JP2733997B2 - Temperature safety valve device - Google Patents
Temperature safety valve deviceInfo
- Publication number
- JP2733997B2 JP2733997B2 JP63230438A JP23043888A JP2733997B2 JP 2733997 B2 JP2733997 B2 JP 2733997B2 JP 63230438 A JP63230438 A JP 63230438A JP 23043888 A JP23043888 A JP 23043888A JP 2733997 B2 JP2733997 B2 JP 2733997B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- temperature
- valve
- unit
- flow path
- 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 - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 39
- 230000005540 biological transmission Effects 0.000 claims description 18
- 238000002834 transmittance Methods 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 description 15
- 239000000463 material Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- 239000011162 core material Substances 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Landscapes
- Temperature-Responsive Valves (AREA)
- Safety Valves (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、光伝送体の温度による透過率の変化を用い
た水流路の温度安全弁装置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature safety valve device for a water flow path using a change in transmittance of an optical transmission body with temperature.
従来の技術 従来の温度安全弁装置のブロック図を第３図に示す。
（例えば実開昭61−18424号公報） 第３図において１は水供給配管、２は高温湯供給配
管、３は混合湯出口である。４は水側弁で、５は湯側弁
である。６はサーミスタで混合湯温を検出し、湯温信号
を制御装置７に通知する。８はコントローラーで制御装
置７に連結され、給湯湯温を設定するためのもので、設
定された温度は制御装置７にインプットされる。制御装
置７は、前記サーミスタ６で検知した混合湯温信号とコ
ントローラー８で設定した設定温度信号より、これらの
温度差に基づいて水側弁４と湯側弁５を操作し混合水の
温度を調節する。2. Description of the Related Art FIG. 3 shows a block diagram of a conventional temperature safety valve device.
In FIG. 3, 1 is a water supply pipe, 2 is a hot water supply pipe, and 3 is a mixed hot water outlet. 4 is a water side valve and 5 is a hot water side valve. Reference numeral 6 denotes a thermistor that detects the temperature of the mixed hot water and notifies the control device 7 of a hot water temperature signal. Reference numeral 8 denotes a controller which is connected to the control device 7 for setting the temperature of hot water, and the set temperature is input to the control device 7. The controller 7 operates the water-side valve 4 and the hot-water-side valve 5 based on the temperature difference between the mixed water temperature signal detected by the thermistor 6 and the set temperature signal set by the controller 8 to control the temperature of the mixed water. Adjust.
さらに、高温湯が混合湯出口３から吐出しサーミスタ
６でこれを検知した場合、制御装置７は水側弁４と湯側
弁５を操作し混合水の出湯を停止する。Further, when high-temperature hot water is discharged from the mixed hot water outlet 3 and detected by the thermistor 6, the control device 7 operates the water side valve 4 and the hot water side valve 5 to stop the tapping of the mixed water.
ここでサーミスタ６は電気抵抗の変化を利用した感温
素子であり、制御装置７とは電線を用いて接続されてい
る。Here, the thermistor 6 is a temperature-sensitive element utilizing a change in electric resistance, and is connected to the control device 7 using an electric wire.
発明が解決しようとする課題 上記のような構成では水流路の近くまで電気回路が存
在することにより、電気回路に雑音が生じる等の課題が
生じた。また水流路が導電性の場合、異常時に漏電の危
険性がある。Problems to be Solved by the Invention In the above-described configuration, since the electric circuit exists near the water flow path, there are problems such as generation of noise in the electric circuit. If the water flow path is conductive, there is a risk of electric leakage at the time of abnormality.
