JPS58121379A - Thermostat for engine cooling water - Google Patents
Thermostat for engine cooling waterInfo
- Publication number
- JPS58121379A JPS58121379A JP367982A JP367982A JPS58121379A JP S58121379 A JPS58121379 A JP S58121379A JP 367982 A JP367982 A JP 367982A JP 367982 A JP367982 A JP 367982A JP S58121379 A JPS58121379 A JP S58121379A
- Authority
- JP
- Japan
- Prior art keywords
- valve body
- water
- cooling water
- memory alloy
- valve
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2070/00—Details
- F01P2070/02—Details using shape memory alloys
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は一１自動車等のエンジン冷却水の温度制御を行
なうエンジン冷却水用サーモスタットに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an engine cooling water thermostat for controlling the temperature of engine cooling water for automobiles and the like.
自動車のエンジン七ラジェータとの間を循環するエンジ
ン冷却水の温ｆｔ調節するサーモスタットは従来から種
々のものが知られている。2. Description of the Related Art Various types of thermostats have been known for regulating the temperature of engine cooling water circulating between a radiator and a radiator of an automobile engine.
たとえに冷却水の温度に応じて膨張・収縮するワックス
エレメントを弁体駆動用感熱素子として使用し、ワック
スの熱膨張を利用して弁体を弁座に対して接離させるよ
うにしたものが広く使用されている。しかしワックスは
熱伝導性が悪く、動作遅れを生じ易い欠点があることか
ら、九とえば米国特許第３，６４５，４４３号に示され
ているようにコイル状の形状記憶合金會用込て弁体を開
閉させるようにしたもの′Ｃある。For example, a wax element that expands and contracts depending on the temperature of the cooling water is used as a thermal element to drive the valve body, and the thermal expansion of the wax is used to move the valve body toward and away from the valve seat. Widely used. However, wax has the disadvantage of poor thermal conductivity and a tendency to delay operation.9 For example, as shown in U.S. Pat. There is one that allows the body to open and close.
しかしながらこれら従来のサーモスタットは、いずれも
弁体が押し開かれる方向に水圧を受ける構造のため、た
とえはエンシン回転数が高まるなどして水圧が上昇する
と弁体が押し開かへラジェータに冷却水が流れて不必要
にエンジンが冷却され、水温が一時的に低下したｐ設定
温ＩｊＩＬまで上昇しない場合がある。特にコイル状の
形状記憶合金を用いて弁体を駆動するようにしたもので
は、ワックスエレメント使用のものに比べて弁体駆動力
が弱いため、開弁方向に水圧金堂ける構造では弁動作が
不安定になり易く、信頼性に問題があった。However, these conventional thermostats all have a structure that receives water pressure in the direction in which the valve body is pushed open. For example, when water pressure increases due to an increase in engine speed, the valve body is pushed open and cooling water flows to the radiator. Therefore, the engine may be unnecessarily cooled, and the water temperature may not rise to the temporarily lowered set temperature IjIL. In particular, when the valve body is driven using a coiled shape memory alloy, the driving force for the valve body is weaker than when using a wax element, so if the structure is such that the hydraulic valve is located in the valve opening direction, the valve operation will be impaired. It tends to become unstable and has problems with reliability.
また、上記米国特許明細書記載のものでは形状記憶合金
の外側を冷却水が流れる構造でおり、形状記憶合金に冷
却水かはとんど接触しないために水温の変化に追従しに
くく熱応答性が悪いという問題がめった。In addition, the structure described in the above US patent specification has a structure in which cooling water flows outside the shape memory alloy, and since the cooling water rarely comes into contact with the shape memory alloy, it is difficult to follow changes in water temperature and the thermal response is low. I rarely had problems with it being bad.
本発明は上記事情にもとづきなされたもので（そ。目的
よす、よ。ろゆ、弁体７、水８ＥＫより−Ｃ不必要に押
し開かれることを防止でき、安定した開閉動作が行なえ
るとともに、水温の変化に対する熱応答性の優れたエン
ジン冷却水用サーモスタットを提供することにある。The present invention has been made based on the above circumstances (so, the purpose is good, it is possible to prevent -C from being unnecessarily pushed open from the valve body 7, water 8EK, and to perform stable opening and closing operations. Another object of the present invention is to provide an engine cooling water thermostat that has excellent thermal responsiveness to changes in water temperature.
