Dishwasher Vane Assembly for Edge Spray Coverage
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Solution Overview
Problem
Conventional dishwashers create blind spots where washing water does not reach the edges of rectangular washing tubs, leading to incomplete washing and increased washing time and energy consumption.
Innovation Solution
A dishwasher with a vane assembly that moves between two positions within the tub, changing the path of the washing water to ensure it reaches the edges, and a controller that detects the vane's position and movement time to optimize its movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If rotation type nozzle assemblies are disposed at upper and lower sides of upper dish basket and at upper side of lower dish basket, then the nozzle assemblies can be rotated by reaction force of high pressure washing water, but blind spots are formed where sprayed washing water does not reach edges of rectangular washing tub
Solution Approach 1:
The patent employs a movable vane assembly that reciprocates between two positions to dynamically redirect washing water flow. This dynamic adjustment allows the washing water to reach edge areas of the tub that would otherwise be blind spots, while maintaining the automatic rotation capability of the nozzle assemblies through reaction force.
Solution Approach 2:
The vane assembly acts as an intermediary element between the nozzle assemblies and the dishes at the tub edges. By positioning and redirecting the washing water flow, the vane mediates the delivery of washing water to areas that are not directly reachable by the rotating nozzles alone.
2Reliability
If vane assembly moves between first position adjacent to nozzle assembly and second position at other end of vane guide, then washing water can be directed toward all areas including edges of tub, but device complexity increases due to position detection and movement control systems
Solution Approach 1:
The vane assembly is designed to move automatically based on the flow of washing water itself. The water flow provides the driving force for the vane's reciprocating motion, eliminating the need for external motors or complex actuation systems. This self-service approach reduces device complexity while maintaining effective washing coverage.
Solution Approach 2:
The patent incorporates a position detection sensor that detects the vane assembly's position and provides feedback to the controller. This feedback mechanism enables the controller to determine when the vane has reached the desired position and to control the reciprocating motion appropriately, ensuring complete washing coverage while managing system complexity through intelligent control.
3Use of energy by moving object
If controller detects movement time of vane assembly and stops movement when movement time equals or exceeds reference time, then energy consumption is reduced, but washing coverage may be insufficient if vane stops too early
Solution Approach 1:
The vane assembly performs periodic reciprocating motion between two positions during the washing cycle. By controlling the duration and rhythm of these periodic movements, the system ensures that all areas of the tub receive adequate washing water coverage while avoiding unnecessary continuous operation that would increase energy consumption.
Solution Approach 2:
The controller uses movement time detection as a feedback parameter to control the vane assembly's operation. When the detected movement time reaches or exceeds the reference time, the controller stops the vane's movement, optimizing energy consumption while ensuring sufficient washing coverage has been achieved through the monitored movement duration.
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 allows for efficient washing of all areas within the tub, reducing washing time and energy consumption by ensuring thorough coverage of the tub's edges with the washing water.
Implementation Method 1
a vane assembly that is moved between a first position and a second position of an inside of the tub and changes a progression path of the washing water so that the sprayed washing water can be directed toward the dishes
Implementation Method 2
The position identification member may include a permanent magnet that generates a magnetic field, and the position detection sensor may include a hall sensor that senses the magnetic field
Implementation Method 3
a pump that generates a washing water pressure
Implementation Method 4
Such rotation type spraying units are rotated by reaction in which washing water with a high pressure is sprayed
Data Source
AI summary
A dishwasher includes a tub that accommodates dishes; a nozzle assembly that sprays washing water; a vane assembly that is moved between a first position and a second position of an inside of the tub and changes a progression path of the washing water so that the sprayed washing water can be directed toward the dishes; and a controller that moves the vane assembly to the second position if the vane assembly is disposed at the first position. When a linear washing portion washes a small quantity of dishes by spraying washing water while making a reciprocal motion in part of an inside of a washing chamber, a washing time can be reduced, and concentrated washing can also be performed.