EP1146492A2 - Multisensor - Google Patents

Multisensor Download PDF

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Publication number
EP1146492A2
EP1146492A2 EP01302017A EP01302017A EP1146492A2 EP 1146492 A2 EP1146492 A2 EP 1146492A2 EP 01302017 A EP01302017 A EP 01302017A EP 01302017 A EP01302017 A EP 01302017A EP 1146492 A2 EP1146492 A2 EP 1146492A2
Authority
EP
European Patent Office
Prior art keywords
light
sensor
casing
smoke chamber
smoke
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.)
Granted
Application number
EP01302017A
Other languages
English (en)
French (fr)
Other versions
EP1146492A3 (de
EP1146492B1 (de
Inventor
Kazuyoshi c/o Nittan Company Limited Sakurai
Ichiro c/o Nittan Company Limited Hamada
Yasunori c/o Nittan Company Limited Oya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nittan Co Ltd
Original Assignee
Nittan Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nittan Co Ltd filed Critical Nittan Co Ltd
Publication of EP1146492A2 publication Critical patent/EP1146492A2/de
Publication of EP1146492A3 publication Critical patent/EP1146492A3/de
Application granted granted Critical
Publication of EP1146492B1 publication Critical patent/EP1146492B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention relates to a multi-sensor for sensing (detecting) a fire by smoke and heat.
  • a multi-sensor which senses heat by using a heat sensing element, such as a thermistor or the like, and which senses smoke by detecting a scattered light with a light detecting element, which is generated by scattering a light emitted from a light emitting element, has been known before.
  • the heat sensing element sensitively detects an ascending air current caused by a fire, it is necessary to dispose the heat sensing element on a top portion of the multi-sensor (that is, dispose it on a lower side of the multi-sensor when the multi-sensor is attached to a ceiling).
  • a circuit board for processing signals in the sensor is provided on a lower portion of the sensor (that is, on an upper side of the sensor when the sensor is attached to a ceiling), it is necessary to provide a wire for connecting the heat sensing element with the circuit board.
  • a through hole is formed in a labyrinth portion provided around the smoke sensing area to pass the wire through the through hole.
  • the wire passes through the inside of the sensor, a reflected light generated on the surface of the wire is detected by the light detecting element as a noise light. Therefore, a sensibility for detecting smoke deteriorates.
  • the surface forms of the wires made by covering a metal wire with soft resin are slightly different multi-sensor by multi-sensor. Because the amounts of generated noise light were different by wire, there was a problem that the variation of the detection sensibility occurs multi-sensor by multi-sensor.
  • an object of the present invention is to provide a multi-sensor which is easily assembled when the sensor is manufactured, and which is easily detached or assembled when the maintenance of the sensor is carried out after the attachment of the sensor, and in which a wire can be arranged so as to hardly influence the detection sensibility or the tendency thereof.
  • a multi-sensor (sensor 1) comprises:
  • the wire of the heat sensing element passes through the insert portion which constitutes a wall body having the hole for inserting the wire of the heat sensing element wherein the wall body is approximately consecutive from the upper surface of the inside of the smoke chamber to the lower surface of the inside of the smoke chamber, and the hole penetrates through the upper surface to the lower surface, to the external portion of the smoke chamber, the wire can pass through the inside of the smoke chamber in a state of covering the wire with the insert portion.
  • the wiring of the heat sensing element is carried out by only passing the wire through the insert portion.
  • the insert portion acts as a guide for attaching the heat sensing element and setting the position of the heat sensing element. Therefore, it can be easy that the multi-sensor is assembled when the multi-sensor is manufactured, and that the multi-sensor is detached or assembled when the maintenance of the multi-sensor is carried out.
  • the wire is not bare in the smoke chamber, a noise light is not generated from the surface of the wire. Therefore, the amounts of generated noise light are not different multi-sensor by multi-sensor. The performance for the fire detection becomes stable multi-sensor by multi-sensor.
  • the insert portion is made from, for example, hard resin
  • the variation of the surface forms of the insert portion is small. Even though a light reflects on the surface of the insert portion and the reflected light becomes a noise light, the problem that the performance for the fire detection is different multi-sensor by multi-sensor, is not caused.
  • the term "above the smoke chamber” means the top portion side of the smoke chamber, that is, the lower side of the multi-sensor which is attached to a ceiling.
