JP2005023952A - Proportional control valve with closing function - Google Patents

Proportional control valve with closing function Download PDF

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Publication number
JP2005023952A
JP2005023952A JP2003187121A JP2003187121A JP2005023952A JP 2005023952 A JP2005023952 A JP 2005023952A JP 2003187121 A JP2003187121 A JP 2003187121A JP 2003187121 A JP2003187121 A JP 2003187121A JP 2005023952 A JP2005023952 A JP 2005023952A
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Prior art keywords
valve
proportional control
valve body
control valve
gas
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JP2003187121A
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JP4187598B2 (en
Inventor
Kazuo Ichiyanagi
和男 一柳
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Rinnai Corp
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Rinnai Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To solve problems that the spring constant of a pressure regulating spring must be changed to a predetermined value because attraction forces to be applied to a valve element and a diaphragm must be changed accordingly when the kind of gas to be used is changed in a proportional control valve with closing function which has the diaphragm and uses the pressure regulating valve, and the proportional control valve must be disassembled once with troublesome works to change the pressure regulating spring. <P>SOLUTION: A drive means 6 to open a proportional control valve 1 has a drive source 63 with an output shaft 63a thereof being reciprocal. When a solenoid 62 is connected to the output shaft of the drive source, and a valve body 2 is moved in the valve-opening direction by driving the drive source, a coil 62b of the solenoid is energized to attract a movable core 62c in the valve-opening direction so that the pressure of the output shaft is transmitted to a valve element via the movable core. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、給湯器等のガス器具に設けたガスバーナへの燃料ガスの供給を制御する閉止機能付比例制御弁に関する。
【０００２】
【従来の技術】
この種の比例制御弁では、例えばガスバーナへの燃料ガスの供給管路を低コストで製作するために閉止機能を付与することが知られている。この場合、閉止機能付比例制御弁は、内部にガス通路を有し、このガス通路を介して相互に連通するガス流入部とガス流出部とを開設した弁本体を有する。ガス通路には弁座が形成され、この弁座に着座するように弁体がガス通路に挿入される。弁座と対向する弁体の一端には、ガスバーナの燃焼に必要な燃料ガスの一次圧が変動しても比例制御弁を介してガスバーナに供給される燃料ガスの二次圧が変動しないようにダイヤフラムが設けられ、閉弁方向に流体圧力が作用するようになっている。
【０００３】
