Jalousie Window Arrangement with Sealing Sheet for Draft Reduction
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Solution Overview
Problem
Jalousie windows are inefficient due to poorly sealing louvers, leading to unwanted air movement and energy loss, which has resulted in their disallowance in new building codes due to energy inefficiency and draft issues.
Innovation Solution
A window arrangement featuring a retractable, flexible sheet member with mooring holes and a housing unit that locks into place using framing members and weatherstripping to prevent air movement, which can be made of aluminum and includes options for transparent, opaque, or air-permeable materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If jalousie windows use overlapping louvers for ventilation, then air flow is improved, but sealing performance deteriorates
Solution Approach 1:
The window is divided into multiple separate louvers that can be independently adjusted. Each louver acts as an independent sealing element, allowing the window to maintain ventilation while improving sealability by adjusting individual louver positions to close gaps effectively.
Solution Approach 2:
The louvers are designed to be dynamically adjustable rather than fixed. The crank mechanism allows users to change the angle and position of each louver in real-time, enabling the window to transition between fully open (maximum air flow) and fully closed (maximum sealing) states, resolving the contradiction between ventilation and sealing performance.
2Speed
If jalousie windows are installed for ventilation, then air movement is improved, but energy efficiency deteriorates
Solution Approach 1:
The dynamically adjustable louver system allows users to optimize the balance between air movement and energy conservation. When energy efficiency is prioritized, louvers can be positioned to minimize gaps and reduce air leakage, thereby reducing the loss of heated or cooled air while still maintaining the capability for ventilation when needed.
3Ease of manufacture
If traditional louvered windows are used, then manufacturing simplicity is improved, but draft reduction deteriorates
Solution Approach 1:
By segmenting the window into multiple adjustable louvers rather than a single fixed structure, the design maintains relative manufacturing simplicity while dramatically improving draft reduction. Each louver can be separately manufactured and positioned to eliminate drafts, combining ease of manufacture with effective draft prevention.
Solution Approach 2:
The adjustable louver structure acts as an intermediary between the indoor and outdoor environments. It provides a controllable barrier that can be fine-tuned to prevent drafts while allowing ventilation, serving as a mediator that resolves the contradiction between simple construction and draft protection.
Data Source
AI summary
A building having windows and a window arrangement to aid in the reduction of unwanted air movement in or out of windows or even doors. The window arrangement is configured to be combined with louvered or jalousie windows to minimize the flow of air from one side of the louvered or jalousie windows to the other side.