Vortex compressor

Abstract

The invention discloses a vortex compressor. The vortex compressor comprises a static vortex plate and a dynamic vortex plate, wherein the static vortex plate is meshed with the dynamic vortex plate to form a compression cavity; the rear surface of the dynamic vortex plate is supported on a dynamic vortex plate supporting component; a cross-shaped slide ring is arranged between the dynamic vortex plate and the dynamic vortex plate support component; a backpressure cavity is arranged on the radially-inner side of the cross-shaped slide ring between the dynamic vortex plate and the dynamic vortex plate support component; a pressure fluid is arranged in the backpressure cavity; and a pushing force is generated to the dynamic vortex plate by the pressure fluid, so that axial floating of the dynamic vortex plate is prevented. In the vortex compressor, the axial force generated by the fluid in the backpressure cavity can offset action force borne by the dynamic vortex plate from the static vortex plate and high pressure gas in the compression cavity, so that mutual action force between the dynamic vortex plate and the dynamic vortex plate support component can be lowered, and friction wear between the dynamic vortex plate and the dynamic vortex plate support component is reduced; friction power consumption is reduced; and reliability of the compressor is improved.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a scroll compressor. Background technique [0002] The scroll compressor has the advantages of simple structure, small size, light weight, low noise, high mechanical efficiency and stable operation. However, for scroll compressors with non-floating movable scrolls, during normal operation, the movable scrolls are pressed against the support surface of the upper bracket by the gas pressure in the compression chamber, and the movable scrolls are flattened around the center of the crankshaft with a fixed radius. During dynamic motion, friction will be generated between the back of the movable scroll and the supporting surface of the upper bracket, and the friction will generate high temperature, which will reduce the viscosity of the lubricating oil, that is, reduce the lubricating effect. As time goes by, the contact surface between the movable scroll and the upper bracket wil...

AI Technical Summary

Problems solved by technology

However, for scroll compressors with non-floating movable scrolls, during normal operation, the movable scrolls are pressed against the support surface of the upper bracket by the gas pressure in the compression chamber, and the movable scrolls are flattened around the center of the crankshaft with a fixed radius. During dynamic motion, friction will occur between the back of the movable scroll and the supporting surface of the upper bracket, and the friction will generate high temperature, which will reduce the viscosity of the lubricating oil, that is, reduce the lubricating effect

As time goes by, the contact surface between the movable scroll and the upper bracket will wear out, and the frictional power consumption at the contact surface will gradually increase, which may lead to a decrease in the energy efficiency of the compressor, or worse, with the wear and tear of the two Aggravated, causing damage to other components of the compressor, thus affecting the reliability of the compressor

[0003] In the prior art, in order to solve the problem of wear and tear between the movable scroll and the upper bracket of the scroll compressor, it is common practice to set up an oil groove on the bearing surface of the upper bracket to improve the lubricity between the movable scroll and the upper bracket, thereby reducing the wear, however, due to the high pressure between the movable scroll and the upper bracket, the friction power consumption between the two is still high

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