JP2002013729A - Gas burner - Google Patents
Gas burnerInfo
- Publication number
- JP2002013729A JP2002013729A JP2000198861A JP2000198861A JP2002013729A JP 2002013729 A JP2002013729 A JP 2002013729A JP 2000198861 A JP2000198861 A JP 2000198861A JP 2000198861 A JP2000198861 A JP 2000198861A JP 2002013729 A JP2002013729 A JP 2002013729A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- valve
- axial direction
- valve body
- case
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/002—Gaseous fuel
- F23K5/007—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/005—Regulating fuel supply using electrical or electromechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/007—Regulating fuel supply using mechanical means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Feeding And Controlling Fuel (AREA)
- Safety Valves (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ガスコンロ等のガ
ス器具に使用するガスガバナに関する。The present invention relates to a gas governor used for gas appliances such as a gas stove.
【０００２】[0002]
【従来の技術】従来、この種のガスガバナは、ガス流入
室と、ガス流入室に弁孔を介して挿通するガス流出室
と、弁孔の開度を可変する弁体と、ガス流出室内の２次
ガス圧を受けるダイヤフラムとを備え、ダイヤフラムに
弁体を連結して、弁体をダイヤフラムの背面のばね部材
により開き側に付勢し、ガス流入室内の１次ガス圧の変
化で２次ガス圧が変化したとき、ダイヤフラムを介して
の弁体の変位で弁孔の開度を変化させ、１次ガス圧が変
化しても２次ガス圧が所定の一定値に維持されるように
構成されている（特開平６−１５９６５４号公報等参
照）。2. Description of the Related Art Conventionally, a gas governor of this type includes a gas inflow chamber, a gas outflow chamber inserted into the gas inflow chamber through a valve hole, a valve body that varies the opening of the valve hole, and a gas inflow chamber. A diaphragm that receives a secondary gas pressure, a valve body connected to the diaphragm, and the valve body is urged to the open side by a spring member on the back surface of the diaphragm, and the secondary gas is changed by a change in the primary gas pressure in the gas inflow chamber. When the gas pressure changes, the opening of the valve hole is changed by the displacement of the valve body via the diaphragm so that the secondary gas pressure is maintained at a predetermined constant value even if the primary gas pressure changes. (See, for example, JP-A-6-159654).
【０００３】[0003]
【発明が解決しようとする課題】上記従来のガスガバナ
は、部品点数が多く、且つ、ダイヤフラムの単価も高い
ため、コストが高くなる。また、ダイヤフラムはゴム製
であって、耐熱温度が低いため、温度の高い場所での使
用が制限され、更に、ダイヤフラムを小さくすると温度
変化による影響を受け易くなるため、小形化が困難にな
る。The above-mentioned conventional gas governor has a large number of parts and a high unit price of the diaphragm, so that the cost is high. Further, since the diaphragm is made of rubber and has a low heat-resistant temperature, its use in a place where the temperature is high is restricted. Further, when the diaphragm is made small, it is easily affected by a temperature change, so that it is difficult to reduce the size.
【０００４】本発明は、以上の点に鑑み、ダイヤフラム
を用いない、小形・低コストで、且つ、耐熱性に優れた
ガスガバナを提供することを課題としている。[0004] In view of the above, an object of the present invention is to provide a small, low-cost gas governor excellent in heat resistance that does not use a diaphragm.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決すべく、
本発明は、ガス流入室と、ガス流入室に弁孔を介して連
通するガス流出室と、ガス流入室内の１次ガス圧が変化
してもガス流出室内の２次ガス圧が一定に維持されるよ
うに弁孔の開度を可変する弁体とを備えるガスガバナに
おいて、ガス流入室を画成する筒状壁を設けて、筒状壁
に、ガス流入室内のガスが流入する筒状の弁体を軸線方
向に摺動自在に内挿すると共に、筒状壁に、弁体の周壁
部に形成した開口に重なる軸線方向に長手のスリット状
の弁孔を形成して、弁体が軸線方向一方に移動したとき
開口に重なる弁孔の部分の開度が減少するようにし、更
に、弁体の軸線方向一方の端部を閉塞して、この閉塞端
の外面に二次ガス圧を作用させると共に、弁体を軸線方
向他方に付勢するばね部材を設けている。Means for Solving the Problems In order to solve the above problems,
The present invention provides a gas inflow chamber, a gas outflow chamber communicating with the gas inflow chamber via a valve hole, and a constant secondary gas pressure in the gas outflow chamber even if the primary gas pressure in the gas inflow chamber changes. In a gas governor provided with a valve body that varies the degree of opening of a valve hole, a cylindrical wall that defines a gas inflow chamber is provided, and the cylindrical wall has a cylindrical shape through which gas in the gas inflow chamber flows. The valve body is slidably inserted in the axial direction, and a slit-shaped valve hole that is long in the axial direction and overlaps the opening formed in the peripheral wall of the valve body is formed in the cylindrical wall. When moved in one direction, the degree of opening of the portion of the valve hole overlapping the opening is reduced, and one end in the axial direction of the valve body is closed, and the secondary gas pressure acts on the outer surface of the closed end. And a spring member for urging the valve body in the other axial direction.
