CN107016815A - Photoelectric smoke sensor - Google Patents
Photoelectric smoke sensor Download PDFInfo
- Publication number
- CN107016815A CN107016815A CN201710046252.1A CN201710046252A CN107016815A CN 107016815 A CN107016815 A CN 107016815A CN 201710046252 A CN201710046252 A CN 201710046252A CN 107016815 A CN107016815 A CN 107016815A
- Authority
- CN
- China
- Prior art keywords
- light
- pcb
- circuit board
- printed circuit
- darkroom
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000779 smoke Substances 0.000 title claims abstract description 43
- 229920005989 resin Polymers 0.000 claims abstract description 54
- 239000011347 resin Substances 0.000 claims abstract description 54
- 239000004020 conductor Substances 0.000 claims abstract description 53
- 239000011521 glass Substances 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 10
- 238000004880 explosion Methods 0.000 description 5
- 230000002265 prevention Effects 0.000 description 5
- 241000238631 Hexapoda Species 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010892 electric spark Methods 0.000 description 2
- 239000005304 optical glass Substances 0.000 description 2
- 239000000941 radioactive substance Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910052695 Americium Inorganic materials 0.000 description 1
- 239000004425 Makrolon Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- LXQXZNRPTYVCNG-UHFFFAOYSA-N americium atom Chemical compound [Am] LXQXZNRPTYVCNG-UHFFFAOYSA-N 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000005308 flint glass Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
- G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
- G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
The present invention provides a kind of with INCREASEDSAFETY blast resistance construction, can be set at building, plant facilities, the photoelectric smoke sensor of ship under imflammable gas environment.Photoelectric smoke sensor has in housing (1)：Printed circuit board (PCB) (5), it is configured with light-emitting component (2) and photo detector (3)；And darkroom (7), it is surrounded by labyrinth body (6).It is arranged on the light-emitting component (2) and photo detector (3) of printed circuit board (PCB) (5) to be configured in darkroom (7), the presence or absence of scattering of light in darkroom (7), degree is detected and smog is detected.Separated in housing (1) interior printed circuit board (PCB) (5) and darkroom (7) by dividing plate (10).It is provided with printed circuit board (PCB) (5)：Illuminating light conductor (11), it through dividing plate (10) and guides the light of light-emitting component (2) to darkroom (7)；And light is with light conductor (12), it through dividing plate (10) and guides light to photo detector (3) from darkroom (7).Resin (14) is filled with being separated by dividing plate (10) and accommodating the space in the housings (1) of printed circuit board (PCB) (5).
Description
Technical field
There is light-emitting component (light source) and photo detector the present invention relates to one kind, use up and detect the photo-electric smog of smog
Sensor.
Background technology
Always, in the automatic fire-alarm system being arranged in the building, plant facilities, ship in building etc., use
The situation of photoelectric smoke sensor is a lot.
Generally, photoelectric smoke sensor has the printed circuit board (PCB) for being assembled with light-emitting component and photo detector in housing
With the darkroom surrounded by labyrinth (labyrinth type) body.The light-emitting component and photo detector for being arranged on printed circuit board (PCB) are configured to exposure
In darkroom, by the presence or absence of scattering of light in darkroom, scattering degree detected and detect smog (for example, referring to
Following patent documents 1).
The photoelectric smoke sensor so constituted is applicable the law of labour safety and health, ship as a kind of electricapparatus utensil
Standard.For example, being arranged in photoelectric smoke sensor in imflammable gas such as propane, gasoline, paint thinners
In the case of factory, enterprise under environment etc., it is possible to led due to entering the dust in photoelectric smoke sensor, insect etc.
The electric part short-circuit (short) on printed circuit board (PCB) is caused to produce spark and pilot gas.
Therefore, in the case of the building that photoelectric smoke sensor is set under imflammable gas environment,
Need photoelectric smoke sensor that there are the resistance to explosion-proof means of inbeing safe explosion prevention structure, INCREASEDSAFETY blast resistance construction etc..
