CN1145126C - Composite sensor - Google Patents
Composite sensor Download PDFInfo
- Publication number
- CN1145126C CN1145126C CNB011117273A CN01111727A CN1145126C CN 1145126 C CN1145126 C CN 1145126C CN B011117273 A CNB011117273 A CN B011117273A CN 01111727 A CN01111727 A CN 01111727A CN 1145126 C CN1145126 C CN 1145126C
- Authority
- CN
- China
- Prior art keywords
- outer cover
- light
- smog chamber
- smog
- insertion portion
- 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.)
- Expired - Fee Related
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/18—Prevention or correction of operating errors
- G08B29/183—Single detectors using dual technologies
-
- 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
-
- 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
- G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
- G08B17/113—Constructional details
Abstract
A multi-sensor comprises: a smoke chamber for sensing smoke by detecting a scattered light with a light detecting portion, the scattered light being generated by the smoke which enters the smoke chamber to scatter a light emitted from a light emitting portion; a heat sensing element for sensing heat, which is provided above the smoke chamber; and an insert portion which constitutes a wall body having a hole for inserting a wire of the heat sensing element; wherein the wall body is approximately consecutive from an upper surface of an inside of the smoke chamber to a lower surface of an inside of the smoke chamber, and the hole penetrates through the upper surface to the lower surface, to an outside of the smoke chamber.
Description
Technical field
The present invention relates to respond to the compound sensor of (detection) flame by smog and temperature.
Background technology
Early to know a kind of compound sensor, it as thermistor or similar elements, comes temperature sensor by thermal sensing element, and survey scattered light by photo-sensitive cell and respond to smog, this scattered light is to carry out scattering by the light with a light-emitting component emission to produce.
In this compound sensor, because thermal sensing element can detect the ascending air stream that is caused by flame delicately, so thermal sensing element must be arranged in the top (that is, when compound sensor installed on the ceiling, thermal sensing element was arranged in the bottom side of compound sensor) of compound sensor.On the other hand, because the bottom that the wiring board of processing signals is contained in sensor in sensor (promptly, when compound sensor installed on the ceiling, wiring board was arranged in the upside of compound sensor), so must provide a lead that thermal sensing element and wiring board are coupled together.
Formed a smoke sensing district between the top of sensor and the wiring board, the optical axis of light-emitting component and the optical axis of photo-sensitive cell intersect therein.Therefore, arrange the lead that connects thermal sensing element and wiring board, to avoid the smoke sensing district.For example, in the flat 4-268697 of day disclosure special permission communique No., just be presented in the smoke sensing district maze portion on every side and be provided with a through hole, so that lead passes this through hole.
Yet such wire structures will spend a lot of times to assemble sensor during fabrication, and when safeguarding after installation, also will spend a lot of times to take or assemble sensor apart.Though proposed lead is placed on the method for sensor outside, for above-mentioned reasons, this method is inappropriate.
In day disclosure special permission flat 10-40476 of communique No. and the flat 11-185179 of No., disclose a kind of lead and passed to avoid the compound sensor in smoke sensing district from sensor internal.
Yet, when lead when sensor internal passes, the reflected light that produces in conductive line surfaces is detected by photo-sensitive cell as stray light.Therefore, the sensitivity of surveying smog will reduce.Especially in each compound sensor, by cover the lead that barras is made on plain conductor, its surface configuration is slightly different.Because the quantity of the stray light that is produced is different according to lead, so the problem that exists each compound sensor detection sensitivity to change.
In addition, if as above-mentioned disclosing, arrange lead, will there be the problem of heat sensitivity to certain specific direction skew to avoid the smoke sensing district.
Summary of the invention
In order to address the above problem, the purpose of this invention is to provide a kind of compound sensor of assembling of being easy to during fabrication, and also be easy to take apart or assemble when after installation, it being safeguarded, and can arrange lead and make and influence the detection sensitivity or the direction of sensor hardly.
Compound sensor (sensor 1) according to one aspect of the invention comprising:
One is leaned on sensitization part (13) to survey the smog chamber (S) that scattered light is responded to smog, and this scattered light is owing to smog enters the smog chamber light scatter of sending from light-emitting component (12) to be produced;
One is used for the thermal sensing element (thermistor 10) of temperature sensor, and it is contained in the top of smog chamber; With
An insertion portion that constitutes structural walls, it has a hole (through hole 14a) to be used for inserting the lead (lead 10a) of thermal sensing element (thermistor 10);
Wherein, structural walls roughly is continuous from upper surface to the lower surface of inside, smog chamber, and the hole also penetrates into lower surface from upper surface, leads to the outside of smog chamber.
