CN116168503A

CN116168503A - Air suction type smoke detector

Info

Publication number: CN116168503A
Application number: CN202211629865.5A
Authority: CN
Inventors: 陈城巨; 王四华; 郝燚; 刘雪锋; 李夏如; 颜交
Original assignee: Zhejiang Huaxiao Technology Co ltd
Current assignee: Zhejiang Huaxiao Technology Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-05-26

Abstract

The application relates to the technical field of smoke detection, in particular to an air suction type smoke detector. The air suction type smoke detector comprises at least one air inlet unit, an air inlet duct, a filter box unit, a detection processing unit and a CO rechecking detection unit; the air inlet unit is used for sucking smoke, the air inlet air channel is used for communicating the at least one air inlet unit with the filter box unit, and the detection processing unit is used for communicating the filter box unit with the CO rechecking detection unit. The air suction type smoke detector can carry out rechecking through the CO rechecking detection unit, so that the detection precision of the air suction type smoke detector is improved.

Description

Air suction type smoke detector

Technical Field

The application relates to the technical field of smoke detection, in particular to an air suction type smoke detector.

Background

The air suction smoke-sensing fire detector is an automatic fire alarm device which can suck air in a protection area into the detector through an air sampling tube for analysis so as to early warn fire. Generally, a long-life laser light source is used as a detection light source, a light scattering technology is utilized to detect smoke particles, and false alarm prevention and smoke particle identification are realized through an auxiliary network technology.

However, the detection accuracy of the suction smoke fire detector in the prior art is low, and how to improve the detection accuracy is a problem to be solved.

Disclosure of Invention

The application provides an air-breathing smoke detector, can go on rechecking through CO rechecking detecting element to improve air-breathing smoke detector's detection precision.

To achieve the above object, the present application provides an inhalation type smoke detector comprising: the device comprises at least one air inlet unit, an air inlet duct, a filter box unit, a detection processing unit and a CO rechecking detection unit;

the air inlet unit is used for sucking smoke, the air inlet air channel is used for communicating the at least one air inlet unit with the filter box unit, and the detection processing unit is used for communicating the filter box unit with the CO rechecking detection unit.

According to the air suction type smoke detector, smoke enters through the air inlet unit and enters the filter box unit through the air inlet channel, and the filter box unit can clean smoke particles, so that large-particle impurities in the smoke can not occur, and the detection effect is improved; the smoke processed by the filter box unit enters the detection processing unit, and the detection processing unit detects the processed smoke and judges whether fire disaster occurs or not and gives an early warning; the smoke enters the CO rechecking detection unit after passing through the detection processing unit, and the CO rechecking detection unit can recheck the concentration of CO in the smoke so as to recheck the condition of fire, so that the extremely early fire detection of the field environment can be effectively and rapidly completed, the fire early warning is realized, and the detection precision can be improved.

Preferably, the air suction type smoke detector further comprises a wind speed detection unit, and the wind speed detection unit is respectively communicated with the detection processing unit and the CO rechecking detection unit.

Preferably, the wind speed detection unit comprises a wind speed detection cavity and a first sensor, the wind speed detection cavity is respectively communicated with the detection processing unit and the CO rechecking detection unit, and the first sensor is arranged in the wind speed detection cavity.

Preferably, the air inlet duct is provided with an air outlet.

Preferably, the air-suction type smoke detector further comprises a gas mixing cavity, and the gas mixing cavity is communicated with the at least one air inlet unit and the air inlet duct.

Preferably, the air inlet unit comprises an air inlet pipe and an air inlet fan, the air inlet pipe is communicated with the air mixing cavity, and the air inlet fan is arranged at one end of the air inlet pipe, which is close to the air mixing cavity.

Preferably, the air intake unit further includes a second sensor provided in the air intake pipe.

Preferably, the number of the air inlet units is two.

Preferably, the air-breathing smoke detector further comprises an exhaust unit, and the exhaust unit is communicated with the CO rechecking detection unit.

