Point type active smoke detector with or without gas production tube, and air sampling system

A smoke detector and air sampling technology, applied in instruments, alarms, fire alarms, etc., can solve the problems of strict requirements, complex design and installation of point-type active smoke detectors, etc., to reduce impact and shorten alarm monitoring The effect of convenient time and setting position

Active Publication Date: 2016-03-02
XIAN BOKANG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the actual design and installation of the above-mentioned point-type active smoke detector is complicated and demanding, the purpose of the present invention is to provide a point-type active smoke detector with or without gas sampling tube and air sampling device that is not limited by the installation position. system

Method used

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  • Point type active smoke detector with or without gas production tube, and air sampling system
  • Point type active smoke detector with or without gas production tube, and air sampling system
  • Point type active smoke detector with or without gas production tube, and air sampling system

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Experimental program
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Effect test

Embodiment 1

[0044] Such as image 3 with Figure 4 As shown, the point-type active smoke detector provided in this embodiment (taking infrared optical smoke as an example) includes a monitoring cavity 23 with a gas inlet and outlet, a sensor 24 composed of an infrared emitting tube and a receiving tube, and a main control board 25; wherein the sensor 24 is arranged in the monitoring cavity 23, and the airflow sucked into the monitoring cavity 23 from the gas inlet passes through the two beam intersection areas between the infrared emitting tube and the receiving tube on the sensor 24, and the main control board 25 is electrically connected to the sensor 24 , used to detect changes in sensor electrical parameters and make judgments and output fault or fire alarm signals.

[0045] Explanation: For the emitting tube, the two beams between the infrared emitting tube and the receiving tube are actually a cone-shaped beam of light emitted from the emitting tube as the starting point, and for t...

Embodiment 2

[0056] Such as Figure 5 with Image 6 As shown, the point-type active smoke detector provided in this embodiment (taking infrared optical smoke as an example) includes a monitoring cavity 23 with a gas inlet and outlet, a sensor 24 composed of an infrared emitting tube and a receiving tube, and a main control board 25; wherein the sensor 24 is arranged in the monitoring cavity 23, and the airflow sucked into the monitoring cavity 23 from the gas inlet passes through the two beam intersection areas between the infrared emitting tube and the receiving tube on the sensor 24, and the main control board 25 is electrically connected to the sensor 24 , used to detect changes in sensor electrical parameters and make judgments and output fault or fire alarm signals.

[0057] In this embodiment, the gas inlet and outlet are respectively located on the two opposite sides of the monitoring chamber 23. In this case, the airflow shown by the arrow in the suction monitoring chamber 23 and ...

Embodiment 3

[0063] In order to make the point-type active smoke detector provided by Embodiment 1 or 2 not only be applied to the air duct main pipe or its branch pipe, but can be used alone, such as Figure 7 As shown, the point-type active smoke detector provided in this embodiment is based on the point-type active smoke detector provided in Embodiment 1 or 2, and an air pump 27 is added at the inlet or outlet of the monitoring cavity 23, and The air pump 27 is electrically connected to the main control board 25, and the other parts are the same as those in Embodiment 1 or 2.

[0064] The point-type active smoke detector provided in this embodiment can be installed in a fire prevention area or a fire hazard area, and the external ambient gas in the area can be directly sucked into the monitoring chamber 23 through the gas inlet on the monitoring chamber 23 by using the air pump 27 The interior, then passes through the sensor 24, before exiting the gas outlet. Once the sensor 24 breaks ...

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Abstract

The invention discloses a point type active smoke detector with or without a gas production tube, and an air sampling system. The detector comprises a main control board, a monitoring chamber, a sensor composed of a photoemission photoemissive tube and a receiving tube, and an updraft ventilator, wherein the monitoring chamber is provided with a gas inlet and a gas outlet, the gas inlet in the monitoring chamber is directly opposite to the gas outlet, and an air flow passing through the monitoring chamber passes through two light beam interacting area between the photoemissive tube and the receiving tube. The point type active smoke detector, the point type active smoke detector with the gas production tube and the air sampling system, provided by the invention, can shorten the alarm monitoring time of fire detection, and the photoemissive tube and the receiving tube can be flexibly arranged; and the cost of a conventional air sampling system can be decreased.

Description

technical field [0001] The invention belongs to the technical field of fire-fighting equipment, in particular to a point-type active smoke detector with or without a gas sampling tube and an air sampling system. Background technique [0002] In the fire protection industry, the working principle of the currently commonly used point-type smoke detector is that when the smoke particles diffuse into its monitoring cavity, the infrared light emitted by the infrared light-emitting tube in the monitoring cavity is scattered, and the infrared receiving tube receives it. Infrared light, and then the main control board (or signal processing unit) outputs an alarm signal through analysis and judgment. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B17/107
CPCG08B17/103G08B17/107
Inventor 赵康柱薛战华魏辉宇莫崇典
Owner XIAN BOKANG ELECTRONICS
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