Fire Sprinkler Trigger Assembly Protection Device
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Solution Overview
Problem
Existing protective devices for fire protection sprinkler trigger assemblies are inadequate in shielding the radially extending actuator and frangible members from damage during shipping, handling, and installation, as they cannot accommodate the unique geometry and radial extension of electrically operated linear actuators and frangible components.
Innovation Solution
A protective device with a first housing portion extending perpendicular to the sprinkler axis to house the radially extending actuator and a second housing portion extending parallel to the axis to encase the frangible member, providing a snap-fit engagement and enhanced protection by wrapping around the sprinkler frame, thereby safeguarding the trigger assembly from damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional protective cover is used for the sprinkler, then the basic trigger assembly is protected, but the radially extending linear actuator and frangible members are exposed and vulnerable to damage
Solution Approach 1:
The protective device extends in multiple dimensions with a first housing portion extending radially outward to protect the linear actuator, and a second housing portion extending axially to protect the frangible member. This multi-dimensional extension ensures all vulnerable components are encompassed within the protective housing, resolving the contradiction by adding spatial coverage without compromising component protection.
Solution Approach 2:
The protective housing is designed to be disposed about the sprinkler, with the first housing portion nested about the radially extending linear actuator and the second housing portion nested about the frangible member. This nested configuration allows the protective device to encompass multiple components at different spatial locations, providing comprehensive protection while maintaining a compact overall structure.
2Object-affected harmful factors
If the protective device accommodates the radially extending actuator, then the actuator is protected, but the device complexity increases compared to simple covers
Solution Approach 1:
The protective device is segmented into a first housing portion and a second housing portion, each designed to protect specific vulnerable components. The first housing portion protects the radially extending linear actuator, while the second housing portion protects the axially positioned frangible member. This segmentation allows each portion to be optimized for its specific protective function, reducing overall complexity compared to a single monolithic housing.
Solution Approach 2:
The protective housing serves multiple functions: it protects the linear actuator from radial damage, protects the frangible member from axial damage, and provides a unified protective structure that can be installed as a single component. This multi-functionality reduces the need for multiple separate protective elements, thereby managing device complexity while achieving comprehensive shielding.
3Reliability
If the protective device wraps around the sprinkler frame, then enhanced protection is provided, but the installation and handling difficulty increases
Solution Approach 1:
The protective device is designed with a configuration that allows it to be disposed about the sprinkler in a straightforward manner. The first housing portion can be positioned about the radially extending actuator, and the second housing portion can be positioned about the frangible member, allowing for flexible installation while maintaining robust protection during shipping and handling.
Data Source
AI summary
A protection device for a fire protection sprinkler having a first housing portion extending along a first housing axis defining a first internal housing chamber for receipt of one portion of a trigger assembly. A second housing portion of the protection device extends along a second housing axis and defines a second internal housing chamber for circumscribing a another portion of the trigger assembly. The first housing chamber is in communication with the second housing chamber.