For example, chemical synthesis shop equipment, using the space of imflammable gas be leakage imflammable gas contact light a fire
Source (electric spark, object of high temperature etc.) and the place for being likely to become the occurring source of fire, electrical equipment are it is necessary that with anti-
The electrical equipment of quick-fried structure.In this environment using the electrical equipment with inbeing safe explosion prevention structure.In essence peace
In holotype blast resistance construction in order to tackle the overvoltage of electrical equipment, overcurrent and use guard grating device.In addition, guard grating device
It is disposed on the electrical equipment of Dangerous Place and keeps safe device between the power supply of safe place.In addition above-mentioned
Environment in also using the explosion-proof structure of metal shell etc..In explosion-proof structure, need to be suitable for resistance to for wiring
The explosion-proof pipeline of pressure (such as metal tube).
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2009-245088 publications.
The invention problem to be solved
It is used as the resistance to explosion-proof means of photoelectric smoke sensor, widely used inbeing safe explosion prevention structure.But, essence
Explosion-proofing safe structure is due to guard grating device for tackling overvoltage, overcurrent etc., so being complicated and expensive
Device structure.On the other hand, INCREASEDSAFETY blast resistance construction mechanical structure compared with inbeing safe explosion prevention structure is simple, cost also by
Suppress low.But, INCREASEDSAFETY blast resistance construction is not adopted to the resistance to explosion-proof means of photoelectric smoke sensor.In the past, photoelectricity
The INCREASEDSAFETY blast resistance construction of formula Smoke Sensor turns into complicated structure due to being explosion-proof structure, further, since necessary
Using the pipeline of expensive part, metal etc., so can not be made with appropriate cost.
In addition, as the Smoke Sensor of inbeing safe explosion prevention structure, also having without using photoelectric smoke sensor
Use the ionization formula Smoke Sensor using radioactive substance.But, ionization formula Smoke Sensor is high due to cost, especially
It is to have used radioactive substance americium (Am241), there is strict restriction so being discarded to it.
The content of the invention
There is INCREASEDSAFETY blast resistance construction it is an object of the invention to provide one kind, imflammable gas ring can be set at
The photoelectric smoke sensor of building, plant facilities and ship under border.
Scheme for solving problem
The first aspect of invention is a kind of photoelectric smoke sensor, and it has in housing：Printed circuit board (PCB), it is configured
There are light-emitting component and photo detector；And darkroom, it is surrounded by labyrinth body, is arranged on the above-mentioned luminous member of above-mentioned printed circuit board (PCB)
Part and above-mentioned photo detector are configured in the above-mentioned darkroom, and the presence or absence of at random, the degree to the light in above-mentioned darkroom are entered
Row detection and detect smog, the photoelectric smoke sensor is characterised by, in above-mentioned housing, above-mentioned printed circuit board (PCB) and
Above-mentioned darkroom is separated by dividing plate, is provided with above-mentioned printed circuit board (PCB)：Illuminating light conductor, it runs through aforementioned barriers and will be above-mentioned
The light of light-emitting component is guided to above-mentioned darkroom, and light light conductor, and it draws light through aforementioned barriers and from above-mentioned darkroom
Above-mentioned photo detector is directed at, is being separated by aforementioned barriers and is accommodating the space filling in the above-mentioned housing of above-mentioned printed circuit board (PCB)
There is resin.
The second aspect of invention is the photoelectric smoke sensor according to the first aspect of invention, it is characterised in that
Above-mentioned illuminating light conductor and above-mentioned light are glass systems with light conductor, above-mentioned illuminating light conductor and above-mentioned light-emitting component that
This contact, and/or, above-mentioned light is in contact with each other with light conductor and above-mentioned photo detector.
The third aspect of invention is the photoelectric smoke sensor according to the first aspect or second aspect of invention, its
It is characterised by, above-mentioned resin meets the standard of the UL746B of UL standards continuous operating temperature COT (high temperature).
