Dishwasher Frame Injector Design to Reduce Top-Door Contamination
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Solution Overview
Problem
Conventional dishwashers face limitations in both front loading and top loading capabilities, and they often suffer from contamination issues due to the design of their top doors and frames.
Innovation Solution
A dishwasher design featuring a tub with both front and top openings, a rotatable top door, a cover frame with a seating portion and frame injector for washing water, and a connection system to drain collected water back into the tub, preventing contamination by directing washing water and foreign substances away from the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a front loading type dishwasher is used, then the structure is simple, but food residues may fall on the floor during loading
Solution Approach 1:
The dishwasher is divided into two separate loading openings: a front opening for basket access and a top opening for direct tableware loading. This segmentation allows users to choose the appropriate loading method, preventing food residues from falling on the floor while maintaining structural simplicity through modular design
2Adaptability or versatility
If a top loading type dishwasher is used, then top loading is enabled, but interference between the upper space of the tub and the door makes it difficult to load tableware of certain size
Solution Approach 1:
The loading opening is segmented into two parts: a top opening with sufficient height for loading large tableware directly into the tub, and a front opening for basket access. This eliminates the interference problem between the door and upper space while maintaining top loading capability
Solution Approach 2:
Instead of relying solely on vertical space for loading, the design adds a horizontal dimension by providing a front opening that allows access to the basket from the front. This multi-dimensional approach to loading enables users to choose the most convenient method for different tableware sizes
3Adaptability or versatility
If a top door and cover frame structure is used, then both front and top loading are enabled, but contamination may occur on the frame supporting the top door
Solution Approach 1:
The frame injector is extracted as a separate functional component mounted on the cover frame. It independently performs the function of removing contaminants from the frame surface through water injection, separating the cleaning function from the structural support function of the frame
Solution Approach 2:
The frame injector enables the cover frame to clean itself by injecting water to wash away foreign substances and food residues that accumulate on the frame surface during operation, making the frame self-maintaining without requiring manual cleaning
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 convenient front and top loading of tableware while effectively preventing contamination of the cover frame by using the frame injector to remove foreign substances and drain collected water, enhancing the overall usability and hygiene of the dishwasher.
Implementation Method 1
a frame injector disposed on the cover frame to inject washing water from one side of the cover frame
Data Source
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AI summary
The present disclosure relates to a dishwasher having a structure improved in convenience of use. The dishwasher includes a tub having a front opening and a top opening, a front door configured to open and close the front opening, a cover frame disposed on the top opening and including an opening opened in the up-down direction, a top door configured to open and close the opening of the cover frame, and a frame injector disposed on the cover frame to inject washing water from one side of the cover frame.