Aspirating Point Detector with Multi-Stream Inlet for Rapid Fire Detection
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Solution Overview
Problem
Existing fire alarm systems face challenges with large and cumbersome detectors that require extensive installation networks, limiting their placement in certain environments, and suffer from delayed detection times due to distance and logistical or aesthetic constraints.
Innovation Solution
A point detector equipped with a fan for air aspiration and multiple independent sensing streams for smoke, heat, and carbon monoxide detection, allowing for simultaneous and rapid identification of fire-related substances and conditions, with an early-warning smoke detector for enhanced sensitivity and reduced energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a network of pipes and holes is installed to transport air to a remote detecting device, then high-sensitivity detection is achieved, but installation complexity and time increase
Solution Approach 1:
The device segments the air intake function by providing multiple separate inlet ports (first inlet, second inlet, third inlet) that can be independently connected to different zones. This allows the detection system to be installed locally without requiring extensive piping networks, as each inlet can be separately routed to nearby areas.
Solution Approach 2:
The detecting device integrates multiple detection functions into a single unit: smoke detection, heat detection, and carbon monoxide detection. This multi-functional design eliminates the need for separate detecting devices for each parameter, reducing installation complexity while maintaining high detection sensitivity across multiple hazards.
2Ease of operation
If the detecting device is placed far from the monitored environment, then installation is easier, but detection time increases
Solution Approach 1:
The device incorporates a fan that actively aspirates air from the monitored environment through the inlet ports before detection is needed. This preliminary air sampling action ensures that air samples are continuously drawn and analyzed, reducing detection time while allowing the device to be installed at a reasonable distance from the monitored zones.
Solution Approach 2:
The device uses pneumatic principles by incorporating a fan to create airflow that draws air samples through the inlet ports and across the sensing elements. This active air aspiration system enables rapid detection by continuously circulating air samples, compensating for any distance between the device and monitored areas.
3Measurement precision
If multiple sensing devices are used for simultaneous detection, then detection accuracy improves, but device complexity increases
Solution Approach 1:
The device merges multiple sensing functions (smoke sensor, heat sensor, carbon monoxide sensor) into a single integrated detecting device. The housing contains all sensing elements and processing circuitry in one unit, achieving high detection accuracy across multiple parameters while minimizing device complexity through unified design.
Solution Approach 2:
The detecting device is designed as a multi-functional universal detector that simultaneously monitors smoke, heat, and carbon monoxide levels. This single device replaces what would otherwise require multiple separate detectors, improving detection accuracy across different hazard types while reducing overall system complexity.
4Ease of operation
If a single enclosure houses all components, then ease of placement improves, but detection sensitivity decreases
Solution Approach 1:
The device applies local quality by providing separate inlet ports for different air sampling zones, allowing each inlet to be optimally positioned and routed to capture air from specific areas. This enables the single enclosure device to maintain high detection sensitivity by drawing air samples from multiple localized sources without requiring the device itself to be large or complex.
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
Enables high-sensitivity fire detection with rapid response times, reduced installation impact, and minimized energy usage, effectively alerting users during the incipient phase of a fire, thereby reducing damage and injury.
Implementation Method 1
a fan configured to aspirate air from a surrounding environment; an inlet in flow communication with the fan
Implementation Method 2
a smoke detector for sensing smoke in a first stream of the multiple streams
Implementation Method 3
a heat detector for sensing heat in a second stream of the multiple streams
Implementation Method 4
a carbon monoxide detector for sensing carbon monoxide in a third stream of the multiple streams
Data Source
Figure 1~2
AI summary
A point detector (1) for a fire alarm system is described. The point detector (1) comprises a fan (2) configured to aspirate air from a surrounding environment; and an inlet (3) in flow communication with the fan (2); wherein the inlet (3) is configured to split the incoming flow into multiple streams (4); and wherein each stream (4) of the multiple streams (4) is configured to be in flow communication with a respective sensing device (6).