JPH04300482A - Steam control device in steam drying furnace - Google Patents
Steam control device in steam drying furnaceInfo
- Publication number
- JPH04300482A JPH04300482A JP8999091A JP8999091A JPH04300482A JP H04300482 A JPH04300482 A JP H04300482A JP 8999091 A JP8999091 A JP 8999091A JP 8999091 A JP8999091 A JP 8999091A JP H04300482 A JPH04300482 A JP H04300482A
- Authority
- JP
- Japan
- Prior art keywords
- steam
- temperature
- valve
- shape memory
- memory alloy
- 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
- 238000001035 drying Methods 0.000 title claims abstract description 23
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000002528 anti-freeze Effects 0.000 claims description 12
- 230000007423 decrease Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000000630 rising effect Effects 0.000 abstract 1
- 230000001131 transforming effect Effects 0.000 abstract 1
- 208000028659 discharge Diseases 0.000 description 24
- 108010053481 Antifreeze Proteins Proteins 0.000 description 4
- 238000007710 freezing Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Temperature-Responsive Valves (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、食品工業の分野などで
使用する蒸気乾燥炉における蒸気コントロ−ル装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steam control device for a steam drying oven used in the food industry.
【０００２】0002
【従来技術】本願発明者らは、食品工業における蒸気バ
ルブについて先に実用新案登録出願（実願昭６１−１５
５１１０）をしているが、その目的は、それまでの蒸気
乾燥炉において、温度降下した蒸気と凝結水の排出処理
が、蒸気トラップの排出能力不足から不充分であり、そ
のため炉内昇温が遅く効率が悪いこと、その解決策とし
て蒸気トラップと並列に設けた排出バルブを開けて常に
蒸気を排出しつづけているが、そのためのバルブ調整に
手間がかかること、開け放しによるエネルギ−損失を無
視できないことに鑑み、炉内配管中の蒸気が所定温度を
下回ると開き、上回ると閉じる形状記憶合金ばねを作動
源とする蒸気コントロ−ルバルブ（以下「先願バルブ」
という）を提供するにあった。しかしながらこの先願バ
ルブを配管中に組み込んだ手段においても、なお次のよ
うな難点を克服できない。即ち、第一に、乾燥炉の出口
側配管内温度は、数分で１３０゜Ｃになり、先願バルブ
の作動源である形状記憶合金ばねがバイアスばねに抗し
て伸長するためバルブ閉となってしまい、その後は蒸気
トラップによる排出に頼ることとなる。そして前記のよ
うに蒸気トラップのみでは排出不充分であるから、立ち
上がり時の温度降下した蒸気と凝結水の排出処理がうま
く行かず、乾燥炉の昇温が遅れる。そしてこれを防ぐた
めには蒸気トラップを半開状態におかざるを得ないから
、結局省エネルギ−効果は得られない。なお弁調整の手
間も厄介である。第二に先願バルブはその構造上、乾燥
炉の外の蒸気配管に組み込まれるものであるから、炉内
温度がそのまま伝わるものではなく、また配管の長さも
まちまちで炉外環境温度の影響も受けるから、所謂温度
むらがあり、安定したバルブ開閉動作が得られない。[Prior Art] The inventors of the present application previously applied for a utility model registration for a steam valve in the food industry (Utility Model Application No.
5110), but the purpose of this was that in previous steam drying furnaces, the discharge treatment of temperature-dropped steam and condensed water was insufficient due to the lack of discharge capacity of the steam trap, and as a result, the temperature inside the furnace did not rise. As a solution to this slow and inefficient process, a discharge valve installed in parallel with the steam trap is opened to constantly discharge steam, but adjusting the valve is time-consuming and the energy loss caused by leaving it open cannot be ignored. In view of this, we developed a steam control valve (hereinafter referred to as the "first application valve") whose operation source is a shape memory alloy spring that opens when the steam in the furnace piping falls below a predetermined temperature and closes when it rises above a certain temperature.
