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JP-7856914-B2 - Remote control devices, refrigeration systems

JP7856914B2JP 7856914 B2JP7856914 B2JP 7856914B2JP-7856914-B2

Inventors

  • 別當 譲
  • 近藤 東

Assignees

  • ダイキン工業株式会社

Dates

Publication Date
20260512
Application Date
20240730

Claims (12)

  1. A remote control device that receives input to a refrigeration system that includes a compressor, an external heat exchanger, an expansion valve, and an internal heat exchanger, and which cools the inside of a storage compartment, It has a display unit and a control unit, The control unit acquires the internal temperature of the storage compartment and stores the internal temperature and the time information on which the internal temperature was acquired in the storage unit of the remote control device. The history of the internal temperature stored in the storage unit is displayed on the display unit . After receiving an operation to stop the remote control device, or during the defrosting period when the refrigeration device is defrosting, the control unit shall not store the internal temperature in the storage unit. Remote control device.
  2. The control unit displays the history of the internal temperature on the display unit for each day on which the internal temperature was acquired. The remote control device according to claim 1.
  3. The control unit receives the range of the internal temperature history to be displayed on the display unit, The history of the internal temperature within the range that has been received is displayed on the display unit. The remote control device according to claim 1 or 2.
  4. The storage unit stores the internal temperature of the storage unit for the past N days. The control unit causes the display unit to display the history of the internal temperature for up to the past N days. The remote control device according to claim 3.
  5. The control unit displays the history of the internal temperature in a graph with the time information on the horizontal axis. The remote control device according to claim 1.
  6. The control unit obtains from the refrigeration device whether the compressor is operating or stopped, and stores it in the storage unit in association with the time information. If the temperature inside the chamber changes to meet predetermined conditions while the compressor is operating, a message indicating that the temperature inside the chamber has met predetermined conditions will be displayed. The remote control device according to claim 1.
  7. The control unit displays the history of the internal temperature on a graph with the time information on the horizontal axis, and also displays a defrosting period image corresponding to the time information, representing the defrosting period. The remote control device according to claim 1.
  8. The aforementioned defrosting period image shows the defrosting period of the internal heat exchanger. The remote control device according to claim 7 .
  9. The aforementioned defrosting period image shows the defrosting period of the external heat exchanger. The remote control device according to claim 7 .
  10. The aforementioned defrosting period images differ between the defrosting period for the internal heat exchanger and the defrosting period for the external heat exchanger. The remote control device according to claim 7 .
  11. The control unit displays the history of the internal temperature on a graph with the time information on the horizontal axis, and also displays an image corresponding to the time information indicating whether the compressor is operating or stopped. The remote control device according to claim 1.
  12. A refrigeration system comprising the remote control device described in claim 1 and a refrigeration device.

Description

This disclosure relates to a remote control device and a refrigeration system. Refrigeration equipment is used in storage facilities where low temperatures must be maintained, such as cold storage warehouses. Hygiene management methods such as HACCP require managers to record the history of internal temperatures. This makes it easier to ensure that the quality of goods within the storage facility is maintained in accordance with standards. Patent Document 1 discloses a remote control device having a display unit that displays information related to a refrigeration system, such as the internal temperature. Patent No. 6664174 This is a schematic diagram of a refrigeration system.This diagram shows an example configuration of an indoor unit and an outdoor unit.This figure shows an example of a user interface for a remote control device.This figure shows an example of the hardware configuration of the remote control unit.This is an example of a functional block diagram that shows the functions of a remote control device in a block-like structure.This diagram schematically shows the information stored in the information storage unit.This is an example of a flowchart illustrating the process or operation by which a remote control device records information.This figure shows an example of the display of the internal temperature history shown on the remote control device's display.This figure shows an example of a trend graph of the internal temperature displayed on the remote control unit.This figure shows an example of displaying average temperature, maximum temperature, and minimum temperature along with a trend graph.This figure shows an example of a notification mark that appears when the internal temperature changes to meet certain conditions.This figure shows an example of a trend graph displaying the on or off periods of the compressor.This is an example of a flowchart illustrating the process or operation of a remote control device that displays the history of the internal temperature. The following describes an example of a form for implementing this disclosure: a remote control device capable of communicating with a refrigeration system, and the display method performed by this remote control device. <Schematic configuration> Figure 1 is a schematic diagram of the refrigeration system 1. The refrigeration system 1 has one set of "control device, internal unit, and external unit" for one storage compartment SP. In the following, any control device from among the control devices 50a to 50c will be referred to as control device 50, any internal unit from among the internal units 12a to 12c will be referred to as internal unit 12, and any external unit from among the external units 11a to 11c will be referred to as external unit 11. Any temperature sensor from among the temperature sensors 61a to 61c will be referred to as temperature sensor 61. In some cases, the internal unit and external unit together will be referred to as the "refrigeration system". Any refrigeration system from among the refrigeration systems 10a to 10c will be referred to as refrigeration system 10. The control device 50 controls the temperature of the storage compartment SP based on the set temperature transmitted from the remote control device 30. The storage compartment SP can be any space, such as a refrigerator, freezer, cold storage warehouse, or display case. It can be a relatively small space like a device, or a relatively large space like a warehouse. Note that Figure 1 shows three storage compartment SPs, but this is just an example. There may be two or fewer storage compartment SPs, or four or more. Furthermore, multiple refrigeration devices 10 may be installed in a single storage compartment SP. As shown in Figure 1, one control device 50 is connected to an internal unit 12, an external unit 11, and a temperature sensor 61. The internal unit 12 and the external unit 11 are connected by refrigerant piping 18. Note that one external unit 11 may be connected to multiple internal units 12 via refrigerant piping 18. However, by configuring one internal unit 12 to be paired with one external unit 11, the number of storage units SP where temperature control becomes difficult in the event of an external unit 11 failure can be limited to one. Each control unit 50 is connected to a common remote control device 30 via wired or wireless communication. The one-to-many connection between the remote control device 30 and the control units 50 allows the administrator to set the temperatures of multiple refrigeration units 10 in a single operation by operating one remote control device 30. However, a separate remote control device 30 may exist for each control unit 50. Furthermore, the remote control device 30 may be connected only to the master control unit 50 described later. The control device 50 is a controller that controls the indoor unit 12 and the outdoor unit 11, and is equipped with information processing functions such as a mic