JP2012007756A - Refrigeration/cold storage system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a refrigeration/cold storage system which can continue to operate even if communication failure or the like occurs, and which has consequently high reliability as a whole system.SOLUTION: In the refrigeration/cold storage system, a refrigerating machine side controller 110 controlling a refrigerating machine 100, a cooler side controller 210 controlling a cooler 200 and a central management control device 300 for performing management in the system can communicate with each other, the central management control device 300 includes: a management control means 321 making data about setting of special function control for setting control condition etc. matched with the control purpose; and a management side communication means 322 for performing communication. The refrigerating machine side controller 110 and the cooler side controller 210 respectively have storage means 113, 213 storing data about setting of regulation control, when it is determined that data about setting of special control are not obtained, the controllers 110, 210 perform control based on setting of regulation control stored in the storage means 113, 213.

Description

  The present invention relates to a refrigeration / refrigeration system that performs cooling control in a low-temperature zone by communicably connecting one or more refrigerators (condensing units), one or more unit coolers, and the like.

  For example, in a refrigeration cycle apparatus using a refrigeration cycle, a compressor, a condenser (heat exchanger), a throttling device (expansion valve), and an evaporator (heat exchanger) are basically connected to circulate the refrigerant. A refrigerant circuit is configured. Then, when the refrigerant evaporates and condenses, a cooling operation or the like is performed while changing the pressure in the pipe by utilizing heat absorption and heat dissipation from the air to be heat exchanged.

  Here, in a refrigeration / refrigeration system configured by connecting a cooling device (hereinafter referred to as a cooler) such as a unit cooler and a showcase disposed in a freezer and a refrigerator, the refrigerator is, for example, a compressor or a condenser. The cooler has an expansion valve and an evaporator to form a refrigerant circuit.

  In such a refrigeration / refrigeration system, for example, a cooler and a refrigerator in the system are communicatively connected by a communication line or wireless so that various signals can be transmitted and received (communication). In addition, when multiple refrigerators and coolers are connected to each other, a centralized control device, which is a host controller, can be further connected to communicate with the refrigerators and coolers in the system. Sometimes. Then, the centralized management control device performs operation control (including management by schedule) of each cooler and each refrigerator based on the data regarding the operation state included in the signal from each cooler and each refrigerator (including the management based on the schedule). For example, see Patent Document 1).

JP 2009-236342 A (FIG. 1)

  In the refrigeration / refrigeration system as described above, as shown in Patent Document 1, it has been impossible to perform various controls corresponding to the environment, such as an air conditioner. This is because, in the refrigeration / refrigeration system, for example, priority is given to control for performing operation that does not impair the quality maintenance of the article to be cooled. However, there are many demands that enable various controls while maintaining quality. In addition, the operating temperature range is wide, and initial setting (fine adjustment) is required on site, but it is difficult to change the setting after the start of operation.

  And when various control is implement | achieved, fundamentally, each cooler and each refrigerator operate | move in cooperation with another apparatus (for example, centralized management control apparatus) by communication. In such a case, for example, if communication becomes impossible due to a disconnection of the transmission line or the like, part of the communication becomes uncontrollable and operation becomes impossible. For this reason, in some cases, it may be impossible to supply the capacity to the refrigeration load for a long time.

  The present invention has been made to solve the above-described problems, and makes it possible to perform control in accordance with the purpose. Further, for example, even if a communication abnormality occurs, the reliability of the system can be improved by continuing the operation. It aims at obtaining the freezing and refrigeration system which can improve the property.

  For this reason, the refrigeration / refrigeration system according to the present invention includes one or more refrigerator-side control devices that respectively control one or more refrigerators and one or more each that controls one or more cooling devices. The cooler-side control device can communicate with a centralized management control device for managing a refrigerator and a cooling device in the system, and the centralized management control device controls the refrigerator and the cooling device according to the control purpose. Management control means for creating data related to setting of special function control for performing control according to conditions and / or operation schedule, and management communication means for performing communication with the refrigerator side control device and the cooler side control device The refrigerator-side control device and the cooler-side control device in the system each have device-side storage means for storing data relating to the setting of a predetermined regulation control function, When it is determined that can not receive a signal including data relating to setting of Koto function control, based on the setting of the specified control function device side storage means for storing, controlling the refrigerator or cooling device to be controlled.