). However, even with the means of incorporating the valve of this prior application into piping, the following difficulties cannot be overcome. First, the temperature inside the piping on the outlet side of the drying oven reaches 130°C in a few minutes, and the shape memory alloy spring, which is the operating source of the valve of the prior application, expands against the bias spring, causing the valve to close. After that, you will have to rely on steam trap exhaust. As mentioned above, since the steam trap alone is not sufficient to discharge the steam and condensed water, the temperature of the steam and condensed water at the time of start-up cannot be properly discharged, and the temperature rise of the drying oven is delayed. In order to prevent this, the steam trap has to be kept in a half-open state, so that no energy-saving effect can be obtained. In addition, the time and effort required to adjust the valve is also troublesome. Second, due to its structure, the valve of the first application is built into the steam piping outside the drying furnace, so the temperature inside the furnace cannot be directly transmitted, and the length of the piping varies, so it is not affected by the environmental temperature outside the furnace. As a result, there is so-called temperature unevenness, and stable valve opening and closing operations cannot be obtained.
【０００３】0003
【発明が解決しようとする課題】本発明は、上記に鑑み
、蒸気乾燥炉内部に、所定温度で変態反応する形状記憶
合金ばねを作動源とする二方切換え弁を設置して、温度
降下蒸気、凝結水の排出調整を自動的且つ効率的に行な
い、炉内昇温を促して省エネルギ−効果をもたらす蒸気
コントロ−ル装置と、その装置に組み込んで使用する具
体的な二方切換え弁および凍結防止弁の構造を提供する
ものである。Problems to be Solved by the Invention In view of the above, the present invention provides a two-way switching valve whose operation source is a shape memory alloy spring that undergoes a transformation reaction at a predetermined temperature, installed inside a steam drying furnace, to reduce the temperature of steam. , a steam control device that automatically and efficiently adjusts the discharge of condensed water, promotes temperature rise in the furnace, and saves energy; a specific two-way switching valve that is incorporated into the device; and This provides a structure for an antifreeze valve.
【０００４】0004
【課題を解決するための手段】上記課題を解決するため
、本発明は、蒸気乾燥炉において蒸気配管を温度降下蒸
気、凝結水の排出回路Ａと蒸気トラップ回路Ｂに分岐す
る。そして蒸気乾燥炉本体１内部に、所定温度を下回る
と前記温度降下蒸気、凝結水の排出回路Ａ側に通ずる弁
座口を開き、上回ると前記排出回路Ａ側の弁座口を閉じ
ると同時に前記蒸気トラップ回路Ｂ側の弁座口を開く形
状記憶合金ばねを作動源とする二方切換え弁３を備えて
、蒸気乾燥炉における蒸気コントロ−ル装置を構成する
。[Means for Solving the Problems] In order to solve the above problems, the present invention branches the steam piping in a steam drying furnace into a temperature-reduced steam and condensed water discharge circuit A and a steam trap circuit B. Then, inside the steam drying oven main body 1, when the temperature drops below a predetermined temperature, a valve seat opening leading to the discharge circuit A side of the temperature-reduced steam and condensed water is opened, and when the temperature exceeds a predetermined temperature, the valve seat opening on the discharge circuit A side is closed. A steam control device in a steam drying furnace is provided with a two-way switching valve 3 whose operation source is a shape memory alloy spring that opens the valve seat port on the steam trap circuit B side.
【０００５】そして第二の態樣として、上記構成に加え
、最終ドレン排出回路Ｃに、所定温度を下回ると開き、
上回ると閉じる形状記憶合金ばねを作動源とする凍結防
止弁１５を組込んで、同じく蒸気乾燥炉における蒸気コ
ントロ−ル装置を構成する。[0005] As a second aspect, in addition to the above configuration, the final drain discharge circuit C has a structure that opens when the temperature drops below a predetermined temperature.