すなわち本発明は、エンジンのウォータジャケット−に
連通する第１通水路を有するとともにラジェータに連通
ずる第２通水路を備えかっこれら双方の通水路に連通可
能な通水室を内部に設けた弁箱と、この弁箱内に回動自
在に収容されかつ上記第１−第２通水路および通水室に
連通可能な連通孔を備えた弁体と、上記通水室内に収容
されかつ一端を上記弁箱側に固定するとともに他端すな
わち自由端を上記弁体側に固定したコイル状の形状記憶
合金と會具備したものである。That is, the present invention provides a valve box which has a first passageway communicating with the water jacket of the engine, a second passageway communicating with the radiator, and a water passageway chamber which can communicate with both of these passageways. a valve body rotatably housed in the valve box and having a communication hole that can communicate with the first and second water channels and the water chamber; a valve body that is housed in the water chamber and has one end connected to the water chamber; It is equipped with a coiled shape memory alloy which is fixed to the valve body side and whose other end, that is, the free end is fixed to the valve body side.
すなわち本発明の形状記憶合金線弁体ｔ−ａ動させる方
向に駆動されるものでめシ、開弁方向に水圧が加わるこ
とがないため、たとえは工／ ′シンを高１転に
するなどして水圧が上昇しても弁体が不必要に開くこと
が、なく安定した開閉動作が得られる。In other words, since the shape memory alloy wire valve body of the present invention is driven in the direction of movement, water pressure is not applied in the valve opening direction, so for example, the valve body can be turned into a high position. Even if the water pressure increases, the valve body will not open unnecessarily and stable opening/closing operation can be achieved.
また、形状記憶合金を通水室に収容したから、冷却水を
充分に形状記憶合金に接触させることができる。ま几、
エンジンから送出される高温の冷却水を第１通水路に導
入し、またラジェータから送出される低温の冷却水を第
２通水路に導入するようにし九冷却水の循環経路を採用
した場合に、これら高温および低温の冷却水を混合し水
ｆｆｉ【均一にして通水室を通過させることができるか
ら、エンジンに送られる冷却水の温＆に、通水室内に収
容した形状記憶合金が正確に感知できる。したがって熱
応答性に優れ、エンジン冷却水を一定に保つ上で非常に
有効である。Moreover, since the shape memory alloy is housed in the water passage chamber, the cooling water can be brought into sufficient contact with the shape memory alloy. Well done,
When a nine-cooling water circulation path is adopted, in which high-temperature cooling water sent from the engine is introduced into the first water passage, and low-temperature cooling water sent from the radiator is introduced into the second water passage, These high-temperature and low-temperature cooling waters can be mixed to make the water uniform and pass through the water passage chamber, so the shape memory alloy stored in the water passage chamber can accurately adjust the temperature of the cooling water sent to the engine. Can be sensed. Therefore, it has excellent thermal response and is very effective in keeping the engine cooling water constant.
以下本発明の一実施例についてＮ１図ないし第４図を参
照して＃５１．明する。第１図において図中１はエンジ
ン、２Ｆｉラジエータ、３鉱ウオータポンプ、４はサー
モスタットである。また、上記ラジェータ２の出口部と
サーモスタット４とｔ結ぶ送水路５が設けられ、かつク
ォータ４ンプ３の入口部とサーモスタット４とを結ぶ戻
“ り水路６が設けられている。また、１はパイノ
奢ス水路であって、このパイノヤス水路７は、エンジン
１のウォータジャケットとサーモスタット４とを結んで
いる。そしてこれらの水路５，６゜７によってエンジン
冷却水の循環流路を構成している。Hereinafter, referring to FIG. N1 to FIG. 4 regarding one embodiment of the present invention, #51. I will clarify. In FIG. 1, 1 is an engine, 2Fi radiator, 3 is a water pump, and 4 is a thermostat. Further, a water supply channel 5 is provided which connects the outlet of the radiator 2 and the thermostat 4, and a return channel 6 is provided which connects the inlet of the quarter pump 3 with the thermostat 4. This pinoyas waterway 7 connects the water jacket of the engine 1 and the thermostat 4.These waterways 5 and 6°7 constitute an engine cooling water circulation flow path. .