The fourth aspect of invention is the photo-electric smog sensing according to any one of first~third aspect of invention
Device, it is characterised in that in the circuit of above-mentioned printed circuit board (PCB), Thermal Cutoffs is connected in series with the power line.
5th aspect of invention is the photo-electric smog sensing according to any one of first~fourth aspect of invention
Device, it is characterised in that above-mentioned housing is formed by the resin for meeting the UL94 of the UL standards V-0 standards on anti-flammability.
6th aspect of invention is the photo-electric smog sensing according to any one of the first~the 5th aspect of invention
Device, it is characterised in that above-mentioned resin has in embedment in the state of above-mentioned printed circuit board (PCB), does not contain the diameter gas bigger than 200 μm
Bubble.
Invention effect
Invention according to the first aspect of invention, due to being assembled with the printed circuit board (PCB) of light-emitting component and photo detector
The state buried as the resin covering being filled in the space in the housing separated with dividing plate, so turning into from flammable gas
The state of body isolation, can reliably prevent the thermal conductivity that the electric spark of the electric part on printed circuit board (PCB), electric part are produced from causing
Ignite imflammable gas.Furthermore it is possible to dust, insect etc. and the contact of the electric part on printed circuit board (PCB) are entirely prevented,
It can reliably prevent from causing electric part short-circuit (short) and the imflammable gas that ignites by dust, insect etc..Therefore, it is of the invention
It is useful as the photoelectric smoke sensor for the building being set under imflammable gas environment.Further, since this
The photoelectric smoke sensor of invention it is simple in construction, so easy to manufacture, and can be manufactured with low cost.And then, by
Covered in printed circuit board (PCB) in the state of embedment resin by resin, even if so photoelectric smoke sensor is placed on corrosion
Property gaseous environment under will not also make electric part, printed circuit board (PCB) deterioration.
Furthermore, it is possible to be sensed without using costly and complicated guard grating device, to the discarded ionization formula smog for having restriction
Device, can be realized with cheap and simple structure.
And then, due to that can spread the heating of electric part by the resin filled, so the temperature in housing can be made
Uniformly, it is possible to increase the life-span of electric part, reliability.
Further, since the printed circuit board (PCB) being capped in the state of embedment resin is provided with through dividing plate and by luminous member
The light of part is guided to the illuminating light conductor in darkroom and guided through dividing plate and by light from darkroom to the light of photo detector with leading
Body of light, so can be detected to the presence or absence of scattering of light in darkroom, degree and reliably detect smog.
Invention according to the second aspect of invention, can by illuminating light conductor by the light of light-emitting component reliably
In guiding to darkroom, and/or, light member will be to reliably guided in the light of dark room scattering with light conductor by light
Part.Especially by making the photo detector of reception faint light contact light light conductor, have so as to improve under clearance condition
Light loss.
Invention according to the third aspect of invention, by using the regulation for meeting continuous operating temperature COT (high temperature)
Resin, even if electronic unit generate heat resin can also maintain design on predetermined characteristic, therefore, it is possible to maintain explosion-proof performance.
Invention according to the fourth aspect of invention, the hair by electronic unit can be prevented by using Thermal Cutoffs
Thermal conductivity causes the temperature of printed circuit board (PCB) to exceed design temperature.In addition, resin is able to maintain that the predetermined characteristic in design, so as to
Maintain explosion-proof performance.
Invention according to the 5th of invention the aspect, by using above-mentioned resin, occurs different even in the inside of housing
In the case of often, it can also prevent housing from being caught fire caused by rising due to temperature, because resin is able to maintain that the regulation in design
Characteristic is so be able to maintain that explosion-proof performance.
Invention according to the 6th of invention aspect because resin not bubbles, can reliably by resin and
Printed circuit board (PCB) and electronic unit are isolated from the environment (such as imflammable gas environment) around photoelectric smoke sensor,
Furthermore it is possible to maintain explosion-proof performance.
