Compressor and its control method and air conditioner

Abstract

The invention provides a compressor. The compressor comprises a shell, a compressing assembly, a motor and a crankshaft, wherein the compressing assembly, the motor and the crankshaft are arranged in the shell; the motor drives the compressing assembly to rotate through the crankshaft, the compressing assembly comprises a rotor type pump body assembly and a vortex type pump body assembly which are arranged on the two sides of the motor respectively, and an air outlet pipe is arranged on the shell; an air inlet of the vortex type pump body assembly is communicated with an air outlet of the rotor type pump body assembly, air compressed by the vortex type pump body assembly is output through the air outlet pipe; to-be-compressed air is sucked into the rotor type pump body assembly through the air inlet of the rotor type pump assembly, and the air inlet of the rotor type pump assembly can be optionally communicated with the air inlet of the vortex type pump body. The invention further relates to a control method of the compressor and an air conditioner. According to the compressor, the control method thereof and the air conditioner, the effect of multilevel switching or capacity adjusting of the compressor is achieved; in addition, the compressor is compatible with the advantages of a vortex type compressor and a rotating type compressor and suitable for a wide working condition range.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a compressor, a control method thereof, and an air conditioner. Background technique [0002] Ordinary scroll compressors are only suitable for some specific working conditions. When the condensing temperature is constant, the following problems will occur when the ordinary scroll compressor operates at a low evaporation temperature: 1) The suction specific volume increases, and the refrigerant cycle 2) The pressure ratio increases, the volumetric efficiency decreases, and the air delivery volume and energy efficiency of the compressor drop significantly; 3) The exhaust gas temperature rises rapidly, causing the viscosity of the lubricating oil to drop sharply, affecting the lubrication of the compressor. When the exhaust temperature is close to the flash point of the lubricating oil, it will carbonize the lubricating oil. Contents of the invention [0003] Based on this...

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Problems solved by technology

[0003] Based on this, it is necessary to solve the problem that the compressor can adapt to the poor range of working conditions. The purpose of the present invention is to provide a compressor and its control method and an air conditioner, which can realize multi-stage switching or capacity adjustment of the compressor, and is compatible with scroll Advantages of type compressor and rotary compressor, suitable for a wide range of working conditions

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