上記サーモスタット４について詳述すると、１０は弁箱
であって、この弁箱１０は図示上側の弁箱本体部１０＆
と、図示下側の弁体保持部１０ｂＩ！：ｔ−互いに連結
して構成されている。こｎら弁箱本体部１０％と弁体保
持部１０ｂはともに合成掬脂材または金属からなる。そ
して弁箱本体部１０＆内には通水室１１が形成されてお
り、この通水室１１の吐出ポート１２は戻り水路６に接
続されるようになっている。To explain the thermostat 4 in detail, 10 is a valve box.
And, the valve body holding part 10bI on the lower side of the figure! :t-Constructed by being connected to each other. The valve body main body portion 10% and the valve body holding portion 10b are both made of synthetic resin material or metal. A water passage chamber 11 is formed inside the valve box main body 10&, and a discharge port 12 of this water passage chamber 11 is connected to the return water channel 6.
一方、弁体保持部１０ｂＫは弁体収容室１３が設けられ
ているとともに、互いに対向する位置に第１通水路１４
と第２通水路１５が形成されている。そして上記第１通
水路１４はバイパス水路１に接続されてエンジン１から
の高温の冷却水が流入し、また＃！２通水路１５は送水
路５に！＃続されて２ゾエータ２からの低温の冷却水が
流入できるようになっている。また、弁体収容室１３の
底壁にストツノ臂突起１６が形成されている。On the other hand, the valve body holding part 10bK is provided with a valve body housing chamber 13, and first water passages 14 are provided at positions facing each other.
A second water passage 15 is formed. The first water passage 14 is connected to the bypass water passage 1, into which high-temperature cooling water from the engine 1 flows, and #! 2 waterway 15 becomes waterway 5! # is connected so that low temperature cooling water from the zoator 2 can flow in. Furthermore, a strut protrusion 16 is formed on the bottom wall of the valve body housing chamber 13.
そして上記弁体収容室１３に弁体２０が回動自在に収容
されている。この弁体２０は合成樹脂あるいは金属から
なり、かつ弁体収容室１３の底壁１Ｍが４＼径となるよ
うな円錐台状ｔ−なし、その上面と弁箱１０の天井壁と
の間に介在させたコイル状のバイアススプリング２１に
よって、弁箱のシール面２２に押圧されている。このシ
ール面２２には前記第１・第２通水路１４．１５の開口
部の周ｍｍ１Ｋそれぞれシールリング２３゜２４が取着
されている。The valve body 20 is rotatably housed in the valve body housing chamber 13. This valve body 20 is made of synthetic resin or metal, has a truncated conical shape such that the bottom wall 1M of the valve body housing chamber 13 has a diameter of 4\, and has a truncated conical shape between its top surface and the ceiling wall of the valve case 10. It is pressed against the sealing surface 22 of the valve body by an interposed coiled bias spring 21. Seal rings 23 and 24 are attached to the seal surface 22, respectively, each having a circumference mm1K of the opening of the first and second water passages 14 and 15.
また弁体２０に連通孔２５が形成されている。Further, a communication hole 25 is formed in the valve body 20.
この連通孔２５は、第１図に示すように前記通水室１１
に常時連通する共用連通孔２５ａと、１ 第３図に示
すように水平方向に連なルかつ、へ字状に曲りた第１連
通孔２５ｂと第２連通孔２５ｅとからなる。また、弁体
２０の底部には弁体２０の回動量を規制する係止孔２６
が設けられている。この係止孔Ｊ ｉｔ Ｆｉ、前記し
たストッパ突起１６に回動可能に欽合していて、第１連
通孔Ｊ５ｂが第１通水路１４に正対向する位置と、第２
連通孔２５＠が第２通水路１５に正対向する位置どの間
を弁体２０が回動するように、弁体２０の回動範囲を規
制するようになっている。This communication hole 25 is connected to the water passage chamber 11 as shown in FIG.
It consists of a common communication hole 25a that is always in communication with the 1. As shown in FIG. Further, a locking hole 26 is provided at the bottom of the valve body 20 to restrict the amount of rotation of the valve body 20.
is provided. This locking hole J it Fi is rotatably engaged with the stopper protrusion 16 described above, and has a position where the first communication hole J5b directly faces the first water passage 14 and a position where the second communication hole J5b directly faces the first water passage 14 .
