DE59010065D1 - Fire detector - Google Patents

Fire detector

Info

Publication number
DE59010065D1
DE59010065D1 DE59010065T DE59010065T DE59010065D1 DE 59010065 D1 DE59010065 D1 DE 59010065D1 DE 59010065 T DE59010065 T DE 59010065T DE 59010065 T DE59010065 T DE 59010065T DE 59010065 D1 DE59010065 D1 DE 59010065D1
Authority
DE
Germany
Prior art keywords
thermocouple
heat
fire
test
fire detector
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
Application number
DE59010065T
Other languages
German (de)
Inventor
Klaus Dipl Ing Schierau
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.)
Minimax GmbH and Co KG
Original Assignee
Preussag AG Feuerschutz
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 Preussag AG Feuerschutz filed Critical Preussag AG Feuerschutz
Application granted granted Critical
Publication of DE59010065D1 publication Critical patent/DE59010065D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)

Abstract

A fire detector contains at least one sensor element (16) which detects the heat emanating from a fire. The sensor element is constructed as a thermocouple (16) whose reference junction is thermally connected to a heat sink (18) which stores the heat and whose temperature corresponds to the mean temperature of the room. The temperature of the measuring point of the thermocouple is influenced both by absorption of radiant energy and by heating due to heat conduction. In the event of a fire, energy components of both types of heat transmission are detected by the thermocouple, so that the fire detector reacts to fires with a high sensitivity. In one embodiment of the invention, a test sensor (82, 84) which receives a test radiation (94) is arranged near the thermocouple (16). The test sensor (82, 84) generates a test signal with the aid of which the degree of pollution of an upstream protective glass (80) is detected. <IMAGE>
DE59010065T 1989-07-21 1990-07-20 Fire detector Expired - Fee Related DE59010065D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3924250A DE3924250A1 (en) 1989-07-21 1989-07-21 FIRE DETECTOR

Publications (1)

Publication Number Publication Date
DE59010065D1 true DE59010065D1 (en) 1996-02-29

Family

ID=6385582

Family Applications (2)

Application Number Title Priority Date Filing Date
DE3924250A Granted DE3924250A1 (en) 1989-07-21 1989-07-21 FIRE DETECTOR
DE59010065T Expired - Fee Related DE59010065D1 (en) 1989-07-21 1990-07-20 Fire detector

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE3924250A Granted DE3924250A1 (en) 1989-07-21 1989-07-21 FIRE DETECTOR

Country Status (4)

Country Link
EP (1) EP0409266B1 (en)
AT (1) ATE133284T1 (en)
DE (2) DE3924250A1 (en)
ES (1) ES2084624T3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4331574C2 (en) * 1993-09-16 1997-07-10 Heimann Optoelectronics Gmbh Infrared sensor module
DE10011411C2 (en) 2000-03-09 2003-08-14 Bosch Gmbh Robert Imaging fire detector
DE10154923A1 (en) * 2001-11-08 2003-06-05 Klaus Palme Extracting electrical energy from air temperature fluctuations, involves enclosing heat storage device heated/cooled by ambient air in Peltier/Seebeck element through which heat flows
GB2426577A (en) 2005-05-27 2006-11-29 Thorn Security An optical detector with a reflector outside of its housing, and a plurality of sensors inside of its housing
GB2426578A (en) 2005-05-27 2006-11-29 Thorn Security A flame detector having a pulsing optical test source that simulates the frequency of a flame
RU2744900C1 (en) * 2020-03-23 2021-03-17 Закрытое акционерное общество "Производственное объединение "Спецавтоматика" Method for automatic fire hazard control and autonomous fire trigger device for its implementation

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2834008A (en) * 1953-04-28 1958-05-06 Petcar Res Corp Flame detector system
US3518654A (en) * 1967-05-16 1970-06-30 American District Telegraph Co Method and apparatus for detecting a condition
CH565421A5 (en) * 1974-05-10 1975-08-15 Cerberus Ag
JPS5727109Y2 (en) * 1974-07-20 1982-06-12
CA1023971A (en) * 1975-04-18 1978-01-10 Rodney L. Leroy Variable temperature sensor
US4003038A (en) * 1975-06-09 1977-01-11 Multi-State Devices Ltd. Thermal discriminator for sensing variations in the heat exchange properties of a medium
CH628171A5 (en) * 1978-04-25 1982-02-15 Cerberus Ag FLAME DETECTOR.
GB2089503B (en) * 1980-12-12 1984-07-18 Graviner Ltd Fire and explosion detection
GB2175686A (en) * 1985-05-28 1986-12-03 Graviner Ltd Fire or explosion detection arrangement
DE8528659U1 (en) * 1985-10-08 1987-03-19 Heimann Gmbh, 6200 Wiesbaden Infrared detector

Also Published As

Publication number Publication date
DE3924250A1 (en) 1991-02-07
ES2084624T3 (en) 1996-05-16
EP0409266B1 (en) 1996-01-17
DE3924250C2 (en) 1992-04-23
EP0409266A3 (en) 1991-08-14
EP0409266A2 (en) 1991-01-23
ATE133284T1 (en) 1996-02-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: MINIMAX GMBH, 23843 BAD OLDESLOE, DE

8327 Change in the person/name/address of the patent owner

Owner name: MINIMAX GMBH & CO. KG, 23843 BAD OLDESLOE, DE

8339 Ceased/non-payment of the annual fee