JPH0988598A - Thermostat valve - Google Patents
Thermostat valveInfo
- Publication number
- JPH0988598A JPH0988598A JP24914695A JP24914695A JPH0988598A JP H0988598 A JPH0988598 A JP H0988598A JP 24914695 A JP24914695 A JP 24914695A JP 24914695 A JP24914695 A JP 24914695A JP H0988598 A JPH0988598 A JP H0988598A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- bypass
- valve
- main
- closing 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
Landscapes
- Temperature-Responsive Valves (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はエンジンの冷却装置
における冷却水回路に介装されるサーモスタット弁に関
し、特に冷却水のバイパス回路を開閉するバイパス開閉
弁を有するサーモスタット弁に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermostat valve provided in a cooling water circuit in an engine cooling device, and more particularly to a thermostat valve having a bypass opening / closing valve for opening / closing a cooling water bypass circuit.
【０００２】[0002]
【従来の技術】従来から、エンジンの冷却装置として、
例えば実開昭６３−６３５２９号公報に開示されている
ように、エンジンの冷却水通路とラジエータとを接続す
る冷却水の主循環回路と、冷却水温度が低いときにラジ
エータをバイパスさせて冷却水を循環させるためのバイ
パス回路とを備え、その主循環回路とバイパス回路の合
流部に、主循環回路を冷却水温度に応じて開閉する主開
閉弁とこの主開閉弁に連動してバイパス回路を開閉する
バイパス開閉弁とを有するサーモスタット弁を配設した
ものが知られている。2. Description of the Related Art Conventionally, as an engine cooling device,
For example, as disclosed in Japanese Utility Model Laid-Open No. 63-63529, a cooling water main circulation circuit that connects a cooling water passage of an engine and a radiator and a cooling water that bypasses the radiator when the cooling water temperature is low. And a bypass circuit for circulating the main circulation circuit, and a main opening / closing valve that opens and closes the main circulation circuit according to the cooling water temperature and a bypass circuit linked to this main opening / closing valve at the junction of the main circulation circuit and the bypass circuit. It is known that a thermostat valve having a bypass opening / closing valve that opens / closes is provided.
【０００３】この種のエンジンの冷却装置とサーモスタ
ット弁について、図３、図４を参照して説明する。図３
において、２１はエンジン、２２はラジエータであり、
エンジン２１の冷却水出口２１ａとラジエータ２２の冷
却水入口２２ａが送出管２３ａにて接続され、ラジエー
タ２２の冷却水出口２２ｂとエンジン２１の冷却水入口
２１ｂが還流管２３ｂにて接続され、エンジン２１に配
設されたウォータポンプ２３ｃにてエンジン２１とラジ
エータ２２の間で冷却水を循環させる主循環回路２３が
構成されている。主循環回路２３におけるエンジン２１
の冷却水入口２１ｂにサーモスタット弁２４が配設され
ている。このサーモスタット弁２４は還流管２３ｂが接
続される入口２４ａ、ウォータポンプ２３ｃに接続され
る出口２４ｂ、ヒータ回路接続口２４ｃ、バイパス回路
接続口２４ｄを有している。エンジン２１の冷却水出口
２１ａからは途中にヒータ２５が介装されたヒータ回路
２６とバイパス回路２７とが分岐され、それぞれサーモ
スタット弁２４のヒータ回路接続口２４ｃとバイパス回
路接続口２４ｄに接続されている。An engine cooling device and a thermostat valve of this type will be described with reference to FIGS. 3 and 4. FIG.