The rotation range of the valve body 20 is restricted so that the valve body 20 rotates between the positions where the communication hole 25@ directly faces the second water passage 15.
そして通水室１１内にコイル状の形状記憶合金３０が収
容されている。この形状記憶合金３０は、熱弾性マルテ
ンサイト変態會示す形状記憶効果をもつ金属、たとえば
Ｃｕ＋ Ｚｎｒ Ａｔ系あるいは’ｒｔ 、Ｎｉ系の金
属からな夛、設定温度に達するとコイルの巻き径が大き
くなる方向つまりコイルの巻き弛み方向にねじれるよう
な形状記憶効果音もたせである。A coiled shape memory alloy 30 is housed in the water flow chamber 11. The shape memory alloy 30 is made of a metal having a shape memory effect that exhibits thermoelastic martensitic transformation, such as a Cu+ZnrAt-based metal, an RT, or a Ni-based metal, and the winding diameter of the coil increases when the set temperature is reached. It also has a shape memory sound effect that sounds like twisting in the direction of the winding and loosening of the coil.
そして形状記憶合金３０の一端３０ａは、本実施例の場
合、回転量胸節リング３１ｆ介して弁箱１０＠に固定さ
れている。この回転１−節リング３１は、第２図に示し
たように例えは論車状をなすものてありて、弁箱ＩＱの
天井壁に形成した内歯車状の受部３２に嵌合することに
より、任意の回転位置で固定できるようになっている。In the case of this embodiment, one end 30a of the shape memory alloy 30 is fixed to the valve box 10@ via a rotational chest ring 31f. As shown in FIG. 2, this rotary one-joint ring 31 is shaped like a logical wheel, and is fitted into an internal gear-shaped receiving portion 32 formed on the ceiling wall of the valve box IQ. This allows it to be fixed at any rotational position.
そして上記回転量調節リング３１の一部に形成した係止
段部３Ｊに、形状記憶合金３０の一端３０＊ｆ当接させ
ることによシ、形状記憶合金３００回り止めをなしてい
る。By bringing one end 30*f of the shape memory alloy 30 into contact with a locking step 3J formed on a portion of the rotation amount adjusting ring 31, the shape memory alloy 300 is prevented from rotating.
一方、形状記憶合金３０の他端ｓｏｂは弁体２０に形成
した係止段部３４に当接させてＴｏシ、形状記憶合金３
０がそのコイルの巻き締め方向にねじれ九ときに弁体２
０を第３図において反時計回りに回転駆動できるように
なっている。On the other hand, the other end sob of the shape memory alloy 30 is brought into contact with the locking step 34 formed on the valve body 20, and the shape memory alloy 3
When 0 is twisted in the winding direction of the coil, valve body 2
0 can be rotated counterclockwise in FIG.
また、形状記憶合金３０の外側に前記バイアススプリン
グ２１が設けられている。このバイアススゲリング２１
はステンレス等を素材としたものであって、その巻き方
向は形状記憶合金３０の巻き方向とは逆向きである。そ
してバイアススゲリング２１の一端２１＆は弁箱１０の
内面に形成した係止段部３５に当接されて回Ｑ止めがな
され、かつ他端２１ｂは弁体２０に形成し友係止段部３
６に当接されている。すなわちバイアススゲリング２１
は形状記憶合金３０の温度変化に伴なうねじル変位に対
して反対方向に反力食作用させるものである。Further, the bias spring 21 is provided outside the shape memory alloy 30. This bias Sgeling 21
is made of stainless steel or the like, and its winding direction is opposite to the winding direction of the shape memory alloy 30. One end 21& of the bias ring 21 is brought into contact with a locking step 35 formed on the inner surface of the valve body 10 to stop the rotation Q, and the other end 21b is formed on the valve body 20 and is stopped by a locking step 35 formed on the inner surface of the valve body 10.
6. That is, bias sgeling 21
This is to cause a reaction force attack in the opposite direction to the helical displacement of the shape memory alloy 30 due to a temperature change.
