JPS6025676Y2 - heat detector - Google Patents
heat detectorInfo
- Publication number
- JPS6025676Y2 JPS6025676Y2 JP10001082U JP10001082U JPS6025676Y2 JP S6025676 Y2 JPS6025676 Y2 JP S6025676Y2 JP 10001082 U JP10001082 U JP 10001082U JP 10001082 U JP10001082 U JP 10001082U JP S6025676 Y2 JPS6025676 Y2 JP S6025676Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- thermistor
- sensitive chamber
- collecting plate
- chamber body
- 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
Links
Landscapes
- Fire-Detection Mechanisms (AREA)
- Fuses (AREA)
Description
【考案の詳細な説明】
本考案はサーミスタの電気抵抗の温度依存性を利用した
熱感知器に関するものである。[Detailed Description of the Invention] The present invention relates to a heat sensor that utilizes the temperature dependence of the electrical resistance of a thermistor.
サーミスタは温度の変化により、その電気抵抗が著しく
変化する素子であり、抵抗を測定することにより、温度
を検知し、火災による温度上昇を検出するものである。A thermistor is an element whose electrical resistance changes significantly with changes in temperature, and by measuring the resistance, it detects temperature and detects a temperature rise due to a fire.
サーミスタを用いる熱感知器は、サーミスタの熱応答性
が良く、そのばらつきが少いことが必要であり又、サー
ミスタは周囲の部材への電気的絶縁を充分に確保しなけ
ればならない。In a heat sensor using a thermistor, the thermistor must have good thermal response and little variation, and the thermistor must ensure sufficient electrical insulation from surrounding members.
このため従来第１図に示す様に集熱板１と感熱室ボディ
２の間の感熱室３の空気中にサーミスタ４を保持する方
法があったが、熱の伝達をする媒体が空気であるため熱
応答性が悪いことになる。For this reason, there has conventionally been a method of holding the thermistor 4 in the air of the heat-sensitive chamber 3 between the heat collecting plate 1 and the heat-sensitive chamber body 2 as shown in FIG. 1, but the medium for heat transfer is air. This results in poor thermal response.
上述する問題点に鑑みて本考案になされたものであり、
サーミスタが周囲部材と電気的に確実に絶縁されると共
に熱応答性の良いサーミスタの取付構造をもつ熱感知器
を得ることを目的とする。This invention was devised in view of the above-mentioned problems,
It is an object of the present invention to provide a heat sensor having a thermistor mounting structure in which the thermistor is electrically insulated reliably from surrounding members and has good thermal responsiveness.
以下本考案−実施例の第２図に従い説明すると、感熱室
３は熱感知器５のボディ６の端部に設けられ、集熱板１
′と感熱室ボディ２′で内部に空間を形成している。The following description will be made with reference to FIG. 2 of the present invention-embodiment.
' and the heat-sensitive chamber body 2' form an internal space.
該空間にサーミスタ４を位置させる。A thermistor 4 is placed in this space.
サーミスタのリード線４ｂを感熱室ボディ２′に設けた
孔２’ａへ挿通している。A lead wire 4b of the thermistor is inserted into a hole 2'a provided in the heat-sensitive chamber body 2'.
サーミスタ４の素子４ａへはゴム材７を介在させる目的
で例としてゴムチューブ７′を被せる。For example, a rubber tube 7' is placed over the element 4a of the thermistor 4 for the purpose of interposing the rubber material 7 therebetween.
該ゴムチューブ７′を被せることで集熱板１′と感熱室
ボディ２′間の寸法バラツキ吸収し集熱板１′への一定
表面積での密着状態とし熱応答性の安定したものとして
いる。By covering the rubber tube 7', dimensional variations between the heat collecting plate 1' and the heat sensitive chamber body 2' are absorbed, and a constant surface area of the heat collecting plate 1' is brought into close contact with the heat collecting plate 1', resulting in stable thermal response.
集熱板１′と感熱室ボディ２′にはサーミスタ４の素子
４ｂの形状に合せた受部１’ａ及び２’ｂを設けてもよ
い。Receiving portions 1'a and 2'b matching the shape of the element 4b of the thermistor 4 may be provided on the heat collecting plate 1' and the heat sensitive chamber body 2'.
実施例としてはサーミスタ４の素子４ｂが球状である場
合には受部１′ａｔ ２’ｂにＲをつけている。As an example, when the element 4b of the thermistor 4 is spherical, the receiving portions 1'at 2'b are rounded.
Ｒをみつけることにより密着する表面積を広くし、熱応
答性を良くすることができると共にサーミスタ４の保持
も安定する。By finding R, the surface area in close contact can be widened, the thermal response can be improved, and the thermistor 4 can be held stably.
