Air conditioner

Abstract

The invention discloses an air conditioner. The air conditioner comprises a variable-frequency single-rotor compressor, a reversing component, a high-pressure valve and a low-pressure valve, wherein the variable-frequency single-rotor compressor has an exhaust port and an air return port; the reversing component includes a first valve port to a fourth valve port; the first valve port is connected with the exhaust port through an exhaust pipe; the second valve port is connected with the air return port through an air return pipe; the third valve port of the reversing component is connected with the high-pressure valve through a first connecting pipe; the fourth valve port is connected with the low-pressure valve through a second connecting pipe; and after the air conditioner receives a stop instruction, and the operation frequency of the variable-frequency single-rotor compressor is reduced to f1, the variable-frequency single-rotor compressor is stopped, wherein f1 is less than 40 Hz. According to the air conditioner disclosed by the invention, the stress impact of the compressor and system pipelines can be largely reduced, the service life of the compressor and the system pipelines is prolonged, and the reliability of the compressor and the system pipelines is improved.

Description

technical field [0001] The invention relates to the refrigeration field, in particular to an air conditioner. Background technique [0002] At present, 2-horsepower inverter air conditioners on the market have begun to use single-rotor compressors with lower cost and higher production efficiency to replace dual-rotor compressors, but the technology for 3-horsepower inverter air conditioners with single-rotor compressors is not yet mature and has not yet reached In the stage of mass production, since the vibration of the single-rotor compressor is worse than that of the double-rotor compressor, the stress of the pipeline, especially the stress at the two adjacent bends of the suction and discharge ports of the compressor, increases significantly, and the reliability is significantly lower than that of the double-rotor compressor. The pipeline of the rotary compressor lays hidden dangers for mass production. Contents of the invention [0003] The present invention aims to s...

AI Technical Summary

Problems solved by technology

[0002] At present, 2-horsepower inverter air conditioners on the market have begun to use single-rotor compressors with lower cost and higher production efficiency to replace dual-rotor compressors, but the technology for 3-horsepower inverter air conditioners with single-rotor compressors is not yet mature and has not yet reached In the stage of mass production, since the vibration of the single-rotor compressor is worse than that of the double-rotor compressor, the stress of the pipeline, especially the stress at the two adjacent bends of the suction and discharge ports of the compressor, increases significantly, and the reliability is significantly lower than that of the double-rotor compressor. The pipeline of the rotary compressor lays hidden dangers for mass production

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