Pull-Out Dish Rack Steam Nozzle for Precise Deep-Item Cleaning
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Solution Overview
Problem
Existing dishwashers with steam cleaning capabilities struggle to effectively clean deeply soiled items due to the need for precise positioning of items over the steam jet, which is often not feasible, especially with deep items having small openings, and the steam jet's reduced effectiveness at larger distances from the nozzle.
Innovation Solution
A dishwasher design where the steam nozzle is integrated onto a pull-out dish rack, allowing for exact positioning of items and fluidic coupling with a steam generator, enabling precise steam delivery directly to the items, with the nozzle head capable of pivoting for adjustable steam cleaning positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the steam jet opening is positioned below the basket floor to avoid impeding basket movement, then the basket can be pulled out and pushed in freely, but the distance between the steam jet and items to be washed increases, reducing steam pressure and temperature
Solution Approach 1:
The steam nozzle is made movable by attaching it to the pull-out basket, allowing the nozzle position to dynamically adjust with basket movement. This resolves the contradiction by enabling both free basket operation and maintained proximity to items for effective steam cleaning.
Solution Approach 2:
The pull-out basket serves as an intermediary carrier for the steam nozzle, linking the fixed steam generator to the movable items. This intermediary arrangement allows the nozzle to move with the basket while maintaining optimal positioning relative to items during both loaded and unloaded states.
2Ease of operation
If the steam jet opening is positioned below the basket floor, then the basket can be pulled out and pushed in freely, but the steam cleaning effect is weakened due to large distance
Solution Approach 1:
The steam nozzle is made movable by attaching it to the pull-out basket, allowing the nozzle position to dynamically adjust with basket movement. This resolves the contradiction by enabling both free basket operation and maintained proximity to items for effective steam cleaning.
3Reliability
If deep items of crockery are positioned precisely above the steam jet, then effective steam cleaning is achieved, but this requires careful loading and markings which are not always possible
Solution Approach 1:
The system performs self-positioning by attaching the steam nozzle directly to the basket structure. The nozzle automatically moves with the basket and can be positioned to target specific areas without requiring user intervention for precise item placement or special basket markings.
Solution Approach 2:
The steam nozzle is made movable by attaching it to the pull-out basket, allowing the nozzle position to dynamically adjust with basket movement. This resolves the contradiction by enabling both free basket operation and maintained proximity to items for effective steam cleaning.
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
This design ensures reliable and effective steam cleaning of both flat and deep items by reducing the distance between the nozzle and items, maintaining high steam pressure and temperature, thus enhancing cleaning efficacy.
Implementation Method 1
a steam generator (2) for generating steam and a steam nozzle (3) supplied with steam by the steam generator
Data Source
Figure 1
Figure 2
Figure 3A~3D
AI summary
The invention relates to a device (1) for the provision of steam in the washing chamber of a dish washing machine, having at least one dish rack which can be pulled out of the washing chamber, the rack having a nozzle head (24, 29, 30, 32) for releasing steam into the washing container. The invention is characterized in that the nozzle body (24, 29, 30, 32) is attached to the dish rack and can be fluid coupled to the steam generator (2) via a detachable fluid coupling, wherein the nozzle body is fluid coupled to the steam generator when the dish rack is in the inserted position.