JPH0241679B2 - - Google Patents
Info
- Publication number
- JPH0241679B2 JPH0241679B2 JP57071933A JP7193382A JPH0241679B2 JP H0241679 B2 JPH0241679 B2 JP H0241679B2 JP 57071933 A JP57071933 A JP 57071933A JP 7193382 A JP7193382 A JP 7193382A JP H0241679 B2 JPH0241679 B2 JP H0241679B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- temperature
- valve chamber
- chamber
- responsive element
- 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
- 239000012530 fluid Substances 0.000 claims description 25
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 18
- 238000005192 partition Methods 0.000 claims description 16
- 230000009466 transformation Effects 0.000 claims description 15
- 229910000734 martensite Inorganic materials 0.000 claims description 14
- 230000002441 reversible effect Effects 0.000 claims description 6
- 230000000717 retained effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000003679 aging effect Effects 0.000 description 2
- 230000003446 memory effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- -1 copper-zinc-aluminum Chemical compound 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Temperature-Responsive Valves (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は流体系から所定温度以下の流体を自動
的に排出する温度応動弁に関する。暖房用ラジエ
ータから復水を排出したり、油輸送管等を蒸気や
温水で保温するトレース管から低温水を排出した
り、蒸気や温水を用いる装置等が凍結しない用に
所定温度以下の水を排出する場合等に用いる。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a temperature-responsive valve that automatically discharges fluid below a predetermined temperature from a fluid system. Discharge condensate from heating radiators, discharge low-temperature water from trace pipes that keep oil transport pipes warm with steam or hot water, or supply water below a specified temperature to prevent equipment that uses steam or hot water from freezing. Used when discharging.
（従来の技術）
特願昭55―54644号で温度応動素子を形状記憶
合金で作つた温度応動弁を提案した。この弁の構
造の概要は次の通りである。弁ケーシングで入口
と、入口の流体が流入する弁室と、弁室の流体が
弁口を通して流出する出口とを形成する。弁口の
開口部分に弁座を形成する。弁座に着座して弁口
を塞ぎ弁座から離れて弁口を開く様に弁体を配置
する。所定温度以下に冷却されると母相からマル
テンサイト相に熱弾性型マルテンサイト変態をし
所定温度以上に加熱されるとその逆変態をする形
状記憶合金で作つた温度応動素子を弁室内に配置
し、温度応動素子が弁室内の流体の温度に応じて
変態し弁体を駆動して所定温度以上になると弁体
を弁座に着座させて弁口を塞ぐ様にする。(Prior art) In Japanese Patent Application No. 54,644/1984, we proposed a temperature-responsive valve in which the temperature-responsive element was made of a shape memory alloy. The outline of the structure of this valve is as follows. The valve casing defines an inlet, a valve chamber into which the inlet fluid enters, and an outlet through which the valve chamber fluid exits through the valve port. A valve seat is formed at the opening of the valve port. The valve body is arranged so as to sit on the valve seat, close the valve port, and move away from the valve seat to open the valve port. A temperature-responsive element made of a shape memory alloy that undergoes a thermoelastic martensitic transformation from the parent phase to a martensitic phase when cooled below a predetermined temperature and reversely transforms when heated above a predetermined temperature is placed in the valve chamber. However, the temperature-responsive element transforms in response to the temperature of the fluid in the valve chamber and drives the valve body, so that when the temperature exceeds a predetermined temperature, the valve body is seated on the valve seat and closes the valve port.
（本発明が解決しようとする課題）
この温度応動弁では温度応動素子が弁口に対し
て入口側に配置されているので、高温の流体系に
取付けた場合、形状記憶合金が最高使用温度以上
に加熱されることがある。現在実用できるチタン
―ニツケル、銅―亜鉛―アルミニウム合金等の最
高使用可能温度はほぼ120度Ｃである。従つて、
形状記憶合金が析出現象あるいは時効効果を起こ
して性能が劣悪になる欠点があつた。(Problems to be Solved by the Invention) In this temperature-responsive valve, the temperature-responsive element is placed on the inlet side of the valve port, so when installed in a high-temperature fluid system, the shape memory alloy may exceed the maximum operating temperature. It may be heated to The maximum usable temperature of currently available titanium-nickel and copper-zinc-aluminum alloys is approximately 120 degrees Celsius. Therefore,
Shape memory alloys had the disadvantage of causing precipitation phenomena or aging effects, resulting in poor performance.
