Management device for refrigeration cycle device

Abstract

A management device (100) for a refrigeration cycle device is provided with a management unit (40). The management unit (40) monitors the energization state of energizing the refrigeration cycle device (10). The management unit (40) notifies the user when it is determined that the power supply to the refrigeration cycle device (10) is cut off.

Description

Technical Field

[0001] The present invention relates to a management device for a refrigeration cycle device. Background Art

[0002] In recent years, from the perspective of environmental protection, laws and regulations related to refrigerant leakage detection systems for refrigeration cycle devices based on constant remote monitoring have been revised. According to the regulations, there are system requirements related to refrigerant detection frequency and refrigerant detection accuracy. In the requirements of detection frequency, for example, there is an obligation to implement refrigerant leakage detection at least once a day and retain the detection results for a certain period of time. In the requirements of detection accuracy, for example, it is required to detect refrigerant leakage from a refrigeration cycle device filled with a specified amount of refrigerant under specified operating conditions until the amount of refrigerant is reduced by a specified amount. Therefore, a refrigerant leakage detection system that meets the system requirements of these laws and regulations and can be actually used is proposed. For example, in Patent Document 1 (Japanese Patent Publication No. 6791429) and Patent Document 2 (Japanese Patent Publication No. 2021-156528), the following system is described: the operating data of the refrigeration cycle device obtained by the remote monitoring device is input into a prediction model based on machine learning or regression equation, and the refrigerant leakage is determined based on the output refrigerant amount prediction value held by the refrigeration cycle device. Summary of the invention

[0003] Problems to be solved by the invention

[0004] The refrigerant leakage detection system disclosed in Patent Document 1 or 2 meets the requirements of the detection accuracy of the above-mentioned laws and regulations, but may not meet the requirements related to the detection frequency. For example, when the refrigeration cycle device is in the middle period of spring and autumn when there is no air-conditioning load, or when it is installed in an unoccupied tenant, the manager sometimes cuts off the main power supply of the device. In such a situation, even if it is connected to a remote monitoring device and is always in a monitoring state, it is impossible to implement leakage detection more than once a day as required by the law. In addition, even if the refrigeration cycle device connected to the remote monitoring device operates normally, sometimes the operating data or the results of the refrigerant leakage detection performed on site cannot be sent to the remote monitoring device due to poor communication. In this way, in actual use, although it is assumed that various failures related to the above-mentioned requirements related to the detection frequency will occur, Patent Document 1 and Patent Document 2 do not take such failures into account.

[0005] Means for solving problems

[0006] A management device for a refrigeration cycle device according to a first aspect includes a management unit. The management unit monitors a power supply state of the refrigeration cycle device. When the management unit determines that the power supply to the refrigeration cycle device is cut off, the management unit notifies a user.

[0007] The management device for the refrigeration cycle apparatus according to the second aspect is the management device according to the first aspect, wherein the notification is performed by sending a message to the information device of the user.

[0008] The management device for the refrigeration cycle device according to the third aspect is the management device according to the first aspect, wherein the notification is performed by issuing a warning to the user through sound, light, or display.

[0009] The management device of the refrigeration cycle device of the fourth aspect is the management device of any one of the first to third aspects, and further includes a power-on detection device. The power-on detection device has an independent power supply. The management unit and the power-on detection device are built-in or external to the refrigeration cycle device.

[0010] Regarding the management device of the refrigeration cycle device of the fifth viewpoint, on the basis of the management device of any one of the first to third viewpoints, it is further provided with a power-on detection device. The power-on detection device has an independent power supply. The management unit is arranged outside the refrigeration cycle device. The power-on detection device is built into or external to the refrigeration cycle device. The power-on detection device is connected to the management unit via a communication line. When the power-on detection device detects that the power is cut off, it sends a message to the management unit to notify it.

[0011] Regarding the management device of the refrigeration cycle device of the sixth aspect, in addition to the management device of any one of the first to fifth aspects, the management unit is connected to the refrigeration cycle device through a communication line. The management unit is provided outside the refrigeration cycle device. The management unit determines that the power supply of the refrigeration cycle device is cut off based on the fact that no signal from the refrigeration cycle device is received.

[0012] A management device for a refrigeration cycle device according to a seventh aspect is the management device according to the fifth aspect, further comprising a peripheral device connected to the refrigeration cycle device. The power-on detection device is built into or externally provided in the peripheral device.

