Scroll Compressor Coupling Structure for High-Speed Stress Reduction
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Solution Overview
Problem
Existing compressor coupling components with integrally formed counterweights are limited by local stresses and material properties, restricting their use to lower rotation speeds and increasing production costs, making them unsuitable for higher operating ranges and efficient manufacturing processes.
Innovation Solution
A compressor coupling component design featuring a V-shaped widening of the planar main body with integrated reinforcing ribs, allowing for the use of powder metal alloys and enhancing rigidity and robustness, suitable for rotor rotation speeds up to 11,000 revolutions per minute.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional forging processes and carbon steel materials are used for compressor coupling component, then strength and reliability are sufficient for limited rotation speeds, but production costs increase and rotation speed range is restricted
Solution Approach 1:
The patent changes the material parameters by using powder metal alloys instead of traditional carbon steel, and modifies the geometric parameters by implementing V-shaped widenings and reinforcing ribs. These parameter changes enable the component to withstand higher rotation speeds while using more cost-effective manufacturing processes.
Solution Approach 2:
The patent employs composite material structures by combining powder metal alloys with specific geometric configurations (V-shaped widenings and reinforcing ribs). This composite approach allows the use of less expensive materials while achieving the required mechanical properties for high-speed operation through structural reinforcement.
2Productivity
If compressor coupling component design is optimized for higher rotation speeds, then rotation speed range increases, but local stresses increase and may exceed material limits
Solution Approach 1:
The patent applies local quality by implementing V-shaped widenings and reinforcing ribs at specific locations where stresses are highest. This localized reinforcement strategy reduces local stresses at critical areas without requiring a complete redesign of the entire component, enabling higher rotation speeds while maintaining stress within material limits.
Solution Approach 2:
The patent introduces additional geometric dimensions by adding V-shaped widenings and reinforcing ribs that extend in multiple directions. This dimensional enhancement creates a more robust three-dimensional structure that distributes and reduces local stresses, allowing the component to operate at higher rotation speeds.
3Strength
If V-shaped widening and reinforcing ribs are added to planar main body, then rigidity and robustness increase for high-speed operation, but device complexity increases
Solution Approach 1:
The patent merges the reinforcing elements (V-shaped widenings and reinforcing ribs) directly into the planar main body as integral features rather than separate components. This integration approach increases rigidity and robustness while minimizing the increase in device complexity, as the reinforcements are formed as part of the single component structure.
4Ease of manufacture
If powder metal alloys are used instead of carbon steel, then production costs decrease by 40-60%, but material strength and load capacity are reduced
Solution Approach 1:
The patent compensates for the lower inherent strength of powder metal alloys by implementing local quality enhancements through V-shaped widenings and reinforcing ribs at critical stress areas. This localized structural reinforcement allows the use of cost-effective powder metal materials while maintaining the required strength and load capacity for high-speed operation.
Solution Approach 2:
The patent creates a composite solution by combining powder metal alloy materials with enhanced geometric structures. The combination of these materials and structures achieves the required mechanical properties at lower cost, as the structural reinforcements compensate for the lower base material strength.
Data Source
AI summary
A compressor coupling component includes a planar main body with a first, front side and a second, rear side opposite the first side, a cylindrical coupling neck, wherein the cylinder axis of the cylindrical coupling neck runs perpendicularly to the plane of the planar main body, and the cylindrical coupling neck protrudes from the planar main body in the axial direction, a counterweight, is integrally formed on an outer region of the planar main body, and protrudes beyond the planar main body in the axial direction on the rear side of the planar main body, wherein the planar main body has opposing outer edge regions which extend as far as ends of the counterweight which oppose each other in the arc direction of the counterweight, and run linearly in the manner of increasingly spaced-apart V-legs.