Distribution strip
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Solution Overview
Problem
Existing distributor strips in dishwashers experience significant pressure losses due to individual ceramic filters at each connection point, leading to inadequate cleaning and maintenance challenges.
Innovation Solution
A common screen cylinder filter is used for all connection points, allowing for efficient filtration and self-cleaning through backwashing, eliminating the need for adapter elements and reducing pressure losses, while optimizing space and assembly processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual ceramic filters are provided at each connection point, then clogging of channels is avoided, but pressure loss increases significantly
Solution Approach 1:
Multiple individual ceramic filters at connection points are merged into a single common filter chamber that serves all connection points. This consolidation reduces the total number of filters from multiple individual units to one shared filter system, thereby reducing cumulative pressure loss while maintaining filtration function.
Solution Approach 2:
The common filter chamber serves multiple functions: it filters washing liquor for all connection points simultaneously, provides a backwashing mechanism for self-cleaning, and eliminates the need for separate adapter elements at each connection point. This multi-functional design resolves the pressure loss issue while maintaining reliable filtration.
2Reliability
If individual filters are used at each connection point, then filtration is effective, but device complexity and assembly difficulty increase
Solution Approach 1:
The filter system is merged from multiple separate components into one integrated common filter chamber. This single chamber replaces multiple individual filters and their associated adapter elements, significantly simplifying the overall device structure and reducing assembly steps.
Solution Approach 2:
The filter function is extracted from the connection points themselves and consolidated into a separate common filter chamber. This extraction eliminates the need for individual filters at each connection point and removes the requirement for complex adapter elements, simplifying both the filter system and connection point design.
3Reliability
If individual ceramic filters are used, then filtration is provided, but maintenance effort and filter replacement frequency increase
Solution Approach 1:
The filter system incorporates a backwashing mechanism that enables self-cleaning of the filter chamber. During normal operation, washing liquor flows through the filter and then back through it in reverse, automatically removing accumulated dirt and debris. This self-service cleaning function dramatically reduces maintenance effort and extends filter service life compared to static ceramic filters.
4Ease of manufacture
If adapter elements are used for filter arrangement, then filter installation is enabled, but space consumption increases
Solution Approach 1:
The filter system is extracted from the connection points and placed in a separate common filter chamber. This extraction eliminates the need for space-consuming adapter elements at each connection point, as the filters are consolidated into one centralized location that does not interfere with connection point accessibility or require additional adapter components.
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 ensures higher washing liquor pressure for improved cleaning, extended filter life, simplified maintenance, and increased capacity for connected items, with reduced need for frequent filter changes and space-efficient design.
Implementation Method 1
The washing liquor then flows radially through the screen cylinder wall, as a result of which the washing liquor is filtered.
Implementation Method 2
the distributor pipe has a predetermined leakage, in particular at the distal end, i.e. on the distal end face or base of the distributor pipe, so that dirt particles stopped by the filter are continuously removed from the distributor pipe through the predetermined leakage during the normal rinsing process.
Data Source
Figure 1
Figure 2a~2b
AI summary
Distribution strip for arrangement on a washing liquid connection (15, 16) of a washing basket (10) of an automatic dishwashing machine, in particular an automatic cleaning and/or disinfecting machine, with a distribution pipe (2) providing a flow channel (6) and having a plurality of connection points (4) for fluidic connection of items to be cleaned to the flow channel (6), characterized by a filter common to all connection points (4), which is designed as a screen cylinder (7) and is arranged in the flow channel (6) provided by the distribution pipe (2).