【０００６】本発明によれば、弁体の閉塞端の内面に１
次ガス圧が作用し、１次ガス圧と閉塞端の外面に作用す
る２次ガス圧との圧力差で弁体が軸線方向一方に押圧さ
れ、この押圧力とばね部材の付勢力とがバランスする位
置に弁体が変位する。そして、１次ガス圧が上昇したと
きは、弁体の軸線方向一方への変位で弁孔の開度が減少
して２次ガス圧の上昇が抑制され、１次ガス圧が低下し
たときは、弁体の軸線方向他方への変位で弁孔の開度が
増加して２次ガス圧の低下が抑制される。According to the present invention, the inner surface of the closed end of the valve is
The secondary gas pressure acts, and the valve element is pressed in one of the axial directions by the pressure difference between the primary gas pressure and the secondary gas pressure acting on the outer surface of the closed end, and the pressing force and the urging force of the spring member are balanced. The valve body is displaced to the position where When the primary gas pressure rises, the opening of the valve hole decreases due to the displacement of the valve body in one of the axial directions, the rise in the secondary gas pressure is suppressed, and when the primary gas pressure falls, In addition, the opening of the valve hole increases due to the displacement of the valve body in the other axial direction, and a decrease in the secondary gas pressure is suppressed.
【０００７】ここで、ばね部材として、弁体を軸線方向
一方に押圧する１次ガス圧と２次ガス圧との圧力差によ
る押圧力に等しい付勢力を２次ガス圧が所定の一定値に
なる位置に弁体が変位したときに得られるようなばね特
性を有するものを用いれば、１次ガス圧が変化しても２
次ガス圧は所定の一定値に維持され、正確なガバナ作用
が得られる。尚、ばね部材として、弁体の変位に対し付
勢力が直線的に変化するばね特性を有するものを用いて
も、弁孔のスリット幅を変化させて、弁体の変位に対し
弁孔の開度が非直線的に変化されるようにすることで、
正確なガバナ作用が得られる。Here, as the spring member, an urging force equal to the pressing force due to the pressure difference between the primary gas pressure and the secondary gas pressure for pressing the valve body in one direction in the axial direction is applied so that the secondary gas pressure becomes a predetermined constant value. If a material having a spring characteristic obtained when the valve element is displaced to a certain position is used, even if the primary gas pressure changes,
The secondary gas pressure is maintained at a predetermined constant value, and an accurate governor action can be obtained. It should be noted that even if a spring member having a spring characteristic in which the urging force changes linearly with respect to the displacement of the valve body is used, the slit width of the valve hole is changed to open the valve hole with respect to the displacement of the valve body. By making the degree change non-linearly,
Accurate governor action is obtained.
【０００８】何れにしても、本発明によれば、部品点数
が少なく、且つ、単価の高い部品を用いずに済むため、
コストが安くなり、更に、ダイヤフラムを用いないた
め、温度の高い場所での使用が可能になると共に、小形
化が可能になる。In any case, according to the present invention, the number of parts is small, and it is not necessary to use expensive parts.
Since the cost is low and the diaphragm is not used, it can be used in a place where the temperature is high, and can be downsized.
【０００９】ところで、ガスガバナを収納するバルブブ
ロックに前記筒状壁を一体に形成することも可能である
が、弁孔のスリット幅は使用するガス種に応じて変更す
る必要があり、筒状壁をバルブブロックに一体成形した
のでは、バルブブロックがガス種に応じた専用品となっ
てしまい、コストが高くなる。また、このものではガス
ガバナをサブアッセンブリしておくことができず、ガス
ガバナ単体での性能検査が不可能になる。By the way, it is possible to form the cylindrical wall integrally with the valve block for accommodating the gas governor. However, the slit width of the valve hole needs to be changed according to the type of gas used. Is integrally formed with the valve block, the valve block becomes a dedicated product corresponding to the gas type, and the cost increases. Further, in this case, the gas governor cannot be sub-assembled, and the performance inspection of the gas governor alone becomes impossible.
【００１０】この場合、筒状壁を、ガスガバナを収納す
るバルブブロックに挿脱自在であって、軸線方向一方の
端部に端壁を設けた筒状のケースで構成し、ケース内に
ばね部材と弁体とを収納すると共に、ケースの軸線方向
他方の開口端内に弁体を抜け止めするキャップを装着す
れば、ケースはガス種に応じた専用品になっても、単価
の高いバルブブロックは複数のガス種に共用可能となっ
て、コストダウンを図ることができ、また、ガスガバナ
をサブアッセンブリしておくことができるため、ガスガ
バナ単体での性能検査が可能となり、性能保証がしやす
くなる。In this case, the cylindrical wall is constituted by a cylindrical case which is removably insertable into a valve block for accommodating the gas governor and has an end wall provided at one end in the axial direction. The valve block can be housed in the other axial end of the case and a cap is attached to the case to prevent the valve from coming off. Can be shared by multiple gas types, reducing costs and sub-assembly of the gas governor, enabling performance inspection of the gas governor alone, making it easier to assure performance .
