JPH0723732Y2 - Infrared analyzer light source - Google Patents
Infrared analyzer light sourceInfo
- Publication number
- JPH0723732Y2 JPH0723732Y2 JP1988037888U JP3788888U JPH0723732Y2 JP H0723732 Y2 JPH0723732 Y2 JP H0723732Y2 JP 1988037888 U JP1988037888 U JP 1988037888U JP 3788888 U JP3788888 U JP 3788888U JP H0723732 Y2 JPH0723732 Y2 JP H0723732Y2
- Authority
- JP
- Japan
- Prior art keywords
- infrared
- light source
- self
- temperature control
- heater
- 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 - Lifetime
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、赤外線分析計に用いられる光源の改良技術に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an improved technique of a light source used in an infrared analyzer.
上記の赤外線分析計に用いられる光源として、本出願人
は、実開昭61−202057号公報に見られ且つ第５図にも示
したように、熱的安定性を高める上で熱容量を大にした
例えばアルミブロック21に自己温度制御式のヒーターを
内蔵すると共に、このブロック21の保温用の断熱材23を
ケース24に充填し、かつ、前記ブロック21の赤外線放射
面S1に輻射率の高い物質の層25を形成したものを提案し
ている。As a light source used in the above infrared analyzer, the applicant of the present invention, as seen in Japanese Utility Model Laid-Open No. 61-202057 and as shown in FIG. 5, increases the heat capacity in order to enhance the thermal stability. For example, a self-temperature control type heater is built in the aluminum block 21, and the heat insulating material 23 for keeping the temperature of the block 21 is filled in the case 24, and the infrared radiation surface S 1 of the block 21 has a high emissivity. Proposed is the formation of a layer 25 of material.
尚、上記の公開公報には示されていないが、第５図中の
25はサンプルセル、27は赤外線検出器、28はチョッパー
である。Although not shown in the above publication,
Reference numeral 25 is a sample cell, 27 is an infrared detector, and 28 is a chopper.
かかる構成の光源29によれば、輻射率の高い物質の層25
を赤外線放射面S1に形成して、前記ブロック21からの赤
外線輻射エネルギー量を増大させたことで、赤外線分析
計のS/N比を従来に比べて大幅に改善できる利点を有す
る。According to the light source 29 having such a structure, the layer 25 of a substance having a high emissivity is formed.
Is formed on the infrared radiating surface S 1 to increase the amount of infrared radiant energy from the block 21, which has the advantage that the S / N ratio of the infrared analyzer can be greatly improved compared to the conventional case.
〔考案が解決しようとする問題点〕 ところが、上記構成の光源29においては、前記熱容量の
大きいブロック21を加熱する上で容量的に大なるヒータ
ー22が必要で、光源自体が大型になると共にコスト的に
高く付き、更には、ヒーター22並びにブロック21の熱容
量が大きいので、前記輻射率の高い物質の層25が安定し
た赤外線を輻射する温度に達するまでに相当の時間がか
かる点で改善の余地があった。[Problems to be solved by the invention] However, in the light source 29 having the above-mentioned configuration, a heater 22 having a large capacity is required to heat the block 21 having a large heat capacity, which makes the light source itself large and costly. Since the heat capacity of the heater 22 and the block 21 is large, it takes considerable time for the layer 25 of the substance having a high emissivity to reach a temperature at which stable infrared rays are radiated. was there.
本考案は、簡単な改良によって、コンパクトで且つコス
ト的に安価であると共に、安定した赤外線を輻射するま
での時間を大幅に短縮できるようにした赤外線分析計の
光源を提供することを目的としている。An object of the present invention is to provide a light source for an infrared analyzer that is compact and inexpensive in cost by a simple improvement, and that can significantly reduce the time until stable infrared radiation is emitted. .
上記の目的を達成するための本考案による赤外線分析計
の光源は、一端が赤外線検出器と接続されたサンプルセ
ルの他端に接続される自己温度制御式ヒーターを平板状
に形成して、少なくとも前記サンプルセルと対応する一
側面に輻射率の高い耐熱性の物質の層を被着形成してそ
の一側面を赤外線放射面となし、その赤外線放射面にお
ける前記サンプルセルと対応する部分を有効放射面とし
てなることを特徴としている。In order to achieve the above object, the light source of the infrared analyzer according to the present invention has at least one self-temperature control type heater, which has one end connected to the other end of the sample cell connected to the infrared detector, formed in a flat plate shape. A layer of a heat-resistant material having a high emissivity is formed on one side corresponding to the sample cell to form an infrared emitting surface on one side, and a portion of the infrared emitting surface corresponding to the sample cell is effectively emitted. The feature is that it becomes a surface.