, 21 is an engine, 22 is a radiator,
The cooling water outlet 21a of the engine 21 and the cooling water inlet 22a of the radiator 22 are connected by a delivery pipe 23a, and the cooling water outlet 22b of the radiator 22 and the cooling water inlet 21b of the engine 21 are connected by a return pipe 23b. A main circulation circuit 23 that circulates the cooling water between the engine 21 and the radiator 22 is configured by the water pump 23c disposed in the. Engine 21 in main circulation circuit 23
A thermostat valve 24 is provided at the cooling water inlet 21b. The thermostat valve 24 has an inlet 24a connected to the reflux pipe 23b, an outlet 24b connected to the water pump 23c, a heater circuit connection port 24c, and a bypass circuit connection port 24d. From the cooling water outlet 21a of the engine 21, a heater circuit 26 in which a heater 25 is interposed and a bypass circuit 27 are branched and connected to a heater circuit connection port 24c and a bypass circuit connection port 24d of the thermostat valve 24, respectively. There is.
【０００４】サーモスタット弁２４は、図４に示すよう
に、入口２４ａと出口２４ｂの間に主開閉弁２８が配設
され、出口２４ｂとヒータ回路接続口２４ｃは連通さ
れ、出口２４ｂとバイパス回路接続口２４ｄとの間にバ
イパス開閉弁２９が配設され、主開閉弁２８とバイパス
開閉弁２９とが互いに背反的に開閉するように連結され
るとともに、冷却水温度に応じて作動する熱応動部３０
にて冷却水温度が所定温度より低いときに、図示の如く
主開閉弁２８を閉じてバイパス開閉弁２９を開き、所定
温度以上になると主開閉弁２８を開いてバイパス開閉弁
２９を閉じるように構成されている。As shown in FIG. 4, the thermostat valve 24 has a main opening / closing valve 28 disposed between an inlet 24a and an outlet 24b, the outlet 24b and a heater circuit connecting port 24c communicate with each other, and the outlet 24b and a bypass circuit connecting. A bypass opening / closing valve 29 is disposed between the opening 24d and the main opening / closing valve 28 and the bypass opening / closing valve 29 are connected so as to open and close in a contradictory manner, and a thermal responsive section that operates according to the cooling water temperature. Thirty
When the cooling water temperature is lower than the predetermined temperature, the main opening / closing valve 28 is closed and the bypass opening / closing valve 29 is opened as shown in the figure, and when the temperature exceeds a predetermined temperature, the main opening / closing valve 28 is opened and the bypass opening / closing valve 29 is closed. It is configured.
【０００５】また、図５に示すように、バイパス回路２
７を省略してバイパス開閉弁２９を有しないサーモスタ
ット弁２４を用いたものも知られている。Further, as shown in FIG. 5, the bypass circuit 2
It is also known to use the thermostat valve 24 without the bypass opening / closing valve 29 by omitting 7.
【０００６】[0006]
【発明が解決しようとする課題】ところが、図４のサー
モスタット弁２４を用いた図３のエンジンの冷却装置で
は、主開閉弁２８を閉じた状態では、図３に矢印で示す
ように冷却水はヒータ回路２６とバイパス回路２７を通
ってエンジン２１に還流するが、ヒータ回路２６は通路
抵抗が大きいために、冷却水の殆どがバイパス回路２７
を通ることになり、ヒータ回路２６を通る冷却水の流量
が少ないためにヒータ２５が有効に作用せず、ヒータ２
５の効きが遅くなるという問題があった。However, in the engine cooling device of FIG. 3 using the thermostat valve 24 of FIG. 4, when the main opening / closing valve 28 is closed, the cooling water will not flow as shown by the arrow in FIG. Although it returns to the engine 21 through the heater circuit 26 and the bypass circuit 27, most of the cooling water is bypass circuit 27 because the heater circuit 26 has a large passage resistance.
Since the flow rate of the cooling water passing through the heater circuit 26 is small, the heater 25 does not operate effectively and the heater 2
There was a problem that the effectiveness of 5 was delayed.
