WO2021166105A1 - Refrigeration cycle device and refrigeration system - Google Patents

Abstract

This refrigeration cycle device can be controlled remotely from an operation terminal (100). The refrigeration cycle device comprises a control unit and an authentication unit (230). The control unit controls the refrigeration cycle device. The authentication unit (230) connects with the operation terminal (100) through a network that is external to the refrigeration cycle device. The authentication unit (230) issues a first password to the operation terminal (100). The operation terminal (100) sends a second password and an operation command for the refrigeration cycle device to the authentication unit (230). If the authentication unit (230) receives the second password within a standard period of time from the timing at which the first password was issued, and the second password matches the first password, the authentication unit (230) permits the control unit to execute the operation command.

Description

Refrigeration cycle equipment and refrigeration system

The present disclosure relates to a refrigeration cycle device that authenticates an operation by an operation terminal by a password, and a refrigeration system including the operation terminal and the refrigeration cycle device.

Conventionally, a refrigeration cycle device that authenticates an operation by an operation terminal with a password is known. For example, Japanese Patent Application Laid-Open No. 2018-44735 (Patent Document 1) discloses an air conditioner in which various settings are made based on a short-range wireless communication signal transmitted by a short-range wireless communication from a mobile communication terminal owned by a user. ing. In the air conditioner, when the password entered in the password input unit is appropriate, processing based on the short-range wireless communication signal is executed. According to the air conditioner, deterioration of security and reliability is suppressed.

Japanese Unexamined Patent Publication No. 2018-44735

In recent years, networks that pass through a large number of relay points such as the Internet have been developed, and remote control using the networks has been realized for devices in various fields. Remote control using the network is also assumed for the refrigeration cycle device. Since the refrigeration cycle device may be used for air conditioning of an indoor space, supply of hot water, adjustment of storage temperature of food, etc., it may directly affect the physical condition of the user. Therefore, in the remote control of the refrigeration cycle device using the network where the intervention of a third party is assumed, a high degree of security is required against the eavesdropping of the password from the network by the third party.

On the other hand, "near field communication" in Patent Document 1 is a communication standard such as so-called NFC (Near Field Communication), and is about several centimeters to about 1 meter using a predetermined frequency (for example, 13.56 MHz). A communication method that enables two-way communication over a short distance is envisioned. In the communication method, it is relatively unlikely that a third party will intervene. Therefore, in Patent Document 1, security measures against password eavesdropping during short-range wireless communication are not considered.

The present disclosure has been made to solve the above-mentioned problems, and an object thereof is to improve the security of a refrigeration cycle device that can be remotely controlled by an operation terminal.

The refrigeration cycle device according to one aspect of the present disclosure can be remotely controlled from an operation terminal. The refrigeration cycle device includes a control unit and a certification unit. The control unit controls the refrigeration cycle device. The authentication unit is connected to the operating terminal via an external network of the refrigeration cycle device. The authentication unit issues the first password to the operation terminal. The operation terminal transmits an operation command for the refrigeration cycle device together with the second password to the authentication unit. The authentication unit permits the control unit to execute an operation command when the second password is received within the reference time from the issuance timing of the first password and when the second password matches the first password. ..

The refrigeration system according to another aspect of the present disclosure includes at least one refrigeration cycle device, an authentication unit, and an operation terminal. The certification unit is connected to at least one refrigeration cycle device via an external network of at least one refrigeration cycle device. The operation terminal is connected to the authentication unit via the network. The authentication unit issues the first password to the operation terminal. The operation terminal transmits an operation command for at least one refrigeration cycle device together with the second password to the authentication unit. When the authentication unit receives the second password within the reference time from the issuance timing of the first password and the second password matches the first password, the authentication unit executes at least one refrigeration cycle of the operation command. Allow the device.

The refrigeration system according to another aspect of the present disclosure includes at least one refrigeration cycle device and an operation terminal. The operating terminal is connected to at least one refrigeration cycle device via an external network of at least one refrigeration cycle device. The operation terminal includes an authentication unit that issues a first password. The operation terminal receives an operation command for at least one refrigeration cycle device from the user together with the second password. When the authentication unit receives the second password within the reference time from the issuance timing of the first password and the second password matches the first password, the authentication unit executes at least one refrigeration cycle of the operation command. Send to device.