  According to the present invention, for example, the centralized management control device performs control by sending a signal including data relating to the setting of the special function control created to the refrigerator side control device and the cooler side control device by communication. In accordance with the purpose of the control, the entire system can be controlled more optimally. At this time, when communication with the centralized control device cannot be performed and a signal including setting data for special function control cannot be received, control of the controlled refrigerator or cooling device is performed based on the setting of the specified control function. Since the operation is performed, the refrigerator or the cooling device can be continuously operated without stopping due to a communication system abnormality that is not a refrigerant circuit, and the necessary capacity can be supplied regardless of the refrigeration load. For this reason, the reliability of the system can be improved, for example, by preventing the temperature of the article related to cooling from rising and degrading the quality.

It is a figure showing the structure of the freezing / refrigeration system which concerns on Embodiment 1. FIG. It is a figure showing the structure of the refrigerator side controller 110 grade | etc.,. It is a figure showing an example of a driving schedule. 2 is a diagram illustrating a configuration of a central management control device 300. FIG. It is a figure showing the flowchart of the operation | movement which concerns on the control of this Embodiment. FIG. 10 is a diagram for explaining communication related to state data according to the second embodiment.

Embodiment 1 FIG.
FIG. 1 is a diagram showing a configuration of a refrigeration / refrigeration system according to Embodiment 1 of the present invention. With respect to the system related to the refrigerant circuit in the system of FIG. 1, for example, a refrigerator 100A having a compressor and a condenser, a flow rate adjusting means (expansion valve), and a cooler 200A having an evaporator are connected by a refrigerant pipe 700A. (Refrigeration cycle). Similarly, the refrigerator 100B and the cooler 200B are connected by a refrigerant pipe 700B to constitute a refrigerant circuit. Here, in FIG. 1, the refrigerant pipes 700 </ b> A and 700 </ b> B are shown by one line, but are connected by at least two pipes in order to circulate the refrigerant. Hereinafter, unless there is a particular need for distinction, the same type of device may be described by omitting the suffix.

  Next, a communication system in the refrigeration / refrigeration system of the present embodiment will be described. As shown in FIG. 1, in the system according to the present embodiment, a refrigerator-side controller 110 and a cooler-side controller 210 that are control devices are provided for the refrigerator 100 and the cooler 200, respectively. The refrigerator-side controller 110 and the cooler-side controller 210 are communicably connected via a transmission line 600. In addition, each refrigerator controller 110 and the centralized management control device 300 are connected to the centralized transmission line 500 to enable communication. Here, it is assumed that the concentrated transmission line 500 and the transmission line 600 in this embodiment are multiple transmission lines. In addition, the refrigerator 200 connects the central transmission line 500 and the transmission line 600 by a relay device such as a hub, so that the cooler controller 210 and the central management controller 300 can be directly connected to each other like the refrigerator controller 110. Communication can be performed.

  FIG. 2 is a diagram illustrating the configuration of the refrigerator-side controller 110 and the cooler-side controller 210. The refrigerator-side controller 110 shown in FIG. 2A includes a refrigerator-side control unit 111, a refrigerator-side communication unit 112, and a refrigerator-side storage unit 113. The refrigerator-side communication means 112 serves as an interface for communicating various signals with the centralized management control device 300 via the centralized transmission line 500 and for communicating various signals with the cooler-side controller 210 via the transmission line 600. Means.

  FIG. 3 is a diagram illustrating an example of an operation schedule. The refrigerator-side storage means 113 stores data necessary for the refrigerator-side control means 111 to perform processing, processing result data, and the like. In particular, regarding the operation conditions, operation schedule, etc. (hereinafter referred to as operation conditions, etc.) when the refrigerator-side control means 111 performs control, in the present embodiment, the specified control condition storage unit 113A and the special control condition storage unit 113B are Have. The prescribed control condition storage unit 113A stores predetermined prescribed control function setting data. The specified control function setting data is created (finely adjusted for each system) in the central management control device 300 based on, for example, the temperature zone in the warehouse to be maintained at the installation location at the time of installation, and the central transmission line 500 is created. It is made to memorize | store from the signal received via. At this time, the setting is such that the quality of the article to be cooled can be maintained in any environment regardless of the season, time zone, or the like.