【０００７】一方、図５に示したエンジンの冷却装置で
は、冷却水の全量がヒータ回路２６を経由して還流する
ので、ヒータ２５の効きは早いが、バイパス通路２７が
無いために、ヒータ回路２６の通路抵抗によりウォータ
ポンプ２３ｃの上流側が負圧となって、ウォータポンプ
２３ｃにキャビテーションが発生したり、主開閉弁２８
が強制開弁されてしまうという問題があった。On the other hand, in the engine cooling device shown in FIG. 5, the entire amount of the cooling water flows back through the heater circuit 26, so that the heater 25 is effective, but since the bypass passage 27 is not provided, the heater circuit is not provided. Due to the passage resistance of 26, the upstream side of the water pump 23c becomes a negative pressure and cavitation occurs in the water pump 23c, and the main opening / closing valve 28
Was forced to open the valve.
【０００８】本発明は、このような従来の問題点に鑑
み、ヒータ回路に冷却水が十分に流れてヒータの効きが
速くかつキャビテーションや主開閉弁の強制開弁を生じ
る恐れのないサーモスタット弁を提供することを目的と
する。In view of such conventional problems, the present invention provides a thermostat valve in which the cooling water sufficiently flows into the heater circuit, the effect of the heater is fast, and there is no possibility of cavitation or forced opening of the main opening / closing valve. The purpose is to provide.
【０００９】[0009]
【課題を解決するための手段】本発明は、主循環回路と
主循環回路の一部をバイパスするヒータ回路とバイパス
回路の合流部に配置され、冷却水温度に応じて主循環回
路を開閉する主開閉弁と、主開閉弁が主循環回路を開い
たときにバイパス回路を閉じるように主開閉弁と連動し
て作動するバイパス開閉弁とを有するサーモスタット弁
において、主開閉弁が主循環回路を閉じている状態で、
バイパス開閉弁が所定付勢力でバイパス回路を閉じ、所
定以上の差圧が生じたときに開くように構成することに
より、主開閉弁が開いたときにはバイパス開閉弁は閉
じ、主開閉弁が閉じたときにも所定付勢力でバイパス開
閉弁を閉じてヒータ回路に冷却水が十分に流れるように
し、かつバイパス開閉弁が閉じられているためにウォー
タポンプに接続されている出口側の圧力が低くなるとバ
イパス回路との差圧により所定付勢力に抗してバイパス
開閉弁が開かれてバイパス回路から冷却水が流れてウォ
ータポンプのキャビテーションの発生を防止し、主開閉
弁の強制開弁を防止するようにした。According to the present invention, a main circulation circuit and a heater circuit for bypassing a part of the main circulation circuit are arranged at the confluence of the bypass circuit, and the main circulation circuit is opened / closed in accordance with the cooling water temperature. In a thermostat valve having a main opening / closing valve and a bypass opening / closing valve that operates in conjunction with the main opening / closing valve so as to close the bypass circuit when the main opening / closing valve opens the main circulation circuit, the main opening / closing valve closes the main circulation circuit. In the closed state,
The bypass opening / closing valve closes the bypass circuit with a predetermined biasing force and opens when a pressure difference of a predetermined value or more occurs, so that the bypass opening / closing valve closes when the main opening / closing valve opens and the main opening / closing valve closes. Even when the bypass opening / closing valve is closed with a predetermined urging force to allow the cooling water to sufficiently flow in the heater circuit, and the bypass opening / closing valve is closed, the pressure on the outlet side connected to the water pump becomes low. Due to the pressure difference with the bypass circuit, the bypass opening / closing valve is opened against the predetermined urging force, the cooling water flows from the bypass circuit, and the cavitation of the water pump is prevented from occurring and the forced opening / closing of the main opening / closing valve is prevented. I chose
【００１０】[0010]
【発明の実施の形態】以下、本発明の一実施形態を図
１、図２を参照して説明する。DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described below with reference to FIGS.