また、ダイヤフラム中央部の受動板と、弁体を開弁方向に移動させるモータの回転軸との間には調圧ばねが縮設され、閉弁位置において弁体が弁座に対して押圧されて十分な閉止機能が付与されるように閉止用ばねが設けられている。この場合、調圧ばねの作動領域で、閉止用ばねの付勢力が弁体に作用しないように閉止用ばね解除機構を設け、調圧ばねとしてばね定数の小さいものを使用してガバナ特性を安定させている。そして、モータを駆動して出力軸から調圧ばねを介して弁体を押圧して開弁させ、モータの回転角を制御して弁体と弁座との間の開度を変更し、その開度に応じてガス流量が比例制御される（特許文献１）。
【０００４】
【特許文献１】
特公平３−７６４８７号公報（例えば、特許請求の範囲の記載）
【０００５】
【発明が解決しようとする課題】
しかしながら、上記のものでは、調圧ばねを使用するので、使用するガス種を変更する場合、それに応じて弁体及びダイヤフラムに作用する付勢力を変更するため、調圧ばねを所定のばね定数のものに変更する必要がある。この場合、調圧ばねを変更するには、比例制御弁を一旦分解する必要があり、その作業が面倒である。また、上記のものでは、調圧ばねの作動領域で、閉止用ばねの付勢力が弁体に作用しないようにしているため、例えば、比例制御弁の作動中に、停電等によりモータの駆動が停止された場合、比例制御弁が開弁状態に保持される恐れがある。
【０００６】
そこで、本発明は、上記点に鑑み、使用するガス種を変更する場合でも、簡単な作業で弁体及びダイヤフラムに作用する付勢力が調節でき、その上、停電時に確実に閉弁されるようにした閉止機能付比例制御弁を提供することを課題とするものである。
【０００７】
【課題を解決するための手段】
この課題を解決するため、本発明の閉止機能付比例制御弁は、内部にガス通路を有し、このガス通路を介して相互に連通するガス流入部とガス流出部とを開設すると共にガス通路内に弁座を形成した弁本体を備え、この弁座に着座する弁体をガス通路に配設し、この弁体の閉弁方向に作用して閉止機能を付与するばねと、ガス通路内の流体圧力が閉弁方向に作用するようにダイヤフラムとを設け、このばねの付勢力に抗して弁体を押圧して開弁方向に移動させる駆動手段を設けた閉止機能付比例制御弁において、前記駆動手段は、出力軸が往復動自在な駆動源を有し、この駆動源の出力軸にソレノイドを連結し、駆動源を駆動して開弁方向に弁本体を移動させる場合、ソレノイドのコイルに通電して可動鉄芯を開弁方向に付勢させ、出力軸の押圧力が可動鉄心を介して弁体に伝達されるようにしたことを特徴とする。
【０００８】
本発明によれば、閉弁状態では、閉止用ばねの付勢力を受けて弁体が弁座に着座してガス通路が閉鎖され、例えばガスバーナを点火するため比例制御弁を開弁する場合、ソレノイドのコイルに通電して可動鉄心を開弁方向に付勢させる。そして、駆動源を駆動して出力軸を開弁方向に移動させると、ソレノイドが開弁方向に移動され、出力軸の押圧力が可動鉄心を介して弁体に伝達される。これにより、弁体が閉止用ばねの付勢力に抗して弁座から離脱して開弁する。そして、モータの回転角を制御して弁体と弁座との間の開度を変更し、その開度に応じてガス流量が比例制御される。比例制御弁の作動状態で、例えば停電が発生して駆動源の作動が停止した場合、同時にソレノイドのコイルへの通電も停止されるため、可動鉄心の開弁方向への吸引付勢力がなくなり、閉止用ばねの付勢力を受けて弁体が弁座に着座して閉弁される。また、ガス種を変更する場合には、それに応じてソレノイドのコイルへの電流を変化させるだけで弁体及びダイヤフラムに作用する可動鉄心の吸引付勢力が調節できるため、その作業は簡単である。
【０００９】
この場合、前記コイルへの通電電流の変更を可能とする変更手段を設けておくのがよい。
【００１０】
また、前記駆動源をステッピングモータとするのがよい。
【００１１】
【発明の実施の形態】
図１及び図２を参照して、１は、例えばガスバーナ（図示せず）への燃料ガスの供給を制御する本発明の閉止機能付比例制御弁である。この比例制御弁１は、中空円筒形状の弁本体１０を有し、この弁本体１０の外周面には、ガス流入部１１とガス流出部１２とが開設されている。この弁本体１０の内周面には、内側に向かって延出させた環状の延出部が形成され、この延出部が弁座１３を構成する。この弁座１３に着座するように上下方向に延びる弁体２が挿入されている。この弁体２の下端部には、弁本体１０の下面開口を密閉して燃料ガスの圧力が閉弁方向（図１の下方）に作用するようにダイヤフラム３が装着されている。弁本体１０の上面開口には蓋材４が装着されている。弁体２を閉弁方向に付勢して閉止機能を付与する閉止用ばね５が蓋材４と弁体２との間に縮設されている。
【００１２】
弁体２から弁座１３から離脱した開弁状態になると、燃料ガスは、ガス流入口１１から弁座１３とダイヤフラム３で区画された一次圧室１４に導入され、弁体２と弁座１３との間を通過して、弁座１３と蓋材４とで区画された二次圧室１５に至り、ガス流出部１２を経てガスバーナに供給され、ガス流入口１１からガス流出口１２に通じる一次圧室１４及び二次圧室１５がガス通路を形成する。この場合、一次圧室１５内の一次圧が大きくなるとダイアフラム３が閉弁方向に移動し、他方で、一次圧室１５の一次圧が小さくなるとダイアフラム３が開弁方向に移動する。このガバナ特性で一次圧の変動があっても二次圧が一定に制御できる。
【００１３】
弁本体１０の下側には、弁体２を上方に向かって押圧して開弁させ（図２参照）、この弁体２と弁座１３との間の開度を調節してその開度に応じて燃料ガスのガス流量を比例制御するため駆動手段６が設けられている。ここで、ガバナ特性を安定させるには、使用するガス種（例えばＬＰガスまたは天然ガス）に応じて弁体２及びダイヤフラム３に作用する付勢力を設定する必要がある。また、電動式のモータを使用する場合には、停電時に確実に閉弁されるようにする必要がある、