According to the refrigeration cycle apparatus and the refrigeration system according to the present disclosure, when the second password is received within the reference time from the issuance timing of the first password and the second password matches the first password. By executing the operation command from the operation terminal, it is possible to improve the security of the refrigeration cycle device that can be remotely controlled by the operation terminal.

It is a block diagram which shows the functional structure of the air-conditioning system which is an example of the refrigeration system which concerns on Embodiment 1. FIG. It is a block diagram which shows the functional structure of the air conditioner of FIG. It is a functional block diagram which shows the hardware configuration of the control device of FIG. It is a figure which also shows the functional structure of an authentication part, and the flow of a terminal registration process, a password issuance process, and an authentication process performed between an authentication part and a system controller. It is a flowchart which shows the flow of a password issuance process. It is a flowchart which shows the flow of an authentication process. It is a figure which shows the functional structure of the air conditioner which is an example of the refrigerating cycle apparatus provided in the refrigerating system which concerns on Embodiment 2. FIG. It is a figure which shows the functional structure of the air conditioner which is an example of the refrigerating cycle apparatus provided in the refrigerating system which concerns on Embodiment 3. FIG. It is a block diagram which shows the functional structure of the air-conditioning system which is an example of the refrigeration system which concerns on Embodiment 4. FIG. It is a block diagram which shows the functional structure of the air-conditioning system which is an example of the refrigeration system which concerns on Embodiment 5. It is a block diagram which shows the functional structure of the air-conditioning system which is an example of the refrigeration system which concerns on Embodiment 6.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In principle, the same or corresponding parts in the drawings are designated by the same reference numerals and the description is not repeated.

Embodiment 1.
FIG. 1 is a block diagram showing a functional configuration of an air conditioning system 1 which is an example of a refrigeration system according to the first embodiment. As shown in FIG. 1, the air conditioning system 1 includes a system controller 100 (operation terminal) and a plurality of air conditioners 200 (refrigeration cycle devices). The system controller 100 is connected to each of the plurality of air conditioners 200 via an external network 900 of the air conditioner 200. The network 900 includes, for example, the Internet and a WAN (Wide Area Network). Remote control of each of the plurality of air conditioners 200 is possible from the system controller 100. The system controller 100 receives an operation command for the air conditioner 200 together with a password from the user. A system (eg, cloud server and mail server) not shown under the control of a third party is connected to the network 900. The air conditioning system 1 is, for example, a commercial refrigeration system. The refrigeration cycle device is not limited to the air conditioner, and may be, for example, a refrigerator, a dehumidifier, a water heater, a chiller, or a showcase.

FIG. 2 is a block diagram showing a functional configuration of the air conditioner 200 of FIG. As shown in FIG. 2, the air conditioner 200 includes an outdoor unit 210, a plurality of indoor units 300, and a plurality of remote controllers 400. The outdoor unit 210 includes, for example, a compressor, a heat exchanger, and an expansion valve (all not shown). Each of the plurality of indoor units 300 includes, for example, a heat exchanger and a blower (both not shown). Refrigerant circulates between the outdoor unit 210 and the plurality of indoor units 300. The plurality of remote controllers 400 are directly connected to each of the plurality of indoor units 300 without going through the network 900. The remote controller 400 is arranged in or near the space air-conditioned by the corresponding indoor unit 300. The user can operate the remote controller 400 to change, for example, a set temperature, an operation mode, an air volume, and an air direction.

The outdoor unit 210 includes a control device 220. The control device 220 includes a control unit 221 and an authentication unit 230. The control unit 221 controls each of the outdoor unit 210 and the plurality of indoor units 300. The control unit 221 controls, for example, the drive frequency of the compressor and the opening degree of the expansion valve. The control device 220 is connected to the network 900.