【００１１】図１において、１はエンジン、２はラジエ
ータであり、エンジン１の冷却水出口１ａとラジエータ
２の冷却水入口２ａが送出管３ａにて接続され、ラジエ
ータ２の冷却水出口２ｂとエンジン１の冷却水入口１ｂ
が還流管３ｂにて接続され、エンジン１に配設されたウ
ォータポンプ３ｃにて冷却水をエンジン１とラジエータ
２の間で循環させる主循環回路３が構成されている。主
循環回路３におけるエンジン１の冷却水入口１ｂにサー
モスタット弁４が配設されている。このサーモスタット
弁４は還流管３ｂが接続される入口４ａ、ウォータポン
プ３ｃに接続される出口４ｂ、ヒータ回路接続口４ｃ、
バイパス回路接続口４ｄを有している。In FIG. 1, 1 is an engine, 2 is a radiator, the cooling water outlet 1a of the engine 1 and the cooling water inlet 2a of the radiator 2 are connected by a delivery pipe 3a, and the cooling water outlet 2b of the radiator 2 is connected to the engine. 1 cooling water inlet 1b
Are connected by a return pipe 3b, and a water pump 3c arranged in the engine 1 constitutes a main circulation circuit 3 for circulating cooling water between the engine 1 and the radiator 2. A thermostat valve 4 is arranged at the cooling water inlet 1b of the engine 1 in the main circulation circuit 3. The thermostat valve 4 has an inlet 4a connected to the reflux pipe 3b, an outlet 4b connected to the water pump 3c, a heater circuit connection port 4c,
It has a bypass circuit connection port 4d.
【００１２】エンジン１の冷却水出口１ａからは途中に
ヒータ５が介装されたヒータ回路６とバイパス回路７と
が分岐され、それぞれサーモスタット弁４のヒータ回路
接続口４ｃとバイパス回路接続口４ｄに接続されてい
る。From the cooling water outlet 1a of the engine 1, a heater circuit 6 in which a heater 5 is interposed and a bypass circuit 7 are branched, and are respectively connected to a heater circuit connection port 4c and a bypass circuit connection port 4d of the thermostat valve 4. It is connected.
【００１３】サーモスタット弁４は、図２に示すよう
に、入口４ａと出口４ｂの間に主開閉弁８が配設され、
出口４ｂとヒータ回路接続口４ｃは連通され、出口４ｂ
とバイパス回路接続口４ｄとの間にバイパス開閉弁９が
配設されている。主開閉弁８は冷却水温度に応じて作動
する熱応動部１０に連結された作動軸１１に固定されて
おり、冷却水温度が所定温度より低いときには、図２
（ａ）に示すように主開閉弁８が閉じ、所定温度以上に
なると、図２（ｂ）に示すように主開閉弁８が開くよう
に構成されている。一方、バイパス開閉弁９はバイパス
回路接続口４ｄの弁座１２に対して遠近方向に摺動自在
に作動軸１１に装着され、かつ熱応動部１０の下端とバ
イパス開閉弁９の上面との間に介装されたばね１３にて
弁座１２に圧接するように所定付勢力にて付勢されてい
る。As shown in FIG. 2, the thermostat valve 4 has a main opening / closing valve 8 disposed between an inlet 4a and an outlet 4b.
The outlet 4b and the heater circuit connection port 4c communicate with each other, and the outlet 4b
A bypass opening / closing valve 9 is arranged between the bypass circuit connecting port 4d and the bypass circuit connecting port 4d. The main opening / closing valve 8 is fixed to an operating shaft 11 connected to a heat responsive portion 10 that operates according to the temperature of the cooling water, and when the temperature of the cooling water is lower than a predetermined temperature,
As shown in FIG. 2A, the main opening / closing valve 8 is closed, and when the temperature exceeds a predetermined temperature, the main opening / closing valve 8 is opened as shown in FIG. 2B. On the other hand, the bypass opening / closing valve 9 is mounted on the operating shaft 11 slidably in the perspective direction with respect to the valve seat 12 of the bypass circuit connection port 4d, and is located between the lower end of the heat responsive portion 10 and the upper surface of the bypass opening / closing valve 9. A spring 13 interposed between the valve seat 12 and the valve seat 12 presses the valve seat 12 with a predetermined biasing force.
