Dishwasher Door Guide Structure for Drying Air Deflection
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Solution Overview
Problem
Household dishwashers often experience reduced drying performance due to gaps between the inner door and washing baskets, which limit the contact of drying fluid with items to be washed, resulting in incomplete moisture absorption.
Innovation Solution
The implementation of a guide structure on the inner door, comprising multiple guide elements that protrude from a flat surface, redirects the drying fluid flow from the door's interior edge gap towards the washing baskets, ensuring better contact and absorption of moisture during the drying cycle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a free space or edge gap is present between the inner door and washing baskets, then the door structure is simple and easy to manufacture, but the drying fluid flow has limited contact with items to be washed, reducing drying performance
Solution Approach 1:
The guide structure acts as an intermediary element between the drying fluid flow and the items to be washed. It redirects the flow that would otherwise pass through the edge gap, ensuring the drying fluid contacts the items effectively while maintaining the simple door structure with edge gap
Solution Approach 2:
The guide structure modifies the local flow characteristics in the edge gap region without changing the overall door structure. By creating localized flow redirection at specific points along the door, it improves drying performance in the gap area while maintaining manufacturing simplicity
2Device complexity
If the drying fluid flows along the inside of the door in the vertical direction, then the flow path is simple, but the drying fluid has limited contact with items to be washed, resulting in incomplete moisture absorption
Solution Approach 1:
The guide structure segments the vertical drying fluid flow into multiple redirected streams. By dividing the continuous vertical flow into several redirected paths through the guide elements, the drying fluid makes multiple contacts with items at different locations, improving moisture absorption effectiveness
Solution Approach 2:
The guide structure introduces a horizontal dimension to the primarily vertical drying fluid flow. By redirecting the flow horizontally towards the items to be washed, it creates a two-dimensional flow pattern that enhances contact between the drying fluid and items, improving drying reliability
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 solution enhances the drying performance by directing the drying fluid flow in a targeted manner onto the items, improving the drying efficiency and effectiveness within the dishwasher.
Implementation Method 1
at least one guide structure in the form of a plurality or a large number of individual guide elements is raised on the inside of the door... such that, in the drying mode of the dishwasher, a drying fluid flowing along the inside of the door is directed to a washing basket accommodated in the interior of the washing compartment or onto items to be washed arranged thereon
Implementation Method 2
air is subjected to a flow as the drying fluid so that it flows around the washware, absorbing moisture and transferring it to another location
Data Source
Figure 1
Figure 2
Figure 3A~4
AI summary
The invention relates to a dishwasher (1), in particular a domestic dishwasher, having a washing compartment (2), at least one washing basket (4a, 4b) which is disposed in the washing compartment and serves to receive items for washing (30), and a door (3) for closing the washing compartment (2). In the closed position of the door (2) at least one guide structure (9*), in particular in the form of a plurality of individual guide elements (9), projects from a planar surface (8), which forms the inner face of the door (5) as a whole or a part thereof, into the interior of the washing compartment (2) and is disposed in such a way that in the drying mode of the dishwasher (2) a drying fluid (11) flowing along on the inner face (5) of the door is guided onto items for washing (30) disposed in the washing compartment (2).