FIG. 3 is a functional block diagram showing the hardware configuration of the control device 220 of FIG. As shown in FIG. 2, the control device 220 includes a processing circuit 21, a memory 22, and an input / output unit 23. The processing circuit 21 may be dedicated hardware or a CPU (Central Processing Unit) that executes a program stored in the memory 22. When the processing circuit 21 is dedicated hardware, the processing circuit 21 includes, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA ( Field Programmable Gate Array) or a combination of these is applicable. When the processing circuit 21 is a CPU, the function of the control device 220 is realized by software, firmware, or a combination of software and firmware. The software or firmware is described as a program and stored in the memory 22. The processing circuit 21 reads and executes the program stored in the memory 22. Each function of the control unit 221 and the authentication unit 230 is realized by the processing circuit 21 that executes the control program and the authentication program stored in the memory 22. The CPU is also called a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, a processor, or a DSP (Digital Signal Processor).

The memory 22 includes a non-volatile or volatile semiconductor memory (for example, RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable Read Only Memory), or EEPROM (Electrically Erasable Programmable Read Only Memory). )), And includes magnetic discs, flexible discs, optical discs, compact discs, mini discs, or DVDs (Digital Versatile Discs).

The input / output unit 23 receives an operation from the user and outputs the processing result to the user. The input / output unit 23 includes, for example, a mouse, a keyboard, a touch panel, a display, and a speaker.

FIG. 4 is a diagram showing the functional configuration of the authentication unit 230 and the flow of the terminal registration process, the password issuance process, and the authentication process performed between the authentication unit 230 and the system controller 100. In the following, the step is simply referred to as S. S11 to S23 in FIG. 4 correspond to S11 to S23 in the flowcharts of FIGS. 5 and 6, which will be described later in FIG. 4, respectively.

As shown in FIG. 4, the authentication unit 230 includes a terminal registration unit 231, an authentication determination unit 232, a password generation unit 233, and a password verification unit 234. The functions of the terminal registration unit 231, the authentication determination unit 232, the password generation unit 233, and the password verification unit 234 are realized by the processing circuit 21 that executes the authentication program.

The terminal registration process, password issuance process, and authentication process are performed in this order. The terminal registration process is performed directly on the substrate of the control device 220 during construction or maintenance of the air conditioner 200. In the terminal registration process, the terminal information of the system controller 100 and the user level are associated and registered in the terminal registration unit 231.

The terminal information is identification information unique to the system controller 100, and includes, for example, the serial number of the system controller 100 or the IP (Internet Protocol) address. The user level defines at least one specific operation command allowed on the system controller 100. The higher the user level, the wider the types and ranges of operations that the system controller 100 can perform. At level 1, the highest user level, for example, software initialization and update commands that control the air conditioning system are allowed. At level 2, which is an intermediate user level, for example, temperature setting commands and operation switching commands are permitted. At the lowest user level, level 3, for example, start and stop commands for air conditioning operation are allowed. The user level does not have to be set in three stages, and may be set in two stages or four or more stages.

FIG. 5 is a flowchart showing the flow of the password issuance process. FIG. 6 is a flowchart showing the flow of the authentication process. In the following, the step is simply referred to as S. The connection nodes N1 and N2 in FIGS. 5 and 6 are connection nodes for the processes shown in FIG. 5 and the processes shown in FIG.

In S11, the system controller 100 transmits an operation application command to the authentication determination unit 232 with reference to FIGS. 4 and 5. The operation application command includes the terminal information of the system controller 100 and the user level. In S12, the authentication determination unit 232 determines whether or not the terminal information of the system controller 100 is a registered operation terminal registered in the terminal registration unit 231. When the system controller 100 is not a registered operation terminal (NO in S12), the authentication determination unit 232 skips the password issuing process and the authentication process and ends the process. When the system controller 100 is a registered operation terminal (YES in S12), the authentication determination unit 232 acquires a one-time password (first password) from the password generation unit 233 in S13, and proceeds to the process in S14. The authentication determination unit 232 transmits a one-time password to the system controller 100 in S14. The authentication determination unit 232 stores the one-time password, the issuance timing of the one-time password, and the terminal information of the system controller 100 in association with each other. The system controller 100 displays the one-time password received from the authentication determination unit 232 on a display unit (for example, a display) (not shown).

