Refrigeration equipment and compressors

Abstract

The invention discloses a refrigeration device and a compressor. The compressor includes a shell, a suction pipe, a discharge pipe and a pressure control valve. Both the suction pipe and the exhaust pipe are passed through the housing. The pressure control valve includes a first valve port, a second valve port and a third valve port. The second valve port can be selectively connected with the first valve port or the third valve port. The third valve port communicates with the suction pipe through the first pipeline, the second valve port communicates with the exhaust pipe through the connecting pipe, the first valve port is suitable for communicating with the heat exchanger through the second pipeline, and the second pipe Some sections of the road are pierced in the casing. According to the compressor of the present invention, by setting the pressure control valve, and making the second pipeline pass through the casing, and using the second valve port to communicate with the exhaust pipe, the installation method of the pressure control valve can be improved, and the pressure control valve can be avoided. The valve is affected by the vibration of the heat exchanger pipeline, and can also balance the pressure difference of the compressor to ensure that the compressor can be restarted quickly, isolate the refrigerant of the high-pressure side heat exchanger, and retain the energy inside the high-pressure side heat exchanger.

Description

Refrigeration equipment and compressors technical field The present invention relates to refrigeration equipment technical field, especially relate to a kind of refrigeration equipment and compressor. Background technique Refrigeration equipment in the related art, when the compressor is shut down from the last operation back to when it can be started again, the compressor The pressure difference between the suction side and the exhaust side must reach a certain required range before restarting, especially for cold For systems with larger media volume equipped with rotary compressors, the pressure difference must reach a small value such as 1kgf / cm2 Otherwise, the compressor will not be able to start, so that the quick restart function after shutdown cannot be realized. However, in order to realize the rapid restart function of the rotary compressor, it is necessary to quickly balance the compressor inlet and the Differential pressure at the exhaust port. The exis...

AI Technical Summary

Problems solved by technology

The disadvantage of this connection method is that the pressure control valve is directly connected to the external heat exchanger and will be affected by the vibration of the external heat exchanger

Since the pressure control valve is a precision structural part, long-term vibration will affect its performance and reliability

[0004] Aiming at this problem, the current solution is to directly weld the main valve body of the pressure control valve on the compressor through some fixed structures (such as brackets and bands), but this solution will bring about the problems of increased cost and complicated processing technology

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