is disposed on an outer wall of the housing. The refrigeration cycle device according to claim 1.

6. The wind detection unit is configured with at least one of a hot wire wind speed sensor, a wind mill wind speed sensor, and a strain gauge wind pressure sensor. The refrigeration cycle device according to claim 1.

7. The control unit drives the fan when the wind speed detected by the wind detection unit is 0.3 m / s or less. The refrigeration cycle device according to claim 1.

8. The fan has an explosion-proof structure. The refrigeration cycle device according to claim 1.

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