JPH04136581A - Valve - Google Patents

Valve

Info

Publication number
JPH04136581A
JPH04136581A JP26018690A JP26018690A JPH04136581A JP H04136581 A JPH04136581 A JP H04136581A JP 26018690 A JP26018690 A JP 26018690A JP 26018690 A JP26018690 A JP 26018690A JP H04136581 A JPH04136581 A JP H04136581A
Authority
JP
Japan
Prior art keywords
valve
bimetal
exhaust gas
opening
closing
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
Application number
JP26018690A
Other languages
Japanese (ja)
Inventor
Ryoji Hase
良二 長谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP26018690A priority Critical patent/JPH04136581A/en
Publication of JPH04136581A publication Critical patent/JPH04136581A/en
Pending legal-status Critical Current

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  • Exhaust-Gas Circulating Devices (AREA)
  • Temperature-Responsive Valves (AREA)

Abstract

PURPOSE:To obtain an exhaust gas re-circulating valve capable of temperature setting to open and close the valve and automatic valve opening and closing by providing a titled valve with a mechanism capable of freely adjusting a working point where a bimetal and movable piece locks at and the opening and closing distances of the movable piece by means of the bimetal. CONSTITUTION:When the temperature of exhaust gas 11 is raised, a bimetal 17 curves, and the working point of the bimetal 17 contacts with a spring receiving seat. When the temperature is further raised, and the bimetal 17 displaces, and a spool 20 works facing to the left, and a valve seat face 19 opens, a part of the exhaust gas 11 is re-circulated. At this moment, the temperature setting for valve opening and closing while matching the valve opening and closing position to the displacement position at a certain temperature of the bimetal can be controlled by moving the spring receiving seat 12 and adjusting the working point, where the bimetal is engaged at. In addition, the opening and closing stroke of a spool valve can freely be set by moving a nut 16 back and forth. This constitution makes it possible to set the temperature to open and close the valve and facilitates the adjustment of the opening and closing stroke of a movable valve.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、例えば低窒素酸化物燃焼法の一方法である
排気ガス再循環法に使用されるバルブの構造に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the structure of a valve used, for example, in an exhaust gas recirculation method, which is a method of low nitrogen oxide combustion method.

〔従来の技術〕[Conventional technology]

第4図及び第5図は従来の排ガス再循環用バルブを示す
断面図である。
4 and 5 are cross-sectional views showing conventional exhaust gas recirculation valves.

図において、22は排ガス出口5に取り付けられたバル
ブケーシング、23はバルブケーシング22に回転支持
される支工軸、24は支工軸23にはめ合い締結された
回転弁、5は排ガスの一部を送気するためのダクト、1
1は排ガスである。
In the figure, 22 is a valve casing attached to the exhaust gas outlet 5, 23 is a support shaft rotatably supported by the valve casing 22, 24 is a rotary valve fitted and fastened to the support shaft 23, and 5 is a part of the exhaust gas. duct for supplying air, 1
1 is exhaust gas.

次に動作について説明する。第4図は排ガスの再循環を
かけない状態を示し、ここでは、バルブケーシング22
に設けた円筒状の出口の一端に支工軸23を取りつけ、
その支工軸23に取りつけられた回転弁24を閉じるこ
とで排ガスIIの送気経路が閉じられる。一方、第5図
は排ガス再循環をかけた状態を示す、即ち、支工軸23
の一端に取り付けた握り(図示せず)を手動で回転させ
ることにより回転弁24の開度を調整し、排ガス11の
一部をダクト8を介してブロワ−2(第1図参照)へ送
気するのである。
Next, the operation will be explained. FIG. 4 shows a state in which exhaust gas is not recirculated, and here, the valve casing 22
Attach the support shaft 23 to one end of the cylindrical outlet provided in the
By closing the rotary valve 24 attached to the support shaft 23, the air supply path for the exhaust gas II is closed. On the other hand, FIG. 5 shows a state in which exhaust gas recirculation is applied, that is, the support shaft 23
By manually rotating a handle (not shown) attached to one end, the opening degree of the rotary valve 24 is adjusted, and a portion of the exhaust gas 11 is sent to the blower 2 (see Fig. 1) via the duct 8. I care.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

従来の排ガス再循環用のバルブは以上のように構成され
ているので、弁の開閉を手動で行わなければならず、開
閉時期のコントロール、開度の設定に問題があった。
Conventional exhaust gas recirculation valves are constructed as described above, so the valves must be opened and closed manually, which poses problems in controlling the opening/closing timing and setting the opening degree.