[0013] The management device for a refrigeration cycle apparatus according to an eighth aspect is the management device according to the seventh aspect, wherein the peripheral device is a communication adapter for transmitting the operation data of the refrigeration cycle apparatus to an external storage device.

[0014] The management device of the refrigeration cycle device according to the ninth aspect is the management device according to any one of the first to eighth aspects, further comprising a fault detection unit. The fault detection unit sends a message to the management unit when the refrigeration cycle device is in fault detection operation, and notifies the user of the fact that the refrigeration cycle device is in fault detection operation.

[0015] The management device of the refrigeration cycle device according to the tenth aspect is the management device according to any one of the first to eighth aspects, further comprising a fault detection unit. When a fault detection operation scheduled by the refrigeration cycle device is on standby and not executed, the fault detection unit sends a message to the management unit to notify the user that the scheduled fault detection operation has not been executed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a diagram showing a configuration of a management device for a refrigeration cycle device according to an embodiment of the present invention.

[0017] Figure 2 It is a diagram showing a configuration of a management device for a refrigeration cycle device according to a modified example.

[0018] Figure 3 It is a diagram showing a configuration of a management device for a refrigeration cycle device according to a modified example.

[0019] Figure 4 It is a diagram showing a configuration of a management device for a refrigeration cycle device according to a modified example.

[0020] Figure 5 It is a diagram showing a configuration of a management device for a refrigeration cycle device according to a modified example.

[0021] Figure 6 It is a diagram showing a configuration of a management device for a refrigeration cycle device according to a modified example.

[0022] Figure 7 It is a diagram showing a configuration of a management device for a refrigeration cycle device according to a modified example.

[0023] Figure 8 It is a diagram showing a configuration of a management device for a refrigeration cycle device according to a modified example.

[0024] Fig. 9 It is a diagram showing a configuration of a management device for a refrigeration cycle device according to a modified example.

[0025] Fig.10 It is a diagram showing a configuration of a management device for a refrigeration cycle device according to a modified example. DETAILED DESCRIPTION

[0026] Hereinafter, a management device 100 for a refrigeration cycle device according to an embodiment of the present invention will be described with reference to the drawings.

[0027] (1) Overall structure of the management device for the refrigeration cycle device

[0028] like Figure 1As shown, the refrigeration cycle device management device 100 is a device for managing the refrigeration cycle device 10 installed in the property 90. The refrigeration cycle device management device 100 is a system for detecting whether there is a refrigerant leak in the refrigeration cycle device 10 and notifying the user. Here, the user includes a person who actually uses the refrigeration cycle device 10 in the property 90 and a facility manager who manages the refrigeration cycle device 10 in or outside the property 90.

[0029] The management device 100 for a refrigeration cycle device is mainly composed of a refrigeration cycle device 10 , peripheral equipment 20 , a power-on detection device 30 , a management unit 40 , and a failure detection unit 41 .

[0030] The management device 100 of the refrigeration cycle device monitors the power supply state of the refrigeration cycle device 10. When determining that the power supply to the refrigeration cycle device 10 is shut off, the management device 100 of the refrigeration cycle device notifies the user.

[0031] The management device 100 of the refrigeration cycle device notifies the user of the refrigerant leakage detection operation status. The refrigerant leakage detection operation status refers to, for example, the refrigerant leakage detection operation in progress and the refrigerant leakage detection operation scheduled standby.

[0032] Hereinafter, each configuration included in the management device 100 for the refrigeration cycle device will be described.

[0033] (2) Refrigeration cycle device

[0034] The refrigeration cycle device 10 is composed of an outdoor unit (not shown) and an indoor unit (not shown). The indoor unit is installed in the air-conditioned space in the property 90. The refrigeration cycle device 10 may also be composed of a plurality of outdoor units and a plurality of indoor units. The outdoor unit and the indoor unit are connected by a dedicated line and a refrigerant pipe.

[0035] The refrigeration cycle device 10 is, for example, an air conditioner. The refrigeration cycle device 10 integrally constitutes a refrigerant circuit composed of a compressor, a heat exchanger, and the like (not shown).

[0036] A remote controller (not shown) is separately installed for the refrigeration cycle device 10, and the remote controller receives operation input for each indoor unit. The remote controller has an input unit and a display unit. The input unit receives control instructions for each indoor unit. The display unit displays the operating status of each indoor unit. The operating status displayed on the display unit of the remote controller includes information such as being in cooling operation / heating operation / refrigerant leakage detection operation standby / refrigerant leakage detection operation / refrigerant leakage detection operation completed, or any of these conditions, or information such as set temperature, air volume, and wind direction. That is, the remote controller also functions as a display unit of the refrigeration cycle device 10 that displays various information about the refrigeration cycle device 10.