According to the present invention, because the lead of thermal sensing element passes the through hole of the insertion portion that constitutes structural walls, wherein, structural walls roughly is continuous from upper surface to the lower surface of inside, smog chamber, the hole also penetrates into lower surface from upper surface, lead leads to the outside of smog chamber, so can pass the inside of smog chamber under the state that is inserted into the part covering.
As a result, when the assembling compound sensor, only need lead is passed the wiring that insertion portion just can be finished thermal sensing element.Insertion portion has served as the guide body of pack into thermal sensing element and definite its position.Therefore, compound sensor is easy to assembling during fabrication, and also is easy to take apart or assemble when safeguarding.
Because the lead in the smog chamber does not expose, so the surface of lead can not produce stray light.Therefore, the stray light that produces on each compound sensor can be together.The flame detecting performance of each compound sensor becomes stable.
When insertion portion is when making with animi resin, the surface configuration of insertion portion changes very little.Although the light that light reflects and reflects has become stray light, also can not cause the different problem of flame detecting performance of each compound sensor on the surface of insertion portion.
In this manual, term " above the smog chamber " is meant top one side of smog chamber,, is contained in the downside of the compound sensor on the ceiling that is.
Term " structural walls roughly is continuous from upper surface to the lower surface of inside, smog chamber " may not refer to that structural walls is totally continuous from upper surface to the lower surface in inside, smog chamber.The continuity that structural walls had be guide line in the smog chamber be not expose and do not produce stray light.
In the smog chamber, can adorn the shadow shield that lastblock shelters from sensitization part, it make the sensitization part can not direct detection to the light that sends from luminous component, and
Insertion portion can be used the part of shadow shield at least.
Because the insertion portion that is used for passing the thermal sensing element lead is used the part of shadow shield at least, insertion portion is contained in the place near smog chamber central authorities.Therefore the sensitivity of thermal sensing element can be to certain specific direction skew.Just might survey flame with same sensitivity in all directions.
Term " insertion portion is used the part of shadow shield at least " comprises that such situation, the part of shadow shield are used as structural walls and serve as insertion portion.
Shadow shield can be made drum, and serves as insertion portion.
Because this compound sensor has utilized the shadow shield in the sensor of former development, so the number of part does not increase.
This compound sensor may further include:
A fixture (supporting mass 11) that is used for fixing sensitization part and luminous component; With
An outer cover (labyrinth body 4), it has the structure that can prevent that light from entering the smog chamber from the side of outer cover, and one of them of outer cover upper surface and lower surface opened wide;
Wherein, be contained in luminous component on the retaining element and sensitization part from the open surfaces of outer cover is packed outer cover into, the smog chamber is served as in the inside of outer cover; And
The structural walls and the retaining element that constitute insertion portion are combined into one.
Because insertion portion and fixture combine, so this compound sensor is easy to assembling.In addition, because there is not the space between insertion portion and fixture, extraneous light almost can not enter the smog chamber.
This compound sensor also comprises:
A fixture (supporting mass 11) that is used for fixing sensitization part and luminous component; With
An outer cover (labyrinth body 4), it has the structure that can prevent that light from entering the smog chamber from the side of outer cover, and one of them of outer cover upper surface and lower surface opened wide;
Wherein, be contained in luminous component on the fixture and sensitization part from the open surfaces of outer cover is packed outer cover into, the smog chamber is served as in the inside of outer cover; And
Constitute the structural walls of insertion portion and a surface combination of outer cover and get up, this surface is positioned at the opposite of outer cover open surfaces.
Because a surface combination of insertion portion and outer cover together, so this compound sensor is easy to assembling.In addition, because there is not the space between insertion portion and outer cover, extraneous light almost can not enter the smog chamber.
For a kind of " can prevent that light from entering the structure of smog chamber ", known to everybody maze-type structure or similar structure arranged.Yet any structure that can prevent that light from entering the smog chamber can adopt.
