CN-122014605-A - Scroll compressor with centering-free structure and assembling method

CN122014605ACN 122014605 ACN122014605 ACN 122014605ACN-122014605-A

Abstract

The invention provides a scroll compressor with a centering-free structure and an assembling method, and relates to the technical field of scroll compressors and assembling methods. The vortex compressor comprises a shell, an upper support and a vortex assembly, wherein the upper support and the vortex assembly are arranged in the shell, the vortex assembly comprises a fixed vortex and an movable vortex, an annular boss is arranged on the outer edge of the circumference direction of the fixed vortex, an annular concave table is arranged on the outer edge of the circumference direction of the upper support, and the fixed vortex is installed on the upper support through clearance fit between the inner circular surface of the annular boss and the outer circular surface of the annular concave table of the upper support, so that concentric positioning between the fixed vortex and the upper support is realized. The invention improves the assembly efficiency of the compressor on the basis of realizing the installation of the vortex component of the vortex compressor without aligning, and improves the running stability of the compressor due to the adoption of a positioning and aligning mode.

Inventors

XIN CAO
TAN CHENGKUI
HAN WENCHAO
MA LONGSHENG
LIU XINSUI
TANG XIAODONG

Assignees

冰山松洋压缩机(大连)有限公司

Dates

Publication Date: 20260512
Application Date: 20260310

Claims (7)

1. The scroll compressor with the centering-free structure is characterized by comprising a shell, an upper support and a scroll assembly, wherein the upper support and the scroll assembly are arranged in the shell; The vortex assembly comprises a fixed vortex and an movable vortex, an annular boss is arranged on the outer edge of the circumferential direction of the fixed vortex, an annular concave table is arranged on the outer edge of the circumferential direction of the upper support, and the fixed vortex is installed on the upper support through clearance fit between the inner circular surface of the annular boss and the outer circular surface of the annular concave table of the upper support, so that concentric positioning between the fixed vortex and the upper support is realized.
2. The scroll compressor with a centering-free structure according to claim 1, wherein the annular boss is an annular structure surrounding a center of the fixed scroll and is integrated with the fixed scroll, and the recess is an annular structure surrounding an upper support center and is integrated with the upper support.
3. The scroll compressor with a non-centering structure as claimed in claim 1, wherein a fit clearance between an inner circular surface of the annular boss and an outer circular surface of the annular recess is 0.02mm to 0.04mm.
4. A scroll compressor having a centering-free structure as claimed in claim 3, wherein a height of fit between the inner circle of the fixed scroll boss and the outer circle of the upper support concave is set to 5mm to 8mm.
5. The scroll compressor with a non-centering structure of claim 1, wherein the inner circular surface of the annular boss and the scroll wraps of the non-orbiting scroll are formed in a single clamping operation.
6. The scroll compressor with a non-centering structure of claim 1, wherein the support bore of the upper support and the annular recess are formed in a single clamping operation.
7. A method of assembling a scroll compressor having a non-centering structure, based on the realization of a scroll compressor having a non-centering structure as claimed in any one of claims 1 to 6, characterized by comprising the steps of: Providing a semi-finished compressor in a vertical state, the semi-finished compressor comprising the upper support installed; Clamping the vortex assembly with the movable vortex side facing downward; Vertically placing the vortex assembly into the shell assembly, so that the inner circular surface of the annular boss of the fixed vortex is contacted with the outer circular surface of the annular concave table supported by the upper support; slowly pressing down the vortex component until the lower end face of the fixed vortex is completely attached to the upper end face of the upper support; And installing and locking a connecting bolt, and concentrically positioning through the cooperation of the annular concave table and the annular concave table to fix the vortex component on the upper support.

Description

Scroll compressor with centering-free structure and assembling method Technical Field The invention relates to the technical field of scroll compressors and assembly methods, in particular to a scroll compressor with an alignment-free structure and an assembly method. Background Scroll compressors are an important type of positive displacement compressor, and the core component thereof is composed of an inter-engaging orbiting scroll and a non-orbiting scroll. In the running process of the compressor, the movable vortex plate is driven by the eccentric shaft and forms a closed volume cavity which is continuously changed with the fixed vortex plate, so that the sucking, compressing and discharging processes of gas are realized. The structural characteristics determine that the assembly precision between the vortex plates directly influences the performance index of the compressor, and the performance index comprises key technical parameters such as volumetric efficiency, noise level, mechanical reliability and the like. Three centering techniques, namely a pneumatic centering method, an electric centering method and a double-positioning pin centering method, are mainly adopted in the assembly process of the scroll compressor in the current industry. Although the pneumatic centering technology can achieve higher centering precision, a precise pneumatic measurement system and a complex control system are required to be configured, and the technical level requirements on operators are higher. The electric aligning rule depends on a high-precision servo driving system and a real-time detection feedback system, and the equipment investment cost is high. When the double-locating pin centering scheme is adopted, not only the locating holes with high precision are required to be processed, but also the precise locating pins are required to be manufactured in a matched mode, and the processing cost of parts is obviously increased. More importantly, due to the fact that tolerance accumulation exists in mechanical fit necessarily, positioning interference phenomenon often occurs in the actual assembly process, assembly efficiency is low, and the average single assembly time is increased by more than 30%. These prior art generally have the problems of complex process, high cost or low assembly efficiency, and restrict the large-scale and efficient production of the scroll compressor, so it is very important to propose a scroll compressor with a centering-free structure. Disclosure of Invention According to the technical problems of complex process, high cost or low assembly efficiency in the prior art, the scroll compressor with the centering-free structure and the assembly method are provided. The invention mainly adopts a positioning and aligning mode, so that the structure of the compressor is more stable, and the running stability of the compressor is improved. The invention adopts the following technical means: A scroll compressor with a centering-free structure comprises a shell, an upper support arranged in the shell and a scroll component; The vortex assembly comprises a fixed vortex and an movable vortex, an annular boss is arranged on the outer edge of the circumferential direction of the fixed vortex, an annular concave table is arranged on the outer edge of the circumferential direction of the upper support, and the fixed vortex is installed on the upper support through clearance fit between the inner circular surface of the annular boss and the outer circular surface of the annular concave table of the upper support, so that concentric positioning between the fixed vortex and the upper support is realized. Further, the annular boss is an annular structure around the center of the fixed vortex and integrated with the fixed vortex, and the concave table is an annular structure around the center of the upper support and integrated with the upper support. Further, a fit clearance between the inner circular surface of the annular boss and the outer circular surface of the annular concave table is 0.02mm-0.04mm. Further, the matching height between the inner circle of the fixed vortex boss and the outer circle of the upper support concave table is set to be 5mm-8mm. Further, the inner circular surface of the annular boss and the vortex teeth of the fixed vortex are processed and formed in one clamping. Further, the support inner hole of the upper support and the annular concave table are processed and formed in one clamping. The invention also provides an assembling method of the scroll compressor with the centering-free structure, which comprises the following steps: Providing a semi-finished compressor in a vertical state, the semi-finished compressor comprising the upper support installed; Clamping the vortex assembly with the movable vortex side facing downward; Vertically placing the vortex assembly into the shell assembly, so that the inner circular surface of the annular boss of the fixed vortex is contact