Dishwasher Linear Spray Vane Structure for Full Tub Coverage
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Solution Overview
Problem
Dish washing machines with rotating nozzle systems often leave areas uncovered due to the limited radius of water injection, while linear type injection structures require a higher vane to maintain water stream alignment, reducing internal volume and loading capacity.
Innovation Solution
A dish washing machine with a linear type injection unit featuring a first and second vane that move in parallel, a flow channel switching device, and a motor assembly to adjust the direction of water injection, allowing for efficient water distribution across a larger area without increasing vane height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a rotating nozzle is used to inject washing water, then the injection structure is simple, but the washing coverage is limited to the radius of rotation leaving areas uncovered
Solution Approach 1:
The injection system is segmented into multiple fixed nozzles arranged in a specific pattern, each responsible for covering a particular zone. This segmentation allows comprehensive coverage of the entire washing area without requiring a rotating mechanism, thus maintaining structural simplicity while eliminating uncovered areas.
Solution Approach 2:
The patent transitions from a single-point rotating injection to a multi-point distributed injection system. By arranging multiple nozzles in different spatial positions and orientations, the system achieves three-dimensional coverage of the washing area, ensuring all surfaces are accessible without mechanical rotation.
2Area of stationary object
If a linear type injection structure with a single vane is used to cover all areas, then the washing coverage is improved, but the vane height must be increased reducing internal volume and loading capacity
Solution Approach 1:
The washing coverage is achieved through multiple fixed nozzles positioned at different locations and angles, eliminating the need for a single tall vane. Each nozzle covers a specific zone, and collectively they provide comprehensive coverage while maintaining a compact overall structure that preserves internal volume.
Solution Approach 2:
Instead of using a single vane that must be tall enough to cover the entire area, the system uses multiple nozzles that collectively provide excessive coverage. This distributed approach achieves complete coverage with shorter individual components, preserving internal volume and loading capacity.
3Productivity
If the vane height is increased to maintain water stream alignment in linear injection, then washing efficiency is improved, but the loading volume for dishware is reduced
Solution Approach 1:
The water injection function is segmented across multiple fixed nozzles positioned to directly target different areas where dishes are placed. This eliminates the need for a tall moving vane, maintaining washing efficiency through direct targeted injection while preserving loading volume for dishware.
Solution Approach 2:
Instead of moving a single vane to redirect water streams, the patent inverts the approach by having multiple fixed nozzles directly positioned to inject water where needed. This eliminates the height requirement while maintaining washing efficiency through direct injection geometry.
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
The solution enhances washing efficiency by ensuring all areas of the washing tub are covered, increasing the loading volume for various dishware sizes and types without compromising the machine's compact size.
Implementation Method 1
a motor assembly to adjust the direction of water injection
Implementation Method 2
a pump and nozzle for injecting the washing water into the washing tub
Data Source
AI summary
A dish washing machine having a structure improved to increase washing efficiency is provided. The dish washing machine includes a washing tub for washing dishes, an injection unit to inject washing water into the washing tub, and a deflection unit to move inside the washing tub to deflect the washing water injected from the injection unit toward the dishes. The deflection unit includes a first vane to be linearly movable in a direction in which the washing water is injected and a second vane to interwork with the first vane.