CN201788565U - Smoke sensitive fire hazard detection alarm - Google Patents
Smoke sensitive fire hazard detection alarm Download PDFInfo
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- CN201788565U CN201788565U CN2010202480388U CN201020248038U CN201788565U CN 201788565 U CN201788565 U CN 201788565U CN 2010202480388 U CN2010202480388 U CN 2010202480388U CN 201020248038 U CN201020248038 U CN 201020248038U CN 201788565 U CN201788565 U CN 201788565U
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Abstract
An aspiration type point-type smoke sensitive fire hazard detection alarm which adopts a laser tube as a luminous element is provided with a circular general base and fixed on a roof or ceiling via screws. An alarm is spirally fastened on the base, the base is successively provided with a bottom support, a circuit board, a middle support, a main body, a fan, a filter box and an alarm upper cover, wherein the bottom support and the middle support form a space with a detecting cavity and the circuit board inside, the circuit board is arranged above the middle support, copper foils are totally coated on peripheral walls of the space, the space is provided with an air outlet, the main body is covered outside alarm, two sides of the main body are respectively fixed via plugs, a display module is embedded on the main body, the fan is closed and surrounded by the middle support and the main body, the main body is connected with a filter bottom cover, and a filter screen is mounted in a space formed by the filter bottom cover and the filter upper cover. The alarm is low in cost and price, small in volume, convenient in installation and small in protection area (64 square meters), is applicable to small-area key fireproofing occasions, and can realize large-sized networking and remote monitoring.
Description
Technical field
The utility model relates to a kind of alarm, relates in particular to a kind of fire detecting and alarm device.
Background technology
Smoke detector is by the detection of fires initial stage because the smog that comburant produces when glowing is reported to the police, so played the effect of pre-alarm in most of occasions.Smoke detector is at present most widely used to be ion smoke detector and photoelectric smoke detector.
Ion smoke detector and photoelectric smoke detector originate in product and technology decades ago, because it is cheap very popular, still with the development of technology, its shortcoming is also more obvious.Traditional smoke detector sensitivity is low, and detection mode is a passive alarm mode, has also occurred naked light even report to the police, and loss is serious, and light source is a wide spectrum, need not to focus on and simple structure, and is not obvious for less smoke particle reaction.Large-scale air suction type smoke detecting alarm is mainly used in some large-scale emphasis fire prevention places, and the aspiration pump system is with four tunnel sampling inner air tube suction laser acquisition chambeies in the main frame, and the protection area is generally 2000 square metres.For some small-sized mobile transmitter rooms it not only volume big, cost an arm and a leg, waste one's talent on a petty job especially.
1, sensitivity is low: sensitivity is 2-10%obs/m only, promptly have only when indoor smog fills the air and just can produce warning, indoor being full of in a large number through thermal decomposition and unburned material (smog) during warning, this moment is in case there is naked light just can light these smog, form indoor detonation or be called flash burn, in case,, also all scrap though indoor property is not burnt down so detonation just can only be put out by water by water.So can't leave the time of sufficiently long processing initial fire disaster when using ion smoke detector and optical detector of fire smoke to report to the police, will soon form flash burn.
2, need often to clean calibration sensitivity: because cigarettes such as passive open types, after moving for a long time, its optical system and emission light, receive on the device of light and all can fall to having a lot of dusts, make lower that sensitivity falls, so regularly (1-2) takes cleaning.In addition, if fall to having dust on the optical system, then dim light formula probe photo detector reception light is littler, forms the i.e. wrong report of reporting to the police.If fall to having dust on the optical system, the spontaneous formation astigmatism of meeting causes warning promptly to report by mistake on the light-emitting component of then astigmatic formula probe.
3, contain radioelement in the ion smoke detector, this radioelement can't be dealt carefully with at the life of product after date at all, and contaminated environment also pollutes environment when cleaning, and native land man also allows it be eliminated gradually.
