Low-Height Cleaning Diffuser for Even Lint Rinsing
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Solution Overview
Problem
Existing diffusers for cleaning fluff-laden components in household appliances, such as heat exchangers, are inefficient in terms of space usage due to their height, which affects their ability to effectively distribute rinsing liquid and remove fluff from the components.
Innovation Solution
A diffuser design with two parallel inflow channels that converge into a spatial cross-connection, creating a dynamic pressure through a constriction in the transverse space, allowing for a low overall height while maintaining effective rinsing liquid distribution and fluff removal, featuring a small-width outlet opening for efficient jet formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the diffuser uses a conventional design with internal structure for generating dynamic pressure, then the cleaning effectiveness is improved, but the overall height increases
Solution Approach 1:
The patent transitions from vertical height-based pressure generation to horizontal width-based pressure generation. The diffuser body is designed with a constricted width section that generates dynamic pressure through horizontal constriction rather than vertical stacking, allowing the same cleaning effectiveness with reduced overall height.
Solution Approach 2:
The patent changes the geometric parameters of the diffuser body, specifically reducing the height parameter while adjusting the width and length parameters. The constricted width section and extended length compensate for the reduced height, maintaining the necessary flow dynamics for effective cleaning.
2Length of stationary object
If the diffuser reduces overall height, then space utilization is improved, but the dynamic pressure generation capability may be compromised
Solution Approach 1:
The patent compensates for reduced vertical height by utilizing horizontal dimensions. The constricted width section and extended length create the necessary flow path for dynamic pressure generation, shifting the pressure generation mechanism from vertical to horizontal orientation.
Solution Approach 2:
The patent adjusts multiple geometric parameters simultaneously: reducing height while optimizing width constriction and length extension. These parameter changes work together to maintain the flow velocity and pressure dynamics necessary for effective cleaning despite the compact height.
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 diffuser achieves a favorable cleaning result by generating a dynamic pressure that promotes even distribution and high exit speed of the rinsing liquid, effectively removing fluff with a reduced overall height, suitable for components like heat exchangers in household appliances.
Implementation Method 1
with a dynamic pressure of the rinsing liquid being built up in the diffuser
Implementation Method 2
the constriction provided in this embodiment to build up the dynamic pressure of the liquid is not obtained by a spatial design that affects the overall height of the diffuser, but by a constriction in the transverse space
Data Source
Figure 1~3
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Figure 5
AI summary
The invention relates to a cleaning diffuser (2) for a fluff-laden component (1), in particular in a domestic appliance for caring for articles of laundry, the diffuser (2) being a substantial component of a rinsing arrangement by means of which rinsing fluid (5) can be fed to the component (1) in order to remove the fluff, the diffuser (2) being disposed above the component (1) and in particular being suitable for distributing the rinsing fluid (5) evenly over the blades of the component (1) in order to detach the fluff and carry it away, dynamic pressure building up in the rinsing fluid (5) in the diffuser (2). The diffuser (2) is designed such that, when the rinsing fluid (5) has entered the diffuser (2), it is divided between two feed ducts (9a, 9b) which are at a distance from one another, are substantially parallel and terminate, on the one hand, at the end of the diffuser in a pocket-like wall (10a, 10b) but which, on the other hand, relative to their entire duct length, have a narrow, three-dimensional transverse mutual connection in the form of a transverse chamber (11). At least one narrow outlet opening (14) for distributing the rinsing fluid (5) as required to the fluff-laden component (1) is provided in the direction from the three-dimensional transverse connection to the lower side of the diffuser (2).