【００１４】
本実施の形態では、弁本体１０の下側にケース６１を装着し、このケース６１の内側に弁体２を開弁方向に付勢するソレノイド６２を配置すると共にケース６１に下面に駆動源であるステッピングモータ６３を設け、このソレノイド６２のハウジング６２ａに、上下方向に往復動自在なステッピングモータ６３の出力軸６３ａを連結して駆動手段６を構成した。この場合、ソレノイド６２は公知の構造を有し、弁体２と、ソレノイド６２の可動鉄心６２ｂ及びステッピングモータの出力軸６３ａとを同一軸線上に配置している。そして、ステッピングモータ６３を駆動して開弁方向に弁本体２を移動させる場合、ソレノイド６２のコイル６２ｃに通電してソレノイド６２の可動鉄心６２ｂを開弁方向に付勢させ、出力軸６３ａの押圧力が可動鉄心６２ｂを介して弁体２に伝達されるようにした。
【００１５】
図３を参照して、ソレノイド６２のコイル６２ｃに通電すると、起磁力によって図３の左側（図１の上側）に吸引付勢力が働き、負荷がない状態では可動鉄心６２ｂがａ点を経てｂ点まで移動する。この場合、可動鉄心６２ｂの位置と吸引付勢力との関係は、線Ｍに示すように、可動鉄心６２ｂの位置がｂ点からａ点に近づくに従い、吸引付勢力は増大しａ点でピークになる。このことは、例えばコイル６２ｃへの電流値を減少させた場合も、線Ｓで示すように同様であるが、吸引付勢力は全体に低下する。そして、コイル６２ｃに通電してソレノイド６２の可動鉄心６２ｂに付勢力を与え、可動鉄心６２ｂが弁体２を押圧すると、可動鉄心６２ｂに、閉止用ばね５の付勢力及び一次圧がダイヤフラム３を押す力による負荷がかかって下方に戻され、この負荷と吸引付勢力とが釣り合うように機能してダイヤフラム３を利用したガバナ機能が実現される。
【００１６】
これにより、ソレノイド６２のコイル６２ｃへの通電電流を変更して吸引付勢力を調節するだけで弁体２に作用する可動鉄心６２ｂの付勢力が調節できるため、ガス種を変更する場合でも簡単な作業で弁体２及びダイヤフラム３に作用する付勢力を調節でき、ガバナ特性を変更させることができる。また、停電等の異常が発生した場合、コイル６２ｃへの通電が停止され、可動鉄心６２ｂの吸引が解除されて付勢力がなくなるため、閉止用ばね５の付勢力で弁体２が弁座方向に押圧されて閉弁し、比例制御弁１が確実に閉弁される。
【００１７】
【発明の効果】
以上に説明したように本発明の閉止機能付比例制御弁では、使用するガス種を変更する場合でも、簡単な作業で弁体及びダイヤフラムに作用する付勢力が調節でき、その上、停電時に確実に閉弁されるという効果を奏する。
【図面の簡単な説明】
【図１】本発明の閉止機能付比例制御弁を閉弁位置で示す断面図
【図２】本発明の閉止機能付比例制御弁を開弁位置で示す断面図
【図３】可動鉄心の位置と吸引付勢力との関係を説明する図
【符号の説明】
１ 閉止機能付比例制御弁
１３ 弁座
２ 弁体
５ 閉止用ばね
６ 駆動手段
６２ ソレノイド
６２ｂ コイル
６２ｃ 可動鉄心[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a proportional control valve with a closing function for controlling the supply of fuel gas to a gas burner provided in a gas appliance such as a water heater.
[0002]
[Prior art]
In this type of proportional control valve, for example, it is known to provide a closing function in order to manufacture a fuel gas supply line to a gas burner at low cost. In this case, the proportional control valve with a closing function includes a valve main body having a gas passage therein, and a gas inflow portion and a gas outflow portion communicating with each other via the gas passage. A valve seat is formed in the gas passage, and a valve body is inserted into the gas passage so as to be seated on the valve seat. At one end of the valve body facing the valve seat, the secondary pressure of the fuel gas supplied to the gas burner via the proportional control valve does not fluctuate even if the primary pressure of the fuel gas necessary for combustion of the gas burner fluctuates. A diaphragm is provided so that fluid pressure acts in the valve closing direction.
