Variable-displacement rotary swash plate compressor

Abstract

The invention provides a variable-displacement rotary swash plate compressor. The variable-displacement rotary swash plate compressor is characterized in that a cylinder block is connected with a rear cover through a valve plate assembly, the middle of the rear cover is provided with a suction cavity and an exhaust cavity, a circular partition rib is arranged between the suction cavity and the exhaust cavity, a silencing cavity is arranged in the middle of the exhaust cavity, and a check valve is arranged between the circular partition rib and the silencing cavity; the bottom end face of a suction port of the cylinder block is an inclined drag reduction face. Due to the fact that the silencing cavity and the check valve are arranged in the exhaust cavity of the rear cover, high-pressure air flows passing through the inner side and the outer side of the rear cover can flow more stably, back flowing is avoided, and air flow noise is weakened; owing to the inclined drag reduction face arranged at the bottom end of the suction port of the cylinder block, air flows in different directions tend to be uniform after air enters the suction port and flows through the drag reduction face, the air flows are orientated, resistances of the air flows are reduced, and accordingly power consumption is reduced, and energy efficiency of the compressor is improved.

Description

technical field [0001] The invention relates to an automobile air-conditioning compressor, in particular to a variable-displacement swash plate compressor. [0002] Background technique [0003] In the refrigeration system of the automobile air conditioner, the variable displacement swash plate compressor controls the change of the displacement through the change of the angle of the swash plate during the working process. Therefore, the variable-displacement swash-plate compressor has high requirements on the pressure change of the air-conditioning and refrigeration system, the resistance of the gas flow, and the direction control during the working process. If the control is not good, it will cause the pulsation of the air flow, which will affect the operation of the compressor. noise and vibration etc. [0004] Such as figure 1 , figure 2 As shown, the suction chamber of the traditional variable displacement swash plate compressor cylinder 1 is a square suction chambe...

AI Technical Summary

Problems solved by technology

Therefore, the variable-displacement swash-plate compressor has high requirements on the pressure change of the air-conditioning and refrigeration system, the resistance of the gas flow and the direction control during the working process. If the control is not good, the pulsation of the air flow will be caused, which will affect the operation of the compressor. noise and vibration

[0004] like figure 1 , figure 2 As shown, the suction chamber of the traditional variable displacement swash plate compressor cylinder 1 is a square suction chamber 1-1, and the resistance of the gas flow during the operation of the compressor is relatively large, which will increase the power consumption of the compressor reduce its efficiency

And the direction of the gas changes after being resisted, resulting in increased noise and vibration of the compressor, which affects its comfort and life

In addition, the suction and exhaust chambers of the rear cover 7 are separated by the quincunx-shaped partition profile 7-1, which results in longer sealing lengths and increases the risk of leakage

The quincunx-shaped separation contour 7-1 determines that the exhaust valve plate limit plate can only be made of metal structure. When the compressor is working, the metal surface slaps on the metal surface, which increases the noise of the compressor and reduces the life of the compressor.

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