Composite Window Frame with Insulated Metal Pipe
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Solution Overview
Problem
Current aluminum alloy and plastic-steel windows in China lack effective sealing, strength, heat insulation, and sound insulation, leading to energy waste and reduced durability due to inadequate connection methods between frame components.
Innovation Solution
A composite window design featuring a central metal pipe filled with insulation material, surrounded by non-metal and metal alloy profiles with self-locking connections and a laminated glass configuration, enhancing structural integrity and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If riveting, corner brace combination, or screw connection is used to connect hollow metal components, then the connection is achieved, but sealing, strength, heat insulation, and sound insulation performances are not effectively ensured
Solution Approach 1:
The patent employs a composite structure combining metal pipe (for strength) with non-metal profiles (for sealing and insulation). The metal pipe provides structural integrity while the non-metal profiles filled with insulation material provide sealing and thermal/sound insulation, resolving the contradiction between connection strength and insulation performance.
Solution Approach 2:
The non-metal profiles are nested around the metal pipe, with the insulation material filling the cavity between them. This nested configuration allows the inner metal structure to provide strength while the outer non-metal layers provide sealing and insulation functions simultaneously.
2Ease of manufacture
If hot melting plastic profiles are used to weld corners together, then plastic profile connection is achieved, but reinforced steel liners are not connected, greatly reducing overall strength
Solution Approach 1:
The patent merges the advantages of hot melting connection (ease of manufacture) with mechanical connection methods. The reinforced steel liners are connected through the metal pipe structure using methods that ensure both strength and ease of assembly, while the plastic profiles are hot melted to seal the corners, achieving both strong connection and manufacturing efficiency.
3Strength
If hollow aluminum alloy profiles with wall thickness ≥1.4mm are used, then structural strength is provided, but heat conduction between indoors and outdoors occurs, increasing energy waste
Solution Approach 1:
The patent uses a composite structure with an inner metal pipe (for strength) and outer non-metal profiles filled with insulation material (for thermal insulation). This configuration maintains the strength benefits of metal while eliminating the heat conduction problem through the insulation layer.
Solution Approach 2:
The insulation material filled in the cavity between the metal pipe and non-metal profiles acts as an intermediary that blocks heat conduction. This intermediate layer prevents direct thermal transfer between the indoor and outdoor environments while allowing the metal structure to maintain its strength.
4Ease of manufacture
If three-cavity or multi-cavity PVC plastic profiles with wall thickness ≥2.2mm and 1.5mm steel liner are used, then basic structure is achieved, but corners are not strongly connected, leading to poor anti-wind pressure and anti-warping performance
Solution Approach 1:
The patent combines metal pipe (for strength) with non-metal profiles (for manufacturing ease). The metal pipe structure provides superior anti-wind pressure and anti-warping performance, while the non-metal profiles can be easily assembled using hot melting or other connection methods.
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 composite window achieves superior energy-saving, sound insulation, anti-wind pressure, and extended service life by improving sealing, strength, and thermal performance while maintaining simplicity and convenience in construction.
Implementation Method 1
an inner cavity filled with a filling material
Data Source
AI summary
An energy-saving security composite window comprising a peripheral side frame and glass installed on the side frame, in which the side frame is of composite structure. A rectangular high strength metal pipe is located centrally to serve as a main body of the side frame and a cavity of the rectangular high-strength metal pipe is filled with a filling material. A plurality of non-metal profiles are respectively fixed on an outer surface of the rectangular high-strength metal pipe, and an installation groove for installing glass is formed between the rectangular high strength metal pipe and the non-metal profile. An external profile is a metal alloy material, a wooden material, a plastic material, or a glass material fixed on an outer surface of the non-metal profile. The performances of external windows of buildings, such as heat insulation, heat preservation, energy saving, sound insulation, and wind pressure resistance, is improved.