Brief description of the drawings
Fig. 1 is the general profile chart for the embodiment for showing the photoelectric smoke sensor of the present invention.
Embodiment
Hereinafter, one side reference picture 1, while the embodiment to the photoelectric smoke sensor of the present invention is carried out specifically
It is bright.
The photoelectric smoke sensor of present embodiment has in its housing 1：It is configured with light-emitting component 2, photo detector 3
And printed circuit board (PCB) 5 and the darkroom 7 that is surrounded by labyrinth body 6 of the grade of display lamp 4.Being assembled with printed circuit board (PCB) 5 makes light-emitting component
The circuit portion (not shown) that 2 luminous and to photo detector 3 light are detected.Printed circuit board (PCB) 5 is fixed on by bolt 8
It is formed at the mounting bracket 9 in housing 1.In addition, printed circuit board (PCB) 5 and darkroom 7 are separated in housing 1 by dividing plate 10.
Housing 1 is formed by the resin for meeting the UL94 of the UL standards V-0 standards on anti-flammability.
It is provided with printed circuit board (PCB) 5：Illuminating light conductor 11, it through dividing plate 10 and guides the light of light-emitting component 2
To darkroom 7；Light light conductor 12, it through dividing plate 10 and guides light to photo detector 3 from darkroom 7；And display lamp is used
Light conductor 13, it through dividing plate 10 and guides the light of display lamp 4 to outside housing 1.
End face and light in the darkroom 7 of illuminating light conductor 11 be with the end face in the darkroom 7 of light conductor 12 it is inclined,
And it is opposite as the reflecting surface of light.By the structure, can be gone out with high-sensitivity detection illuminating light conductor 11 end face and
Cigarette of the light between the end face of light conductor 12.Each end face of these light conductors can be by tilting cut-out come shape by each light conductor
Into can also be formed by being bonded prism in the end face of level.As long as the light from illuminating light conductor 11 can by by
Light is expeditiously received with light conductor 12.
In the present embodiment, illuminating light conductor 11, light light conductor 12 and display lamp light conductor 13 are
Transparent glass system.Glass used herein above is not particularly limited, but requires refractive index in terms of light is closed
Optical glass bigger than the refractive index of resin described later or that refractive index is 1.6~1.7.If refractive index be 1.7 with
On, then the light propagated in glass progress closing is become easier to, the loss of light quantity can be reduced, therefore preferably.If on
The refractive index for stating glass is smaller than the refractive index of resin described later, then light is outwards spilt, and can not carry out leaded light well.It is used as folding
Penetrating the big glass of rate has the dense flint glass of optical glass, and sapphire glass can also in addition.
The top ends of display lamp light conductor 13 are passed through through the hole 15 of housing 1 and can recognized from outside.It is embedding in hole 15
Enter to have the transparent resin cover 16 of the top ends of protection display lamp light conductor 13.
Resin 14 is filled with space in the housing 1 for accommodating printed circuit board (PCB) 5 and being separated by dividing plate 10.The resin
14 meet the regulation of the UL746B of UL standards continuous operating temperature COT (high temperature).Due to setting for security printing circuit board 5
Meter temperature be set as less than 100 DEG C, it is advantageous to by the continuous operating temperature COT of resin 14 be set to more than 100 DEG C and 150 DEG C with
Under.Polyurethane resin, epoxy resin, silicone resin etc. can be enumerated as resin 14, as long as meet above-mentioned continuous work temperature
Degree COT resin then can be selected suitably.
Here, UL746B is the standard for the long-term physical property (heat resistance) for evaluating material, continuous operating temperature COT refers to inciting somebody to action
Material placed in the air of certain temperature 40000 it is small in the case of, the physics value of the material is deteriorated to the 50% of initial value
The certain temperature.
