Heated Kitchen Vessel Base Bonding for Dishwasher-Safe Sealing
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Solution Overview
Problem
Existing kitchen vessels with electrically heated bases face challenges in dishwasher suitability due to insecure connections that can be easily separated, requiring mechanical aids and compromising sealing integrity.
Innovation Solution
A silicone-based, cross-linking adhesive connects the plug-in projection and secondary base without mechanical aids, ensuring a watertight and dishwasher-safe connection by forming a prestress-free, elastic seal that compensates for temperature and load changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If mechanical aids such as screws or snap-in connections are used to connect the plug-in projection and secondary base, then the connection strength is improved, but the device complexity increases and installation space increases
Solution Approach 1:
The patent replaces mechanical connection systems (screws, snap-in connections) with a chemical bonding system using adhesive. The adhesive forms a permanent bond between the plug-in projection and secondary base, eliminating the need for mechanical fasteners while maintaining connection strength and reducing structural complexity
Solution Approach 2:
The patent combines the connection function and sealing function into a single integrated solution. The adhesive serves dual purposes: providing mechanical bonding between components and creating a watertight seal, thereby eliminating the need for separate sealing rings or gaskets
2Strength
If mechanical aids such as screws or snap-in connections are used to connect the plug-in projection and secondary base, then the connection strength is improved, but the installation space increases
Solution Approach 1:
The adhesive bonding system requires minimal space compared to mechanical fasteners. The adhesive is applied in a thin layer between the bonding surfaces, eliminating the need for screw holes, clamps, or other space-consuming mechanical connection elements
Solution Approach 2:
By integrating the sealing function into the adhesive bond itself, the patent eliminates the need for separate sealing components that would occupy additional space. The adhesive creates both the structural connection and the watertight seal in a single integrated layer
3Reliability
If prestressed seals such as sealing rings are used to ensure watertightness, then the sealing reliability is improved, but the device complexity increases and the seals deteriorate over time
Solution Approach 1:
The patent replaces mechanical prestressed sealing systems (sealing rings under compression) with a chemical bonding system. The adhesive creates a permanent elastic seal that maintains its sealing properties without requiring continuous prestress, eliminating the components and mechanisms needed for prestressed sealing
Solution Approach 2:
The adhesive's elastic properties allow it to accommodate dimensional changes and pressure variations that occur during operation and dishwasher cycles. This elasticity provides sustained sealing reliability without the need for prestress, as the adhesive naturally adapts to changing conditions
4Ease of repair
If the plug-in projection and secondary base are connected with easily separable connections, then the ease of repair is improved, but the reliability deteriorates due to insecure connections
Solution Approach 1:
The adhesive connection is designed to be permanent and non-reusable. Once the plug-in projection and secondary base are bonded, they cannot be separated without destruction. This approach prioritizes connection reliability over reusability, accepting that the connection is single-use but highly reliable
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 a secure, non-destructive, and watertight connection that maintains sealing properties over time, reducing installation space and eliminating the need for prestressed seals, which can deteriorate.
Implementation Method 1
A two-component silicone is also preferably used as the adhesive/sealant. In this regard, for example, it can also be a condensation-crosslinking two-component silicone adhesive. This advantageously achieves an elastic seal between the plug-in projection and the secondary base, which advantageously means that changes in length and pressure that occur due to load changes due to temperature fluctuations both during operation and during a dishwasher cycle can be compensated for.
Implementation Method 2
The selected sealing using a cross-linking adhesive creates a dishwasher-safe kitchen container with an electrically contactable heating base, with the adhesive compound forming the connection between the plug-in projection and the time base also producing the required watertightness.
Data Source
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AI summary
The invention relates to a kitchen vessel (7) with a heated base (12) which is electrically heated, with the heated base (12) comprising a resistance heating element (10) with which electrical contact is made by means of plug-in projections (16, 17) which are arranged on the lower face of the heated base (12), with one plug-in projection (16, 17) being held on a second base (13) which is arranged on the lower face of the resistance heating element (10). In order to further improve a kitchen vessel of the type under discussion in terms of making it dishwasher-safe, as is desirable, it is proposed that the plug-in projection (16, 17) is adhesively bonded to the second base (13) by means of a crosslinking adhesive with a connection which can only be broken by destroying said connection.