Glazing Unit Heatable Coating Pressure Balance
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Solution Overview
Problem
Physically adjustable elements within glazing units, such as slats and roller blinds, often bind with glazing sheets due to pressure imbalances, leading to sticking issues and potential replacement of the glazing unit.
Innovation Solution
A glazing unit design featuring a heatable coating to increase the cavity gas pressure, reducing pressure imbalances and preventing binding, along with sensors to monitor conditions and adjust the physically adjustable element and heatable coating accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a physically adjustable element is installed within a glazing unit cavity, then the amount of light and heat transmitted by the glazing unit can be adjusted, but the element may bind upon the glazing sheets due to pressure imbalance
Solution Approach 1:
The patent changes the pressure parameter of the gas within the cavity by heating it, thereby adjusting the physical state of the gas to eliminate pressure imbalance. This resolves the binding issue by equalizing internal and external pressures, allowing the physically adjustable element to operate smoothly without binding on the glazing sheets.
Solution Approach 2:
The system employs periodic heating of the gas within the cavity to maintain pressure balance. By cyclically adjusting the gas temperature and pressure in response to sensor feedback, the system prevents binding conditions from developing, ensuring continuous reliable operation of the adjustable element.
2Loss of energy
If the cavity gas pressure is reduced below atmospheric pressure during winter, then the glazing unit maintains thermal insulation, but the pressure difference causes sheets to deflect into the cavity causing binding
Solution Approach 1:
The patent dynamically adjusts the temperature parameter of the cavity gas to maintain appropriate pressure levels. During winter conditions, the system heats the gas to prevent excessive pressure reduction, thereby preventing sheet deflection and binding while still maintaining effective thermal insulation through the sealed cavity.
Solution Approach 2:
The system uses sensors to monitor pressure or position conditions and provides feedback to the heating system. This feedback mechanism allows the cavity pressure to be actively regulated, compensating for temperature-induced pressure changes and preventing the conditions that lead to binding.
3Strength
If wind loading is applied to the glazing unit, then the unit must maintain structural integrity, but the loading may cause sheets to deflect and bind with the adjustable element
Solution Approach 1:
The patent adjusts the gas pressure parameter within the cavity to counteract the effects of wind loading. By increasing internal pressure through heating, the system creates an opposing force that prevents external pressure from deflecting the sheets into binding positions, thereby maintaining both structural integrity and operational ease.
4Reliability
If the physically adjustable element is of significantly reduced size compared to the cavity width, then binding is reduced, but the choices available to the glazing unit assembler are reduced
Solution Approach 1:
The patent changes the pressure parameter of the cavity gas to prevent binding, rather than constraining the size of the adjustable element. This approach allows assemblers to select from a full range of physically adjustable element sizes and types without being forced to use oversized elements that would require excessive cavity space, thereby maintaining both reliability and design flexibility.
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 solution effectively reduces the incidence of binding, allowing for smoother operation of physically adjustable elements and extending the lifespan of the glazing unit by preventing costly replacements.
Implementation Method 1
the presence of a heatable coating suitable for heating the gas within the cavity allows for the temperature of the cavity gas to be increased
Implementation Method 2
The increase in temperature is associated with an increase in pressure, reducing the imbalance between the internal and external pressures
Data Source
AI summary
A glazing unit includes a physically adjustable element wherein the glazing unit is adapted for reducing binding of the physically adjustable element, the glazing unit including one or more sensors and a heatable coating. Also provided is a process for manufacturing such a glazing unit, a system comprising such a glazing unit, and the use of such a glazing unit or such a system in a building.