【００１１】また、ガス種が同一であっても、バーナの
大きさによる定格流量の大小に応じて弁孔の初期開度や
ばね部材の初期セット荷重を変更することが必要にな
る。この場合、前記ケースに対する前記キャップの装着
位置を軸線方向に調整自在としておけば、キャップの位
置調整による弁体の変位で弁孔の初期開度を変更するこ
とができ、ケース及び弁体の共用化が可能になる。更
に、ケースの軸線方向一方の端壁に、ばね部材用のばね
受けとなる調整ねじを螺挿しておけば、調整ねじの調整
でばね部材の初期セット荷重を変更でき、ばね部材の共
用化も可能になる。Further, even if the gas type is the same, it is necessary to change the initial opening degree of the valve hole and the initial set load of the spring member according to the magnitude of the rated flow rate depending on the size of the burner. In this case, if the mounting position of the cap with respect to the case is adjustable in the axial direction, the initial opening of the valve hole can be changed by the displacement of the valve body by adjusting the position of the cap, and the case and the valve body can be shared. Becomes possible. Furthermore, if an adjusting screw serving as a spring receiver for the spring member is screwed into one end wall in the axial direction of the case, the initial set load of the spring member can be changed by adjusting the adjusting screw, and the spring member can be shared. Will be possible.
【００１２】[0012]
【発明の実施の形態】図１はガスコンロ等のガス器具に
使用するガス弁装置を示している。このガス弁装置は、
前後方向に長手の第１バルブブロック１と、第１バルブ
ブロック１の前部上方に設けた第２バルブブロック２と
を備えており、第１バルブブロック１の後部に、図外の
バーナの火炎を検知する熱電対の起電力で励磁される電
磁石３ａを有する電磁安全弁３を収納すると共に、第１
バルブブロック１の中間部に、電磁安全弁３に対向する
操作ロッド４に取付けた遮断弁５を収納し、また、第２
バルブブロック２の下部にガスガバナ６を収納すると共
に、第２バルブブロック２の上部に、火力調整レバー７
ａによりカム７ｂを介して上下動される流量調整弁７を
収納している。第１バルブブロック１の前方には点消火
用の操作釦８が設けられており、操作釦８にプッシュプ
ッシュ機構８ａを連結して、操作釦８の１回目の押し操
作によれば、操作ロッド４を介して電磁安全弁３が押圧
開弁されると共に遮断弁５が開弁されて、第１バルブブ
ロック１の後部下面のガス入口１ａからのガスが電磁安
全弁３と遮断弁５とガスガバナ６と流量調整弁７とを介
して第２バルブブロック２の上部後方のガス出口２ａに
流れ、ガス出口２ａに接続したガスノズル（図示せず）
からバーナにガスが供給され、操作釦８の２回目の押し
操作によれば、操作釦８が前方の非押込み位置に復帰し
て遮断弁５が閉弁され、バーナへのガス供給が停止され
るようにしている。FIG. 1 shows a gas valve device used for a gas appliance such as a gas stove. This gas valve device
It comprises a first valve block 1 elongated in the front-rear direction, and a second valve block 2 provided above a front part of the first valve block 1, and a flame of a burner (not shown) is provided at a rear part of the first valve block 1. The electromagnetic safety valve 3 having the electromagnet 3a excited by the electromotive force of the thermocouple for detecting the
A shutoff valve 5 attached to an operation rod 4 facing the electromagnetic safety valve 3 is housed in an intermediate portion of the valve block 1.
The gas governor 6 is housed in the lower part of the valve block 2, and the heating power adjusting lever 7 is provided in the upper part of the second valve block 2.
The flow control valve 7 which is moved up and down by a through a cam 7b is housed. An operation button 8 for extinguishing a point is provided in front of the first valve block 1, and a push-push mechanism 8 a is connected to the operation button 8. The electromagnetic safety valve 3 is depressed and opened via the valve 4 and the shutoff valve 5 is opened, so that the gas from the gas inlet 1a on the rear lower surface of the first valve block 1 is supplied to the electromagnetic safety valve 3, the shutoff valve 5, the gas governor 6 A gas nozzle (not shown) which flows to the gas outlet 2a behind the upper part of the second valve block 2 via the flow control valve 7 and is connected to the gas outlet 2a.
The gas is supplied to the burner from, and according to the second pressing operation of the operation button 8, the operation button 8 returns to the front non-pressed position, the shutoff valve 5 is closed, and the gas supply to the burner is stopped. I am trying to.
