Dishwasher Washing Whirl Nozzle Layout for Higher Cleaning Efficiency
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Solution Overview
Problem
Traditional whirl washing units in dishwashers face inefficiencies in cleaning, excessive water and energy consumption, and complex construction, which affects their aesthetic integration and usability in industrial settings.
Innovation Solution
A washing unit with two parallel rows of washing nozzles and a separate rinsing nozzle row, each with dedicated feeding ducts, arranged in the same plane to enhance mechanical and emollient action, reducing vertical dimensions and manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional washing whirls with two arms are used, then the device complexity is low, but the washing efficiency is insufficient
Solution Approach 1:
The washing whirl is segmented into multiple independent arms (at least three arms instead of two), with each arm equipped with its own dispensing nozzles. This segmentation allows the washing liquid to be distributed across multiple zones simultaneously, increasing washing efficiency without requiring a complete redesign of the whirl structure.
Solution Approach 2:
Different arms of the whirl are equipped with dispensing nozzles at specific locations optimized for their respective zones. The nozzles are positioned to create overlapping washing zones, ensuring that each area of the kitchenware receives adequate washing attention. This local optimization of nozzle placement enhances overall washing efficiency.
2Productivity
If cross shaped whirls with four arms are used, then the washing efficiency increases, but the construction complexity increases proportionally
Solution Approach 1:
The whirl is divided into multiple arms (at least three) with dispensing nozzles on each arm, creating segmented washing zones. This segmentation provides comprehensive coverage without requiring a complex cross-shaped configuration, achieving efficient washing with simpler construction.
Solution Approach 2:
Multiple arms are merged into a single rotating whirl structure, allowing them to work simultaneously during one rotation. This combining of multiple washing functions into one unified rotating assembly achieves high washing efficiency without the complexity of separate washing mechanisms.
3Productivity
If traditional single-row nozzle arrangements are used, then the device complexity is low, but the washing efficiency by mechanical action is insufficient
Solution Approach 1:
The nozzle arrangement is segmented into multiple rows (at least two rows) with nozzles positioned at different radial distances from the whirl axis. This segmentation creates multiple washing zones that simultaneously treat different areas of the kitchenware, significantly enhancing washing efficiency by mechanical action.
Solution Approach 2:
The nozzle arrangement transitions from a single-row configuration to a multi-row configuration with nozzles positioned at different radial distances. This dimensional change in the nozzle layout creates overlapping washing zones and enhances the mechanical action of washing without significantly increasing device complexity.
4Productivity
If high amounts of hot water are used for washing, then the washing efficiency increases, but the energy consumption and water consumption increase
Solution Approach 1:
The washing liquid is distributed across multiple arms and rows of nozzles, creating segmented washing zones. This segmentation allows for more efficient use of washing liquid, reducing the total amount of hot water needed while maintaining high washing efficiency through the combined mechanical action of multiple nozzle streams.
Solution Approach 2:
The multiple arms and rows of nozzles ensure continuous washing action across all zones during each rotation of the whirl. This continuous and simultaneous washing action throughout multiple zones reduces the need for excessive hot water to achieve thorough cleaning, as each zone receives adequate washing attention during every rotation.
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
This configuration increases washing efficiency, reduces water and energy consumption, and simplifies construction while maintaining a compact design, effectively addressing the inefficiencies and complexity of traditional systems.
Implementation Method 1
the spraying zone of washing liquid that impinges the kitchenware and consequently the washing efficiency by mechanical action increase
Implementation Method 2
the emollient action of the washing liquid (detergent mixed with water) is amplified
Data Source
Figure 1
Figure 2
AI summary
A washing unit (10) of the type provided with at least one washing whirl (11) comprising at least two series of nozzles (5, 5') for dispensing washing liquid and at least one series of rinsing nozzles (7). The two series of nozzles (5, 5') are arranged according to a first and a second row, lying on the same plane and parallel. The unit further exhibits a separate washing feeding duct (3, 4) for each row of washing nozzles (5, 5').