Segmented Fire Spraying Head with Triggered Nozzles
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Solution Overview
Problem
Conventional fire extinguishing systems either waste large volumes of extinguishing medium or direct it inadequately, especially in early stages of fires, and pose risks to electronic devices or high-hygiene areas, while existing systems either lack precision in extinguishing small fires or are cumbersome in design.
Innovation Solution
A combined sprinkler and open spraying head system where one nozzle is always open for initial, controlled misting and another nozzle with a triggering mechanism activates for increased flow when heat is detected, allowing for staged and targeted extinguishing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If open spraying heads are used to spray extinguishing medium immediately upon system activation, then a large volume of extinguishing medium can be directed at the fire site, but extinguishing medium is wasted on areas not requiring protection and large volumes are harmful to electronic devices or high-hygiene areas
Solution Approach 1:
The spraying head is segmented into multiple nozzles with different functions: always-open nozzles for immediate response and triggered nozzles for targeted application. This segmentation allows the system to spray extinguishing medium in a controlled manner, directing it only where needed rather than across the entire protected area, thus preventing waste and harm to sensitive areas.
Solution Approach 2:
Different nozzles within the same spraying head have different operational characteristics - some are always open while others are triggered by heat. This creates local quality differences in the extinguishing medium application, ensuring that sensitive areas receive minimal or no spray while fire zones receive adequate suppression.
2Measurement precision
If closed sprinkler heads are used to direct extinguishing medium exclusively at the fire site, then precision in fire targeting is improved, but the fire must become quite large before activation occurs requiring great local volume of water
Solution Approach 1:
The always-open nozzles provide preliminary action by immediately spraying extinguishing medium upon system activation, before the fire has grown large enough to trigger the heat-activated nozzles. This early intervention uses minimal water to address incipient fires, preventing the need for large volumes later while maintaining precision through targeted nozzle placement.
3Productivity
If separate open spraying heads and separate sprinkler heads are used in mixed systems, then both early stage and large fire control capabilities are achieved, but the arrangement is awkward from the viewpoint of installation due to different spraying head types
Solution Approach 1:
The patent merges the functions of separate open spraying heads and closed sprinkler heads into a single integrated spraying head. This unified design incorporates both always-open nozzles and triggered nozzles in one unit, eliminating the need for separate head types and simplifying installation while maintaining the ability to handle both early-stage and developed fires.
Solution Approach 2:
The integrated spraying head is designed with multi-functionality, serving both as an immediate-response open nozzle and as a heat-activated sprinkler. This universal design allows a single component to perform multiple functions that previously required separate devices, reducing installation complexity while maintaining comprehensive fire control capability.
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 enables minimal initial water usage, precise fire control, and efficient extinguishing with reduced risk to electronics or hygiene-sensitive areas, combining the benefits of both sprinkler and open nozzle systems in a compact, modifiable unit.
Implementation Method 1
the sprinkler is not activated until the fire has become quite large... The sprinkler part (1) is provided with a triggering means (5)... when the triggering means (5) has activated and opened a passage to the spray nozzles (4)
Data Source
AI summary
A spraying head, especially a spraying head intended for fire extinguishing, which comprises a frame part, an inlet for extinguishing medium and at least two nozzles. At least one first nozzle (9) is arranged in a spraying head part (2), for which first nozzle (9) the medium passage from the inlet of the spraying head is always open and that at least one second nozzle (4) is arranged in a sprinkler part (1) which comprises a triggering means (5), whereby the passage of medium from the inlet to at least one second nozzle (4) is closed when the triggering means (5) is non-activated, and that the passage of medium for at least one second nozzle (4) is open when the triggering means (5) is activated. The invention also relates to a method.