Stationary Scroll Plate Cooling Chamber for Thermal Deformation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The temperature difference between the frontside and backside of scroll plates in a scroll compressor leads to thermal deformation and reduced efficiency due to stress and leakage.
Innovation Solution
A stationary scroll plate with an injection channel for cooling fluid at intermediate pressure, forming a cooling chamber and an intermediate pressure cavity, and an orbiting scroll plate with insulating material in recesses to manage temperature differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling fluid is injected into the compression chamber, then the temperature of the frontside is reduced, but the temperature difference between frontside and backside increases causing thermal deformation
Solution Approach 1:
The stationary scroll plate is segmented into functional zones: a cooling chamber formed by recesses receiving cooling fluid, an intermediate pressure cavity for pressure equalization, and insulation layers separating thermal zones. This segmentation allows independent control of cooling, pressure management, and thermal isolation functions.
Solution Approach 2:
An insulation layer is introduced as an intermediary between the cooling chamber and the intermediate pressure cavity, and between the intermediate pressure cavity and the compression chamber. This intermediary prevents direct thermal coupling, allowing the frontside to be cooled while maintaining thermal stability of the overall structure.
2Stability of the object's composition
If the stationary scroll plate is cooled, then thermal deformation is reduced, but the fit and sealing between scroll plates deteriorates due to non-uniform temperature distribution
Solution Approach 1:
The intermediate pressure cavity serves as a thermal and pressure buffer zone that equalizes conditions between the cooled frontside and the warmer backside. By maintaining relatively uniform pressure and temperature in this intermediate zone, the scroll plates achieve better fit and sealing without excessive thermal deformation.
3Stability of the object's composition
If insulating material is added to the orbiting scroll plate, then temperature difference is reduced, but the device complexity increases
Solution Approach 1:
Insulation layers are applied locally at critical interfaces: between the cooling chamber and intermediate pressure cavity, and between the intermediate pressure cavity and compression chamber. This localized insulation approach reduces temperature differences where they matter most without adding unnecessary complexity throughout the entire structure.
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
Reduces thermal deformation and improves fit between scroll plates, enhancing the efficiency and sealing of the compressor by uniformly distributing temperature and pressure.
Implementation Method 1
a cooling chamber (240), which is configured to receive a portion of the fluid from the injection channel via the inlet channel and to provide the received fluid to one or more compression chambers, which are formed between the interleaved spiral wraps, via the outlet channel
Implementation Method 2
an orbiting scroll plate with insulating material in recesses to manage temperature differences
Implementation Method 3
an injection channel for cooling fluid at intermediate pressure, forming a cooling chamber
Implementation Method 4
During the compression of the fluid within the compression chambers, the fluid's pressure and temperature increase
Data Source
AI summary
A stationary scroll plate for use in a scroll compressor is described. The stationary scroll plate comprises a base plate having a first side and a second side, wherein the second side opposes the first side; a spiral wrap formed at the first side of the base plate, wherein the spiral wrap is adapted to interact with a corresponding spiral wrap of an orbiting scroll plate to form a compression chamber; an injection channel formed within the base plate, the injection channel providing an injection path for injection of fluid into the compression chamber; a recess located at the second side; an insert placed within the recess, wherein the insert forms a cooling chamber within the recess; an inlet channel via which the cooling chamber is connected to the injection channel; and an outlet channel via which the cooling chamber is connected to the inside of the spiral wrap.