次に上記サーモスタット４０作用について説明する。エ
ンジン始動時のように冷却水の温度が低いうちは、形状
記憶合金５ｏＦｉその巻き締め方向にねじれるため、バ
イアススゲリング２１の反発力に抗して弁体２０を第３
図に示す位置まで回動させている。し九がって第１通水
路１４とＩＨ１連通孔２５ｂが互いに連通するとともに
、第２通水路１５は遮断される。このためエンジン１か
ら流出する冷却水は、第１図に実線矢印で示すようにバ
イパス水路１を通って第１連通孔２５ｂに流入し、通水
室Ｉノを通過して形状記憶合金３０と充分接触しつつ、
戻シ水路６からエンジン１に戻される。すなわち冷却水
はシジエータ２を通過することなくエンノン１に戻され
るため、冷却水が不必要に冷却されることを防止できる
。Next, the operation of the thermostat 40 will be explained. When the temperature of the cooling water is low, such as when starting an engine, the shape memory alloy 5oFi is twisted in the tightening direction.
It is rotated to the position shown in the figure. As a result, the first water passage 14 and the IH1 communication hole 25b communicate with each other, and the second water passage 15 is blocked. Therefore, the cooling water flowing out from the engine 1 flows into the first communication hole 25b through the bypass water channel 1 as shown by the solid line arrow in FIG. With sufficient contact,
It is returned to the engine 1 through the return waterway 6. That is, since the cooling water is returned to the ennon 1 without passing through the sigiator 2, it is possible to prevent the cooling water from being unnecessarily cooled.
そして水温が次第に上昇し、形状記憶合金３０が５ａｔ
−生じる設定温度に達すると、形状記憶合金３０がコイ
ルの巻き弛み方向にねじれ始め、かつバイアススプリン
グ２１の反力を受けるため弁体２０は第３図中の時計回
シ方向に変位する。したがって、ｗｃ１通水路１４の開
口量が減少するとともに、第２通水路１５の一部が第２
連通孔２５ｅと重なるため、第２通水路１５の冷却水が
第２連通孔Ｊｊａに流入し得る状態となる。Then, the water temperature gradually rises, and the shape memory alloy 30 becomes 5at.
- When the set temperature is reached, the shape memory alloy 30 begins to twist in the direction of winding and unwinding of the coil, and the valve body 20 is displaced in the clockwise direction in FIG. 3 due to the reaction force of the bias spring 21. Therefore, the opening amount of the wc1 water passage 14 is reduced, and a part of the second water passage 15 is
Since it overlaps with the communication hole 25e, the cooling water of the second water passage 15 can flow into the second communication hole Jja.
したがってラジェータ２を通過してき次低温の冷却水が
第２連通孔２５＠全通って通水室１１に流入するととも
に、バイパス水路１ｔ−一ってきた高温の冷却水が第１
連通孔２５ｂを通って通水室１１に流入する。そしてこ
れら高・低温の冷却水は通水室１ノで混合され、かつ形
状記憶合金３０と充分に接触しつつ、戻シ水路６をげ
経てエンジン１に戻される。Therefore, the next low-temperature cooling water that has passed through the radiator 2 flows through the second communication hole 25@ into the water passage chamber 11, and the high-temperature cooling water that has come through the bypass waterway 1t flows into the first
The water flows into the water passage chamber 11 through the communication hole 25b. These high and low temperature cooling waters are mixed in the water passage chamber 1, and are brought into contact with the shape memory alloy 30 through the return water passage 6.
After that, it is returned to engine 1.
以上のように水温に応じて形状配憶合金３０のねじり角
が変化し、弁体２０が変位することによって第１通水路
１４と第２通水路１５の開口量が変化する。つまシ、水
温が高くなり過ぎると弁体２０の変位量が大となって第
２通水路１５の開口量が増加し、これによシラジェータ
２からの低温冷却水の量が増大して冷却能力が増加する
。まえ、逆に水温が低くなシ過ぎると弁体２＃の変位量
が小となって第１通水路１４の開口量が増加し、高温の
冷却水量が増すことに２９冷却能力が低下する。したが
って冷却水を一定の温度に保つことができる。As described above, the torsion angle of the shape memory alloy 30 changes depending on the water temperature, and the displacement of the valve body 20 causes the opening amounts of the first water passage 14 and the second water passage 15 to change. However, when the water temperature becomes too high, the amount of displacement of the valve body 20 becomes large, and the opening amount of the second passageway 15 increases, which increases the amount of low-temperature cooling water from the sill jeter 2 and reduces the cooling capacity. increases. On the other hand, if the water temperature is too low, the amount of displacement of the valve body 2# becomes small, the opening amount of the first water passage 14 increases, the amount of high temperature cooling water increases, and the cooling capacity 29 decreases. Therefore, the cooling water can be kept at a constant temperature.