[0037] A plurality of refrigeration cycle devices 10 may be installed in one property 90. In addition, a plurality of refrigeration cycle devices 10 may be managed simultaneously by the same management device 100.

[0038] (3) Peripheral equipment

[0039] The peripheral device 20 is connected to one refrigeration cycle device 10. The peripheral device 20 is external to the refrigeration cycle device 10. Here, external means that the peripheral device 20 is connected via any communication line such as wireless or wired, in addition to being directly connected via wired.

[0040] The peripheral device 20 may be connected to either the indoor unit or the outdoor unit, or may be connected to both of them. When connected to the indoor unit, the peripheral device 20 is installed in the same space as the space where the indoor unit is installed or in a space adjacent to the space where the indoor unit is installed.

[0041] The peripheral device 20 is connected to a router (not shown). The peripheral device 20 and the router may be connected via a wireless or wired communication line in addition to being directly connected via a wired connection. Wireless means, for example, refers to Wi-Fi (registered trademark). The peripheral device 20 connects the refrigeration cycle device 10 to the management unit 40 via itself and the router.

[0042] The peripheral device 20 is, for example, a communication adapter. The communication adapter is connected to the control substrate of the refrigeration cycle device 10, and is a device for directly acquiring the operating data of the refrigeration cycle device 10 and sending it to an external storage device (not shown). Although not limited, the operating data of the refrigeration cycle device 10 includes, for example, the temperature / pressure of the refrigerant measured by sensors (not shown) at various locations in the refrigerant circuit, the speed of the inverter control motor (not shown) of the compressor of the outdoor unit, the opening degree of the expansion valve of the outdoor unit or the indoor unit, etc. The communication adapter refers to, for example, a wireless LAN adapter. The wireless LAN adapter communicates wirelessly with a router.

[0043] (4) Power-on detection equipment

[0044] The power-on detection device 30 is built in the peripheral device 20 . That is, the power-on detection device 30 is externally provided to the refrigeration cycle apparatus 10 .

[0045] The power-on detection device 30 is connected to the management unit 40 via a router. The connection between the power-on detection device 30 and the management unit 40 via a router includes a state of being directly connected by wire and a state of being connected via a wireless or wired communication line.

[0046] The power-on detection device 30 has a function of detecting the power-on state of the refrigeration cycle device 10. When the power-on detection device 30 determines that the power supply to the refrigeration cycle device 10 is cut off, it sends a signal notifying the power supply cut off to the management unit 40. The means for determining that the power supply to the refrigeration cycle device 10 is cut off is not particularly limited, and is described as follows, for example.

[0047] The power-on detection device 30 has an independent power source. The independent power source is, for example, a battery or other power source. Usually, the power-on detection device 30 built into the peripheral device 20 is electrically connected to the refrigeration cycle device 10 and is powered by the refrigeration cycle device 10. On the other hand, in the case where the power supply from the refrigeration cycle device 10 is stopped due to the circuit breaker falling off, the power plug of the refrigeration cycle device 10 being disconnected from the socket, etc., the power-on detection device 30 determines that the power supply to the refrigeration cycle device 10 is cut off by the independent power source based on the stop of the power supply. Furthermore, the power-on detection device 30 sends a signal notifying that the power is disconnected to the management unit 40 via the independent power source via the router for notification.

[0048] (5) Management Department

[0049] The management unit 40 is provided outside the refrigeration cycle device 10. That is, the management unit 40 is external to the refrigeration cycle device 10. "External" means that the management unit 40 is connected via a wireless or wired communication line in addition to being directly connected via a wired connection.

[0050] In this embodiment, the management unit 40 is connected to the refrigeration cycle device 10 via the router and the peripheral device 20. The management unit 40 is configured at a distance from the refrigeration cycle device 10. The management unit 40 is a server installed in a remote monitoring center (not shown) located at a distance from the property 90. The management unit 40 can be connected to the power-on detection device 30 via the peripheral device 20.

[0051] The management unit 40 monitors the power supply state of the refrigeration cycle device 10 , and notifies the user when determining that the power supply to the refrigeration cycle device 10 is shut off.

[0052] The method of determining that the power supply to the refrigeration cycle device 10 is cut off is not particularly limited, and is as follows, for example.

