Mechanical temperature control refrigerator refrigeration system capable of quickly freezing and closing cold room and control method

Abstract

The invention relates to a mechanical temperature control refrigerator refrigeration system capable of quickly freezing and closing a cold room and a control method. In the refrigeration system, a bypass solenoid calve is arranged between the outlet end of a condenser and a main loop capillary tube; and a bypass outlet end of the bypass solenoid calve is connected with the inlet end of a freezing evaporator by a bypass capillary. The refrigeration system is characterized in that a temperature controller of the cold room is set into a double contact temperature control conversion switch which can be manually controlled and a temperature controller of a freezing room is set into a temperature control double-pole double-throw switch which can be manually controlled; and a contact a of the temperature controller of the cold room and a switch d of the temperature controller of the freezing room are connected in series in a power circuit of a solenoid valve coil, and a contact b of the temperature controller of the cold room and a switch c of the temperature controller of the freezing room are connected in parallel and then connected in a power circuit of a compressor M is series. The invention can realize double temperature and double control for the mechanical temperature control of a direct refrigerator and the closing function of the cold room and the quick freezing function of the freezing room, greatly improve the refrigeration capability of the refrigerator and save energy.

Description

technical field [0001] The invention relates to a refrigerating system of a mechanical temperature-controlled direct-cooling refrigerator or similar refrigerating appliances. Background technique [0002] In the prior art, for mechanical temperature-controlled direct-cooling refrigerator-freezers, the refrigeration system adopts a refrigerating room evaporator and a freezing room evaporator connected in series, and the mechanical thermostat installed in the refrigerating room controls the start and stop of the compressor to realize Refrigerator and freezer are refrigerated synchronously. Because the temperature of the refrigerating room cannot be lower than 0°C, and the refrigerating room and the freezing room can only be refrigerated synchronously, the freezing capacity of the refrigerator cannot be improved, that is, the ability to freeze food is low; at the same time, in this structural form, the refrigerating room cannot Closing it separately brings about an increase in...

AI Technical Summary

Problems solved by technology

Because the temperature of the refrigerating room cannot be lower than 0°C, and the refrigerating room and the freezing room can only be refrigerated synchronously, the freezing capacity of the refrigerator cannot be improved, that is, the ability to freeze food is low; at the same time, in this structural form, the refrigera

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