Double-cylinder variable-capacity compressor and air conditioner

Abstract

The invention relates to a double-cylinder variable-capacity compressor and an air conditioner. The double-cylinder variable-capacity compressor comprises a motor and a pump body assembly, the motor comprises a stator and a rotor, the rotor is arranged in the stator, the rotor can drive the pump body assembly to work when rotating relative to the stator, the displacement of the pump body assemblyis V, the induction voltage constant between stator wires is E, and when the rotating speed of the motor is 1000 RPM, and E and V meet the following formula: E=kV, wherein the value range of k is 0.9-1. According to the double-cylinder variable-capacity compressor and the air conditioner, when the rotating speed of the motor is 1000 RPM, E and V meet the formula that E=(0.9-1) V, when the double-cylinder variable-capacity compressor is low in load, the operating frequency of the motor is lower, the current harmonic content of a motor winding is greatly reduced, meanwhile, the voltage harmoniccontent of the motor end is greatly reduced, the motor iron core loss is obviously reduced, and the motor winding loss is basically unchanged; and the motor efficiency is improved, and the energy efficiency of the double-cylinder variable-capacity compressor is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a double-cylinder variable capacity compressor and an air conditioner. Background technique [0002] With the development of the economy and the progress of the society, people's living standards are gradually improving, and more and more people are buying large-scale houses and villas, so central air-conditioning has emerged as the times require. In general households, the central air conditioner is mostly multi-connected, that is, one outdoor unit drives several indoor units. [0003] Since the system load changes with the number of indoor units opened and closed, the flow of refrigerant needs to be reduced when the demand for cooling and heat is small, and the flow of refrigerant needs to be increased when the demand for cooling and heat is large. Using ordinary compressors, if the demand for large cooling and heat is met, there will be too much refrigerant when ther...

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a dual-cylinder variable capacity compressor and an air conditioner that can improve energy efficiency for the problem of low energy efficiency of traditional variable capacity compressors.

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