An anti-freeze valve 15 whose operation source is a shape memory alloy spring that closes when the temperature exceeds the temperature is incorporated to constitute a steam control device in the same steam drying furnace.
【０００６】また、上記装置中の二方切換え弁３として
、一側に蒸気入口５、他側に排出回路Ａに通ずる第一出
口６及び蒸気トラップ回路Ｂに通ずる第二出口７を有す
るハウジング４内に、前記蒸気入口５と連通する第一出
口６と第二出口７の各弁座口６ａ，７ａを交互に開く弁
部材８を固着した弁軸９を軸受１０を介して軸装し、前
記第一出口６側のハウジング４外に臨む弁軸外端に固定
したバネシ−ト部材１１と前記ハウジング４外端面との
間にバイアスばね１２を介在させるとともに前記第二出
口７側のハウジング４外に臨む弁軸外端に固定したバネ
シ−ト部材１３と前記ハウジング４外端面との間に所定
温度を下回ると縮少反応する形状記憶合金ばね１４を介
在させて成る、形状記憶合金ばねを作動源とする二方切
換え弁を併せて特許請求するものである。The two-way switching valve 3 in the above device also includes a housing 4 having a steam inlet 5 on one side, a first outlet 6 communicating with the exhaust circuit A and a second outlet 7 communicating with the steam trap circuit B on the other side. A valve shaft 9 having a valve member 8 fixed thereon which alternately opens the valve seat ports 6a, 7a of the first outlet 6 and second outlet 7 communicating with the steam inlet 5 is mounted via a bearing 10, A bias spring 12 is interposed between the spring sheet member 11 fixed to the outer end of the valve shaft facing outside of the housing 4 on the first outlet 6 side and the outer end surface of the housing 4, and the housing 4 on the second outlet 7 side A shape memory alloy spring 14 is interposed between a spring sheet member 13 fixed to the outer end of the valve shaft facing outside and the outer end surface of the housing 4, and the shape memory alloy spring 14 reacts by shrinking when the temperature drops below a predetermined temperature. A two-way switching valve as an operating source is also claimed.
【０００７】さらに、上記装置中の凍結防止弁１５とし
て、一側に蒸気入口１７、他側に排出口１８を有するハ
ウジング１６内に、先端に弁部材２０を固着した弁軸１
９を中間軸受２１を介して軸装し、その弁部材２０と前
記中間軸受２１との間に所定温度を下回ると縮少反応す
る形状記憶合金ばね２２を介在させるとともに前記中間
軸受２１と前記弁軸１９尾部に固定したバネシ−ト部材
２３との間にバイアスばね２４を介在させて成る、形状
記憶合金ばねを作動源とする凍結防止弁を併せて特許請
求するものである。Furthermore, as the antifreeze valve 15 in the above-mentioned device, a valve shaft 1 having a valve member 20 fixed to the tip thereof is housed in a housing 16 having a steam inlet 17 on one side and an outlet 18 on the other side.
9 is mounted via an intermediate bearing 21, and a shape memory alloy spring 22 is interposed between the valve member 20 and the intermediate bearing 21, which causes a contraction reaction when the temperature drops below a predetermined temperature, and the intermediate bearing 21 and the valve The present invention also claims an anti-freeze valve whose operation source is a shape memory alloy spring, which has a bias spring 24 interposed between a spring sheet member 23 fixed to the tail portion of the shaft 19.