  • the wall body which is approximately consecutive from the upper surface of the inside of the smoke chamber to the lower surface of the inside of the smoke chamber does not necessarily mean that the wall body is perfectly consecutive from the upper surface of the inside of the smoke chamber to the lower surface of the inside of the smoke chamber.
  • the wall body may have the continuity that the wire is not bare in the smoke chamber and that a noise light is not generated.
  • a light shielding plate for shielding the light detecting portion from directly detecting a light emitted by the light emitting portion may be provided in the smoke chamber, and the insert portion may use at least a part of the light shielding plate.
  • the insert portion for passing the wire of the heat sensing element uses at least a part of the light shielding plate, the insert portion is provided near the central portion of the smoke chamber. Therefore, the sensibility of the heat sensing element is not biased to a specific tendency. It is possible to detect a fire in all directions at the same sensibility.
  • the insert portion uses at least a part of the light shielding plate
  • the insert portion may include the situation that a part of light shielding plate is used as a wall body and acts as the insert portion.
  • the light shielding plate may be formed in a cylindrical shape, and acts as the insert portion.
  • the multi-sensor uses a light shielding plate provided in a sensor according to an earlier development, the number of parts does not increase.
  • the multi-sensor may further comprise:
  • the multi-sensor is more easily assembled. Further, because the space between the insert portion and the fixing member does not exist, an outer light hardly enters the smoke chamber.
  • the multi-sensor may further comprise:
  • the multi-sensor is more easily assembled. Further, because the space between the insert portion and the casing does not exist, an outer light hardly enters the smoke chamber.
  • a structure which prevents a light from entering the smoke chamber there is a known labyrinth structure or the like. However, any structure may be used if the structure can prevent a light from entering the smoke chamber.
  • FIG. 1 shows each member for constructing a sensor 1 as an example of the multi-sensor according to the present invention.
  • FIG. 2 is a vertical sectional view showing a state that each member shown in FIG. 1 is incorporated into the sensor.
  • FIGS. 1 and 2 denotes a cover portion
  • 3 denotes a main body case
  • 4 denotes a labyrinth body
  • 5 denotes an insect mesh
  • 6 denotes a shield case
  • 7 denotes an optical element portion
  • 8 denotes a circuit board
  • 9 denotes a base
  • 10 denotes a thermistor.
  • FIG. 3 is a horizontal sectional view for showing the inside of the labyrinth body 4.
  • the cover portion 2 is a cover for covering a top portion of the sensor 1.
  • air fins 2a, 2a ⁇ for introducing the air from the circumference of the sensor 1, are formed.
  • through holes 2b, 2b ⁇ for passing the air to the inside of the sensor 1 are provided between the air fins 2a and 2a which are next to each other.
  • the thermistor 10 is provided in a space which is surrounded by the through holes 2b, 2b ⁇ as shown in FIG. 2.
  • the space acts as a heat sensing area T.
  • a contacting portion 2c for approximately contacting with the inside of the projecting portion 3b formed in the main body case 3 is formed in an annular shape.
  • the cover portion 2 is fixed to the main body case 3 by fitting the contacting portion 2c in the circumference of the projecting portion 3b and by engaging a pawl which is not shown in the figure, with a predetermined portion of the main body case.
  • the main body case 3 is a casing for covering the labyrinth body 4 and the like. On the center of the main body case 3, an opening 3a is formed. A projecting portion 3b is provided so as to surround the opening 3a. In the main body case 3, inflow holes 3c, 3c ⁇ which are formed along a peripheral direction so as to flow smoke into the smoke chamber S, are provided.
  • a plurality of engaging pawls 3f for fixing the main body case 3 to the base 9, are provided on the inner and lower portion of the main body case 3. In FIG. 2, only one engaging pawl is shown.
  • the labyrinth body (casing body) 4 is covered with a disk-shaped plate 4d.
  • a plurality of light shielding walls 4a having cross sections formed in a Z-shape, an M-shape and the like, a containing portion 4b for containing a light emitting portion 12 which will be explained below, and a containing portion 4c for containing a light detecting portion 13, are provided in each predetermined position.
  • the containing portion 4b for the light emitting portion 12 and the containing portion 4c for the light detecting portion 13 are provided in the labyrinth body 4.
  • a lead hole 4e for inserting a lead wire 10a of the thermistor 10, is provided on the center of the plate 4d.
  • the circumference of the labyrinth body 4 is covered with the insect mesh (insect screen) 5 having a plurality of fine meshes.
