Single-cylinder rolling rotor compressor with middle air replenishing structure

Abstract

The invention discloses a single-cylinder rolling rotor compressor with a middle air replenishing structure. The compressor comprises an air cylinder, a rotor and a sliding plate, wherein an air suction port and an exhaust port are formed in the air cylinder; an exhaust valve block is arranged on the air exhaust outlet; the middle air replenishing structure comprises a refrigerant injection channel, an injection one-way valve and a lift limiter that are arranged in the sliding plate; the lift limiter is used for limiting the opening of the one-way valve; the injection one-way valve is mounted at an outlet of the refrigerant injection channel; an injection port is formed between the sliding plate and the air cylinder; the upper edge of the injection port is positioned in a connection line of intersection points between an air cylinder wall and a wall surface of a movement channel of the sliding plate; and the lower edge of the injection port is positioned at the upper end part of a circular part of the top end of the sliding plate. The traditional air replenishing structure has the defects that replenished air flows back to an air suction pipe due to the fact that the air suction port is directly communicated with an air replenishing port at the beginning of air replenishing, thereby reducing the effective air suction capacity of the compressor from an evaporator, and reducing the volumetric efficiency of the compressor. The novel air replenishing structure completely avoids the problem of replenished air backflow, effectively increases the air replenishing quantity, and improves the refrigeration and heating capacities of the compressor.

Description

technical field [0001] The invention relates to a single-cylinder rolling rotor compressor with an intermediate gas supply structure, in particular to a single-cylinder rolling rotor compressor, which belongs to the technical field of compressors. Background technique [0002] Rolling rotor compressors have the advantages of high efficiency, flexibility, and portability, so they are widely used in small household air conditioners and other fields. With the continuous application of air source heat pumps, higher requirements are placed on the heating capacity and performance coefficient of compressors at low temperatures. The current rolling rotor compressor has a series of problems at low temperature: 1) The pressure ratio of the compressor increases, the leakage increases, the volumetric efficiency decreases, and the exhaust temperature increases, resulting in serious COP attenuation and reduced reliability of the compressor; 2) ) The suction volume is reduced, and the cir...

AI Technical Summary

Problems solved by technology

The current rolling rotor compressor has a series of problems at low temperature: 1) The pressure ratio of the compressor increases, the leakage increases, the volumetric efficiency decreases, and the exhaust temperature increases, resulting in serious COP attenuation and reduced reliability of the compressor; 2) ) The suction volume is reduced, and the circulation flow is insufficient, resulting in a reduction in the heating capacity of the air conditioner

Therefore, the volumetric efficiency of the compressor is reduced to a certain extent

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