[0003]
In addition, a pressure regulating spring is contracted between the passive plate at the center of the diaphragm and the rotating shaft of the motor that moves the valve body in the valve opening direction, and the valve body is pressed against the valve seat in the valve closing position. Therefore, a closing spring is provided so as to provide a sufficient closing function. In this case, a closing spring release mechanism is provided so that the biasing force of the closing spring does not act on the valve body in the operating region of the pressure adjusting spring, and the governor characteristics are stabilized by using a pressure adjusting spring with a small spring constant. I am letting. Then, the motor is driven and the valve body is pressed from the output shaft via the pressure regulating spring to open the valve, the rotation angle of the motor is controlled to change the opening between the valve body and the valve seat, The gas flow rate is proportionally controlled according to the opening (Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent Publication No. 3-76487 (for example, description of claims)
[0005]
[Problems to be solved by the invention]
However, in the above, since the pressure adjusting spring is used, when the gas type to be used is changed, the biasing force acting on the valve body and the diaphragm is changed accordingly, so that the pressure adjusting spring has a predetermined spring constant. It is necessary to change to a thing. In this case, in order to change the pressure regulating spring, it is necessary to once disassemble the proportional control valve, which is troublesome. Further, in the above, since the biasing force of the closing spring does not act on the valve body in the operating region of the pressure regulating spring, for example, the motor is driven by a power failure or the like during the operation of the proportional control valve. If stopped, the proportional control valve may be held open.
[0006]
Therefore, in view of the above points, the present invention can adjust the urging force acting on the valve body and the diaphragm with a simple operation even when the gas type to be used is changed. An object of the present invention is to provide a proportional control valve with a closing function.
[0007]
[Means for Solving the Problems]
In order to solve this problem, the proportional control valve with a closing function according to the present invention has a gas passage inside, and opens a gas inflow portion and a gas outflow portion that communicate with each other through the gas passage, and the gas passage. A valve body having a valve seat formed therein, a valve body seated on the valve seat disposed in the gas passage, a spring for acting in a valve closing direction of the valve body to provide a closing function, and a gas passage In a proportional control valve with a closing function, a diaphragm is provided so that the fluid pressure acts on the valve closing direction, and a driving means is provided to move the valve body in the valve opening direction against the biasing force of the spring. The drive means has a drive source whose output shaft is reciprocally movable. When the solenoid is connected to the output shaft of the drive source and the valve body is moved in the valve opening direction by driving the drive source, Energize the coil to urge the movable iron core in the valve opening direction. Characterized in that the pressure has to be transmitted to the valve body via the movable iron core.
[0008]
According to the present invention, when the valve is closed, the valve body is seated on the valve seat under the biasing force of the closing spring and the gas passage is closed.For example, when the proportional control valve is opened to ignite the gas burner, The solenoid coil is energized to urge the movable iron core in the valve opening direction. When the drive source is driven and the output shaft is moved in the valve opening direction, the solenoid is moved in the valve opening direction, and the pressing force of the output shaft is transmitted to the valve body via the movable iron core. As a result, the valve body separates from the valve seat and opens against the urging force of the closing spring. Then, the rotation angle of the motor is controlled to change the opening between the valve body and the valve seat, and the gas flow rate is proportionally controlled according to the opening. When the operation of the proportional control valve is stopped, for example, when a power failure occurs and the operation of the drive source stops, the energization to the solenoid coil is also stopped at the same time, so there is no suction biasing force in the opening direction of the movable core, The valve element is seated on the valve seat under the urging force of the closing spring and is closed. Further, when changing the gas type, the suction biasing force of the movable iron core acting on the valve element and the diaphragm can be adjusted only by changing the current to the coil of the solenoid accordingly, so that the operation is simple.
[0009]
In this case, it is preferable to provide a changing means that can change the energization current to the coil.