  In addition, the special control condition storage unit 113B stores special control function setting data in a signal transmitted, for example, every predetermined time by communication during operation or the like. In the present embodiment, it is assumed that a signal is sent from the centralized management control device 300. Examples of the operating conditions set for the refrigerator 100 include a setting related to a target pressure on the low pressure side (target low pressure) in the refrigerant circuit. Further, for example, in order to temporarily store the operation data when the signal including the data related to the management of the operation state (hereinafter referred to as operation data) cannot be transmitted to the central management control device 300, for example. Operating data storage unit 113C.

  Here, the special function setting refers to a setting according to the control purpose. For example, energy-saving control function for energy-saving and efficient control, comfort control function for controlling articles etc. at a predetermined temperature, operation control for collecting data when performing maintenance, etc. Settings related to maintenance and service control functions. The operation data is data related to the refrigerator 100 and the cooler 200 collected by the central management control device 300. For example, communication abnormality history, operation time in a predetermined unit time (for example, one day), compressor start / stop count, compressor maximum, minimum, average drive frequency, cumulative operation time, compressor start / stop count, compression Machine maximum, minimum, average drive frequency, etc.

  The refrigerator-side control means 111 performs processing related to control of equipment (not shown) for freezing and refrigeration such as a compressor and a fan for the condenser that the refrigerator 100 has, and is connected to a pipe. The capacity is supplied to the existing cooler 200. In the present embodiment, the refrigerator-side control means 111 controls the equipment based on the operating conditions and the like determined by the setting data stored in the refrigerator-side storage means 113.

  For example, the refrigerator-side control unit 111 performs processing based on the special control function setting data while a signal related to the special control function setting data is transmitted from the central management control device 300 side. Further, when it is determined that the signal related to the special control function setting data from the central management control device 300 cannot be received by the disconnection of the central transmission line 500 or the like, the specified control condition storage unit 113A stores the signal. Processing is performed based on the specified control function setting data. For this reason, processing can be performed independently. Meanwhile, the operation data is stored in the operation data storage unit 113C. When it is determined that communication with the central management control device 300 is possible, the refrigerator-side communication means 112 is caused to transmit a signal including operation data stored in the operation data storage unit 113C. Here, the operation data is stored in the operation data storage unit 113C in time series, and when the storage capacity is insufficient, the old operation data is erased in time and new operation data is stored.

  2B includes a cooler-side control unit 211, a cooler-side communication unit 212, and a cooler-side storage unit 213. Here, in FIG. 1, the cooler-side controller 210 is provided in a form independent of the cooler 200 from the usage environment of the cooler 200, but can be mounted on the cooler 200.

  The cooler-side control means 211 performs processing related to control of equipment (equipment for freezing and refrigeration such as an evaporator fan) that the cooler 200 has, and cools a target space (load) such as a warehouse. Let it be done. In the present embodiment, the cooler-side control means 211 is also controlled based on the operating conditions determined by the setting data, as with the refrigerator-side control means 111. Here, as the operation conditions set for the cooler 200, for example, there are settings related to the schedule such as the start / stop time of the cooling operation, the time (hour unit or minute unit) for performing defrosting (defrost), and the like. .

  The cooler-side communication unit 212 is a unit serving as an interface for communicating various signals with the refrigerator-side controller 110 via the transmission line 600. The cooler-side storage unit 213 stores data necessary for the cooler-side control unit 211 to perform processing, processing result data, and the like. The cooler-side storage unit 213 also includes a specified control condition storage unit 213A, a special control condition storage unit 213B, and an operation data storage unit 213C.

  In addition, the remote controller 400 serves as an instruction input unit for inputting an operation instruction to the cooler-side controller 210 when the operator performs a manual operation.

  FIG. 4 is a diagram illustrating the configuration of the centralized management control device 300. The centralized management control apparatus 300 of this embodiment is used for low temperature applications such as freezing and refrigeration. Then, for example, a signal including special control function setting data is sent to each refrigerator 100 and cooler 200 connected by the centralized transmission line 500, and data based on one or a plurality of control purposes is set, and each device is linked. Make control. In the present embodiment, special control function setting data such as operating conditions is created for the purpose of energy saving, and signals are sent to the refrigerator 100 and the cooler 200 for control.

