CN112802296B - Indoor fire alarm sensing device - Google Patents
Indoor fire alarm sensing device Download PDFInfo
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- CN112802296B CN112802296B CN202110372593.4A CN202110372593A CN112802296B CN 112802296 B CN112802296 B CN 112802296B CN 202110372593 A CN202110372593 A CN 202110372593A CN 112802296 B CN112802296 B CN 112802296B
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- main control
- detection
- push rod
- suction fan
- air outlet
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B17/00—Methods preventing fouling
- B08B17/02—Preventing deposition of fouling or of dust
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
Abstract
The invention relates to the technical field of fire fighting equipment, in particular to an indoor fire alarm sensing device, which comprises: the device comprises a mounting plate, a detection box, a main control chamber and an air pipe; the detection device comprises a mounting plate, a detection box, a main control room and a control box, wherein the mounting plate is disc-shaped, bolt holes for mounting the whole device on a house ceiling are formed in the mounting plate, the detection box is positioned between the mounting plate and the main control room, and the detection box is a tubular object; the invention utilizes the air pipe to surround along the annular groove, shields the air outlet, and utilizes the elastic sealing strip to shield dust from entering the air pipe, thereby effectively preventing the dust from entering the detection chamber to cause false alarm, improving the sensitivity and real-time performance of smoke detection, and utilizing the downward operation of the push rod to ensure that the suction fan is restarted after the air pipe falls down, thereby ensuring that the air pipe sucks smoke with lower height into the detection chamber, improving the induction speed of smoke detection, leading the alarm to be advanced, simultaneously ensuring that the suction fan works only when the detection is needed, and effectively saving resources.
Description
Technical Field
The invention relates to the technical field of fire fighting equipment, in particular to an indoor fire alarm sensing device.
Background
The fire detector is a device for detecting the scene and finding out the fire in the fire-fighting automatic fire alarm system. Fire detectors are the "sense organs" of the system and function to monitor the environment for the presence or absence of a fire. Once there is fire, the characteristic physical quantity of fire, such as temperature, smoke, gas and radiation intensity, etc. are converted into electric signals, and act immediately to send alarm signals to the fire alarm controller.
Wherein smoke alarm installs on the ceiling of house usually, when the conflagration breaing out, send signal after smog diffusion gets into the smoke alarm on the ceiling detects smog, but because the air circulation nature of house is relatively poor, when the conflagration breaing out in the house, smog will only can diffuse smoke alarm's position through longer time, has reduced smoke alarm's reliability to a certain extent, can't sense smog at the very first time. Meanwhile, after the smoke alarm is installed on the ceiling of a house, due to the fact that the room space is not consistent in height, smoke rushing upwards from a fire source on the ground of the house cannot reach the position where the detection induction seat is located very quickly, the induction effect is poor, the detection induction time is too long, and therefore the reasonable smoke alarm should be structurally improved to improve the induction speed and enable the alarm to be advanced.
The smoke alarm usually adopts a point-type smoke detector, and the working principle of the point-type smoke detector is that when smoke particles are diffused into a monitoring cavity of the smoke detector, infrared rays emitted by an infrared light emitting tube in the monitoring cavity are scattered, an infrared receiving tube receives the infrared rays, and then a main control board (or called a signal processing unit) outputs an alarm signal through analysis and judgment. Because the smoke dust particles are diffused into the monitoring cavity by the aid of convection of air, smoke generated in the initial stage of a fire disaster can be diffused into the monitoring cavity within a certain time, and the fire disaster cannot be monitored and alarmed in time; in addition, dust can enter the monitoring cavity under the normal monitoring condition of the detector, so that the sensitivity and the real-time performance of the detector are greatly influenced.
Disclosure of Invention
Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide an indoor fire alarm sensing device, which prevents dust from entering the inside of a detection chamber through an air duct surrounding along an annular groove, thereby causing false alarm, and improving the sensitivity and real-time performance of smoke detection, and which uses the air duct to suck smoke of a relatively low height into the detection chamber, thereby not only improving the sensing speed, but also advancing the alarm. The invention achieves the above purpose through the following technical scheme.
