Vacuum Pump Counter Unit Assembly and Testing
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Solution Overview
Problem
The existing methods for assembling vacuum pumps require the motor to be installed and connected to the control unit before testing, making it difficult to identify and rectify errors early in the manufacturing process, and complicating the assembly and maintenance of the vacuum pump.
Innovation Solution
The opening and counter unit are designed to match in dimensions, allowing for the counter unit to be connected and tested before installation, with the connection being encapsulated or cast, enabling earlier testing and simplifying assembly by eliminating the need for thermal joining and providing permanent protection against external influences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the motor is installed in the housing and connected to the control unit through an opening before testing, then the assembly is complete and functional, but the motor cannot be tested early in the manufacturing process and errors cannot be identified until final assembly
Solution Approach 1:
The counter unit is separated into a distinct component that can be assembled and tested independently from the housing and motor. The opening in the housing wall is designed as a separate interface that accepts the counter unit, allowing the counter unit to be manufactured, tested, and prepared independently before final assembly into the complete vacuum pump system.
Solution Approach 2:
The counter unit is assembled, electrically connected, and tested in advance before being installed in the housing. The opening is prepared in the housing wall beforehand with appropriate sealing arrangements. This preliminary preparation allows early detection of manufacturing errors in the counter unit and enables corrective actions before final assembly, improving reliability without significantly increasing overall assembly complexity.
2Ease of operation
If the line is connected to the counter unit via a plug connector, then the assembly and disassembly is easier, but the connection is not permanently protected against external influences
Solution Approach 1:
The line connection to the counter unit is integrated and permanently fixed within the counter unit structure rather than using detachable plug connectors. The line is connected to connection points on the counter unit in a manner that is encapsulated or cast, merging the electrical connection into the counter unit itself. This provides permanent protection against external influences while maintaining assembly simplicity through the modular counter unit design.
Solution Approach 2:
The connection between the line and counter unit is encapsulated or cast in a suitable manner, creating a protective enclosure that seals the electrical connection against external influences such as moisture, dust, and mechanical damage. This encapsulation provides permanent protection while the overall counter unit remains a manageable modular component for assembly and disassembly.
3Ease of manufacture
If the counter unit is passed through the opening in operational orientation, then the sealing is simpler, but the counter unit cannot be properly installed if its dimensions do not match the opening
Solution Approach 1:
The opening in the housing wall is designed with specific dimensional characteristics that match the counter unit's geometry. The opening is not simply a circular hole but has a shape and size that corresponds to the counter unit's profile, allowing the counter unit to be passed through in a specific orientation that ensures proper sealing and installation. This asymmetric design provides both simplified sealing and guaranteed proper installation.
Data Source
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AI summary
The invention relates to a vacuum pump with a housing, at least one functional unit arranged in the housing, and at least one counter unit arranged outside the housing, which is electrically and/or informationally connected to the functional unit via at least one line, wherein the line runs through an opening formed in a housing wall, wherein the counter unit is mounted on the outside of the housing wall in an operating orientation and covers the opening, and wherein the opening and the counter unit are coordinated with respect to their dimensions in such a way that the counter unit can be passed through the opening in a mounting orientation different from the operating orientation.