Sealant Dam in Projection Windows for Flow Control
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Solution Overview
Problem
Current dead stop type projection windows face issues with sealant degradation, dirt attraction, color change, and maintenance requirements, as well as messy and time-consuming sealant application, leading to potential sealing failures.
Innovation Solution
A free-standing frame with a sealant dam extending from the stop to engage the insert window, controlling sealant flow and preventing it from reaching the exterior, thus creating a reliable seal and reducing installation complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sealant is applied to dead stops and insert windows are pushed into the sealant, then the insert windows are sealed to the frame against wind and water infiltration, but the sealant attracts dirt, changes color, suffers degradation, and requires maintenance when exposed to the environment
Solution Approach 1:
A foam gasket is introduced as an intermediary component between the sealant and the exterior environment. The foam gasket extends beyond the dead stop to provide a first line of defense, protecting the sealant from direct environmental exposure such as UV radiation, rain, and temperature fluctuations. This mediator allows the sealant to remain protected while still achieving the sealing function.
Solution Approach 2:
The foam gasket is pre-installed on the dead stop before the sealant is applied. This preliminary action creates a protective barrier in advance, preventing the sealant from being directly exposed to harmful environmental factors. The foam gasket is positioned to extend beyond the dead stop, ensuring that when sealant is applied over it, the sealant is shielded from the exterior environment.
2Reliability
If sealant is applied to dead stops and insert windows are installed, then the windows are sealed, but the sealant application is messy and takes a lot of time to clean and manipulate
Solution Approach 1:
The foam gasket serves as a mediator that contains the sealant application process. By applying sealant over the foam gasket rather than directly to the dead stop, the foam gasket absorbs excess sealant and prevents it from squeezing out onto the exterior. This eliminates the messy cleanup process and reduces the time required for installation.
Solution Approach 2:
The foam gasket performs a self-service function by automatically containing the sealant during installation. As the insert window is pushed into place, the foam gasket compresses and prevents sealant from escaping to the exterior, eliminating the need for manual intervention to control sealant flow or perform cleanup operations.
3Reliability
If sealant is applied thoroughly and correctly, then sealing issues are prevented, but installers require extensive training and oversight to control against sealant failures
Solution Approach 1:
The foam gasket acts as a foolproof intermediary that guides the sealant application process. Installers simply apply sealant over the foam gasket, and the foam gasket's physical structure ensures proper sealant placement and containment. This eliminates the need for installers to understand complex application techniques or receive extensive training, as the foam gasket does the work of ensuring proper sealing.
Solution Approach 2:
The foam gasket provides self-guiding functionality during installation. Its shape and position automatically direct the sealant to the correct location and prevent improper application. This self-service mechanism ensures consistent sealing quality regardless of installer skill level, eliminating the need for oversight or quality control checks.
4Reliability
If sealant is applied after installation of insert windows, then sealing can be completed, but additional time and steps are required in the installation process
Solution Approach 1:
The foam gasket is pre-installed on the dead stop before the insert window is placed. This preliminary preparation creates a ready-to-seal configuration that allows sealant to be applied in a single step during window installation. The foam gasket's pre-positioned shape and location enable sealant to be applied efficiently without requiring separate post-installation sealing steps.
Data Source
AI summary
A dead stop type projection window assembly includes a free-standing frame and at least one insert window. The free-standing frame includes a top member, a base member spaced below the top member, at least two mullions vertically extending between the top member and the base member and spaced apart to form an insert window opening therebetween, and a stop extending along a perimeter of the insert window opening. The insert window is secured to the free-standing frame at the insert window opening and is sealed at the stop with sealant to close the insert window opening. The free-standing frame also includes a sealant dam extending from the stop and engaging the insert window to resist flow of the sealant toward the window frame opening between the stop and the insert window.