Off-Center Dishwasher Spray Arm for Upright Tall Item Loading
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Solution Overview
Problem
Conventional household dishwashers have limited space for washing large items due to the central placement of the spray device, which restricts the placement of bulky items and requires them to be laid flat, resulting in inefficient use of space.
Innovation Solution
The spray device is offset and detachably connected to a liquid inlet, creating a second, higher partial storage space next to the working area, allowing for upright placement of tall items and facilitating easy installation and removal, with an optional testing device to prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the spray device is arranged centrally above the washing basket, then the washing liquor can be evenly applied to items during rotation, but the storage space for tall items is limited and requires them to be laid flat
Solution Approach 1:
The spray device is positioned off-center rather than centrally, creating an asymmetric arrangement that generates a larger clearance zone on one side of the washing chamber. This asymmetric positioning allows tall items to be stored upright in the clearance area without interfering with the spray device's rotational path, while still maintaining effective washing coverage.
2Stability of the object's composition
If the spray device is fixed permanently, then the structure is stable, but installation and removal are difficult
Solution Approach 1:
The spray device is designed as a separable component that can be detached from the liquid inlet connection. This segmentation allows the spray device to be easily installed or removed by simple attachment and detachment operations, while maintaining structural stability during washing operations through secure connection design.
Data Source
Figure 1
Figure 2
AI summary
A household dishwasher (GS) with a wash chamber (SB) for receiving dishes, cutlery or similar items to be cleaned (SG1;SG2), wherein water and/or cleaning fluid can be supplied to the wash chamber (SB) via at least one spray device (SA) and wherein this spray device (SA) is arranged above a dish basket (UK), is designed such that the spray device (SA) is arranged off-center in such a way that a second partial storage chamber (AR2) for items to be cleaned (SG2) remains next to the working area of the spray device (SA), which is raised compared to a first partial storage chamber (AR1) for items to be cleaned (SG1) located below a plane of movement of the spray device (SA).