Vortex compressor and operating mode thereof

Abstract

The invention relates to a vortex type compressor and an operation mode thereof, and the vortex type compressor includes a shell, a non-revolution vortex piece, a revolution vortex piece, a rack, a driving crankshaft, an installing mechanism and a cross slip ring; when the non-revolution vortex piece is assembled with the shell, an elastic exhaust pressure back pressure cavity for discharging gas is encircled corporately at the back side of the non-revolution vortex piece by the sealing of a seal assembly, the back side of the non-revolution vortex piece is pressed and contacted with the inner wall of the exhaust pressure back pressure cavity by the seal assembly in a sliding way, the non-revolution vortex piece is sheathed on a flexible assembly in the installing mechanism, and can slide up and down and move axially in a certain range. By taking the spring force as a third pressing force to be exerted on the back side of the non-revolution vortex piece, the optimization of the contact force between the end surfaces of the non-revolution vortex piece and the revolution vortex piece as well as the holding power of the back side of the revolution vortex piece is realized under the condition that no intermediate pressure is exerted on the back side of the non-revolution vortex piece. The vortex type compressor and the operation mode thereof have low manufacture cost and high working efficiency.

Description

technical field [0001] The present invention relates to a scroll compressor and its operation method. In addition to the first downward axial pressing force and the second downward pressure generated by the suction pressure back pressure chamber and the discharge pressure back pressure chamber separated by the sealing assembly In addition to the two axial pressing forces, the spring force generated by the compression of several springs is used as the third axial pressing force. Background technique [0002] Existing scroll compressors include a non-revolving scroll with a scroll crimp on the bottom plate and an orbiting scroll with a scroll curl on the end plate, and the two scrolls face each other Meshing configurations compress fluid entering a scroll compressor by sequentially constricting a plurality of compression chambers formed between mutual curls. During the compression process, the fluid generates an axial force that separates the orbiting scroll and the non-orbit...

AI Technical Summary

Problems solved by technology

Since the high-pressure exhaust pressure cannot follow the change of the suction pressure, when the working conditions change, if the scroll is closely contacted when the pressure ratio is small, there will be a considerable excess pressure when the pressure ratio is large, making the The contact force on the end surface of the scroll is seriously deteriorated, and because the back side of the orbiting scroll is low-pressure suction pressure, the upward supporting force generated by it is much smaller than the exhaust pressure and suction pressure on the back side of the non-orbiting scroll. Therefore, the pressure of the orbiting scroll against the frame is increased, and the friction power consumption is greatly increased, resulting in a significant decrease in performance and reliability

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