Dry Pendent Sprinkler Assembly for Freeze-Resistant Outdoor Coverage
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Solution Overview
Problem
Existing fire protection systems for outdoor areas, particularly those exposed to freezing temperatures, face challenges in effectively dispersing fire suppression fluids while preventing the system from freezing.
Innovation Solution
A dry pendent sprinkler assembly is used, with a body portion protruding from an exterior wall at an angle of at least 55 degrees to cover an outdoor area of at least 10 feet, featuring a feed line on the opposite side of the wall to supply fire protection fluid, and a sealing assembly to prevent freezing, ensuring effective fire protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wet sprinkler system is used in outdoor areas, then fire suppression effectiveness is improved, but the system is susceptible to freezing in cold temperatures
Solution Approach 1:
The patent extracts the water supply function from the outdoor sprinkler assembly by placing the feed line and water supply connection on the interior side of the exterior wall, while the sprinkler head operates on the exterior side. This separation allows the sprinkler to function without containing water in its body, eliminating freezing susceptibility while maintaining fire suppression capability.
Solution Approach 2:
The patent applies different quality requirements to different parts of the system: the sprinkler head portion is designed for exterior exposure with freeze-resistant construction, while the body portion and feed line connections are positioned on the interior side where freezing is not a concern. This localized quality differentiation resolves the contradiction between outdoor functionality and freezing protection.
2Area of stationary object
If the sprinkler head protrudes far from the wall to cover wide areas, then coverage area is improved, but structural stability and sealing effectiveness deteriorate
Solution Approach 1:
The patent resolves the contradiction by changing the dimensional relationship between the sprinkler head and wall through angular projection. The sprinkler head protrudes at an angle of 45-90 degrees from the wall surface, allowing it to reach distant areas for wide coverage while maintaining a compact footprint at the wall interface, thereby preserving sealing effectiveness and structural stability.
Solution Approach 2:
The patent employs an adjustable angular positioning mechanism that allows the sprinkler head to be oriented at different angles (45-90 degrees) relative to the wall. This dynamic adjustability enables optimization of coverage area while maintaining adequate structural support and sealing contact with the wall mounting surface.
3Ease of manufacture
If the feed line is positioned on the exterior side of the wall, then installation simplicity is improved, but freezing protection and system reliability deteriorate
Solution Approach 1:
The patent extracts the feed line and water supply connection from the exterior environment and positions them on the interior side of the exterior wall. This separation removes the vulnerable components from freezing conditions while the sprinkler head maintains its exterior positioning for effective fire coverage, resolving the contradiction between installation simplicity and freezing protection.
Data Source
AI summary
At least one aspect is directed to a fire protection sprinkler system to provide fire protection for an outdoor area. The fire protection system can include a dry pendent sprinkler assembly. The dry pendent sprinkler assembly can include a body portion, a sprinkler head portion, or a deflector portion. The body portion can secure the dry pendent sprinkler assembly with a feed line. The feed line can be disposed on an opposite side of an exterior wall relative to the sprinkler head portion. The feed line can include a fire protection fluid. The body portion can protrude from the exterior wall at an angle of at least 55 degrees relative to a lateral exterior projection that protrudes into the outdoor area from the exterior wall. The dry pendent sprinkler assembly can expel the fire protection fluid to cover the outdoor area.