Dew-condensation preventing square duct
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Solution Overview
Problem
The existing methods for preventing dew condensation on air conditioner ducts require labor-intensive and time-consuming heat insulation processes, leading to material waste and increased costs, as well as complex scheduling and safety concerns due to the separation of duct installation and insulation companies.
Innovation Solution
A dew-condensation preventing square duct design featuring an external and internal quadrilateral barrel shape with a predetermined heat insulating layer between them, where the internal duct is held in place by axial-direction holding portions and joint structures, eliminating the need for external insulation materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heat insulating material is wound around the duct to prevent dew condensation, then dew condensation is prevented, but the installation process becomes labor-intensive and time-consuming
Solution Approach 1:
The invention merges the duct structure with the heat insulation function by providing an internal square duct inside the external square duct, creating an integrated heat insulating layer between them. This eliminates the need for separate heat insulating materials and combines two previously separate tasks (duct installation and insulation application) into one unified structure, thereby improving installation efficiency while maintaining dew condensation prevention
Solution Approach 2:
The heat insulating layer is pre-formed as part of the duct structure itself, with the internal square duct already positioned within the external square duct during manufacturing. This preliminary configuration eliminates the need for on-site insulation application, reducing installation labor and time while ensuring consistent insulation quality
2Reliability
If heat insulating material is used around the duct, then dew condensation is prevented, but material waste is produced requiring disposal
Solution Approach 1:
The duct structure is merged with the heat insulation function through the integrated internal and external square ducts with the heat insulating layer between them. This eliminates the need for separate, disposable heat insulating materials, thereby preventing material waste and disposal issues while maintaining effective dew condensation prevention
3Reliability
If duct installation and heat insulation are conducted by different companies, then specialized work is performed, but scheduling becomes complicated and coordination is difficult
Solution Approach 1:
The invention merges the functions of duct installation and heat insulation application into a single integrated product and process. By providing the heat insulating layer as an inherent part of the duct structure, the need for separate companies and coordinated scheduling is eliminated, simplifying project management while maintaining work quality
Solution Approach 2:
The duct structure provides its own heat insulation function through the integrated internal and external square ducts with the heat insulating layer between them. This self-contained design eliminates the need for external insulation application services, reducing coordination complexity between different companies
4Productivity
If a large number of workers are deployed for duct installation and insulation, then work can be completed, but costs increase and safety deteriorates
Solution Approach 1:
The invention merges duct installation and heat insulation into a single integrated process that can be completed by fewer workers. The pre-formed heat insulating layer between the internal and external square ducts eliminates the need for separate insulation application work, reducing labor requirements, costs, and associated safety risks
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 effectively prevents dew condensation without the need for external insulation, simplifying installation, reducing labor and waste, and enhancing safety by maintaining a consistent heat insulating layer and reducing the number of workers required.
Implementation Method 1
a heat insulating layer between the external square duct and the internal square duct
Data Source
AI summary
To provide a dew-condensation preventing square duct which is capable preventing dew condensation on the duct without winding a heat insulating material around the duct.A dew-condensation preventing square duct includes: an external square duct formed by four plate-shaped external wall portions and having a substantially quadrilateral barrel shape; an internal square duct formed by four plate-shaped internal wall portions and having a substantially quadrilateral barrel shape, the internal square duct being arranged inside of the external square duct; and a holding protrusion which holds the internal square duct inside of the external square duct such that a heat insulating layer S between the external square duct and the internal square duct has a predetermined thickness T.