Double-Layer Container Internal Heating for Spacer Bonding
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Solution Overview
Problem
Conventional heating methods for double-layer containers face challenges such as the need for ultrasonic devices to move into limited spaces, time-consuming segmented heating due to cylindrical design, and excessive temperature differences leading to material deterioration and inefficient heat transfer.
Innovation Solution
A double-layer container with an internal heating mechanism using electric heating elements embedded in the inner shell, which heats areas adjacent to spacers to exceed the melting point, allowing projections to form and solidify in recesses, thus forming a direct and efficient heating path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If ultrasonic vibration heating is used, then heating can be achieved, but the entire heating device must move into the storage space which is impossible when the inlet is too small or the storage space is limited
Solution Approach 1:
The heating function is extracted from a separate ultrasonic vibration device and integrated directly into the inner shell structure through embedded heating elements. This eliminates the need for external heating devices to be inserted into the storage space, solving the problem of limited inlet size and storage space.
Solution Approach 2:
The inner shell itself becomes the heating device through embedded heating elements, allowing it to heat itself directly at the spacer contact areas without requiring external heating devices. This self-heating capability eliminates the insertion problem while maintaining effective heating.
2Ease of manufacture
If conventional electric heating device is used for direct heating from inside, then heating can be applied, but the heating device must penetrate the inner shell which increases temperature difference and causes material deterioration
Solution Approach 1:
Heating elements are embedded locally in the inner shell at specific positions where spacers contact the shell, rather than requiring penetration through the entire shell. This localized heating approach achieves the required temperature at spacer contact areas without creating excessive temperature differences that would deteriorate the inner shell material.
3Ease of manufacture
If conventional heating method is used for cylindrical container, then heating can be applied, but segmented heating is required to complete the heating operation which is time-consuming
Solution Approach 1:
Multiple heating elements are distributed around the cylindrical inner shell to provide continuous heating coverage all around the circumference. This eliminates the need for segmented heating operations, allowing the entire container to be heated simultaneously and continuously without time loss.
4Strength
If inner shell is made thicker, then structural strength is improved, but the heat transfer path becomes longer which reduces heating efficiency
Solution Approach 1:
Heating elements are embedded in the inner shell during manufacturing to pre-establish direct heating paths at critical locations. This preliminary integration ensures that even with a thicker inner shell, heat can be efficiently transferred directly to the spacer contact areas without requiring excessive heating time or temperature differences.
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 convenient and efficient heating process with reduced heat transfer path, eliminating the need for internal device insertion and reducing material deterioration, while enhancing heating efficiency.
Implementation Method 1
the controller activates the electric heating elements to generate heat
Implementation Method 2
corresponding areas of the inner shell adjacent to the recesses are heated to a temperature greater than the first melting point and become melted and deformable into the recesses
Implementation Method 3
the projections cooled and solidified so as to secure to the recesses
Data Source
AI summary
A double-layer containing apparatus includes a double-layer container including an inner shell, an outer shell, and spacers. The inner shell forms a storage space. The inner shell is made of fluorine-containing thermoplastic and has a first melting point. The spacers are disposed between the inner shell and the outer shell. Each partition includes first and second surfaces. The first surface has recesses facing the inner shell. The second surface contacts the outer shell. The apparatus further comprises a heating device including a controller, wires, and electric heating elements which are correspond to the spacers respectively. A process of manufacturing the double-layer containing apparatus is also provided.