Compression assembly with dumbbell-shaped rotor for compressor

Abstract

The invention discloses a compression assembly with a dumbbell-shaped rotor for a compressor. The compression assembly comprises a rotor and two symmetrically arranged star wheels, wherein the two star wheels are respectively engaged on the two sides of the rotor; 11 star wheel teeth are arranged on each star wheel; 10 compression grooves are formed in the rotor, each compression groove is screwed towards the exhaust end beginning from the air intake end of the rotor, the radius of the outer circle of the compression groove is firstly reduced and then increased, the radius of the outer circle of the compression groove in the air intake end of the rotor is smaller than the radius of the outer circle of the compression groove in the exhaust end, and the depths of the compression grooves are identical; when the star wheels and the rotor are located at the working engagement state, 5 star wheel teeth on each star wheel are engaged with the compression grooves in the rotor; according to the scheme of the invention, the star wheels with identical dimension and structure are used for increasing the star wheel tooth number when being engaged with the rotor, and increasing the compression travel to improve the basic element volume of the compressor for about 2.75 times and increase the compression ratio for about 1.65 times so as to effectively improve the gas displacement, efficiency and performance of the compressor.

Description

technical field [0001] The present invention relates to the improvement of the parts of a compressor, especially a compression assembly with a dumbbell-shaped rotor for a single-screw compressor that increases the displacement by changing the shape and structure of the rotor so as to improve the efficiency of the compressor. Compressor technology field. Background technique [0002] The single-screw compressor belongs to a new type of rotary compressor. The single-screw compressor 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 slots; the single-screw compressor has the advantages of small size, large capacity, large pressure ratio, low noise and vibrat...

AI Technical Summary

Problems solved by technology

[0003] At present, the rotor used by the single-screw compressor with mature technology is a cylindrical screw rotor with 6 helical compression grooves. The screw rotors are meshed, and the remaining 8 teeth of each star wheel form a waste of resources and space

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