An indoor fire alarm sensing device comprises a mounting plate, a detection box, a main control chamber and an air pipe; the mounting plate is disc-shaped, and a bolt hole is formed in the top of the mounting plate; the detection box is positioned between the mounting plate and the main control room; the detection box is a tubular object, an annular groove with a semicircular section is formed in the periphery of the outer wall of the detection box, the annular groove is coaxial with the detection box, an air outlet is formed in the outer wall surface of the annular groove, and a suction fan and a closed detection chamber partitioned by a partition plate are arranged in the detection box; the detection chamber is aligned with the air outlet and is communicated with the outside of the detection box through the air outlet, and the air inlet of the suction fan penetrates out of the detection box and is positioned in the annular groove; the air inlet and the air outlet of the suction fan are respectively positioned on two sides of the detection box and are coaxial; the air inlet of the suction fan is connected with the air pipe, the air outlet of the suction fan penetrates through the partition plate and is communicated with the interior of the detection chamber, and the air outlet of the suction fan and the air outlet are coaxial and do not contact with each other to form a detection space; a smoke sensor is arranged in the detection chamber, is arranged on the inner wall of the partition plate and is positioned between the air outlet and the air outlet of the suction fan; the main control chamber is in a hollow round table shape, wherein the radius of the top surface of the main control chamber is smaller than that of the bottom surface of the main control chamber; the main control chamber is internally provided with a controller, an audible and visual alarm and an electric push rod; the upper surface of the controller is provided with a starting button, the electric push rod is vertically arranged, the push rod penetrates through the main control chamber, and the push rod is provided with a pressing plate; the pressing plate is located in the main control chamber and is located right above the starting button, and the top of the push rod penetrates through the limiting ring.
Preferably, the air pipe is a hose, and the surface of the air pipe is coated with a fireproof coating; the length of the air pipe is not less than the perimeter of the annular groove; one end of the air pipe is connected with an air inlet of the suction fan, the outer wall of the port at the other end of the air pipe is connected with an elastic sealing strip, a clamping hook is arranged on the elastic sealing strip, and the air pipe is matched with the annular groove; the trip matches with the push rod.
Preferably, the width of the elastic seal is greater than the distance between the mounting plate and the main control chamber.
Preferably, the peripheral wall surface of the main control chamber is connected with a limiting ring, the limiting ring is matched and coaxial with the push rod, and the top surface of the limiting ring and the top surface of the main control chamber are located on the same plane.
Preferably, the bottom surface of the main control room is provided with a temperature sensor and a lifting rod button; the temperature sensor, the lifting rod button, the audible and visual alarm, the electric push rod, the suction fan and the smoke sensor are all electrically connected with the controller.
The invention has the beneficial effects that:
according to the invention, the air pipe is used for shielding the air outlet after surrounding along the annular groove, and the elastic sealing strip is used for shielding dust from entering the air pipe, so that the dust can be effectively prevented from entering the detection chamber to cause false alarm, and the sensitivity and the real-time performance of smoke detection are improved; still utilize the downward motion of push rod, make the tuber pipe fall behind, the suction fan restarts, can make the tuber pipe inhale the detection room with the smog of lower height, has improved the induction rate that smog detected, still makes the warning in advance, makes the suction fan work again only when needs detect simultaneously, the effectual resource of having saved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the overall structure of the air duct of the present invention after the air duct is detached.
FIG. 3 is a schematic view showing the internal structure of the cartridge of the present invention.
Fig. 4 is a schematic view of the internal structure of the main control room of the present invention.
Reference numerals: 10. mounting a plate; 20. a detection cartridge; 21. an annular groove; 22. an air outlet; 23. a suction fan; 24. a partition plate; 25. a detection chamber; 26. a smoke sensor; 30. a master control room; 31. a controller; 311. a start button; 32. an audible and visual alarm; 33. an electric push rod; 331. a push rod; 332. pressing a plate; 34. a limiting ring; 35. a temperature sensor; 36. a lift pin button; 40. an air duct; 41. an elastic seal; 42. and (7) clamping hooks.
Detailed Description
Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those embodiments can be easily implemented by those having ordinary skill in the art to which the present invention pertains. However, the present invention may be embodied in many different forms and is not limited to the embodiments described below. In addition, in order to more clearly describe the present invention, components not connected to the present invention will be omitted from the drawings.