With reference to the detailed description and the accompanying drawing that hereinafter provide, can understand the present invention more fully, accompanying drawing is the legend of property as an illustration just, thereby does not plan to be used for limiting scope of the present invention, wherein;
Description of drawings
Fig. 1 is the sensor part decomposition diagram according to compound sensor embodiment of the present invention;
Fig. 2 is the vertical sectional view when each part is combined to sensor in the displayed map 1; And
Fig. 3 is the horizontal cross that shows body inside, labyrinth.
Embodiment
Explain one embodiment of the present of invention in detail below with reference to Fig. 1 to 3.
Fig. 1 shows each part that constitutes a sensor 1, and this sensor is as an example according to compound sensor of the present invention.Fig. 2 is a vertical cross section, and it shows when each part among Fig. 1 and is incorporated into situation in the sensor.
In Fig. 1 and 2, reference number 2 expression header fields, 3 expression main body outer covers, 4 expression labyrinth bodies, 5 expression fly nets, 6 expression protective covers, 7 expression optical element parts, 8 expression wiring boards, 9 expression bases and 10 expression thermistors.Fig. 3 is a horizontal sectional drawing, and it shows the inside of labyrinth body 4.
Main body outer cover 3 is outer covers that are used for covering labyrinth body 4 grades.In the central authorities of main body outer cover 3, be an opening 3a.Projection 3b is around opening 3a.In main body outer cover 3, be provided with the air admission hole 3c, the 3c... that along the circumferential direction arrange, so that allow flue gas flow among the S of smog chamber.
As shown in Figure 2, the lower part in main body outer cover 3 inside has several being used for that main body outer cover 3 is fixed to joint clamp 3f on the base 9.In Fig. 2, only demonstrate a joint clamp.
Topped on the surface of labyrinth body (housing) 4 have a video disc shape plate 4d.In labyrinth body 4, there are many cross sections to make the shading wall 4a of Z-shaped, M shape or analogous shape, also have a container 4b and a container 4c who is used for holding sensitization part 13 who is used for holding luminous component 12 (will explain hereinafter), they are all on precalculated position separately.In the present embodiment, the container part 4c that holds the container 4b of luminous component 12 and hold sensitization part 13 is provided in a side of in the labyrinth body 4.Yet, in the time of in they are located at protective cover 6, also can play the effect of shielding luminous component 12 and sensitization part 13.In labyrinth body 4 by shading wall 4a, 4a ... and the S of smog chamber is served as in the zone that surrounded of container 4b and 4c.
At the center of plate 4d, be provided with a wire guide 4e, be the lead 10a that is used for inserting thermistor 10.
By labyrinth body 4, the main body of flowing through outer cover 3 air admission hole 3c, 3c ... outside flue gas be introduced among the S of smog chamber.On the other hand, labyrinth body 4 can prevent that extraneous light from entering among the S of smog chamber.
The periphery of labyrinth body 4 is fly nets (insect protected screen) 5 that many fine mesh are arranged.Fly net 5 prevents that insect and similar animal from entering in the labyrinth body 4.
As shown in Figure 2, protective cover 6 is used for covering the upper surface of wiring board 8.At the center of protective cover 6, a hole 6a for the supporting mass use is arranged, the supporting mass 11 of optical element part 7 is installed in hole 6a.
With a clamp protective cover 6 is fixed on the base 9, clamp does not illustrate in the drawings.
(but not shown in Figure 1) as shown in Figure 3, at the upper surface of protective cover 6, the several limiting plate 6d, 6d, 6d and the 6d that are provided with the limited wall 6e of an annular and protrude above it are so that limit the position of placing labyrinth body 4.
Optical element part 7 comprises a supporting mass (fixture) 11 and is contained in luminous component 12, sensitization part 13 and shadow shield 14 above it.Luminous component 12 comprises light-emitting component (not illustrating in the drawings), can be luminous regularly under the control of wiring board 8.On the other hand, sensitization part 13 comprises a photo-sensitive cell (not illustrating in the drawings), can be to wiring board 8 transmission photoreceptor signals.
The light-emitting component by will being contained in the luminous component 12 on the supporting mass 11 and the photo-sensitive cell of sensitization part 13 are welded on the wiring board 8, and optical element part 7 is connected in the sensor 1.Luminous component 12 is comprised among the container part 4b of labyrinth body 4.Sensitization part 13 is comprised among the container part 4c.Shadow shield 14 is installed among the S of smog chamber of labyrinth body 4 with direction up and down.
