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Cooling storage control device and control method

A technology of a control device and a control method, which is applied to household refrigeration devices, lighting and heating equipment, household appliances, etc., can solve problems such as cooling, evaporator 16 not being ventilated, and poor cooling of counters, so as to extend the defrosting cycle and reliability high effect

Active Publication Date: 2018-07-13
SAGINOMIYA SEISAKUSHO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If defrosting is performed at the same time interval as in the ON / OFF control, it is considered that the evaporator 16 is in a non-ventilating state, resulting in poor cooling
In addition, in the case of counters used in stores such as supermarkets and convenience stores, it becomes a big problem if the counter is not cooled properly during business hours.

Method used

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  • Cooling storage control device and control method
  • Cooling storage control device and control method
  • Cooling storage control device and control method

Examples

Experimental program
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Embodiment Construction

[0052] Hereinafter, embodiments (examples) of the present invention will be described in more detail based on the drawings.

[0053] In addition, the structure of the counter 30 provided with the control device 22 in this Example is basically the same structure as the above-mentioned conventional counter 30.

[0054] figure 2 It is a schematic structural diagram for explaining the structure of the control apparatus 22 of this embodiment.

[0055] The control device 22 includes a microcomputer 50 for performing arithmetic processing of PID control, etc., a power input terminal 52 for receiving operating power, a temperature sensor input terminal 54 for inputting temperature signals from the temperature sensors 18 , 20 , 40 , and 42 , And a control output terminal 56 for outputting control signals to the expansion valve 14, the fan 38, the defrosting heater 24, and lighting.

[0056] In addition, for example, a communication terminal 58 and a display unit 60 can also be provi...

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PUM

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Abstract

The present invention provides a control device and a control method for a cooling room, which can keep the temperature inside the room constant by performing constant control of the temperature inside the room by PID control during constant temperature cooling, and can prevent the growth of frost in the evaporator, which can reduce the need for cooling. The frequency of defrosting and extending the defrosting cycle time. In the internal temperature constant control, the heat supply process of opening the expansion valve for a predetermined heat supply time to enter the heat supply state and the heat shutoff process of closing the expansion valve for a predetermined heat shutoff time are alternately repeated. .

Description

technical field [0001] The present invention relates to a control device and a control method for a cooling room which are installed in a cooling room such as a freezer counter or a refrigerated counter in a store, and which suppress frosting on an evaporator of the cooling room and prevent a decrease in cooling capacity. Background technique [0002] In shops such as supermarkets and convenience stores, counters such as freezer counters and refrigerated counters for displaying products in a frozen or refrigerated state are used. [0003] Such as figure 1 As shown, this counter 30 has a display rack 32 for displaying goods, an air outlet 34 for blowing cold air to the display rack, and a suction port with a fan 38 for sucking air from the display rack and circulating the sucked air in the counter 30 36. [0004] In addition, in the counter 30, a general refrigerating cycle is used, and it is provided with: a pipe 12 through which the refrigerant flows; and the evaporator ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25D29/00
Inventor 木内信行萩坂悠树松野博和
Owner SAGINOMIYA SEISAKUSHO INC
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