【００１４】なお、主開閉弁８が開いている図２（ｂ）
の状態では、バイパス開閉弁９はばね１３の付勢力が大
きくなり、若しくは熱応動部１０と係合することにより
閉じた状態を保持するように構成されている。また、１
４はサーモスタット弁４の本体フレーム、１５は作動軸
１１をその軸芯方向に移動自在に支持する支軸、１６は
熱応動部１０の外周を移動自在にガイドするガイド枠、
１７は作動軸１１及び主開閉弁８を閉じる方向に付勢す
るようにガイド枠１６の下端と主開閉弁８の下面との間
に介装されたばねである。The main open / close valve 8 is open as shown in FIG. 2 (b).
In this state, the bypass opening / closing valve 9 is configured to maintain the closed state by increasing the biasing force of the spring 13 or engaging with the heat responsive portion 10. Also, 1
4 is a main body frame of the thermostat valve 4, 15 is a support shaft for movably supporting the actuating shaft 11 in its axial direction, 16 is a guide frame for movably guiding the outer periphery of the heat responsive portion 10,
Reference numeral 17 denotes a spring that is interposed between the lower end of the guide frame 16 and the lower surface of the main opening / closing valve 8 so as to urge the operating shaft 11 and the main opening / closing valve 8 in the closing direction.
【００１５】以上の構成において、冷却水温度が低いと
きには、図２（ａ）に示すように、主開閉弁８がばね１
７の付勢力にて主循環回路３を閉じている。また、その
状態で、バイパス開閉弁９はばね１３による所定の付勢
力にてバイパス回路７を閉じている。従って、ヒータ回
路６の流通抵抗が多少大きくても、冷却水はバイパス通
路７を通ることなく、ヒータ回路６を通ることになり、
ヒータ５が効果的に機能してその効きが早くなる。しか
も、ヒータ回路６の流通抵抗が高く、かつウォータポン
プ３ｃの回転数が高くなって、ウォータポンプ３ｃに接
続されている出口４ｂ側の圧力が低くなり、バイパス回
路７との差圧が所定以上になると、バイパス開閉弁９は
ばね１３の付勢力に抗して開いてバイパス通路６の冷却
水が出口４ｂからウォータポンプ３ｃに向けて流れるた
め、ウォータポンプ３ｃのキャビテーションの発生を防
止し、主開閉弁８が強制的に開弁されるのを防止するこ
とができる。In the above construction, when the temperature of the cooling water is low, the main opening / closing valve 8 has the spring 1 as shown in FIG. 2 (a).
The main circulation circuit 3 is closed by the urging force of 7. Further, in this state, the bypass opening / closing valve 9 closes the bypass circuit 7 by a predetermined biasing force of the spring 13. Therefore, even if the flow resistance of the heater circuit 6 is somewhat large, the cooling water will pass through the heater circuit 6 without passing through the bypass passage 7,
The heater 5 functions effectively and its effectiveness is accelerated. Moreover, the flow resistance of the heater circuit 6 is high, the rotation speed of the water pump 3c is high, the pressure on the outlet 4b side connected to the water pump 3c is low, and the pressure difference with the bypass circuit 7 is more than a predetermined value. Then, the bypass opening / closing valve 9 opens against the biasing force of the spring 13 and the cooling water in the bypass passage 6 flows from the outlet 4b toward the water pump 3c, so that the cavitation of the water pump 3c is prevented, It is possible to prevent the on-off valve 8 from being forcibly opened.