そこで、形状記憶合金で作つた温度応動素子を
弁口に対して出口側に配置すれば、温度応動素子
は弁口を塞ぐ設定温度以上に加熱されることがな
いので、性能が劣悪にならない。 Therefore, if a temperature-responsive element made of a shape memory alloy is placed on the outlet side with respect to the valve opening, the temperature-responsive element will not be heated above the set temperature that blocks the valve opening, so performance will not deteriorate.
しかしながら、この場合、形状記憶合金の相変
態サイクルが外気の温度の影響で短くなる欠点が
ある。 However, in this case, there is a drawback that the phase transformation cycle of the shape memory alloy becomes shorter due to the influence of the outside air temperature.
従つて、本発明の技術的課題は形状記憶合金で
作つた温度応動素子の相変態サイクルが外気の温
度の影響で短くなることを防止することである。 Therefore, the technical problem of the present invention is to prevent the phase transformation cycle of a temperature-responsive element made of a shape memory alloy from being shortened due to the influence of outside air temperature.
（課題を解決するための手段）
上記の技術的課題を解決するために講じた本発
明の技術的手段は次の通りである。弁ケーシング
で入口と、入口の流体が弁口を通して流入する弁
室と、弁室の流体が流出する出口とを形成する。
弁口の開口部分に弁座を形成する。弁座に着座し
て弁口を塞ぎ弁座から離れて弁口を開く様に弁体
を配置する。所定温度以下に冷却されると母相か
らマルテンサイト相に熱弾性型マルテンサイト変
態をし所定温度以上に加熱されるとその逆変態を
する形状記憶合金で作つた温度応動素子を弁室内
に配置し、温度応動素子が弁室内の流体の温度に
応じて変態し弁体を駆動して所定温度以上になる
と弁体を弁座に着座させて弁口を塞ぐ様にする。
弁室内に液体を溜めて温度応動素子が液体中に浸
かる様にする。(Means for Solving the Problems) The technical means of the present invention taken to solve the above technical problems are as follows. The valve casing defines an inlet, a valve chamber into which fluid from the inlet enters through the valve port, and an outlet from which fluid from the valve chamber exits.
A valve seat is formed at the opening of the valve port. The valve body is arranged so that it seats on the valve seat to close the valve port and leaves the valve seat to open the valve port. A temperature-responsive element made of a shape memory alloy that undergoes a thermoelastic martensitic transformation from the parent phase to a martensitic phase when cooled below a predetermined temperature and reversely transforms when heated above a predetermined temperature is placed in the valve chamber. However, the temperature-responsive element transforms in response to the temperature of the fluid in the valve chamber and drives the valve body, and when the temperature reaches a predetermined temperature or higher, the valve body is seated on the valve seat and closes the valve port.
A liquid is stored in the valve chamber so that the temperature-responsive element is immersed in the liquid.
液体を溜めてその液体中に温度応動素子を浸け
る手段として、弁室と出口との間に小さな孔を多
数あけた隔壁を設け、弁口が塞がれているときに
液体を弁室内に溜めておく様にすること、あるい
は、出口を弁室の上部に開口させ、弁室内に液体
を溜め、その液体溜りに温度応動素子が浸かる様
にすることが適用出来る。 As a means of storing liquid and immersing the temperature-responsive element in the liquid, a partition wall with many small holes is provided between the valve chamber and the outlet, and the liquid is stored in the valve chamber when the valve port is blocked. Alternatively, the outlet may be opened at the upper part of the valve chamber, a liquid may be stored in the valve chamber, and the temperature-responsive element may be immersed in the liquid pool.
