JPS5492099A - Fire detector - Google Patents

Fire detector

Info

Publication number
JPS5492099A
JPS5492099A JP15819577A JP15819577A JPS5492099A JP S5492099 A JPS5492099 A JP S5492099A JP 15819577 A JP15819577 A JP 15819577A JP 15819577 A JP15819577 A JP 15819577A JP S5492099 A JPS5492099 A JP S5492099A
Authority
JP
Japan
Prior art keywords
diaphragm
chamber
linkage
pressure
mobile contact
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
Application number
JP15819577A
Other languages
Japanese (ja)
Inventor
Fujinori Kimura
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.)
Toshiba TEC Corp
Original Assignee
Tokyo Electric 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 Tokyo Electric Co Ltd filed Critical Tokyo Electric Co Ltd
Priority to JP15819577A priority Critical patent/JPS5492099A/en
Publication of JPS5492099A publication Critical patent/JPS5492099A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fire-Detection Mechanisms (AREA)

Abstract

PURPOSE:To prevent the malfunction of the diaphragm by securing the identical level between the large atmospheric pressure and the pressure in the air chamber by securing linkage between the air chamber and the open air via the leak resistance element composed of the porous macromolecular compound. CONSTITUTION:Case 6 one surface of which is selaed harmetically by diaphragm 7 joining to the mobile contact and which contains air chamber 5 formed inside is attached to the main body containing both the fixed contact and mobile contact connected to the alarm part. Linkage part 17 is formed to diaphragm 7 to secure the linkage between chamber 5 and the open air, and liak resistance element 18 composed of the porous macromolecular compound featuring a high air current resistance is inserted into part 17. The diameter of the minute vent hole of element 18 is set to 3-15mu with the porosity set to 30-40%. When the pressure of chamber 5 increases by the thermal expansion, diaphragm 7 is deformed. As a result, the fixed contact touches the mobile contact to perform the alarming action.
JP15819577A 1977-12-29 1977-12-29 Fire detector Pending JPS5492099A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15819577A JPS5492099A (en) 1977-12-29 1977-12-29 Fire detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15819577A JPS5492099A (en) 1977-12-29 1977-12-29 Fire detector

Publications (1)

Publication Number Publication Date
JPS5492099A true JPS5492099A (en) 1979-07-20

Family

ID=15666340

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15819577A Pending JPS5492099A (en) 1977-12-29 1977-12-29 Fire detector

Country Status (1)

Country Link
JP (1) JPS5492099A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62125994U (en) * 1985-09-12 1987-08-10
JPH0284993U (en) * 1988-12-16 1990-07-03

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62125994U (en) * 1985-09-12 1987-08-10
JPH0284993U (en) * 1988-12-16 1990-07-03

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