dishwasher
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Solution Overview
Problem
Existing dishwashers with rotating injection nozzles often create dead zones where water is not injected, leading to inefficiencies, and previous dishwashers with coarse filters are not easily separable for maintenance.
Innovation Solution
A dishwasher design featuring a linear type injection structure with a separable filter assembly, including a first coarse filter that protrudes from the washing tub's bottom plate and a second coarse filter in a water storage chamber, along with a micro filter for smaller particles, allowing for easy assembly and maintenance by using interference and pivot mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a rotating injection nozzle is used, then the structure is simple, but dead zones occur where washing water is not injected
Solution Approach 1:
The injection system is segmented into a fixed nozzle with multiple injection holes and a separate movable vane, allowing the water injection function to be separated from the deflection function, thereby achieving complete coverage without dead zones
2Device complexity
If a single-piece coarse filter is used, then the filter structure is simple, but maintenance and cleaning are difficult
Solution Approach 1:
The coarse filter is divided into multiple separable parts: a first coarse filter, a second coarse filter, and a micro filter. This segmentation allows each filter component to be independently removed and cleaned, significantly improving maintenance accessibility while maintaining effective filtration
3Ease of repair
If a linear type injection structure with separable filter assembly is used, then filter maintenance is easy, but device complexity increases
Solution Approach 1:
The system uses segmented filters that can be independently accessed and removed, allowing maintenance personnel to clean or replace filter components without disassembling the entire injection system, thus improving maintainability with minimal increase in overall complexity
Solution Approach 2:
The filter assembly is extracted as a separate, easily removable component from the main injection structure, enabling independent maintenance of the filtration system without affecting the injection mechanism
Data Source
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AI summary
Disclosed herein is a dishwasher that includes a linear type injection structure with an easily separable filter assembly. The dishwasher includes a washing tub (30) configured to wash dishes, a sump (100) configured to store washing water injected toward the washing tub, and a coarse filter (72) located at a bottom plate (35) of the washing tub (30) and configured to filter foreign substances included in the washing water. Here, the coarse filter includes a first coarse filter (72a) including filter holes through which the washing water that drops to the bottom plate passes, and is configured to protrude from the bottom plate of the washing tub, and a second coarse filter (72b) located below the first coarse filter.