Dishwasher Spinner Retainer Design for Stable Rotation and Water Flow
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Solution Overview
Problem
Existing dishwashers experience issues with spinner vibration and water flow obstruction due to the direct connection of the spinner to the sprayer, leading to unstable rotation and uneven water distribution.
Innovation Solution
A dish washer design that includes a sprayer with a water guide, a spinner, and a retainer system, where the spinner is securely mounted via a rotation shaft and bracket, minimizing water obstruction and ensuring stable rotation, with a sloping surface and inner column to control water flow direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the spinner is directly connected to the sprayer, then the structure is simple, but the spinner vibrates and rotates unstably
Solution Approach 1:
The patent introduces a retainer as an intermediary component between the sprayer and the spinner. The retainer includes a rotation shaft that passes through the spinner and contacts the water guide, serving as a mediator that enables stable rotation while maintaining structural simplicity. This resolves the contradiction by adding a minimal intermediate element that provides the necessary stability without significantly increasing complexity.
2Reliability
If the retainer is added to support spinner rotation, then the spinner rotates stably, but the retainer may obstruct water flow
Solution Approach 1:
The retainer is designed with a specific geometric configuration where the rotation shaft has a first portion and a second portion with different diameters, and includes a sloping surface. The second peripheral rib is positioned at the same height as or higher than the lower surface of the water guide to minimize obstruction. This local optimization of the retainer's geometry allows it to provide stable rotation support while minimizing interference with water flow paths.
3Reliability
If the rotation shaft diameter is increased to secure the spinner, then the spinner is held firmly, but water flow is blocked
Solution Approach 1:
The rotation shaft is designed with varying diameter along its length, with a first rotation shaft portion and a second rotation shaft portion having different diameters. The sloping surface transitions between these portions. This parameter variation allows the rotation shaft to provide sufficient mounting security where needed while maintaining smaller diameter sections that minimize water flow blockage, thus resolving the contradiction between security and flow volume.
Data Source
AI summary
The present disclosure relates to a dish washer. The dish washer includes: a tub forming a washing space; and a sprayer positioned within the tub, for spraying water to the washing space. The sprayer includes: a water guide with a discharge hole formed in an lower surface to release water; a spinner positioned under the discharge hole and rotatably placed; and a retainer that supports the rotation of the spinner. The retainer includes a rotation shaft that penetrates the spinner and makes contact with the water guide.