FIG. 6 is a flowchart showing the flow of the authentication process. S13 and S14 in FIG. 6 are the same as S13 and S14 in FIG. 5, respectively. As shown in FIG. 6, in S15, the system controller 100 transmits the one-time password (second password) input by the user and the operation command for the air conditioner 200 to the authentication determination unit 232. In S16, the authentication determination unit 232 determines whether or not the reference time (for example, 30 minutes) has elapsed from the issuance timing of the one-time password issued to the system controller 100. If the reference time has elapsed from the issuance timing (YES in S16), the authentication determination unit 232 considers that the one-time password is invalid and returns the process to S13. If the reference time has not elapsed from the issuance timing (NO in S16), the password collation unit 234 is issued in S13 and the one-time password received from the system controller 100 in S17, assuming that the one-time password is valid. Match with the one-time password.

If the one-time password received from the system controller 100 is incorrect (NO in S17), the authentication determination unit 232 assumes that the authentication of the system controller 100 has failed, increments the number of authentications in S18, and proceeds to the process in S19. The authentication determination unit 232 determines in S19 whether or not the number of authentications is greater than the reference number of times (for example, 3 times). When the number of authentications is equal to or less than the reference number (NO in S19), the authentication determination unit 232 returns the process to S16. When the number of authentications is larger than the reference number (YES in S19), the authentication determination unit 232 performs an access blocking process in S20 on the assumption that there is a suspicious access, and then ends the process. The access blocking process includes, for example, notifying a predetermined contact that a suspicious access has been made from the system controller 100, blocking access from the system controller 100 for a certain period of time (for example, one day), and blocking the access. This includes reissuing the one-time password after a certain period of time. The access cutoff time in S20 may be changeable in the board setting of the control device 220.

If the one-time password received from the system controller 100 is correct (YES in S17), is the authentication determination unit 232 capable of operating commands sent from the system controller 100 together with the one-time password in S21 at the user level of the system controller 100? Judge whether or not. If the operation command is not permitted at the user level (NO in S21), the authentication determination unit 232 notifies the system controller 100 that the operation command is not permitted at the user level of the system controller 100 in S22. And the process proceeds to S24. When the operation command is permitted at the user level (YES in S21), the authentication determination unit 232 permits the execution of the operation command in S23 and proceeds to the process in S24. The authentication determination unit 232 clears the number of authentications to 0 in S24 and ends the authentication process.

According to the air conditioning system 1, since the password required for remote operation of the air conditioner 200 via the network 900 is a one-time password that is valid only for a certain period of time, the one-time password becomes invalid after the certain period of time has elapsed. .. Therefore, the security against eavesdropping on the network 900 can be improved.

The information registered in the terminal registration unit 231 in association with the user level is not limited to the terminal information of the system controller 100. For example, information unique to the air conditioning system 1 or the air conditioner 200, such as a system ID (Identification) or a synonym, may be registered in advance in the terminal registration unit 231 by the system administrator in association with the user level. The unique information may be set for each user who is allowed to operate the air conditioning system 1. In this case, if the unique information is notified to the user in advance, the user can receive the issuance of the one-time password by inputting the unique information from the operation terminal. However, in this case, by inputting unique information even at a high user level (a level higher than the reference level), authentication becomes possible and the security of the air conditioning system 1 may be lowered. Therefore, when the user level is higher than the reference level, even if the unique information matches, personal authentication may be separately provided to identify the user who operates the operation terminal. For the information required for the personal authentication, for example, when the first one-time password is issued, the user registers the personal information known only to the user from the operation terminal. Information that identifies an individual is read by the reading function of the operation terminal. Examples of the reading function of the operation terminal include a function of reading an employee ID card by NFC (Near Field Communication) and a function of reading user information by a barcode reader.

As described above, according to the refrigeration system according to the first embodiment, it is possible to improve the security of the refrigeration cycle device that can be remotely controlled by the operation terminal.

Embodiment 2.
In the first embodiment, a case where a configuration having an authentication function using a one-time password is formed in the outdoor unit has been described. The configuration may be formed in the indoor unit.

