JPS58102877A - Heat-responsive valve for use in cooling liquid circulating passage of internal-combustion engine - Google Patents
Heat-responsive valve for use in cooling liquid circulating passage of internal-combustion engineInfo
- Publication number
- JPS58102877A JPS58102877A JP19836581A JP19836581A JPS58102877A JP S58102877 A JPS58102877 A JP S58102877A JP 19836581 A JP19836581 A JP 19836581A JP 19836581 A JP19836581 A JP 19836581A JP S58102877 A JPS58102877 A JP S58102877A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- temperature
- valve body
- heat
- annular
- 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
- 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
Abstract
Description
【発明の詳細な説明】
この発明は自動車等における内燃機関の冷却液循環路に
用いられる熱応動開閉弁に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thermally responsive on-off valve used in a coolant circulation path of an internal combustion engine in an automobile or the like.
従来、この種の熱応動開閉弁としては、ワックスを収容
した容器と、そのワックス中にａ＋＝置されて容器の開
口部に固定された有底コ０ムス１ノープと、そのゴムス
リーブに挿入された金属製プランツヤとからなるワック
ス式熱応動伸縮装置を使用した型式のものが知られてい
る。Conventionally, this type of heat-responsive on-off valve consists of a container containing wax, a bottomed column placed in the wax and fixed to the opening of the container, and inserted into the rubber sleeve. A type using a wax type thermal response expansion and contraction device consisting of a metal planter is known.
しかるに、この型式の熱応動開閉弁の場合は、ワックス
の配合成分の違いにより設定温度における開閉作動にバ
ラツキが生じ、また使用期間が長くなると１．前記ゴム
スリーブとシランジャとの間に塵その他の・異物が侵入
したり、ワックスが漏洩したり、ゴムスリーブが摩耗し
たりして、熱応動伸縮装置の感温伸縮性能が変化し、そ
のため熱応動開閉弁の温度−開弁特性に狂いが生じると
いう欠点がある。However, in the case of this type of heat-responsive on-off valve, there are variations in the opening/closing operation at the set temperature due to differences in the wax composition, and if the period of use is long, 1. If dust or other foreign matter enters between the rubber sleeve and the syringe, wax leaks, or the rubber sleeve wears, the temperature-sensitive expansion and contraction performance of the thermally responsive expansion device changes, and the thermally responsive There is a drawback that the temperature-valve opening characteristics of the on-off valve are distorted.
この発明は前述の欠点を排除した簡単な構造の内燃機関
冷却液循環路用熱応動開閉弁を提供することを目的とす
るものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a thermally responsive on-off valve for an internal combustion engine coolant circuit, which has a simple structure and eliminates the above-mentioned drawbacks.
次にこの発明を図示の例によって詳細に説明する。Next, the present invention will be explained in detail using illustrated examples.
図面はこの発明の一実施例を示すものであって、底部の
周囲に環状弁座１を有する横断面円形の弁箱２の周囲に
多数の通水孔６が設けられ、かつ弁箱２の開口部の外周
には取付用フランジ７が一体に設けられ、このフランジ
７は冷却液循環用配管に固定される。The drawing shows one embodiment of the present invention, in which a large number of water passage holes 6 are provided around a valve box 2 having a circular cross section and an annular valve seat 1 around the bottom. A mounting flange 7 is integrally provided on the outer periphery of the opening, and this flange 7 is fixed to the coolant circulation pipe.
円筒部分を有する箱状の弁体６の周囲に、弁箱２から突
出した位置において通水孔８が設けられ、前記弁体６の
周壁は弁箱２内に摺動自在に嵌入され、かつ弁箱２の底
板と弁体６の端板との間には、形状記憶合金により製作
されたコイル状の昇温開弁部材４が介在され、さらに弁
体６の端板の中央部に摺動自在に挿通された支持杆９の
一端部は、弁箱２の底板の中央部に螺合固定されている
。A water passage hole 8 is provided around a box-shaped valve body 6 having a cylindrical portion at a position protruding from the valve body 2, and the peripheral wall of the valve body 6 is slidably fitted into the valve body 2. A coiled temperature increasing valve opening member 4 made of a shape memory alloy is interposed between the bottom plate of the valve body 2 and the end plate of the valve body 6, and a sliding member 4 is inserted in the center of the end plate of the valve body 6. One end of the support rod 9, which is movably inserted, is screwed and fixed to the center of the bottom plate of the valve box 2.
弁体６における円筒部分の周囲に、ゴムまたは合成樹脂
からなるシールリング１０と保持リング１１とが嵌合さ
れ、その保持リング１１は弁箱２に固定され、前記シー
ルリング１０は弁箱２と保持リング１１とにより保持さ
れている。A seal ring 10 and a retaining ring 11 made of rubber or synthetic resin are fitted around the cylindrical portion of the valve body 6, and the retaining ring 11 is fixed to the valve body 2. It is held by a retaining ring 11.
