Moving Scroll Collection Groove for Compressor Thrust Balance
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Solution Overview
Problem
The moving scroll of a compressor experiences inefficiencies due to thrust imbalances between the compression and backpressure chambers, leading to fluid leakage or excessive friction, which affects its working efficiency.
Innovation Solution
The moving scroll design incorporates a collection groove extending between 60 to 400 degrees around the axis, with a fluid inlet at the collection end, allowing for balanced pressure compensation between the compression and backpressure chambers, minimizing leakage and friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the compression thrust is greater than the backpressure thrust, then the compression force is sufficient, but the moving scroll breaks contact with the static scroll causing fluid leakage
Solution Approach 1:
The patent applies preliminary anti-action by introducing a backpressure chamber that generates backpressure thrust in advance to counterbalance the compression thrust. The backpressure chamber is positioned to receive high-pressure refrigerant, creating a counteracting force that prevents the moving scroll from breaking contact with the static scroll, thus maintaining reliable contact stability while preserving sufficient compression force.
2Reliability
If the compression thrust is less than the backpressure thrust, then contact is maintained, but excessive friction occurs reducing efficiency
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the backpressure through the backpressure chamber. The backpressure chamber receives high-pressure refrigerant whose pressure can vary, allowing the backpressure thrust to be adjusted to match the compression thrust. This dynamic parameter adjustment maintains optimal contact stability while minimizing friction loss and improving overall efficiency.
3Stress or pressure
If thrust imbalance occurs between compression and backpressure chambers, then pressure equilibrium is disrupted, but working efficiency decreases
Solution Approach 1:
The patent applies feedback by using the backpressure chamber to sense and respond to compression thrust variations. The backpressure chamber receives high-pressure refrigerant from the compression chamber, and the resulting backpressure thrust automatically adjusts to counterbalance the compression thrust. This feedback mechanism maintains pressure equilibrium and optimizes working efficiency by dynamically balancing the thrust forces.
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 solution achieves improved compression efficiency by maintaining equilibrium between the pressures in the compression and backpressure chambers, reducing leakage and friction, thereby enhancing the overall performance of the compressor.
Implementation Method 1
the collection groove extending not less than 60 degrees and not more than 400 degrees around the axis from the first port to the collection end... allowing for balanced pressure compensation between the compression and backpressure chambers
Data Source
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AI summary
The present application provides a compressor and a moving scroll thereof. A moving scroll wall of a moving base plate is integrally formed at a first side of the moving base plate, the moving scroll wall extending around an axis from a position near the axis in a direction away from the axis. A collection groove is disposed on an end face of the moving scroll wall, the end face being located at the end of the moving scroll wall that is opposite the moving base plate in the direction of the axis. A channel running in the direction of the axis is disposed between the collection groove and a second side, the channel and the collection groove being connected at a first port, and the channel running through the second side at a second port. The collection groove extends from the first port to a collection end in a direction towards the centre, and the collection groove extends not less than 60 degrees and not more than 400 degrees around the axis from the first port to the collection end. A compressor using the moving scroll has a suitable cost and high compression efficiency.