JPS6251487U - - Google Patents

Info

Publication number
JPS6251487U
JPS6251487U JP13986085U JP13986085U JPS6251487U JP S6251487 U JPS6251487 U JP S6251487U JP 13986085 U JP13986085 U JP 13986085U JP 13986085 U JP13986085 U JP 13986085U JP S6251487 U JPS6251487 U JP S6251487U
Authority
JP
Japan
Prior art keywords
diaphragm
air
fire
temperature rise
air chamber
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
JP13986085U
Other languages
Japanese (ja)
Other versions
JPH0449751Y2 (en
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 filed Critical
Priority to JP1985139860U priority Critical patent/JPH0449751Y2/ja
Publication of JPS6251487U publication Critical patent/JPS6251487U/ja
Application granted granted Critical
Publication of JPH0449751Y2 publication Critical patent/JPH0449751Y2/ja
Expired legal-status Critical Current

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  • Fire-Detection Mechanisms (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本願考案を説明する図面であつて、第１
図乃至第３図は従来例を示し、第１図は断面図、
第２図乃至第３図はリーク孔の断面図を示す。第
４図乃至第５図は本願考案の実施例を説明する図
面であつて、第４図は部分断面図、第５図はダイ
ヤフラム２１の平面図である。 ２０：感熱板、２１：ダイヤフラム、２１ａ，
２１ｂ：ダイヤフラムの平坦部、２１ｄ：リーク
孔、２２：ダイヤフラム支持板、２３：空気室。 The drawings are drawings illustrating the invention of the present application, and are
Figures 3 to 3 show conventional examples, and Figure 1 is a sectional view;
2 and 3 show cross-sectional views of the leak hole. 4 and 5 are drawings for explaining an embodiment of the present invention, in which FIG. 4 is a partial sectional view, and FIG. 5 is a plan view of the diaphragm 21. 20: Heat sensitive plate, 21: Diaphragm, 21a,
21b: flat part of diaphragm, 21d: leak hole, 22: diaphragm support plate, 23: air chamber.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 感熱板とダイヤフラムとダイヤフラム支持板と
で空気室を形成し、緩慢な温度上昇で膨脹する空
気はリークブロツクよりリークさせ、火災による
温度上昇で膨脹した空気室の空気によりダイヤフ
ラムを変位させ火災を検出するようにした差動式
熱感知器において、前記リーク孔をレーザー加工
されたダイヤフラムの小孔とするとともにダイヤ
フラムの材料をステンレス鋼薄板としたことを特
徴とする差動式熱感知器。 An air chamber is formed by a heat sensitive plate, a diaphragm, and a diaphragm support plate, and the air that expands due to a slow temperature rise is leaked from the leak block, and the diaphragm is displaced by the air in the air chamber that expands due to the temperature rise due to a fire, thereby detecting a fire. A differential heat sensor characterized in that the leak hole is a small hole in a laser-processed diaphragm, and the diaphragm is made of a thin stainless steel plate.
JP1985139860U 1985-09-12 1985-09-12 Expired JPH0449751Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985139860U JPH0449751Y2 (en) 1985-09-12 1985-09-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985139860U JPH0449751Y2 (en) 1985-09-12 1985-09-12

Publications (2)

Publication Number Publication Date
JPS6251487U true JPS6251487U (en) 1987-03-31
JPH0449751Y2 JPH0449751Y2 (en) 1992-11-24

Family

ID=31046163

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985139860U Expired JPH0449751Y2 (en) 1985-09-12 1985-09-12

Country Status (1)

Country Link
JP (1) JPH0449751Y2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB735766A (en) * 1952-10-23 1955-08-31 Joseph Peppo Levy Improvements in or relating to burglar alarm and like warning systems
JPS4940698A (en) * 1972-08-23 1974-04-16
JPS57170486U (en) * 1981-04-17 1982-10-27
JPS6034857U (en) * 1983-08-16 1985-03-09 ホーチキ株式会社 fire detector

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6034857B2 (en) * 1977-04-20 1985-08-10 株式会社日立製作所 switching circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB735766A (en) * 1952-10-23 1955-08-31 Joseph Peppo Levy Improvements in or relating to burglar alarm and like warning systems
JPS4940698A (en) * 1972-08-23 1974-04-16
JPS57170486U (en) * 1981-04-17 1982-10-27
JPS6034857U (en) * 1983-08-16 1985-03-09 ホーチキ株式会社 fire detector

Also Published As

Publication number Publication date
JPH0449751Y2 (en) 1992-11-24

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