[0053] For example, the power-on detection device 30 is equipped with a sensor capable of detecting the power-on state of the refrigeration cycle device 10. When the sensor determines that the power-on of the refrigeration cycle device 10 is cut off, the independent power supply notifies the management unit 40. Based on the notification from the management unit 40, the management unit 40 determines that the power-on to the refrigeration cycle device 10 is cut off.

[0054] The notification is performed, for example, by sending a message to the user's information device 50. The type of information device 50 is not particularly limited, and examples thereof include a smartphone, a wearable device, a personal computer, a tablet computer, etc. Examples of wearable devices include wristband-type and watch-type devices worn on the wrist, headband-type and glasses-type devices worn on the head, and clothing-type devices worn on the body.

[0055] (6) Fault detection unit

[0056] The fault detection unit 41 is external to the refrigeration cycle device 10. "External" means that in addition to being directly connected by wire, it also includes being connected via a wireless or wired communication line. The fault detection unit 41 is connected to the management unit 40, for example. Figure 2 to Figure 9 In FIG. 4 , the fault detection unit 41 is omitted from illustration.

[0057] The fault detection unit 41 detects various faults based on the operation data of the refrigeration cycle device 10. The various faults refer to, for example, the presence or absence of refrigerant leakage. In addition, the fault detection unit 41 may detect only refrigerant leakage.

[0058] The fault detection unit 41 determines refrigerant leakage based on the normal operation data of the refrigeration cycle device 10. Specifically, when the normal operation time of the refrigeration cycle device 10 is short, or when the refrigeration cycle device 10 is continuously stopped and refrigerant leakage cannot be determined, the fault detection unit 41 instructs the refrigeration cycle device 10 to perform a refrigerant leakage detection operation to determine refrigerant leakage. The fault detection unit 41 notifies the user of the refrigerant leakage determination result and the refrigerant leakage detection status (refrigerant leakage detection operation standby, refrigerant leakage detection operation in progress, or refrigerant leakage detection operation completed) via the management unit 40.

[0059] The notification is performed, for example, by sending a message to the user's information device 50. Alternatively, the notification may be performed by sending a message to the refrigeration cycle device 10 and displaying it on the display unit of the remote controller.

[0060] (7) Processing flow

[0061] Next, the process flow of the management device 100 of the refrigeration cycle apparatus will be described.

[0062] The power-on detection device 30 is connected to the refrigeration cycle device 10. The power-on detection device 30 is powered by the refrigeration cycle device 10. When the circuit breaker of the refrigeration cycle device 10 is detached, the power plug of the refrigeration cycle device 10 is unplugged from the socket, etc., the power supply from the power supply to the refrigeration cycle device 10 is cut off. Therefore, when the power supply from the refrigeration cycle device 10 stops, the power-on detection device 30 determines that the power supply to the refrigeration cycle device 10 is cut off. When this judgment is made, the power-on detection device 30 notifies the management unit 40 as follows through the independent power supply: the power supply to the refrigeration cycle device 10 is cut off.

[0063] The management unit 40 determines that the power supply to the refrigeration cycle device 10 is cut off based on the notification from the power supply detection device 30. When making this determination, the management unit 40 notifies the user's information device 50 that the power supply to the refrigeration cycle device 10 is cut off.

[0064] The user is informed by the notification from the power-on detection device 30 or the management unit 40 that the power to the refrigeration cycle device 10 has been cut off. If the power to the refrigeration cycle device 10 is cut off, it is impossible to implement the refrigerant leakage detection more than once a day as required by the above-mentioned laws and regulations. In addition, in the case where the refrigeration cycle device uses a flammable or toxic refrigerant, since the refrigerant leakage detection cannot be implemented, the risk of a dangerous refrigerant leakage accident increases. Therefore, it is assumed that the user who receives the notification of the power-off quickly restores the refrigeration cycle device 10 to the power-on state.

[0065] During power-on, the fault detection unit 41 notifies the user of the status of the refrigerant leakage detection operation (refrigerant leakage detection operation standby, refrigerant leakage detection operation in progress, refrigerant leakage detection operation completed) via the management unit 40. This is to prevent the user from accidentally shutting off the power and to draw attention to the user.

[0066] (8) Features

[0067] (8-1)

[0068] The management device 100 of the refrigeration cycle device of the above embodiment monitors the power supply state of the refrigeration cycle device 10. The management device 100 of the refrigeration cycle device includes the management unit 40, and when the management unit 40 determines that the power supply to the refrigeration cycle device 10 is cut off, it notifies the user.