以上の様にサーミスタの電気抵抗の温度依存性によって
、火災による温度上昇を検出する熱感知器に於て、熱感
知器の端部の集熱板と感熱室ボディで形成する感熱室に
サーミスタを位置せしめ、該サーミスタをゴム材の如き
弾性と熱伝導の比較的高い部材を介して集熱板と感熱室
ボディで挟持することを特徴とする熱感知器としたので
、従来の感熱室の空間にサーミスタを保持するものでは
電気絶縁性は良いが熱応答性が悪かったが、本考案によ
ると、ゴムチューブにより集熱板等の周囲部材とサーミ
スタが接触することが無くなり電気絶縁がより確実なも
のとなると共に、熱応答性については、部材のばらつき
がある程度あっても集熱板に対してゴムチューブが常に
同じ表面積で接するために熱応答性のばらつきがほとん
ど無くなる効果を有し、ゴムチューブの熱伝導率は空気
よりも大きいので熱応答性も向上する。As mentioned above, due to the temperature dependence of the electrical resistance of the thermistor, in a heat sensor that detects a temperature rise due to a fire, the thermistor is installed in the heat sensitive chamber formed by the heat collecting plate at the end of the heat sensor and the heat sensitive chamber body. The thermistor is sandwiched between a heat collector plate and a heat-sensitive chamber body through a material with relatively high elasticity and thermal conductivity, such as a rubber material. A device that holds the thermistor in place had good electrical insulation but poor thermal response. However, according to the present invention, the rubber tube prevents the thermistor from coming into contact with surrounding components such as heat collecting plates, resulting in more reliable electrical insulation. In addition, in terms of thermal response, even if there is some variation in components, the rubber tube always contacts the heat collecting plate with the same surface area, which has the effect of almost eliminating variation in thermal response. Since the thermal conductivity of is higher than that of air, the thermal response is also improved.
第１図は従来例の熱感知器の正面断面図。
第２図ａ、 ｂ、 ｃは本考案の一実施例を示す図面
であり、ａは正面断面図、ｂはサーミスタの正面図、Ｃ
はゴムチューブの斜視図である。
１・・・集熱板、２・・・・・・感熱室ボディ、３・・
・・・・感熱室、４・・・・・・サーミスタ、４ｂ・・
・・・・素子、５・・・・・・熱感知器、７・・・・・
・ゴム材、７′・・・コムチューブ、１’ａ、 ２’
ｂ・・・・・・受部。FIG. 1 is a front sectional view of a conventional heat sensor. Figures 2a, b, and c are drawings showing one embodiment of the present invention, in which a is a front sectional view, b is a front view of the thermistor, and C is a front view of the thermistor.
is a perspective view of a rubber tube. 1... Heat collecting plate, 2... Heat sensitive chamber body, 3...
...Thermal chamber, 4...Thermistor, 4b...
...Element, 5...Heat sensor, 7...
・Rubber material, 7'...Comtube, 1'a, 2'
b・・・・・・Ukebe.
Claims (2)
災による温度上昇を検出する熱感知器に於て、熱感知器
の端部の集熱板と感熱室ボディで形成する感熱室にサー
ミスタを位置せしめ、該サーミスタのゴム材の如き弾性
と熱伝導の比較的高い部材を介して集熱板と感熱室ボデ
ィで挾持することを特徴とする熱感知器。(1) In a heat sensor that detects a temperature rise due to a fire based on the temperature dependence of the electrical resistance of the thermistor, the thermistor is placed in the heat-sensitive chamber formed by the heat collecting plate at the end of the heat sensor and the heat-sensitive chamber body. A heat sensor characterized in that the thermistor is sandwiched between a heat collecting plate and a heat sensitive chamber body through a member having relatively high elasticity and heat conduction, such as a rubber material.
形状に合わせた受部を設けた実用新案登録請求の範囲第
１項記載の熱感知器。(2) The heat sensor according to claim 1, wherein the heat collecting plate and the heat sensitive chamber body are provided with a receiving portion that matches the shape of the thermistor element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10001082U JPS6025676Y2 (en) | 1982-06-30 | 1982-06-30 | heat detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10001082U JPS6025676Y2 (en) | 1982-06-30 | 1982-06-30 | heat detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS596289U JPS596289U (en) | 1984-01-14 |
| JPS6025676Y2 true JPS6025676Y2 (en) | 1985-08-01 |
Family
ID=30236770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10001082U Expired JPS6025676Y2 (en) | 1982-06-30 | 1982-06-30 | heat detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6025676Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0421182Y2 (en) * | 1984-12-20 | 1992-05-14 |
-
1982
- 1982-06-30 JP JP10001082U patent/JPS6025676Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS596289U (en) | 1984-01-14 |
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