Rotary parallel piston compressor

Abstract

The invention provides a rotary translation piston compressor, belonging to the technical field of mechanical engineering. The rotary translation piston compressor solves the problem that the elasticity strength of a spring needed by an existing rotary translation piston compressor is high. The rotary translation piston compressor comprises an air cylinder, a crankshaft and blades, wherein a piston is sleeved on an eccentric part, and a plane part is arranged on the peripheral surface of the piston; springs are arranged between the blades and the air cylinder; the blades prop against the plane part on the peripheral surface of the piston, and the end surfaces of the blades, propping against the piston, are planes; the eccentric part and the piston are connected with each other through a friction reducing mechanism which can enable the end surfaces of the blades to always prop against the plane on the peripheral surface of the piston. Plane friction and plane sealing are adopted between the blades and the piston of the rotary translation piston compressor so as to enlarge the sealing surface, and improve the sealing property. Meanwhile, due to the plane sealing, a high-pressure refrigerant can not enter the parts between the blades and the piston easily, so that the additional force of the high-pressure refrigerant to the moving direction of the blades in the operation of the compressor is reduced.

Description

technical field [0001] The invention belongs to the technical field of mechanical engineering, and relates to a fluid variable displacement machine of a rotary piston, in particular to a rotary translational piston compressor. Background technique [0002] The air conditioner compressor is a driven fluid machine that raises low-pressure refrigerant gas to high pressure. The air conditioner compressor is the heart of the refrigeration system. Rotary piston air conditioner compressors are widely used in household air conditioners. [0003] There are many relevant documents about rotary piston compressors, such as the rotary piston compressor [application number: 97114554.7; publication number: CN1174297A] recorded in Chinese patent literature. In the background art of this document, conventional rotary piston compressors are described, such as Figure 12 with Figure 13 As shown, it includes a crankshaft 101 having an eccentric portion 102 , a motor 103 driving the cranksha...

AI Technical Summary

Problems solved by technology

According to the structure, the rotary compressor also has the following defects: 1. In order to prevent the vanes from breaking away from the grooves on the outer peripheral surface of the piston, the required spring force of the spring is relatively large, and the spring stiffness of the rotary compressor spring is estimated to be Should be controlled above 20Kg / ㎜

As a result, a series of problems arise: such as the increased pressure of the blades on the piston, the contact between the piston and the blades needs to be lubricated, the friction between the piston and the eccentric part increases, and the efficiency of the compressor is greatly reduced, etc.

2. The contact between the piston and the vane needs oil supply, that is, there is an oil supply system, which leads to complex structure of the compressor and more difficult and costly parts processing

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