（作用）
上記の技術的手段の作用は次の通りである。流
体系の流体は入口から弁口を通つて弁室に入り、
弁室内に配置した温度応動素子を加熱あるいは冷
却する。形状記憶合金は所定温度以下に冷却され
ると母相からマルテンサイト相に熱弾性型マルテ
ンサイト変態をし所定温度以上に加熱されるとそ
の逆変態をする。温度応動素子はこの変態を利用
して弁体を駆動し、所定温度以上になると弁体を
弁座に着座させて弁口を塞ぐ。それ以下の温度の
流体は弁口を通つて弁室に流入し出口から外部に
流出する。弁室内は出口を通して一般に大気に連
通したりして、入口よりもかなり低い圧力にあ
り、高温水は低圧域にて再蒸発して温度が飽和温
度まで下がる。従つて、弁室内の温度は温度応動
素子が弁口を塞ぐ設定温度以上にはならないの
で、形状記憶合金は性能が劣悪にならない。(Operation) The operation of the above technical means is as follows. Fluid in the fluid system enters the valve chamber from the inlet through the valve port;
A temperature responsive element placed inside the valve chamber is heated or cooled. When a shape memory alloy is cooled to a predetermined temperature or below, it undergoes a thermoelastic martensitic transformation from a parent phase to a martensitic phase, and when heated above a predetermined temperature, it undergoes the reverse transformation. The temperature-responsive element utilizes this transformation to drive the valve body, and when the temperature exceeds a predetermined temperature, the valve body seats on the valve seat and closes the valve port. Fluid at a temperature below this temperature flows into the valve chamber through the valve port and flows out through the outlet. The inside of the valve chamber generally communicates with the atmosphere through the outlet and is at a considerably lower pressure than the inlet, and the high-temperature water is re-evaporated in the low-pressure region and the temperature drops to the saturation temperature. Therefore, the temperature inside the valve chamber does not exceed the set temperature at which the temperature-responsive element closes the valve port, so the performance of the shape memory alloy does not deteriorate.
弁口が塞がれた閉弁時にも弁室内に液体が溜つ
ており、十分な熱量が確保されるので外気による
冷却がゆつくりと進む。低温の空気が弁室内に流
入することがない。従つて、温度応動素子の相変
態サイクルの短縮を防止できる。 Even when the valve is closed and the valve port is blocked, liquid remains in the valve chamber, ensuring a sufficient amount of heat, allowing the outside air to slowly cool the valve. Low temperature air does not flow into the valve chamber. Therefore, shortening of the phase transformation cycle of the temperature responsive element can be prevented.
（第１実施例）
第１図と、第２図に示す第１実施例を説明す
る。ニツプル形状の本体１で入口２と、入口の流
体が弁口１０を通して流入する弁室４と、弁室内
の流体が流出する出口３を形成する。弁口１０は
入口２と弁室４の間の隔壁に孔をあけて形成す
る。入口２には弁口１０を覆つてストレーナ６を
配置する。弁口１０の弁室側開口部分に弁座を形
成する。弁室４は内周壁を円筒形状に形成し、弁
体５を挿入する。弁体５の先端部１２は円錐形状
で弁座１１に着座して弁口１０を塞ぐことができ
る。中央部分は第２図に明らかなように、ほぼ三
角柱形状で、角の部分は弁室４の内周壁に摺接す
る。後端は小径の円柱形状でその回りにコイル状
の形状記憶合金で作つた温度応動素子７を配置す
る。素子７は一端が弁体５の中央と後端部分の間
の段部に当り、他端が隔壁８に当る。形状記憶合
金としては可逆形状記憶効果を有する銅−亜鉛−
アルミニウム合金を用いる。この素子７は所定温
度以下に冷却されると熱弾性型マルテンサイト変
態して短くなり、所定温度以上に加熱されると逆
変態して長くなる。形状記憶合金としてチタン−
ニツケル合金を用いてもよい。隔壁８には直径が
１ミリメートル程度の孔を多数あける。また、ス
ナツプ・リング９で本体１に取付ける。(First Example) A first example shown in FIG. 1 and FIG. 2 will be described. A nipple-shaped main body 1 forms an inlet 2, a valve chamber 4 into which fluid at the inlet flows in through a valve port 10, and an outlet 3 through which fluid in the valve chamber flows out. The valve port 10 is formed by drilling a hole in the partition wall between the inlet 2 and the valve chamber 4. A strainer 6 is arranged at the inlet 2 so as to cover the valve port 10. A valve seat is formed at the opening portion of the valve port 10 on the valve chamber side. The valve chamber 4 has an inner peripheral wall formed into a cylindrical shape, and a valve body 5 is inserted therein. The tip 12 of the valve body 5 has a conical shape and can be seated on the valve seat 11 to close the valve port 10. As is clear from FIG. 2, the central portion has a substantially triangular prism shape, and the corner portions come into sliding contact with the inner circumferential wall of the valve chamber 4. The rear end has a cylindrical shape with a small diameter, and a temperature-responsive element 7 made of a coiled shape memory alloy is arranged around it. One end of the element 7 is in contact with a step between the center and rear end portions of the valve body 5, and the other end is in contact with the partition wall 8. As a shape memory alloy, copper-zinc has a reversible shape memory effect.