上記構成によれば、平板條に形成した自己温度制御式ヒ
ーターの少なくとも前記サンプルセルを対応する一側面
に輻射率の高い耐熱性の物質の層を被着形成してその一
側面を赤外線放射面とし、かつその赤外線放射面におけ
る前記サンプルセルと対応する部分を有効放射面として
いることから、その有効放射面を広く設定することがで
き、エネルギーの大きな赤外線を効率よく輻射させるこ
とができる。According to the above configuration, a layer of a heat-resistant substance having a high emissivity is formed on at least one side surface corresponding to at least the sample cell of the self-temperature control type heater formed on the flat plate and the one side surface is an infrared radiation surface. In addition, since the portion of the infrared radiation surface corresponding to the sample cell is the effective radiation surface, the effective radiation surface can be set wide, and infrared rays having large energy can be efficiently radiated.
以下、本考案の実施の態様を図面に基づいて説明する。
第１図は赤外線分析計を示し、光源１とサンプルセル
２、及び、二つの赤外線検出素子3,4と両検出素子3,4に
入る赤外線を断続するチョッパ７とそれを回転させるモ
ーター５とから成る赤外線検出部６を、前記サンプルセ
ル２の一端と光学的に直列に配置している。Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an infrared analyzer, which includes a light source 1, a sample cell 2, two infrared detecting elements 3 and 4, a chopper 7 for intermittently connecting infrared rays entering both detecting elements 3 and 4, and a motor 5 for rotating the chopper 7. The infrared detecting section 6 consisting of is arranged optically in series with one end of the sample cell 2.
第２図乃至第４図にも示すように、前記光源１は平板状
に形成した自己温度制御式ヒーター11よりなり、その一
側面がサンプルセル２の他端に接続される一方、その他
側面が平板状の断熱材10を介して金属製のヒーターホル
ダー９に取り付けられ、そのヒーターホルダー９の取付
座ａが断熱材13を介して分析計ベース８に固定されてい
る。As shown in FIGS. 2 to 4, the light source 1 is composed of a plate-shaped self-temperature control type heater 11, one side of which is connected to the other end of the sample cell 2, while the other side is It is attached to a metal heater holder 9 via a flat plate heat insulating material 10, and a mounting seat a of the heater holder 9 is fixed to an analyzer base 8 via a heat insulating material 13.
上述の自己温度制御式ヒーター11の一側面には、輻射率
の高い耐熱性の物質の層を被着形成して黒体処理し、そ
の一側面を赤外線放射面となし、その赤外線放射面にお
けるサンプルセル２と対応する円形部分を有効放射面Ｓ
としている。このように自己温度制御式ヒーター11を平
板状にコンパクトに形成して、赤外線放射面を広く形成
することにより、その中に有効放射面Ｓを大きく設定す
ることができ、エネルギーの大きい赤外線を効率よく輻
射させることができる。On one side of the self-temperature control type heater 11 described above, a layer of a heat-resistant substance having a high emissivity is deposited and black-body treated, and one side thereof is used as an infrared radiation surface. The circular portion corresponding to the sample cell 2 is the effective emission surface S
I am trying. By thus forming the self-temperature control heater 11 compactly in a flat plate shape and widening the infrared radiation surface, it is possible to set a large effective radiation surface S therein, and the infrared rays with large energy can be efficiently transmitted. Can radiate well.
また、前記自己温度制御式のヒーター11とは、或る温度
以上に高くなると急に抵抗値が増加する正の抵抗温度係
数を有する抵抗体から成るヒーターを言い、素子自体が
温度制御を行うもので、例えばポジスタ（村田製作所製
の商品名で、その輻射率は約0.1）を利用でき、赤外線
分析にとって必要なエネルギー量の赤外線が輻射される
範囲において最小必要限の大きさを選択すればよい。Further, the self-temperature control type heater 11 is a heater composed of a resistor having a positive resistance temperature coefficient whose resistance value suddenly increases when the temperature rises above a certain temperature, and the element itself controls the temperature. So, for example, you can use Posista (brand name made by Murata Manufacturing Co., Ltd., its emissivity is about 0.1), and select the minimum required size in the range where infrared rays of the energy amount necessary for infrared analysis are radiated. .
