Vortex self-adaptive back pressure structure, compressor and temperature adjusting equipment

Abstract

The invention discloses a vortex self-adaptive back pressure structure, a compressor and temperature adjusting equipment. The vortex self-adaptive back pressure structure comprises a rack, a fixed scroll plate, a movable scroll plate and a one-way valve assembly; an exhaust hole is formed in the middle of the fixed scroll plate; the movable scroll plate is matched with the fixed scroll plate, a back pressure cavity is defined by the rack at the back side of the movable scroll plate, a back pressure flow guide hole is formed in a movable scroll wrap in the middle of the movable scroll plate, afirst opening is formed in the end face of the movable scroll wrap through the back pressure flow guide hole, a second opening is formed in the back pressure side of the movable scroll plate through the back pressure flow guide hole, the back pressure flow guide hole is communicated with or staggered from the exhaust hole in the moving process of the movable scroll plate, and the back pressure flow guide hole is used for guiding residual refrigerants in the exhaust hole into the back pressure cavity after an exhaust valve assembly is closed; and the one-way valve assembly is arranged in the back pressure flow guide hole. Axial gas force borne by the movable scroll plate is well balanced, meanwhile, the residual high-pressure refrigerants in the exhaust hole of the fixed scroll plate are effectively utilized, the repeated compression phenomenon is reduced, and the efficiency of the scroll compressor is effectively improved.

Description

technical field [0001] The invention is used in the field of compressors, and in particular relates to a scroll self-adaptive back pressure structure, a compressor and a temperature adjustment device. Background technique [0002] The scroll compressor is a volumetric compression compressor. The compression part is composed of a movable scroll and a fixed scroll. During the compression process, the relative revolution of the movable and fixed scrolls is used to form a continuous change of the closed volume, realizing The purpose of compressing gas. Because the closed cavity formed when the movable and fixed scroll is engaged has a certain gas pressure, the movable scroll will bear an axial gas force opposite to the direction of the fixed disk during compression. Therefore, most of the existing scroll compressor designs use a back pressure chamber structure, that is, a closed chamber is formed on the back of the moving plate, and the intermediate pressure refrigerant between...

AI Technical Summary

Problems solved by technology

This method has the following disadvantages: when the compressor runs from one compression cycle to the next compression cycle, the through hole will also enter the previous compression chamber, because there is a pressure difference between the front and rear compression chambers, so the back pressure chamber The pressure also fluctuates accordingly, and a part of the refrigerant in the back pressure chamber will flow back and forth between the compression chambers due to pressure changes, resulting in repeated compression, which affects the efficiency of the compressor

This method has the following disadvantages: the design of connecting the exhaust high-pressure chamber and the back-pressure chamber will cause the pressure in the back-pressure chamber to be too high, and a pressure relief valve device needs to be installed in the back-pressure chamber. It flows back into the low-pressure chamber, causing repeated compression, which affects the efficiency of the compressor, and the path between the high-pressure chamber and the back-pressure chamber is too long, requiring many parts to be slotted to cooperate with each other, resulting in high cost and high risk of leakage

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