FIG. 7 is a diagram showing a functional configuration of an air conditioner 200B, which is an example of a refrigeration cycle device included in the refrigeration system according to the second embodiment. The configuration of the air conditioner 200B is such that the control device 220 and the indoor unit 300 in FIG. 2 are replaced with the control device 220B and the indoor unit 300B, respectively. The configuration of the control device 220B is such that the authentication unit 230 is removed from the control device 220 of FIG. The configuration of the indoor unit 300B is such that the authentication unit 230B is added to the indoor unit 300 of FIG. The authentication unit 230B has the same function as the authentication unit 230 of FIG. Other than these, the description is the same, so the description will not be repeated.

As described above, according to the refrigeration system according to the second embodiment, it is possible to improve the security of the refrigeration cycle device that can be remotely controlled by the operation terminal.

Embodiment 3.
In the first embodiment, the case where the configuration having the authentication function by the one-time password is formed in the outdoor unit has been described, and in the second embodiment, the case where the configuration is formed in the indoor unit has been described. The configuration may be formed in the remote controller.

FIG. 8 is a diagram showing a functional configuration of an air conditioner 200C, which is an example of a refrigeration cycle device included in the refrigeration system according to the third embodiment. The configuration of the air conditioner 200C is such that the control device 220 and the remote controller 400 in FIG. 2 are replaced with the control device 220C and the remote controller 400C, respectively. The configuration of the control device 220C is such that the authentication unit 230 is removed from the control device 220 of FIG. The configuration of the remote controller 400C is a configuration in which the authentication unit 230C is added to the remote controller 400 of FIG. The authentication unit 230C has the same function as the authentication unit 230 of FIG. Other than these, the description is the same, so the description will not be repeated.

Since it is assumed that the remote controller 400C frequently receives operations by a user in the space air-conditioned by the indoor unit 300, the remote controller 400C is often arranged inside or near the space. On the other hand, the outdoor unit 210 is often arranged away from the space. By forming the authentication unit 230C on the remote controller 400C, an operation terminal capable of remotely controlling the air conditioner 200D by a user in the space using the remote controller 400C closer to the user than the outdoor unit 210 is authenticated. It can be registered in 230C. Therefore, the convenience of the user of the air conditioner 200C can be improved.

As described above, according to the refrigeration system according to the third embodiment, it is possible to improve the security of the refrigeration cycle device that can be remotely controlled by the operation terminal.

Embodiment 4.
In the first to third embodiments, a case where a configuration having an authentication function using a one-time password is formed in the refrigeration cycle apparatus has been described. The configuration may be formed in the operation terminal.

FIG. 9 is a block diagram showing the functional configuration of the air conditioning system 4, which is an example of the refrigeration system according to the fourth embodiment. The configuration of the air conditioning system 4 is such that the system controller 100 and the air conditioner 200 of FIG. 1 are replaced with the system controller 100D and the air conditioner 200D. The configuration of the air conditioner 200D is such that the certification unit 230 is removed from the air conditioner 200 of FIG. The system controller 100D has a configuration in which an authentication unit 230D is added to the system controller 100 shown in FIG. The authentication unit 230D has the same function as the authentication unit 230 of FIG. Other than these, the description is the same, so the description will not be repeated.

Since the system controller 100D and the air conditioner 200D are connected via the network 900, it is assumed that the system controller 100D is located remotely from the air conditioner 200D. By forming the authentication unit 230D on the system controller 100D, the user of the system controller 100D can remotely operate the air conditioner 200D by using the system controller 100D that is closer to the user than the air conditioner 200D. It can be registered in 230D. Therefore, the convenience of the user of the system controller 100D can be improved.

As described above, according to the refrigeration system according to the fourth embodiment, it is possible to improve the security of the refrigeration cycle device that can be remotely controlled by the operation terminal.

Embodiment 5.
In the first to fourth embodiments, a case where a configuration having a one-time password authentication function is formed in the operation terminal or the air conditioner has been described. The configuration may be formed in other devices, servers or systems connected to the network other than the operating terminal and the air conditioner.