In the circuit of printed circuit board (PCB) 5, Thermal Cutoffs is connected in series in the position near the input of power line.It is logical
Excess temperature fuse can prevent the temperature of printed circuit board (PCB) 5 from exceeding design temperature due to the heating of electronic unit.In addition, logical
Cross and the fusing temperature of Thermal Cutoffs is set to more than 70 DEG C and less than 110 DEG C, so as to make the temperature of printed circuit board (PCB) 5 not surpass
Cross the continuous operating temperature COT for the resin 14 being filled.By Thermal Cutoffs, resin 14 maintains the defined spy in design
Property, it is able to maintain that the explosion-proof performance of photoelectric smoke sensor.
Show appropriate hardness in the selection of resin 14, it is considered to can promptly be filled when assembling, and after solidifying and
The stress (stress) for the electric part of covering can be relaxed.By the such resin 14 of selection, so as to improve electric portion
The reliability of part and printed circuit board (PCB) 5.
Viscosity (cooperation viscosity) during the filling of preferred resin 14 is 50~5000mPas.If viscosity is less than
50mPas, then resin excess flow and operation when filling becomes difficult.On the other hand, in viscosity more than 5000mPas
When, due to sufficiently flowing can not be obtained so producing the bad risk increase of filling.
In addition, viscosity particularly preferably is set into 500~4000mPas.Can be by the resin before filling thereby, it is possible to take into account
The handling easiness when mobility of 14 abundant deaerations and filling.As a result, resin 14 and electric part and printed circuit board (PCB) 5 are abundant
Ground is closely sealed, can prevent the intrusion of gas.
On deaeration, by X Line CT scanners, (Comscantecno Co., Ltd. manufactures, ScanXmate-
D225RSS270 [detectors：Flat panel detector pattern]) confirm without the diameter bubble bigger than 200 μm.In addition, bubble is smaller
It is more preferred, it preferably there is no the diameter bubble bigger than 20 μm.In addition, further preferably meeting explosive atmosphere standard
IEC60079-18:2014。
Thus, resin 14 is closely sealed in electric part and printed circuit board (PCB) 5 securely, will not be cracked in resin 14, resin
14 will not peel off from electric part, printed circuit board (PCB) 5.That is, gap is not formed in resin 14, is also invaded without gas.Accordingly, it is capable to
The enough high temperature produced when spark, failure caused by by short-circuit (short) covers electric part and printing in the way of being surely closed off
Circuit board 5.Further, since the invasion without gas, so can also prevent electric part, printing electricity caused by corrosive gas
The deterioration of road plate 5.
" Xiao A hardness " of resin 14 after solidification is preferably 10~70 (test method(s) JIS-K6253:Room temperature).Less than
When 10, enough intensity can not be obtained due to excessively soft when applying impact to housing, so housing 1 has the risk of breakage.It is another
Aspect, when more than 70, because the resin 14 of filling is really up to the mark, so can apply stress to electric part, printed circuit board (PCB) 5, having can
The reason for failure being turned into.
The temperature in housing 1 can be made uniform when the pyroconductivity of the resin 14 after filling is more than 0.1W/ (mK), because
This is preferred.When less than 0.1W/ (mK), it is impossible to make the heat of the electric part of heating fully uniform, it is impossible to be discharged into the heat
It is outside.
According to the photoelectric smoke sensor of present embodiment, due to being separated by dividing plate 10 and accommodating printed circuit board (PCB)
Space in 5 housing 1 is filled with resin 14, so printed circuit board (PCB) 5 is capped in the state of embedment resin 14.Therefore,
Dust, insect etc. and the contact of the electric part on printed circuit board (PCB) 5 can be entirely prevented.Further, since gas will not be invaded
Enter to around printed circuit board (PCB) 5, so the height produced when spark, failure caused by short-circuit (short) can be avoided reliably
Temperature is contacted with gas.Further, since the intrusion without gas, so electric part, printing caused by corrosive gas can be prevented
The deterioration of circuit board 5.And then, because the heat that can produce electric part is spread by the resin of filling, so housing 1 can be made
Interior temperature is uniform, it is possible to increase the life-span of electric part, reliability.