Though 4, the sensitivity of large-scale air suction type smoke detecting alarm is high, rate of false alarm is low, and its individual protect area is about 300-2000 square metre, and cost is higher, and general only use is good at being generalized to small sized applications in more important large tracts of land place.
5, ion, optical detector of fire smoke open market price are in units up to a hundred, and the price of air suction type detector is generally in several ten thousand yuan even unit up to ten thousand.
The utility model content
The purpose of this utility model is: inventing a kind of is the air suction type point type smoke detecting alarm of light-emitting component with the laser tube.Laser is single spectrum, and directivity is extremely strong in the transmission course, and the utility model has added multistage grating again on light path, makes that scattered light reduces to zero on the light path of Laser Transmission, and sensitivity and vigilance level are high.The smoke particle diameter is below ten microns, and the sensitivity of this system is 0.004obs/m, than traditional high nearly 1000 times.
The utility model is achieved in that the smoke detecting alarm is equipped with circular general base, can be fixed on roof or the ceiling by three screws, alarm can be stablized with four spiral buckles above to be stuck on the base.The T type filter box that collet, circuit board, middle holder, main body, blower fan is installed on the base successively and is made up of filter cover, filtrator bottom, screen pack bonding is the alarm loam cake at last.Wherein collet and middle holder form a space, this space is built-in with detection cavity and circuit board, middle holder top is a circuit board, circuit board top is placed with circuit devcies such as laser beam emitting device, laser receiver, processor of single chip computer and communication RS485 interface, some node output units such as power supply, fire alarm.Wall all is surrounded by Copper Foil around this space, prevents that outer bound pair detection cavity from forming interference, and this space must have the gas outlet, and some circular holes are promptly arranged on the base, and this circular hole can compatible wire hole.The outside is covered with main body.To LED light should be arranged, the equipment that is respectively is normal, early warning, fire alarm and malfunction indicator lamp on the main body.The main body both sides have plug to fix respectively.Display module is embedded on the main body, can show fault, information such as quiet, also can use button to carry out to reset, operation such as self check.Blower fan is surrounded by the sealing of middle holder and main body, and blower fan adopts two blower fans, when one of them blower fan damages, but another operate as normal still.Main body links to each other with the filtrator bottom, and filtrator bottom and filter cover form in the space screen pack is installed, and screen pack includes the different three-stage filtration material of thickness also can two or more filtering materials, can be two-layer or multilayer.Described detection cavity adopts the structure of miniaturization, is made up of laser instrument, focus lamp, receiver and laser absorption pad.The shape of described filter box can be T type, square or circle etc.
The utility model is compared to the good effect of prior art: the utility model is innovated large-scale air suction type smoke detection alarm apparatus, has released air suction type point type smoke detection alarm of new generation, is characterized in that cost is low, low price; Volume is little, is convenient to install; Protection area little (64 square metres) is applicable to the emphasis fire prevention place of small size, and can carries out large-scale networking and remote monitoring.It promptly can be chosen to point type active inspiration formula, also can stretch out sampling pipe, form sample mode flexibly, construct less (Φ 170mm, thickness 80mm), lower, the convenient for maintaining of cost, function is very perfect, can be installed on industry and covil construction place and some emphasis fire prevention place, be particularly useful for less moving machine room early warning.
Description of drawings
Fig. 1 is a cross-sectional view of the present utility model.
Fig. 2 is the cross-sectional view and the flow pattern figure of detection cavity 4 of the present utility model
Fig. 3 is the cross-sectional view and the flow pattern figure of screen pack 14 of the present utility model.
Fig. 4 is the structural representation of T type filter box of the present utility model.
Fig. 5 is a network connection diagram of the present utility model.
Fig. 6 is the air-flow air inlet mode chart of the utility model list sampling pipe 13.
Fig. 7 is the air-flow air inlet mode chart of the two sampling pipes 13 of the utility model.
Fig. 8 is the built-up sequence structural representation of each parts of the utility model.
