JPS6239326Y2 - - Google Patents
Info
- Publication number
- JPS6239326Y2 JPS6239326Y2 JP1665481U JP1665481U JPS6239326Y2 JP S6239326 Y2 JPS6239326 Y2 JP S6239326Y2 JP 1665481 U JP1665481 U JP 1665481U JP 1665481 U JP1665481 U JP 1665481U JP S6239326 Y2 JPS6239326 Y2 JP S6239326Y2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- cylindrical body
- reed switch
- gap
- sensitive magnetic
- 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 27
- 235000014676 Phragmites communis Nutrition 0.000 claims description 21
- 238000007664 blowing Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 3
- 230000005415 magnetization Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 8
- 230000004907 flux Effects 0.000 description 6
- 238000004804 winding Methods 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000005294 ferromagnetic effect Effects 0.000 description 2
- 230000005408 paramagnetism Effects 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005307 ferromagnetism Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005298 paramagnetic effect Effects 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
- Measuring Volume Flow (AREA)
Description
【考案の詳細な説明】
本考案はリードスイツチと環状永久磁石および
感温磁性金属製線材とを組合せた送風検知装置に
関する。[Detailed Description of the Invention] The present invention relates to an air blow detection device that combines a reed switch, an annular permanent magnet, and a temperature-sensitive magnetic metal wire.
従来、リードスイツチと永久磁石および感温磁
性体を組合せた温度スイツチを利用した送風検知
装置は種々提供されている。その一例を第１図を
参照して説明すると、Ｕ字形の所定のキユリー点
を有する感温磁性体１の凹所に棒状永久磁石２を
内設し、永久磁石側にリードスイツチ３を添設し
てなる温度スイツチと、抵抗発熱体４とを、リー
ドスイツチ３と反対側の感温磁性体１との間に僅
かな間隙をもたせた状態にて基板（図示省略）に
取付けた構成のものがある。 Conventionally, various air blow detection devices have been provided that utilize a temperature switch that is a combination of a reed switch, a permanent magnet, and a temperature-sensitive magnetic material. An example of this will be explained with reference to FIG. 1. A rod-shaped permanent magnet 2 is installed inside the recess of a U-shaped temperature-sensitive magnetic material 1 having a predetermined Kyrie point, and a reed switch 3 is attached to the permanent magnet side. A temperature switch consisting of a reed switch 3 and a resistance heating element 4 are attached to a substrate (not shown) with a slight gap between the reed switch 3 and the temperature-sensitive magnetic body 1 on the opposite side. There is.
この装置は、送風のある時は発熱体４からの熱
が僅かしか感温磁性体１に伝達されず、したがつ
て感温磁性体１の温度はキユリー点未満であつて
感温磁性体１は強磁性を呈したままであり、棒状
永久磁石２からの磁束はリードスイツチ３の接点
部を流れず接点が開離状態にある。しかし送風が
無くなると発熱体４からの熱が間隙を介して感温
磁性体１に伝達され、感温磁性体１の温度がその
キユリー点に達すると常磁性となることにより永
久磁石２からの磁束の大部分がリードスイツチ３
側に流れて接点が閉成されるものである。 In this device, when air is blown, only a small amount of heat from the heating element 4 is transferred to the temperature-sensitive magnetic body 1, so that the temperature of the temperature-sensitive magnetic body 1 is below the Curie point. remains ferromagnetic, and the magnetic flux from the bar-shaped permanent magnet 2 does not flow through the contact portion of the reed switch 3, and the contact is in an open state. However, when the air is no longer blown, the heat from the heating element 4 is transferred to the temperature-sensitive magnetic body 1 through the gap, and when the temperature of the temperature-sensitive magnetic body 1 reaches its Curie point, it becomes paramagnetic and the heat from the permanent magnet 2 is transmitted to the temperature-sensitive magnetic body 1 through the gap. Most of the magnetic flux is at reed switch 3
It flows to the side and closes the contact.
さてこの構成では温度スイツチと発熱体４とを
並設するため寸法が大きくなるだけでなく、発熱
体４を必ず下側にしてしかもこの配列を送風に対
して垂直になるよう方向性を考慮して設置しなけ
ればならず、また熱伝達が間隙を介して行なわれ
るため応答性が悪いなどの欠点がある。 Now, in this configuration, the temperature switch and the heating element 4 are arranged side by side, which not only increases the size, but also the directionality must be considered so that the heating element 4 is always on the lower side and the arrangement is perpendicular to the air blowing. In addition, heat transfer occurs through gaps, resulting in poor response.