And then, the printed circuit board (PCB) 5 being capped in the state of embedment resin 14 is provided with：Through dividing plate 10 and will be luminous
The light of element 2 is guided to the illuminating light conductor 11 in darkroom 7 and guided through dividing plate 10 and by light from darkroom 7 to light member
The light of part 3 light conductor 12.Therefore, it is possible to the presence or absence of scattering of light in darkroom, degree are detected and reliably
Detect smog.
In addition, in the present embodiment, because illuminating light conductor 11, light are with light conductor 12 and display lamp light conductor
13 be glass system, so can make illuminating light conductor 11, light light conductor 12 and display lamp light conductor 13 and setting
Directly contact to install in the light-emitting component 2, photo detector 3 and display lamp 4 of printed circuit board (PCB) 5.Therefore, it is possible to by light-emitting component
2 light is to reliably guided in darkroom 7 by illuminating light conductor 11.Furthermore it is possible to which the light of the scattering in darkroom 7 is passed through
Light light conductor 12 is to reliably guided to photo detector 3.And then, can be by the luminous guide-lighting by display lamp of display lamp 4
Body 13 is to reliably guided to outside housing 1.Display lamp 4 is lighted to represent that photoelectric smoke sensor works.
In the present embodiment, in order to obtain the performance of blast resistance construction, it is not resin-made but resistance to make light conductor 11~13
The good glass system of fire.Therefore, it is possible to make as described above light conductor 11~13 respectively with light-emitting component 2, photo detector 3,
And display lamp 4 is directly contacted.However, being the general resinous situation such as makrolon, acrylic acid in light conductor 11~13
Under, heat resisting temperature is low, in order to obtain the performance of blast resistance construction, it is impossible to make light conductor 11~13 and light-emitting component 2, photo detector 3
And display lamp 4 is directly contacted, it is necessary to vacate interval between them.Therefore, it may occur that light loss, in order to obtain sufficient property
Can, it is necessary to utilize more expensive light-emitting component 2, photo detector 3 and display lamp 4.
Especially by the outboard end that display lamp light conductor 13 is covered with resin cover 16, so as to make from display
The display light of lamp 4 spreads and improves identification.And then, photoelectric smoke sensor is applied impact when, because impact can be with
Relaxed by resin cover 16, so display lamp light conductor 13 can be made from breakage.Particularly preferred structure is resin-made
Cover 16 is located at the inner side of the end face (bottom surface) of housing 1, from the viewpoint of impact resistance, preferably not prominent from end face (bottom surface).
In addition, by the way that resin cover 16 is made into bullet cut, being improved so as to make the display light from display lamp 4 further spread
Identification.
Industrial applicability
The present invention can be applied to be arranged on the automatic fire-alarm system of the building, plant facilities, ship in building etc.
Photoelectric smoke sensor.It is further possible to suitable for the presence sulphur gas of Hot Spring Area, electroplating facility, paper mill, change
Learn the photoelectric smoke sensor of the environment of the presence corrosive gas of medicine factory, metallurgical works etc..
Description of reference numerals
1：Housing；
2：Light-emitting component；
3：Photo detector；
4：Display lamp；
5：Printed circuit board (PCB)；
6：Labyrinth body；
7：Darkroom；
8：Bolt；
9：Mounting bracket；
10：Dividing plate；
11：Illuminating light conductor；
12：Light light conductor；
13：Display lamp light conductor；
14：Resin；
15：Hole；
16：Resin cover.
