Air supplementing device and compressor

Abstract

The invention belongs to the technical field of air conditioner compressors, and discloses an air supplementing device and a compressor. The air supplementing device comprises a valve disc, a spraying disc and an injection valve plate, wherein the valve disc is arranged in a rear cover, and via holes are formed in the valve disc; the spraying disc is arranged in the rear cover, a receding groove is formed in the side, close to the valve disc, of the spraying disc, guide columns are arranged at the side, away from the valve disc, of the spraying disc in a protruding manner, the guide columns are connected to a static disc of the compressor in an inserted manner, a spraying channel is formed in each guide column, and an air supplementing and intake cavity is formed among the rear cover, the valve disc and the static disc; and the injection valve plate is arranged between the valve disc and the injection disc and attached to the valve disc, a movable plate is arranged on the injection valve plate, and the movable plate, the valve disc and receding grooves form a one-way valve structure, so that an air supplementing refrigerant entering from an air supplementing opening sequentially passes through the air supplementing and air intake cavity, the via holes and the one-way valve structure and enters the static disc through the injection channels. According to the air supplementing device, the refrigerant is directly guided into a compression cavity of the compressor through the air supplementing device, so that the compressor obtains higher heating capacity in a low-temperature environment.

Description

technical field [0001] The invention relates to the technical field of air conditioner compressors, in particular to an air supply device and a compressor. Background technique [0002] In the automotive field, compressors are generally used as equipment for compressing refrigerants. Unlike traditional fuel vehicles, since electric vehicles do not have engines, most of them use PTC heating, which has low heating efficiency. Therefore, it is necessary to use a heat pump system to meet the heating demand of the vehicle in a low-temperature environment. Therefore, in addition to the cooling requirements, the low-temperature heat pump electric compressor also needs to provide a large heating capacity and high efficiency in a low-temperature environment. However, at present, in the low temperature environment below -20°C, the ordinary electric scroll compressor has insufficient heating capacity due to low suction pressure, high discharge temperature, low working efficiency, and l...

AI Technical Summary

Problems solved by technology

However, at present, in the low temperature environment below -20°C, the ordinary electric scroll compressor has insufficient heating capacity due to low suction pressure, high discharge temperature, low working efficiency, and long-term operation will increase the wear between mechanical parts , refrigeration oil failure and other issues

[0003] In order to solve this problem, the existing compressors use the air supply assembly to realize the air supply function. The air supply assembly includes a cover plate, a one-way valve, a gasket and bolts. Variation, more production processes, resulting in higher production costs

At the same time, the one-way valve structure leads to excessive pressure drop, causing delay in air supply and affecting compressor efficiency

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