JPH01102990U - - Google Patents
Info
- Publication number
- JPH01102990U JPH01102990U JP19863187U JP19863187U JPH01102990U JP H01102990 U JPH01102990 U JP H01102990U JP 19863187 U JP19863187 U JP 19863187U JP 19863187 U JP19863187 U JP 19863187U JP H01102990 U JPH01102990 U JP H01102990U
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- radiation
- radiation source
- internal
- ionization
- 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
Links
- 239000000779 smoke Substances 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims 5
- 235000012489 doughnuts Nutrition 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案の中間電極構造を備えたイオン
化式煙感知器の一実施例を示した断面図；第２図
は本考案の中間電極の平面図；第３図は第２図の
側面図である。
１：感知器本体、２：感知器ベース、３：本体
カバー、４：煙流入口、５：外カバー、６：絶縁
板、７：内部電極、８：中間電極、９：外部電極
、１０：プリント基板、１１：シールドケース、
１２：ＦＥＴ、１４：電極片、１５ａ〜１５ｃ：
支持脚、１６：電極リード、１７：突起、１８：
切欠、Ａ：内部電離室、Ｂ：外部電離室。
Figure 1 is a sectional view showing an embodiment of an ionization smoke detector equipped with the intermediate electrode structure of the present invention; Figure 2 is a plan view of the intermediate electrode of the present invention; Figure 3 is a side view of Figure 2. It is a diagram. 1: Sensor body, 2: Sensor base, 3: Body cover, 4: Smoke inlet, 5: Outer cover, 6: Insulating plate, 7: Internal electrode, 8: Intermediate electrode, 9: External electrode, 10: Printed circuit board, 11: Shield case,
12: FET, 14: Electrode piece, 15a to 15c:
Support leg, 16: Electrode lead, 17: Projection, 18:
Notch, A: internal ionization chamber, B: external ionization chamber.
Claims (1)
側に配置されて間に内部電離室を形成すると共に
前記放射線源からの放射線を通過させる開口穴を
備えた中間電極と、該中間電極の外側に配置され
て間に外部からの煙の流入可能な外部電離室を形
成する外部電極とを備えたイオン化式煙感知器に
於いて、 前記中間電極をドーナツ形状にすると共に前記
放射線源からの放射線が通過する開口穴の中心方
向に向けて少なくとも１つの電極片を延在したこ
とを特徴とするイオン化式煙感知器の中間電極構
造。[Claims for Utility Model Registration] An internal electrode provided with a radiation source, and an intermediate portion provided with an open hole disposed outside the internal electrode to form an internal ionization chamber therebetween and through which radiation from the radiation source passes. In an ionization type smoke sensor comprising an electrode and an external electrode disposed outside the intermediate electrode to form an external ionization chamber between which smoke can flow in from the outside, the intermediate electrode is shaped like a donut. An intermediate electrode structure for an ionization type smoke sensor, characterized in that at least one electrode piece extends toward the center of the opening hole through which radiation from the radiation source passes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19863187U JPH01102990U (en) | 1987-12-26 | 1987-12-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19863187U JPH01102990U (en) | 1987-12-26 | 1987-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01102990U true JPH01102990U (en) | 1989-07-12 |
Family
ID=31489128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19863187U Pending JPH01102990U (en) | 1987-12-26 | 1987-12-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01102990U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS622267A (en) * | 1985-06-28 | 1987-01-08 | Dainichi Color & Chem Mfg Co Ltd | Electrophotographic sensitive body |
-
1987
- 1987-12-26 JP JP19863187U patent/JPH01102990U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS622267A (en) * | 1985-06-28 | 1987-01-08 | Dainichi Color & Chem Mfg Co Ltd | Electrophotographic sensitive body |
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