JPH0345157Y2 - - Google Patents
Info
- Publication number
- JPH0345157Y2 JPH0345157Y2 JP1982090297U JP9029782U JPH0345157Y2 JP H0345157 Y2 JPH0345157 Y2 JP H0345157Y2 JP 1982090297 U JP1982090297 U JP 1982090297U JP 9029782 U JP9029782 U JP 9029782U JP H0345157 Y2 JPH0345157 Y2 JP H0345157Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- temperature
- magnetic
- sensitive element
- wall plate
- 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
- 230000005291 magnetic effect Effects 0.000 claims description 43
- 230000004907 flux Effects 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 13
- 239000000696 magnetic material Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000005298 paramagnetic effect Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、永久磁石に感温磁性体と感磁性素子
とを組合わせた温度検出装置の構造に関する。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to the structure of a temperature detection device in which a permanent magnet is combined with a temperature-sensitive magnetic material and a magnetism-sensitive element.
この種の温度検出装置としては例えば第１図に
示すように、相対向した二枚の強磁性体板１，１
の一端間に永久磁石２と感磁性体３とを挾み込
み、かつ他端間に感磁性素子４を配置したものが
ある。
For example, as shown in FIG. 1, this type of temperature detection device consists of two opposing ferromagnetic plates 1,
There is one in which a permanent magnet 2 and a magnetically sensitive body 3 are sandwiched between one end, and a magnetically sensitive element 4 is arranged between the other end.
その温度検出装置によつて例えばダクト内部の
温度を検出する場合には、一般には第２図に示す
ように、ダクト５の壁面に開口６，６を設け、こ
の開口６に温度検出装置７を貫通させている。し
かしその場合には、開口６の加工およびその部分
の気密シールを要求されるため工事が繁雑とな
る。 When the temperature inside the duct is to be detected using the temperature detecting device, generally, as shown in FIG. It penetrates. However, in that case, the construction work becomes complicated because it requires machining the opening 6 and sealing the opening 6 airtight.
またダクトの内面に永久磁石と感温磁性体との
組合せ体を配置する一方、この組み合わせ体に対
向するダクト外面に感磁性素子を設けることもあ
る。しかしその場合には、ダクト壁によつて感磁
性素子への磁束作用が阻害されることになるの
で、感磁性素子の出力が小さいという欠点が生じ
る。 Further, while a combination of a permanent magnet and a temperature-sensitive magnetic material is disposed on the inner surface of the duct, a magnetically sensitive element may be provided on the outer surface of the duct opposite to this combination. However, in that case, the magnetic flux action on the magnetically sensitive element is obstructed by the duct wall, resulting in a disadvantage that the output of the magnetically sensitive element is small.
本考案は壁板に穴あけ、及び気密シールなどの
工事を施すことなく壁板内面の温度を高い出力で
検出しうる温度検出装置を提供することを目的と
する。 An object of the present invention is to provide a temperature detection device that can detect the temperature of the inner surface of a wall board with a high output without drilling holes in the wall board or performing any work such as airtight sealing.
本考案によれば温度検出装置において、検出温
度に対応したキユリー点をもつＵ字状の感温磁性
体と該感温磁性体の凹部に両磁極面が覆われるよ
うに内設した大きな磁力の第１の磁石と、該第１
の磁石の側面に異極同志が隣接するよう当接させ
た、上記第１の磁石よりも小さな磁力の第２の磁
石とを含む磁石組立体を壁板の片面に設け、かつ
該壁板の反対面に該磁石組立体に対向して、感磁
性素子と該感磁性素子に上記永久磁石からの磁束
を集束して作用させるヨークとの組合せよりなる
検出部を設け、該壁板を介して温度検出できるよ
うにしてあることを特徴とする温度検出装置が得
られる。
According to the present invention, in a temperature detection device, a U-shaped temperature-sensitive magnetic body having a Curie point corresponding to the detected temperature and a large magnetic force provided inside the concave portion of the temperature-sensitive magnetic body so that both magnetic pole faces are covered. a first magnet;
and a second magnet having a smaller magnetic force than the first magnet, which is brought into contact with the side surface of the magnet so that its opposite polarity is adjacent to the side surface of the wall plate, and a magnet assembly is provided on one side of the wall plate. On the opposite surface, facing the magnet assembly, there is provided a detecting section consisting of a combination of a magnetically sensitive element and a yoke that focuses and acts on the magnetic flux from the permanent magnet on the magnetically sensitive element; A temperature detection device is obtained which is characterized in that it is capable of detecting temperature.
第３図は本考案の一実施例による温度検出装置
の使用状態を示す。第３図において、磁力の互に
異なる２個の棒状磁石１９，１９′を磁極の向き
を互に逆向きにして側面で密着させ、Ｕ字状の感
温磁性体１１の凹部に大きな磁力の磁石１９′を
その磁極面を覆うように内設させている。感温磁
性体１１は検出温度に対応するキユリー点をも
つ。こうして磁石組立体１３が形成されている。
FIG. 3 shows how the temperature detection device according to an embodiment of the present invention is used. In FIG. 3, two bar-shaped magnets 19 and 19' with different magnetic forces are brought into close contact with each other on the sides with their magnetic poles facing in opposite directions, and a large magnetic force is applied to the recess of the U-shaped temperature-sensitive magnetic body 11. A magnet 19' is disposed inside so as to cover the magnetic pole surface. The temperature-sensitive magnetic material 11 has a Curie point corresponding to the detected temperature. The magnet assembly 13 is thus formed.