  • the insect mesh 5 prevents an insect or the like from entering the labyrinth body 4.
  • the shield case 6 is provided so as to cover the upper surface of the circuit board 8, as shown in FIG. 2. On the center of the shield case 6, a hole 6a for a support body, in which a support body 11 of the optical element portion 7 can be fit, is formed.
  • the shield case 6 is fixed to the base 9 by using a pawl which is not shown in the figure.
  • a circular regulation wall 6e and a plurality of regulation plates 6d, 6d, 6d and 6d which project from the regulation wall 6e, are provided in order to regulate the position in which the labyrinth body 4 is contained.
  • the optical element portion 7 comprises a support body (fixing member) 11 and a light emitting portion 12, a light detecting portion 13 and a light shielding plate 14 which are provided on the support body 11.
  • the light emitting portion 12 comprises a light emitting element (not shown in the figure), and regularly emits a light under the control of the circuit board 8.
  • the light detecting portion 13 comprises a light detecting element (not shown in the figure), and transmits a light detecting signal to the circuit board 8.
  • the light shielding plate 14 blocks a light which directly reaches from the light emitting portion 12 to the light detecting portion 13, so as not to directly detect a light emitted from the light emitting element of the light emitting portion 12 by the light detecting element of the light detecting portion 13.
  • the light shielding plate 14 is made from hard resin and is united with the support body 11.
  • the light shielding plate 14 has a height to approximately reach the lower surface of the plate 4d of the labyrinth body 4.
  • the light shielding plate 14 is formed in a cylindrical shape as shown in FIGS. 2 and 3.
  • the light shielding plate 14 comprises a through hole 14a for inserting the lead wire 10a, which penetrates the light shielding plate 14 in an upper and lower direction.
  • the optical element portion 7 is incorporated into the sensor 1 by soldering the light emitting element of the light emitting portion 12 and the light detecting element of the light detecting portion 13 which are provided on the support body 11, to the circuit board 8.
  • the light emitting portion 12 is contained in the containing portion 4b of the labyrinth body 4.
  • the light detecting portion 13 is contained in the containing portion 4c.
  • the light shielding plate 14 is erected in an upper and lower direction in the smoke chamber S of the labyrinth body 4.
  • a predetermined electronic circuit (not shown in the figure) for controlling the operation of the sensor 1, is formed on the circuit board 8.
  • the light emitting element and the light detecting element are connected with the circuit board 8.
  • the lead wire 10a of the thermistor 10 is connected with the center portion of the upper surface of the circuit board 8.
  • the circuit board 8 is fixed to the base 9 by screws 15 and 15 as shown in FIG. 2.
  • the base 9 is formed in a disk-shape as shown in FIG. 1.
  • the base 9 constitutes a lower portion of the casing of the sensor 1.
  • an engaging portion for fixing the sensor to a ceiling by connecting the base with an attachment base (not shown in the figure) which is previously attached to the ceiling, is provided.
  • a plurality of notches 9a are provided so as to correspond to the engaging pawls 3f of the main body part 3.
  • each member having the above structure is arranged as follows. As shown in FIG. 2, the circuit board 8, the optical element portion 7 and the shield case 6 are provided on the base 9.
  • the labyrinth body 4 is mounted on the shield case 6 in a state the position of the labyrinth body 4 is adjusted so that the light emitting portion 12 projecting to the upper surface of the shield case 6 is contained in the containing portion 4b and the light detecting portion 13 is contained in the containing portion 4c.
  • the main body case 3 is fixed to the base 9 by engaging a plurality of engaging pawls 3f of the main body case 3 with the corresponding notches 9a of the base 9.
  • the cover portion 2 is fixed to the main body case 3.
  • the sensor 1 is assembled so as to provide the thermistor 10 in the heat sensing area T of the cover portion 2.
  • the sensor 1 is attached to a ceiling in a state the cover portion 2 is directed downwardly. Heat caused by a fire is sensed by the thermistor 10 in the heat sensing area T.
  • the light emitting portion 12 emits a light regularly. In a normal status, the emitted light is blocked by the light shielding plate 14 and is not detected by the light detecting portion 13.
  • smoke caused by a fire flows into the labyrinth body 4, the light emitted from the light emitting portion 12 is scattered. The scattered light is detected by the light detecting portion 13. Therefore, the fire is detected.
  • the sensor 1 detects a fire by sensing both heat and smoke.