  For example, in order to perform control for the purpose of energy saving, for example, management is performed to lower the temperature of the target space on Monday. At this time, since the frost easily forms on the evaporator of the cooler 200, for example, a signal including special control function setting data in which the target low pressure is set lower than other days is sent to the refrigerator 100. The cooler 200 also sends a signal including special control function setting data in which the defrosting frequency is set to be higher than other days of the week. And on Tuesday, in order to save energy by controlling the temperature of the target space to be higher than Monday, the refrigerator 100 sends a signal including special control function setting data in which the target low pressure is set higher than Monday. . A signal including such special control function setting data is sent to each of the refrigerators 100 (the refrigerator-side controller 110) and the cooler 200 (the cooler-side controller 210) every predetermined time (for example, every day), for example.

  As shown in FIG. 4, the centralized management control apparatus 300 according to the present embodiment includes an operation display unit 310 and a transmission conversion unit 320 that are configured in separate housings. The operation display unit 310 and the transmission conversion unit 320 are connected by a communication line 330 so that communication can be performed. By separating the centralized management control device 300 into an operation display unit 310 related to display and operation and a transmission conversion unit 320 related to system management, software (program) related to a user interface such as a display screen The transmission conversion unit 320 can continue to perform processing such as system management even when the data is changed. Here, in the present embodiment, the communication line 330 is assumed to be a general-purpose transmission line such as a LAN (Local Area Network) cable. For this reason, in some cases, instead of the operation display unit 310, communication connection with a control device located at a higher level is also possible.

  The operation display unit 310 includes a touch panel 311, a display 312, an operation display communication unit 313, an operation display control unit 314, and an operation display storage unit 315. The touch panel 311 serves as an instruction input unit that transmits a signal related to an instruction input by the operator corresponding to the display screen on the display 312 to the operation display control unit 314. A display 312 which is a display means displays a screen based on a display signal from the operation display control means 314. The operation display communication unit 313 serves as an interface for the operation display control unit 314 to communicate a signal including data with the management control unit 321 on the transmission conversion unit 320 side via the communication line 330.

  The operation display control unit 314 includes an operation display unit such as a process based on data included in signals received by the touch panel 311 and the operation display communication unit 313, a process of transmitting a display signal and causing the display 312 to display a screen related to the process. Each device in 310 is controlled. In the present embodiment, the operation display storage unit 315 stores data relating to a screen or the like to be displayed on the display 312. Further, for example, a procedure of processing performed by the operation display control unit 314 is stored as a program.

  The transmission conversion unit 320 includes a management control unit 321, a management side communication unit 322, a system side communication unit 323, and a management storage unit 324. The management control unit 321 performs processing based on the operation data of each refrigerator 100 and cooler 200, for example, and creates special control function setting data such as instructions and operation conditions according to the control purpose (here, energy saving control function). Then, the management side communication means 322 is caused to transmit a signal including data. In addition, operation data included in signals from each refrigerator 100 and cooler 200 is stored in the management storage means 324. Then, in response to a request from the operation display unit 310, data stored in the management storage unit 324 is searched, and a signal including the data related to the search is transmitted via the management side communication unit 322 and the communication line 330 to the operation display unit 310. Send to. Here, the management control unit 321 creates special control function setting data based on the control function selected by the user from the energy saving control function, the comfort control function, and the like via the touch panel 311 of the operation display unit 310.

  The management side communication unit 322 serves as an interface for the management control unit 321 to communicate a signal including data with the operation display control unit 314 on the operation display unit 310 side via the communication line 330. The system-side communication unit 323 serves as an interface for the management control unit 321 to communicate signals including data with each refrigerator-side control unit 111 and the cooler-side control unit 211 via the transmission line 600. The management storage unit 324 stores data necessary for the management control unit 321 to perform processing. In addition, operation data included in signals from each refrigerator 100 and cooler 200 is stored.

  FIG. 5 is a diagram illustrating a flowchart of operations related to control in the refrigerator-side control unit 111 and the cooler-side control unit 211 of the present embodiment. The refrigerator-side control means 111 and the cooler-side control means 211 are normally operated on devices such as a compressor for freezing and refrigeration based on the special control function setting data created by the management control means 321. Control to perform the operation is performed (S1). Then, it is determined whether communication is possible via the concentrated transmission line 500 and the transmission line 600 (S2). The determination of whether or not communication is possible is not particularly limited. For example, whether or not a signal including operation data transmitted from the refrigerator-side controller 110 and the cooler-side controller 210 can be transmitted to the centralized management control device 300. Can be determined. If it is determined that communication is possible, the process returns to S1 and processing based on the special control function setting data is continued.