課題を解決するための手段 上記課題を解決するために本発明の温度安全弁装置
は、水流路を開閉する弁と、前記弁を駆動する駆動部
と、光を発光する発光部と、前記発光部の光を伝送する
とともにその一部または全部を水流路内に臨ませるか、
あるいは接触させて設けた温度によってそれ自体の透過
率の変化する光伝送体と、前記光伝送体内の伝送光を受
光する受光部と、前記受光部の出力があらかじめ定めた
範囲外になると前記駆動部に前記弁を閉止する制御信号
を出力する制御部とでなる。Means for Solving the Problems In order to solve the above problems, a temperature safety valve device of the present invention includes a valve for opening and closing a water flow path, a driving unit for driving the valve, a light emitting unit for emitting light, and the light emitting unit. Or transmit some or all of the light into the water channel,
Alternatively, an optical transmission body whose transmittance changes according to the temperature provided in contact with the light transmission unit, a light receiving unit for receiving the transmission light in the optical transmission unit, and the driving when the output of the light receiving unit is out of a predetermined range. And a control unit that outputs a control signal for closing the valve to the unit.
作用 本発明は上記の構成により、発光部の光を水流路の温
度により、その温度に接した部位の光の伝送量が変化す
る光伝送体に通して受光部でその光量を検出している。
受光部の光量が減少することにより水流路内の温度が上
昇したことを検知し、制御部の信号により駆動部を動作
し弁を閉止する。According to the above configuration, the light of the light emitting section is detected by the light receiving section by passing the light of the light emitting section through the optical transmission body in which the light transmission amount of the portion in contact with the temperature changes according to the temperature of the water flow path. .
It detects that the temperature in the water flow path has risen due to the decrease in the amount of light in the light receiving unit, and operates the drive unit based on a signal from the control unit to close the valve.
実施例 以下、本発明の一実施例を図面を用いて説明する。第
１図は本発明の温度安全弁装置のブロック図である。Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of the temperature safety valve device of the present invention.
９は水流路を開閉する弁、10は前記弁１を駆動する駆
動部である。11は光を発光する発光部である。12は前記
発光部３の光を伝送するとともに、その一部あるいは全
部を水流路内に臨ませるか、あるいは接触させて設けた
温度によってそれ自体の透過率の変化する光伝送体であ
る。13は前記光伝送体12内の伝送光を受光する受光部で
ある。14は前記受光部13の出力を基に前記駆動部10に制
御信号を出力する制御部である。15は水流路を切換える
切換弁である。16は前記切換弁15を切換える切換えスイ
ッチである。17はシャワー水路、18はカラン水路であ
る。9 is a valve for opening and closing the water flow path, and 10 is a drive unit for driving the valve 1. Reference numeral 11 denotes a light emitting unit that emits light. Reference numeral 12 denotes an optical transmitter which transmits the light of the light emitting section 3 and partially or wholly faces the water flow path or whose transmittance changes depending on the temperature provided in contact with the water flow path. Reference numeral 13 denotes a light receiving unit that receives the transmission light in the optical transmission body 12. A control unit 14 outputs a control signal to the drive unit 10 based on the output of the light receiving unit 13. Reference numeral 15 denotes a switching valve for switching the water flow path. Reference numeral 16 denotes a changeover switch for changing over the changeover valve 15. 17 is a shower channel and 18 is a Kallang channel.
次に本発明の構成の動作を説明する。 Next, the operation of the configuration of the present invention will be described.
温度によってそれ自体の透過率の変化する光伝送体と
してはコアとクラッドからなるものを用いている。As the optical transmission body whose transmittance changes depending on the temperature, an optical transmission body composed of a core and a clad is used.
コア材とクラッド材に種々のプラスチック材料を用
い、その混合比率や重合比率を変化することによりガラ
ス転移温度（以下Tgと略す）を変化することが可能であ
る。プラスチック材料がTg以上になると光の散乱損失が
増加し、光伝送量が低下する。さらに高温になると収縮
が起こり光伝送路自体が断線し、全く光を通さなくなっ
てしまう。It is possible to change the glass transition temperature (hereinafter abbreviated as Tg) by using various plastic materials for the core material and the clad material and changing the mixing ratio and the polymerization ratio. When the plastic material exceeds Tg, the scattering loss of light increases, and the light transmission amount decreases. If the temperature further rises, shrinkage occurs, and the optical transmission line itself is broken, and light cannot pass at all.