[0069] If the power supply to the refrigeration cycle device 10 is cut off, the refrigerant leakage detection cannot be performed, so the leakage inspection required by laws and regulations cannot be performed, which violates the laws and regulations. In addition, when the refrigeration cycle device uses a flammable or toxic refrigerant, the risk of a dangerous refrigerant leakage accident increases because the refrigerant leakage detection cannot be performed. In the management device 100 of the refrigeration cycle device of the above embodiment, it is possible to determine that the power supply to the refrigeration cycle device 10 is cut off and notify the user. As a result, the user can know that the refrigerant leakage detection has not been performed.

[0070] (8-2)

[0071] In the refrigeration cycle apparatus management device 100 of the above-described embodiment, notification is performed by sending a message to the user's information device 50 .

[0072] Thus, the user can check the refrigeration cycle apparatus 10 for which the refrigerant leakage detection has not been performed even from a remote location through the information device 50 .

[0073] (8-3)

[0074] In addition, in the management device 100 of the refrigeration cycle device of the above-mentioned embodiment, a power-on detection device 30 is also provided. The power-on detection device 30 has an independent power supply. The management unit 40 is arranged outside the refrigeration cycle device 10. The power-on detection device 30 is built in or external to the refrigeration cycle device 10. The power-on detection device 30 is connected to the management unit 40 via a communication line. When the power-on detection device 30 detects that the power is cut off, it sends a message to the management unit 40 and notifies it.

[0075] Thus, whether or not the power supply to the refrigeration cycle apparatus 10 is shut off can be monitored by the power supply detection device 30 .

[0076] In addition, even in a state where the refrigeration cycle device 10 is powered off, that is, even in a state where power is not supplied from the refrigeration cycle device 10 , the power supply detection device 30 can perform notification using an independent power supply.

[0077] (8-4)

[0078] Furthermore, the management device 100 for the refrigeration cycle device of the above-described embodiment further includes a peripheral device 20 connected to the refrigeration cycle device 10. The power-on detection device 30 is built in the peripheral device 20.

[0079] Therefore, there is no need to provide a dedicated device for the power-on detection device 30 .

[0080] (8-5)

[0081] Furthermore, in the management device 100 for the refrigeration cycle apparatus of the above-described embodiment, the peripheral device 20 is a communication adapter for transmitting the operation data of the refrigeration cycle apparatus 10 to an external storage device.

[0082] In addition, if Fig. 9 As shown, by having the power-on detection device 30 built into the communication adapter, it is possible to equip the refrigeration cycle device 10 with a refrigerant leakage detection function without increasing the types of peripheral devices 20 connected to the refrigeration cycle device 10. In this case, for example, the communication adapter having the power-on detection device 30 connected to the refrigeration cycle device 10 built therein is further connected to a router installed indoors in a wireless or wired manner, and is connected to a management unit 40 installed outside the property 90 via the Internet. When the power supply of the refrigeration cycle device 10 is disconnected, the communication adapter is notified to the management unit 40.

[0083] (8-6)

[0084] Furthermore, the management device 100 of the refrigeration cycle device includes a fault detection unit 41. The fault detection unit 41 sends a message to the management unit 40 when the refrigeration cycle device 10 is in the fault detection operation, and notifies the user of the fault detection operation.

[0085] This allows the user to know that the fault detection operation is in progress, and thus the user can be alerted to avoid accidentally shutting off the power supply.

[0086] (8-7)

[0087] The management device 100 of the refrigeration cycle device includes a fault detection unit 41. When the predetermined fault detection operation of the refrigeration cycle device 10 is on standby and not executed, the fault detection unit 41 sends a message to the management unit 40 to inform the user that the predetermined fault detection operation is not executed.

[0088] This allows the user to know that the fault detection operation is in progress, and thus the user can be alerted to avoid accidentally shutting off the power supply.

[0089] (9) Modification

[0090] (9-1) Modification A

[0091] In the above embodiment, the power-on detection device 30 determines that the power supply to the refrigeration cycle device 10 is cut off, and the management unit 40 determines that the power supply is cut off based on the notification from the power-on detection device 30, but the present invention is not particularly limited to this. For example, the management unit 40 may directly determine that the power supply to the refrigeration cycle device 10 is cut off without based on the notification from the power-on detection device 30.