本考案の目的はこのような従来の欠点を除去し
ようとするものであり、小型で送風に対する方向
性の制約の少ない、応答性の良い送風検知装置を
提供することにある。 The purpose of the present invention is to eliminate such conventional drawbacks, and is to provide a small-sized air blowing detection device with less restriction on the directionality of air blowing and good responsiveness.
本考案の特徴は感温磁性金属製線材をコイル状
に密着巻きして成形した筒状体を感温磁性体と発
熱体とに兼用することにある。 The feature of the present invention is that a cylindrical body formed by closely winding a temperature-sensitive magnetic metal wire into a coil can be used both as a temperature-sensitive magnetic body and as a heat generating body.
以下に本考案の実施例を説明する。 Examples of the present invention will be described below.
第２図は本考案の一実施例を示す。 FIG. 2 shows an embodiment of the present invention.
図において、所要のキユリー点をもつ感温磁性
金属材料よりなり、表面にアルミナあるいはポリ
イミツドなどの耐熱性のよい絶縁性被膜を施した
細線をコイル状に密着巻きして成形した２個のほ
ぼ同じ大きさの筒状体１１，１１′を、リードス
イツチ３の外周にその接点に対応する部分に間隙
Ｇをおいて装着している。さらに筒状体１１，１
１′の側端に密着させて軸方向に磁極をもつ環状
永久磁石１２，１２′を磁化方向を同一方向に向
けてリードスイツチ３の外周に装着している。筒
状体１１，１１′は細線の一方の端末を互に接続
し他方の端末を入力端子１３，１４として、通電
した時コイル状の筒状体１１，１１′により生ず
る磁界が互に打消す（無誘導になる）ように、例
えば筒状体１１を時計方向に巻回し筒状体１１′
を反時計方向に巻回して成形されている。 In the figure, two almost identical wires are made of a temperature-sensitive magnetic metal material with the required Kyrie point, and are formed by closely winding a fine wire into a coil shape with a heat-resistant insulating coating such as alumina or polyimide on the surface. Cylindrical bodies 11 and 11' of the same size are attached to the outer periphery of the reed switch 3 with a gap G between the parts corresponding to the contacts thereof. Furthermore, the cylindrical body 11,1
Annular permanent magnets 12, 12' having magnetic poles in the axial direction are mounted on the outer periphery of the reed switch 3 in close contact with the side ends of the reed switch 1' with their magnetization directions oriented in the same direction. The cylindrical bodies 11, 11' have thin wires with one end connected to each other and the other terminals used as input terminals 13, 14, so that when energized, the magnetic fields generated by the coiled cylindrical bodies 11, 11' cancel each other out. For example, the cylindrical body 11 is wound clockwise so that the cylindrical body 11'
It is formed by winding it counterclockwise.
次に動作原理を説明する。 Next, the operating principle will be explained.
入力端子１３，１４に電源電圧を印加すると筒
状体１１，１１′が通電発熱する。送風がある場
合、発熱量の多くが筒状体１１，１１′の外周及
び間隙Ｇの対向端面から奪い去られて筒状体自身
の温度はそのキユリー点未満に維持され筒状体１
１，１１′が強磁性体であるので、磁石１２，１
２′の対向磁極間の磁束は筒状体１１′を通り間隙
Ｇから洩れてリードスイツチ３の接点部を通りさ
らに筒状体１１へと通過する。一方磁石１２，１
２′の外側磁極からの磁束は磁石１２からリード
スイツチ３のリードを経て磁石１２′に到り、結
局リードスイツチ３の接点部ではこれら磁束が互
に打消し合い接点は開離状態にある。 When a power supply voltage is applied to the input terminals 13 and 14, the cylindrical bodies 11 and 11' are energized and generate heat. When air is blown, most of the calorific value is taken away from the outer periphery of the cylindrical bodies 11, 11' and the opposing end faces of the gap G, and the temperature of the cylindrical body itself is maintained below its Curie point.
