Dishwasher Door Opening via Resilient Decorative Panel
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Dishwashers with hinged doors require a handle for opening due to sealing constraints, which compromises aesthetics and user experience, and existing solutions either require modifications or are difficult to implement.
Innovation Solution
A dishwasher design featuring a resiliently mounted decorative panel with a sensor system that activates an opening actuator upon movement, allowing the door to be opened without a handle, ensuring compatibility with handle-free kitchen designs and incorporating child safety features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a handle member is mounted on the decorative panel to enable door opening, then the door can be opened by pulling on the handle member, but the aesthetic appearance is compromised and the design is less compatible with handle-free kitchen designs
Solution Approach 1:
The handle member is completely removed from the decorative panel. Instead, the decorative panel itself is made resiliently mounted to the door, allowing it to move independently to detect opening intent without requiring a separate handle component.
Solution Approach 2:
The decorative panel serves dual functions: it maintains aesthetic appearance as a visual element and simultaneously provides the opening detection function through its resilient mounting and movement capability, eliminating the need for a separate handle.
2Ease of operation
If the door is mounted to allow inward deformation for automatic opening mechanisms, then automatic opening can be achieved, but sealing is compromised and leakage occurs
Solution Approach 1:
The door system is segmented into three independent components: the fixed door structure maintaining sealing, the resiliently mounted decorative panel for detection, and the opening actuator mechanism. This segmentation allows each component to perform its function without compromising the others.
Solution Approach 2:
The resiliently mounted decorative panel acts as an intermediary between user input and the opening mechanism. It detects opening intent through its movement capability while the actual opening force is applied by the actuator mechanism, preventing direct force transmission that would compromise the seal.
3Ease of operation
If the decorative panel is resiliently mounted to allow movement detection, then handle-free operation is achieved, but the actuation force must be precisely controlled to avoid too weak (difficult to grip) or too great (automatic full opening) forces
Solution Approach 1:
The resilient mounting of the decorative panel provides dynamic characteristics with defined spring constants that naturally limit the force range. The system transitions from static to dynamic behavior, where the elastic properties of the mounting automatically regulate the actuation force within safe boundaries.
Solution Approach 2:
The actuation force parameters are controlled by selecting appropriate spring constants for the resilient mounting elements. By changing the physical parameters of the elastic mounting (spring constant, material properties), the system achieves optimal force characteristics without complex control mechanisms.
4Ease of operation
If the sensor is located on the side of the appliance, then automatic opening can be detected, but the dishwasher cannot be integrated into kitchen units with inaccessible side walls
Solution Approach 1:
The sensor detection function is moved from the lateral dimension (side wall) to the frontal dimension (decorative panel surface). This dimensional change allows the dishwasher to be integrated into kitchen units with inaccessible side walls while maintaining automatic opening detection capability.
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 easy and aesthetically pleasing operation of the dishwasher door without a handle, maintaining system compatibility and safety, with adjustable actuation force and visual appeal, and implementing a child safety feature to prevent accidental activation.
Implementation Method 1
A decorative panel resiliently mounted to the door
Data Source
AI summary
A dishwasher includes a movable door, an opening mechanism and an opening actuator configured to move the door from a closed position to an at least partially open position. A decorative panel is resiliently attached to the door. A sensor is configured to detect movement of the decorative panel relative to the door. A controller is configured to activate the opening actuator based on movement detected by the sensor.