Embodiment
Shown in Fig. 1,2,3,4, be the cross-sectional view of cross-sectional view of the present utility model and detection cavity 4, screen pack 14 and flow pattern figure and T type filter box structural representation.The utility model air suction type point type smoke detecting alarm includes circular general base 1 as seen from the figure, can be fixed on roof or the ceiling by three screws, can be stuck on the base 1 alarm is stable with four spiral buckles above, parts mutual alignments such as machine casing are shown in the built-up sequence structural representation of each parts of Fig. 7.The T type filter box that collet 2, circuit board 5, middle holder 6, main body 7, blower fan 9 is installed on the base 1 successively and is made up of filter cover 11, filtrator bottom 10, screen pack 14 bondings is alarm loam cake 12 at last.
The top of blower fan 9 is a negative pressuren zone, can be directly sucks gases from air intake opening 20 and air admission hole 19, as the air-flow air inlet mode chart of the single, double sampling pipe of Fig. 5, the utility model sampling pipe 13 shown in Figure 6; Air intake opening 20 is the air intake opening of alarm self band, and air admission hole 19 is that alarm is external
Air admission hole on the sampling pipe 13.The air that the outside contains smoke particle can enter detection cavity 4 inside simultaneously from air intake opening 20 and air admission hole 19, advances air as independent use air intake opening 20, then is typical point type detection mode; If only advance air from air admission hole 19, but plug 8 inserts
Sampling pipe 13, pipe range 3-5 rice drives pore 19 on it, constitute common miniature pvc pipe sample mode.Certain two kinds of air inlets can be used simultaneously.
Two blower fans 9 of the present utility model are closed in same negative pressuren zone, and promptly air intake opening 20 and air admission hole 19 air communicate, and if herein airtight extremely important is gas leakage then can't suck the air of air intake opening 20 and air admission hole 19.Shown in Fig. 1,3, blower fan 9 sucks air from air intake opening 20 and air admission hole 19, about 85% air can be from the gas outlet 22 be directly drained in this air, remaining air enters from the air intake opening 26 of T type filter box shown in Figure 4, and be blown in the screen pack 14 of T type filter box, portion of air forms a road gas shown in Fig. 3 after three-stage filtration net 14 filters, and another part air forms the very clean b road gas shown in Fig. 3 through filtering once more.A road gas flows out from the gas outlet 27 of T type filter box, and enters (as shown in Figure 2) the detection cavity 4 from the air intake opening 25 of detection cavity 4, measures its airborne particle concentration through detection cavity 4, overflows from the gas outlet 23 of detection cavity 4; B road gas flows out from the gas outlet 28 of T type filter box, and enters in the detection cavity 4 (as shown in Figure 2) from the air intake opening 24 of detection cavity 4, blows on focus lamp 15 and the receiver 16, to focus lamp 15 and receiver 16 are cleaned, protects it not contaminated for a long time.Have only clean gas could guarantee effectively that at focus lamp 15 and receiver 16 formation malleations they are not polluted, do not reduce their sensitivity for a long time, so air suction type point type smoke alarm does not just need frequent calibration through cascade filtration.
The detection cavity 4 of the utility model air suction type spot-type smoke detector adopts the structure of miniaturization, is made up of laser instrument 21, focus lamp 15, receiver 16 and laser absorption pad 29.Laser instrument 21 emission of lasering beam form the extra-heavy light beam after focusing on through focus lamp 15, disperse the back astigmatism to be absorbed by laser absorption pad 29, and receiver 16 adopts multistage grating to make scattered light reduce to zero, has guaranteed its accuracy.Owing to good removing parasitic light measure is arranged, so its sensitivity is equal to large-scale air suction type smoke detecting alarm.Form astigmatism if run into particulate (comprising smoke particle) behind the laser instrument 21 emission laser, astigmatism is received device 16 and receives the pulse of back formation light-receiving, the width of this pulse and quantity depend on airborne particle concentration, send into shaping circuit after this received pulse is exaggerated and become frequency signal, count by single-chip microcomputer then, and handle according to related software, determine whether output alarm again.