【００１３】ガスガバナ６は、遮断弁５に連通するガス
流入室６０と、流量調整弁７に連通する、ガス流入室６
０の上側のガス流出室６１とを備えている。そして、第
２バルブブロック２に挿脱自在な筒状のケース６２を設
けて、該ケース６２によりガス流入室６０を画成する筒
状壁を構成している。また、ケース６２に、ガス流入室
６０内のガスが流入する筒状の弁体６３を軸線方向に摺
動自在に内挿している。尚、ケース６２と弁体６３と
は、図２に示す如く、上側を平坦面とした非円筒形に形
成されており、ケース６２と弁体６３とが夫々第２バル
ブブロック２とケース６２とに対し回り止めされるよう
にしている。また、ケース６２は、第２バルブブロック
２のガバナ装着部の開口端をパッキン６４を介して密閉
する蓋板６５によって第２バルブブロック２に対し抜け
止めされる。図中６６はケース６２の軸線方向内方の端
面と該端面に対向する第２バルブブロック２内の肩面と
の間に介設したパッキンである。The gas governor 6 has a gas inflow chamber 60 communicating with the shut-off valve 5 and a gas inflow chamber 6 communicating with the flow control valve 7.
And a gas outflow chamber 61 on the upper side. The second valve block 2 is provided with a cylindrical case 62 which can be inserted and removed, and the case 62 forms a cylindrical wall defining a gas inflow chamber 60. A cylindrical valve body 63 into which gas in the gas inflow chamber 60 flows is inserted into the case 62 slidably in the axial direction. As shown in FIG. 2, the case 62 and the valve body 63 are formed in a non-cylindrical shape having a flat upper surface, and the case 62 and the valve body 63 are respectively formed by the second valve block 2 and the case 62. To prevent rotation. Further, the case 62 is prevented from being pulled out of the second valve block 2 by a cover plate 65 that seals the open end of the governor mounting portion of the second valve block 2 via a packing 64. In the figure, reference numeral 66 denotes a packing interposed between the axially inner end surface of the case 62 and a shoulder surface in the second valve block 2 facing the end surface.
【００１４】ケース６２の周壁部のガス流入室６０に面
する上側面には、軸線方向に長手のスリット状の弁孔６
２ａが形成されており、弁体６３の周壁部上側面に開口
６３ａを形成して、開口６３ａに重なる弁孔６２ａの部
分を介してガス流入室６０からガス流出室６１にガスが
流れるようにしている。そして、弁体６３がケース６２
に対し軸線方向外方に移動したとき、開口６３ａに重な
る弁孔６２ａの部分の面積、即ち、弁孔６２ａの開度が
減少されるようにしている。An upper surface of the peripheral wall of the case 62 facing the gas inflow chamber 60 has a slit-shaped valve hole 6 elongated in the axial direction.
An opening 63a is formed in the upper surface of the peripheral wall of the valve body 63 so that gas flows from the gas inflow chamber 60 to the gas outflow chamber 61 through a portion of the valve hole 62a overlapping the opening 63a. ing. Then, the valve body 63 is
When moving outward in the axial direction, the area of the valve hole 62a overlapping the opening 63a, that is, the opening of the valve hole 62a is reduced.
【００１５】弁体６３の軸線方向外方の端部は閉塞され
ており、ケース６２の上側面の軸線方向外方の端部に切
欠き６２ｂを形成して、ガス流出室６１内の２次ガス圧
Ｐ2が切欠き６２ｂを介して弁体６３の閉塞端６３ｂの
外面に作用するようにし、また、弁体６３閉塞端６３ｂ
と蓋板６５との間にばね部材６７を介設して、弁体６３
をばね部材６７により軸線方向内方に付勢している。The axially outer end of the valve body 63 is closed, and a notch 62 b is formed at the axially outer end of the upper surface of the case 62, so that the secondary through the gas pressure P 2 is the notch 62b so as to act on the outer surface of the closed end 63b of the valve body 63, also, the valve element 63 closed end 63b
A spring member 67 is interposed between the valve body 63 and the
Is urged inward in the axial direction by a spring member 67.
【００１６】ここで、弁体６３の閉塞端６３ｂの内面に
はガス流入室６０内の１次ガス圧Ｐ 1が作用する。その
ため、弁体６３は１次ガス圧Ｐ1と２次ガス圧Ｐ2との圧
力差により軸線方向外方に押圧され、この押圧力とばね
部材６７の付勢力とがバランスする位置に変位する。図
３を参照して、弁孔６２ａの長さと幅を夫々Ｌ，Ｗ、弁
体６３の変位量をｘ、ガスノズルのノズル径をＤとする
と、弁孔６２ａとガスノズルとでのガス流量収支によ
り、 （Ｃは係数）が成立し、また、弁体６３の受圧面積（閉
塞端６３ｂの面積）をＳ、ばね部材６７の初期セット荷
重とばね定数を夫々Ｆｏ，ｋとすると、１次ガス圧Ｐ1
と２次ガス圧Ｐ2との圧力差による押圧力とばね部材６
７の付勢力とのバランスにより、 が成立する。そして、Ｐ2を所定の一定値にしたときの
Ｐ1の変化によるｘの値とばね部材６７の付勢力（＝Ｆ
ｏ＋ｋｘ）の値とを（１）式と（２）式とから求めてプ
ロットすると、図４に示すようになる。尚、図４のａ線
は定格火力（流量調整弁７を全開にしたときの火力）の
大きなバーナに適合するようにノズル径Ｄを大きくした
場合を示し、ｂ線は定格火力の小さなバーナに適合する
ようにノズル径Ｄを小さくした場合を示している。図４
のａ，ｂ線は、Ｐ1とＰ2との圧力差による押圧力に等し
いばね付勢力をＰ2が所定の一定値になる位置に弁体６
３が変位したときに得られるようなばね特性を表わして
おり、弁体６３の変位に対しばね付勢力が非直線的に変
化する。そのため、ばね部材６７として不等ピッチコイ
ルばねや重ね板ばね等のばね定数が変化するばねを用
い、図４のａ，ｂ線に近似したばね特性が得られるよう
にすれば、１次ガス圧Ｐ1が変化しても２次ガス圧Ｐ2が
所定の一定値に維持される。また、１次ガス圧Ｐ1が狭
い範囲でのみ変化する場合には、図４のａ，ｂ線の限ら
れた範囲を直線近似したばね定数を持つばねを用いるこ
とも可能である。更に、弁孔６２ａを不等幅のスリット
状に形成し、弁体６３の変位に対し弁孔６２ａの開度が
非直線的に変化されるようにすれば、ばね部材６７とし
てばね定数が一定の通常のばねを用いることも可能であ
る。Here, on the inner surface of the closed end 63b of the valve body 63,
Is the primary gas pressure P in the gas inflow chamber 60 1Works. That
Therefore, the valve body 63 has the primary gas pressure P1And secondary gas pressure PTwoAnd pressure
It is pushed outward in the axial direction by the force difference.
