Dishwasher Vane Assembly for Corner Coverage and Noise Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional dishwashers have dead zones where washing water cannot reach, particularly at the corners of a quadrangular washing tub, leading to incomplete dishwashing and increased noise due to direct water impact on the tub's bottom.
Innovation Solution
A dishwasher with a vane assembly that changes the trajectory of sprayed water, allowing it to reach corners of the tub by moving between positions and adjusting speed and direction, and a control method to manage this movement, including stopping, changing speed, and reversing the vane assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rotary type nozzle assembly is used to spray washing water, then the washing water can be sprayed effectively, but dead zones are created at the corners of the quadrangular washing tub where washing water cannot reach
Solution Approach 1:
The patent employs a movable vane assembly that dynamically changes position and angle to redirect washing water flow. The vane assembly moves between a first position (near the nozzle) and a second position (away from the nozzle), and can rotate to adjust the trajectory angle, thereby dynamically adapting the water spray coverage to eliminate dead zones in corner areas.
Solution Approach 2:
The vane assembly acts as an intermediary element between the nozzle assembly and the dishes. It intercepts and redirects the washing water trajectory, serving as a mediator that extends the effective coverage area of the spray system to reach corner regions that would otherwise be inaccessible.
2Reliability
If the vane assembly moves continuously to change water trajectory, then washing coverage is improved, but noise due to direct water impact on the tub bottom increases
Solution Approach 1:
The vane assembly operates with periodic motion, moving between first and second positions and rotating at specific intervals during the washing cycle. This periodic action allows the system to achieve comprehensive coverage while creating pauses where water is redirected away from the tub bottom, thereby reducing noise from continuous water impact.
Solution Approach 2:
The system preemptively redirects water flow away from the tub bottom by positioning the vane assembly appropriately before water can cause harmful impact. The controller manages the vane's movement to prevent direct water impact on the tub bottom, thereby preliminarily counteracting the potential noise issue.
3Reliability
If the vane assembly is positioned to reach corner areas, then coverage is improved, but the movement complexity and control requirements increase
Solution Approach 1:
The vane assembly is designed with dynamic movement capabilities, allowing it to transition between different positions and angles. This dynamic design enables the system to achieve complex coverage patterns through relatively simple mechanical motion (moving between two positions and rotating), managing complexity through efficient use of degrees of freedom.
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 ensures thorough washing of all areas, including corners, while reducing noise by preventing direct water impact on the tub's bottom, thereby enhancing dishwashing capability and noise reduction.
Implementation Method 1
a vane assembly that changes a trajectory of the washing water so that the sprayed washing water faces the dish
Data Source
AI summary
Disclosed is a dishwasher comprising: a tub for containing dishes; a nozzle assembly for ejecting washing water; a vane assembly for changing the path of the washing water, while moving from a first position to a second position inside the tub, such that the ejected washing water is directed towards the dishes; and a controller for stopping the vane assembly, changing the movement speed of the vane assembly, or changing the movement direction of the vane assembly while the vane assembly moves from the first position to the second position, wherein the washing water can also be ejected to corner portions of the tub.