Self-cooling type air suspension air compressor with air storage function

Abstract

The invention discloses a self-cooling type air suspension air compressor with an air storage function. The self-cooling type air suspension air compressor with the air storage function comprises a combined air compressor impeller, an air compressor volute, a cooling turbine, a heat pipe heat exchanger, an air storage cavity, an air bearing assembly, an air compressor shell and a direct current brushless motor. A rotor is coaxially connected with the combined air compressor impeller and the cooling turbine through a rotor core shaft. A thrust bearing assembly and a radial bearing assembly aresequentially arranged on the left side of the direct current brushless motor. The thrust bearing and the radial bearing are foil piece type hydrodynamic gas-lubricated bearings. According to the self-cooling type air suspension air compressor with the air storage function, high-pressure gas stored in the gas storage cavity is controlled to enter an air bearing assembly through the normally open electromagnetic valve during start-stop so as to prolong the time of a dynamic pressure gas film in the start-stop phase, thereby reducing the surface friction between the gas bearing and a rotating shaft to achieve the purpose of prolonging the service life of the gas bearing, and the self-cooling type air suspension air compressor with the air storage function has the advantages of large bearing capacity of the rotating shaft, less friction heat generation, more stable performance and the like by adopting a novel rotating shaft cooling mode.

Description

technical field [0001] The invention relates to an air suspension compressor, in particular to a self-cooling air suspension compressor with an air storage function. Background technique [0002] The centrifugal compressor is a type of compressor widely used, and the existing centrifugal compressor generally includes an impeller, a diffuser and a volute. Due to the high-speed rotation of the impeller, the gas enters the volute, and is discharged out of the volute after passing through the channel and the volute chamber, and the air is compressed through this process. The core equipment driving the rotation of the compressor is a DC brushless motor. The rotor shaft of the DC brushless motor is supported by radial bearings and thrust bearings. The friction and lubrication performance of the bearings are crucial to the performance of the compressor. Ball bearings have high friction and wear, short service life, and are not suitable for high-speed working conditions. The techno...

AI Technical Summary

Problems solved by technology

Due to the start-stop stage of the compressor, the rotation speed of the rotating shaft decreases and the wedge-shaped action cannot form an effective dynamic pressure gas film that can support the suspension of the rotating shaft, which will cause surface contact between the rotating shaft and the dynamic pressure gas bearing to cause surface friction and generate a lot of heat. Carbon deposits will appear on the top foil of the air foil, which will cause damage to the bearing or shaft in the long run

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