[0092] Specifically, the management unit 40 is connected to the refrigeration cycle device 10 via a communication line. The management unit 40 is provided outside the refrigeration cycle device 10. Based on the fact that no signal from the refrigeration cycle device 10 is input or no response is given to a command sent from the management unit 40, the management unit 40 assumes that the power supply to the refrigeration cycle device 10 may be cut off in addition to the abnormality of the communication line. In this case, the manager of the management unit 40 confirms with the manager of the refrigeration cycle device 10 via an e-mail or a phone call whether the power supply is cut off.

[0093] There is no particular limitation on the method for determining whether the power to the refrigeration cycle device 10 is cut off. For example, when the management unit 40 uses the property 90 to manage multiple air-conditioning devices 10, if air-conditioning devices 10 that can communicate normally and air-conditioning devices 10 that cannot communicate exist together, it can be determined that the communication line is normal and there is a high possibility that the power to the air-conditioning device 10 that cannot communicate is cut off.

[0094] (9-2) Modification B

[0095] In the above embodiment, the communication adapter is used as an example of the peripheral device 20. However, the peripheral device 20 is not particularly limited to this. Figure 2 As shown, the peripheral device 20 may also be a centralized controller 60 .

[0096] The centralized controller 60 is connected to a plurality of refrigeration cycle devices 10. The centralized controller 60 is connected to the refrigeration cycle devices 10 via a communication line, whether wired or wireless. The management unit 40 is provided outside the property 90 and is connected to the centralized controller 60 of the property 90 via a communication line.

[0097] The centralized controller 60 can manage the operation schedule or perform energy-saving control of the plurality of refrigeration cycle devices 10. In addition, the centralized controller 60 can display various fault information occurring in the plurality of refrigeration cycle devices 10. The fault information may include refrigerant leakage.

[0098] The centralized controller 60 collects information from the power-on detection device 30 that is built into or external to the refrigeration cycle device 10 .

[0099] When the power supply to the refrigeration cycle device 10 connected to the centralized controller 60 is cut off, the built-in or external power supply detection device 30 detects and sends the information to the centralized controller 60. The centralized controller 60 displays the obtained information and notifies the manager of the property 90, and notifies the management unit 40 of the information that the power supply to the refrigeration cycle device 10 is cut off. The management unit 40 determines that the power supply to the refrigeration cycle device 10 is cut off based on the notification from the centralized controller 60. When this determination is made, the management unit 40 notifies the user's information device 50 of the information that the power supply to the refrigeration cycle device 10 is cut off.

[0100] (9-3) Modification C

[0101] In the above-mentioned modification B, the management unit 40 is disposed outside the property 90, but the present invention is not limited thereto. Figure 3 As shown, the management unit 40 may be installed inside the property 90. In this case, the centralized controller 60 may also play the role of the management unit 40.

[0102] (9-4) Modification D

[0103] In the above-mentioned embodiment, the power-on detection device 30 is built in the peripheral device, but the present invention is not particularly limited thereto. For example, the power-on detection device 30 may be externally provided in the peripheral device 20 .

[0104] Furthermore, if Figure 4 As shown, the power-on detection device 30 may also be provided completely independently from the peripheral devices. In addition, the power-on detection device 30 may also notify the management department located outside the property 90 that the power is disconnected.

[0105] In this case, the power-on detection device 30 may also have a current sensor 31. The current sensor 31 is arranged between the refrigeration cycle device 10 and the power supply 11 of the refrigeration cycle device 10. The refrigeration cycle device 10 is powered by the power supply 11 of the refrigeration cycle device 10. When the current sensor 31 detects that the power supply from the power supply 11 to the refrigeration cycle device 10 is cut off, the power-on detection device 30 notifies the management unit 40 that the power supply is cut off. The management unit 40 receives the notification of the power supply being cut off and sends a notification to the user's information device 50.

[0106] (9-5) Modification E

[0107] In the above embodiment, the power-on detection device 30 is built into the peripheral device 20, and the peripheral device 20 is external to the refrigeration cycle device 10, but it is not particularly limited to this. Figure 5 As shown, the power-on detection device 30 may also be built into the refrigeration cycle device 10 .

[0108] (9-6) Modification F

[0109] In the above embodiment, the power detection device 30 determines that the power supply of the refrigeration cycle device 10 is cut off, and the management unit 40 determines that the power supply is cut off based on the notification from the power detection device 30, but it is not particularly limited to this. For example, the management unit 40 can also directly determine that the power supply of the refrigeration cycle device 10 is cut off.

[0110] In this case, if Figure 6As shown, the management unit 40 is connected to the refrigeration cycle device 10 via a communication line. The management unit 40 is provided outside the refrigeration cycle device 10. The management unit 40 determines that the power supply to the refrigeration cycle device 10 is cut off based on the fact that no signal from the refrigeration cycle device 10 is received.

