Dish washer
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Solution Overview
Problem
The manufacturing process of dishwasher ducts is complicated due to their complex shape, which requires multiple steps and methods like blow molding, making it inefficient and difficult to form shapes extending in multiple directions.
Innovation Solution
The duct is formed by coupling two housing components, the first and second housings, which are injected and easily hooked together, allowing for the creation of a duct shape extending in multiple directions without the need for blow molding, thereby simplifying the manufacturing process and improving productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If blow molding method is used to form duct, then complex shapes can be achieved, but manufacturing process becomes complicated and time-consuming
Solution Approach 1:
The duct is divided into multiple separate components (first duct component, second duct component, third duct component) that are manufactured independently and then assembled together. This segmentation allows each component to be formed using simpler injection molding processes rather than complex blow molding, while still achieving the overall complex duct shape through assembly of the segmented parts.
2Shape
If blow molding method is used to form duct, then complex shapes can be achieved, but manufacturing time increases
Solution Approach 1:
The duct is divided into multiple separate components (first duct component, second duct component, third duct component) that are manufactured independently and then assembled together. This segmentation allows each component to be formed using simpler injection molding processes rather than complex blow molding, while still achieving the overall complex duct shape through assembly of the segmented parts.
3Ease of manufacture
If multiple housing components are coupled to form duct, then manufacturing process is simplified, but sealing against water leakage becomes critical
Solution Approach 1:
A flexible sealing ring (elastomeric sealing element) is installed at the coupling interface between the first and second duct components. This sealing ring can be made of elastomeric material that provides reliable sealing against wash water leakage while allowing for easy installation and removal of the modular components.
Solution Approach 2:
The sealing ring is pre-installed at the coupling interface before the duct components are assembled together. This preliminary sealing preparation ensures that when the components are coupled, the sealing surfaces are already protected, preventing water leakage from the outset.
4Device complexity
If duct is formed as single component, then structure is simple, but cannot easily extend in multiple directions
Solution Approach 1:
The duct is divided into multiple separate components (first duct component, second duct component, third duct component) that can be independently configured and assembled in different orientations. This segmentation enables the duct system to easily extend in multiple directions by arranging the components in various configurations, while each individual component maintains structural simplicity.
Data Source
Figure 1
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AI summary
Disclosed herein is a dishwasher. The dishwasher includes a main body (10), a tub (12) provided inside the main body, a basket (51, 53) provided inside the tub to store items, an injection assembly (41, 43) configured to spray water to wash the item in the basket, and a duct (100) including a first body (110) configured to supply water to the injection assembly and provided to extend along a first direction, and a second body (120) to which water flows and provided to extend from the first body to along second direction. The duct is formed by coupling of a first housing (140) provided to form at least a portion of the first body (110) and the second body (120), and a second housing (150) provided to form another portion of the first body (110) and the second body (120).