Power Supply Integrated Vacuum Pump Connector Spacer Design
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Solution Overview
Problem
In power supply integrated turbo-molecular pumps, the power-supply-side line often protrudes and gets tucked between the pump main body and the power supply portion housing during assembly, making it difficult to achieve a hermetic seal and potentially leading to increased connector temperatures and reduced durability.
Innovation Solution
A connector spacer is fixed to the pump housing, allowing the connector to be positioned such that the power-supply-side line is prevented from tucking, with a design that includes a vacuum seal and a heat insulating member to reduce heat transfer and improve assembly visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the connector is directly fixed to the pump housing without a spacer, then the assembly is simpler, but the power-supply-side line protrudes and gets tucked between the pump housing and power supply housing during assembly
Solution Approach 1:
A spacer is introduced as an intermediary component between the pump housing and the connector. The spacer has a connector fixing surface that allows the connector to be fixed at an appropriate position, preventing the power-supply-side line from protruding and getting tucked during assembly. This mediator component resolves the conflict between assembly simplicity and assembly ease by providing a structured approach to positioning.
Solution Approach 2:
The spacer is pre-fixed to the pump housing before the connector is installed. This preliminary action establishes the correct positioning and spacing in advance, ensuring that when the connector and power supply housing are assembled, the line will not protrude or get tucked. The preliminary positioning prevents assembly issues before they occur.
2Volume of moving object
If the connector is positioned closer to the pump housing, then the assembly is more compact, but the line gets tucked and hermetic seal cannot be achieved
Solution Approach 1:
The spacer acts as a mediator that maintains the optimal distance between the pump housing and the connector. It prevents the connector from being too close (which would cause line tucking) while also preventing it from being too far (which would reduce compactness). The spacer enables both hermetic sealing and reasonable compactness by providing the correct spacing.
Solution Approach 2:
The spacer changes the spatial parameter (distance) between the pump housing and the connector to an optimal value. By adjusting this distance parameter, the design achieves both hermetic seal capability (by preventing line tucking) and compactness (by not excessive spacing). The spacer thickness is a critical parameter that balances these two requirements.
3Device complexity
If the connector is positioned without proper spacing, then the structure is simpler, but the connector temperature increases and durability decreases
Solution Approach 1:
The spacer serves as a thermal isolator and structural mediator. It provides proper spacing that prevents the connector from being in direct contact with the pump housing, thereby reducing heat transfer to the connector. This intermediary component protects the connector from excessive temperature while maintaining structural integrity without significant added complexity.
Solution Approach 2:
The spacer extracts the connector from direct thermal contact with the pump housing. By separating the connector from the heat source (pump housing) through the spacer, the design reduces heat transfer to the connector, protecting it from temperature-related degradation while maintaining a relatively simple overall structure.
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 use of a connector spacer effectively prevents line tucking, enhances assembly visibility, reduces heat transfer, and maintains the durability and current capacity of the connector, thereby improving the reliability and efficiency of the power supply integrated vacuum pump.
Implementation Method 1
a design that includes a vacuum seal and a heat insulating member to reduce heat transfer
Implementation Method 2
a design that includes a vacuum seal and a heat insulating member to reduce heat transfer
Data Source
AI summary
A power supply integrated vacuum pump comprises: a pump housing in which a pump rotor is arranged; a power supply housing fixed to an outer surface of the pump housing; a connector configured to connect a pump-housing-side line and a power-supply-housing-side line; and a spacer fixed to the outer surface of the pump housing and having a connector fixing surface to which the connector is fixed.