  On the other hand, for example, when it is determined that communication cannot be performed due to abnormality or disconnection of the centralized management control device 300 and processing based on the special control function setting data cannot be performed, the specified control function stored in the specified control condition storage units 113A and 213A Based on the setting data, control for performing the driving operation is performed (S3). The operation data is stored in the operation data storage units 113C and 213C (S4).

  Then, it is determined whether or not communication has been resumed by restoration or the like (whether or not prescribed control function setting data has been obtained) (S5). When it is determined that the communication has been resumed, the refrigerator-side control unit 111 and the cooler-side control unit 211 perform processing based on the special control function setting data and perform control for causing the device to perform the driving operation. Further, a signal including the operation data stored in the operation data storage units 113C and 213C is transmitted from the refrigerator side communication unit 112 and the cooler side communication unit 212 to the transmission conversion unit 320 (S6).

  As described above, in the refrigeration / refrigeration system according to the first embodiment, when operation is performed with special settings, the central management control device 300 creates and transmits the refrigeration in the system according to the special control function setting data that is created and transmitted. Since the refrigerator 100 controller 110 and the cooler controller 210 of the cooler 200 perform control processing of each device, the control of the entire system is concentrated according to the target control such as energy saving control. It can be done more optimally. Further, it is possible to flexibly cope with the situation and environment of the installation place, and it is possible to realize energy efficient control and the like.

  Then, for example, when it is determined that communication with the centralized management control device 300 cannot be performed due to communication abnormality or the like and a signal including special control function setting data cannot be received, the refrigerator-side controller 110 and the cooler-side controller 210 are stored in advance. Since each device controls independently based on the prescribed control function setting data, the refrigerator 100 and the cooler 200 can be continuously operated without being stopped due to communication abnormality or the like. For this reason, the reliability of the system can be improved, for example, by preventing the deterioration of the quality by raising the temperature of the articles placed in the warehouse or the like to be cooled due to insufficient supply capacity. .

  In addition, the centralized management control device 300 is configured to be configured to be separately connected to the operation display unit 310 related to display and operation and the transmission conversion unit 320 related to system management by communication connection via the communication line 330. For example, the software (program) related to the display screen can be changed without affecting the operation of the transmission conversion unit 320. Further, since the communication line 330 is a general-purpose transmission line such as a LAN (Local Area Network) cable, it can be easily connected for communication.

Embodiment 2. FIG.
FIG. 6 is a diagram for explaining communication related to state data between the operation display unit 310 and the transmission conversion unit 320 according to Embodiment 2 of the present invention. As shown in the first embodiment described above, the centralized management control device 300 connects the operation display unit 310 and the transmission conversion unit 320 via the communication line 330. For this reason, when the operation display unit 310 tries to display the state of the refrigerator 100 and the cooler 200, the operation display unit 310 specifies and requests the refrigerator 100 and the cooler 200 related to the display, and the transmission conversion unit 320 displays the operation display. A signal including data indicating the state (state data) is transmitted to unit 310. This state data may include the operation data described above.

  Here, in the operation display unit 310, when displaying the state of one refrigerator 100 and the cooler 200, the operation display unit 310 receives a signal including state data for one unit, and the state You only need to store the data temporarily.

  Therefore, in the present embodiment, for example, when there is a transmission request for a signal related to the status data for one unit from the operation display unit 310, the transmission conversion unit 320 displays the status data of the refrigerator 100 and the cooler 200 related to the request. The included signal is transmitted via the communication line 330. At this time, when requesting from the operation display unit 310, a predetermined request flag is attached. The signal from the transmission conversion unit 320 is transmitted with a completion flag indicating completion of transmission.

  In the operation display storage unit 315 of the operation display unit 310, a temporary data storage (storage) location (register) is determined in advance for each item of status data. Here, the items are a device number, an operating state, a set temperature, and the like. The operation display control unit 314 requests the state data of the item to be displayed to the transmission conversion unit 320, and the transmission conversion unit 320 transmits a signal including the state data related to the requested item. At this time, the state data is associated with the register so that the state data is stored in a predetermined storage location.

  In the present embodiment, the operation display storage unit 315 does not need to have a place for storing the state data for each of the refrigerator 100 and the cooler 200, and has a storage capacity capable of storing the state data for one unit. It only has to be. And if the refrigerator 100 and the cooler 200 which display a state change, what is necessary is just to rewrite to the state data which concerns on a change. For this reason, storage capacity can be saved. In addition, since the number of refrigerators 100 and coolers 200 that can be displayed based on the secured storage capacity is not determined, the number limit for display can be eliminated.

