Scroll Compressor Main Frame Orbiting Radius
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Solution Overview
Problem
Conventional scroll compressors face challenges in increasing refrigerant discharge while maintaining the orbiting scroll and fixed scroll within a predetermined casing size, as increasing the orbiting radius or axial height of the compression chamber is difficult due to structural constraints and the need to maintain durability and rigidity.
Innovation Solution
The design includes a main frame with a radially protruding flange that is fastened to the casing, allowing for an increased orbiting radius of the orbiting scroll and a fixed scroll flange that is inserted into a groove, enabling the accommodation of a larger compression chamber without compromising durability or rigidity, and a sealing member to prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the orbiting radius of the orbiting scroll is increased to enhance refrigerant discharge capacity, then the refrigerant discharge amount increases, but the structural rigidity and durability of the fixed scroll decrease
Solution Approach 1:
The patent introduces a new spatial dimension by positioning the fixed scroll at a distance from the rear housing side plate, creating an orbiting space between the fixed scroll base plate, main frame base plate, and casing. This dimensional reconfiguration allows the orbiting scroll to achieve a larger orbiting radius without compromising the structural integrity of the fixed scroll assembly.
2Productivity
If the axial height of the compression chamber is increased to enhance refrigerant discharge capacity, then the refrigerant discharge amount increases, but the orbiting scroll and fixed scroll cannot be accommodated within the predetermined casing size
Solution Approach 1:
Instead of increasing the axial height of the compression chamber, the patent utilizes the radial dimension by creating an orbiting space that extends radially outward from the fixed scroll. This allows the compression chamber volume to be effectively increased through orbital motion path expansion rather than axial extension, maintaining compact casing dimensions.
3Strength
If the fixed scroll is directly fastened to the rear housing side plate to maintain structural integrity, then the rigidity is maintained, but the orbiting radius of the orbiting scroll cannot be increased
Solution Approach 1:
The patent segments the structural support system by introducing a main frame as an intermediate component between the fixed scroll and the rear housing. The fixed scroll is fastened to the main frame, which is in turn fastened to the rear housing, creating a modular structure that provides both structural integrity and the necessary space for increased orbiting radius.
Solution Approach 2:
The main frame acts as an intermediary element that mediates between the fixed scroll and the rear housing side plate. This intermediate structure allows the fixed scroll to be positioned at an optimal distance from the housing, enabling larger orbiting radius while maintaining structural support and rigidity through the main frame's connection to the housing.
Data Source
AI summary
A scroll compressor including a casing; an orbiting scroll orbitingly moved inside the casing; a fixed scroll engaged with the orbiting scroll to form a pair of compression chambers; and a main frame supporting the orbiting scroll, wherein the fixed scroll includes a fixed scroll base plate and a fixed scroll wrap protruding from the fixed scroll base plate, wherein the main frame includes a main frame base plate provided on an opposite side of the fixed scroll base plate with respect to the orbiting scroll, and wherein the fixed scroll base plate, the main frame base plate and the casing may form an orbiting space of the orbiting scroll. An orbiting radius of the orbiting scroll is increased inside the casing having a predetermined size, so a refrigerant discharge amount is increased in a state in which the orbiting scroll and the fixed scroll are accommodated inside the casing.