一例としてプラスチック材料としてのポリメタルメタ
クリレート（以下、PMMAと略す）の温度特性を第２図に
示す。（特開昭61−123803号公報第２図） このPMMAのTgは約100℃であり、第２図では90℃から
水透過率が低下し始め、100℃以上では光透過率が小さ
すぎ測定が不能となっている。As an example, FIG. 2 shows the temperature characteristics of polymetal methacrylate (hereinafter abbreviated as PMMA) as a plastic material. (FIG. 2 of JP-A-61-123803) The Tg of this PMMA is about 100 ° C. In FIG. 2, the water transmittance starts to decrease from 90 ° C., and the light transmittance is too small above 100 ° C. Is disabled.
この性質を利用し、検出したい温度近傍にTgのあるプ
ラスチック材料を温度によってそれ自体の透過率の変化
する光伝送体12として用いる。そうすると、水流路内の
水温がTg以上になるとそのTg以上の温度に接した部分の
光伝送体12の光透過率が低下するため発光部11からの光
を受光している受光部13の光強度が低下する。Utilizing this property, a plastic material having Tg near the temperature to be detected is used as the optical transmitter 12 whose transmittance changes depending on the temperature. Then, when the temperature of the water in the water flow path becomes equal to or higher than Tg, the light transmittance of the optical transmission body 12 in a portion in contact with the temperature equal to or higher than Tg decreases, so that the light of the light receiving unit 13 receiving the light from the light emitting unit 11 Strength decreases.
その時、受光部13の出力を基に制御部14は水流路内の
水温がTg以上になったと判断し、駆動部10を駆動して弁
９を閉止する。したがって高温水がシャワーおよびカラ
ンから出水しないようになる。At that time, based on the output of the light receiving unit 13, the control unit 14 determines that the water temperature in the water flow path has become equal to or higher than Tg, and drives the drive unit 10 to close the valve 9. Therefore, high-temperature water does not flow out of the shower and the curran.
発明の効果 以上のように本発明の温度安全弁装置によれば、温度
検出部に温度によってそれ自体の透過率の変化する光伝
送体を用いているため電気回路が直接水流路に接触する
ことはない。そのため以下の効果がある。Effect of the Invention As described above, according to the temperature safety valve device of the present invention, since the temperature detector uses an optical transmission body whose transmittance changes depending on the temperature, the electric circuit does not directly contact the water flow path. Absent. Therefore, the following effects are obtained.
（１） 電気回路への雑音による制御部の誤動作が無く
なるため、確実に弁を駆動できる。(1) Since the malfunction of the control unit due to noise in the electric circuit is eliminated, the valve can be driven reliably.
したがって、シャワーもしくはカランを用いて出湯し
ていた場合、何らかの影響により水流路内に高温湯が流
入した場合、弁を確立に閉止することができる。Therefore, when hot water flows into the water flow path due to some influence when the hot water is discharged using a shower or a curran, the valve can be closed to establish.
（２） 漏電の危険性が無くなり、安全性が向上する。(2) The danger of electric leakage is eliminated, and safety is improved.
このため、人体を危険に陥れることなく安全性が向上
した効果を得ている。For this reason, the effect that the safety was improved without putting the human body in danger was obtained.
（３）光伝送体全体が温度検知機能を有しているため、
この光伝送体が臨んでいる部分の一部の水流路でも高温
になれば、その温度を確実に検知することができる。し
たがって、水流路の不特定な一部が高温にさらされるよ
うな機器に利用しても確実に高温部を検知し、弁を閉止
することができる。(3) Since the entire optical transmitter has a temperature detection function,
If the temperature of a part of the water flow path facing the optical transmission body also becomes high, the temperature can be reliably detected. Therefore, even when used in equipment in which an unspecified part of the water flow path is exposed to a high temperature, the high-temperature portion can be reliably detected and the valve can be closed.