On wiring board 8, be provided with the default electronic circuit (not illustrating in the drawings) of control sensor 1 operation.Light-emitting component and photo-sensitive cell are connected on the wiring board 8.The lead 10a of thermistor 10 is connected to the core of wiring board 8 upper surfaces.
As shown in Figure 2, wiring board 8 usefulness screws 15 and 15 are fixed on the base 9.
As shown in Figure 1, base 9 is dishes.Base 9 has constituted the outer cover lower part of sensor 1.At the reverse side of base 9, be provided with by base 9 being connected to the mounting seat (not illustrating in the drawings) that is pre-installed on the ceiling sensor is installed to bonding part on the ceiling.
Peripheral part at base 9 is provided with several groove 9a (only showing a groove in Fig. 2), so that the coaptation splint 3f on the corresponding main body outer cover 3.
Each part with said structure is according to following arranging of introducing, and as shown in Figure 2, wiring board 8, optical element part 7 and protective cover 6 are contained on the base 9.Labyrinth body 4 be fixed on protective cover 6 above, the position of adjusting labyrinth body 4 makes the luminous component 12 that protrudes into protective cover 6 upper surfaces be comprised among the container 4b and sensitization part 13 is comprised among the container part 4c.By several coaptation splint 3f of main body outer cover 3 being joined to the respective slot 9a of base 9, main body outer cover 3 is fixed on the base 9.Header field 2 is fixed on the main body outer cover 3.The lead 10a of the thermistor 10 that links to each other with wiring board 8 passes the wire guide 4e of through hole 14a and labyrinth body 4.The assembling of sensor 1 will make thermistor 10 be installed among the temperature-sensitive zone T of header field 2.
In the superincumbent sensor 1, the lead 10a of thermistor 10 passes the shadow shield 14 through hole 14a that are combined into one with supporting mass 11.Therefore, lead 10a can pass the inside of the S of smog chamber under the state that is covered by shadow shield 14.
As a result, in assembling during sensor 1,, just can simplify so arrange the operation of lead in order to avoid the smoke sensing district because lead 10a just passes through hole 14a.In addition, through hole 14a has served as the guide way of thermistor 10 being installed and being determined its position.Therefore, when making compound sensor, be easy to assembling, and when it is safeguarded, also be easy to take apart or assemble.
Because the lead in the S of smog chamber does not expose, so can not produce stray light from the surface of lead.Therefore, the stray light that produces on each compound sensor can be together.The flame detecting performance of each compound sensor becomes stable.
Because shadow shield 14 usefulness animi resin are made, so the variation of the surface configuration of each shadow shield is very little.Although the light that light reflects and reflects has become stray light, also can not produce the different problem of flame detecting performance of each compound sensor on the surface of shadow shield 14.
Because through hole 14a forms with shadow shield 14, so lead 10a can pass in the part of the approximate center of the S of smog chamber.Therefore the sensitivity of thermistor 10 can be to certain specific direction skew.Might survey flame with same sensitivity in all directions.Because sensor 1 has utilized the shadow shield in the sensor of former development, so although through hole 14a forms in shadow shield, the number of part does not increase.
Because shadow shield 14 combines with supporting mass 11, so sensor 1 is easy to assembling.In addition, because do not have the space between supporting mass 11 and shadow shield 14, extraneous light can not enter the S of smog chamber.
Compound sensor according to the present invention is not limited to above embodiment.Under the situation that does not deviate from main points of the present invention, the concrete structure of each part, shape etc. can be done suitable modification.For example, shadow shield can lump together with hardening of labyrinth body.
According to the present invention, because the lead of thermal sensing element passes the insertion portion that constitutes structural walls, structural walls roughly is continuous from upper surface to the lower surface of inside, smog chamber, and top porose in order to insert the lead of thermal sensing element.Wherein, the hole penetrates into lower surface from upper surface, arrives the outside of smog chamber, so lead can pass the inside of smog chamber under the state that is inserted into the part covering.
