JPS62102155U - - Google Patents
Info
- Publication number
- JPS62102155U JPS62102155U JP19488885U JP19488885U JPS62102155U JP S62102155 U JPS62102155 U JP S62102155U JP 19488885 U JP19488885 U JP 19488885U JP 19488885 U JP19488885 U JP 19488885U JP S62102155 U JPS62102155 U JP S62102155U
- Authority
- JP
- Japan
- Prior art keywords
- injection hole
- cylinder
- axis
- nozzle member
- optical filter
- 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
- 230000003287 optical effect Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims 4
- 239000007924 injection Substances 0.000 claims 4
- 238000005259 measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Optical Measuring Cells (AREA)
Description
第１図ないし第６図は本考案に係る光透過式ダ
スト濃度検出装置の一実施例を示し、第１図はそ
のうち投光器部分の方を取り出して示す概略断面
図、第２図および第３図は該装置のダクト側に位
置するノズル部材のそれぞれ正面図、水平断面図
、第４図および第５図は光学フイルタ側に位置す
るノズル部材を示し、第４図は第５図における
―線断面図、第５図は水平断面図、第６図はダ
クト側ノズル部材から清浄空気の噴出状態を側面
から見た説明図、第７図は従来例の原理図である
。
１：ダクト、９：ランプ、１１：光学フイルタ
、１７：投光器、１８：筒体、１９：第１ノズル
部材、２０：第２ノズル部材、２５，３５：小孔
。
1 to 6 show an embodiment of the light transmission type dust concentration detection device according to the present invention, of which FIG. 1 is a schematic cross-sectional view showing the projector portion, and FIGS. 2 and 3. 4 and 5 show the nozzle member located on the optical filter side, respectively, and FIG. 4 is a cross-sectional view taken along the line - in FIG. 5. 5 is a horizontal cross-sectional view, FIG. 6 is an explanatory side view of the state of clean air being ejected from the duct-side nozzle member, and FIG. 7 is a principle diagram of a conventional example. 1: duct, 9: lamp, 11: optical filter, 17: projector, 18: cylinder, 19: first nozzle member, 20: second nozzle member, 25, 35: small hole.
Claims (1)
置される投光器および受光器を備え、かつ該投受
光器における上記通路内の気流と接する箇所にそ
れぞれ光学フイルタを備えた透過式ダクト濃度検
出装置において、上記光学フイルタと上記通路の
壁との間に上記投光器から発せられる測定光線の
光路を覆う筒体がそれぞれ設けられており、これ
ら各筒体における投受光器本体側には各筒体を取
り囲むノズル部材が少なくとも二体併設されて各
ノズル部材にはそれぞれ筒体内に連通する清浄空
気の噴射穴が筒体の周囲に沿つて設けられ、その
うち上記通路側に位置するノズル部材の噴射穴の
軸線は通路側へ斜めに向けられるとともに全軸線
が筒体の軸線上の点に向けられ、上記光学フイル
タ側に位置するノズル部材の噴射穴の軸線は筒体
の該噴射穴を含む横断面の中心に向けられている
ことを特徴とする光透過式ダクト濃度検出装置。 A transmission type duct concentration detection device comprising a light emitter and a light receiver installed on an optical path intersecting an airflow path including a duct, and an optical filter provided at each point of the light emitter and receiver in contact with the airflow in the passage. A cylindrical body is provided between the optical filter and the wall of the passageway to cover the optical path of the measurement light beam emitted from the emitter, and a cylindrical body that surrounds each cylindrical body is provided on the side of the light emitter/receiver main body of each of these cylindrical bodies. At least two nozzle members are installed together, and each nozzle member is provided with a clean air injection hole that communicates with the inside of the cylinder along the circumference of the cylinder, and the axis of the injection hole of the nozzle member located on the passage side is directed diagonally toward the passageway, and its entire axis is directed to a point on the axis of the cylinder, and the axis of the injection hole of the nozzle member located on the optical filter side is the center of the cross section of the cylinder that includes the injection hole. A light transmission type duct concentration detection device characterized in that it is directed to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19488885U JPS62102155U (en) | 1985-12-18 | 1985-12-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19488885U JPS62102155U (en) | 1985-12-18 | 1985-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62102155U true JPS62102155U (en) | 1987-06-29 |
Family
ID=31152276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19488885U Pending JPS62102155U (en) | 1985-12-18 | 1985-12-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62102155U (en) |
-
1985
- 1985-12-18 JP JP19488885U patent/JPS62102155U/ja active Pending