Dishwasher Sump Filter Structure for Stick-Shaped Debris Blocking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional dishwashers face issues with filtering stick-shaped foreign substances, which can block drainage paths and damage internal components, and lack an auxiliary handle for easy filter device detachment.
Innovation Solution
A dishwasher with a filter device featuring a dual-body structure and ribs to prevent stick-shaped foreign substances from entering the drainage path, along with a handle for easy detachment and a mesh member for filtering various-sized foreign substances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional filter device with stacked first and second filters is used, then foreign substances can be filtered, but stick-shaped foreign substances can pass through and block the drainage path
Solution Approach 1:
The filter device is divided into multiple functional components: a first filter for general filtration, a second filter with mesh member for fine filtration, and a foreign-substance plate with through-holes specifically designed to intercept stick-shaped foreign substances. This segmentation allows each component to address specific filtration needs, preventing stick-shaped substances from reaching the drainage path while maintaining overall system reliability.
2Ease of operation
If the filter device is detachably installed in the sump cover, then maintenance is easier, but the foreign-substance plate gets caught in the injection arm making detachment difficult
Solution Approach 1:
The foreign-substance plate is extracted as a separate, independently removable component from the filter device assembly. It is specifically designed to be detachable from the sump cover without being coupled to the injection arm, allowing users to remove and clean the plate separately without interference from other components, thus simplifying maintenance operations.
3Device complexity
If no auxiliary handle is provided on the filter device, then the structure is simpler, but users cannot easily hold and remove the filter device stacked with foreign substances
Solution Approach 1:
An auxiliary handle is added as an intermediary component to the filter device, providing users with a convenient grip point. This handle serves as a mediator between the user's hand and the filter device, enabling easy holding, manipulation, and removal of the device even when it is stacked with foreign substances, without significantly complicating the overall structure.
4Reliability
If stick-shaped foreign substances pass through the filter device, then filtration is incomplete, but they can damage the sump, pump or internal walls of the filter device
Solution Approach 1:
The foreign-substance plate with specifically sized through-holes is positioned upstream in the filtration path to preliminarily intercept and block stick-shaped foreign substances before they can reach the pump or damage internal walls. This preliminary protective action prevents harmful substances from progressing further into the system, safeguarding critical components from damage.
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
Efficient filtration of stick-shaped foreign substances, prevention of drainage blockages, and smooth detachment of the filter device without damaging internal components.
Implementation Method 1
a first filter including holes having preset sizes provided there around and a second filter having a mesh member provided there around. Wash water passes through the first filter and the second filter to be drained.
Data Source
AI summary
Disclosed is a dishwasher comprising a tub defining a washing space, a sump provided to collect the wash water injected into the tub, a supply pump provided to supply the wash water stored in the sump to the tub, a filter provided in the sump and comprising a first body having a plurality of first holes formed along a lateral circumferential surface; and a second body arranged in a radially inner side of the first body and having a plurality of second holes formed along a lateral circumferential surface, wherein the second body comprises an external wall portion in which the second holes are formed and an internal wall portion positioned in a radially inner side of the external wall and vertically extended.