Orbiting scroll air return hole position setting method, orbiting scroll and scroll compressor

Abstract

The invention provides an orbiting scroll air return hole position setting method, an orbiting scroll and a scroll compressor. The method comprises the following steps: setting the backpressure according to the actual operation condition, so as to obtain a relatively constant orbiting scroll adhesion force; the volume of the working cavity of the scroll compressor is obtained according to the ideal gas equation PV = RT, P is the pressure, V is the volume, R is the gas constant, and T is the thermodynamic temperature; according to a volume calculation formula V (theta) = [2 (phiE-theta)-3pi] Pt (Pt / 2-t) H of a working cavity of the scroll compressor, determining the spread angle of the air return hole, so as to determine the position of the air return hole in the dynamic scroll plate; wherein V (theta) is the volume of the working cavity of the scroll compressor, theta is the rotation angle of the main shaft, phi E is the final spread angle of the involute of the central surface of the scroll ring, Pt is the pitch of the scroll ring, t is the wall thickness of the scroll ring, and H is the height of the scroll ring. The positions of the air return holes are convenient and reliable to determine, the orbiting scroll is small in structure difference, and the compressor operates stably and reliably and is long in service life.

Description

Technical field [0001] The present invention relates to the field of compressors. Background technique [0002] The compressor is a substantive fluid machine that increases the low pressure gas into high pressure gas. It is a key component of the refrigeration system. The compressor is divided into a variety of types according to the structure, such as in the existing market as a mainstream. Compressor use. The scroll compressor is typically engaged with the fixed scroll component and the rotating scroll portion, and the compression chamber is formed between the two parties, the fixed scroll member, and the rotating scroll member from the mirror plate, by turning the rotating vortex Based on the rotation of the rotary constraint, the component is rotated along the circular orbit, the compression chamber continuously changes the volume, performing gas inhalation, compression, and discharge process, by the outer peripheral portion of the rotating scroll member and the back surface ...

AI Technical Summary

Problems solved by technology

[0004] Poor positioning accuracy of the airway, which is not conducive to balancing the pressure of the back pressure chamber

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