Insulating Glass Alarm Loop Moisture Protection
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Solution Overview
Problem
Insulating glazing systems face challenges in maintaining long-term stable contact with alarm loops while preventing moisture ingress, which can lead to short circuits and deteriorate the insulating effect due to the poor sealing of connection points and gas permeability.
Innovation Solution
The use of an organic polysulphide-filled spacer with desiccants like silica gels and a polyisobutylene sheathing for the alarm loop components to enhance electrical insulation and moisture protection, combined with a prestressed pane design for improved break detection and reduced risk of short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connection points are added to the insulating glazing for the alarm loop, then the alarm functionality is enabled, but moisture can penetrate into the insulating glazing causing short circuits and false alarms
Solution Approach 1:
The alarm loop conductors are integrated into the spacer structure itself, with the alarm loop nested within the spacer body. The spacer contains a cavity or channel that houses the alarm loop conductors, protecting them from moisture while maintaining electrical connectivity. This nesting approach eliminates the need for separate connection points that would compromise the seal.
Solution Approach 2:
The spacer acts as an intermediary element that simultaneously provides structural support, moisture barrier function, and electrical conductor housing. By integrating the alarm loop connection functionality into the spacer, the system avoids creating additional penetration points through the glazing seal, thus preventing moisture ingress while enabling alarm functionality.
2Reliability
If the alarm loop is exposed in the insulating glazing, then electrical connection is achieved, but the inert gas can escape and insulating effect deteriorates
Solution Approach 1:
The alarm loop conductor pathway is merged with the spacer structure, combining the functions of structural support, gas sealing, and electrical conductor protection into a single integrated component. This eliminates the need for separate openings in the glazing assembly, preserving the thermal insulation while enabling electrical connectivity.
3Reliability
If connection points are created in the spacer for alarm loop wiring, then electrical connectivity is established, but optical transparency and overall impression are deteriorated
Solution Approach 1:
The alarm loop conductors are nested within the opaque or translucent spacer body, hiding the electrical components from view. The spacer's material properties allow it to maintain its aesthetic appearance while containing the functional elements needed for alarm functionality.
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
This solution provides a stable and effective electrical insulation with a high level of moisture protection, reducing the risk of short circuits and maintaining the insulating efficiency of the glazing system while enabling reliable alarm functionality.
Implementation Method 1
The spacer (3) contains a desiccant (4) which absorbs moisture from the inner space (9)
Implementation Method 2
The outer space (8) located between the first prestressed or partially prestressed pane (1), the spacer (3) and the second pane (2) is filled with an organic polysulphide
Implementation Method 3
a polyisobutylene sheathing for the alarm loop components to enhance electrical insulation and moisture protection
Implementation Method 4
a prestressed pane design for improved break detection and reduced risk of short circuits
Data Source
Figure 1
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AI summary
The invention relates to an insulated glazing with an alarm loop, at least comprising: a spacer (3) between a first prestressed pane (1) and a second pane (2); an outer intermediate space (8) which is filled with an organic polysulfide between the first prestressed pane (1), the spacer (3), and the second pane (2); an alarm loop (7) which is applied onto the first prestressed pane (1); a first electric contacting surface (4a) which is applied onto the first prestressed pane (1) in the outer intermediate space (8); and a second electric contacting surface (4b), wherein a. the first electric contacting surface (4a) and the second electric contacting surface (4b) are connected via the alarm loop (7); b. the first electric contacting surface (4a) is connected to a current connecting cable (6) via a first cable end piece (6a), and the second electric contacting surface (4b) is connected to said current connecting cable via a second cable end piece (6b); and c. the first electric contacting surface (4a) and the first cable end piece (6a) and the second electric contacting surface (4b) and the second cable end piece (6b) are coated with polyisobutylene (PIB) with a layer thickness of at least 1 mm.