Vacuum heat insulating container
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Solution Overview
Problem
Vacuum heat insulating containers face issues with thermal expansion, where the central axis of the inner tube deviates from the outer tube when heated, leading to potential damage at the bonding part due to uneven expansion.
Innovation Solution
Incorporating a load receiving part with protruding elements on both the inner and outer tubes, aligned vertically with the central axis of the outer tube, to support the inner tube's thermal expansion equally in both vertical directions, preventing axis deviation and distributing the load to prevent bonding part damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the inner tube is heated to high temperature, then the heating function is improved, but the central axis of the inner tube deviates from the central axis of the outer tube due to thermal expansion
Solution Approach 1:
The support function is segmented from the bonding part by introducing a separate load receiving part. The bonding part is divided into an upper bonding part and a lower bonding part, with the load receiving part positioned between them. This segmentation allows the bonding parts to focus on connection while the load receiving part handles thermal expansion forces, preventing axis deviation.
Solution Approach 2:
The load receiving part acts as an intermediary between the inner tube and outer tube. It receives the load of the inner tube and transmits it to the outer tube, while also serving as a buffer to absorb thermal expansion forces. This intermediary structure prevents direct transmission of expansion forces to the bonding part, maintaining central axis alignment.
2Temperature
If the inner tube is heated, then the heating function is improved, but the bonding part is damaged due to concentrated distortion
Solution Approach 1:
The bonding part is segmented into upper and lower portions with the load receiving part positioned between them. This segmentation distributes the thermal stress away from the bonding interfaces, preventing concentrated distortion and damage at the bonding part during repeated heating cycles.
Solution Approach 2:
The load receiving part provides beforehand cushioning by absorbing and distributing thermal expansion forces before they can reach the bonding part. This protective structure prevents distortion from concentrating at the bonding interface, ensuring bonding part durability under repeated high-temperature use.
3Temperature
If the inner tube is thermally expanded, then the heating capacity is improved, but the distance between the inner tube and outer tube becomes short only in the vertically upper part
Solution Approach 1:
The load receiving part serves as an intermediary that distributes the thermal expansion forces uniformly in the vertical direction. By receiving the load at its position and transmitting it to the outer tube, it ensures uniform gap distribution between the inner and outer tubes, preventing concentration of expansion in the upper part only.
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 design maintains the central axis alignment of the inner tube with the outer tube during thermal expansion, preventing distortion and damage to the bonding part, even under repeated high-temperature use.
Implementation Method 1
a depressurized sealed space being formed between the outer tube and the inner tube, in which the vacuum heat insulating container further includes a load receiving part configured to cause the outer tube to support the inner tube
Implementation Method 2
when heating is performed in the heating space 513, the inner tube 503 is heated and is thermally expanded in the radial direction (arrow A51) and the axial direction (arrow B51)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A vacuum heat insulating container 1 includes an outer tube 2 having a bottom and an inner tube 3 having a bottom and an inner tube 3 having a bottom, the outer tube 2 and the inner tube 3 being arranged in such a way that the central axes thereof being a horizontal direction, an opening end of the outer tube 2 and an opening end of the inner tube 3 being bonded to each other, and a depressurized sealed space 8 being formed between the outer tube 2 and the inner tube 3, in which the vacuum heat insulating container further includes a load receiving part 7 for causing the outer tube 2 to support the inner tube 3, and the location of the load receiving part 7 in a vertical direction coincides with the location of the central axis of the outer tube 2.