Stator Slot Varnish Injection for Precise Gap Coating
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Solution Overview
Problem
Existing methods for applying varnish to electric motor components often result in varnish flowing away from intended locations, leading to increased varnish usage and potential disruption of motor operation.
Innovation Solution
A method and system for applying varnish to electric motors, involving a varnish injector positioned above a stator slot, depressing an intermediate layer to create gaps, and applying varnish into these gaps between the intermediate layer and the slot walls, ensuring precise application and distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If varnish is applied to electric motor components, then protection against corrosion and contaminants is improved, but varnish may flow away from intended location increasing total varnish usage and potentially disrupting operation of other parts
Solution Approach 1:
The patent divides the varnish application process into discrete segments by positioning the injector above each slot individually and applying varnish in controlled portions. The intermediate layer is depressed in a segmented manner to create discrete gaps for varnish application, preventing uncontrolled flow to adjacent areas.
Solution Approach 2:
The patent applies varnish locally to specific gaps between the intermediate layer and slot walls rather than applying it broadly. The injector is positioned to target precise locations above each slot, and varnish is applied only where the depressed intermediate layer creates openings, ensuring protection is provided exactly where needed without excess.
2Reliability
If varnish is applied to electric motor components, then protection against corrosion and contaminants is improved, but varnish may flow away from intended location disrupting operation of other parts
Solution Approach 1:
The varnish application is segmented by slot and by gap within each slot. The injector applies varnish to specific gaps created by depressing the intermediate layer, preventing varnish from flowing into areas where it would disrupt motor operation. Each slot is treated independently with controlled varnish placement.
Solution Approach 2:
Varnish is applied locally to the specific gaps between the intermediate layer and slot walls where protection is needed. The injector targets precise locations and the varnish is contained within the slot structure, preventing it from flowing to other motor components where it could cause operational disruption.
3Quantity of substance
If varnish is applied uniformly to all areas, then coverage is improved, but precision of application to specific gaps is reduced
Solution Approach 1:
The patent applies varnish with high precision to specific gaps between the intermediate layer and slot walls rather than applying it uniformly. The injector is positioned above each slot and varnish is applied only where gaps exist, ensuring precise placement in the exact locations where protection is needed while maintaining adequate coverage.
Solution Approach 2:
The application process uses feedback from the intermediate layer depression - varnish is applied only where the depressed layer creates openings. The system responds to the actual gap formation rather than applying varnish uniformly, ensuring precision while maintaining coverage where needed.
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 method achieves more precise and even varnish application along the stator slots, reducing waste and ensuring consistent protection of motor components, thereby enhancing the operational reliability of electric motors.
Implementation Method 1
applying varnish from the varnish injector into a gap defined between the intermediate layer and a wall of the slot
Data Source
AI summary
A method for applying varnish to an electric motor includes locating a varnish injector above a slot of a stator of the electric motor, depressing an intermediate layer in the slot with the varnish injector, and applying varnish from the varnish injector into a gap defined between the intermediate layer and a wall of the slot.