  Further, the operation display control unit 314 performs processing based on the status data stored in the operation display storage unit 315 and transmits a display signal to the display 312. The display 312 performs display based on the display signal.

  Here, the operation display control unit 314 performs a process of displaying all the status data related to the requested item. For example, a process of selectively displaying a predetermined item from the status data from the transmission conversion unit 320 is performed. You may make it perform. In the present embodiment, the status display is stored in the operation display storage unit 315 for one unit, and the storage location corresponds to the item. Therefore, the display can be performed according to the use environment of the system, the user's request, etc. The items to be changed can be easily changed.

Embodiment 3 FIG.
In the first embodiment described above, a signal including special control function setting data is transmitted from the centralized management control device 300 to the refrigerator-side controller 110 and the cooler-side controller 210. However, the present invention is not limited to this. For example, the cooler-side controller 210 receives a signal including special function control data related to the refrigerator 200 from the centralized management control device 300, performs processing, etc., and then transmits the signal to the refrigerator-side controller 110. Good.

  The procedure in the above-described embodiment is suitable for a refrigeration / refrigeration system for cooling an object, but is not limited to a system for low temperature, and may be applied to a system using another refrigeration cycle. Can do.

  100A, 100B Refrigerator, 110 Refrigerator side controller, 111 Refrigerator side control means, 112 Refrigerator side communication means, 113 Refrigerator side storage means, 113A Regulation control condition storage section, 113B Special control condition storage section, 113C Operation data Storage unit, 200A, 200B cooler, 210 cooler side controller, 211 cooler side control unit, 212 cooler side communication unit, 213 cooler side storage unit, 213A regulation control condition storage unit, 213B special control condition storage unit, 213C operation data storage unit , 300 centralized management control device, 310 operation display unit, 311 touch panel, 312 display, 313 operation display communication unit, 314 operation display control unit, 315 operation display storage unit, 320 transmission conversion unit, 321 management control unit, 322 management side Communication means 323 Stem-side communication unit, 324 management storage unit, 330 communication line, 400 remote controller, 500 centralized transmission line, 600 transmission line 700A, 700B refrigerant pipe.

Claims (5)

One or more refrigerator-side control devices that respectively control one or more refrigerators, one or more cooler-side control devices that respectively control one or more cooling devices, the refrigerators in the system, and Communication with a centralized management control device for managing the cooling device is possible,
The central management control device includes management control means for creating data related to setting of special function control for performing control according to control conditions and / or operation schedules for the refrigerator and the cooling device according to a control purpose; Management communication means for communicating with the refrigerator side control device and the cooler side control device,
Further, the refrigerator-side control device and the cooler-side control device in the system each have device-side storage means for storing data relating to a predetermined prescribed control setting, and data relating to the special function control setting. Refrigeration / refrigeration characterized by controlling the refrigerator or the cooling device to be controlled based on the setting of the prescribed control stored in the device-side storage means system. The refrigerator side control device and the cooler side control device are:
While communication with the centralized management control device is not possible, perform processing to store data related to operation of the controlled refrigerator or the cooling device in the device-side storage means,
2. The refrigeration / refrigeration system according to claim 1, wherein when the communication is determined to be restored, a signal including the stored data relating to the operation is sent to the central management control device. The centralized control device is
An operation display unit having an instruction input means for inputting an operation instruction and a display means for displaying;
The refrigeration / refrigeration system according to claim 1 or 2, wherein the management control unit and a transmission conversion unit having the management communication unit are connected by a communication line. The operation display unit further includes an operation display storage unit that predetermines an area for storing data for each item regarding data representing a state relating to the refrigerator and the cooling device,
When the transmission conversion unit is requested by the operation display unit for data indicating the state of the refrigerator or the cooling device, the data indicating the state of the refrigerator or the cooling device according to the request and the storage area The refrigeration / refrigeration system according to claim 3, wherein a signal that associates with is transmitted.   The special function control is at least one control among an energy saving control function, a comfort control function, and a maintenance / service function, and the management control means is a data relating to the setting of the special function control based on the control mechanism. The refrigeration / refrigeration system according to any one of claims 1 to 4, wherein

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