また、前記輻射率の高い物質の層12は、無機質耐熱塗料
（例えば、住友化学工業株式会社製の商品名；スミセラ
ム‐P400B）のコーティングにより達成されている。Further, the layer 12 of the substance having a high emissivity is achieved by coating an inorganic heat resistant paint (for example, trade name of Sumitomo Chemical Co., Ltd .; Sumiceram-P400B).
このように、無機質耐熱塗料をコーティングしてヒータ
ー自体に輻射率の高い物質の層12を形成すると、当該輻
射率の高い物質の層12の輻射率が0.83であるから、前記
自己温度制御式ヒーター11の輻射率の約8.3倍となり、
ヒーターそのものの加熱面を赤外線放射面にする場合と
比較して、赤外線輻射エネルギー量が著しく増加するの
で、赤外線分析計のS/N比を改善することができる。As described above, when the layer 12 of the substance having a high emissivity is formed on the heater itself by coating the inorganic heat-resistant paint, the emissivity of the layer 12 of the substance having a high emissivity is 0.83. It is about 8.3 times the emissivity of 11,
Compared with the case where the heating surface of the heater itself is an infrared radiation surface, the amount of infrared radiation energy is significantly increased, so that the S / N ratio of the infrared analyzer can be improved.
上記の構成によれば、電流を流して前記自己温度制御式
ヒーター11を発熱させることで、当該ヒーターそのもの
の熱容量を基にして、前記輻射率の高い物質の層12から
エネルギー量の大なる赤外線が輻射される。According to the above configuration, by supplying a current to heat the self-temperature control type heater 11, infrared rays having a large amount of energy from the layer 12 of the substance having a high emissivity are generated based on the heat capacity of the heater itself. Is radiated.
而して、従来のように、アルミブロックを備えさせない
ので、前記自己温度制御式ヒーター11を熱容量の小さな
ものにでき、延いては、当該ヒーター自体の熱容量が小
さいことから、前記輻射率の高い物質の層12が安定した
赤外線を輻射する温度に達するまでの時間が従来に比べ
て大幅に短縮される。Thus, unlike the conventional case, since the aluminum block is not provided, the self-temperature control type heater 11 can have a small heat capacity, and further, since the heat capacity of the heater itself is small, the emissivity is high. The time required for the material layer 12 to reach a temperature at which stable infrared rays are radiated is significantly shortened as compared with the conventional case.
ところで、前記自己温度制御式ヒーター11を熱容量の小
さなものにすると、雰囲気温度や雰囲気の流れ等の影響
でヒーター自体の温度変化が起こりやすくなる懸念があ
る。しかし、実験の結果では、雰囲気の変化にかかわら
ず、自己温度制御式ヒーター11は極く短時間で所定の温
度に自己制御し、殆ど雰囲気に影響されないことが判明
している。これは、前記ヒーター自体が自己の温度変化
を敏感に応答する温度制御の特性を有し、かつ、前記自
己温度制御式ヒーター11の容量を必要最小限の小さなも
のにしたことによる。By the way, if the self-temperature control type heater 11 has a small heat capacity, there is a concern that the temperature of the heater itself is likely to change due to the influence of the atmospheric temperature and the flow of the atmosphere. However, as a result of the experiment, it has been found that the self-temperature control type heater 11 self-controls to a predetermined temperature in an extremely short time regardless of changes in the atmosphere and is hardly affected by the atmosphere. This is because the heater itself has the characteristic of temperature control that sensitively responds to its own temperature change, and the capacity of the self-temperature control type heater 11 is made as small as necessary.
以上説明したように本考案による赤外線分析計の光源に
よれば、従来のように、アルミ等のブロックを用いず
に、自己温度制御式ヒーターを平板状に形成してコンパ
クトなものとし、その一側面に輻射率の高い耐熱性の物
質の層を被着形成して黒体処理し赤外線放射面としてい
るので、従来のように、大きなブロックが不要でそれを
加熱する必要がなく、自己温度制御式ヒーターを熱容量
の小さいコンパクトなものにすることができ、かつ、そ
の赤外線放射面内にサンプルセルと対応する有効放射面
を大きく設定することができ、エネルギーの大きい赤外
線を効率よく輻射させることができ、自己温度制御式ヒ
ーターを熱容量の小さいコンパクトなものにすることが
できる。As described above, according to the light source of the infrared analyzer according to the present invention, unlike the conventional case, the self-temperature control type heater is formed in a flat plate shape without using a block of aluminum or the like to make it compact. Since a layer of heat-resistant material with high emissivity is formed on the side surface and treated with a black body to form an infrared radiating surface, there is no need for a large block and it is not necessary to heat it as in the past, and self-temperature control is possible. The heater can be made compact with a small heat capacity, and the effective radiation surface corresponding to the sample cell can be set large in the infrared radiation surface, and infrared rays with large energy can be efficiently radiated. Therefore, the self-temperature control type heater can be made compact with a small heat capacity.