この発明は上記のような問題点を解消するため、になさ
れたもので、開閉時期の温度設定ができるとともに、弁
の開閉を自動でできる排ガス再循環用のバルブを得るこ
とを目的とする。
This invention was made to solve the above-mentioned problems, and an object of the present invention is to provide a valve for exhaust gas recirculation that can set the temperature for opening and closing timing and can automatically open and close the valve.

〔課題を解決するための手段〕[Means to solve the problem]

この発明に係るバルブは、バルブ室内の温度変化に感応
して湾曲するバイメタルと、この湾曲するバイメタルに
係合して弁の開閉作用を行う可動子を備え、可動子とバ
イメタルとの係合する作用点の調整を、例えば可動子の
一端にねじ締結されたバネ受座を設けてこのバネ受座を
ねじ調整することにより行い、更に、可動子の弁開閉動
作距離を、例えば可動子の一端にねじ締結されたナツト
とスプリングにより調整できるようにしたものである。
The valve according to the present invention includes a bimetal that curves in response to temperature changes in the valve chamber, and a movable element that engages with the curved bimetal to open and close the valve. The point of action is adjusted by, for example, providing a spring seat screwed to one end of the mover and adjusting the spring seat with a screw, and further adjusting the valve opening/closing operation distance of the mover, for example, by providing a spring seat screwed to one end of the mover. Adjustment is possible using a nut and spring that are screwed together.

〔作用〕[Effect]

この発明におけるバルブは、温度変化に伴って湾曲する
バイメタルを利用し、可動子とバイメタルとの係合する
作用点を調整することによって、弁の開始位置をバイメ
タルのある温度における変位量に合わせ、弁の開閉時期
を温度設定できるようにする。また、弁の開閉ストロー
クを任意に設定できるようにしたものである。
The valve of this invention utilizes a bimetal that curves with temperature changes, and adjusts the starting position of the valve to the amount of displacement at a certain temperature of the bimetal by adjusting the point of action where the mover and the bimetal engage. Enables temperature setting of valve opening/closing timing. Furthermore, the opening and closing stroke of the valve can be set arbitrarily.

〔実施例〕〔Example〕

以下、この発明の一実施例を図について説明する。 An embodiment of the present invention will be described below with reference to the drawings.

第1図は本実施例による排ガス再循環用のバルブを使用
した燃焼システムを示すシステム図であり、1は燃焼器
本体、2は燃焼器本体1へ空気を供給するブロワ−13
は燃焼器本体1へ燃料を供給する燃料ノズル、4は空気
取入口、5は排ガス出口、6は排ガス出口5にはめ込ま
れる排ガス再循環用バルブ、7はブロワ−2から燃焼器
本体1の空気取入口4へ空気を供給するため接続された
ダクト、8は排ガスをブロワ−2へ供給するためのダク
ト、9はブロワ−2に取り付けられた排ガス取入口、1
0はブロワ−2に取り込まれる新鮮空気、11は排ガス
である。
FIG. 1 is a system diagram showing a combustion system using a valve for exhaust gas recirculation according to this embodiment, where 1 is a combustor main body, and 2 is a blower 13 that supplies air to the combustor main body 1.
1 is a fuel nozzle that supplies fuel to the combustor body 1, 4 is an air intake port, 5 is an exhaust gas outlet, 6 is a valve for exhaust gas recirculation that is fitted into the exhaust gas outlet 5, and 7 is a flow of air from the blower 2 to the combustor body 1. A duct connected to supply air to the intake port 4, 8 a duct for supplying exhaust gas to the blower 2, 9 an exhaust gas intake port attached to the blower 2, 1
0 is fresh air taken into the blower 2, and 11 is exhaust gas.