[0010]
The drive source may be a stepping motor.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2, reference numeral 1 denotes a proportional control valve with a closing function of the present invention for controlling the supply of fuel gas to, for example, a gas burner (not shown). The proportional control valve 1 has a hollow cylindrical valve body 10, and a gas inflow portion 11 and a gas outflow portion 12 are provided on the outer peripheral surface of the valve body 10. An annular extending portion extending inward is formed on the inner peripheral surface of the valve body 10, and the extending portion constitutes the valve seat 13. The valve body 2 extending in the vertical direction is inserted so as to be seated on the valve seat 13. A diaphragm 3 is attached to the lower end of the valve body 2 so that the lower surface opening of the valve body 10 is sealed and the pressure of the fuel gas acts in the valve closing direction (downward in FIG. 1). A lid 4 is attached to the upper surface opening of the valve body 10. A closing spring 5 that urges the valve body 2 in the valve closing direction to provide a closing function is contracted between the lid member 4 and the valve body 2.
[0012]
When the valve body 2 is opened from the valve seat 13, the fuel gas is introduced from the gas inlet 11 into the primary pressure chamber 14 defined by the valve seat 13 and the diaphragm 3, and the valve body 2 and the valve seat 13. Between the gas inlet 11 and the secondary pressure chamber 15 defined by the valve seat 13 and the lid member 4, is supplied to the gas burner through the gas outlet 12, and communicates from the gas inlet 11 to the gas outlet 12. The primary pressure chamber 14 and the secondary pressure chamber 15 form a gas passage. In this case, when the primary pressure in the primary pressure chamber 15 increases, the diaphragm 3 moves in the valve closing direction. On the other hand, when the primary pressure in the primary pressure chamber 15 decreases, the diaphragm 3 moves in the valve opening direction. With this governor characteristic, the secondary pressure can be controlled to be constant even if the primary pressure varies.
[0013]
Below the valve body 10, the valve body 2 is pressed upward to open the valve body (see FIG. 2), and the opening degree between the valve body 2 and the valve seat 13 is adjusted to adjust the opening degree. Accordingly, a drive means 6 is provided for proportionally controlling the gas flow rate of the fuel gas. Here, in order to stabilize the governor characteristics, it is necessary to set the urging force acting on the valve body 2 and the diaphragm 3 according to the type of gas used (for example, LP gas or natural gas). In addition, when using an electric motor, it is necessary to ensure that the valve is closed during a power failure.
[0014]
In the present embodiment, a case 61 is mounted on the lower side of the valve body 10, a solenoid 62 for urging the valve body 2 in the valve opening direction is disposed inside the case 61, and a drive source is provided on the lower surface of the case 61. A stepping motor 63 is provided, and an output shaft 63a of a stepping motor 63 that can reciprocate in the vertical direction is connected to a housing 62a of the solenoid 62 to constitute the driving means 6. In this case, the solenoid 62 has a known structure, and the valve body 2, the movable iron core 62b of the solenoid 62, and the output shaft 63a of the stepping motor are arranged on the same axis. When the stepping motor 63 is driven to move the valve body 2 in the valve opening direction, the coil 62c of the solenoid 62 is energized to urge the movable iron core 62b of the solenoid 62 in the valve opening direction, thereby pushing the output shaft 63a. The pressure was transmitted to the valve body 2 through the movable iron core 62b.
[0015]
Referring to FIG. 3, when the coil 62 c of the solenoid 62 is energized, an attractive biasing force acts on the left side (upper side in FIG. 1) of FIG. 3 due to the magnetomotive force. Move to the point. In this case, as shown by the line M, the relationship between the position of the movable iron core 62b and the suction biasing force increases as the position of the movable iron core 62b approaches the point a from the point b, and reaches a peak at the point a. Become. This is the same as when the current value to the coil 62c is decreased, for example, as indicated by the line S, but the suction biasing force is reduced as a whole. When the coil 62c is energized to apply an urging force to the movable iron core 62b of the solenoid 62 and the movable iron core 62b presses the valve body 2, the urging force and the primary pressure of the closing spring 5 are applied to the movable iron core 62b by the diaphragm 3. A governor function using the diaphragm 3 is realized by applying a load due to the pressing force and returning the load downward and functioning so that the load and the suction biasing force are balanced.
[0016]
As a result, the biasing force of the movable iron core 62b acting on the valve body 2 can be adjusted simply by changing the energization current to the coil 62c of the solenoid 62 and adjusting the suction biasing force. Therefore, even when the gas type is changed, it is simple. The biasing force acting on the valve body 2 and the diaphragm 3 can be adjusted by the work, and the governor characteristics can be changed. Further, when an abnormality such as a power failure occurs, the energization to the coil 62c is stopped, the suction of the movable iron core 62b is released, and the urging force disappears, so the urging force of the closing spring 5 causes the valve body 2 to move in the valve seat direction. To close the proportional control valve 1 with certainty.