The member 67 is displaced to a position where the biasing force is balanced. Figure
3, the length and width of the valve hole 62a are L and W, respectively,
The displacement amount of the body 63 is x, and the nozzle diameter of the gas nozzle is D.
And the gas flow balance between the valve hole 62a and the gas nozzle.
And(C is a coefficient), and the pressure receiving area of the valve body 63 (closed
S is the area of the closed end 63b, and the initial set load of the spring member 67 is S.
Assuming that the weight and the spring constant are Fo and k, respectively, the primary gas pressure P1
And secondary gas pressure PTwoAnd the spring member 6
By the balance with the urging force of 7,Holds. And PTwoAt a predetermined constant value
P1And the urging force of the spring member 67 (= F
o + kx) is calculated from equations (1) and (2), and
The lot is as shown in FIG. The line a in FIG.
Is the rated thermal power (thermal power when the flow control valve 7 is fully opened)
Increased nozzle diameter D to fit large burner
Line b is suitable for burners with small rated thermal power
Thus, the case where the nozzle diameter D is reduced is shown. FIG.
The lines a and b of P1And PTwoEqual to the pressing force due to the pressure difference between
The spring biasing force to PTwoAt a position where the value becomes a predetermined constant value.
3 shows the spring characteristics as obtained when displaced
The spring urging force varies nonlinearly with the displacement of the valve body 63.
Become Therefore, the uneven pitch coil is used as the spring member 67.
Use a spring whose spring constant changes, such as
In order to obtain a spring characteristic similar to the lines a and b in FIG.
If the primary gas pressure P1Changes in the secondary gas pressure PTwoBut
It is maintained at a predetermined constant value. Also, the primary gas pressure P1Is narrow
In the case where it changes only within the range shown in FIG.
Use a spring with a spring constant that approximates the
Both are possible. Further, the valve hole 62a is formed with a slit of unequal width.
And the degree of opening of the valve hole 62 a with respect to the displacement of the valve body 63.
If it is made to change nonlinearly, the spring member 67
It is also possible to use a normal spring with a constant spring constant.
You.
【００１７】ところで、ガス種によって２次ガス圧Ｐ2
の目標値が変わり、また、同一ガス種であっても大バー
ナと小バーナとではノズル径Ｄの大小による定格流量の
変化で、１次ガス圧Ｐ1が基準値であるときに２次ガス
圧Ｐ2を目標値にするのに必要な弁孔６３ａの開度（基
準開度）も変わる。図４は弁孔６３ａのスリット幅Ｗを
一定にしたときのばね特性を示しているが、スリット幅
Ｗを定格流量の大小に合わせて変えれば、定格流量の差
によるばね特性の差を無くすことも可能である。Incidentally, the secondary gas pressure P 2 depends on the gas type.
The target value is changed, also the change of the rated flow rate by the size of the nozzle diameter D is also the same gas species in the large burner and small burner, secondary gas when the primary gas pressure P 1 is a standard value degree of opening of the valve hole 63a necessary for the pressure P 2 to the target value (the reference opening) also changes. FIG. 4 shows the spring characteristics when the slit width W of the valve hole 63a is constant. If the slit width W is changed according to the magnitude of the rated flow, the difference in the spring characteristics due to the difference in the rated flow is eliminated. Is also possible.
