An indoor fire alarm sensor device

Abstract

The invention relates to the technical field of fire fighting equipment, in particular to an indoor fire alarm sensing device, comprising: a mounting plate, a detection box, a main control room, and an air duct; The device is installed in the bolt hole of the roof of the house, the detection box is located between the installation plate and the main control room, and the detection box is a tubular object; the invention uses the air duct to surround the annular groove to cover the air outlet, and uses the elastic seal to block the dust Entering the inside of the air duct, it can effectively prevent dust from entering the detection room, causing false alarms, improving the sensitivity and real-time performance of smoke detection, and also using the downward movement of the push rod to make the air duct fall, and the suction fan can be restarted, which can The air duct sucks the smoke at a lower height into the detection room, improves the sensing speed of the smoke detection, and makes the alarm in advance. At the same time, the suction fan only works when detection is required, which effectively saves resources.

Description

technical field [0001] The invention relates to the technical field of fire fighting equipment, in particular to an indoor fire alarm sensing device. Background technique [0002] The fire detector is the equipment used in the automatic fire alarm system to detect the scene and find the fire. The fire detector is the "sensory organ" of the system, and its function is to monitor whether there is a fire in the environment. Once there is a fire, the characteristic physical quantities of the fire, such as temperature, smoke, gas and radiant light intensity, are converted into electrical signals, and immediately act to send an alarm signal to the fire alarm controller. [0003] Among them, the smoke alarm is usually installed on the ceiling of the house. When a fire breaks out, the smoke diffuses into the smoke alarm on the ceiling and sends a signal after detecting the smoke. However, due to the poor air circulation of the house, when a fire breaks out in the house It takes a ...

AI Technical Summary

Problems solved by technology

Since this kind of detector relies on the convection of the air to diffuse the smoke particles into the monitoring chamber, it takes a certain amount of time for the smoke to diffuse into the monitoring chamber from the initial stage of the fire, so it is impossible to monitor and alarm the fire in time; Dust will enter the monitoring chamber under normal monitoring conditions, which greatly affects the sensitivity and real-time performance of the detector.

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