Louvre Window Segmented Blades for Thermal Insulation
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Solution Overview
Problem
Louvre windows have poor insulation performance due to the division of windowpanes, which is not effectively addressed by existing solutions like double-glazed units, as the insulative properties of the airgap are often compromised by uncertain seals between units.
Innovation Solution
A louvre window design featuring a frame with a drive bar and pivot drive connector system that moves blades between open and closed positions, allowing for alignment of windowpanes to form barriers against airflow in the closed position and creating an uninterrupted channel for airflow in the open position, utilizing offset windowpanes and sliding members to enhance insulation and airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If double-glazed units are used in louvre windows, then insulation performance is improved, but the insulative properties are compromised by uncertain seals between units
Solution Approach 1:
The window is divided into multiple individual blades, each containing its own double-glazed unit with sealed edges. This segmentation isolates each insulating unit, eliminating the need for seals between units and preventing thermal bridging at connection points.
Solution Approach 2:
Each blade contains a double-glazed unit nested within it, with the first and second windowpanes forming concentric layers. The sealed edges of each double-glazed unit are contained within the blade structure, creating nested insulating chambers that maintain thermal isolation.
2Productivity
If windowpanes are divided into multiple units, then airflow control is improved, but insulation performance deteriorates due to poor seals between units
Solution Approach 1:
The window is segmented into multiple independent blades that can be individually positioned. Each blade contains its own sealed double-glazed unit, allowing airflow control through blade positioning without compromising the insulating integrity of each unit.
Solution Approach 2:
The blades are designed to be movable and adjustable, allowing dynamic control of airflow by changing blade positions. The drive bar mechanism enables all blades to be simultaneously positioned to optimize either airflow or insulation based on environmental conditions.
3Temperature
If blades are designed with offset windowpanes, then insulation is improved by creating airgaps, but device complexity increases
Solution Approach 1:
Each blade is segmented into multiple windowpanes (first and second windowpanes) positioned at offsets from each other. This segmentation creates insulating airgaps within each blade while keeping the overall structure modular and manageable.
Solution Approach 2:
The offset windowpanes are nested within each blade structure, with the first windowpane and second windowpane forming concentric layers. This nesting creates insulating airgaps without requiring external support structures, simplifying the overall system while maintaining insulation performance.
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 improves insulation by creating an insulating airgap in the closed position and allows for substantial airflow in the open position, reducing friction and collision risks, while maintaining a compact footprint and enhancing privacy with tinted or frosted windows.
Implementation Method 1
The first and second windowpanes are offset in a first direction by a first amount... creating an insulating airgap in the closed position
Implementation Method 2
in the closed position the first windowpanes are aligned to form a barrier against airflow and the second windowpanes are aligned to form a barrier against airflow
Data Source
AI summary
A louvre window having: a frame, the frame having a head, a sill and at least two jambs; a drive bar located in one or both of the jambs that is movable by a handle; a plurality of blades located within the frame and connected to the drive bar by a pivot drive connector, such that movement of the drive bar urges the blades to pivot, each blade having: a first windowpane attached to the blade; and a second windowpane attached to the blade, wherein operation of the handle causes movement of the blades between an open position and a closed position, wherein in the open position the first windowpanes are aligned to form a barrier against airflow and the second windowpanes are aligned to form a barrier against airflow and in the closed position the first windowpanes are pivoted out of alignment to allow airflow and the second windowpanes are pivoted out of alignment to allow airflow.