Dishwasher Straining Member to Prevent Circulation Pump Clogging
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Solution Overview
Problem
In dishwashers, dirt particles often scatter and accumulate in the washing tub, leading to clogging of the water line and inefficient washing due to improper mounting or damage of strainer, microfilter, and coarse filter structures, which affects the operation of spraying members, circulation pump, and mechanical valves.
Innovation Solution
An additional straining member is placed between the filter group and the circulation pump to retain dirt particles before they enter the pump, with a delivery system that includes a first delivery line for the mechanical water guiding valve and a second for the spraying members, ensuring efficient operation and reuse of water, and featuring openings with a cross-sectional area matching the first delivery line to maintain pressure and permeability comparable to the microfilter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If strainer, microfilter and coarse filter structures are used to retain dirt particles, then the water line is protected from clogging, but the filtering components accumulate dirt and require removal and cleaning by the user
Solution Approach 1:
The filter system is designed to automatically clean itself through the washing machine's washing cycles. Dirt accumulated on the filter structures is washed away by the water flow during operation, eliminating the need for manual removal and cleaning by the user while maintaining continuous protection of the water line from clogging
2Productivity
If strainer, microfilter and coarse filter structures are properly mounted and maintained, then efficient filtering is achieved, but improper mounting or damage causes clogging of spraying members, circulation pump and mechanical valves
Solution Approach 1:
The filtering system is divided into multiple independent filter structures (strainer, microfilter, and coarse filter) that can function separately. This segmentation ensures that if one filter becomes damaged or improperly mounted, the other filters continue to provide protection, preventing complete system failure and maintaining reliable operation of the spraying members, circulation pump, and mechanical valves
3Reliability
If multiple filter structures are used to retain dirt particles, then comprehensive filtering is achieved, but the system complexity increases and requires user intervention for cleaning
Solution Approach 1:
Multiple filter structures (strainer, microfilter, and coarse filter) are combined into a single integrated filter system that performs comprehensive filtering in one location. This merging maintains high filtering effectiveness while simplifying the overall system architecture and reducing the need for separate maintenance procedures for each individual filter component
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
This solution prevents clogging of the circulation pump, mechanical water guiding valve, and spraying members, enhancing washing efficiency by effectively retaining dirt particles and maintaining water pressure, thus ensuring continuous operation and improved cleaning performance.
Implementation Method 1
an additional straining member which is provided between the filter group and the circulation pump. By means of the additional straining member, the dirt particles passing through the filter group are retained before entering the circulation pump
Implementation Method 2
a plurality of openings which are provided on the straining member; and the first delivery line which has the same cross-sectional area as the total of the areas of the openings. The water flowing through the first delivery line moves through the straining area without any decrease in the cross-sectional area
Data Source
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AI summary
The present invention relates to a dishwasher (1) comprising a body (2); a washing tub (3) which is provided in the body (2) and wherein the washing process is performed; a sump (18) which is provided on the base of the washing tub (3) and wherein water is collected; a filter group (7) provided in the sump (18) and having a main strainer (4) which strains the dirt particles breaking off from the kitchen items placed into the washing tub (3) and a microfilter (5) and a coarse filter (6) which are positioned under the main strainer (4); a plurality of spraying members (8) which provide the delivery of water to the kitchen items in the washing tub (3); a circulation pump (9) which enables the water to be guided to the spraying members (8); and a mechanical water guiding valve (10) which enables the water to be guided to the desired spraying members (8) in order.