また支持杆９の他端部に設けられたフラン゛り１２と弁
体６との間にはコイルばねからなる閉弁方向押圧用ばね
５が圧縮状態で介在され、そのばね５の弾力により弁体
３の端板が前記昇温開弁部材４の一端部に押付けられる
と共に、その昇温開弁部材４の他端部が弁箱２の底板に
押付けられる。Further, a spring 5 for pressing the valve in the valve closing direction, which is a coil spring, is interposed in a compressed state between the flange 12 provided at the other end of the support rod 9 and the valve body 6. The end plate of the body 3 is pressed against one end of the temperature increasing valve opening member 4, and the other end of the temperature increasing valve opening member 4 is pressed against the bottom plate of the valve box 2.
なお前記弁体６は、その水流方向の両側に圧力差があっ
ても、その差圧による押圧力を受けないように構成され
ている。The valve body 6 is configured so that even if there is a pressure difference on both sides in the water flow direction, the valve body 6 is not subjected to a pressing force due to the pressure difference.
前記昇温開弁部材４を製作する形状記憶合金としては、
例えばチタン−ニッケル合金、銅−アルミニウム合金、
銅−アルミニウム−ニッケル合金等があシ、この合金に
記憶性効果を生じさせるようなマルテンサイト変態を形
成することによって、前記合金が温度変化に応じて設定
温度に達したとき、自らの形状を記憶された形状に急激
に変化させる。The shape memory alloy used to manufacture the temperature rising valve opening member 4 is as follows:
For example, titanium-nickel alloy, copper-aluminum alloy,
Copper-aluminum-nickel alloys, etc., form a martensitic transformation that produces a memory effect in these alloys, allowing them to change their shape in response to temperature changes when a set temperature is reached. Rapidly change to the memorized shape.
すなわち、マルテンサイト変態開始点において、温度が
底下すると、昇温開弁部材４の短縮変形が開始し、マル
テンサイト変態終了点に達するとその短縮変形が停止す
る。またこの温度より外温すると逆変態開始点において
伸長変形を開始し、逆変態終了点に達すると元の長さに
復帰する。That is, when the temperature bottoms out at the martensitic transformation start point, shortening deformation of the temperature rising valve opening member 4 starts, and when the martensitic transformation ending point is reached, the shortening deformation stops. Further, when the external temperature exceeds this temperature, elongation deformation starts at the reverse transformation start point, and when the reverse transformation end point is reached, the original length is restored.
この発明を実施する場合、支持杆９と弁箱２の底板およ
び弁箱２と保持リング１１を、それぞれ接着剤によシ固
定してもよく、また弁箱２．支持杆９および保持リング
１１を合成樹脂により製作する場合は、支持杆９と弁箱
２の底板シよび弁箱２と保持リング１１を、それぞれ溶
着によシ固定してもよい。When carrying out this invention, the support rod 9 and the bottom plate of the valve body 2 and the valve body 2 and the retaining ring 11 may be fixed with adhesive, respectively. When the support rod 9 and the retaining ring 11 are made of synthetic resin, the support rod 9 and the bottom plate of the valve body 2 and the valve body 2 and the retaining ring 11 may be fixed by welding, respectively.
この発明によれば、環状弁座１を有する弁箱２とその環
状弁座１に対向する弁体６との間に、形状記憶合金製昇
温開弁部材４が介在され、かつ前記弁体３には閉弁方向
押圧用ばね５が係合されているので、前記形状記憶合金
製昇温開弁部材４の周囲の水温が上昇した場合は、その
昇温開弁部材４の伸長により、閉弁方向押圧用ばね５の
弾力に抗して弁体６を自動的に開弁方向に移動して開弁
することができ、また前記昇温開弁部材４の周囲の水温
が下降していくと、昇温開弁部材４が自動的に短縮して
いくので、閉弁方向押圧用ばね５の弾力により、弁体５
を自動的に閉弁方向に移動させて閉弁することができ、
さらに前記形状記憶合金製昇温開弁部材４は、一定温度
で正確に一定の形状を保つので、開弁開始温度を正確に
設定することができると共に、長期間使用して、も温度
−形状特性に狂いが寿ぐ、そのため長期間にわたって優
れた温度−開弁特性を発揮させることができ、しかもこ
の発明の内燃機関冷却液循環路用熱応動開閉弁は構造が
簡単である等の効果が得られる。According to this invention, the temperature-raising valve opening member 4 made of a shape memory alloy is interposed between the valve body 2 having the annular valve seat 1 and the valve body 6 facing the annular valve seat 1, and 3 is engaged with a spring 5 for pressing in the valve closing direction, so that when the water temperature around the shape memory alloy temperature increasing valve opening member 4 increases, the temperature increasing valve opening member 4 expands. The valve can be opened by automatically moving the valve body 6 in the valve opening direction against the elasticity of the spring 5 for pressing in the valve closing direction, and the temperature of the water around the temperature rising valve opening member 4 decreases. As the temperature rises, the valve opening member 4 automatically shortens, and the elasticity of the spring 5 for pressing in the valve closing direction causes the valve body 5 to shorten automatically.