Since magnets 1 and 11' are ferromagnetic, magnets 12 and 1
The magnetic flux between the opposing magnetic poles 2' leaks through the gap G through the cylindrical body 11', passes through the contact portion of the reed switch 3, and further passes into the cylindrical body 11. On the other hand, magnet 12,1
The magnetic flux from the outer magnetic pole 2' reaches the magnet 12' via the lead of the reed switch 3 from the magnet 12, and eventually these magnetic fluxes cancel each other out at the contact portion of the reed switch 3, and the contact is in an open state.
送風がない場合、筒状体１１，１１′による発
熱量は僅かしか周囲に放散されず、筒状体自身の
温度が上昇する。温度がそのキユリー点に達する
と、筒状体１１，１１′は常磁性を呈するので磁
気的にはリードスイツチ３の両端近傍に磁石１
２，１２′だけが存在する状態となり、リードス
イツチ３の接点部では磁石１２，１２′の対向磁
極からの洩れ磁束が支配的となり接点が閉成す
る。ここでリードスイツチ３のリード端子を電源
を介してブザーやランプに接続することによつて
送風の異常を検出報知することができる。 When no air is blown, only a small amount of the heat generated by the cylindrical bodies 11, 11' is dissipated to the surroundings, and the temperature of the cylindrical bodies themselves increases. When the temperature reaches its Curie point, the cylindrical bodies 11 and 11' exhibit paramagnetism, so magnetically, magnets 1 are placed near both ends of the reed switch 3.
Only the magnets 2 and 12' are present, and the leakage magnetic flux from the opposing magnetic poles of the magnets 12 and 12' becomes dominant at the contact portion of the reed switch 3, and the contact is closed. By connecting the lead terminal of the reed switch 3 to a buzzer or lamp via a power source, abnormality in air blowing can be detected and reported.
ところで第２図に示した構造では発熱時筒状体
１１，１１′の内側に向うにつれて温度が高くな
ることは避けられない。これに対しリードスイツ
チ３の外面と筒状体１１，１１′および環状磁石
１２，１２′の各内面とを密着させず空隙を設け
て、送風が間隙Ｇからこの空隙をリードスイツチ
３の軸方向へと通るようにすることが考えられ
る。 However, in the structure shown in FIG. 2, when heat is generated, it is inevitable that the temperature increases toward the inside of the cylindrical bodies 11, 11'. In contrast, the outer surface of the reed switch 3 and the inner surfaces of the cylindrical bodies 11, 11' and the annular magnets 12, 12' are not brought into close contact with each other, but a gap is provided so that the air is blown from the gap G through this gap in the axial direction of the reed switch 3. It is conceivable to make it pass through.
第３図はこの点を改良した本考案の第二の実施
例を示す。図において、感温磁性体兼発熱体であ
る筒状体１１，１１′を内層１１−１，１１′−１
と外層１１−２，１１′−２に分け、内層１１−
１，１１′−１には外層１１−２，１１′−２より
僅かに太い、例えば直径0.20mmに対し0.25mmのよ
うな線材を用いて筒状体を成形し、内層部の抵抗
を小さくすることにより発熱量を抑制して筒状体
の径方向の温度勾配を小さくしたものである。こ
の構造によれば第１の実施例に比して使用送風温
度の範囲を広くすることができる。 FIG. 3 shows a second embodiment of the present invention that improves this point. In the figure, cylindrical bodies 11 and 11' which are temperature-sensitive magnetic bodies and heat generating bodies are arranged in inner layers 11-1 and 11'-1.
and outer layer 11-2, 11'-2, and inner layer 11-2.
For 1, 11'-1, a cylindrical body is formed using a wire rod that is slightly thicker than the outer layer 11-2, 11'-2, for example, 0.25 mm in diameter compared to 0.20 mm, to reduce the resistance of the inner layer. This suppresses the amount of heat generated and reduces the temperature gradient in the radial direction of the cylindrical body. According to this structure, the range of air blowing temperatures that can be used can be widened compared to the first embodiment.
第４図は本考案の第３の実施例を示し、感温磁
性体兼発熱筒状体１１，１１′を第３図と同様に
径方向に二層とするが、外層１１−２，１１′−
２を構成する線材のキユリー点より僅かに高いキ
ユリー点をもつ線材で内層１１−１，１１′−１
を構成して、筒状体１１，１１′全体がほぼ一様
に強磁性から常磁性（または逆）に変化するよう
にして動作特性の再現性を高めたものである。 FIG. 4 shows a third embodiment of the present invention, in which the temperature-sensitive magnetic body/heating cylindrical body 11, 11' has two layers in the radial direction as in FIG. 3, but the outer layers 11-2, 11 ′−
The inner layer 11-1, 11'-1 is a wire material having a Curie point slightly higher than that of the wire material composing the inner layer 11-1, 11'-1.