Uses aluminum alloy. When this element 7 is cooled below a predetermined temperature, it undergoes thermoelastic martensitic transformation and becomes shorter, and when heated above a predetermined temperature, it undergoes reverse transformation and becomes longer. Titanium as a shape memory alloy
A nickel alloy may also be used. A large number of holes with a diameter of about 1 mm are made in the partition wall 8. Also, attach it to the main body 1 with a snap ring 9.
次の様に作動する。第１図に示す様に横向きに
取付けても、あるいは上・下向きに取付けてもよ
い。第１図は弁室４が低温であり、温度応動素子
７が短く、弁体５が弁座１１から離れて弁口１０
が開いている状態を示している。流体は入口２か
ら弁口１０を通つて弁室４に流入し、弁室４の内
周壁と弁体５の間の空き間から素子７の回りを流
れ、隔壁８の孔を通つて出口３から流出する。こ
の間に流体の温度が高くなり加熱されて所定温度
に達すると、素子７はマルテンサイト相から母相
に逆変態して長くなり、弁体５を駆動して弁座１
１に着座させ、弁口１０を塞ぐ。隔壁８にあけた
孔が小さいので弁室４の液体は表面張力の作用で
出口３側に流出しない。出口３側の空気等の気体
が弁室４に入らない。従つて、弁室４の液体の温
度はゆつくりと下がる。そして、所定温度まで下
がると素子７は母相からマルテンサイト相にマル
テンサイト変態して短くなる。弁体５は入口２側
の流体の圧力で押されて弁座１１から離れて、弁
口１０を開く。この様にして流体の温度に応じて
弁口を開閉して所定温度以下の流体を自動的に排
出する。 It operates as follows. It may be mounted horizontally as shown in FIG. 1, or may be mounted upwardly or downwardly. In FIG. 1, the valve chamber 4 is at a low temperature, the temperature-responsive element 7 is short, and the valve body 5 is separated from the valve seat 11 so that the valve opening 10
indicates that it is open. Fluid enters the valve chamber 4 from the inlet 2 through the valve port 10, flows around the element 7 through the gap between the inner circumferential wall of the valve chamber 4 and the valve body 5, and passes through the hole in the partition wall 8 to the outlet 3. flows out from. During this time, when the temperature of the fluid increases and reaches a predetermined temperature, the element 7 reversely transforms from the martensitic phase to the parent phase and becomes longer, driving the valve body 5 and moving the valve seat 1.
1 and close the valve port 10. Since the holes made in the partition wall 8 are small, the liquid in the valve chamber 4 does not flow out to the outlet 3 side due to surface tension. Gas such as air on the outlet 3 side does not enter the valve chamber 4. Therefore, the temperature of the liquid in the valve chamber 4 slowly decreases. Then, when the temperature drops to a predetermined temperature, the element 7 undergoes martensitic transformation from the parent phase to the martensitic phase and becomes shorter. The valve body 5 is pushed by the pressure of the fluid on the inlet 2 side, moves away from the valve seat 11, and opens the valve port 10. In this way, the valve opening is opened and closed according to the temperature of the fluid, and fluid below a predetermined temperature is automatically discharged.
本実施例では、可逆形状記憶効果を有する合金
を用いたので、温度応動素子は低温時に自から短
くなる。従つて、低圧流体でも弁体を押して弁口
を開けることができる。開弁用のバイアス・スプ
リングを必要としない。内部部品をニツプル形状
の本体内にコンパクトに配置したので、小形であ
る。材料が少ないから経済的につくれる。 In this example, since an alloy having a reversible shape memory effect is used, the temperature-responsive element automatically shortens at low temperatures. Therefore, even with low pressure fluid, the valve body can be pushed to open the valve port. Does not require a bias spring to open the valve. The internal parts are compactly arranged inside the nipple-shaped main body, so it is small. It can be made economically since it requires few materials.
