Dishwasher Rack Display for Visible Loading-Time Wash Feedback
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Solution Overview
Problem
In fully integrated dishwashers, the display facility for operation and program information is difficult to see when the door is open, making it inconvenient for users to view output display values and optimize wash process parameters during loading and unloading.
Innovation Solution
Assigning a display facility to a wash rack allows easy examination of output data without partially closing the door, using pressure-sensitive piezo arrangements to determine weight and convey information about wash rack loading, program sequences, and operating agent levels, with wireless control and alphanumeric displays for clear instructions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the display facility is located on the door in the upper end edge region, then the display can be integrated into the door structure, but the display becomes difficult to see when the door is open and items are being loaded or unloaded
Solution Approach 1:
The display facility is segmented from the door structure and relocated to the wash rack. This allows the display to be positioned independently on the wash rack where it remains visible during loading and unloading operations, while the door structure remains simple and integrated.
Solution Approach 2:
The wash rack acts as an intermediary carrier for the display facility. By placing the display on the wash rack rather than directly on the door, the system achieves both structural integration (through wireless communication between rack and door control) and operational visibility (as the rack is accessible during loading).
2Ease of operation
If the door is opened fully to load the wash compartment, then loading and unloading is facilitated, but the display facility becomes inaccessible and difficult to read
Solution Approach 1:
The display function is segmented from the door and attached to the movable wash rack. This allows the display to travel with the rack during loading operations, maintaining information accessibility regardless of door position.
Solution Approach 2:
The display is moved from the vertical door surface to the horizontal wash rack structure, creating a new spatial dimension for display placement. This positional change ensures the display remains within the user's field of view during loading, as the rack is positioned at ergonomic height and angle.
3Ease of operation
If the display facility is moved to the wash rack, then the display remains visible during loading operations, but additional structural elements and wireless communication systems are required
Solution Approach 1:
The wash rack is given multiple functions: it serves as the structural support for dishes, a movable platform for the display facility, and a wireless communication node. This multi-functionality reduces the need for separate dedicated display structures and their associated complex wiring and power systems.
Solution Approach 2:
The display facility on the wash rack is powered and controlled through wireless communication with the door control system. The rack itself serves its own display function without requiring separate power cables or control wiring, reducing overall system complexity.
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
Enables users to respond to displayed information during loading, optimizing wash processes by adjusting item placement and replenishing agents without fully closing the door, improving convenience and efficiency.
Implementation Method 1
Weight can be determined in a structurally simple and reliable manner in particular by way of pressure-sensitive piezo arrangements within the roller paths of the at least one dish rack
Data Source
AI summary
A dishwasher is provided that has a door and a wash compartment that is closed off by the door. The wash compartment receives items to be treated and has a movable dish rack in which items to be cleaned are supported. The movable dish rack is moved from a treatment position in which the wash compartment is closed to an access position in which loading and unloading of dishes into the dishwasher is facilitated. The dishwasher further includes a visual display facility for visual notification of operation information and/or program information of the dishwasher. The visual display facility is assigned to the dish rack.