Dishwasher Sump Layout for Lower Power and Cleaner Valve Operation
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Solution Overview
Problem
Dishwashers face increased power consumption and manufacturing costs due to the large volume of the sump, which also leads to contamination of the passage opening-closing part by foreign substances, affecting operation and customer satisfaction due to difficult filter assembly and potential noise and damage.
Innovation Solution
A dishwasher design that reduces the volume and height of the sump by integrating the washing water motor and impeller part, includes a heating space, and features a vertically movable opening-closing valve with introduction preventing parts to prevent foreign substance interference and facilitate filter assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the sump volume is increased to accommodate the washing water motor and impeller part, then the washing water storage capacity is improved, but the power consumption and manufacturing cost are increased
Solution Approach 1:
The washing water motor and impeller part are nested within the sump structure, with the motor positioned in the upper portion and the impeller part in the lower portion. This nesting arrangement allows the sump to accommodate all components without increasing its external volume, thereby maintaining washing water storage capacity while avoiding increased power consumption and manufacturing costs associated with a larger sump.
2Quantity of substance
If the sump volume is increased, then the washing water storage capacity is improved, but the manufacturing cost and process complexity are increased
Solution Approach 1:
The sump is designed as an integrated structure that nests the motor and impeller part within its volume. The motor is positioned in the upper portion and the impeller part in the lower portion, both fitting within the existing sump boundaries. This eliminates the need for a larger sump design, thereby reducing manufacturing cost and simplifying the manufacturing process while maintaining adequate washing water storage capacity.
3Ease of operation
If the opening-closing member is provided with a driving part, then the passage control function is improved, but the susceptibility to foreign substance interference is increased
Solution Approach 1:
The driving part of the opening-closing member is extracted and positioned in the upper portion of the sump, separated from the lower portion where washing water and foreign substances are present. This spatial separation allows the opening-closing member to maintain its passage control function while protecting the driving part from foreign substance interference, as washing water is discharged from the lower portion before reaching the driving part.
4Reliability
If the filter device is disassembled for cleaning after prolonged operation, then the filtering performance is improved, but the assembly difficulty is increased
Solution Approach 1:
The filter device is segmented into multiple filter members that can be independently removed and cleaned. Each filter member is designed as a separate component that can be easily detached from the filter housing, allowing users to clean them individually without disassembling the entire filter device. This segmentation maintains high filtering performance while significantly reducing assembly difficulty compared to integrated filter designs.
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
Decreases power consumption, prevents contamination of the passage opening-closing part, and simplifies filter assembly, enhancing operational efficiency and customer satisfaction by reducing noise and potential damage.
Implementation Method 1
a heating space under the impeller part, and provided with a heater
Data Source
AI summary
Provided is a dishwasher, which includes a washing chamber, a sump, and a washing water pump. The washing chamber accommodates a dish. The sump stores washing water supplied to the washing chamber. The washing water pump is provided to the sump and generates suction force for circulating washing water. The washing water pump includes a washing water motor for generating driving force, an impeller part disposed under the washing water motor and rotated by the driving force, and a heating space under the impeller part. Washing water is heated by a heater in the heating space.