Rotary compressor and heat exchange system therewith

Abstract

The invention discloses a rotary compressor and a heat exchange system thereof. The rotary compressor includes a liquid accumulator, a housing, a compression mechanism, an air injection pipe, and a switching device. The switching device has a first valve port, a third valve port, a second valve port, and a fourth valve port that can be selectively connected or disconnected. The valve port and the fifth valve port, the first valve port communicates with the liquid reservoir, the second valve port communicates with the second slide slot, the third valve port communicates with the discharge port, the fourth valve port communicates with the jet pipe, and the fifth valve port communicates with the second slide groove. The valve port is connected with the second air injection port. When the switching device is in the full load state, the second valve port is connected with the third valve port and the fourth valve port is connected with the fifth valve port. When the switching device is in the partial load state, the second valve port is connected with the The first valve port is connected and the fourth valve port is disconnected from the fifth valve port. According to the rotary compressor of the present invention, it can not only operate with two cylinders under full load state, but also can operate with single cylinder under partial load state, has high operating efficiency, wide application range, and good low-temperature heating effect.

Description

technical field [0001] The invention relates to the technical field of heat exchange, in particular to a rotary compressor and a heat exchange system with the rotary compressor. Background technique [0002] In the rotary compressor in the related art, in a low-temperature environment, the capacity of the refrigeration cycle system is reduced due to the decrease of the evaporation temperature of the refrigerant, and the performance of the rotary compressor is poor. For this reason, some double-cylinder air-injection enthalpy-increasing compressors have appeared. However, when the compression load is small, the two-cylinder air-injection enthalpy-increasing compressors are still in the dual-cylinder operation mode, resulting in poor operating efficiency of the compressor. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, the present invention needs to provide a rotary co...

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Problems solved by technology

[0002] In the rotary compressor in the related art, in a low temperature environment, due to the decrease of the refrigerant evaporation temperature, the capacity of the refrigeration cycle system is reduced, and the performance of the rotary compressor is poor.

For this reason, some double-cylinder air-injection enthalpy-increasing compressors have appeared. However, when the compression load is small, the two-cylinder air-injection enthalpy-increasing compressors are still in the dual-cylinder operation mode, resulting in poor operating efficiency of the compressor.

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