Dishwasher Floor-Projection Indicator Layout for Door and Leak Protection
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Solution Overview
Problem
Existing dishwasher designs face challenges in projecting status information externally without interfering with the door operation and are prone to damage from water leakage, with complex and costly configurations that complicate manufacturing and spatial utilization.
Innovation Solution
A dishwasher with an indicator that projects a light beam onto the external floor, featuring a holder with a light source, lenses, and a reflector, supported by a stopper rib, which is securely fixed on the upper surface of the lower frame to prevent interference and minimize components, while simplifying the electrical connection harness module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display device is attached to the lower surface of the lower frame disposed on a lower area of the tub, then the display device can be positioned to project status information, but the display device may interfere with door rotation and suffer physical damage
Solution Approach 1:
The patent relocates the display device from the lower surface of the lower frame to the upper surface, changing the spatial dimension of attachment. This dimensional shift removes the display device from the door's rotation path while maintaining its functionality for projecting status information onto the floor.
Solution Approach 2:
The patent separates the display device attachment location from the lower frame's lower surface, positioning it on the upper surface instead. This segmentation isolates the display device from the harmful interaction zone between the door and lower frame during operation.
2Reliability
If the display device is attached to the lower surface of the lower frame, then status information can be projected, but leaked wash water may flow into the display device and damage electrical components
Solution Approach 1:
The patent moves the display device attachment from the lower surface to the upper surface of the lower frame, changing the vertical dimension. This relocation places the electrical components above the potential water leakage path, preventing water from flowing into the display device while maintaining manufacturing simplicity.
3Ease of manufacture
If a complex configuration with separate inner casing and multiple modules is used, then the display device can be constructed, but the quantity of components increases excessively and spatial utilization is reduced
Solution Approach 1:
The patent integrates the light source module, lens module, and display module into a single integrated display device structure, eliminating the need for separate inner casings. This merging reduces the total component quantity while maintaining all necessary functions for projecting status information.
Solution Approach 2:
The lower frame's upper surface serves multiple functions: it provides structural support for the dishwasher and simultaneously serves as the mounting surface for the display device. This multi-functionality reduces the need for additional dedicated mounting structures and components.
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
The solution effectively prevents damage from door operation, reduces manufacturing costs, and enhances spatial utilization by simplifying the indicator's structure and electrical connections, allowing for intuitive status display without increasing component complexity.
Implementation Method 1
a first lens configured to refract the light beam generated by the light source module; a second lens configured to refract the visible light beam of which the traveling path is changed
Implementation Method 2
a reflector configured to change a traveling path of the visible light beam having passed through the LCD module toward the external floor
Implementation Method 3
an LCD module configured to generate the visual image by partially blocking the light beam having passed through the first lens
Data Source
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AI summary
There is disclosed a dishwasher that may significantly reduce manufacturing costs by simplifying and communizing the arrangement and fixing structure of individual function modules of an indicator projecting status information of the dishwasher as an image on an external floor.