A compression assembly with a screw-shaped rotor for a compressor

Abstract

The invention discloses a compression assembly with a bolt-like rotor for a compressor. The compression assembly comprises the rotor and two symmetrical star wheels, wherein the two star wheels are respectively meshed on the two sides of the rotor; each star wheel is provided with eleven star wheel teeth; the diameter of the rotor is gradually reduced from an air inlet end to an air outlet end at first, and then, the rotor is cylindrical; the rotor is provided with eight compression slots, and each compression slot is spiral along the outer wall of the rotor from the air inlet end to the air outlet end of the rotor; and the radius of the external circle of the compression slot at the air inlet end is larger than the radius of the external circle of the compression slot at the air outlet end, and the depths of the compression slots are equal. When the star wheels and the rotor are in a working meshing state, the four star wheel teeth on each star wheel are meshed with the compression slots in the rotor. According to the technical scheme of the compression assembly, the star wheels with the same size and structure are adopted, and under the condition of the same center distance, the star wheel teeth, meshed with the rotor, increase, and the compression stroke is enhanced, so that the base capacitor volume and the compression ratio of the compressor are respectively enhanced by about 1.88 times and 1.48 times.

Description

technical field [0001] The invention relates to the improvement of a compressor component, in particular to a compression assembly with a screw-shaped rotor for a single-screw compressor that increases the displacement by changing the shape and structure of the rotor to improve the efficiency of refrigeration, and belongs to refrigeration technology field. Background technique [0002] Single-screw refrigeration belongs to a new type of rotary compressor. The single-screw refrigeration includes a compression assembly, such as the attached figure 1 , 2 , 3, its structure is simple, it is made up of a rotor and two symmetrical star wheels, and the two star wheels are respectively meshed on both sides of the rotor; the transmission ratio of the star wheel and the rotor is generally 6:11, that is The star wheel has 11 teeth, and the rotor has 6 compression grooves; the single-screw refrigeration has the advantages of small size, large capacity, large pressure ratio, low noise ...

AI Technical Summary

Problems solved by technology

[0003] At present, the rotor used in the single-screw refrigeration with mature technology is a cylindrical screw rotor with 6 helical compression grooves. During operation, each star Only 3 of the 11 teeth of the wheel mesh with the screw rotor at the same time, and the remaining 8 teeth of each star wheel form a waste of resources and space

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