第2図及び第3図において、20はスプール、13はこ
のスプール20を保持する軸受、14はスプール弁を常
にバルブシート面19に押えつけるためのスプリング、
15はスプール20の開閉ストロークを規制するキャッ
プ、16はスプール20の一端に設けたネジ部に取り付
けられたナツト、17はスプール20を開閉するための
バイメタル、18はバルブケーシングである。 12は
スプール20にねじ締結されたバネ受座、21はバルブ
ケーシング18内にリブで取り付けられた軸受ボスであ
る。
In FIGS. 2 and 3, 20 is a spool, 13 is a bearing that holds this spool 20, 14 is a spring that always presses the spool valve against the valve seat surface 19,
15 is a cap that regulates the opening and closing stroke of the spool 20, 16 is a nut attached to a threaded portion provided at one end of the spool 20, 17 is a bimetal for opening and closing the spool 20, and 18 is a valve casing. 12 is a spring seat screwed to the spool 20, and 21 is a bearing boss attached to the inside of the valve casing 18 with a rib.

次に動作について説明する。第1図において概略を説明
すると、本実施例に係る排ガス再循環用バルブ6により
、排ガスllの一部はブロワ−2によって新鮮空気に混
入され、燃焼用空気として再度燃焼器本体1に供給され
るのである。第2図及び第3図はそれぞれ燃焼前及び燃
焼状態にある排ガス再循環バルブの内部断面図を示す。
Next, the operation will be explained. To explain the outline in FIG. 1, a part of the exhaust gas 11 is mixed into fresh air by the blower 2 by the exhaust gas recirculation valve 6 according to the present embodiment, and is again supplied to the combustor main body 1 as combustion air. It is. Figures 2 and 3 show internal cross-sectional views of the exhaust gas recirculation valve in pre-combustion and combustion conditions, respectively.

まず、第2図中、可動なスプール20にねじ締結された
ナツト16、このナツト16に保持されスプリン14を
内蔵したキャップ15構造において、ナツト16をねじ
込んでいくと、スプリング14の反力は固定側の軸受ボ
ス21の端面と可動なキャップ14により受圧され、キ
ャップ14が取り付けであるスプール20が動き、バル
ブシート面19に当たって流路が閉まる。それ故に排ガ
ス1は再循環しない。
First, in FIG. 2, a nut 16 is screwed to a movable spool 20, and a cap 15 is held by this nut 16 and has a built-in spring 14. As the nut 16 is screwed in, the reaction force of the spring 14 is fixed. Pressure is received by the end face of the side bearing boss 21 and the movable cap 14, and the spool 20 to which the cap 14 is attached moves, hitting the valve seat surface 19 and closing the flow path. The exhaust gas 1 is therefore not recirculated.

一方、第3図において、排ガス11の温度が上昇し、バ
イメタル17が湾曲して8寸法だけ変位してくると、ス
プール20にねじ締結されたバネ受座12にバイメタル
17の作用点が接触する。さらに温度が上昇すると、バ
イメタル17が変位し、スプリング14の反力より大き
な力を得て、スプール20がb寸法図示左向きに動作し
、バルブシート面19が開いて、排ガス11の一部を再
循環させる。
On the other hand, in FIG. 3, when the temperature of the exhaust gas 11 rises and the bimetal 17 curves and is displaced by 8 dimensions, the point of action of the bimetal 17 comes into contact with the spring seat 12 screwed to the spool 20. . When the temperature further rises, the bimetal 17 is displaced and a force greater than the reaction force of the spring 14 is obtained, causing the spool 20 to move toward the left in dimension b, opening the valve seat surface 19 to recycle a portion of the exhaust gas 11. Circulate.

ここで本実施例においては、スプール20にねじ締結さ
れたバネ受MI2を移動させて図示8寸法を変化させ、
バイメタルの係合する作用点を調整することによって、
弁の開始位置をバイメタルのある温度における変位量に
合わせ、弁の開閉時期を温度設定制御可能にすることが
できる。
Here, in this embodiment, the illustrated 8 dimensions are changed by moving the spring receiver MI2 screwed to the spool 20,
By adjusting the point of action where the bimetal engages,
By adjusting the starting position of the valve to the amount of displacement of the bimetal at a certain temperature, the opening and closing timing of the valve can be controlled by temperature setting.

更に、スプール20の他端のネジ部に取り付けられたナ
ツト16を前後に移動させることにより、スプール弁の
開閉ストロークを任意に設定できるようになる。
Furthermore, by moving the nut 16 attached to the threaded portion at the other end of the spool 20 back and forth, the opening/closing stroke of the spool valve can be arbitrarily set.

