Compressor, air conditioning equipment and vehicle

Abstract

The invention belongs to the technical field of compression equipment, and particularly relates to a compressor, air conditioning equipment and a vehicle. The compressor comprises a shell, a first bearing and a crankshaft, the first bearing and the crankshaft are arranged in the shell, one end of the crankshaft is matched with the first bearing in an inserted mode, a pre-tightening part is arranged on the outer wall of one end of the crankshaft, and a pre-tightening cavity is formed between the pre-tightening part and the crankshaft; a circulation channel which allows a high-pressure medium to circulate and communicates with the pre-tightening cavity is formed in the crankshaft, and the outer ring of the first bearing is fixed in the shell. Due to the fact that the pressure of the high-pressure medium can be effectively controlled and adjusted, the pre-tightening force can be effectively controlled and adjusted by providing the pre-tightening force for the pre-tightening piece through the high-pressure medium, the pre-tightening force can be always in a reasonable and controllable range, the service life of the first bearing is considered, and the service life of the second bearing is prolonged. And meanwhile, the working noise of the compressor is effectively reduced.

Description

technical field [0001] The application belongs to the technical field of compression equipment, and in particular relates to a compressor, an air conditioner and a vehicle. Background technique [0002] The air-conditioning system of existing automobiles is usually equipped with a compressor, and the crankshaft in the compressor is generally supported by bearings. Since there is a gap between the rolling elements of the bearing and the inner and outer rings, when the crankshaft rotates at a high speed, the bearing will Greater vibration and noise are generated, which increases the overall operating noise of the compressor and affects user experience. [0003] In order to reduce the occurrence of the above-mentioned noise, the current common practice is to preload the bearing. The existing preload method is: add a compression spring between the crankshaft and the inner ring of the bearing, and limit the inner ring of the bearing and the bearing by the compression spring. Fri...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiment of the present application is to provide a compressor, an air conditioner and a vehicle, aiming to solve the problem that the bearing used to support the crankshaft of the existing compressor is difficult to be effectively pre-tightened, which leads to the difficulty in suppressing the vibration and noise of the bearing and reducing the service life of the bearing technical problem

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