Refrigeration system and refrigeration control method for cold storage

Abstract

The invention discloses a cold storage refrigerating system and a refrigerating control method, and aims to provide the cold storage refrigerating system and the refrigerating control method which enable cold storages and refrigerating units to run cooperatively. The system comprises the refrigerating units and at least two cold storages; the system further comprises a contact controller; a request signal output end of a temperature controller in each cold storage is connected with a request signal input end of the contact controller; a request signal output end of the contact controller is connected with a request signal input end of a controller of the refrigerating units; a control signal output end of the controller of the refrigerating units is connected with the control signal inputend of the contact controller; and the control signal output end of the contact controller is connected with control signal input ends of electromagnetic valves in the cold storages. According to thecold storage refrigerating system and the refrigerating control method, the contact controller is additionally arranged in the cold storage refrigerating system and is used for realizing communicationbetween the temperature controllers in the cold storages and the controller of the refrigerating units, so that coordination work of the cold storages and the refrigerating system is realized, and shutdown faults caused by too low liquid level in a circulation barrel are avoided.

Description

Technical field [0001] The present invention relates to the technical field of refrigeration, and more specifically, to a refrigeration system and a refrigeration control method for a cold storage for establishing communication between a refrigeration unit and a cold storage. Background technique [0002] In the traditional pump cycle cold storage refrigeration system, the control structure is divided into two parts, one is the control part in the cold storage room, each cold storage room is equipped with a thermostat, and the thermostat compares the cold storage temperature setting value with the cold storage temperature process value To judge the opening and closing of the liquid supply valve, when the thermostat detects that the corresponding cold storage temperature is higher than the set temperature, it controls the corresponding solenoid valve to open. When the set temperature is reached, the thermostat controls the solenoid valve to close. The other part is the control par...

AI Technical Summary

Problems solved by technology

[0005] 1. If the design is designed to meet the refrigeration requirements of each cold storage at the same time, more than half of the refrigeration units will be idle when the refrigeration unit is running, resulting in waste

[0006] 2. The use of the above control method results in a large volume for the circulation barrel, which occupies a large space in the refrigeration room

At the same time, the external surface area of ​​the circulating barrel is large, so more and more effective heat insulation should be done on the circulating barrel to prevent economic losses caused by cold leakage

[0007] 3. Due to the separate electrical control between the refrigeration unit and the cold storage, the cold storage room and the refrigeration unit cannot coordinate operation

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