Scroll assembly, scroll compressor and electrical appliance

Abstract

The present invention relates to the field of scroll compressors. The scroll assembly includes a scroll and a sealing strip. The scroll has spiral teeth. The tooth top of the scroll tooth has a sealing groove extending along the extending direction of the spiral tooth. The sealing strip extends along the extending direction of the sealing groove. The strip is arranged in the sealing groove, and the scroll tooth is provided with a drainage groove, and the drainage groove communicates with the sealing groove and the interdental groove of the scroll. When the scroll assembly is used, the refrigerant in the sealing groove is introduced from the drainage groove, and the pressure of the refrigerant is equal to that of the sealing strip, and the sealing strip floats under the action of the refrigerant pressure until the seal abuts against the matching scroll. Since the pressure of the refrigerant on each part of the sealing strip is equal, as long as the drainage groove at a suitable position is selected to provide the refrigerant with a suitable pressure for the sealing groove, all parts of the sealing strip can be under the appropriate pressure. The lower float is beneficial to avoid the failure of the sealing strip due to excessive wear, and is conducive to ensuring the long-term effective sealing of all parts of the sealing strip.

Description

technical field [0001] The invention relates to the field of scroll compressors, in particular to a scroll assembly, a scroll compressor and an electrical appliance. Background technique [0002] When the scroll compressor is running, multiple independent compression chambers are formed between the orbiting scroll and the fixed scroll, in which the low-pressure chamber sucks the gas to be compressed, and the gas is compressed and discharged from the high-pressure chamber. [0003] During the operation of the scroll compressor, the movable scroll and the fixed scroll move relative to each other. During the compression of the refrigerant, the pressure in each compression chamber is different, resulting in a pressure difference between the refrigerant on both sides of the scroll tooth thickness direction. As a result, the refrigerant easily leaks between the scroll addendum of the fixed scroll and the movable scroll and between the scroll addendum of the movable scroll and the ...

AI Technical Summary

Problems solved by technology

For example, the invention patent application with the publication number CN109058111A discloses a floating axial seal structure. In this solution, a low-pressure sealing section, a medium-pressure sealing section and a high-pressure sealing section are respectively set. However, if the floating pressure of the sealing strip is too large, the It is easy to cause wear, and if the floating pressure on the sealing strip is too small, the sealing performance will be poor

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