The valve can be closed by automatically moving the valve in the valve-closing direction.
Furthermore, since the shape memory alloy temperature increasing valve opening member 4 maintains a constant shape at a constant temperature, it is possible to accurately set the valve opening start temperature, and even after long-term use, the temperature and shape remain unchanged. The thermal response valve for the internal combustion engine coolant circulation path of the present invention has advantages such as a simple structure and a simple structure. It will be done.
ｉ１図は、こ９発明の一実施例に係る内燃機関冷却液循
環路用熱応動開閉弁を示す正面図、第２図はその縦断正
面図である。
図において、１は環状弁座、２は弁箱、６は弁体、４は
形状記憶合金製昇温開弁部材、５は閉弁方向押圧用ばね
、６および８は通水孔、９は支持杆、１０はシールリン
グである。Fig. i1 is a front view showing a thermally responsive on-off valve for an internal combustion engine coolant circulation path according to an embodiment of the present invention, and Fig. 2 is a longitudinal sectional front view thereof. In the figure, 1 is an annular valve seat, 2 is a valve box, 6 is a valve body, 4 is a temperature-raising valve opening member made of a shape memory alloy, 5 is a spring for pressing in the valve closing direction, 6 and 8 are water holes, and 9 is a valve body. The support rod 10 is a seal ring.
Claims (1)
弁体６との間に、形状記憶合金製昇温開弁部材４が介在
され、かつ前記弁体５には閉弁方向押圧用ばね５が係合
されていることを特徴とする内燃機関冷却液循環路用熱
応動開閉弁。A temperature-raising valve opening member 4 made of a shape memory alloy is interposed between a valve body 2 having an annular valve seat 1 and a valve body 6 facing the annular valve seat 1, and the valve body 5 is provided with a valve closing member 4. A thermally responsive on-off valve for an internal combustion engine coolant circulation path, characterized in that a pressing spring 5 is engaged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19836581A JPS58102877A (en) | 1981-12-11 | 1981-12-11 | Heat-responsive valve for use in cooling liquid circulating passage of internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19836581A JPS58102877A (en) | 1981-12-11 | 1981-12-11 | Heat-responsive valve for use in cooling liquid circulating passage of internal-combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58102877A true JPS58102877A (en) | 1983-06-18 |
Family
ID=16389888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19836581A Pending JPS58102877A (en) | 1981-12-11 | 1981-12-11 | Heat-responsive valve for use in cooling liquid circulating passage of internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58102877A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0614033A1 (en) * | 1993-03-04 | 1994-09-07 | Maier Perlman | Temperature responsive 3-way line valve with shape memory alloy actuator |
-
1981
- 1981-12-11 JP JP19836581A patent/JPS58102877A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0614033A1 (en) * | 1993-03-04 | 1994-09-07 | Maier Perlman | Temperature responsive 3-way line valve with shape memory alloy actuator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20010002646A1 (en) | Multifunction rocker switch | |
| US5177963A (en) | Thermo-actuator with lubricant filled seal bag | |
| US3558046A (en) | Thermostat | |
| JPH04171274A (en) | Thermo-actuator consisting of bellows and seal bag | |
| JPS6113096A (en) | Self-aligning single valve core type temperature-regulating trap | |
| US2873070A (en) | Double opening waterline thermostat | |
| US5961037A (en) | Engine coolant thermostat with overtemperature protection | |
| US3131563A (en) | Thermal power device | |
| US2925986A (en) | Pressure operated valve | |
| US4253304A (en) | Thermal element | |
| JPS58102877A (en) | Heat-responsive valve for use in cooling liquid circulating passage of internal-combustion engine | |
| US3395580A (en) | Thermostat | |
| US2479034A (en) | Thermostatic valve | |
| US3645443A (en) | Automobile thermostat | |
| EP0432103A2 (en) | A thermostatic valve for regulating the flow of the cooling liquid in internal combustion engines | |
| JP3225386B2 (en) | Thermo elements and thermostats | |
| US3075703A (en) | Thermostatic valve | |
| US4269350A (en) | Thermostatic fluid valve with power element extension and method of constructing same | |
| US3231194A (en) | Wax type thermostat | |
| US3146946A (en) | Balanced thermostatic valve structure | |
| JPH0514066Y2 (en) | ||
| US3533552A (en) | Thermostatically actuated radiator valve | |
| US2981476A (en) | Thermostatically controlled coiled spring valve | |
| JPH0989153A (en) | Thermo actuator | |
| JPS5930283Y2 (en) | Thermostat for internal combustion engine |