（第２実施例）
第３図に示す第２実施例を説明する。デイスク
状本体２７の中央部分に弁口２８をあける。金属
製薄板を帽子状にした隔壁部材３０を本体２７の
片側に取付け、両部材の外周部分を気密的に溶接
する。隔壁部材３０の中央部分には直径が１ミリ
メートル程度の小さな孔を多数あける。隔壁部材
３０の中に球形弁体２９と形状記憶合金でスパイ
ラル状に作つた温度応動素子３１を配置する。素
子３１は一端が弁体２９に、他端が隔壁部材３０
に当る。また、第１実施例と同様に、所定温度以
上に加熱されれば伸び所定温度以下に冷却されれ
ば縮む。弁体２９は素子３１の伸縮で駆動されて
弁口２８を開閉する。上記ユニツトは入口２３側
配管２１と出口２４側配管２２のフランジの間に
ガスケツト３２，３３を挾んで取付けて使用す
る。番号２５，２６はボルト・ナツトを示す。(Second Example) A second example shown in FIG. 3 will be described. A valve port 28 is opened in the center portion of the disc-shaped main body 27. A partition member 30 made of a thin metal plate shaped like a hat is attached to one side of the main body 27, and the outer peripheral portions of both members are welded airtightly. A large number of small holes with a diameter of about 1 mm are made in the center of the partition member 30. A spherical valve body 29 and a temperature responsive element 31 made of a shape memory alloy in a spiral shape are arranged in the partition member 30. The element 31 has one end connected to the valve body 29 and the other end connected to the partition member 30.
corresponds to Further, as in the first embodiment, it expands when heated above a predetermined temperature and contracts when cooled below a predetermined temperature. The valve body 29 is driven by the expansion and contraction of the element 31 to open and close the valve port 28. The above unit is used by attaching gaskets 32 and 33 between the flanges of the piping 21 on the inlet 23 side and the piping 22 on the outlet 24 side. Numbers 25 and 26 indicate bolts and nuts.
この実施例の作動は第１実施例と同様であり、
容易に理解されるので省略する。球形弁体と温度
応動素子をデイスク状本体と帽子状隔壁部材の中
にコンパクトに配置したので極めて小形である。 The operation of this embodiment is similar to that of the first embodiment,
Since it is easily understood, it will be omitted. The spherical valve body and the temperature-responsive element are compactly arranged within the disc-shaped main body and the cap-shaped partition member, making it extremely compact.
（第３実施例）
第４図に示す第３実施例を説明する。第１実施
例とほぼ同様の構造であるので、相応する部分は
参照番号の説明に止どめる。５１は本体、５２は
入口、５３は出口、５４は弁室、５５は弁体、５
７は形状記憶合金で作つた温度応動素子、５８は
小さな孔を多数あけた隔壁、５９はスナツプ・リ
ング、６０は弁口、６１は弁座、６２は弁頭であ
る。温度応動素子５７は不可逆形状記憶型の合
金、すなわち母相の形状は記憶しているがマルテ
ンサイト相の形状は記憶していなくて、冷却され
て所定温度以下になつても自からは短くなれない
合金を用いてもよい。これを補うために弁口６０
を形成する隔壁と弁体５５の間にバイアス・スプ
リング５６を配置した。(Third Example) A third example shown in FIG. 4 will be described. Since the structure is almost the same as that of the first embodiment, explanations of corresponding parts will be limited to reference numerals. 51 is the main body, 52 is the inlet, 53 is the outlet, 54 is the valve chamber, 55 is the valve body, 5
7 is a temperature responsive element made of a shape memory alloy, 58 is a partition wall with many small holes, 59 is a snap ring, 60 is a valve port, 61 is a valve seat, and 62 is a valve head. The temperature-responsive element 57 is an irreversible shape-memory alloy, that is, it remembers the shape of the matrix phase but does not remember the shape of the martensitic phase, and cannot shorten itself even when cooled to a predetermined temperature or lower. You may also use alloys that do not have To compensate for this, valve port 60
A bias spring 56 is disposed between the partition wall forming the valve body 55 and the valve body 55.
この実施例の作動は、弁体を弁座から引き離す
ときに入口側の流体の圧力に加えて、バイアス・
スプリング５６が作用することを考慮すれば、第
１実施例とほぼ同様であり、容易に理解できるの
で省略する。 The operation of this embodiment is based on the pressure of the fluid on the inlet side when the valve body is pulled away from the valve seat.