As shown in fig. 1 to 4, an indoor fire alarm sensing device includes: the device comprises a mounting plate 10, a detection box 20, a main control chamber 30 and an air pipe 40; wherein the mounting plate 10 is disc-shaped, the mounting plate 10 is provided with a bolt hole for mounting the whole device on the ceiling of a house by pushing, the detection box 20 is positioned between the mounting plate 10 and the main control chamber 30, the detection box 20 is tubular, the periphery of the outer wall of the detection box is provided with an annular groove 21 with a semicircular section, the annular groove 21 is coaxial with the detection box 20, the outer wall surface of the annular groove 21 is also provided with an air outlet 22, the detection box 20 is internally provided with a suction fan 23 and a closed detection chamber 25 separated by a partition plate 24, the detection chamber 25 is aligned with the air outlet 22 and is communicated with the outside of the detection box 20 through the air outlet 22, the air inlet of the suction fan 23 penetrates through the detection box 20 and is positioned in the annular groove 21, the air inlet and the air outlet 22 of the suction fan 23 are respectively positioned at two sides of the detection box 20 and are coaxial, the air inlet of the suction fan 23 is connected with the air outlet 40 of the air pipe, the suction fan 23 penetrates through the partition plate 24 and is communicated with the inside of the detection chamber 25, the air outlet of the suction fan 23 is coaxial with the air outlet 22, the air outlet and the air outlet are not in contact with each other, a detection space is formed between the air outlet and the air outlet 22, a smoke sensor 26 for detecting smoke is arranged in the detection chamber 25, and the smoke sensor 26 is installed on the inner wall of the partition plate 24 and located between the air outlet of the suction fan 23 and the air outlet 22.
The utility model discloses a flexible pipe of tuber pipe 40 for can reconversion after buckling, its surface scribbles fire protection coating, the length of tuber pipe 40 is not less than ring channel 21's girth, the one end of tuber pipe 40 and the air intake connection of suction fan 23, the port outer wall of the other end is connected with elastic sealing strip 41, elastic sealing strip 41 is last to have trip 42, tuber pipe 40 and ring channel 21 phase-match, when tuber pipe 40 encircles along ring channel 21, the outer wall of tuber pipe 40 respectively with ring channel 21, and the bottom surface of mounting panel 10 and the top surface looks butt of main control room 30, the diameter of the disk that tuber pipe 40 formed after encircleing along ring channel 21 is the same with the top surface diameter of main control room 30, can make tuber pipe 40 encircle the back along ring channel 21, be located mounting panel 10, between the main control room 30, and shelter from exhaust vent 22, prevent that the dust from getting into inside the detection room 25.
The width of the elastic seal 41 is greater than the distance between the mounting plate 10 and the main control chamber 30, and after the air duct 40 is surrounded along the annular groove 21, the elastic seal 41 is located on the outer side of the air duct 40.
The main control chamber 30 is in a hollow round table shape, wherein the radius of the top surface of the main control chamber 30 is smaller than that of the bottom surface of the main control chamber 30, a controller 31, an audible and visual alarm 32 and an electric push rod 33 are arranged in the main control chamber 30, a starting button 311 is arranged on the upper surface of the controller 31, the starting button 311 is used for controlling the suction fan 23, the electric push rod 33 is vertically arranged, the push rod 331 penetrates out of the main control chamber 30, a pressing plate 332 is arranged on the push rod 331, and the pressing plate 332 is located in the main control chamber 30 and is positioned right above the starting button 311; the top of the push rod 331 penetrates through the limit ring 34 to be matched with the clamping hook 42; when the push rod 331 moves upwards to the maximum stroke, the top surface of the push rod 331 is abutted against the mounting plate 10, so that the hook 42 on the air duct 40 surrounded along the annular groove 21 is clamped on the push rod 331, the elastic seal 41 is in a stretched state at the moment, the upper side and the lower side of the elastic seal 41 are respectively tightly attached to the mounting plate 10 and the main control chamber 30, meanwhile, the air inlet end of the air duct 40 is blocked by the elastic seal 41, and dust can be effectively prevented from entering the air duct 40.