【０００８】[0008]
【実施例】以下図面の実施例によって説明すると、図１
、図２において、１が蒸気乾燥炉本体で、その蒸気配管
を温度降下蒸気、凝結水の排出回路Ａと蒸気トラップ回
路Ｂに分岐する。そして炉本体１の内部出口付近に、炉
内温度が８０゜Ｃを下回り７０゜Ｃ〜６０゜Ｃになった
時、前記温度降下蒸気、凝結水の排出回路Ａ側に通ずる
弁座口を開き、逆に８０゜Ｃを上回ると前記排出回路Ａ
側の弁座口を閉じると同時に前記蒸気トラップ回路Ｂ側
の弁座口を開く形状記憶合金ばねを作動源とする二方切
換え弁３を備える。そしてさらに、上記構成に加え、最
終ドレン排出回路Ｃに、１０゜Ｃを下回ると開き、逆に
上回ると閉じる形状記憶合金ばねを作動源とする凍結防
止弁１５を組込んで、蒸気乾燥炉における蒸気コントロ
−ル装置を構成する。[Example] The following is an explanation based on an example shown in the drawings.
In FIG. 2, 1 is a steam drying furnace main body, and its steam piping is branched into a temperature-reduced steam and condensed water discharge circuit A and a steam trap circuit B. Then, near the internal outlet of the furnace body 1, when the temperature inside the furnace falls below 80°C and reaches 70°C to 60°C, a valve seat opening leading to the discharge circuit A side of the temperature-reduced steam and condensed water is opened. , conversely, when the temperature exceeds 80°C, the discharge circuit A
A two-way switching valve 3 is provided, whose operation source is a shape memory alloy spring that closes the valve seat port on the steam trap circuit B side and simultaneously opens the valve seat port on the steam trap circuit B side. Furthermore, in addition to the above configuration, an anti-freeze valve 15 whose operation source is a shape memory alloy spring that opens when the temperature drops below 10°C and closes when the temperature rises above 10°C is incorporated in the final drain discharge circuit C, so that the anti-freeze valve 15 is operated by a shape memory alloy spring. Constitutes a steam control device.
【０００９】上記装置中の形状記憶合金ばねを作動源と
する二方切換え弁３の態樣は種々考えられるが、その望
ましい態樣を図３に示す。即ち図３において、４が一側
に蒸気入口５、他側に排出回路Ａに通ずる第一出口６及
び蒸気トラップ回路Ｂに通ずる第二出口７を有するハウ
ジングで、そのハウジング４内に、前記蒸気入口５と連
通する第一出口６と第二出口７の各弁座口６ａ，７ａを
交互に開く弁部材８を固着した弁軸９を軸受１０を介し
て軸装してある。そして前記第一出口６側のハウジング
４外に臨む弁軸外端に固定したバネシ−ト部材１１と前
記ハウジング４外端面との間にバイアスばね１２を介在
させるとともに前記第二出口７側のハウジング４外に臨
む弁軸外端に固定したバネシ−ト部材１３と前記ハウジ
ング４外端面との間に所定温度を下回ると縮少反応する
形状記憶合金ばね１４を介在させて構成されるものであ
る。Various configurations of the two-way switching valve 3 using the shape memory alloy spring in the above device as an operating source are conceivable, but a desirable configuration is shown in FIG. That is, in FIG. 3, 4 is a housing having a steam inlet 5 on one side, a first outlet 6 leading to the exhaust circuit A and a second outlet 7 leading to the steam trap circuit B on the other side, in which the steam is stored. A valve shaft 9 is mounted via a bearing 10 to which a valve member 8 that alternately opens valve seat ports 6a, 7a of a first outlet 6 and a second outlet 7 communicating with the inlet 5 is fixed. A bias spring 12 is interposed between the spring sheet member 11 fixed to the outer end of the valve shaft facing outside of the housing 4 on the first outlet 6 side and the outer end surface of the housing 4, and the housing on the second outlet 7 side 4. A shape memory alloy spring 14 which reacts by shrinking when the temperature drops below a predetermined temperature is interposed between a spring sheet member 13 fixed to the outer end of the valve shaft facing the outside and the outer end surface of the housing 4. .