  • the lead wire 10a of the thermistor 10 passes through the through hole 14a of the light shielding plate 14 united with the support body 11. Therefore, the lead wire 10a can pass through the inside of the smoke chamber S in a state that the lead wire 10a is covered with the light shielding plate 14.
  • the operation for arranging the lead wire so as to avoid the smoke sensing area can be simple because the lead wire 10a only passes through the through hole 14a.
  • the through hole 14a acts as a guide for attaching the thermistor 10 and setting the position of the thermistor 10. Therefore, it can be easy that the sensor is assembled when the sensor is manufactured, and that the sensor is detached or assembled when the maintenance of the sensor is carried out.
  • the lead wire 10a is not bare in the smoke chamber S, a noise light is not generated from the surface of the lead wire. Therefore, the amounts of generated noise light are not different multi-sensor by multi-sensor. The performance for the fire detection becomes stable multi-sensor by multi-sensor.
  • the light shielding plate 14 is made from hard resin, the variation of the surface forms of each light shielding plate is small. Even though a light reflects on the surface of the light shielding plate 14 and the reflected light becomes a noise light, the problem that the performance for the fire detection is different multi-sensor by multi-sensor, is not caused.
  • the lead wire 10a can pass through the approximately central portion of the smoke chamber S. Therefore, the sensibility of the thermistor 10 is not biased to a specific tendency. It is possible to detect a fire in all directions at the same sensibility. Because the sensor 1 uses a light shielding plate provided in a sensor according to an earlier development, the number of parts does not increase even though the through hole 14a is formed in the light shielding plate.
  • the sensor 1 is more easily assembled. Further, because the space between the support body 11 and the light shielding plate 14 does not exist, an outer light does not enter the smoke chamber S.
  • the multi-sensor according to the present invention is not limited to the above embodiment.
  • the concrete structure, the shape, or the like of each member can be suitably modified without departing from the gist of the present invention.
  • the light shielding plate may be united with the plate of the labyrinth body.
  • the wire of the heat sensing element passes through the insert portion constituting the wall body which is approximately consecutive from the upper surface of the inside of the smoke chamber to the lower surface of the inside of the smoke chamber, and which has the hole for inserting the wire of the heat sensing element, wherein the hole penetrates through the upper surface to the lower surface, to the outside of the smoke chamber, the wire can pass through the inside of the smoke chamber in a state of covering the wire with the insert portion.
  • the wiring of the heat sensing element is carried out by only passing the wire through the insert portion.
  • the insert portion acts as a guide for attaching the heat sensing element and setting the position of the heat sensing element. Therefore, it can be easy that the multi-sensor is assembled when the multi-sensor is manufactured, and that the multi-sensor is detached or assembled when the maintenance of the multi-sensor is carried out.
  • the wire is not bare in the smoke chamber, a noise light is not generated from the surface of the wire. Therefore, the amounts of generated noise light are not different multi-sensor by multi-sensor. The performance for the fire detection becomes stable multi-sensor by multi-sensor.
  • the insert portion is made from, for example, hard resin
  • the variation of the surface forms of the insert portion is small. Even though a light reflects on the surface of the insert portion and the reflected light becomes a noise light, the problem that the performance for the fire detection is different multi-sensor by multi-sensor, is not caused.
  • the insert portion for passing the wire of the heat sensing element uses at least a part of the light shielding plate, the insert portion is provided near the central portion of the smoke chamber. Therefore, the sensibility of the heat sensing element is not biased to a specific tendency. It is possible to detect a fire in all directions at the same sensibility.
  • the multi-sensor uses a light shielding plate provided in a sensor according to an earlier development, the number of parts does not increase.
  • the multi-sensor is more easily assembled. Further, because the space between the insert portion and the fixing member does not exist, an outer light hardly enters the smoke chamber.
  • the multi-sensor is more easily assembled. Further, because the space between the insert portion and the casing does not exist, an outer light hardly enters the smoke chamber.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
EP01302017A 2000-03-17 2001-03-06 Multisensor Expired - Lifetime EP1146492B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000076718 2000-03-17
JP2000076718A JP3902377B2 (ja) 2000-03-17 2000-03-17 熱煙複合式感知器