また、前記自己温度制御式ヒーターを小さなものにした
ことで、該ヒーターの昇温を短時間で行わせられ、延い
ては、輻射率の高い物質の層が安定した赤外線を輻射す
る温度に達するまでの時間を従来に比べて大幅に短縮で
きる。Further, by making the self-temperature control type heater small, it is possible to raise the temperature of the heater in a short time, and eventually reach a temperature at which a layer of a substance having a high emissivity emits stable infrared rays. It is possible to significantly shorten the time until the conventional method.
そして、自己温度制御式ヒーターが自己の温度変化に敏
感に応答する温度制御特性を有することから、雰囲気の
温度や流れ等に殆ど影響されずに、自己を熱的に安定し
た所定の温度下に置くことができ、光源のコンパクト化
とコストダウン、並びに、安定した赤外線を輻射するま
での時間の大幅短縮を達成できるに至ったのである。Further, since the self-temperature control type heater has a temperature control characteristic that responds sensitively to its own temperature change, the self-temperature control heater can be kept at a predetermined temperature that is thermally stable without being substantially affected by the temperature and flow of the atmosphere. It can be placed, and the light source can be made compact, the cost can be reduced, and the time until stable infrared radiation can be greatly reduced.
第１図は赤外線分析計の断面図、第２図は光源の斜視
図、第３図は光源の断面図、第４図は光源の正面図であ
る。そして第５図は、従来の光源の構成を示す赤外線分
析計の断面図である。 ９……ヒーターホルダー、11……自己温度制御式ヒータ
ー、12……輻射率の高い物質の層、Ｓ……赤外線放射
面。1 is a sectional view of an infrared analyzer, FIG. 2 is a perspective view of a light source, FIG. 3 is a sectional view of a light source, and FIG. 4 is a front view of the light source. And FIG. 5 is a sectional view of an infrared analyzer showing the structure of a conventional light source. 9 ... Heater holder, 11 ... Self-temperature control type heater, 12 ... Layer of material with high emissivity, S ... Infrared radiation surface.
Claims (1)
セルの他端に接続される自己温度制御式ヒーターを平板
状に形成して、少なくとも前記サンプルセルと対応する
一側面に輻射率の高い耐熱性の物質の層を被着形成して
その一側面を赤外線放射面となし、その赤外線放射面に
おける前記サンプルセルと対応する部分を有効放射面と
してなることを特徴とする赤外線分析計の光源。1. A self-temperature control type heater, one end of which is connected to the other end of a sample cell connected to an infrared detector, is formed in a flat plate shape, and at least one side surface corresponding to the sample cell has a high emissivity. A light source for an infrared analyzer, characterized in that a layer of a heat-resistant substance is formed by deposition, one side surface thereof serves as an infrared radiation surface, and a portion of the infrared radiation surface corresponding to the sample cell serves as an effective radiation surface. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988037888U JPH0723732Y2 (en) | 1988-03-19 | 1988-03-19 | Infrared analyzer light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988037888U JPH0723732Y2 (en) | 1988-03-19 | 1988-03-19 | Infrared analyzer light source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01140155U JPH01140155U (en) | 1989-09-26 |
| JPH0723732Y2 true JPH0723732Y2 (en) | 1995-05-31 |
Family
ID=31264462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988037888U Expired - Lifetime JPH0723732Y2 (en) | 1988-03-19 | 1988-03-19 | Infrared analyzer light source |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0723732Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6146431Y2 (en) * | 1979-10-02 | 1986-12-27 | ||
| JPS61202057U (en) * | 1985-06-06 | 1986-12-18 |
-
1988
- 1988-03-19 JP JP1988037888U patent/JPH0723732Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01140155U (en) | 1989-09-26 |
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