また、水温が通常の使用状態以上に上昇した場合には、
形状記憶合金３０のねじれ量は最大となり、弁体２ｏは
第２連通孔２５ｃが第２通水路１５に合致する位置まで
変位し、その開口量が最大になるとともに第１通水路１
４は趣断される。よってラジェータ２を通過する低温冷
却水の量が最大となシ、冷却効果は最大となる。In addition, if the water temperature rises above normal usage conditions,
The amount of twist of the shape memory alloy 30 becomes maximum, and the valve body 2o is displaced to a position where the second communication hole 25c matches the second water passage 15, and its opening amount becomes maximum, and the first water passage 1
4 is rejected. Therefore, the amount of low-temperature cooling water passing through the radiator 2 is maximized, and the cooling effect is maximized.
しかして上記実ｔＩＩＡ例によれは、弁体２ｏは（ロ）
□転式であ夛、送水路５ｔたはパイノｆス水路１
がら流入する冷却水の水圧が弁体ＳＯ（開弁させる方向
に作用することがないから、たとえばエンジン１０回転
が高まって水圧が上昇しても弁体２０が開くという不具
合は生じない。However, according to the above actual tIIA example, the valve body 2o is (b)
□Diversion type, 5t water supply channel or 1 pinos waterway
Since the water pressure of the cooling water flowing in does not act in the direction of opening the valve body SO, for example, even if the engine speed increases by 10 rpm and the water pressure increases, the problem of the valve body 20 opening does not occur.
そして形状記憶合金３０を通水室１）に収容したから、
エンジン１から直接送出される高温の冷却水とラジェー
タ２から送出される低温の冷却水とが混合された水管形
状記憶合金３０に充分に接触させることができる。した
がってエンジン１に戻される直前の水温を正確に感知で
き、水温の一足制御を図る上で非常に効果的である。Then, since the shape memory alloy 30 was accommodated in the water passage chamber 1),
The high temperature cooling water directly sent from the engine 1 and the low temperature cooling water sent from the radiator 2 can be brought into sufficient contact with the mixed water tube shape memory alloy 30. Therefore, the temperature of the water immediately before it is returned to the engine 1 can be accurately sensed, which is very effective in controlling the water temperature.
また、回転量調節リング３１を受部３２に対して着脱可
能として調節リング３１の回転位置ｔＩＩＩｌｉ！整で
きるようＫしたから、形状記憶合金３０のねじれ位置を
任意に調節できるという利点もある。Further, the rotation amount adjusting ring 31 is made detachable from the receiving part 32 so that the rotational position of the adjusting ring 31 is tIIIli! Since the shape memory alloy 30 is adjusted so that it can be adjusted, there is an advantage that the twist position of the shape memory alloy 30 can be adjusted as desired.
なお、上記実施例では温度上昇によって形状記憶合金が
巻き弛み方向に変位するタイプのものを用いたが、これ
とは逆に温度上昇によってコイルの巻き締め方向に変位
する形状記憶合金を用いてもよい。In addition, in the above example, a type of shape memory alloy was used in which the shape memory alloy is displaced in the direction of loosening the coil as the temperature rises, but conversely, a shape memory alloy that is displaced in the direction of tightening the coil as the temperature rises may also be used. good.