【００１８】ここで、ガス流入室６０を画成する筒状壁
を第２バルブブロック２に一体成形することも考えられ
るが、これでは、弁孔６３ａのスリット幅Ｗをガス種や
定格流量に応じて変える場合、第２バルブブロック２が
ガス種や定格流量に応じた専用品になってしまう。これ
に対し、上記第１実施形態の如く、ガス流入室６０を画
成する筒状壁をケース６２で構成すれば、ケース６２の
みを専用品として、第２バルブブロック２は共用化で
き、コストダウンを図る上で有利である。Here, it is conceivable that the cylindrical wall defining the gas inflow chamber 60 is integrally formed with the second valve block 2. However, in this case, the slit width W of the valve hole 63a is adjusted to the gas type and the rated flow rate. In the case where the second valve block 2 is changed depending on the gas type and the rated flow rate, the second valve block 2 is a dedicated product. On the other hand, if the cylindrical wall defining the gas inflow chamber 60 is formed of the case 62 as in the first embodiment, the case 62 alone can be used as a dedicated product, and the second valve block 2 can be shared. This is advantageous for downing.
【００１９】然し、第１実施形態のものでは、第２バル
ブブロック２にケース６２と弁体６３とばね部材６７と
を組込んで初めてガスガバナ６が組立てられるため、ガ
バナ単体での性能検査ができなくなる。かかる不具合を
解消したのが、図５及び図６に示す第２実施形態であ
る。即ち、第２実施形態では、ケース６２の軸線方向外
方の端部に端壁６２ｃを設けて、この端壁６２ｃと弁体
６３の閉塞端６３ｂとの間にばね部材６７が介設される
ようにばね部材６７と弁体６３とをケース６２に収納す
ると共に、ケース６２の軸線方向内方の開口端内に弁体
６３を抜け止めするキャップ６８を装着している。これ
によれば、ガスガバナ６を構成するケース６２と弁体６
３とばね部材６７とから成る主要３部品を予めサブアッ
センブリしておくことができ、ガバナ単体での性能検査
が可能となって、性能保証がしやすくなる。また、第２
実施形態では、キャップ６８をケース６２の開口端内に
螺入して、ケース６２に対するキャップ６８の装着位置
を軸線方向に調整自在としている。そのため、キャップ
６８の位置調整による弁体６３の変位で弁孔６２ａの初
期開度を変更することができる。ここで、初期開度は、
１次ガス圧Ｐ1がその変動範囲の下限値より若干低い圧
になったときの開度に設定すべきであり、定格流量の大
小で弁孔６２ａのスリット幅Ｗ及び弁体６３を変更しな
い場合、図４のｘａが定格流量が大きいときの初期開度
に対応する弁体６３の初期位置となり、同図ｘｂが定格
流量が小さいときの初期開度に対応する弁体６３の初期
位置となる。そして、第２実施形態では、キャップ６８
の位置調整で弁体６３の初期位置を定格流量に合わせて
変更できるため、ケース６２及び弁体６３の共用化が可
能となる。However, in the first embodiment, the gas governor 6 can be assembled only after the case 62, the valve body 63, and the spring member 67 are assembled into the second valve block 2, so that the performance can be inspected by the governor alone. Disappears. The second embodiment shown in FIGS. 5 and 6 solves such a problem. That is, in the second embodiment, the end wall 62c is provided at the axially outer end of the case 62, and the spring member 67 is interposed between the end wall 62c and the closed end 63b of the valve body 63. As described above, the spring member 67 and the valve body 63 are housed in the case 62, and the cap 68 for preventing the valve body 63 from coming off is mounted in the axially inward opening end of the case 62. According to this, the case 62 constituting the gas governor 6 and the valve body 6
The three main components consisting of the spring 3 and the spring member 67 can be pre-assembled, so that the performance can be inspected by the governor alone, and the performance can be easily guaranteed. Also, the second
In the embodiment, the cap 68 is screwed into the open end of the case 62 so that the mounting position of the cap 68 with respect to the case 62 can be adjusted in the axial direction. Therefore, the initial opening of the valve hole 62a can be changed by the displacement of the valve body 63 due to the position adjustment of the cap 68. Here, the initial opening is
The opening should be set when the primary gas pressure P 1 becomes a pressure slightly lower than the lower limit of the fluctuation range, and the slit width W of the valve hole 62 a and the valve body 63 are not changed depending on the magnitude of the rated flow rate. In this case, xa in FIG. 4 is the initial position of the valve body 63 corresponding to the initial opening when the rated flow is large, and FIG. Xb is the initial position of the valve body 63 corresponding to the initial opening when the rated flow is small. Become. Then, in the second embodiment, the cap 68
Since the initial position of the valve body 63 can be changed in accordance with the rated flow rate by adjusting the position, the case 62 and the valve body 63 can be shared.
【００２０】尚、図４から明らかなように、弁体６３の
初期位置におけるばね部材６７の付勢力（初期セット荷
重）は、初期位置の変位量ｘが小さな定格流量大の場合
よりも初期位置の変位量が大きな定格流量小の場合の方
が小さくなるように設定すべきであり、定格流量に合わ
せてばね部材６７を変更することが必要になる。As is apparent from FIG. 4, the urging force (initial set load) of the spring member 67 at the initial position of the valve body 63 is smaller than the case where the displacement x at the initial position is small and the rated flow rate is large. Should be set to be smaller when the displacement amount is large and the rated flow rate is small, and it is necessary to change the spring member 67 in accordance with the rated flow rate.
