Refrigerating system and operation method for preventing wet compression of compressor of refrigerating system

Abstract

The invention discloses a refrigerating system and an operation method for preventing the wet compression of the compressor of the refrigerating system. The refrigerating system comprises a main circulation circuit, the main circulation circuit comprises a refrigerant pipeline as well as the compressor, a condenser, a throttle component, an evaporator and a gas-liquid separator which are connected in sequence through the refrigerant pipeline, the gas-liquid separator comprises a liquid refrigerant outlet, the refrigerating system further comprises a migration flow circuit, the migration flow circuit comprises a migration device used for transferring liquid refrigerant from the inlet end of the migration flow circuit to the outlet end of the migration flow circuit, the inlet end of the migration flow circuit is connected with the liquid refrigerant outlet of the gas-liquid separator, and the outlet end of the migration flow circuit is connected between the exhaust port of the compressor and the inlet of the evaporator on the main circulation circuit. The refrigerating system can effectively prevent excessive low-pressure liquid refrigerant and wet compression of the compressor, thereby prolonging the service life of the compressor and improving the operation effectiveness and safety of the refrigerating system.

Description

technical field [0001] The invention relates to air-conditioning, refrigeration and heating equipment, in particular to a refrigeration system and an operation method for preventing wet compression of a compressor of the refrigeration system. Background technique [0002] Typical refrigeration systems in the prior art such as figure 1 shown. The refrigeration system includes a main circulation loop, which includes a refrigerant pipeline and a compressor 1, an oil separator 2, a one-way valve 3, a four-way valve 4, an outdoor heat exchanger 5, and a throttling valve that are sequentially connected through the refrigerant pipeline. Component 6, indoor heat exchanger 7 and gas-liquid separator 8. By switching the four-way valve 4, the refrigeration system can realize two working modes of refrigeration cycle and heating cycle. [0003] The refrigeration system of the above prior art can guarantee the safety and effectiveness of operation under certain operating conditions. H...

AI Technical Summary

Problems solved by technology

This method is relatively common, but if the original liquid refrigerant in the low-pressure system, especially the gas-liquid separator, is too much, the compressor will also be in a wet compression state for a long time

[0006] 2. Use the air bypass method to increase the superheat of the refrigerant entering the compressor, but this method will lose more energy

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