[0111] Specifically, the management unit 40 periodically sends a signal to the refrigeration cycle device 10, and the refrigeration cycle device 10 responds to the signal by returning a signal to the management unit 40. The device of the refrigeration cycle device 10 that communicates with the management unit 40 is not particularly limited, and may be, for example, a communication board or a control board built into the refrigeration cycle device 10.

[0112] When receiving the signal from the refrigeration cycle device 10 , the management unit 40 determines that the refrigeration cycle device 10 is powered on.

[0113] On the other hand, when no signal is received from the refrigeration cycle device 10, the management unit 40 determines that, in addition to the communication line being blocked, there is a possibility that the power supply to the refrigeration cycle device 10 is cut off. When making this determination, the management unit 40 notifies the user's information device 50 that the power supply to the refrigeration cycle device 10 may be cut off.

[0114] (9-7) Modification G

[0115] In the modified examples B and C, the management unit 40 is provided in the centralized controller 60 outside or inside the property 90 , but the present invention is not particularly limited thereto. For example, the management unit 40 may be provided inside the refrigeration cycle device 10 .

[0116] In this case, if the management unit 40 is powered by the refrigeration cycle device 10, it stops functioning when the power of the refrigeration cycle device 10 is turned off. Figure 7 As shown, a management unit 40 is provided in a power-on detection device 30 having an independent power supply, so that the power-on detection device 30 is built into the refrigeration cycle device 10. When the power-on detection device 30 detects that the power to the refrigeration cycle device 10 is cut off, it notifies the user's information device 50 of the power cut off via the management unit built into itself.

[0117] The means for determining that the power supply to the refrigeration cycle device 10 is cut off is not particularly limited, and may be described as follows, for example. The power-on detection device 30 has an independent power supply. Usually, the power-on detection device 30 is electrically connected to the refrigeration cycle device 10 and is powered by the refrigeration cycle device 10. On the other hand, in the case where the power supply from the refrigeration cycle device 10 is stopped, the power-on detection device 30 determines that the power supply is cut off through its own power supply based on the stop of the power supply, and notifies the user through the built-in management unit 40. The means for notification is not particularly limited, and for example, the power-on detection device 30 notifies the user's information device 50 that the power supply is cut off.

[0118] Alternatively, the user may be notified by issuing a warning through sound, light or display. In this case, the power-on detection device 30 and the management unit 40 are equipped with the equipment required to execute their respective warnings. For example, in the case of issuing a warning through sound, the management unit 40 is equipped with a speaker. In the case of issuing a warning through light, the power-on detection device 30 is equipped with an LED (Light Emitting Diode) and the warning is issued by flashing the LED. In addition, in the case of issuing a warning through display, the power-on detection device 30 has a function of causing the remote control display unit to display a warning. As a result, the user can be informed of the cessation of the refrigerant leakage detection function at the site where the refrigeration cycle device 10 is installed.

[0119] (9-8) Modification H

[0120] In the modification G, the power-on detection device 30 as the management unit is built into the refrigeration cycle device 10, but the present invention is not particularly limited to this. Figure 8 As shown, the power-on detection device 30 as the management unit may be external to the refrigeration cycle device 10. In the modification D, the external power-on detection device 30 notifies the management unit 40 installed outside the property 90 that the power is turned off, and notifies the information device installed inside.

[0121] The power-on detection device 30 is installed in the same place of the property 90 where the refrigeration cycle device 10 is installed or in the vicinity thereof. However, it can also be installed in other places when other places are suitable for power-on detection. The power-on detection device 30 can be connected to one refrigeration cycle device 10, and can also be connected to multiple refrigeration cycle devices 10. The power-on detection device 30 has a current sensor 31. The current sensor 31 is arranged between the refrigeration cycle device 10 and the power supply 11 of the refrigeration cycle device 10. When the current sensor 31 detects that the power supply to the refrigeration cycle device 10 is cut off, the power-on detection device 30 notifies the user.

[0122] (9-9) Modification Example I

[0123] In the above embodiment, one power-on detection device 30 installed in one property 90 is connected to the management unit 40, but the number of power-on detection devices 30 connected to the management unit 40 is not limited thereto. That is, the management unit 40 may be connected to a plurality of power-on detection devices 30 installed in a plurality of properties 90. In addition, a plurality of power-on detection devices 30 may be installed in one property 90, and the management unit 40 may be connected to the plurality of power-on detection devices 30 installed in one property 90.