The outer wall of the main control chamber 30 is connected with a limit ring 34, the limit ring 34 is matched and coaxial with the push rod 331, the push rod 331 is inserted into the limit ring 34 and moves up and down along the limit ring 34, the top surface of the limit ring 34 and the top surface of the main control chamber 30 are in the same plane, when the push rod 331 moves down to the maximum stroke, the top surface of the push rod 331 is positioned in the limit ring 34, at this time, the pressure plate 332 presses the start button 311, the suction fan 23 is started, at the same time, under the action of the limit ring 34, the clamping hook 42 is separated from the push rod 331, under the action of the elasticity of the elastic seal 41 and the toughness of the air duct 40, the surrounding air duct 40 is scattered, and falls downward under the action of gravity, the air duct 40 is rotated and opened along the outer peripheral surface of the main control chamber 30 until the air duct is completely dispersed, the dispersed air duct 40 does not block the air outlet 22 any more, and the smoke in the detection chamber 25 can be discharged to the outside of the detection box 20 from the air outlet 22.
A temperature sensor 35 and a lifting rod button 36 are arranged on the bottom surface of the main control chamber 30; the temperature sensor 35, the rod lifting button 36, the audible and visual alarm 32, the electric push rod 33, the suction fan 23 and the smoke sensor 26 are all electrically connected with the controller 31, the controller 31 is used for controlling the whole device to work, specifically, when the temperature sensor 35 detects that the temperature exceeds a preset threshold value, a signal is sent to the controller 31, the controller 31 controls the push rod 331 of the electric push rod 33 to move downwards, when the top surface of the push rod 331 moves into the limit ring 34, the clamping hook 42 is separated from the push rod 331, the surrounding air pipe 40 is scattered, at the moment, the air pipe 40 does not shield the air outlet 22 any more, when the push rod 331 moves downwards to the maximum stroke, the pressing plate 332 presses the starting button 311, the suction fan 23 is started, the air pipe 40 can suck smoke with lower height into the detection chamber 25, the induction speed of smoke detection is improved, the alarm is advanced, and when the smoke sensor 26 detects that smoke exists, the smoke sensor 26 sends a signal to the controller 31, the controller 31 controls the action of the audible and visual alarm 32, so that people can find out the occurrence of fire.
The lifting button 36 is used for starting the electric push rod 33, and when the lifting button 36 is pressed, the push rod 331 of the electric push rod 33 moves upwards to the maximum stroke, so that the hook 42 of the air duct 40 is clamped on the push rod 331.
The working principle of the invention is as follows:
before use, the air duct 40 surrounds between the mounting plate 10 and the main control chamber 30 along the annular groove 21, then the rod-lifting button 36 is pressed, the push rod 331 of the electric push rod 33 moves upwards and abuts against the mounting plate 10, then the elastic seal 41 is pulled to enable the hook 42 to be clamped on the push rod 331, when the temperature sensor 35 is in a detection state and detects that the temperature sensor exceeds a preset threshold value, a signal is sent to the controller 31, the controller 31 controls the push rod 331 of the electric push rod 33 to move downwards, when the top surface of the push rod 331 moves into the limit ring 34, the hook 42 is separated from the push rod 331, the surrounding air duct 40 is scattered, at the moment, the air duct 40 does not shield the air outlet 22 any more, when the push rod 331 moves downwards to a maximum stroke, the pressing plate 332 presses the starting button 311, the suction fan 23 is started, the air duct 40 sucks smoke with a lower height into the detection chamber 25, when the smoke sensor 26 detects that smoke, the smoke sensor 26 sends a signal to the controller 31, the controller 31 controls the audible and visual alarm 32 to act, and the alarm work of fire is completed.
