Dishwasher with at least one light source controlled dependent on the moving position of rack
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Solution Overview
Problem
Dishwashers lack effective user guidance and safety features to prevent damage from improperly loaded or moved holding baskets, leading to potential collisions and item detachment during door closure.
Innovation Solution
A dishwasher with a non-contact position detection system for holding baskets, using inductive or capacitive sensors, and a control device that adjusts light sources based on the basket's travel position, providing visual cues for proper alignment and movement through varying illuminance, color, and length of light strips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If no position detection and visual feedback system is installed, then the device complexity remains low, but user guidance is insufficient leading to collisions and item detachment
Solution Approach 1:
The patent replaces mechanical position detection mechanisms with a non-contact detection system using inductive or capacitive sensors. This substitution provides accurate basket position detection and visual feedback without adding mechanical complexity to the moving basket components themselves.
Solution Approach 2:
The patent introduces an intermediary control device that receives signals from non-contact sensors and activates light sources to provide visual feedback. This intermediary system bridges the gap between simple sensor detection and user guidance, enabling sophisticated user feedback without directly complicating the basket mechanism.
2Reliability
If safety features are added to detect basket position, then collision prevention is improved, but the device complexity increases
Solution Approach 1:
The patent employs non-contact inductive or capacitive sensors instead of mechanical switches or limit switches to detect basket position. This approach enhances safety by providing reliable position detection without mechanical wear or failure points, while keeping the detection system itself relatively simple.
Solution Approach 2:
The patent implements a feedback system where light sources are activated based on detected basket position to provide real-time visual guidance to users. This feedback mechanism enhances safety by preventing collisions and item detachment, while the feedback itself is achieved through a simple light indication system rather than complex active intervention.
3Ease of manufacture
If non-contact detection system is implemented, then ease of manufacture is improved by maintaining existing basket design, but measurement precision requirements increase
Solution Approach 1:
The patent uses non-contact inductive or capacitive sensors that detect the position of the basket without physical contact. These sensors can detect the presence and position of the basket based on its electrical properties or dielectric characteristics, maintaining the existing mechanical basket design while achieving sufficient detection precision for safety guidance purposes.
Solution Approach 2:
The patent changes the detection parameter from mechanical contact to electrical or dielectric field interaction. By detecting changes in electrical capacitance or inductance as the basket moves, the system achieves position detection without mechanical contact, preserving the simple basket design while obtaining adequate positional information.
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
Enhances user guidance and safety by preventing collisions and item detachment, allowing for easier handling of the baskets and maintaining the existing design of storage baskets without complex adjustments.
Implementation Method 1
A dishwasher (1) with a non-contact position detection system for holding baskets, using inductive or capacitive sensors
Implementation Method 2
A dishwasher (1) with a non-contact position detection system for holding baskets, using inductive or capacitive sensors
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
A dishwasher (1), in particular a domestic dishwasher, with a washing compartment (2) which has a loading opening (4), in particular at the front, a door (3) which closes the loading opening (4) and at least one door (3) which extends out of and into the washing compartment (2). This receiving basket (5, 6) for items to be washed, which can be moved in, comprises a device (18), in particular one that works without contact, for detecting at least one travel position of the receiving basket (5, 6) and a control device (26), which has at least one in and/or on the Dishwasher (1) arranged light source (27) depending on the at least one travel position of the receiving basket (5, 6) controls.