[0124] (9) Modification J

[0125] In the above embodiment, one power-on detection device 30 is connected to each refrigeration cycle device 10 in the management unit 40, but the number of refrigeration cycle devices 10 connected to one power-on detection device 30 is not particularly limited thereto. For example, a plurality of refrigeration cycle devices 10 may be connected to one power-on detection device 30.

[0126] (9-11) Modification K

[0127] In the above embodiment, the fault detection unit 41 is externally disposed on the refrigeration cycle device 10, but is not particularly limited thereto. Fig.10 As shown, the failure detection unit 41 may be provided inside the refrigeration cycle device 10 .

[0128] The above is a description of the embodiments of the present disclosure, but it should be understood that various changes in methods and details can be made without departing from the spirit and scope of the present disclosure as described in the claims. In addition, the embodiments of the present disclosure are described using the refrigerant leakage detection of a refrigeration cycle device as an example, but it can also be an embodiment for fault detection that requires daily or high-frequency inspection in other faults occurring in the refrigeration cycle device.

[0129] Possibility of industrial application

[0130] The management device of the refrigeration cycle device can notify the user that the refrigerant leakage and other failure detections that are required to be performed once a day or more cannot be performed due to power outage.

[0131] Description of symbols

[0132] 10: Refrigeration cycle device;

[0133] 20: Peripheral equipment;

[0134] 30: Power-on detection equipment;

[0135] 40: Management Department;

[0136] 41: fault detection unit;

[0137] 50: Information equipment;

[0138] 100: Management device for refrigeration cycle device.

[0139] Prior art literature

[0140] Patent Literature

[0141] Patent Document 1: Japanese Patent No. 6791429

[0142] Patent Document 2: Japanese Patent Application Publication No. 2021-156528

Claims

1. A management device (100) for a refrigeration cycle device, wherein: The management device (100) of the refrigeration cycle device comprises a management unit (40) which monitors the power supply state of the refrigeration cycle device (10) and notifies a user when it is determined that the power supply to the refrigeration cycle device is cut off.

2. The management device for a refrigeration cycle device according to claim 1, wherein: The notification is performed by sending a message to the information device (50) of the user.

3. The management device for a refrigeration cycle device according to claim 1, wherein: The notification is performed by issuing a warning to the user through sound, light or display.

4. The management device for a refrigeration cycle device according to any one of claims 1 to 3, wherein: The management device of the refrigeration cycle device further comprises a power-on detection device (30) having an independent power supply. The management unit and the power-on detection device are built into or externally disposed in the refrigeration cycle device.

5. The management device for a refrigeration cycle device according to any one of claims 1 to 3, wherein: The management device of the refrigeration cycle device further comprises a power-on detection device having an independent power supply, The management unit is disposed outside the refrigeration cycle device. The power-on detection device is built into or externally mounted on the refrigeration cycle device, is connected to the management unit via a communication line, and transmits a message to the management unit to make the notification when it detects that the power is cut off.

6. The management device for a refrigeration cycle device according to any one of claims 1 to 5, wherein: The management unit is connected to the refrigeration cycle device via a communication line and is provided outside the refrigeration cycle device. The management unit determines that the power supply to the refrigeration cycle device is cut off based on the fact that a signal from the refrigeration cycle device is not received.

7. The management device for a refrigeration cycle device according to claim 5, wherein: The management device of the refrigeration cycle device further comprises a peripheral device (20) connected to the refrigeration cycle device. The power-on detection device is built-in or externally arranged in the peripheral device.

8. The management device for a refrigeration cycle device according to claim 7, wherein: The peripheral device is a communication adapter for transmitting the operation data of the refrigeration cycle device to an external storage device.

9. The management device for a refrigeration cycle device according to any one of claims 1 to 8, wherein: The management device of the refrigeration cycle device further comprises a fault detection unit (41) for detecting abnormality of the refrigeration cycle device. The failure detection unit transmits a message to the management unit when the refrigeration cycle device is in the failure detection operation, and notifies the user that the refrigeration cycle device is in the failure detection operation.

10. The management device for a refrigeration cycle device according to any one of claims 1 to 8, wherein: The management device of the refrigeration cycle device further comprises a fault detection unit (41) for detecting abnormality of the refrigeration cycle device. When a predetermined fault detection operation of the refrigeration cycle device is on standby and not being executed, the fault detection unit sends a message to the management unit to notify the user that the predetermined fault detection operation is not being executed.

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