【００１０】また、上記装置中の凍結防止弁１５の望ま
しい態樣を図４に示す。即ち、１６が一側に蒸気入口１
７、他側に排出口１８を有するハウジングで、その内部
に、先端に弁部材２０を固着した弁軸１９を中間軸受２
１を介して軸装してある。そしてその弁部材２０と前記
中間軸受２１との間に所定温度を下回ると縮少反応する
形状記憶合金ばね２２を介在させるとともに前記中間軸
受２１と前記弁軸１９尾部に固定したバネシ−ト部材２
３との間にバイアスばね２４を介在させて構成されるも
のである。Further, a desirable configuration of the antifreeze valve 15 in the above device is shown in FIG. That is, 16 has steam inlet 1 on one side.
7. A housing having a discharge port 18 on the other side, inside which a valve shaft 19 with a valve member 20 fixed to its tip is inserted into an intermediate bearing 2.
The shaft is mounted via 1. A shape memory alloy spring 22 that shrinks when the temperature drops below a predetermined temperature is interposed between the valve member 20 and the intermediate bearing 21, and a spring sheet member 2 is fixed to the intermediate bearing 21 and the tail portion of the valve shaft 19.
3 with a bias spring 24 interposed between them.
【００１１】[0011]
【作用】さて始業に際しては、図１における蒸気発生装
置がまず稼働する。蒸気が一定温度になると約１時間前
に乾燥炉１内に蒸気が送り込まれる。そして立ち上がり
時（３〜４分）には炉内出口側の温度は一挙に１３０゜
Ｃぐらいになるが、その後蒸気は炉内において放熱され
、後凝結水となる。すると今度は漸次温度が低くなるか
ら、この温度降下した蒸気と凝結水は至急炉外に排出し
て、炉内を一定温度の保つ必要があり、もしそれができ
ないと炉内温度の上昇時間が大となり、一定温度になる
まで時間がかかる。そこで本発明は、同図に示すように
蒸気配管を温度降下蒸気、凝結水の排出回路Ａと蒸気ト
ラップ回路Ｂに分岐する。そして炉本体１内に、所定温
度を下回ると前記温度降下蒸気、凝結水の排出回路Ａを
開き、上回ると前記排出回路Ａを閉じると同時に前記蒸
気トラップ回路Ｂを開く形状記憶合金ばねを作動源とす
る二方切換え弁３を備えてあるから、その形状記憶合金
ばね１４が炉内温度を的確にとらえて、立ち上がり時に
おいては、所定温度を上回ると温度降下蒸気、凝結水の
排出回路Ａは閉じられて蒸気トラップ回路Ｂが開かれて
蒸気トラップを作動させ、その後所定温度を下回ると蒸
気トラップ回路Ｂが閉じられ、蒸気トラップは作用しな
いで温度降下蒸気、凝結水は前記排出回路Ａのみを通過
して最終ドレン排出回路Ｃへ押し出される。そしてこの
最終ドレン排出回路Ｃに、所定温度を下回ると開き、上
回ると閉じる形状記憶合金ばねを作動源とする凍結防止
弁１５を組込んだ態樣においては、寒冷期において自動
的にドレン抜き（弁の開閉動作）が行なわれ、凍結防止
の目的を果たす。[Operation] At the start of work, the steam generator shown in FIG. 1 is first put into operation. Approximately one hour before the steam reaches a certain temperature, it is fed into the drying oven 1. At the time of start-up (3 to 4 minutes), the temperature at the outlet side of the furnace suddenly reaches about 130°C, but after that, the steam is radiated as heat in the furnace and becomes post-condensed water. Then, the temperature gradually decreases, so the steam and condensed water whose temperature has dropped must be immediately discharged to the outside of the furnace to maintain a constant temperature inside the furnace. If this is not possible, it will take a long time for the temperature inside the furnace to rise. It becomes large and takes time to reach a constant temperature. Therefore, in the present invention, the steam piping is branched into a temperature-reduced steam and condensed water discharge circuit A and a steam trap circuit B, as shown in the figure. A shape memory alloy spring is installed in the furnace body 1 to open the discharge circuit A of the temperature-dropped steam and condensed water when the temperature falls below a predetermined temperature, and to close the discharge circuit A and simultaneously open the steam trap circuit B when the temperature exceeds a predetermined temperature. Since it is equipped with a two-way switching valve 3, its shape memory alloy spring 14 accurately captures the temperature inside the furnace, and at startup, when the temperature exceeds a predetermined temperature, the discharge circuit A of steam and condensed water is turned off. When the temperature is closed, the steam trap circuit B is opened and the steam trap is operated, and then when the temperature drops below a predetermined temperature, the steam trap circuit B is closed and the steam trap does not operate, and the temperature drops steam and condensed water are discharged only through the discharge circuit A. It passes through and is pushed out to the final drain discharge circuit C. When the final drain discharge circuit C is equipped with an antifreeze valve 15 operated by a shape memory alloy spring that opens when the temperature falls below a predetermined temperature and closes when the temperature rises above a predetermined temperature, the drain is automatically drained ( (opening and closing of valves) and serves the purpose of anti-freezing.