The communication interface of this air suction type point type smoke detecting alarm includes the RS485 interface, can form a network system by RS485 interface and PC-LINK etc., realizes the centralized network management.Be connected with computing machine by the RS232 interface, realize remote monitoring function.As shown in Figure 4, be network connection diagram of the present utility model, from 1 to 127 of the alarm number arbitrarily number connect, communication is the alarm that needs the address to be distinguished, what alarm used is 8 binary address switches, can distinguish 128 addresses at most.Wherein connect by 485 lines between each alarm, the Shielded Twisted Pair of scene 2, shielding layer grounding are advanced in 485 connection employing two.PC-LINK uses 232 mouthfuls with computing machine and is connected, and 232 cross spiders are used in 232 connection, and 232 cross spiders use the nine kinds of needles connection plug, and the 5th pin directly links to each other, and two, three at phase modulation even.Use 485 lines by the All Alerts device is coupled together, and it is connected in series on 485 mouthfuls of PC-LINK, 232 mouthfuls of PC-LINK are used 232 cross spiders to be connected with computer by serial, form a network system of being made up of many alarms, PC-LINK and computing machine.Carry out identification by 8 bit address sign indicating numbers between each alarm, thereby realize the communication of computing machine and many alarms and realize remote monitoring function.
Following channel is adopted in the enforcement of the utility model air suction type point type smoke detecting alarm:
1, replaces original ion, photoelectric probe: former probe is removed; on its fire-fighting two buses, connect input interface module (about dozens of yuan Renminbi); can be connected to air suction type point type smoke detecting alarm; the space that needs in the fire-fighting system to lay special stress on protecting can be replaced; and need not change former fire-fighting main frame and line, its market scope is huge.
2, in the new design for fire protection, important occasion and small size key preservation area, as the machine room of office building, the instrument room of smokeless office and safe care registry, hospital etc.
3, high-grade smokeless place all can be used as senior office building, hotel, administrative suite, president suite etc.
4, various 30 square metres of small-sized telco module machine rooms (whole nation have hundreds of thousands), the cellular base station of each commmunication company is (less than 15 square metres, nearly 300,000 of national centre base station, up to a million of terminal small base station, the value of minimum base station also reaches hundreds of thousands Renminbi).
5, owing to its network savvy can form network monitoring with the base stations or the module machine room in up to a hundred areas, form tens of a PC monitoring scale and arrive a hundreds of alarm.The utility model detecting alarm can connect GPRS Wireless Networking module, can enter Ethernet, realizes above-mentioned functions.
Implement in a manner described, estimate within a short period of time and start a large-scale climax of using.
The utility model can be deformed into different outward appearances, all belongs to same design of the present utility model, and its main deformation direction includes: blower fan 9 is two blower fans, can adopt list, multi fan; Screen pack 14 can be two-layer or multilayer, can adopt two or more filtering materials; The shape of filter box is that the T type also can or be justified for the side; Filtering system is divided into coarse filtration and fine filtering, forms two-way gas altogether, and the gas of coarse filtration enters in the detection cavity to be surveyed, and the thin gas that filters cleans focus lamp and receiver; Can be changed into multipath gas, wherein one the tunnel survey in the multichannel, the one tunnel cleans laser cavity; Design of the present utility model is to give vent to anger also variable being changed in the middle of air inlet all around
Middle air inlet, monolateral, both sides or give vent to anger all around; The position of display device also can be on the top in the side.
Claims (8)
1. smoke detecting alarm, it is characterized in that: this alarm is equipped with circular general base, and spiral card is buckled with alarm on the base; Collet, circuit board, middle holder, main body, blower fan, filter box are installed on the base successively, are the alarm loam cake at last; Wherein collet and middle holder form a space and are built-in with detection cavity and circuit board, and middle holder top is a circuit board, and wall all is surrounded by Copper Foil around this space, and has the gas outlet; Outer side covers has main body; The main body both sides have plug to fix respectively; Display module is embedded on the main body; Blower fan is surrounded by middle holder and main body sealing; Main body links to each other with the filtrator bottom, and filtrator bottom and filter cover form in the space screen pack is installed.
