Scroll Compressor Heat Shield for Suction Overheating Isolation
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Solution Overview
Problem
High-temperature compressed medium discharged from the compression chamber in a scroll compressor affects the to-be-compressed medium entering the chamber, leading to overheating issues.
Innovation Solution
A heat shield is introduced between the partition wall and the first end plate of the first scroll, guiding the medium into a suction passage that separates the high-temperature discharge from the incoming medium, using a disc-shaped portion and a cylindrical extension to form gaps for medium entry, with a sealing ring to ensure separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the compression chamber discharges high-temperature medium directly into the housing space, then the compression function is achieved, but the high-temperature medium overheats the to-be-compressed medium entering the compression chamber
Solution Approach 1:
A heat shield is introduced as an intermediary component between the discharge member and the to-be-compressed medium. The heat shield includes a discharge passage that guides the high-temperature compressed medium away from the suction area, and a shield portion that physically blocks thermal interaction between the discharged medium and the incoming medium, thus protecting the to-be-compressed medium from overheating
Solution Approach 2:
The heat shield structure is segmented into distinct functional portions: a discharge passage for directing the compressed medium flow, and a shield portion for thermal isolation. This segmentation allows the high-temperature medium to be channeled through a dedicated path while the shield portion creates a thermal barrier, preventing heat transfer to the suction area
2Object-affected harmful factors
If a heat shield is added to block heat transfer, then the overheating problem is reduced, but the device complexity increases
Solution Approach 1:
The heat shield is merged with the discharge member to form an integrated assembly. The discharge member and heat shield work together as a unified component system, where the heat shield's discharge passage and shield portion are structurally combined with the discharge member, reducing the number of separate parts and simplifying assembly while maintaining effective heat blocking functionality
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 heat shield mitigates the impact of high-temperature medium on the incoming medium, reducing overheating and enhancing the efficiency of the compression process by isolating heat transfer.
Implementation Method 1
a heat shield disposed between the partition wall and the first end plate of the first scroll... The heat shield mitigates the impact of high-temperature medium on the incoming medium, reducing overheating and enhancing the efficiency of the compression process by isolating heat transfer
Data Source
AI summary
A scroll compressor includes a housing; a partition wall disposed in the housing, the partition wall dividing a space inside the housing into a first space below the partition wall and a second space above the partition wall, the partition wall having an opening in a central portion; a first scroll and a second scroll disposed in the first space inside the housing; a discharge member having a lower end of the discharge member located the port of the first end plate of the first scroll and an upper end of the discharge member connected to an edge of the opening of the partition wall, the discharge member having an internal passage for discharging compressed medium from the port of the first end plate of the first scroll to the second space above the partition wall; and a heat shield disposed between the partition wall and the first end plate of the first scroll. By providing a heat shield, the impact of high-temperature medium discharged from the compression chamber on the to-be-compressed medium sucked into the compression chamber formed by the first and second scrolls is mitigated.