このような磁石組立体１３は常磁性材料又は非
磁性材料よりなる例えばダクトの壁板１４の内面
に小さな磁力の磁石１９の磁石１９′と反対側の
側面を接触させて取り付けられる。さらに感磁性
素子（例えばホール素子あるいは磁気抵抗素子）
１５が壁板１４の外面の磁石組立体１３に対向す
る個所に設けられている。感磁性素子１５の磁界
印加面のそれぞれには、Ｌ字状のヨーク１６が、
その一端を磁石１９の磁極面近傍にそれぞれ対向
しかつ壁板１４の外面に接するように接合されて
いる。 Such a magnet assembly 13 is attached to the inner surface of a wall plate 14 of a duct, for example, made of a paramagnetic or non-magnetic material, with the side surface of the magnet 19 having a small magnetic force, opposite to the magnet 19', in contact with the inner surface. Furthermore, magnetically sensitive elements (e.g. Hall elements or magnetoresistive elements)
15 is provided on the outer surface of the wall plate 14 at a location facing the magnet assembly 13. An L-shaped yoke 16 is provided on each of the magnetic field application surfaces of the magnetically sensitive element 15.
One end thereof is connected to the vicinity of the magnetic pole face of the magnet 19 so as to face each other and to be in contact with the outer surface of the wall plate 14 .
壁板１４の内側の温度が低く感温磁性体１１の
温度がキユリー点未満であると、大きな磁力の磁
石１９′からの磁束が感温磁性体１１によつて短
絡されるので、小さな磁力の磁石１９のみからの
磁束の大部分がヨーク１６で集束されて感磁性素
子１５を通ることになり、その結果、感磁性素子
１５からは第４図に示すように高い出力電圧
VHが発生する。 When the temperature inside the wall plate 14 is low and the temperature of the temperature-sensitive magnetic material 11 is below the Curie point, the magnetic flux from the magnet 19' with a large magnetic force is short-circuited by the temperature-sensitive magnetic material 11, so that the magnetic flux with a small magnetic force is short-circuited by the temperature-sensitive magnetic material 11. Most of the magnetic flux from the magnet 19 alone is focused by the yoke 16 and passes through the magnetically sensitive element 15, resulting in a high output voltage from the magnetically sensitive element 15 as shown in FIG.
VH occurs.
一方、壁板１４の内側温度が上昇して感温磁性
体１１の温度がキユリー点に達すると、磁石１９
からの磁束に加えて磁石１９′からの磁束もヨー
ク１６により集束されて感磁性素子１５に作用す
る。しかもこれらの磁束は互に逆向きであるので
打消し合い、結果として感磁性素子１５に作用す
る正味の磁束は僅かだけであり、したがつて第４
図に示すように低い出力電圧VHhになる。 On the other hand, when the temperature inside the wall plate 14 rises and the temperature of the temperature-sensitive magnetic body 11 reaches the Curie point, the magnet 19
In addition to the magnetic flux from the magnet 19', the magnetic flux from the magnet 19' is also focused by the yoke 16 and acts on the magnetically sensitive element 15. Moreover, since these magnetic fluxes are in opposite directions, they cancel each other out, and as a result, the net magnetic flux that acts on the magnetically sensitive element 15 is only a small amount.
As shown in the figure, the output voltage becomes low V Hh .
第５図に本実施例の場合の感磁性素子１５の出
力電圧温度特性を示す。出力電圧レベルの変化を
検出することにより温度を検出することができ
る。 FIG. 5 shows the output voltage temperature characteristics of the magnetically sensitive element 15 in this example. Temperature can be detected by detecting changes in the output voltage level.
第６図に本考案による温度検出装置のダクト５
への取りつけの一例を示す。即ち、ダクト５の壁
板の内側面に磁石組立体１３が固着され、また外
側面に感磁性素子１５およびヨーク１６が固着さ
れている。 Fig. 6 shows the duct 5 of the temperature detection device according to the present invention.
An example of installation is shown below. That is, a magnet assembly 13 is fixed to the inner surface of the wall plate of the duct 5, and a magnetically sensitive element 15 and a yoke 16 are fixed to the outer surface.
以上に説明したように本考案によれば常磁性の
壁板に穴あけ、気密シールなどの工事を施すこと
なく壁板の内側の温度を検出することができ、壁
板の外側において高い温度検出出力を得ることの
できる温度検出装置を提供できる。
As explained above, according to the present invention, it is possible to detect the temperature inside the paramagnetic wall board without drilling holes in the wall board, installing airtight seals, etc., and outputting a high temperature detection output on the outside of the wall board. It is possible to provide a temperature detection device that can obtain the following.