【００１２】0012
【発明の効果】本発明は以上のようで、まず蒸気乾燥炉
内部に、所定温度で変態反応する形状記憶合金ばねを作
動源とする切換え弁を設置し、炉内温度を的確に把握し
て、所定温度を下回ると前記温度降下蒸気、凝結水の排
出回路Ａを開き、上回ると前記排出回路Ａを閉じると同
時に前記蒸気トラップ回路Ｂを開くようにしたから、上
記作用のところで説明したように、立ち上り時の高温蒸
気、温度降下後の蒸気、凝結水の排出が、上記回路Ａ，
Ｂに自動的に切換え調整され、炉内昇温を適切に促すと
ともに、蒸気の不必要な放出を避けて、効率的なエネル
ギ−利用を達成する。各弁の手動操作の手間が不要とな
ったことによる省力効果は計り知れない。さらに凍結防
止弁を組み込んだ態樣おいて凍結防止が自動的に行なわ
れることについては前記したとおりである。[Effects of the Invention] The present invention is as described above. First, a switching valve whose operation source is a shape memory alloy spring that undergoes a transformation reaction at a predetermined temperature is installed inside the steam drying furnace, and the temperature inside the furnace is accurately grasped. When the temperature drops below a predetermined temperature, the discharge circuit A of the temperature-reduced steam and condensed water is opened, and when the temperature exceeds the temperature, the discharge circuit A is closed and at the same time the steam trap circuit B is opened, as explained in the above operation. , high-temperature steam at rise, steam after temperature drop, and condensed water are discharged from circuit A,
B is automatically switched and adjusted to appropriately promote temperature rise in the furnace, avoid unnecessary release of steam, and achieve efficient energy use. The labor-saving effect of not having to manually operate each valve is immeasurable. Furthermore, as described above, anti-freezing is automatically performed when an anti-freezing valve is incorporated.
【図１】本発明装置を組込んだ蒸気乾燥システムの全体
回路図[Figure 1] Overall circuit diagram of a steam drying system incorporating the device of the present invention
【図２】本発明装置を実施した蒸気乾燥炉の要部側面図
[Fig. 2] Side view of the main parts of a steam drying furnace in which the device of the present invention is implemented
【図３】本発明装置に使用する形状記憶合金ばねを作動
源とする二方切換え弁の縦断側面図。FIG. 3 is a longitudinal sectional side view of a two-way switching valve whose operating source is a shape memory alloy spring used in the device of the present invention.
【図４】本発明装置に使用する形状記憶合金ばねを作動
源とする凍結防止弁の縦断側面図。FIG. 4 is a longitudinal sectional side view of an antifreeze valve whose operating source is a shape memory alloy spring used in the device of the present invention.
