Compressor and assembling method thereof

Abstract

The invention discloses a compressor and an assembling method thereof. The compressor comprises a shell, a stator, a crankshaft, a rotor rotatably arranged in the stator and a fixing block, wherein afirst key groove is formed in the peripheral side of the end, away from a short shaft, of a long shaft of the crankshaft, a second key groove communicating with the first key groove is formed in the inner wall of the end, away from a compression assembly, of the rotor, a third key groove is formed in the end face, facing the rotor, of the fixing block, a locating cavity is defined by the first keygroove, the second key groove and the third key groove, and a locating key is arranged in the cavity. According to the assembling method, partial deformation of a steel plate in a die-cast rotor coreis avoided, so that the power of a motor is improved; and meanwhile, compared with an existing motor assembly process, the crankshaft and the rotor are matched together in a mechanical connection mode, so that the uniformity of a gap between the stator and the rotor is better guaranteed, and electromagnetic noise generated in the motor operating process is reduced.

Description

technical field [0001] The present invention relates to a technique in the field of refrigeration, and more specifically, relates to a compressor and an assembly method thereof. Background technique [0002] In the compressor of the air conditioner, the motor is the power source for its working refrigeration. It is composed of two parts: the rotor and the stator. It is a device that realizes the conversion between electrical energy and mechanical energy. To make the motor in the compressor work normally, the stator and stator The assembly clearance between the rotors is particularly important. [0003] figure 1 It is a schematic diagram of an assembly structure of an existing air conditioner compressor. refer to figure 1 , During the assembly of the motor rotor 13' of the air conditioner compressor 10', the rotor 13' and the crankshaft 15' are usually interference-fitted using a shrink-fit process. In the assembly of the stator 12' and the rotor 13', we first shrink the ...

AI Technical Summary

Problems solved by technology

[0005] ①In the assembly of the rotor, the rotor is heated and fit together with the long axis of the crankshaft. During the heating process of the rotor, the inner steel plate of the die-cast iron core will be partially deformed and fit together, which will occur during the operation of the motor. Eddy current loss affects motor power;

[0006] ②In the assembly of the stator and the rotor, the gap between the stator and the rotor is thin, the strength is not enough and the fit is uneven, and the pump body will tilt in a single direction when the welding deformation occurs, resulting in the gap between the stator and the rotor after the assembly is completed. Uneven, poor electromagnetic sound occurs during the operation of the motor

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