Composite Housing Frame Profile for Thermal Insulation and Rigidity
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Solution Overview
Problem
Existing temperature control devices with housing frames made of plastic lack sufficient insulating properties and stability, making them less effective compared to metal frames, and are costly to produce.
Innovation Solution
Incorporating pairs of metal elements as reinforcement strips bonded to a plastic base profile, with a cross-sectional axis of symmetry where the isotherm between the inside and outside temperatures intersects orthogonally, enhancing flexural rigidity and thermal insulation while maintaining a simple structure and low production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a housing frame is made entirely of metal to improve stability and strength, then the flexural rigidity and structural stability are enhanced, but the thermal conductivity increases and insulating properties deteriorate
Solution Approach 1:
The housing frame uses a composite structure combining plastic base profiles with metal reinforcement strips. The plastic material provides thermal insulation while the metal strips embedded within provide structural strength and flexural rigidity, achieving both requirements simultaneously without the drawbacks of pure metal or pure plastic construction
2Strength
If metal reinforcement strips are added to a plastic base profile to improve stability, then the flexural strength increases by a factor of 2 or more, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The reinforcement structure is segmented into discrete metal strips positioned at specific locations within the plastic profile rather than using continuous metal reinforcement throughout. This segmentation allows the metal strips to be embedded during the extrusion process at critical stress points, providing maximum strength enhancement while maintaining manufacturing simplicity and avoiding complex multi-step assembly processes
3Use of energy by moving object
If the isotherm intersects the metal elements to improve thermal conductivity in certain areas, then heat transfer efficiency increases, but the overall insulating properties of the housing frame deteriorate
Solution Approach 1:
The metal reinforcement strips are strategically positioned within the plastic profile such that the isotherm for temperature (T1-T2)/2 intersects the axis of symmetry orthogonally and does not intersect the metal elements. This local arrangement ensures that metal reinforcement is provided where structural strength is needed while thermal insulation is maintained where heat transfer should be minimized, creating different functional qualities in different parts of the same component
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 significantly improves the stability and insulating properties of the housing frame, allowing it to perform comparable to metal frames while using less material, resulting in enhanced flexural strength and sound insulation.
Implementation Method 1
at least one pair of metal elements arranged in pairs parallel to one another, which are designed as reinforcement strips and are materially bonded to a base profile made of plastic over their entire contact surface
Implementation Method 2
the isotherm for the temperature (T1 - T2)/2 at the intersection with the axis of symmetry is orthogonal to the latter and the isotherm for the temperature (T1 - T2)/2 has no intersection with the metal elements
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The present invention relates to a housing frame (2) of a temperature-control apparatus (1, 64), wherein a temperature T1 prevails outside the temperature-control apparatus (1, 64) and a temperature T2 prevails within the temperature-control apparatus (1, 64), wherein at least one of the edges of the housing frame is formed by a frame profile (5; 68) which comprises a base profile (13) composed of plastic and at least one pair of metal elements (14, 15; 34; 36 to 39) which are arranged in pairs parallel to one another and which are in the form of reinforcing strips and, over their entire abutment area on the base profile (13), are cohesively connected to said base profile, wherein the cross section of the frame profile has an axis (62) of symmetry, the isotherm for the temperature (T1 - T2)/2 at the point of intersection with the axis (62) of symmetry is arranged on said axis of symmetry orthogonally, and the isotherm for the temperature (T1 - T2)/2 does not exhibit a point of intersection with the metal elements (14, 15; 34; 36 to 39); and/or at least one of the posts (10, 69) of the housing frame (2) is formed by a post profile (70) which comprises a base profile (73) composed of plastic and at least one pair of metal elements (78, 79, 82, 83) which are arranged in pairs parallel to one another and which are in the form of reinforcing strips and, over their entire abutment area on the base profile (73), are cohesively connected to said base profile, wherein the cross section of the frame profile has an axis (62) of symmetry, the isotherm for the temperature (T1-T2)/2 at the point of intersection with the axis (62) of symmetry is arranged on said axis of symmetry orthogonally, and the isotherm for the temperature (T1-T2)/2 does not exhibit a point of intersection with the metal elements (78, 79, 82, 83).