１ 蒸気乾燥炉本体
Ａ 温度降下蒸気、凝結水の排出回路Ｂ
蒸気トラップ回路
Ｃ 最終ドレン排出回路
３ 形状記憶合金ばねを作動源とする二方切換え
弁４ ハウジング
５ 蒸気入口
６ 第一出口
６ａ 弁座
７ 第二出口
７ａ 弁座
８ 弁部材
９ 弁軸
１０ 軸受
１１ バネシ−ト部材
１２ バイアスばね
１３ バネシ−ト部材
１４ 形状記憶合金ばね
１５ 形状記憶合金ばねを作動源とする凍結
防止弁１６ ハウジング
１７ 蒸気入口
１８ 排出口
１９ 弁軸
２０ 弁部材
２１ 中間軸受
２２ 形状記憶合金ばね
２３ バネシ−ト部材
２４ バイアスばね1 Steam drying oven main body A Temperature drop steam and condensed water discharge circuit B
Steam trap circuit C Final drain discharge circuit 3 Two-way switching valve using a shape memory alloy spring as an operating source 4 Housing 5 Steam inlet 6 First outlet 6a Valve seat 7 Second outlet 7a Valve seat 8 Valve member 9 Valve shaft 10 Bearing 11 Spring seat member 12 Bias spring 13 Spring seat member 14 Shape memory alloy spring 15 Antifreeze valve 16 using shape memory alloy spring as an operating source Housing 17 Steam inlet 18 Discharge port 19 Valve shaft 20 Valve member 21 Intermediate bearing 22 Shape memory Alloy spring 23 Spring sheet member 24 Bias spring
Claims (4)
下蒸気、凝結水の排出回路Ａと蒸気トラップ回路Ｂに分
岐し、炉本体１内部に、所定温度を下回ると前記温度降
下蒸気、凝結水の排出回路Ａを開き、上回ると前記排出
回路Ａを閉じると同時に前記蒸気トラップ回路Ｂを開く
形状記憶合金ばねを作動源とする二方切換え弁３を備え
たことを特徴とする蒸気乾燥炉における蒸気コントロ−
ル装置。1. In a steam drying furnace, the steam piping is branched into a discharge circuit A for temperature-reduced steam and condensed water and a steam trap circuit B, and the temperature-reduced steam and condensed water are discharged into the inside of the furnace body 1 when the temperature drops below a predetermined temperature. Steam in a steam drying oven characterized in that it is equipped with a two-way switching valve 3 whose operating source is a shape memory alloy spring that opens a discharge circuit A and, when exceeded, closes the discharge circuit A and simultaneously opens the steam trap circuit B. control
device.
下回ると開き、上回ると閉じる形状記憶合金ばねを作動
源とする凍結防止弁１５を組込んだことを特徴とする請
求項１の蒸気乾燥炉における蒸気コントロ−ル装置。2. The steam drying device according to claim 1, wherein the final drain discharge circuit C incorporates an antifreeze valve 15 whose operating source is a shape memory alloy spring that opens when the temperature falls below a predetermined temperature and closes when the temperature rises above a predetermined temperature. Steam control device in a furnace.
に通ずる第一出口６及び蒸気トラップ回路Ｂに通ずる第
二出口７を有するハウジング４内に、前記蒸気入口５と
連通する第一出口６と第二出口７の各弁座口６ａ，７ａ
を交互に開く弁部材８を固着した弁軸９を軸受１０を介
して軸装し、前記第一出口６側のハウジング４外に臨む
弁軸外端に固定したバネシ−ト部材１１と前記ハウジン
グ４外端面との間にバイアスばね１２を介在させるとと
もに前記第二出口７側のハウジング４外に臨む弁軸外端
に固定したバネシ−ト部材１３と前記ハウジング４外端
面との間に所定温度を下回ると縮少反応する形状記憶合
金ばね１４を介在させて成る請求項１又は２の蒸気乾燥
炉における蒸気コントロ−ル装置に使用する形状記憶合
金ばねを作動源とする二方切換え弁。Claim 3: Steam inlet 5 on one side and exhaust circuit A on the other side.
