Rolling rotor refrigeration compressor with function of preventing liquid impact

Abstract

The invention discloses a rolling rotor refrigeration compressor with a function of preventing liquid impact, which is used for guaranteeing the normal work of a refrigeration compressor and the good operation of a refrigeration system, reducing equipment investment and saving energy. A right end cover is provided with a suction hole communicated with a suction pipe. A cover plate is provided with an exhaust hole which is provided with an exhaust valve. A bypass port is arranged beside the exhaust valve. The distance between the exhaust hole and a slip sheet is less than the distance between the bypass port and the slip sheet. An exhaust cavity is arranged between a left end cover and the cover plate. The left end cover is provided with an exhaust through hole communicated with the exhaust cavity. The position on the left end cover, corresponding to the bypass port on the cover plate, is provided with a spring groove. A bypass valve plate jacking spring which makes a round bypass valve plate jacked on the bypass port is arranged in the spring groove. The bypass valve plate jacking spring, the round bypass valve plate and the corresponding positions of the left end cover and the cover plate form a bypass valve. The rolling rotor refrigeration compressor disclosed by the invention can prevent liquid impact accident, guarantee the reliability of the refrigeration compressor and the operation performance of the refrigeration system, reduce cost, and save energy. Besides, the invention is safe and reliable.

Description

technical field [0001] The invention relates to a rolling rotor refrigeration compressor with the function of preventing liquid shock. Background technique [0002] The exhaust valve of the rolling rotor refrigeration compressor controls the exhaust of the refrigerant gas. If the control of the thermal expansion valve of the refrigeration system fails or delays reflection, the amount of refrigerant liquid supplied to the evaporator is too large, and the liquid absorbed by the evaporator is cooled. The heat load of the space is reduced, and the refrigerant liquid is not completely evaporated, especially for the rolling rotor refrigeration compressor that uses high pressure on the shell side to supply lubricating oil, the suction connecting pipe is directly connected to the suction hole, and the low temperature and low pressure from the evaporator The refrigerant directly enters the volume space, which will cause the liquid of the refrigerant to enter the volume space of the r...

AI Technical Summary

Problems solved by technology

[0002] The exhaust valve of the rolling rotor refrigeration compressor controls the exhaust of the refrigerant gas. If the control of the thermal expansion valve of the refrigeration system fails or delays reflection, the amount of refrigerant liquid supplied to the evaporator is too large, and the liquid absorbed by the evaporator is cooled. The heat load of the space is reduced, and the refrigerant liquid is not completely evaporated, especially for the rolling rotor refrigeration compressor that uses high pressure on the shell side to supply lubricating oil, the suction connecting pipe is directly connected to the suction hole, and the low temperature and low pressure from the evaporator The refrigerant directly enters the volume space, which will cause the liquid of the refrigerant to enter the volume space of the rolling rotor refrigeration compressor together with the gas. Due to the poor compressibility of the liquid, the pressure in the volume space rises sharply. The bearing capacity of the air valve assembly causes the fracture of the connecting parts between the exhaust valve assembly and its positioning element, causing damage to the exhaust valve, causing serious liquid shock accidents, the compressor cannot work normally, or even scrapped, and the refrigeration system is forced to stop running. Cause irreparable losses and increase equipment investment costs, waste of resources

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