FIG. 10 is a block diagram showing a functional configuration of an air conditioning system 5, which is an example of the refrigeration system according to the fifth embodiment. The configuration of the air conditioning system 5 is such that the air conditioner 200 in FIG. 1 is replaced with 200E and a cloud server 500 is added. The configuration of the air conditioner 200E is such that the certification unit 230 is removed from the air conditioner 200 of FIG. The cloud server 500 is connected to the network 900. An authentication unit 230E is formed on the cloud server 500. The authentication unit 230E has the same function as the authentication unit 230 of FIG. Other than these, the description is the same, so the description will not be repeated.

In the air conditioner system 5, since the authentication unit 230E is formed in the cloud server 500 outside the system controller 100 and the air conditioner 200E, it is possible to reduce the memory consumption of both by executing the authentication software. Further, the maintenance of the authentication unit 230E can be performed by updating the authentication software installed in the cloud server 500. Since the maintenance of the authentication unit 230E can be performed separately from the operations of the air conditioner 200E and the system controller 100, the maintenance cost can be reduced.

As described above, according to the refrigeration system according to the fifth embodiment, it is possible to improve the security of the refrigeration cycle device that can be remotely controlled by the operation terminal.

Embodiment 6.
In the first to fifth embodiments, a refrigeration system including a plurality of refrigeration cycle devices has been described. In the sixth embodiment, a refrigeration system including one refrigeration cycle device will be described.

FIG. 11 is a block diagram showing a functional configuration of an air conditioning system 6 which is an example of the refrigeration system according to the sixth embodiment. The configuration of the air conditioning system 6 is such that the plurality of air conditioners 200 in FIG. 1 are replaced with one air conditioner 200F, and the system controller 100 is replaced with a smartphone 100F (operation terminal). The air conditioning system 6 is, for example, a home refrigeration system. A certification unit 230F is formed on the air conditioner 200F. The authentication unit 230F has the same function as the authentication unit 230 of FIG. Other than these, the description is the same, so the description will not be repeated.

The smartphone 100F is connected to the network 900 according to a wireless communication method such as LTE (Long Term Evolution) or wireless LAN (Local Area Network). The terminal information of the smartphone 100F includes the telephone number and the e-mail address of the smartphone 100F. The one-time password from the authentication unit 230F may be notified to the smartphone 100F by SMS (Short Message Service) or e-mail. Instead of the smartphone 100F, another mobile terminal such as a tablet terminal or a notebook computer may be used. Further, the authentication unit 230F may be formed on the smartphone 100F or may be formed on a cloud system connected to the network 900.

When the operation terminal is a smartphone, the administrator sets unique information for the air conditioning system such as ID or password preset in the terminal registration unit and the user level associated with it for each user. When the unique information is acquired by an unauthorized user, a one-time password is issued and remote control is possible by the unauthorized user. Since problems can occur especially at the high user level, which is greatly affected by unauthorized operations, it is desirable to perform the following block processing in order to prevent the issuance of one-time passwords to unauthorized users. When a wireless connection is made by a smartphone, the remote controller closest to the smartphone performs the block processing. When unique information is entered regarding operations at a high user level, the remote controller displays the verification code on the display screen of the remote controller and prompts the user to enter the verification code on the input screen of the smartphone application. prompt. If the authentication code is not entered, the wireless connection is determined to be an unauthorized connection and blocked. When the wireless connection by the smartphone is made by Bluetooth (registered trademark), if the radio wave strength from the smartphone is weaker than the threshold value, it is judged as an unauthorized connection and blocked. When the wireless connection is Wi-Fi (registered trademark), if the relay route of the radio wave of the smartphone is other than the predetermined route, it is determined to be an unauthorized connection and blocked. However, as a result of the authentication process, even a user with the highest user level (for example, a legitimate system administrator) may not be issued a one-time password, and remote control may become impossible. Therefore, when the user level is the highest level, the block processing is canceled and remote control becomes possible on the condition that the person is identified by the authentication process that requires a specific operation on the smartphone application. Is desirable.

As described above, according to the refrigeration system according to the sixth embodiment, it is possible to improve the security of the refrigeration cycle device that can be remotely controlled by the operation terminal.

