Dishwasher
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Solution Overview
Problem
In linear type dishwashers, the alignment between the rail and nozzle is critical for stable water spray, but the spray angle of the fixed nozzle can change if the bottom plate is inclined, affecting the alignment and efficiency of water distribution.
Innovation Solution
A dishwasher design that includes a nozzle with a support portion that compensates for the inclination of the bottom plate, maintaining a constant spray angle by adjusting its contact points and using a sealing member to ensure stable sealing of the nozzle opening, regardless of the plate's inclination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the fixed nozzle is installed on the bottom plate of the washing tub, then the nozzle structure is simplified and easy to manufacture, but the spray angle of the fixed nozzle changes if the bottom plate is inclined
Solution Approach 1:
The support portion is designed with an inclined lower surface that allows it to dynamically adjust its contact point with the base portion according to the inclination of the bottom plate. This dynamic adjustment mechanism enables the nozzle to maintain a constant spray angle relative to the rail regardless of the bottom plate's inclination, while still being easily installed on the bottom plate.
Solution Approach 2:
The support portion changes its geometric configuration by rotating around the contact point on the base portion. This parameter change in the support portion's orientation compensates for the bottom plate's inclination, maintaining the nozzle's spray angle consistency while preserving the simple installation structure.
2Ease of operation
If the nozzle is fixed on the bottom plate, then the installation is simple, but the alignment between the rail and nozzle becomes unstable when the bottom plate is inclined
Solution Approach 1:
The support portion acts as a dynamic element that automatically adjusts the nozzle's position and orientation based on the bottom plate's inclination. By rotating around the contact point on the base portion, it maintains stable alignment between the rail and nozzle, ensuring reliable water spray alignment without complicating the installation process.
3Stability of the object's composition
If the support portion contacts the base portion at multiple points, then the nozzle is stable, but the spray angle cannot be maintained when the bottom plate is inclined
Solution Approach 1:
The support portion transitions from a static multi-point contact structure to a dynamic single-point contact structure. By contacting the base portion at only one point on its inclined lower surface, it can rotate to compensate for bottom plate inclination, maintaining both nozzle stability and spray angle consistency simultaneously.
Data Source
AI summary
A dishwasher including a washing tub having a bottom plate having an opening, a nozzle having a spraying hole configured to spray water, the nozzle passing through the opening, and a sealing member configured to seal the opening. The bottom plate includes a base portion on which the nozzle is installed, and a protruding portion extending downward from the base portion to form the opening, the nozzle includes a support portion on the base portion, and a nozzle side portion facing the protruding portion. A part of the support portion contacts the base portion and another part of the support portion is spaced apart from the base portion according to an inclination of the base portion, where the sealing member is disposed between the protruding portion and the nozzle side portion. The spraying trajectory of the water can thus be kept constant despite the inclination deviation of the base portion.