Publications (3)

Publication Number Publication Date
EP1146492A2 true EP1146492A2 (de) 2001-10-17
EP1146492A3 EP1146492A3 (de) 2001-10-24
EP1146492B1 EP1146492B1 (de) 2003-05-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01302017A Expired - Lifetime EP1146492B1 (de) 2000-03-17 2001-03-06 Multisensor

Country Status (3)

Country Link
EP (1) EP1146492B1 (de)
JP (1) JP3902377B2 (de)
CN (1) CN1145126C (de)

Cited By (4)

* Cited by examiner, † Cited by third party
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
CN114241708A (zh) * 2021-12-14 2022-03-25 杭州海康消防科技有限公司 感烟探测器
US11790746B2 (en) 2021-02-02 2023-10-17 Carrier Corporation Smoke entry solution for multi wave multi angle safety device
US11975228B2 (en) 2018-03-28 2024-05-07 Hochiki Corporation Fire detection apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100983539B1 (ko) * 2008-03-07 2010-09-27 지멘스신화주식회사 광전식 화재감지기
JP5135140B2 (ja) * 2008-09-19 2013-01-30 ニッタン株式会社 炎感知器
JP5508912B2 (ja) * 2010-03-17 2014-06-04 能美防災株式会社 熱煙複合型火災感知器
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 (ja) * 2010-06-30 2014-05-07 ニッタン株式会社 熱煙複合式感知器
CN110766906B (zh) * 2015-05-15 2021-03-30 谷歌有限责任公司 烟雾探测器室结构及相关方法
CN106056830B (zh) * 2016-06-20 2019-01-08 四川赛科安全技术有限公司 一种光电感烟探测器的迷宫罩
CN106228740A (zh) * 2016-08-15 2016-12-14 许昌初心智能电气科技有限公司 一种烟感探测器迷宫及使用该迷宫的烟感探测器
CN106355820B (zh) * 2016-10-25 2018-09-28 上海松江飞繁电子有限公司 一种烟雾火灾报警器
JP7280025B2 (ja) * 2018-09-18 2023-05-23 ホーチキ株式会社 火災検出装置
JP7227716B2 (ja) * 2018-08-31 2023-02-22 ホーチキ株式会社 火災検出装置
CN111292500B (zh) * 2018-12-07 2022-02-08 杭州海康消防科技有限公司 感烟火灾探测报警器
JP7286386B2 (ja) * 2019-04-08 2023-06-05 ニッタン株式会社 炎感知器
US11145176B1 (en) 2020-03-19 2021-10-12 Carrier Corporation Photoelectric smoke detectors

Citations (3)

* Cited by examiner, † Cited by third party
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
GB2306218A (en) * 1995-10-11 1997-04-30 Amlani Manhar Combination fire and smoke alarm
JPH11185179A (ja) * 1997-12-18 1999-07-09 Matsushita Electric Works Ltd 熱煙複合型火災感知器及びその製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
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
GB2306218A (en) * 1995-10-11 1997-04-30 Amlani Manhar Combination fire and smoke alarm
JPH11185179A (ja) * 1997-12-18 1999-07-09 Matsushita Electric Works Ltd 熱煙複合型火災感知器及びその製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 12, 29 October 1999 (1999-10-29) & JP 11 185179 A (MATSUSHITA ELECTRIC WORKS LTD), 9 July 1999 (1999-07-09) *

Cited By (4)

* Cited by examiner, † Cited by third party
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
US11975228B2 (en) 2018-03-28 2024-05-07 Hochiki Corporation Fire detection apparatus
US11790746B2 (en) 2021-02-02 2023-10-17 Carrier Corporation Smoke entry solution for multi wave multi angle safety device
CN114241708A (zh) * 2021-12-14 2022-03-25 杭州海康消防科技有限公司 感烟探测器

Also Published As

Publication number Publication date
CN1314664A (zh) 2001-09-26
EP1146492A3 (de) 2001-10-24
CN1145126C (zh) 2004-04-07
EP1146492B1 (de) 2003-05-07
JP2001266265A (ja) 2001-09-28
JP3902377B2 (ja) 2007-04-04

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