Claims (6)
1. a kind of photoelectric smoke sensor, it has in housing：Printed circuit board (PCB), it is configured with light-emitting component and light member
Part；And darkroom, it is surrounded by labyrinth body, is arranged on the light-emitting component and the photo detector quilt of the printed circuit board (PCB)
It is configured in the darkroom, the presence or absence of scattering of light in the darkroom, degree is detected and smog is detected, institute
Photoelectric smoke sensor is stated to be characterised by,
In the housing, the printed circuit board (PCB) and the darkroom are separated by dividing plate,
It is provided with the printed circuit board (PCB)：Illuminating light conductor, it through the dividing plate and draws the light of the light-emitting component
It is directed at the darkroom；And light light conductor, it through the dividing plate and guides light to light member from the darkroom
Part,
Resin is filled with being separated by the dividing plate and accommodating the space in the housing of the printed circuit board (PCB).
2. photoelectric smoke sensor as claimed in claim 1, it is characterised in that
The illuminating light conductor and the light are glass systems with light conductor,
The illuminating light conductor and the light-emitting component are in contact with each other, and/or, the light light conductor and it is described by
Optical element is in contact with each other.
3. photoelectric smoke sensor as claimed in claim 1 or 2, it is characterised in that
The resin meets the regulation of the UL746B of UL standards continuous operating temperature COT (high temperature).
4. such as photoelectric smoke sensor according to any one of claims 1 to 3, it is characterised in that
In the circuit of the printed circuit board (PCB), Thermal Cutoffs is connected in series with the power line.
5. such as photoelectric smoke sensor according to any one of claims 1 to 4, it is characterised in that
The housing is formed by the resin for meeting the UL94 of the UL standards V-0 standards on anti-flammability.
6. such as photoelectric smoke sensor according to any one of claims 1 to 5, it is characterised in that
The resin has in embedment in the state of the printed circuit board (PCB), does not contain the diameter bubble bigger than 200 μm.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016014775 | 2016-01-28 | ||
| JP2016-014775 | 2016-01-28 | ||
| JP2017-000063 | 2017-01-04 | ||
| JP2017000063A JP6771392B2 (en) | 2016-01-28 | 2017-01-04 | Photoelectric smoke detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107016815A true CN107016815A (en) | 2017-08-04 |
Family
ID=59440238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710046252.1A Pending CN107016815A (en) | 2016-01-28 | 2017-01-22 | Photoelectric smoke sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107016815A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111684586A (en) * | 2018-01-31 | 2020-09-18 | 纳诺卢门斯收购公司 | Illuminated display system with improved fire performance |
| CN112313720A (en) * | 2018-06-19 | 2021-02-02 | 瓦格纳集团责任有限公司 | Scattered light detector and aspirating fire detection system with scattered light detector |
| CN112439276A (en) * | 2020-11-04 | 2021-03-05 | 王建 | Smoke inductor is used to workshop safety |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS638538A (en) * | 1986-06-27 | 1988-01-14 | Matsushita Electric Ind Co Ltd | Smoke detectors |
| JPH07103892A (en) * | 1993-09-30 | 1995-04-21 | Matsushita Electric Works Ltd | Photoelectric smoke detector |
| CN1305100A (en) * | 1999-11-01 | 2001-07-25 | 报知机株式会社 | Photoelectric smoke detector and smoke detector parts |
| CN101294899A (en) * | 2007-03-07 | 2008-10-29 | 夏普株式会社 | Photoelectric smoke sensor and lighting equipment |
| CN101713733A (en) * | 2008-10-01 | 2010-05-26 | 能美防灾株式会社 | Photoelectric smoke sensor |
