Electronic Water Pump Gasket Locking Structure for Noise Reduction
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Solution Overview
Problem
Electronic water pumps experience significant noise due to friction and collision between the impeller assembly and the gasket, which rotates with the pump head, leading to abrasion and operational noise.
Innovation Solution
Incorporating a rotation stopping structure between the first gasket and the mounting portion, along with a second gasket between the impeller assembly and the isolation sleeve, to prevent the gasket from rotating and colliding, thereby reducing noise through the use of a simple and easy-to-process design featuring limiting ribs and clamping structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gasket is disposed between the impeller assembly and the pump head to isolate them, then abrasion between the impeller assembly and pump head is reduced, but the gasket rotates with the impeller assembly and rubs against the impeller assembly or pump head, generating relatively large noise
Solution Approach 1:
The gasket is divided into two functional parts: a stationary first gasket fixed to the pump head for isolation, and a rotating second gasket attached to the impeller assembly. This segmentation allows each gasket to perform its specific function without rotating and rubbing against components, thereby eliminating the noise problem while maintaining abrasion resistance.
Solution Approach 2:
The first gasket acts as an intermediary element between the pump head and the rotating impeller assembly. By being fixed to the pump head rather than rotating with the impeller, it provides isolation without the harmful rubbing action that generates noise, thus serving as a mediator that prevents both abrasion and noise.
2Object-generated harmful factors
If the first gasket is fixed to the mounting portion using a rotation stopping structure, then the first gasket cannot rotate with the impeller assembly, reducing noise, but the structure becomes more complex
Solution Approach 1:
The rotation stopping structure is merged with the first gasket itself, forming an integrated component. The limiting rib is incorporated into the gasket's structure, eliminating the need for separate rotation-stopping mechanisms and keeping the overall structure simple while effectively preventing rotation and reducing noise.
Solution Approach 2:
The first gasket is designed with non-uniform thickness, featuring a thicker portion that serves as the rotation stopping structure. This local variation in quality allows the gasket to perform both isolation and rotation prevention functions within a single component, avoiding the need for additional complex structures.
Data Source
AI summary
An electronic water pump, including: a pump head, a pump housing, an isolation sleeve, an impeller assembly, a first gasket, and a rotation stopping structure, wherein a mounting portion is disposed on the pump head; the pump head is used for sealing the pump housing; the isolation sleeve is disposed between the pump head and the pump housing; the impeller assembly is disposed between the pump head and the isolation sleeve; and the first gasket is disposed at an end of the mounting portion that is close to the impeller assembly, and the first gasket is used for isolating the mounting portion from the impeller assembly.