【００２１】そこで、図７及び図８に示す第３実施形態
では、ケース６２の軸線方向外方の端壁６２ｃに、ばね
部材６７用のばね受けとなる調整ねじ６９を螺挿し、調
整ねじ６９の調整でばね部材６７の初期セット荷重を任
意に可変し得るようにしている。これによれば、ばね部
材６７の共用化も可能になり、一層のコストダウンを図
れる。Therefore, in the third embodiment shown in FIGS. 7 and 8, an adjusting screw 69 serving as a spring receiver for the spring member 67 is screwed into the axially outer end wall 62c of the case 62. The initial set load of the spring member 67 can be arbitrarily changed by the adjustment of (1). According to this, the spring member 67 can be shared, and the cost can be further reduced.
【００２２】以上、ガス弁装置に組込むガスガバナに本
発明を適用した実施形態について説明したが、ガス弁装
置と分離独立して設けるガスガバナにも同様に本発明を
適用できる。Although the embodiment in which the present invention is applied to the gas governor incorporated in the gas valve device has been described above, the present invention can be similarly applied to a gas governor provided separately and independently from the gas valve device.
【図面の簡単な説明】[Brief description of the drawings]
【図１】 本発明の第１実施形態のガスガバナを組込ん
だガス弁装置の断面図FIG. 1 is a sectional view of a gas valve device incorporating a gas governor according to a first embodiment of the present invention.
【図２】 第１実施形態のガスガバナの分解斜視図FIG. 2 is an exploded perspective view of the gas governor of the first embodiment.
【図３】 本発明ガスガバナの原理を示す図FIG. 3 shows the principle of the gas governor of the present invention.
【図４】 ガバナ作用を得るために必要なばね特性を示
すグラフFIG. 4 is a graph showing a spring characteristic necessary for obtaining a governor action.
【図５】 本発明の第２実施形態のガスガバナを組込ん
だガス弁装置の断面図FIG. 5 is a sectional view of a gas valve device incorporating a gas governor according to a second embodiment of the present invention.
【図６】 第２実施形態のガスガバナの截断斜視図FIG. 6 is a cutaway perspective view of a gas governor according to a second embodiment.
【図７】 本発明の第３実施形態のガスガバナを組込ん
だガス弁装置の断面図FIG. 7 is a sectional view of a gas valve device incorporating a gas governor according to a third embodiment of the present invention.
【図８】 第３実施形態のガスガバナの截断斜視図FIG. 8 is a cutaway perspective view of a gas governor according to a third embodiment.
２ 第２バルブブロック ６ ガスガバナ ６０ ガス流入室 ６１ ガス流出室 ６２ ケース ６２ａ 弁孔 ６２ｃ 端壁 ６３ 弁体 ６３ａ 開口 ６３ｂ 閉塞端 ６７ ばね部材 ６８ キャップ ６９ 調整ねじ 2 second valve block 6 gas governor 60 gas inflow chamber 61 gas outflow chamber 62 case 62a valve hole 62c end wall 63 valve body 63a opening 63b closed end 67 spring member 68 cap 69 adjusting screw
Claims (5)
て連通するガス流出室と、ガス流入室内の１次ガス圧が
変化してもガス流出室内の２次ガス圧が一定に維持され
るように弁孔の開度を可変する弁体とを備えるガスガバ
ナにおいて、 ガス流入室を画成する筒状壁を設けて、筒状壁に、ガス
流入室内のガスが流入する筒状の弁体を軸線方向に摺動
自在に内挿すると共に、 筒状壁に、弁体の周壁部に形成した開口に重なる軸線方
向に長手のスリット状の弁孔を形成して、弁体が軸線方
向一方に移動したとき開口に重なる弁孔の部分の開度が
減少するようにし、 更に、弁体の軸線方向一方の端部を閉塞して、この閉塞
端の外面に二次ガス圧を作用させると共に、弁体を軸線
方向他方に付勢するばね部材を設ける、 ことを特徴とするガスガバナ。1. A gas inflow chamber, a gas outflow chamber communicating with the gas inflow chamber via a valve hole, and a secondary gas pressure in the gas outflow chamber being kept constant even if a primary gas pressure in the gas inflow chamber changes. A gas governor comprising: a valve body that varies a degree of opening of a valve hole so as to be maintained; wherein a cylindrical wall defining a gas inflow chamber is provided, and the cylindrical wall into which gas in the gas inflow chamber flows is provided. The valve body is slidably inserted in the axial direction while slidably inserted in the axial direction, and a slit-shaped valve hole that is elongated in the axial direction overlapping the opening formed in the peripheral wall portion of the valve body is formed in the cylindrical wall. The degree of opening of the portion of the valve hole that overlaps the opening when moved in one direction in the axial direction is reduced, and one end in the axial direction of the valve body is closed, and the secondary gas pressure is applied to the outer surface of the closed end. And a spring member for biasing the valve element in the other axial direction.