【００１６】一方、冷却水温度が高くなると、図２
（ｂ）に示すように、熱応動部１０が作動して作動軸１
１を介して主開閉弁８がばね１７の付勢力に抗して開か
れ、冷却水が主循環回路３を循環するとともに、ヒータ
回路６を流通するようになる。また、このときはバイパ
ス開閉弁９は閉じるので、冷却水がバイパス回路７を流
通してラジエータ２をバイパスすることはなく、効率的
に冷却水を冷却してエンジン１の過熱を防止することが
できる。On the other hand, when the temperature of the cooling water rises, as shown in FIG.
As shown in (b), the thermal actuator 10 operates and the operating shaft 1
The main opening / closing valve 8 is opened via 1 against the biasing force of the spring 17, and the cooling water circulates in the main circulation circuit 3 and also in the heater circuit 6. Further, at this time, since the bypass opening / closing valve 9 is closed, the cooling water does not flow through the bypass circuit 7 and bypasses the radiator 2, and the cooling water is efficiently cooled to prevent overheating of the engine 1. it can.
【００１７】[0017]
【発明の効果】本発明のサーモスタット弁によれば、以
上のように主循環回路と主循環回路の一部をバイパスす
るヒータ回路とバイパス回路の合流部に配置され、冷却
水温度に応じて主循環回路を開閉する主開閉弁と、主開
閉弁が主循環回路を開いたときにバイパス回路を閉じる
ように主開閉弁と連動して作動するバイパス開閉弁とを
有するサーモスタット弁において、主開閉弁が主循環回
路を閉じている状態で、バイパス開閉弁が一定付勢力で
バイパス回路を閉じ、一定以上の差圧が生じたときに開
くように構成したので、主開閉弁が閉じたときにも一定
付勢力でバイパス開閉弁が閉じられているため、ヒータ
回路に冷却水が十分に流れ、ヒータの効きを早くするこ
とができ、かつバイパス開閉弁が閉じられているために
ウォータポンプに接続されている出口側の圧力がある程
度以上低くなった場合にはバイパス回路との差圧により
一定付勢力に抗してバイパス開閉弁が開かれてバイパス
回路から冷却水が流れるため、ウォータポンプのキャビ
テーションの発生を確実に防止でき、また主開閉弁の強
制開弁を防止することができる。As described above, according to the thermostat valve of the present invention, the main circulation circuit and the heater circuit that bypasses a part of the main circulation circuit are arranged at the confluence of the bypass circuit, and the main circulation circuit is controlled according to the temperature of the cooling water. In a thermostat valve having a main opening / closing valve that opens / closes a circulation circuit and a bypass opening / closing valve that operates in conjunction with the main opening / closing valve to close the bypass circuit when the main opening / closing valve opens the main circulation circuit, a main opening / closing valve Is configured to close the main circulation circuit, the bypass opening / closing valve closes the bypass circuit with a constant urging force, and opens when a pressure difference of a certain level or more occurs, so even when the main opening / closing valve is closed. Since the bypass opening / closing valve is closed with a constant biasing force, the cooling water flows sufficiently in the heater circuit, the effect of the heater can be accelerated, and the bypass opening / closing valve is closed. If the pressure on the outlet side that continues continues to drop to a certain extent or more, the pressure difference with the bypass circuit opens the bypass opening / closing valve against the constant biasing force and the cooling water flows from the bypass circuit. Cavitation can be surely prevented, and the main opening / closing valve can be prevented from being forcibly opened.
【図１】本発明の一実施形態のエンジンの冷却装置の概
略構成図である。FIG. 1 is a schematic configuration diagram of an engine cooling device according to an embodiment of the present invention.
【図２】同実施形態のサーモスタット弁の構成を示し、
（ａ）は主開閉弁を閉じた状態の縦断面図、（ｂ）は主
開閉弁を開いた状態の縦断面図ある。FIG. 2 shows the configuration of the thermostat valve of the same embodiment,
(A) is a longitudinal sectional view with the main opening / closing valve closed, and (b) is a longitudinal sectional view with the main opening / closing valve opened.
【図３】従来例の従来例のエンジンの冷却装置の概略構
成図である。FIG. 3 is a schematic configuration diagram of a conventional engine cooling device of a conventional example.
