Insulated Smoke Connecting Pipe With Centered Telescopic Joint
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Solution Overview
Problem
Conventional connecting pipes for smoke conduits to chimneys require large external diameters for adequate thermal insulation, leading to space inefficiency and difficult assembly due to misalignment of inner and outer tubes.
Innovation Solution
A connecting pipe design featuring an outer pipe, an inner pipe with insulating material between them, and reinforcing means, where the male end lacks insulation for easy connection and is tapered for precise fitting, along with a female end for secure assembly, reducing material usage and ensuring centering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If insulating material is arranged between inner and outer pipes to ensure thermal insulation, then thermal insulation performance is improved, but outer diameter increases and installation space requirement increases
Solution Approach 1:
The insulating material is selectively arranged only in the female end section of the connecting pipe, while the male end section remains without insulation. This local differentiation allows the pipe to achieve thermal insulation where needed (female end) while maintaining a compact outer diameter (male end), thus resolving the contradiction between insulation performance and space efficiency.
2Temperature
If insulating material is arranged between inner and outer pipes, then thermal insulation is improved, but assembly complexity increases due to misalignment of inner and outer tubes
Solution Approach 1:
The inner tube is pre-centered within the outer tube using centering elements (such as annular rings or protrusions) that are integrated into the pipe structure during manufacturing. This preliminary centering action ensures that when multiple connecting pipes are assembled, the inner and outer tubes remain properly aligned, eliminating assembly complexity while maintaining thermal insulation performance.
3Temperature
If insulating material is arranged throughout the connecting pipe, then thermal insulation is improved, but ease of connection deteriorates due to obstruction in male end section
Solution Approach 1:
The connecting pipe features a differentiated structure where the female end section contains insulating material for thermal insulation, while the male end section is left without insulation to provide an unobstructed insertion path. This local quality differentiation allows the pipe to simultaneously achieve thermal insulation and ease of connection by placing insulation only where it is functionally required.
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 design achieves effective thermal insulation with reduced space requirements, easy assembly, and cost-effectiveness by minimizing material thickness and allowing for flexible cutting to desired lengths without compromising functionality.
Implementation Method 1
an insulating means arranged between the inner pipe and the outer pipe for mechanical connection of the inner pipe to the outer pipe and thermal insulation of the inner pipe from the outer pipe
Data Source
Figure 1
Figure 2~3
AI summary
The invention relates to a connecting pipe (100) for a connecting line for conveying smoke from a fireplace into a chimney, wherein the connecting pipe (100) comprises an outer pipe (120) arranged coaxially to a longitudinal axis (LA), an inner pipe (110) for conveying the smoke arranged coaxially to the longitudinal axis (LA) in the outer pipe (120) at a distance (A) radially to the longitudinal axis (LA) from the outer pipe (120), and an insulating means (130) arranged between the inner pipe (110) and the outer pipe (120) for mechanically connecting the inner pipe (110) to the outer pipe (120) and thermally insulating the inner pipe (110) from the outer pipe (120), wherein no insulating means (130) is arranged in a male end section (101) of the connecting pipe (110) along the longitudinal axis (LA).and wherein the connecting pipe (100) comprises a female end section (102) opposite the male end section (101) along the longitudinal axis (LA) for receiving the male end section (101) of a similar connecting pipe (100) for a smoke-tight connection of the two connecting pipes (100). Between the inner pipe (110) and the outer pipe (120) and on the inner pipe (110) or on the outer pipe (120), at least one reinforcing element (140) is attached radially to the longitudinal axis (LA) for reinforcing the inner pipe (110) or the outer pipe (120), wherein the insulating element (130) is pressed together between the reinforcing element (140) and the outer pipe (120) or the inner pipe (110) for mechanically fixing the insulating material (130), inner pipe (110), and outer pipe (120).