Considering that the spring 56 acts, this is almost the same as the first embodiment and can be easily understood, so a description thereof will be omitted.
（第４実施例）
第５図に示す第４実施例を説明する。第１実施
例とほぼ同様の構造であるので、相応する部分は
参照番号の説明に止どめる。７１は本体、７２は
入口、７３は出口、７４は弁室、７５は弁体、７
７は形状記憶合金で作つた温度応動素子、７８は
中央部に大きな孔をあけた温度応動素子の支持リ
ング、７９はスナツプ・リング、８０は弁口、８
１は弁座、８２は弁頭である。(Fourth Example) A fourth example shown in FIG. 5 will be described. Since the structure is almost the same as that of the first embodiment, explanations of corresponding parts will be limited to reference numerals. 71 is the main body, 72 is the inlet, 73 is the outlet, 74 is the valve chamber, 75 is the valve body, 7
7 is a temperature-responsive element made of a shape memory alloy, 78 is a support ring for the temperature-responsive element with a large hole in the center, 79 is a snap ring, 80 is a valve opening, 8
1 is a valve seat, and 82 is a valve head.
この実施例の弁は図示の用に入口を下にして取
付けて用いる。この様にすると弁室内は液体の溜
りとなり、小さな孔を多数あけた隔壁を用いなく
ても温度応動素子は液体溜りの中に浸かる。作動
は第１実施例とほぼ同様であり、容易に理解でき
るので省略する。 The valve of this embodiment is used with the inlet facing down for purposes of illustration. In this way, the inside of the valve chamber becomes a pool of liquid, and the temperature-responsive element is immersed in the liquid pool without using a partition wall with many small holes. The operation is almost the same as that in the first embodiment and is easily understood, so a description thereof will be omitted.
（本発明の効果）
形状記憶合金で作つた温度応動素子を弁口に対
して出口側に配置したので、形状記憶合金の最高
使用温度以上に加熱されることがない。従つて、
析出現象や時効効果が起こらないので、性能が劣
悪にならない。寿命が長くなる。(Effects of the Invention) Since the temperature-responsive element made of a shape memory alloy is placed on the outlet side of the valve opening, it will not be heated above the maximum operating temperature of the shape memory alloy. Therefore,
Since precipitation phenomena and aging effects do not occur, performance does not deteriorate. Longer lifespan.
弁体を弁口に対して出口側に配置すれば、開弁
に流体の圧力を利用できるのでバイアス・スプリ
ングを省略できる。また、形状記憶合金の性能が
省悪となつた場合でも、弁口を塞がない。 If the valve body is placed on the outlet side with respect to the valve port, the pressure of the fluid can be used to open the valve, so the bias spring can be omitted. Furthermore, even if the performance of the shape memory alloy deteriorates, the valve port will not be blocked.
弁室内に液体を溜めて温度応動素子を浸ける様
にしたので、閉弁時にゆつくりと冷却される。従
つて、温度応動素子を弁口の出口側に配置して
も、形状記憶合金のマルテンサイト変態と逆変態
のサイクルの短縮を防止できる。寿命が長くな
る。 Since liquid is stored in the valve chamber and the temperature-responsive element is immersed in it, it is slowly cooled down when the valve is closed. Therefore, even if the temperature-responsive element is disposed on the outlet side of the valve port, the cycle of martensitic transformation and reverse transformation of the shape memory alloy can be prevented from being shortened. Longer lifespan.
第１図は本発明の温度応動弁の実施例の断面
図、第２図は第１図のＡ―Ａ線部断面図、第３図
から第５図はそれぞれその他の実施例の断面図で
ある。
２，２３，５２，７２：入口、３，２４，５
３，７３：出口、４，５４，７４：弁室、５，２
９，５５，７５：弁体、７，３１，５７，７７：
形状記憶合金で作つた温度応動素子、８，３０，
５８：隔壁部材、１０，２８，６０，８０：弁
口、５６：バイアス・スプリング。
FIG. 1 is a sectional view of an embodiment of the temperature-responsive valve of the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIGS. 3 to 5 are sectional views of other embodiments. be. 2, 23, 52, 72: Entrance, 3, 24, 5
3, 73: Outlet, 4, 54, 74: Valve chamber, 5, 2
9, 55, 75: Valve body, 7, 31, 57, 77:
Temperature-responsive element made of shape memory alloy, 8, 30,
58: Partition member, 10, 28, 60, 80: Valve port, 56: Bias spring.
