Clearance-fixing device for changing capacity regulation of linear compressor

Abstract

The invention relates to a clearance-fixing device for changing stroke regulation of a linear compressor, comprising a venting plug internally which is provided with a cavity and arranged in front of a piston in a cylinder of the linear compressor, a gap between the venting plug and the cylinder of the compressor, a gap between the piston the cylinder of the cylinder of the compressor, an air release valve arranged at the tailing end of a chamber in the venting plug, a flexible exhaust pipe arranged at the front end of the chamber in the venting plug, a connecting piece fixed at the front end of the venting plug and a venting plug position regulation and execution mechanism connected with the connecting piece and fixed on an inner end face of a cylinder cover; wherein the venting plug position regulation and execution mechanism is an electric execution mechanism, a pneumatic execution mechanism or a hydraumatic execution mechanism; when the compressor needs to carry out load regulation, a control system regulates air displacement by changing stroke of the piston and the venting plug position regulation and execution mechanism is employed to regulate the position of the venting plug, so that certain clearance is kept in the process of piston compression and relatively high compressor volumetric efficiency can still be maintained in the process of stroke regulation.

Description

technical field [0001] The invention relates to a constant clearance device for variable capacity adjustment of a linear compressor. Background technique [0002] Linear compressors have the advantages of high efficiency, simple structure, small size, light weight, no oil or less lubricating oil, and excellent variable capacity characteristics. They have become the development direction of a new generation of high-efficiency compressors for small refrigeration devices such as refrigerators. During the working process of the refrigeration device, due to the influence of application requirements and external factors, the refrigeration load will change dynamically with the operation process. The dynamic adjustment of the refrigeration device through the variable capacity of the compressor can improve the energy saving of its operation on the one hand, and ensure more accurate temperature control on the other hand, so the variable capacity refrigeration system has been applied m...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a constant clearance device for variable stroke adjustment of a linear compressor. The device adjusts the position of the exhaust valve while adjusting the stroke of the compressor piston according to the requirements of load adjustment, so as to ensure that the exhaust clearance of the piston compression does not follow the pressure of the piston. The stroke changes to solve the problem of volumetric efficiency drop when the piston stroke of the linear compressor is reduced

Images