〔発明の効果〕〔Effect of the invention〕

以上のように、この発明によればバイメタルを片持ち式
に構成し、可動子弁(スプール弁)の8寸法および5寸
法の調整により、弁の開閉時期を温度設定でき、かつ可
動子弁(スプール弁)の開閉ストローク調整が容易にで
き、延では精度の高いバルブが得られる効果がある。
As described above, according to the present invention, the bimetal is configured in a cantilevered manner, and by adjusting the 8 dimensions and 5 dimensions of the movable valve (spool valve), the opening/closing timing of the valve can be set at temperature. The opening/closing stroke of the spool valve (spool valve) can be easily adjusted, and the valve has the effect of providing a highly accurate valve.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの発明の一実施例による排ガス再循環用バル
ブを使用した燃焼システムを示す全体構成図、第2図及
び第3図はこの発明の一実施例による排ガス再循環用バ
ルブを示す断面図、第4図及び第5図は従来の排ガス再
循環用バルブを示す断面図である。 図中、1は燃焼器本体、2はブロワ−13は燃料ノズル
、4は空気取入口、5は排ガス出口、6は排ガス再循環
バルブ、7.8はダクト、9は排ガス取入口、lOは新
鮮空気、11は排ガス、!2はバネ受座、13は軸受、
14はスプリング、15はキャップ、16はナツト、1
7はバイメタル、18はバルブケーシング、19はバル
ブシート面、20はスプール、21は軸受ボス、22は
バルブケーシング、23は支工軸、24は回転弁である
。 なお、図中同一符号は同−又は相当部分を示す。
FIG. 1 is an overall configuration diagram showing a combustion system using an exhaust gas recirculation valve according to an embodiment of the present invention, and FIGS. 2 and 3 are cross-sectional views showing an exhaust gas recirculation valve according to an embodiment of the present invention. 4 and 5 are cross-sectional views showing conventional exhaust gas recirculation valves. In the figure, 1 is the combustor main body, 2 is the blower, 13 is the fuel nozzle, 4 is the air intake port, 5 is the exhaust gas outlet, 6 is the exhaust gas recirculation valve, 7.8 is the duct, 9 is the exhaust gas intake port, and lO is Fresh air, 11 is exhaust gas! 2 is a spring seat, 13 is a bearing,
14 is a spring, 15 is a cap, 16 is a nut, 1
7 is a bimetal, 18 is a valve casing, 19 is a valve seat surface, 20 is a spool, 21 is a bearing boss, 22 is a valve casing, 23 is a support shaft, and 24 is a rotary valve. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

【特許請求の範囲】 バルブ室内の温度変化に感応して湾曲するバイメタルと
、この湾曲するバイメタルに係合して弁の開閉作用を行
う可動子を有し、 前記バイメタルと前記可動子との係合する作用点を任意
に調整できる機構と、 前記可動子を弾性的に支持しかつその開閉動作距離を任
意に調整できる機構を備えたバルブ。
[Scope of Claims] A bimetal that curves in response to changes in temperature within a valve chamber, and a movable element that engages with the curved bimetal to open and close the valve, the engagement between the bimetal and the movable element being A valve comprising: a mechanism that can arbitrarily adjust a point of action that meets the movable element; and a mechanism that elastically supports the movable element and can arbitrarily adjust its opening/closing operation distance.
JP26018690A 1990-09-27 1990-09-27 Valve Pending JPH04136581A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26018690A JPH04136581A (en) 1990-09-27 1990-09-27 Valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26018690A JPH04136581A (en) 1990-09-27 1990-09-27 Valve

Publications (1)

Publication Number Publication Date
JPH04136581A true JPH04136581A (en) 1992-05-11

Family

ID=17344528

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26018690A Pending JPH04136581A (en) 1990-09-27 1990-09-27 Valve

Country Status (1)

Country Link
JP (1) JPH04136581A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1544450A2 (en) * 2003-12-20 2005-06-22 DEUTZ Aktiengesellschaft Exhaust gas recirculation control having mechanical temperature control

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1544450A2 (en) * 2003-12-20 2005-06-22 DEUTZ Aktiengesellschaft Exhaust gas recirculation control having mechanical temperature control
EP1544450A3 (en) * 2003-12-20 2007-08-22 DEUTZ Aktiengesellschaft Exhaust gas recirculation control having mechanical temperature control

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