まえ、本発明のサーモスタットは、第５図に示したよう
に、上記実施例とは逆向きの位置、つｔクエンジン１の
冷却水出口側にサーモスタット４を設けたエンジン冷却
水循環系にも同様に適用できる。この場合のサーモスタ
ット４の構造および機能は上記実施例と同一のものが採
用できるから、共通部位に同一符号を付して説明は省略
する。かかる冷却水循環系では、エンジン１のウォータ
ジャケットから送出された冷却水が直接通水室１１に流
入するため、エンジン水温を更に適確に感知できる。な
お、通水室１１を通過しえ冷却水が弁体１０ｆ経て第１
通水路１４と第２通水路１１に分配されてそれぞれエン
ジン１およびラジェータ２に送り出される点では前記ｌ
Ｉ！施例と全く同様である。As shown in FIG. 5, the thermostat of the present invention can also be applied to the engine cooling water circulation system in which the thermostat 4 is provided in a position opposite to that of the above embodiment, on the cooling water outlet side of the engine 1. Applicable to The structure and function of the thermostat 4 in this case can be the same as those in the above embodiment, so common parts will be given the same reference numerals and explanations will be omitted. In such a cooling water circulation system, since the cooling water sent out from the water jacket of the engine 1 directly flows into the water passage chamber 11, the engine water temperature can be detected more accurately. Note that the cooling water that passes through the water passage chamber 11 passes through the valve body 10f and then enters the first
The above l is distributed into the water passage 14 and the second water passage 11 and sent to the engine 1 and the radiator 2, respectively.
I! It is exactly the same as the example.
本発明は前記したように、弁体の駆動用素子として形状
記憶合金を用いたものにおいて、弁体の作動信頼性が向
上し、かつ熱応答性が大幅に向上し、エンジン冷却水温
を一定に保つ上で大きな効果を奏する。As described above, the present invention uses a shape memory alloy as a drive element for a valve body, which improves the operational reliability of the valve body, significantly improves thermal response, and maintains a constant engine cooling water temperature. It has a great effect on maintaining
＠１図ないし第４図は本発明の一実施例を示し、３１１
１図はサーモスタットの縦断面図、第２図は＠１図中の
Ｉｔ−１線に沿う断面図、第３図は第１図中のト１線に
沿う断面図、＃Ｉ４図は弁体の斜視図、嬉５図は本発明
の他の実施例を示す冷却水循環系の概略図である。
１・・・エンジン、２・・・ラジェータ、４・・・サー
モスタット、１０・・・弁箱、１１・・・通水室、１４
・・・＃！１通水路、１５・・・＃！２通水路、２０・
・・弁体、２５・・・連通孔、３０・・・形状配憶合金
、３０１・・・一端、３０ｂ・・・他端。
出願人代理人 弁理士 鈴 江 武 彦第１１！Ｉ@Figures 1 to 4 show an embodiment of the present invention, and 311
Figure 1 is a longitudinal sectional view of the thermostat, Figure 2 is a sectional view taken along line It-1 in Figure @1, Figure 3 is a sectional view taken along line T1 in Figure 1, and Figure #I4 is a valve body. Figure 5 is a schematic diagram of a cooling water circulation system showing another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Engine, 2...Radiator, 4...Thermostat, 10...Valve box, 11...Water chamber, 14
...#! 1 channel, 15...#! 2 channels, 20・
...Valve body, 25...Communication hole, 30...Shape memory alloy, 301...One end, 30b...Other end. Applicant's representative Patent attorney Takehiko Suzue 11th! I
Claims (2)
１通水路を有するとともにラジェータに連通ずる第２通
水路を備えかつこれら双方の通水路に連通可能な通水室
を、内部に備えた弁箱と、この弁箱内に回動自在に収容
されかつ上記第１・８２通水路および通水室にそれぞれ
連通可能な連通孔を備えた弁体と、 上起通氷室内に収容されかつ一端を上記弁箱側に固定す
るとともに他端を上記弁体側に固足し、上記通水室を流
れる冷却水の温度に応じてねじれて変形するコイル状の
形状記憶合金とを具備したこと１−＊黴とするエンジン
冷却水用サーモスタット。(1) A valve box that has a first passageway that communicates with the water jacket of the engine, a second passageway that communicates with the radiator, and a waterflow chamber that can communicate with both of these passageways; a valve body rotatably housed in the valve box and provided with a communication hole capable of communicating with the first and 82nd water passageways and the water passage chamber; and a valve body housed in the upper ice chamber and having one end connected to the valve body. A coil-shaped shape memory alloy is fixed to the box side and the other end is fixed to the valve body side, and is twisted and deformed according to the temperature of the cooling water flowing through the water flow chamber. Thermostat for engine cooling water.
