Scroll Compressor Valve Plate Surface Pressure Enhancement
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Solution Overview
Problem
Existing scroll compressors face challenges in achieving sufficient surface pressure at the position where the injection valve needs to be supported, leading to potential deformation of the gasket retainer due to high bead heights.
Innovation Solution
The implementation of a surface pressure enhancement portion on the valve plate, which protrudes toward the injection valve, and a stepped portion around the valve plate to reduce the bead height of the gasket retainer, thereby enhancing surface pressure and preventing deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the bead height of the gasket retainer is increased to support the injection valve, then the injection valve can be adequately supported, but the gasket retainer deforms due to excessive height
Solution Approach 1:
The valve plate is designed with a protruding surface pressure enhancement portion that creates localized high surface pressure only at the injection valve support position, rather than uniformly increasing pressure across the entire gasket retainer. This allows adequate support for the injection valve while preventing excessive deformation of the gasket retainer by concentrating the supporting function only where needed.
2Ease of manufacture
If the surface of the valve plate is kept flat for simplicity, then manufacturing is easier, but sufficient surface pressure cannot be formed at the injection valve support position
Solution Approach 1:
Instead of making the entire valve plate surface complex, only a specific portion (the surface pressure enhancement portion) is designed to protrude toward the injection valve. This localized modification is simple to manufacture while effectively creating the necessary high surface pressure zone at the injection valve support position.
3Stability of the object's composition
If the bead portion height is reduced to prevent gasket retainer deformation, then deformation is prevented, but the injection valve cannot be assuredly supported
Solution Approach 1:
The surface pressure enhancement portion on the valve plate acts as an intermediary element between the gasket retainer and the injection valve. It transfers and concentrates the supporting force from the gasket retainer to the injection valve, enabling adequate support even when the bead portion height is reduced to prevent gasket retainer deformation.
Data Source
AI summary
A scroll compressor including a housing, a motor in the housing, an orbiting scroll, and a fixed scroll. An injection valve assembly is provided between the fixed scroll and the housing and further includes a cover plate, a valve plate, a gasket retainer, and an injection valve. The compressor capable of increasing a surface pressure at a position at which the injection valve of the injection valve assembly needs to be supported, and preventing deformation of the gasket retainer by reducing a bead height of the gasket retainer.