Scroll Compressor Fixed Base Plate for Expanded Chamber Capacity
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Solution Overview
Problem
The existing scroll compressors face limitations in expanding the orbiting scroll due to the presence of a peripheral wall that fixes the main frame and fixed scroll, restricting the capacity of the compression chamber.
Innovation Solution
The fixed base plate of the fixed scroll is fixed directly to the inner wall surface of the shell, eliminating the need for a peripheral wall to secure the main frame and fixed scroll, allowing the orbiting scroll to expand to the inner wall surface, thereby increasing the compression chamber capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a peripheral wall is provided on the fixed base plate to fix the main frame and fixed scroll, then the structural stability is improved, but the orbiting scroll expansion is restricted and the compression chamber capacity is reduced
Solution Approach 1:
The peripheral wall that was previously an integral part of the fixed base plate is extracted and separated. The fixed base plate is designed without the peripheral wall protrusion, allowing the orbiting scroll to expand freely to the inner wall surface of the main shell, thereby increasing the compression chamber capacity while maintaining structural stability through alternative fixation methods.
2Reliability
If a peripheral wall is provided to secure the main frame and fixed scroll, then the fixing reliability is improved, but the device complexity increases
Solution Approach 1:
The peripheral wall structure is extracted from the fixed base plate design. This simplification removes the complex protruding structure and its associated fixing components, reducing device complexity while maintaining fixing reliability through the simplified direct mounting configuration of the fixed base plate to the main shell.
Solution Approach 2:
The fixing function is merged into the simplified fixed base plate structure itself, eliminating the need for separate peripheral wall components and their associated fastening mechanisms. This integration reduces the number of parts and assembly steps while maintaining the reliability of the connection between the fixed scroll and the main shell.
3Strength
If a peripheral wall is provided for fixing, then the structural integrity is improved, but the weight increases
Solution Approach 1:
The peripheral wall structure is extracted and removed from the fixed base plate design. This eliminates the additional material required for the protruding wall and its associated fixing components, thereby reducing the overall weight of the scroll compressor while maintaining structural integrity through the simplified direct fixation design.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enhances the capacity of the compression chamber by reducing interference and enabling a larger passage area for refrigerant flow, improving cooling and heating performance while simplifying the structure and reducing weight.
Implementation Method 1
The motor is cooled by the refrigerant that has flowed into the high-pressure chamber
Data Source
Figure 1
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Figure 4~5
AI summary
A scroll compressor includes a shell, a main frame, a fixed scroll, an orbiting scroll, a motor, and a discharge pipe. The shell has therein a refrigerant suction space in which refrigerant suctioned from the outside of the shell is positioned before being suctioned into a compression chamber, a discharge space through which refrigerant compressed in the compression chamber flows out, the discharge space being positioned above the fixed scroll, and a communication passage through which the discharge space and a motor space are in communication with each other. An isolation wall isolating the communication passage from the refrigerant suction space is provided between the main frame and the fixed scroll. A fixed base plate is fixed to an inner wall surface of the shell.