【図４】従来例のサーモスタット弁の構成を示す縦断面
図である。FIG. 4 is a vertical cross-sectional view showing the structure of a conventional thermostat valve.
【図５】他の従来例のエンジンの冷却装置の概略構成図
である。FIG. 5 is a schematic configuration diagram of another conventional engine cooling device.
【符号の説明】 ３ 主循環回路 ４ サーモスタット弁 ６ ヒータ回路 ７ バイパス回路 ８ 主開閉弁 ９ バイパス開閉弁[Explanation of symbols] 3 main circulation circuit 4 thermostat valve 6 heater circuit 7 bypass circuit 8 main opening / closing valve 9 bypass opening / closing valve
Claims (1)
スするヒータ回路とバイパス回路の合流部に配置され、
冷却水温度に応じて主循環回路を開閉する主開閉弁と、
主開閉弁が主循環回路を開いたときにバイパス回路を閉
じるように主開閉弁と連動して作動するバイパス開閉弁
とを有するサーモスタット弁において、主開閉弁が主循
環回路を閉じている状態で、バイパス開閉弁が所定付勢
力でバイパス回路を閉じ、所定以上の差圧が生じたとき
に開くように構成したことを特徴とするサーモスタット
弁。1. A main circulation circuit and a heater circuit that bypasses a part of the main circulation circuit, and the bypass circuit are arranged at a confluence portion of the bypass circuit.
A main on-off valve that opens and closes the main circulation circuit according to the cooling water temperature,
A thermostat valve having a main opening / closing valve and a bypass opening / closing valve that operates in conjunction with the main opening / closing valve to close the bypass circuit when the main opening / closing valve opens, in a state where the main opening / closing valve closes the main circulation circuit. A thermostat valve characterized in that the bypass opening / closing valve closes the bypass circuit with a predetermined biasing force and opens when a pressure difference of a predetermined value or more occurs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24914695A JPH0988598A (en) | 1995-09-27 | 1995-09-27 | Thermostat valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24914695A JPH0988598A (en) | 1995-09-27 | 1995-09-27 | Thermostat valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0988598A true JPH0988598A (en) | 1997-03-31 |
Family
ID=17188606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24914695A Pending JPH0988598A (en) | 1995-09-27 | 1995-09-27 | Thermostat valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0988598A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007291927A (en) * | 2006-04-24 | 2007-11-08 | Mazda Motor Corp | Engine cooling system |
| JP2007291928A (en) * | 2006-04-24 | 2007-11-08 | Mazda Motor Corp | Engine cooling system |
| JP2011074761A (en) * | 2009-09-29 | 2011-04-14 | Daihatsu Motor Co Ltd | Thermostat |
| WO2013114676A1 (en) | 2012-01-31 | 2013-08-08 | 日本サーモスタット株式会社 | Thermostat device |
| WO2013175809A1 (en) * | 2012-05-22 | 2013-11-28 | 日本サーモスタット株式会社 | Thermostat device |
-
1995
- 1995-09-27 JP JP24914695A patent/JPH0988598A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007291927A (en) * | 2006-04-24 | 2007-11-08 | Mazda Motor Corp | Engine cooling system |
| JP2007291928A (en) * | 2006-04-24 | 2007-11-08 | Mazda Motor Corp | Engine cooling system |
| JP2011074761A (en) * | 2009-09-29 | 2011-04-14 | Daihatsu Motor Co Ltd | Thermostat |
| WO2013114676A1 (en) | 2012-01-31 | 2013-08-08 | 日本サーモスタット株式会社 | Thermostat device |
| JP2013155724A (en) * | 2012-01-31 | 2013-08-15 | Nippon Thermostat Co Ltd | Thermostat device |
| WO2013175809A1 (en) * | 2012-05-22 | 2013-11-28 | 日本サーモスタット株式会社 | Thermostat device |
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