Rinsing container, method for producing a rinsing container and household dishwashing machine
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Solution Overview
Problem
Household dishwashers face challenges in reliably sealing construction-related unevenness, such as notches, between the rear wall and the flange, particularly at folded joints, which affects the tightness and durability of the washing compartment.
Innovation Solution
A washing compartment design that incorporates a U-shaped washing container casing with a folded joint, a fastening flange, and additional sealants, including a hem sealant and an auxiliary sealant, to ensure a reliable seal at the fold notch and triple point areas, using materials like hot-melt adhesive or silicone, with a larger cross-sectional area of the sealant bead to enhance tightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional seam sealant and rear wall sealant with constant quantity and thickness are used, then the sealing process is simple, but the tightness at fold notches and triple points is insufficient
Solution Approach 1:
The patent applies different sealant quantities and thicknesses at different locations: a first sealant bead with larger cross-sectional area at fold notches and triple points, and a second sealant bead with smaller cross-sectional area in intermediate regions. This local differentiation ensures reliable sealing at critical locations while avoiding excessive sealant in less critical areas.
Solution Approach 2:
The sealing system is divided into multiple segments: conventional seam sealant applied along the entire seam, conventional rear wall sealant applied at the rear wall interface, and an additional sealant specifically applied at fold notches and triple points. This segmentation allows each sealant to perform its specific sealing function optimally.
2Reliability
If additional sealant is applied at fold notches and triple points, then sealing reliability is improved, but sealant material consumption increases
Solution Approach 1:
The additional sealant is applied only at specific critical locations (fold notches and triple points) rather than uniformly along the entire seam. This localized application ensures that sealant material is consumed only where it is most needed for sealing, minimizing overall material consumption while maximizing sealing reliability at critical points.
3Reliability
If larger cross-sectional area of sealant bead is used at fold connection, then tightness is improved, but visible sealant emergence increases
Solution Approach 1:
The patent creates a localized sealant accumulation at the fold connection area by applying additional sealant specifically at this location. The larger cross-sectional area is confined to the fold notch region, and the sealant is designed to wet and seal the fold connection effectively while minimizing visible emergence in areas where appearance matters.
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 solution provides improved tightness and resource-efficient sealing at the fold notches and triple points, ensuring a watertight and durable washing compartment, even in areas with metal-to-metal connections, while minimizing visible sealant emergence.
Implementation Method 1
In particular, the additional sealant wets both the fold notch of the fastening flange—preferably also the fold sealant—and the rear wall sealant to form a seal.
Implementation Method 2
The sealant may comprise a silicone material or a pressure sensitive adhesive.
Data Source
Figure 1
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AI summary
The invention relates to a rinsing container (2) for a household dishwashing machine (1), comprising a bottom plate (7), a rear wall (9), a U-shaped rinsing container jacket (12) arranged on the bottom plate (7) and fixedly connected thereto with the aid of a folded joint (20, 21), a fastening flange (22) integrally formed on the bottom plate (7) and on the rinsing container jacket (12) for fastening the rear wall (9) to the bottom plate (7) and to the rinsing container jacket (12), the fastening flange (22) having a part (23) of the folded joint (20, 21), and a folding sealing means (24) that is provided in the folded joint (20, 21) and formed as a sealing bead (25), wherein a cross-sectional surface (A1) of the sealing bead (25) in the part (23) of the fastening flange (22), which is formed by the folded joint (20, 21), is greater than a cross-sectional surface (A2) in a central region (26) of the folded joint (20, 21).