台状ｔなし、その上面と弁箱の天井壁との間に介在した
バイアススゲリングの弾発力によりシール面に押圧され
ること全１＃黴とする特許請求の範囲第（１）項記載の
エンジン冷却水用サーモスタット。(2) The above valve body does not have a truncated conical shape with a smaller diameter on the bottom wall side of the valve box, and is pressed against the sealing surface by the elastic force of the bias gelling interposed between its top surface and the ceiling wall of the valve box. The engine cooling water thermostat according to claim (1), wherein the engine cooling water thermostat is made of 1# mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP367982A JPS58121379A (en) | 1982-01-13 | 1982-01-13 | Thermostat for engine cooling water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP367982A JPS58121379A (en) | 1982-01-13 | 1982-01-13 | Thermostat for engine cooling water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58121379A true JPS58121379A (en) | 1983-07-19 |
Family
ID=11564093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP367982A Pending JPS58121379A (en) | 1982-01-13 | 1982-01-13 | Thermostat for engine cooling water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58121379A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0735261A (en) * | 1993-07-20 | 1995-02-07 | Fuji Seiko Kk | Mixing valve |
| US6257177B1 (en) | 1998-03-04 | 2001-07-10 | Daimlerchrysler Ag | Water pump for the cooling circuit of an internal combustion engine |
| WO2009025629A1 (en) * | 2007-08-21 | 2009-02-26 | Kirpart Otomotiv Parçalari Sanayi Ve Ticaret Anonim Şirketi | Thermostat with shape memory alloy control for internal combustion engine |
| EP2886822A1 (en) * | 2013-12-18 | 2015-06-24 | DEUTZ Aktiengesellschaft | Cooling water regulation |
| WO2023176635A1 (en) * | 2022-03-18 | 2023-09-21 | Nok株式会社 | Valve device |
-
1982
- 1982-01-13 JP JP367982A patent/JPS58121379A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0735261A (en) * | 1993-07-20 | 1995-02-07 | Fuji Seiko Kk | Mixing valve |
| US6257177B1 (en) | 1998-03-04 | 2001-07-10 | Daimlerchrysler Ag | Water pump for the cooling circuit of an internal combustion engine |
| WO2009025629A1 (en) * | 2007-08-21 | 2009-02-26 | Kirpart Otomotiv Parçalari Sanayi Ve Ticaret Anonim Şirketi | Thermostat with shape memory alloy control for internal combustion engine |
| EP2886822A1 (en) * | 2013-12-18 | 2015-06-24 | DEUTZ Aktiengesellschaft | Cooling water regulation |
| DE102013021090B4 (en) * | 2013-12-18 | 2021-02-04 | Deutz Aktiengesellschaft | Cooling water control |
| WO2023176635A1 (en) * | 2022-03-18 | 2023-09-21 | Nok株式会社 | Valve device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208859893U (en) | Water path connecting device and water-heater system | |
| JPS58121379A (en) | Thermostat for engine cooling water | |
| JPS63106178A (en) | Controller for hydrodynamic steering means, etc. | |
| US6050495A (en) | Bottom bypass structure of thermostat device | |
| CA2152445A1 (en) | Temperature and pressure resistant shutoff valve | |
| US3380466A (en) | Thermostatic by-pass valves | |
| JPS60192889A (en) | Rotating blade pump | |
| JP2652675B2 (en) | Ball valve | |
| JP2590979B2 (en) | Flow control valve for car heater | |
| JPS5824692Y2 (en) | thermo valve | |
| JPS58102879A (en) | Thermo-valve | |
| JP3449049B2 (en) | Flow control valve | |
| DK171356B1 (en) | Valve for a plant with a heat-carrying medium | |
| EP1676065B1 (en) | A regulator insert with hydraulic damping in outlet | |
| JPH0338529Y2 (en) | ||
| JP2591870Y2 (en) | Thermostatic mixing valve | |
| SU421840A1 (en) | 'LPG-REGULATING DISC VALVE BODY | |
| JPS6056624A (en) | Hot-water type heating device | |
| US3327944A (en) | Automatic balance valve | |
| JPH063143Y2 (en) | Thermostat structure in internal combustion engine | |
| JPH0123002Y2 (en) | ||
| SU1225973A1 (en) | Multipurpose valve | |
| JPH02229974A (en) | Freezing preventing valve for city water | |
| JPS58110808A (en) | Thermostat for cooling water of engine | |
| JPS639648Y2 (en) |