Preferably, the exhaust unit includes an exhaust pipe in communication with the CO review detection unit and an exhaust fan provided in the exhaust pipe.

Drawings

Fig. 1 is a schematic structural diagram of an inhalation type smoke detector according to an embodiment of the present application.

Icon: 10-an air intake unit; 11-an air inlet pipe; 12-an intake fan; 20-a gas mixing chamber; 30-an air inlet duct; 31-an air outlet; 40-a filter cartridge unit; 50-a detection processing unit; 60-wind speed detection unit; a 70-CO rechecking detection unit; 80-an exhaust unit.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1, an embodiment of the present application provides an inhalation type smoke detector, including: at least one air intake unit 10, an air intake duct 30, a filter box unit 40, a detection processing unit 50 and a CO review detection unit 70; wherein the air inlet unit 10 is used for sucking smoke, the air inlet duct 30 is used for communicating the at least one air inlet unit 10 with the filter cartridge unit 40, and the detection processing unit 50 communicates the filter cartridge unit 40 with the CO review detection unit 70.

In the air suction type smoke detector, smoke enters through the air inlet unit 10 and enters the filter box unit 40 through the air inlet channel, and the filter box unit 40 can clean smoke particles, so that large-particle impurities in the smoke can not occur, and the detection effect is improved; the smoke processed by the filter box unit 40 enters the detection processing unit 50, and the detection processing unit 50 detects the processed smoke and judges whether fire disaster occurs or not and gives an early warning; the smoke enters the CO rechecking detection unit 70 after passing through the detection processing unit 50, and the CO rechecking detection unit 70 can recheck the concentration of CO in the smoke so as to recheck the occurrence condition of the fire, so that the extremely early fire detection of the field environment can be effectively and rapidly completed, the fire early warning is realized, the detection precision can be improved, and the detection error of a single smoke particle detection means is avoided.

In one possible embodiment, with continued reference to fig. 1, the aspirated smoke detector further includes a wind speed detection unit 60, the wind speed detection unit 60 being disposed between the detection processing unit 50 and the CO review detection unit 70, and communicating the detection processing unit 50 with the CO review detection unit 70. The wind speed detection unit 60 can judge whether the channel from the air inlet unit 10 to the inside of the CO rechecking detection unit 70 is smooth according to the smoke circulation speed between the detection processing unit 50 and the CO rechecking detection unit 70, so as to ensure that the smoke amount entering the detection processing unit 50 and the CO rechecking detection unit 70 is sufficient, and ensure the authenticity and validity of the detection results of the detection processing unit 50 and the CO rechecking detection unit 70.

Specifically, the wind speed detecting unit 60 may include a wind speed detecting chamber and a first sensor, where the first sensor is disposed in the wind speed detecting chamber, the wind speed detecting chamber may be in communication with the detection processing unit 50 and the CO review detecting unit 70, and the first sensor may detect a speed of smoke entering the CO review detecting unit 70 through the detection processing unit 50, and determine whether the air-intake smoke detector is clogged according to the detected speed.

In the above-described embodiment, the air intake unit 10 may be, but not limited to, two, three, or four, and may be specifically adjusted as needed, which is not limited herein.

The air-breathing smoke detector further comprises a gas mixing chamber 20, the gas mixing chamber 20 being in communication with the at least one air inlet unit 10 and the air inlet duct 30. The gas mixing chamber 20 may mix the smoke entering through the gas inlet unit 10 to ensure that a sufficient amount of smoke can enter the filter cartridge unit 40, the probe treatment unit 50 and the CO review detection unit 70.

In one possible embodiment, after the smoke enters the gas mixing chamber 20 through the gas inlet unit 10, if the smoke is more and the excessive smoke is not discharged, the smoke entering the detection processing unit 50 is too much, so that the speed of the gas flow is too high, and the detection result is affected. Thus, the method is applicable to a variety of applications. The air inlet duct 30 can be provided with the air outlet 31, so that sufficient smoke can be ensured to enter the filter box assembly and the detection processing unit 50, and redundant gas can be directly discharged, so that the problem that the flow rate of the gas is too fast when a large amount of smoke enters the detection processing unit 50 is solved, and the detection precision is improved.