The reproducibility of the operating characteristics is improved by making the entire cylindrical body 11, 11' change almost uniformly from ferromagnetism to paramagnetism (or vice versa).
以上述べてきたように、本考案による送風検知
装置は感温磁性体が発熱体を兼ねており、熱伝達
の遅れがなく応答性に優れ、小型であり、また送
風に対する設置方向の制約が少ないなどの多くの
利点を有している。 As described above, the airflow detection device according to the present invention uses a temperature-sensitive magnetic material that also serves as a heating element, has no delay in heat transfer, has excellent responsiveness, is compact, and has fewer restrictions on the installation direction for airflow. It has many advantages such as:
なお間隙Ｇを設けず送風のある時リードスイツ
チ３の接点が閉成し、送風がない時、接点が開離
するブレークタイプの構成も考えられるが、この
場合感温材料の長さを短縮しなければならず感温
磁性金属材料の比抵抗と巻線容積との関係で、前
述したメイクタイプと同様の発熱をさせるために
は、通電電流を大としなければならない。 It is also possible to consider a break type configuration in which the contact of the reed switch 3 closes when there is airflow without providing a gap G, and opens when there is no airflow, but in this case, the length of the temperature-sensitive material can be shortened. Due to the relationship between the resistivity of the temperature-sensitive magnetic metal material and the volume of the winding, a large current must be applied in order to generate heat similar to that of the make type described above.
第１図は従来の構成図であり、第２図は本考案
による第１の実施例の断面図、第３図は第２の実
施例の半断面図、第４図は第３の実施例の断面図
である。
図中、１は感温磁性体、２は永久磁石、３はリ
ードスイツチ、４は発熱体、１１，１１′は感温
磁性金属製コイル状筒状体、１２，１２′は環状
永久磁石。
Fig. 1 is a conventional configuration diagram, Fig. 2 is a sectional view of the first embodiment according to the present invention, Fig. 3 is a half sectional view of the second embodiment, and Fig. 4 is a third embodiment. FIG. In the figure, 1 is a temperature-sensitive magnetic body, 2 is a permanent magnet, 3 is a reed switch, 4 is a heating element, 11 and 11' are coiled tubular bodies made of temperature-sensitive magnetic metal, and 12 and 12' are annular permanent magnets.
Claims (1)
りなりかつ絶縁被膜を施した線材をコイル状に密
着巻きして中央に間隙を有する筒状体に成形する
と共に無誘導体となるよう構成し、該筒状体には
前記間隙に接点部を対向させてリードスイツチを
挿着し、更に前記筒状体の両端にはそれぞれ、軸
方向に磁化されかつ前記キユリー点より十分に高
いキユリー点を有する環状永久磁石を磁化方向を
揃えて装着して成り、前記線材に通電発熱せしめ
るようにしたことを特徴とする送風検知装置。 A wire made of a temperature-sensitive magnetic metal material having a required Kyrie point and coated with an insulating film is tightly wound into a coil shape to form a cylindrical body with a gap in the center, and is configured to be non-inductor. A reed switch is inserted into the cylindrical body with its contact portion facing the gap, and annular permanent magnets are magnetized in the axial direction and have a Curie point sufficiently higher than the Curie point at both ends of the cylindrical body. 1. A blowing air detection device comprising magnets mounted with their magnetization directions aligned, and the wire being energized to generate heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1665481U JPS6239326Y2 (en) | 1981-02-10 | 1981-02-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1665481U JPS6239326Y2 (en) | 1981-02-10 | 1981-02-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57130272U JPS57130272U (en) | 1982-08-13 |
| JPS6239326Y2 true JPS6239326Y2 (en) | 1987-10-07 |
Family
ID=29814631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1665481U Expired JPS6239326Y2 (en) | 1981-02-10 | 1981-02-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6239326Y2 (en) |
-
1981
- 1981-02-10 JP JP1665481U patent/JPS6239326Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57130272U (en) | 1982-08-13 |
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