する１次ガス圧と２次ガス圧との圧力差による押圧力に
等しい付勢力を２次ガス圧が所定の一定値になる位置に
弁体が変位したときに得られるようなばね特性を有する
ものに構成されることを特徴とする請求項１に記載のガ
スガバナ。2. The spring member has an urging force equal to a pressing force due to a pressure difference between a primary gas pressure and a secondary gas pressure that presses the valve body in one axial direction, and the secondary gas pressure has a predetermined constant value. The gas governor according to claim 1, wherein the gas governor is configured to have a spring characteristic obtained when the valve body is displaced to a position.
ブロックに挿脱自在であって、軸線方向一方の端部に端
壁を設けた筒状のケースで構成し、ケース内にばね部材
と弁体とを収納すると共に、ケースの軸線方向他方の開
口端内に弁体を抜け止めするキャップを装着することを
特徴とする請求項１又は２に記載のガスガバナ。3. A cylindrical case which is removably insertable into a valve block for accommodating a gas governor and has an end wall at one end in an axial direction, wherein a spring member and a spring member are provided in the case. The gas governor according to claim 1, wherein the gas governor includes a valve body, and a cap that prevents the valve body from coming off is mounted in the other open end of the case in the axial direction.
線方向に調整自在とすることを特徴とする請求項３に記
載のガスガバナ。4. The gas governor according to claim 3, wherein a mounting position of the cap with respect to the case is adjustable in an axial direction.
材用のばね受けとなる調整ねじを螺挿することを特徴と
する請求項４に記載のガスガバナ。5. The gas governor according to claim 4, wherein an adjusting screw serving as a spring receiver for the spring member is screwed into one end wall in the axial direction of the case.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000198861A JP3753929B2 (en) | 2000-06-30 | 2000-06-30 | Gas governor |
| TW089126012A TW448276B (en) | 2000-06-30 | 2000-12-06 | Gas regulator |
| KR10-2001-0038365A KR100466102B1 (en) | 2000-06-30 | 2001-06-29 | gas governor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000198861A JP3753929B2 (en) | 2000-06-30 | 2000-06-30 | Gas governor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002013729A true JP2002013729A (en) | 2002-01-18 |
| JP3753929B2 JP3753929B2 (en) | 2006-03-08 |
Family
ID=18696959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000198861A Expired - Fee Related JP3753929B2 (en) | 2000-06-30 | 2000-06-30 | Gas governor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3753929B2 (en) |
| KR (1) | KR100466102B1 (en) |
| TW (1) | TW448276B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829831A (en) * | 2017-12-18 | 2018-03-23 | 中科合肥微小型燃气轮机研究院有限责任公司 | A kind of gas turbine starting cleaning valve |
| CN108644167A (en) * | 2018-05-04 | 2018-10-12 | 广州市海同机电设备有限公司 | A kind of speed stabilizing mechanism and pressure feedback formula speed stabilizing valve of control valve |
| JP2020148348A (en) * | 2019-03-11 | 2020-09-17 | 株式会社パロマ | Gas cooking stove |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5685636A (en) * | 1979-12-12 | 1981-07-11 | Toshiba Corp | Gas combustion device |
| JPS6172917A (en) * | 1984-09-18 | 1986-04-15 | Mitsubishi Electric Corp | Gaseous fuel feeding device |
| JP2952928B2 (en) * | 1990-01-31 | 1999-09-27 | 松下電器産業株式会社 | Gas control device |
| KR200148703Y1 (en) * | 1996-08-16 | 1999-06-15 | 전주범 | Pressure regulating system for gas governor |
-
2000
- 2000-06-30 JP JP2000198861A patent/JP3753929B2/en not_active Expired - Fee Related
- 2000-12-06 TW TW089126012A patent/TW448276B/en active
-
2001
- 2001-06-29 KR KR10-2001-0038365A patent/KR100466102B1/en not_active IP Right Cessation
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829831A (en) * | 2017-12-18 | 2018-03-23 | 中科合肥微小型燃气轮机研究院有限责任公司 | A kind of gas turbine starting cleaning valve |
| CN107829831B (en) * | 2017-12-18 | 2023-06-13 | 中科合肥微小型燃气轮机研究院有限责任公司 | Start cleaning valve for gas turbine |
| CN108644167A (en) * | 2018-05-04 | 2018-10-12 | 广州市海同机电设备有限公司 | A kind of speed stabilizing mechanism and pressure feedback formula speed stabilizing valve of control valve |
| CN108644167B (en) * | 2018-05-04 | 2024-06-18 | 广州海同工业技术有限公司 | Speed stabilizing mechanism of control valve and pressure feed type speed stabilizing valve |
| JP2020148348A (en) * | 2019-03-11 | 2020-09-17 | 株式会社パロマ | Gas cooking stove |
| JP7237350B2 (en) | 2019-03-11 | 2023-03-13 | 株式会社パロマ | Gas stove |
Also Published As
| Publication number | Publication date |
|---|---|
| TW448276B (en) | 2001-08-01 |
| KR20020003102A (en) | 2002-01-10 |
| JP3753929B2 (en) | 2006-03-08 |
| KR100466102B1 (en) | 2005-01-13 |
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