Claims (5)
1. An indoor fire alarm sensing device comprises a mounting plate (10), a detection box (20), a main control room (30) and an air pipe (40); the method is characterized in that: the mounting plate (10) is disc-shaped, and a bolt hole is formed in the top of the mounting plate (10); the detection box (20) is positioned between the mounting plate (10) and the main control room (30); the detection box (20) is a tubular object, an annular groove (21) with a semicircular section is formed in the periphery of the outer wall of the detection box, the annular groove (21) is coaxial with the detection box (20), an air outlet (22) is formed in the outer wall surface of the annular groove (21), and a suction fan (23) and a closed detection chamber (25) partitioned by a partition plate (24) are arranged in the detection box (20); the detection chamber (25) is aligned with the air outlet (22) and is communicated with the outside of the detection box (20) through the air outlet (22), and the air inlet of the suction fan (23) penetrates through the detection box (20) and is positioned in the annular groove (21); the air inlet and the air outlet (22) of the suction fan (23) are respectively positioned on two sides of the detection box (20) and are coaxial; an air inlet of the suction fan (23) is connected with the air pipe (40), an air outlet of the suction fan (23) penetrates through the partition plate (24) and is communicated with the interior of the detection chamber (25), and an air outlet of the suction fan (23) is coaxial with the air outlet (22) and does not contact with the air outlet to form a detection space; a smoke sensor (26) is arranged in the detection chamber (25), and the smoke sensor (26) is arranged on the inner wall of the partition plate (24) and is positioned between the air outlet of the suction fan (23) and the air outlet (22); the main control chamber (30) is in a hollow round table shape, wherein the radius of the top surface of the main control chamber (30) is smaller than that of the bottom surface; a controller (31), an audible and visual alarm (32) and an electric push rod (33) are arranged in the main control chamber (30); a starting button (311) is arranged on the upper surface of the controller (31), the electric push rod (33) is vertically arranged, the push rod (331) penetrates out of the main control chamber (30), and a pressing plate (332) is arranged on the push rod (331); the pressure plate (332) is positioned in the main control chamber (30) and right above the starting button (311), and the top of the push rod (331) penetrates through the limiting ring (34); the length of the air pipe (40) is not less than the perimeter of the annular groove (21); one end of the air pipe (40) is connected with an air inlet of the suction fan (23), the outer wall of the port at the other end is connected with an elastic seal (41), a clamping hook (42) is arranged on the elastic seal (41), and the air pipe (40) is matched with the annular groove (21); the trip (42) and the push rod (331) are matched, and the bottom surface of the main control room (30) is provided with a temperature sensor (35) and a lifting rod button (36).
2. An indoor fire alarm sensing device according to claim 1, wherein: the air pipe (40) is a hose, and the surface of the air pipe is coated with a fireproof coating.
3. An indoor fire alarm sensing device according to claim 2, wherein: the width of the elastic seal (41) is larger than the distance between the mounting plate (10) and the main control room (30).
4. An indoor fire alarm sensing device according to claim 1, wherein: the limiting ring is connected to the peripheral wall surface of the main control chamber (30), the limiting ring (34) is matched and coaxial with the push rod (331), and the top surface of the limiting ring (34) and the top surface of the main control chamber (30) are located on the same plane.
5. An indoor fire alarm sensing device according to claim 1, wherein: the temperature sensor (35), the lifting rod button (36), the audible and visual alarm (32), the electric push rod (33), the suction fan (23) and the smoke sensor (26) are all electrically connected with the controller (31).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110372593.4A CN112802296B (en) | 2021-04-07 | 2021-04-07 | Indoor fire alarm sensing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110372593.4A CN112802296B (en) | 2021-04-07 | 2021-04-07 | Indoor fire alarm sensing device |
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| CN112802296A CN112802296A (en) | 2021-05-14 |
| CN112802296B true CN112802296B (en) | 2021-12-14 |
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| CN202110372593.4A Active CN112802296B (en) | 2021-04-07 | 2021-04-07 | Indoor fire alarm sensing device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484205A (en) * | 2021-06-22 | 2021-10-08 | 中国商用飞机有限责任公司 | Smoke detection system and aircraft with same |
| CN113436405B (en) * | 2021-07-13 | 2023-03-28 | 深圳市创景科技发展有限公司 | Fire alarm and fire extinguishing device |
| CN114387756B (en) * | 2021-12-31 | 2023-12-26 | 新驱动(福建)信息科技有限公司 | Combined fire detector convenient to assemble |
| CN114754449B (en) * | 2022-05-19 | 2024-04-02 | 武汉尚燃科技有限公司 | Fire safety precaution device |
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| KR20080040531A (en) * | 2006-11-03 | 2008-05-08 | 우영석 | Fire detector |
| KR20180010798A (en) * | 2016-07-22 | 2018-01-31 | 장승우 | Automatic fire extinguisher apparatus for restaurant hood |
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Effective date of registration: 20211129 Address after: 318000 No. 95 Dongmen Road, Jiaojiang District, Taizhou City, Zhejiang Province Applicant after: Xu Dan Address before: 330096 c-31, building A3, Hongtai Zhizao workshop, No. 719, Huoju 5th Road, Nanchang hi tech Industrial Development Zone, Nanchang City, Jiangxi Province Applicant before: Nanchang Xuma Information Technology Co.,Ltd. |
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