[0017]
【The invention's effect】
As described above, the proportional control valve with a closing function according to the present invention can adjust the urging force acting on the valve body and the diaphragm with a simple operation even when the gas type to be used is changed. The effect is that the valve is closed.
[Brief description of the drawings]
FIG. 1 is a sectional view showing a proportional control valve with a closing function of the present invention in a closed position. FIG. 2 is a sectional view showing a proportional control valve with a closing function of the present invention in a opened position. Is a diagram explaining the relationship between suction force and suction force [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Proportional control valve 13 with a closing function Valve seat 2 Valve body 5 Spring for closing 6 Driving means 62 Solenoid 62b Coil 62c Movable iron core

Claims (3)

内部にガス通路を有し、このガス通路を介して相互に連通するガス流入部とガス流出部とを開設すると共にガス通路内に弁座を形成した弁本体を備え、この弁座に着座する弁体をガス通路に配設し、この弁体の閉弁方向に作用して閉止機能を付与するばねと、ガス通路内の流体圧力が閉弁方向に作用するようにダイヤフラムとを設け、このばねの付勢力に抗して弁体を押圧して開弁方向に移動させる駆動手段を設けた閉止機能付比例制御弁において、
前記駆動手段は、出力軸が往復動自在な駆動源を有し、この駆動源の出力軸にソレノイドを連結し、駆動源を駆動して開弁方向に弁本体を移動させる場合、ソレノイドのコイルに通電して可動鉄芯を開弁方向に付勢させ、出力軸の押圧力が可動鉄心を介して弁体に伝達されるようにしたことを特徴とする閉止機能付比例制御弁。There is a gas passage inside, a gas inflow portion and a gas outflow portion that communicate with each other through the gas passage are opened, and a valve body having a valve seat formed in the gas passage is provided, and is seated on the valve seat A valve body is disposed in the gas passage, and a spring is provided that acts in the valve closing direction of the valve body to provide a closing function, and a diaphragm is provided so that fluid pressure in the gas passage acts in the valve closing direction. In a proportional control valve with a closing function provided with a drive means that moves the valve body in the valve opening direction against the urging force of the spring,
The drive means has a drive source whose output shaft is reciprocally movable. When a solenoid is connected to the output shaft of the drive source and the drive body is driven to move the valve body in the valve opening direction, the solenoid coil A proportional control valve with a closing function, wherein the movable iron core is energized to urge the movable iron core in the valve opening direction so that the pressing force of the output shaft is transmitted to the valve element through the movable iron core. 前記コイルへの通電電流の変更を可能とする変更手段を設けたことを特徴とする請求項１記載の閉止機能付比例制御弁。The proportional control valve with a closing function according to claim 1, further comprising a changing unit that makes it possible to change an energization current to the coil. 前記駆動源をステッピングモータとしたことを特徴とする請求項１または請求項２記載の閉止機能付比例制御弁。3. The proportional control valve with a closing function according to claim 1, wherein the driving source is a stepping motor.
JP2003187121A 2003-06-30 2003-06-30 Proportional control valve with closing function Expired - Fee Related JP4187598B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007232252A (en) * 2006-02-28 2007-09-13 Rinnai Corp Gas governor
JP2016056924A (en) * 2014-09-12 2016-04-21 リンナイ株式会社 Motor valve
EP2802781B1 (en) 2012-03-27 2016-11-16 EBM-PAPST Landshut GmbH Modular pressure regulating device and valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007232252A (en) * 2006-02-28 2007-09-13 Rinnai Corp Gas governor
JP4641955B2 (en) * 2006-02-28 2011-03-02 リンナイ株式会社 Gas governor
EP2802781B1 (en) 2012-03-27 2016-11-16 EBM-PAPST Landshut GmbH Modular pressure regulating device and valve
EP2802781B2 (en) † 2012-03-27 2023-08-09 EBM-PAPST Landshut GmbH Modular pressure regulating device and valve
JP2016056924A (en) * 2014-09-12 2016-04-21 リンナイ株式会社 Motor valve

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