| CN102192897A (en) * | 2010-02-02 | 2011-09-21 | 精工爱普生株式会社 | Particle detector |
| CN103210431A (en) * | 2010-09-14 | 2013-07-17 | Finsecur公司 | Smoke detection circuit, smoke detector comprising said circuit and alarm device comprising both the circuit and the detector |
| CN103999135A (en) * | 2012-08-31 | 2014-08-20 | 日本芬翁股份有限公司 | Luminous parts, photoelectric smoke detectors, and aspirating smoke sensing systems |
-
2017
- 2017-01-22 CN CN201710046252.1A patent/CN107016815A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS638538A (en) * | 1986-06-27 | 1988-01-14 | Matsushita Electric Ind Co Ltd | Smoke detectors |
| JPH07103892A (en) * | 1993-09-30 | 1995-04-21 | Matsushita Electric Works Ltd | Photoelectric smoke detector |
| CN1305100A (en) * | 1999-11-01 | 2001-07-25 | 报知机株式会社 | Photoelectric smoke detector and smoke detector parts |
| CN101294899A (en) * | 2007-03-07 | 2008-10-29 | 夏普株式会社 | Photoelectric smoke sensor and lighting equipment |
| CN101713733A (en) * | 2008-10-01 | 2010-05-26 | 能美防灾株式会社 | Photoelectric smoke sensor |
| CN102192897A (en) * | 2010-02-02 | 2011-09-21 | 精工爱普生株式会社 | Particle detector |
| CN103210431A (en) * | 2010-09-14 | 2013-07-17 | Finsecur公司 | Smoke detection circuit, smoke detector comprising said circuit and alarm device comprising both the circuit and the detector |
| CN103999135A (en) * | 2012-08-31 | 2014-08-20 | 日本芬翁股份有限公司 | Luminous parts, photoelectric smoke detectors, and aspirating smoke sensing systems |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111684586A (en) * | 2018-01-31 | 2020-09-18 | 纳诺卢门斯收购公司 | Illuminated display system with improved fire performance |
| CN112313720A (en) * | 2018-06-19 | 2021-02-02 | 瓦格纳集团责任有限公司 | Scattered light detector and aspirating fire detection system with scattered light detector |
| CN112439276A (en) * | 2020-11-04 | 2021-03-05 | 王建 | Smoke inductor is used to workshop safety |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5771760B1 (en) | Photoelectric smoke detector | |
| CN107016815A (en) | Photoelectric smoke sensor | |
| CN101894442B (en) | Fire alarm | |
| US20090284381A1 (en) | Explosion indicator for explosion-proof enclosures | |
| CN108140293B (en) | Photoelectric smoke sensor | |
| US20100039256A1 (en) | Explosion Indicator For Explosion-Proof Enclosures | |
| US20120198931A1 (en) | Explosion-proof device | |
| CN108291824B (en) | Explosion-proof housings for devices for transmitting and receiving electromagnetic radiation | |
| US9267686B1 (en) | Apparatus and method for monitoring flares and flare pilots | |
| US20090158992A1 (en) | Explosion Indicators For Use In Explosion-Proof Enclosures With Critical Equipment | |
| CN105931418A (en) | Explosion-proofing infrared UV flame detector | |
| KR102554162B1 (en) | Photoelectric smoke detector | |
| WO2022010483A1 (en) | Sensor assembly for temperature measurement | |
| JP5132366B2 (en) | Thermal smoke combined fire detector | |
| EP2881719B1 (en) | Detecting of sparks | |
| KR102670321B1 (en) | Fire detector | |
| US8878683B2 (en) | Light receiver device having a shielding device extending on a back side of a substrate | |
| US20100097235A1 (en) | Explosion Proof Non-Contact Check Point to Mount in Explosion Proof Enclosure | |
| EP1630475A1 (en) | A construction of an illuminator | |
| KR20230152260A (en) | fire sensor tester with portable | |
| GB2391622A (en) | Protecting gas sensors from condensation | |
| CN117791224A (en) | Intelligent catheter plug | |
| JP6533482B2 (en) | Communication device protection case and method of measuring utility of communication device protection case | |
| Fotău et al. | Aspects regarding the surface temperature for luminaires used in potentially explosive atmosphere | |
| NUSSBAUM et al. | 7.8 Flame, Fire, and Smoke Detectors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170804 |