Integrated Valve Assembly Simplifies Scroll Compressor
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Solution Overview
Problem
The complexity of scroll compressor assembly, particularly due to multiple valve assemblies, complicates the assembly process and increases the risk of errors and inefficiencies.
Innovation Solution
A compressor design featuring a first and second scroll member, a hub member, and a valve member with a biasing mechanism, where the valve member is displaceable between closed and open positions to control communication between bypass and discharge ports, and is axially retained by a valve retainer and biasing member, simplifying the assembly process and enhancing operational efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple valve assemblies are used to control compressor discharge conditions, then the compressor can achieve better discharge control and operational flexibility, but the assembly process becomes more complex and error-prone
Solution Approach 1:
The patent combines multiple valve functions (discharge valve and bypass valve) into a single integrated valve assembly that operates together as one unit. The valve member is configured with a body portion that defines both the discharge valve aperture and bypass valve aperture, allowing both functions to be achieved through a single assembly operation rather than installing separate valve assemblies independently
Solution Approach 2:
The single valve member performs multiple functions simultaneously - it controls both the discharge valve and bypass valve operations through its different aperture configurations. The biased configuration of the valve member allows it to selectively open or close both apertures based on compressor operating conditions, providing multi-functionality without requiring separate valve assemblies
2Adaptability or versatility
If multiple separate valve assemblies are installed, then comprehensive valve control is achieved, but the number of parts and assembly steps increases
Solution Approach 1:
The valve member integrates both discharge valve and bypass valve functionalities into a single component that is installed in one assembly operation. The valve retainer and hub member are configured to receive and secure this single integrated valve member, eliminating the need for multiple separate installation steps and reducing the total number of parts that need to be managed during assembly
3Device complexity
If a single integrated valve assembly is used, then assembly is simplified, but control precision over separate valve operations may be reduced
Solution Approach 1:
The valve member is designed with different aperture characteristics at different locations - the discharge valve aperture and bypass valve aperture have different sizes, shapes, and positioning relative to the valve member body. This local differentiation allows each valve function to maintain its required precision while being controlled by the same integrated valve member through its biased configuration
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
The design simplifies the assembly process, reduces errors, and improves operational efficiency by ensuring precise control over valve operation, thereby enhancing the overall performance of the compressor.
Implementation Method 1
a biasing member axially retained within the hub member and biasing the valve member to the closed position
Data Source
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AI summary
A compressor hub assembly may include a hub member, a valve retainer and a valve member. The hub member may include first and second portions. The first portion may define an annular hub wall for a compressor and may have a first inner diameter. The second portion may have a second inner diameter greater than the first inner diameter and may define a stepped region between the first and second portions. The valve retainer may be fixed to the hub member at an end of the second portion opposite the stepped region and may define a third inner diameter. The valve member may be located between the valve retainer in the stepped region and may have an outer diameter less than the second inner diameter and greater than the first and third inner diameters.