It is also planned that the embodiments disclosed this time will be appropriately combined and implemented within a consistent range. It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present disclosure is indicated by the scope of claims rather than the above description, and is intended to include all modifications within the meaning and scope of the claims.

1,4,5,6 air conditioner system, 21 processing circuit, 22 memory, 23 input / output unit, 100,100D system controller, 100F smartphone, 200,200B-200F air conditioner, 210 outdoor unit, 220,220B, 220C controller , 221 control unit, 230, 230B to 230F authentication unit, 231 terminal registration unit, 232 authentication judgment unit, 233 password generation unit, 234 password verification unit, 300, 300B indoor unit, 400, 400C remote controller, 500 cloud server, 900 network.

Claims (13)

It is a refrigeration cycle device that can be operated remotely from an operation terminal.
A control unit that controls the refrigeration cycle device and
It is provided with an authentication unit connected to the operation terminal via an external network of the refrigeration cycle device.
The authentication unit issues a first password to the operation terminal.
The operation terminal transmits an operation command for the refrigeration cycle device together with the second password to the authentication unit.
The authentication unit executes the operation command when the second password is received within the reference time from the issuance timing of the first password and when the second password matches the first password. A refrigeration cycle device that permits the control unit. The authentication unit does not issue the first password to the operation terminal when the identification information of at least one registered operation terminal registered in the authentication unit does not include the identification information of the operation terminal. Item 2. The refrigeration cycle apparatus according to item 1. The authentication unit registers the identification information in association with a user level that defines at least one specific operation command permitted to the operation terminal, and the operation command is not included in the at least one specific operation command. The refrigeration cycle apparatus according to claim 2, wherein the operation command is not executed. The refrigeration cycle device is
Outdoor unit and
With at least one indoor unit
The at least one indoor unit is further provided with at least one remote controller connected to each of the indoor units without going through the network.
The refrigeration cycle device according to claim 3, wherein the authentication unit is formed in any one of the outdoor unit, the at least one indoor unit, and the at least one remote controller. The refrigeration cycle device according to claim 4, wherein the network includes the Internet. The refrigeration cycle device according to claim 5, wherein the operation terminal includes a smartphone. The authentication unit registers the user level and unique information in the refrigeration cycle device in association with each other, and when the unique information is received from the operation terminal, issues the first password to the operation terminal. The refrigeration cycle apparatus according to claim 6. The refrigeration cycle device according to claim 7, wherein when the user level is higher than the reference level, the authentication unit performs personal authentication for identifying the user who operates the operation terminal. When the user level is higher than the reference level and the unique information is received from the operation terminal, the authentication unit displays an authentication code on the remote controller closest to the operation terminal, and the operation terminal displays the authentication code. The refrigeration cycle device according to claim 8, wherein when the authentication code is not input, the connection from the operation terminal is blocked. When the user level is the highest level and the unique information is received from the operation terminal, the authentication unit permits the connection from the operation terminal by receiving a specific operation from the operation terminal. The refrigeration cycle apparatus according to claim 9. With the operation terminal
A refrigeration system comprising at least one refrigeration cycle device according to any one of claims 1 to 10. With at least one refrigeration cycle device,
An authentication unit connected to the at least one refrigeration cycle device via an external network of the at least one refrigeration cycle device.
It is provided with an operation terminal connected to the authentication unit via the network.
The authentication unit issues a first password to the operation terminal.
The operation terminal transmits an operation command to the at least one refrigeration cycle device together with the second password to the authentication unit.
The authentication unit executes the operation command when the second password is received within the reference time from the issuance timing of the first password and when the second password matches the first password. A refrigeration system that allows the at least one refrigeration cycle device. With at least one refrigeration cycle device,
It comprises an operating terminal connected to the at least one refrigeration cycle device via an external network of the at least one refrigeration cycle device.
The operation terminal includes an authentication unit that issues a first password, and receives an operation command for at least one refrigeration cycle device from the user together with the second password.
The authentication unit executes the operation command when the second password is received within the reference time from the issuance timing of the first password and when the second password matches the first password. A refrigeration system that allows the at least one refrigeration cycle device.

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