Variable capacity compressor and refrigeration equipment

Abstract

The invention provides a variable capacity compressor and refrigeration equipment. The variable capacity compressor includes a crankshaft and upper and lower cylinders disposed in sequence along the crankshaft; an upper eccentric portion is formed on the portion, in the upper cylinder, of the crankshaft, and a lower eccentric portion is formed on the portion, in the lower cylinder, of the crankshaft; the periphery of the upper eccentric portion is sleeved with an upper rolling rotor, and the periphery of the lower eccentric portion is sleeved with a lower rolling rotor; the working volume of the upper cylinder is V1, the outer diameter of the upper eccentric portion is b1, and the eccentricity of the upper eccentric portion is h1; and when V1 is larger than or equal to 9.8 and smaller thanor equal to 25.1, b1 is larger than or equal to 26.9 and smaller than or equal to 33.9, and h1 is larger than or equal to 3 and smaller than or equal to 5.2, wherein the unit of V1 is cm<3>, the unitof b1 is mm, and the unit of h1 is mm. Through test and verification, it is found that on the premise of ensuring the cooling capacity and energy efficiency ratio of the variable capacity compressorwithin the design range of the technical scheme, the probability that a crankshaft cannot smoothly rotate, gets stuck and is abraded is reduced, and the energy efficiency and reliability of the compressor are improved.

Description

technical field [0001] The present application relates to the technical field of compressors, in particular, to a displacement compressor, and to a refrigeration device equipped with the displacement compressor. Background technique [0002] The multi-split units commonly used in the field of household central air conditioners are limited by the place of use. Users generally only use one indoor unit for a long time. For ordinary compressors, they need to operate at low frequency for a long time, because the efficiency of the motor is low at low frequency. The increased friction between the compressors is detrimental to the performance and loss of the compressor. The emergence of variable capacity compressors has solved the above problems well. When low cooling capacity is required, the compressor can be switched between single and double cylinders through the action of pins. At present, variable capacity compressors include crankshaft, upper flange, long screw, upper cylind...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of this application is to provide a method that can reduce the probability of poor rotation, jamming and wear of the crankshaft under the premise of ensuring the cooling capacity and energy efficiency ratio, so as to solve the problem of the variable capacity compressor in the related art when switching between single and double cylinders. , due to the constant change of the crankshaft force, the crankshaft rotation is not smooth, stuck and worn, which affects the technical problems of the reliability and energy efficiency of the variable capacity compressor

Images