The air intake unit 10 may specifically include an air intake pipe 11 and an air intake fan 12, where the air intake pipe 11 may be in communication with the air mixing chamber 20, so that smoke enters the air mixing chamber 20 through an inlet of the air intake pipe 11, and the air intake fan 12 may be disposed at an outlet of the air intake pipe 11 or in the air intake pipe 11, and the arrangement of the air intake fan 12 may ensure air intake efficiency of the air intake pipe 11 corresponding to the air intake fan 12, so as to improve detection efficiency.

More specifically, the air intake unit 10 may further include a second sensor, where the second sensor may be disposed in the air intake pipe 11, and the second sensor may be configured to monitor a flow rate of inlet smoke of the air intake pipe 11, and effectively understand an air intake condition of the air intake pipe 11, so as to better understand a working condition of each air intake pipe 11, that is, the second sensor may be configured to determine an air intake effectiveness of each air intake pipe 11, and determine whether each air intake pipe 11 is blocked.

In the above embodiment, the air-breathing smoke detector further includes the air-exhausting unit 80, and the air-exhausting unit 80 can ensure the smoothness of the air in the air-breathing smoke detector, so as to avoid the problem of difficult smoke circulation between the filter box unit 40 and the CO review detection unit 70.

With continued reference to fig. 1, when the air suction type smoke detector works, the two air intake fans 12 are started, smoke is sucked into the air intake pipe 11 through the inlet of the air intake pipe 11, after being monitored by the second sensor, the smoke enters the air intake duct 30 after being mixed in the air mixing cavity 20, part of the smoke enters the filter box unit 40 through the air intake duct 30, the other part of the smoke is discharged through the air outlet 31, the filtered smoke particles enter the detection processing unit 50 for smoke particle detection, whether fire occurs or not and early warning is carried out, the air speed detection unit 60 can detect the gas blocking condition between the inlet of the air intake pipe 11 and the detection processing unit 50, the working effectiveness of the air suction type smoke detector is confirmed, the CO rechecking detection unit 70 can detect the concentration of CO in the smoke, the secondary composite fire occurs, and finally the smoke is discharged from the air discharge unit 80.

The exhaust unit 80 may include an exhaust pipe in communication with the CO review detection unit 70 and an exhaust fan disposed in the exhaust pipe.

It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. An aspirated smoke detector, comprising: the device comprises at least one air inlet unit, an air inlet duct, a filter box unit, a detection processing unit and a CO rechecking detection unit;

2. The aspirated smoke detector of claim 1, further comprising a wind speed detection unit in communication with the detection processing unit and the CO review detection unit, respectively.

3. The inhalation smoke detector according to claim 2, wherein the wind speed detection unit comprises a wind speed detection chamber and a first sensor, the wind speed detection chamber being in communication with the detection processing unit and the CO review detection unit, respectively, the first sensor being disposed within the wind speed detection chamber.

4. The aspirated smoke detector of claim 3, wherein the air inlet duct is provided with an air outlet.

5. The aspirated smoke detector of any one of claims 1 to 4, further comprising a gas mixing chamber in communication with the at least one air inlet unit and the air inlet duct.

6. The aspiration smoke detector of claim 5, wherein the air intake unit comprises an air intake pipe and an air intake fan, the air intake pipe is in communication with the gas mixing chamber, and the air intake fan is disposed at an end of the air intake pipe adjacent to the gas mixing chamber.

7. The aspirated smoke detector of claim 5, wherein the air intake unit includes a second sensor disposed in the air intake tube.

8. The aspirated smoke detector of claim 5, wherein the number of air intake units is two.

9. The aspirated smoke detector of claim 6, further comprising an exhaust unit in communication with the CO review detection unit.

10. The aspirated smoke detector of claim 9, wherein the exhaust unit includes an exhaust duct in communication with the CO review detection unit and an exhaust fan disposed in the exhaust duct.