Crankshaft Counterweight Balancing Scroll Compressor
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Solution Overview
Problem
Existing scroll compressor technologies fail to effectively balance crankshaft deformation due to only considering the influence of the orbiting scroll centrifugal force, resulting in poor balance effects.
Innovation Solution
A method and device that determine the component centrifugal force required for counterweights to overcome both orbiting scroll centrifugal force and gas force, allowing for accurate placement and distribution of counterweights on the crankshaft to balance deformation, considering the superimposed effects of these forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only orbiting scroll centrifugal force is considered for counterweight design, then the design complexity is reduced, but the balance effect deteriorates
Solution Approach 1:
The patent changes the parameters considered in the counterweight design from only centrifugal force to include both centrifugal force and gas force. This is achieved by determining component centrifugal forces that account for the superimposed effects of orbiting scroll centrifugal force and gas force, thereby improving the balance effect while maintaining a manageable design process through systematic parameter consideration
Solution Approach 2:
The patent applies the counterweight principle by designing counterweights on the crankshaft that generate centrifugal forces to balance the superimposed effects of orbiting scroll centrifugal force and gas force. The counterweight is positioned and sized to create a balancing effect that addresses both force components simultaneously
2Reliability
If superimposed effects of centrifugal force and gas force are considered, then the balance effect is improved, but the calculation complexity increases
Solution Approach 1:
The patent segments the complex balancing problem into distinct force components: orbiting scroll centrifugal force and gas force. By determining component centrifugal forces for each force separately and then combining their effects, the calculation becomes more systematic and manageable while still achieving comprehensive balance
Solution Approach 2:
The patent introduces component centrifugal force as a new parameter that synthesizes the effects of multiple forces. This parameter change allows the complex superimposed effects to be handled through a structured approach of determining individual force components and their combined effect on crankshaft deformation
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
This approach improves the balance effect on crankshaft deformation by accurately accounting for both centrifugal and gas forces, enhancing the stability and reducing vibration noise in high-speed scroll compressor operations.
Implementation Method 1
determining a component centrifugal force required for a counterweight to overcome the crankshaft deformation caused by both an orbiting scroll centrifugal force and a gas force
Data Source
AI summary
Disclosed are a method and a device for balancing crankshaft deformation e, a crankshaft with counterweights determined according to the method, and a scroll compressor using the crankshaft. The method includes: determining a component centrifugal force required by a counterweight to overcome the crankshaft deformation caused by both an orbiting scroll centrifugal force and a gas force; and determining the counterweight according to the component centrifugal force. The counterweight is arranged on the crankshaft.