さらに温度上昇により感磁性素子への磁界が減
少するようにしているため、取付時（常温中）に
て感磁性素子の磁界が印加されていることにな
り、したがつて感磁性素子の出力を見ながら最適
の位置調整が可能である。 Furthermore, since the magnetic field to the magnetically sensitive element is reduced as the temperature rises, the magnetic field of the magnetically sensitive element is applied when it is installed (at room temperature), and therefore the output of the magnetically sensitive element is reduced. You can adjust the optimal position while looking at the image.
また、検出温度がキユリー点に達したときには
感磁性素子に互いに逆向きの磁束が作用して打消
し合うため、両磁石の磁力を選ぶことにより検出
温度がキユリー点に達したときに感磁性素子に作
用する正味の磁束を僅かな量に設定することがで
き、また特に、その正味の磁束を零にすることも
可能であり、高温時の出力電圧VHhに対する低温
時の出力電圧VHの比を大きくする事が出来る
ため、感磁性素子の出力の電気的処理において有
利である。 In addition, when the detected temperature reaches the Curie point, magnetic fluxes in opposite directions act on the magnetic element and cancel each other out, so by selecting the magnetic forces of both magnets, when the detected temperature reaches the Curie point, the magnetic flux acts on the magnetic element and cancels each other out. It is possible to set the net magnetic flux acting on a small amount, and in particular, it is also possible to make the net magnetic flux zero, so that the output voltage V H at low temperature with respect to the output voltage V Hh at high temperature can be set to a small amount. Since the ratio can be increased, this is advantageous in electrical processing of the output of the magnetically sensitive element.
第１図は従来の温度検出装置の一例を示す平面
図、第２図は従来の温度検出装置のダクトへの取
りつけの一例を示す斜視図、第３図は本考案の一
実施例の平面断面図、第４図は感磁性素子の出力
電圧対磁束密度特性図、第５図は第３図の感磁性
素子の出力電圧対温度特性図、第６図は本考案に
よる温度検出装置のダクトへの取りつけの一例を
示す斜視図である。
１１……感温磁性体、１９，１９′……棒状磁
石、１３……磁石組立体、１４……常磁性壁板、
１５……感磁性素子、１６……ヨーク。
Fig. 1 is a plan view showing an example of a conventional temperature detecting device, Fig. 2 is a perspective view showing an example of how the conventional temperature detecting device is attached to a duct, and Fig. 3 is a plan cross section of an example of the present invention. Figure 4 is an output voltage vs. magnetic flux density characteristic diagram of the magnetically sensitive element, Figure 5 is an output voltage vs. temperature characteristic diagram of the magnetically sensitive element in Figure 3, and Figure 6 is a diagram of the duct of the temperature detection device according to the present invention. It is a perspective view showing an example of attachment. 11... Temperature-sensitive magnetic material, 19, 19'... Bar magnet, 13... Magnet assembly, 14... Paramagnetic wall plate,
15...Magnetic sensitive element, 16...Yoke.
Claims (1)
ユリー点をもつＵ字状の感温磁性体と該感温磁性
体の凹部に両磁極面が覆われるように内設した大
きな磁力の第１の磁石と、該第１の磁石の側面に
異極同志が隣接するよう当接させた、上記第１の
磁石よりも小さな磁力の第２の磁石とを含む磁石
組立体を壁板の片面に設け、かつ該壁板の反対面
に該磁石組立体に対向して、感磁性素子と該感磁
性素子に上記永久磁石からの磁束を集束して作用
させるヨークとの組合せよりなる検出部を設け、
該壁板を介して温度検出できるようにしてあるこ
とを特徴とする温度検出装置。 The temperature detection device includes: a U-shaped temperature-sensitive magnetic body having a Curie point corresponding to the detected temperature; a first magnet with a large magnetic force disposed inside the recess of the temperature-sensitive magnetic body so that both magnetic pole faces are covered; , a magnet assembly is provided on one side of the wall plate, and includes a second magnet having a smaller magnetic force than the first magnet, the second magnet having a magnetic force smaller than that of the first magnet, which is brought into contact with the side surface of the first magnet so that its opposite polarities are adjacent to each other, and Providing on the opposite side of the wall plate, facing the magnet assembly, a detection unit consisting of a combination of a magnetically sensitive element and a yoke that focuses and acts on the magnetic flux from the permanent magnet on the magnetically sensitive element;
A temperature detection device characterized in that temperature can be detected through the wall plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9029782U JPS58193228U (en) | 1982-06-18 | 1982-06-18 | temperature detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9029782U JPS58193228U (en) | 1982-06-18 | 1982-06-18 | temperature detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58193228U JPS58193228U (en) | 1983-12-22 |
| JPH0345157Y2 true JPH0345157Y2 (en) | 1991-09-24 |
Family
ID=30098822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9029782U Granted JPS58193228U (en) | 1982-06-18 | 1982-06-18 | temperature detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58193228U (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS489182U (en) * | 1971-06-11 | 1973-02-01 | ||
| JPS56168889U (en) * | 1980-05-12 | 1981-12-14 |
-
1982
- 1982-06-18 JP JP9029782U patent/JPS58193228U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58193228U (en) | 1983-12-22 |
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