Segmented Protective Cap for Fire Sprinkler Tool Access
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Solution Overview
Problem
Existing protective devices for fire protection sprinklers are complex and cumbersome, making handling, installation, and storage difficult, and they do not provide adequate protection for operational components during storage, transport, and installation.
Innovation Solution
A protected sprinkler assembly with a tubular protective cap that engages a support cup, featuring internal baffles and slots to define a tool path for easy tool access and alignment, minimizing interference with installation tools and providing protection against accidental damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective cap is used to protect operational components during storage and transport, then protection is provided, but the device becomes complex and cumbersome
Solution Approach 1:
The protective cap is divided into a tubular member and a separate end cap that can be assembled together. The tubular member fits over the sprinkler body while the end cap seals the opening, creating a segmented protective system that is easier to manufacture and install than a fully integrated complex cap design.
Solution Approach 2:
The protective cap is designed to nest within the support cup structure. The tubular member fits inside the support cup, and the end cap fits within the tubular member, creating a nested arrangement that provides protection while maintaining a compact profile and reducing overall complexity.
2Reliability
If the protective cap remains in place during installation, then protection is maintained, but tool access becomes difficult
Solution Approach 1:
The protective cap transitions from a static protective barrier to a dynamic system where the end cap can be selectively removed. This allows the cap to remain in place during storage and transport for protection, while enabling easy tool access during installation by simply removing the end cap portion.
Solution Approach 2:
The end cap is designed as a separate removable component that can be taken out from the tubular member. This extraction of the sealing portion allows tools to access the sprinkler through the opening created by removing the end cap, while the tubular member remains in place to continue protecting the operational components.
3Ease of operation
If the protective cap is removed to allow tool access, then installation becomes easier, but operational components become exposed and vulnerable
Solution Approach 1:
Only the end cap portion is removed from the tubular member, not the entire protective cap. This selective extraction provides tool access through the opening while the tubular member remains in place to continue protecting the operational components from damage during installation.
Solution Approach 2:
The protective system dynamically adapts during installation by transitioning from a fully enclosed protective state to a partially open state. The end cap removal creates an access pathway while the tubular member maintains protection, allowing the system to provide both protection and tool access as needed.
4Reliability
If existing protective caps with multiple walls and openings are used, then protection is provided, but alignment and tool navigation become complex
Solution Approach 1:
The protective cap is segmented into simple components (tubular member and end cap) rather than using a complex multi-wall structure. This segmentation reduces the number of alignment requirements and simplifies the overall device while maintaining protection through the basic tubular enclosure.
Data Source
AI summary
Installation and protective devices for fire protection sprinkler assembly having a support cup is disposed about the sprinkler assembly. A protective cap engages the support cup to define an internal volume to enclose the sprinkler therein and protect operational components of the sprinkler during storage, transport, installation and when awaiting to be placed into service. The protective cap defines a tool path with slots of the protective cap in fluid communication with the internal volume. The protective cap and tools are configured to cooperate with one another to permit the tool to adjustably navigate within the internal volume to access the protected sprinkler for installation or adjustment of the sprinkler frame and/or for removing the protective cap.