（４）高温になると光伝送体そのものが収縮し最終的に
は断線するため光を透過することができなくなり、高温
での誤動作が無くなる。(4) When the temperature becomes high, the optical transmission body itself contracts and eventually breaks, so that light cannot be transmitted, and malfunction at high temperature is eliminated.
（５）発光手段の故障や受光手段の故障で光が無い場合
は、高温と判断し弁を閉止するため系の部品故障によっ
ても安全側に動作するため信頼性が向上する。(5) When there is no light due to the failure of the light emitting means or the failure of the light receiving means, it is determined that the temperature is high, and the valve is closed.
第１図は本発明の一実施例の温度安全弁装置のブロック
図、第２図はプラスチック材料の一例としてのPMMAの温
度特性図、第３図は従来の温度安全弁装置のブロック図
である。 ９……弁、10……駆動部、11……発光部、12……光伝送
体、13……受光部、14……制御部。FIG. 1 is a block diagram of a temperature safety valve device according to one embodiment of the present invention, FIG. 2 is a temperature characteristic diagram of PMMA as an example of a plastic material, and FIG. 3 is a block diagram of a conventional temperature safety valve device. 9 ... valve, 10 ... driving unit, 11 ... light emitting unit, 12 ... light transmitting body, 13 ... light receiving unit, 14 ... control unit.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭62−261829（ＪＰ，Ａ) 特開 昭57−3020（ＪＰ，Ａ) 特開 昭63−82327（ＪＰ，Ａ) 実開 昭61−18424（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-261829 (JP, A) JP-A-57-3020 (JP, A) JP-A-63-82327 (JP, A) 18424 (JP, U)
Claims (1)
駆動部と、光を発光する発光部と、前記発光部の光を伝
送するとともに、その少なくとも一部を水流路内に配設
するか、あるいは接触させて設けた温度によってそれ自
体の透過率の変化する光伝送体と、前記光伝送体内の伝
送光を受光する受光部と、前記受光部の出力があらかじ
め定めた範囲外になると前記駆動部に前記弁を閉止する
制御信号を出力する制御部とを備えた温度安全弁装置。1. A valve for opening and closing a water flow path, a driving section for driving the valve, a light emitting section for emitting light, and transmitting light from the light emitting section, and at least a part of the light transmitting section being disposed in the water flow path. Or a light transmitting body whose transmittance changes according to the temperature provided in contact with the light transmitting unit, a light receiving unit for receiving transmission light in the light transmitting unit, and an output of the light receiving unit out of a predetermined range. And a control unit for outputting a control signal for closing the valve to the drive unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63230438A JP2733997B2 (en) | 1988-09-14 | 1988-09-14 | Temperature safety valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63230438A JP2733997B2 (en) | 1988-09-14 | 1988-09-14 | Temperature safety valve device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0280877A JPH0280877A (en) | 1990-03-20 |
| JP2733997B2 true JP2733997B2 (en) | 1998-03-30 |
Family
ID=16907905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63230438A Expired - Fee Related JP2733997B2 (en) | 1988-09-14 | 1988-09-14 | Temperature safety valve device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2733997B2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS573020A (en) * | 1980-06-09 | 1982-01-08 | Nippon Telegr & Teleph Corp <Ntt> | Temperature measuring method |
| JPS6118424U (en) * | 1984-07-10 | 1986-02-03 | 東陶機器株式会社 | Fixed temperature, water heater |
| JPS62261829A (en) * | 1986-05-06 | 1987-11-14 | Matsushita Electric Ind Co Ltd | Shower device |
| JPS6382327A (en) * | 1986-09-27 | 1988-04-13 | Mitsubishi Electric Corp | Transmission type optical sensor |
-
1988
- 1988-09-14 JP JP63230438A patent/JP2733997B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0280877A (en) | 1990-03-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |