Scroll compressor

Abstract

The invention discloses a scroll compressor. The scroll compressor comprises an upper support and an upper cover, wherein the upper support and the upper cover are connected. A movable scroll plate is arranged in the upper support and in the upper cover. A static scroll plate is coaxially arranged on the side, close to the upper cover, of the movable scroll plate. An elastic circular ring is coaxially arranged on the side, close to the upper support, of the movable scroll plate. The upper support is provided with an inner supporting part and an outer supporting part, wherein the inner supporting part and the outer supporting part are matched with the elastic circular ring. A suspended part is formed between the inner supporting part and the outer supporting part. A back pressure sealing groove is formed in the bottom face of the suspended part. A back pressure sealing ring tightly attached to the elastic circular ring is arranged in the back pressure sealing groove. A back pressure cavity and an air sucking cavity which communicate with the suspended part are formed in the upper support. An exhaust cavity communicating with the back pressure cavity is formed in the upper cover. A compression cavity communicating with the air sucking cavity and the exhaust cavity is formed between the movable scroll plate and the static scroll plate. The scroll compressor is sufficient and reliable in sealing effect, and the technology difficulty of a sealing structure of the scroll compressor is low.

Description

technical field [0001] The invention relates to the technical field of refrigeration system supporting equipment, in particular to a scroll compressor. Background technique [0002] Scroll compressor, as a high-efficiency and energy-saving air energy scroll compressor, has been widely used in commercial multi-connected air-conditioning and refrigeration systems. Especially with the rise of electric vehicles, high-efficiency and energy-saving vehicle air-conditioning systems are becoming more and more important, and electric scroll compressors, as the latest generation of vehicle scroll compressors, will gradually become the standard configuration of electric vehicles. [0003] The stable and reliable sealing of the pump body of the scroll compressor is the prerequisite for realizing the high efficiency and reliability of the scroll compressor. The existing relatively mature solution is to rely on the gas pressure difference generated on both sides of the moving scroll or the...

AI Technical Summary

Problems solved by technology

[0003] The stable and reliable sealing of the pump body of the scroll compressor is the prerequisite for realizing the high efficiency and reliability of the scroll compressor. The existing relatively mature solution is to rely on the gas pressure difference generated on both sides of the moving scroll or the fixed scroll substrate to move the moving scroll The scroll or the fixed scroll pushes against the other to realize the sealing between the sealing surfaces of the moving and fixed scrolls; in addition, some manufacturers in this field divide the sealing surface by setting elastic steel sheets at the sealing surfaces of the moving and fixed scrolls. Back pressure cavity area and suction cavity area, so as to realize reliable back pressure technology, but this structure needs to rely on the end face of the fixed scroll, the sealing steel plate and the end face of the upper bracket to realize the sealing between the back pressure chambers. The compression seal has high requirements on the processing quality of the parts on the sealing end face. At the same time, during the working process of the scroll compressor, the elastic steel sheet will be deformed axially under the action of the back pressure, and the elastic steel sheet is fixed and constrained by the outer periphery. The working state of the middle part is subject to fluctuating loads, which will undoubtedly affect the reliable sealing of the back pressure chamber and adversely affect the stable and continuous operation of related equipment

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