2. fire detecting and alarm device as claimed in claim 1 is characterized in that: described circuit board top is placed with laser beam emitting device, laser receiver, processor of single chip computer and communication RS485 interface arrangement and node output unit.
3. fire detecting and alarm device as claimed in claim 1 is characterized in that: described blower fan adopts two blower fans, when one of them blower fan damages, but another operate as normal still.
4. fire detecting and alarm device as claimed in claim 1 is characterized in that: described plug has two classes, and a class is for connecing
Sampling pipe plug, a class are the wire hole plug.
5. fire detecting and alarm device as claimed in claim 1 is characterized in that: to LED light should be arranged, the equipment that is respectively is normal, early warning, fire alarm and malfunction indicator lamp on the described main body.
6. fire detecting and alarm device as claimed in claim 1 is characterized in that: described detection cavity adopts the structure of miniaturization, is made up of laser instrument, focus lamp, receiver and laser absorption pad.
7. fire detecting and alarm device as claimed in claim 1 is characterized in that: described filter box is formed by filter cover, filtrator bottom, screen pack bonding.
8. fire detecting and alarm device as claimed in claim 7 is characterized in that: described screen pack includes the different three-stage filtration material of thickness, is two-layer or multilayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202480388U CN201788565U (en) | 2010-07-06 | 2010-07-06 | Smoke sensitive fire hazard detection alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202480388U CN201788565U (en) | 2010-07-06 | 2010-07-06 | Smoke sensitive fire hazard detection alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201788565U true CN201788565U (en) | 2011-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202480388U Expired - Fee Related CN201788565U (en) | 2010-07-06 | 2010-07-06 | Smoke sensitive fire hazard detection alarm |
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| CN (1) | CN201788565U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102314745A (en) * | 2010-07-06 | 2012-01-11 | 鼎盛特安全预警技术(北京)有限公司 | Smoke-sensing fire detection alarming device |
| CN104459817A (en) * | 2014-12-16 | 2015-03-25 | 公安部沈阳消防研究所 | Fire sign detection device and method |
| CN108765852A (en) * | 2018-06-15 | 2018-11-06 | 芜湖中淇节能科技有限公司 | A kind of security monitoring smoke inductor box device |
| CN112242042A (en) * | 2020-09-28 | 2021-01-19 | 上海嘉筠通信技术有限公司 | Combustible gas detector with intelligent shopping function |
| CN112562252A (en) * | 2021-02-20 | 2021-03-26 | 南京擅水科技有限公司 | Fire smoke detection alarm device |
-
2010
- 2010-07-06 CN CN2010202480388U patent/CN201788565U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102314745A (en) * | 2010-07-06 | 2012-01-11 | 鼎盛特安全预警技术(北京)有限公司 | Smoke-sensing fire detection alarming device |
| CN102314745B (en) * | 2010-07-06 | 2013-07-10 | 鼎盛特安全预警技术(北京)有限公司 | Smoke-sensing fire detection alarming device |
| CN104459817A (en) * | 2014-12-16 | 2015-03-25 | 公安部沈阳消防研究所 | Fire sign detection device and method |
| CN108765852A (en) * | 2018-06-15 | 2018-11-06 | 芜湖中淇节能科技有限公司 | A kind of security monitoring smoke inductor box device |
| CN112242042A (en) * | 2020-09-28 | 2021-01-19 | 上海嘉筠通信技术有限公司 | Combustible gas detector with intelligent shopping function |
| CN112242042B (en) * | 2020-09-28 | 2022-04-26 | 上海嘉筠通信技术有限公司 | Combustible gas detector with intelligent shopping function |
| CN112562252A (en) * | 2021-02-20 | 2021-03-26 | 南京擅水科技有限公司 | Fire smoke detection alarm device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20140706 |
|
| EXPY | Termination of patent right or utility model |