In the housing 4 having a first outlet 6 communicating with the steam trap circuit B and a second outlet 7 communicating with the steam trap circuit B, respective valve seat ports 6a, 7a of the first outlet 6 and the second outlet 7 communicating with the steam inlet 5 are provided.
A valve shaft 9 to which a valve member 8 that opens alternately is fixed is mounted via a bearing 10, and a spring sheet member 11 fixed to the outer end of the valve shaft facing outside of the housing 4 on the first outlet 6 side and the housing. A bias spring 12 is interposed between the outer end surface of the housing 4 and a spring sheet member 13 fixed to the outer end of the valve shaft facing the outside of the housing 4 on the second outlet 7 side, and a predetermined temperature is maintained between the outer end surface of the housing 4 and the spring sheet member 13. 3. A two-way switching valve using a shape memory alloy spring as an operating source for use in a steam control device in a steam drying furnace as claimed in claim 1 or 2, wherein the shape memory alloy spring 14 is provided with a shape memory alloy spring 14 which reacts by shrinking when the temperature decreases below the specified temperature.
８を有するハウジング１６内部に、先端に弁部材２０を
固着した弁軸１９を中間軸受２１を介して軸装し、その
弁部材２０と前記中間軸受２１との間に所定温度を下回
ると縮少反応する形状記憶合金ばね２２を介在させると
ともに前記中間軸受２１と前記弁軸１９尾部に固定した
バネシ−ト部材２３との間にバイアスばね２４を介在さ
せて成る請求項２の蒸気乾燥炉における蒸気コントロ−
ル装置に使用する形状記憶合金ばねを作動源とする凍結
防止弁。Claim 4: Steam inlet 17 on one side and outlet 1 on the other side.
A valve shaft 19 having a valve member 20 fixed to the tip thereof is mounted inside the housing 16 having a diameter of 8, via an intermediate bearing 21, and the space between the valve member 20 and the intermediate bearing 21 shrinks when the temperature drops below a predetermined temperature. 3. The steam drying furnace according to claim 2, wherein a responsive shape memory alloy spring 22 is interposed, and a bias spring 24 is interposed between the intermediate bearing 21 and a spring sheet member 23 fixed to the tail portion of the valve shaft 19. control
An antifreeze valve whose operating source is a shape memory alloy spring used in equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8999091A JPH04300482A (en) | 1991-03-28 | 1991-03-28 | Steam control device in steam drying furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8999091A JPH04300482A (en) | 1991-03-28 | 1991-03-28 | Steam control device in steam drying furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04300482A true JPH04300482A (en) | 1992-10-23 |
Family
ID=13986074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8999091A Pending JPH04300482A (en) | 1991-03-28 | 1991-03-28 | Steam control device in steam drying furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04300482A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012002406A (en) * | 2010-06-15 | 2012-01-05 | Tlv Co Ltd | Steam heating device |
| CN106481966A (en) * | 2015-08-29 | 2017-03-08 | 乌鲁木齐金穗剑技术开发有限公司 | A kind of hydrophobic valve arrangement that can adjust discharge opeing temperature |
| CN111678047A (en) * | 2020-05-15 | 2020-09-18 | 宁波市北仑精诚设备安装有限公司 | Steam pipeline |
-
1991
- 1991-03-28 JP JP8999091A patent/JPH04300482A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012002406A (en) * | 2010-06-15 | 2012-01-05 | Tlv Co Ltd | Steam heating device |
| CN106481966A (en) * | 2015-08-29 | 2017-03-08 | 乌鲁木齐金穗剑技术开发有限公司 | A kind of hydrophobic valve arrangement that can adjust discharge opeing temperature |
| CN111678047A (en) * | 2020-05-15 | 2020-09-18 | 宁波市北仑精诚设备安装有限公司 | Steam pipeline |
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