Claims (1)
通して流入する弁室と、弁室の流体が流出する出
口とを形成し、弁口の開口部分に弁座を形成し、
弁座に着座して弁口を塞ぎ弁座から離れて弁口を
開く様に弁体を配置し、所定温度以下に冷却され
ると母相からマルテンサイト相に熱弾性型マルテ
ンサイト変態をし所定温度以上に加熱されるとそ
の逆変態をする形状記憶合金で作つた温度応動素
子を弁室内に配置し、温度応動素子が弁室内の流
体の温度に応じて変態し弁体を駆動して所定温度
以上になると弁体を弁座に着座させて弁口を塞ぐ
様にし、弁室内に液体を溜めて温度応動素子が液
体中に浸かる様にしたことを特徴とする温度応動
弁。 ２ 弁室と出口との間に小さな孔を多数あけた隔
壁を設け、弁口が塞がれているときに液体を弁室
内に溜めておく様にしたことを特徴とする特許請
求の範囲第２項記載の温度応動弁。 ３ 出口を弁室の上部に開口させ、弁室内に液体
を溜め、その液体溜りに温度応動素子が浸かる様
にしたことを特徴とする特許請求の範囲第２項記
載の温度応動弁。[Scope of Claims] 1 The valve casing forms an inlet, a valve chamber into which fluid from the inlet flows in through the valve port, and an outlet from which fluid from the valve chamber flows out, and a valve seat is formed at the opening of the valve port. ,
The valve body is arranged so that it seats on the valve seat and closes the valve port, and moves away from the valve seat to open the valve port. When the valve body is cooled to a predetermined temperature or less, the mother phase undergoes thermoelastic martensitic transformation to the martensitic phase. A temperature-responsive element made of a shape memory alloy that undergoes reverse transformation when heated above a predetermined temperature is placed inside the valve chamber, and the temperature-responsive element transforms according to the temperature of the fluid in the valve chamber and drives the valve body. A temperature-responsive valve characterized in that when the temperature exceeds a predetermined temperature, a valve body is seated on a valve seat to close a valve port, and a liquid is stored in a valve chamber so that a temperature-responsive element is immersed in the liquid. 2. Claim No. 2 characterized in that a partition wall with many small holes is provided between the valve chamber and the outlet, so that liquid is retained in the valve chamber when the valve port is closed. Temperature-responsive valve according to item 2. 3. The temperature-responsive valve according to claim 2, wherein the outlet is opened at the upper part of the valve chamber, liquid is stored in the valve chamber, and the temperature-responsive element is immersed in the liquid reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7193382A JPS58187672A (en) | 1982-04-28 | 1982-04-28 | Temperature-responsive valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7193382A JPS58187672A (en) | 1982-04-28 | 1982-04-28 | Temperature-responsive valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58187672A JPS58187672A (en) | 1983-11-01 |
| JPH0241679B2 true JPH0241679B2 (en) | 1990-09-18 |
Family
ID=13474808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7193382A Granted JPS58187672A (en) | 1982-04-28 | 1982-04-28 | Temperature-responsive valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58187672A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6310215U (en) * | 1986-07-07 | 1988-01-23 | ||
| US5655892A (en) * | 1996-08-21 | 1997-08-12 | Walbro Corporation | Thermally actuated fuel pump vapor vent valve |
| KR101715805B1 (en) * | 2016-06-09 | 2017-03-15 | (주)파워레인 | Drain valve for sprinkler pipe |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56150680A (en) * | 1980-04-23 | 1981-11-21 | Tlv Co Ltd | Temperature response valve |
| JPS5728963B2 (en) * | 1980-10-20 | 1982-06-19 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6144061Y2 (en) * | 1980-07-25 | 1986-12-12 |
-
1982
- 1982-04-28 JP JP7193382A patent/JPS58187672A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56150680A (en) * | 1980-04-23 | 1981-11-21 | Tlv Co Ltd | Temperature response valve |
| JPS5728963B2 (en) * | 1980-10-20 | 1982-06-19 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58187672A (en) | 1983-11-01 |
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