Dishwasher Distributor Nozzles for Cleaning Dead Zones
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Solution Overview
Problem
In dishwashers, dead zones occur due to water obstruction by supply pipes, preventing thorough cleaning of objects loaded in those areas, and existing solutions either reduce loading volume or hinder user convenience.
Innovation Solution
A dishwasher design featuring a spray arm that sprays water upwards with main nozzles and a distributor with auxiliary nozzles located between the basket and spray arm, along with an intermediary element and pipe configuration to maintain water pressure, ensuring efficient cleaning of dead zones without reducing loading capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the distributor is arranged between the basket and spray arm to supply water, then water supply to spray arm is enabled, but dead zones occur where water spray is obstructed and cleaning efficiency deteriorates
Solution Approach 1:
The distributor is divided into multiple segments with nozzles positioned at different locations and angles. Each segment targets specific zones including previously inaccessible dead zones, allowing comprehensive coverage without obstructing water spray to the spray arm
Solution Approach 2:
Nozzles are positioned at specific locations on the distributor with different orientations - some facing upward toward the spray arm, others angled toward dead zones. This localized differentiation ensures each area receives appropriate water spray for effective cleaning
2Productivity
If supply pipes are arranged to avoid dead zones, then cleaning efficiency is improved, but loading volume is reduced
Solution Approach 1:
The distributor is positioned in a three-dimensional space between the basket and spray arm, utilizing vertical and radial dimensions to direct water spray. This spatial arrangement enables coverage of dead zones without requiring horizontal pipe extensions that would reduce loading volume
3Productivity
If auxiliary nozzles are added to distributor to reach dead zones, then cleaning efficiency is improved, but pressure drop increases
Solution Approach 1:
The distributor receives pressurized water from the feeder conduit before distributing it to multiple nozzles. This preliminary pressurization ensures that even with multiple auxiliary nozzles adding resistance, sufficient pressure reaches all spray points including those targeting dead zones
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
Enhances washing efficiency by effectively reaching and cleaning previously inaccessible areas, maintaining loading volume and user convenience through strategic nozzle placement and configuration.
Implementation Method 1
a spray arm (4) which enables water spray onto the objects placed inside the basket (3), at least one main nozzle (5) arranged over the spray arm (4) to provide water spread from the spray arm (4)
Implementation Method 2
at least one auxiliary nozzle (7) arranged on the surface of the distributor (6) facing the basket (3)
Implementation Method 3
a pipe (10) which joins an intermediary element (9) to an adaptor (11), enabling water transfer from the feeder conduit (8) to the spray arm (4)
Data Source
Figure 1~2
Figure 3
AI summary
The present invention relates to a dishwasher (1) comprising at least one distributor (6) that enables water transfer to the spray arm (4) and at least one auxiliary nozzle (7) positioned over the distributor (6) between the basket (3) and the main nozzles (5).