Concealed Fire Sprinkler Bottom Cover Dropping Speed
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Solution Overview
Problem
Conventional concealed fire sprinklers face challenges in quickly dropping the bottom cover from the main body due to the limited temperature sensing speed of the glass rod, which affects the rapid opening of the water passage to extinguish fires effectively.
Innovation Solution
Incorporating an elastic component, such as a V-shaped spring sheet, between the main body and the bottom cover, which increases the dropping force by providing a pushing force in addition to the weight of the bottom cover, allowing for faster release when the low-temperature melting metal melts, thus facilitating quicker opening of the sprinkling pipes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the bottom cover is fixed to the main body using low temperature melting metal (adherence), then the sprinkler maintains a concealed appearance and structural integrity, but the dropping speed of the bottom cover is insufficient when fire occurs
Solution Approach 1:
The elastic component is pre-installed between the bottom cover and main body in a compressed state, storing elastic potential energy before fire occurs. When the bonding metal melts, the pre-compressed elastic component immediately expands to provide rapid dropping force, eliminating the delay of relying solely on gravitational acceleration.
Solution Approach 2:
The elastic component transforms the static bonding structure into a dynamic release mechanism. The elastic component can be compressed during assembly and then rapidly expands when triggered, converting stored elastic energy into kinetic energy for fast bottom cover ejection, making the system response dynamic rather than purely passive gravitational drop.
2Strength
If the adhering force of the bottom cover to the main body is increased to maintain structural integrity, then the concealed appearance is maintained better, but the speed to drop the bottom cover when fire occurs is reduced
Solution Approach 1:
The elastic component is pre-compressed during assembly to store elastic potential energy. When the bonding metal melts, this pre-stored energy is immediately released to overcome the bonding force and accelerate the bottom cover dropping, allowing stronger bonding without sacrificing dropping speed.
Solution Approach 2:
The system transitions from a continuous bonding state to a rapid release state. The elastic component maintains compression during the bonding phase, then rapidly expands when triggered, creating a distinct periodic action pattern: compression during installation, sudden expansion during fire response, and return to compressed state after reset.
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 elastic component enhances the dropping force and speed of the bottom cover, ensuring rapid activation of the water valve to spray water and extinguish fires more effectively, while also simplifying assembly with its V-shaped structure.
Implementation Method 1
When fire generates high temperature air to melt the low temperature melting metal, the bottom cover drops from the main body
Implementation Method 2
an elastic component received in the receiving slot, two ends of the elastic component being respectively contacted with the arm and the bottom cover
Data Source
AI summary
A concealed fire sprinkler includes a main body, an arm extending along the main body and a receiving slot formed on the arm. A bottom cover is fixed by the arm at bottom of the main body. An elastic component is received in the receiving slot. Two ends of the elastic component contact with the arm and the bottom cover. Accordingly, the conventional problems that the temperature sensing speed of concealed fire sprinklers is not capable of increasing rapidly can be solved.