Air-breathing smoke detecting air chamber structure and method

A smoke detection and air-breathing technology, which is applied in the structural details of gas analyzers, measuring devices, and analysis of gas mixtures, etc., can solve the problems of reducing detection response time and sensitivity, aggravating the accumulation of dust in the detection chamber, and frequent replacement of filters. , to improve response time and sensitivity, reduce dust accumulation, and prolong replacement cycle

Active Publication Date: 2019-08-02
山东山科安全科技有限公司
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Problems solved by technology

[0003] The inventor found that the first method allows all the measured gas to flow through the detection chamber, which is easy to aggravate the accumulation of dust in the detection chamber
If a filter device is installed at the air inlet, the filter needs to be replaced frequently, increasing maintenance costs
The second method is because the air inlet and outlet of the detection chamber are in the front section of the suction fan, the air pressure difference between the inlet and the outlet is relatively small, and the air flow flowing through the detection chamber is relatively small, which will reduce the response time and sensitivity of the detection

Method used

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  • Air-breathing smoke detecting air chamber structure and method
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[0023] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0024] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof;

[0025] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present i...

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Abstract

The present invention discloses an air-breathing smoke detecting air chamber structure and method. The structure comprises a main body. An air inlet passage, an air outlet passage, an air taking branch, an air outlet branch, an air-breathing fan and a detecting dark chamber are arranged in the main body. One end of the air inlet passage is communicated with an air inlet arranged on a side wall ofthe main body, and the other end is communicated with an air-breathing port of the air-breathing fan. One end of the air outlet passage is communicated with an air outlet arranged on the main body, and the other end is communicated with an exhaust port of the air-breathing fan. One end of the air taking branch is communicated with the air outlet passage, and the other end is communicated with an inlet of the detecting dark chamber. An outlet of the detecting dark chamber is communicated with one end of the air outlet branch, and the other end of the air outlet branch is connected with the airinlet passage. The pressure of the exhaust port of the air-breathing fan is greater than the pressure of the air-breathing port.

Description

technical field [0001] The invention belongs to the technical field of fire smoke detection, and in particular relates to a structure and method of an aspirating smoke detection gas chamber. Background technique [0002] The suction methods of traditional aspirating smoke detection products are mainly divided into two types, one is to inhale all the measured gas into the detection chamber for detection; the other is to set a branch from the air inlet to let a part of the measured gas enter The detection chamber is then discharged from the air inlet near the suction fan, and the air inlet and outlet of the detection chamber are all in the front section of the suction fan. [0003] The inventor found that the first method allows all the gas to be measured to flow through the detection chamber, which tends to aggravate the accumulation of dust in the detection chamber. If a filter device is installed at the air inlet, the filter needs to be replaced frequently, increasing main...

Claims

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Application Information

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IPC IPC(8): G01N33/00
CPCG01N33/0009G01N33/0016
Inventor 赵志鹏刘建翔李绍鹏刘欣薛莹李杨殷艳华许兆霞
Owner 山东山科安全科技有限公司
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