As a result, when the assembling compound sensor, only need lead is passed the wiring that insertion portion just can be finished thermal sensing element.Insertion portion has served as the fairlead that installs thermal sensing element additional and determine its position.Therefore, when making compound sensor, can be easy to assembling, and when safeguarding, also be easy to take apart or assemble.
Because the lead in the smog chamber does not expose, so can not produce stray light from the surface of lead.Therefore, the stray light that produces on each compound sensor can be together.The flame detecting performance of each compound sensor becomes stable.
When insertion portion is when making with animi resin, the variation of the surface configuration of insertion portion is very little.Although the light that light reflects and reflects has become stray light, also can not produce the different problem of flame detecting performance of each compound sensor on the surface of insertion portion.
Because the insertion portion that is used for passing the thermal sensing element lead is used the part of shadow shield at least, insertion portion is contained in the place near the center, smog chamber.Therefore the sensitivity of thermal sensing element can be to certain specific direction skew.Just might survey flame with same sensitivity in all directions.
Because this compound sensor has utilized the shadow shield in the sensor of former development, so the number of part does not increase.
Because insertion portion and fixture combine, so this compound sensor is easy to assembling.In addition, because there is not the space between insertion portion and retaining element, extraneous light almost can not enter the smog chamber.
Because insertion portion and outer cover combine, so this compound sensor is easy to assembling.In addition, because there is not the space between insertion portion and outer cover, extraneous light almost can not enter the smog chamber.
Claims (5)
1. a compound sensor comprises:
One is leaned on sensitization partly to survey the smog chamber that scattered light is responded to smog, and described scattered light is owing to smog enters described smog chamber the light scatter of sending from light-emitting component to be produced;
A thermal sensing element that is used for temperature sensor, it be contained in described smog chamber the top and
An insertion portion that constitutes structural walls has a through hole in order to insert the lead of described thermal sensing element;
Wherein said structural walls roughly is continuous from upper surface to the lower surface of inside, described smog chamber, and described through hole also penetrates into lower surface from upper surface, leads to the outside of described smog chamber.
2. according to the compound sensor described in the claim 1, it is characterized in that, a shadow shield that shelters from the sensitization part is housed in the described smog chamber, it make described sensitization part can not direct detection to the light that sends from described luminous component, and described insertion portion utilizes at least a portion of described shadow shield.
3. according to the compound sensor described in the claim 2, it is characterized in that described shadow shield is made drum, and be used as described insertion portion.
4. according to each the described compound sensor in the claim 1 to 3, also comprise:
A fixture that is used for fixing described sensitization part and described luminous component; With
An outer cover has a kind of light that can prevent and enters the structure of described smog chamber from the side of described outer cover; The upper surface of described outer cover and one of them of lower surface are opened wide;
Wherein, be fixed on described luminous component on the fixture and described sensitization part from the open surfaces of described outer cover is packed described outer cover into, described smog chamber is served as in the inside of described outer cover; And the described structural walls and the described fixture that constitute described insertion portion are combined into one.
5. according to each the described compound sensor in the claim 1 to 3, also comprise:
A fixture that is used for fixing described sensitization part and described luminous component; With
An outer cover has the structure that can prevent that light from entering described smog chamber from the side of described outer cover, and one of them of described outer cover upper surface and lower surface opened wide;
