Scroll Compressor Counterweight Layout for High-Speed Stability
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Solution Overview
Problem
Conventional scroll compressors face challenges in miniaturization and high-speed operation, leading to increased noise and vibration due to centrifugal forces.
Innovation Solution
The scroll compressor design includes a first and second scroll with end plates and wraps, a motor-driven member, a bracket, and a sealing ring with a C-shaped cross section, along with a heat shield and oil grooves to enhance performance and reduce noise and vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the compressor speed is increased to achieve high-speed operation, then productivity is improved, but noise and vibration increase due to greater centrifugal force
Solution Approach 1:
A counterweight is provided on the driving member that rotates in the opposite direction to the scroll wraps. The counterweight generates centrifugal force in the opposite direction to balance the centrifugal force produced by the orbiting scroll, thereby reducing overall vibration and noise while enabling higher operating speeds
2Volume of moving object
If the compressor is miniaturized to reduce size, then device complexity is reduced, but maintaining high-speed stability becomes more difficult
Solution Approach 1:
The counterweight on the driving member balances centrifugal forces, providing vibration reduction and operational stability even in a compact, miniaturized design, allowing the compressor to maintain stability at high speeds despite reduced size
3Reliability
If a sealing ring is added to seal between the exhaust member and first end plate, then reliability is improved, but device complexity increases
Solution Approach 1:
The sealing ring is integrated with the exhaust member, combining the sealing function with the existing exhaust component structure. This reduces the need for separate sealing components and simplifies assembly while ensuring reliable sealing between the exhaust member and first end plate
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 improved design enhances the performance of the scroll compressor by reducing noise and vibration, allowing for higher speed operation while maintaining stability and efficiency.
Implementation Method 1
the sealing ring is located between the lower end of the exhaust member and the first end plate to form a seal between the lower end of the exhaust member and the first end plate
Implementation Method 2
as the speed of the compressor increases, it has a greater centrifugal force, which will cause the problems such as increased noise and vibration of the compressor
Data Source
AI summary
A scroll compressor includes a first scroll including a first end plate and a first scroll wrap extending downward from the first end plate; a second scroll including a second end plate and a second scroll wrap extending upward from the second end plate, the second scroll and the first scroll cooperating to form a compression chamber for compressing a refrigerant; a motor; a driving member located below the second scroll, the motor driving the first scroll to rotate through the driving member, and the first scroll driving the second scroll to rotate; and a bracket, the driving member being rotatably supported on the bracket. This structure can improve the performance of the scroll compressor.