Wherein, be fixed on described luminous component on the described fixture and described sensitization part from the open surfaces of described outer cover is packed described outer cover into, described smog chamber is served as in the inside of described outer cover; With
Constitute the described structural walls of described insertion portion and a surface combination of described outer cover and be integral, described surface is positioned at the opposite face of the open surfaces of described outer cover.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000076718A JP3902377B2 (en) | 2000-03-17 | 2000-03-17 | Combined thermal smoke sensor |
| JP76718/2000 | 2000-03-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1314664A CN1314664A (en) | 2001-09-26 |
| CN1145126C true CN1145126C (en) | 2004-04-07 |
Family
ID=18594413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011117273A Expired - Fee Related CN1145126C (en) | 2000-03-17 | 2001-03-16 | Composite sensor |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1146492B1 (en) |
| JP (1) | JP3902377B2 (en) |
| CN (1) | CN1145126C (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2397122B (en) * | 2003-01-03 | 2006-02-08 | David Appleby | Fire detector with low false alarm rate |
| KR100983539B1 (en) * | 2008-03-07 | 2010-09-27 | 지멘스신화주식회사 | Smoke alarm |
| JP5135140B2 (en) * | 2008-09-19 | 2013-01-30 | ニッタン株式会社 | Flame detector |
| JP5508912B2 (en) * | 2010-03-17 | 2014-06-04 | 能美防災株式会社 | Thermal smoke combined fire detector |
| GB201006683D0 (en) | 2010-04-21 | 2010-06-09 | Fireangel Ltd | Smoke alarm |
| GB201006682D0 (en) * | 2010-04-21 | 2010-06-09 | Fireangel Ltd | Co-9x optical alarm |
| JP5484219B2 (en) * | 2010-06-30 | 2014-05-07 | ニッタン株式会社 | Combined thermal smoke sensor |
| WO2016186884A1 (en) * | 2015-05-15 | 2016-11-24 | Google Inc. | Smoke detector chamber architecture and related methods |
| CN106056830B (en) * | 2016-06-20 | 2019-01-08 | 四川赛科安全技术有限公司 | A kind of labyrinth of optical detector of fire smoke |
| CN106228740A (en) * | 2016-08-15 | 2016-12-14 | 许昌初心智能电气科技有限公司 | A kind of smoke alarm labyrinth and use the smoke alarm in this labyrinth |
| CN106355820B (en) * | 2016-10-25 | 2018-09-28 | 上海松江飞繁电子有限公司 | A kind of smog fire-alarm |
| JP7280025B2 (en) * | 2018-09-18 | 2023-05-23 | ホーチキ株式会社 | fire detection device |
| WO2019189128A1 (en) * | 2018-03-28 | 2019-10-03 | ホーチキ株式会社 | Fire detection device |
| JP7227716B2 (en) * | 2018-08-31 | 2023-02-22 | ホーチキ株式会社 | fire detection device |
| CN111292500B (en) * | 2018-12-07 | 2022-02-08 | 杭州海康消防科技有限公司 | Smoke-sensitive fire detection alarm |
| JP7286386B2 (en) | 2019-04-08 | 2023-06-05 | ニッタン株式会社 | flame detector |
| US11145176B1 (en) | 2020-03-19 | 2021-10-12 | Carrier Corporation | Photoelectric smoke detectors |
| US11790746B2 (en) | 2021-02-02 | 2023-10-17 | Carrier Corporation | Smoke entry solution for multi wave multi angle safety device |
| CN114241708A (en) * | 2021-12-14 | 2022-03-25 | 杭州海康消防科技有限公司 | Smoke detector |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2296764A (en) * | 1995-01-04 | 1996-07-10 | Caradon Gent Limited | Improvements in and relating to smoke detectors |
| GB2306218B (en) * | 1995-10-11 | 1999-06-23 | Amlani Manhar | Combined detector & sounder device for fire alarm system |
| JPH11185179A (en) * | 1997-12-18 | 1999-07-09 | Matsushita Electric Works Ltd | Heat and smoke combined type fire sensor and manufacture thereof |
-
2000
- 2000-03-17 JP JP2000076718A patent/JP3902377B2/en not_active Expired - Fee Related
-
2001
- 2001-03-06 EP EP01302017A patent/EP1146492B1/en not_active Expired - Lifetime
- 2001-03-16 CN CNB011117273A patent/CN1145126C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001266265A (en) | 2001-09-28 |
| CN1314664A (en) | 2001-09-26 |
| EP1146492A3 (en) | 2001-10-24 |
| EP1146492B1 (en) | 2003-05-07 |
| EP1146492A2 (en) | 2001-10-17 |
| JP3902377B2 (en) | 2007-04-04 |
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Owner name: NISSAN CO., LTD. Free format text: FORMER NAME: NTANEN CO., LTD. |
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Address after: Tokyo, Japan, Japan Patentee after: Hittan Co., Ltd. Address before: Tokyo, Japan, Japan Patentee before: Nittan Co., Ltd. |
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Owner name: LIXIL NITTAN CO., LTD. Free format text: FORMER NAME: HITTAN CO. LTD. |
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Address after: Tokyo, Japan, Japan Patentee after: Lixil Nittan Company, Limited. Address before: Tokyo, Japan, Japan Patentee before: Hittan Co., Ltd. |
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Granted publication date: 20040407 Termination date: 20190316 |