JP2003254534A - Gas flow rate control device - Google Patents
Gas flow rate control deviceInfo
- Publication number
- JP2003254534A JP2003254534A JP2002056786A JP2002056786A JP2003254534A JP 2003254534 A JP2003254534 A JP 2003254534A JP 2002056786 A JP2002056786 A JP 2002056786A JP 2002056786 A JP2002056786 A JP 2002056786A JP 2003254534 A JP2003254534 A JP 2003254534A
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- gas
- secondary pressure
- gas flow
- opening
- 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
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
ス器具に使用されるガス流量制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas flow rate control device used for gas appliances such as gas stoves.
【０００２】[0002]
【従来の技術】この種のガス流量制御装置は、例えば、
特開２００１−５６１１８号が知られ、例えば、ガスコ
ンロに設けたガスバーナーの火力を調節する際に、ガス
バーナーの設定火力の変化を少なくするのに使用され
る。2. Description of the Related Art A gas flow rate control device of this type is, for example,
Japanese Unexamined Patent Publication No. 2001-56118 is known and is used, for example, to reduce the change in the set heating power of the gas burner when adjusting the heating power of the gas burner provided in the gas stove.
【０００３】この場合、ガス流量制御装置は、ガスバー
ナーの混合管に接続されたガス噴射ノズルに連なるガス
通路に、該ガス通路の開度を変更する絞り部を設けた流
量調節手段であるモータ駆動式のガスバルブと、該ガス
バルブとガス噴射ノズルとの間に設けたガス通路内の二
次圧を検出する二次圧検出手段である圧力センサとを有
する。In this case, the gas flow rate control device is a motor which is a flow rate adjusting means in which a gas passage connected to a gas injection nozzle connected to a mixing pipe of a gas burner is provided with a throttle portion for changing the opening of the gas passage. It has a drive type gas valve and a pressure sensor which is a secondary pressure detecting means for detecting a secondary pressure in a gas passage provided between the gas valve and the gas injection nozzle.
【０００４】そして、ガスコンロの作動を制御するマイ
コンによって、圧力センサで検出した二次圧が、予めマ
イコンに記憶させた目標二次圧に一致するようにモータ
を制御して絞り部の開度を調節して設定火力の変化を少
なくする。Then, by the microcomputer controlling the operation of the gas stove, the motor is controlled so that the secondary pressure detected by the pressure sensor matches the target secondary pressure stored in the microcomputer in advance, and the opening degree of the throttle portion is adjusted. Adjust to reduce the change in set firepower.
【０００５】[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、ガス通路内の一次圧が変動して低くなること
でガスバルブの開度が最大であるときの二次圧が低くな
った場合、その二次圧と目標二次圧とが一致するガスバ
ルブの開度以上に開度を変えてもガスバーナーの火力が
変更できない。このため、設定火力相互間の火力幅が不
均一になり、ガス器具の使い勝手が悪くなるという問題
があった。However, in the above, when the primary pressure in the gas passage fluctuates and becomes low, the secondary pressure at the maximum opening of the gas valve becomes low. The thermal power of the gas burner cannot be changed even if the opening is changed beyond the opening of the gas valve at which the secondary pressure and the target secondary pressure match. For this reason, there has been a problem that the heating power widths between the set heating powers become non-uniform, and the usability of the gas appliance deteriorates.
【０００６】また、上記のものでは、モータを制御して
火力調節する毎に、マイコンのＣＰＵが圧力センサの検
出結果からモータの制御ポジションを算出する処理と、
ガスバルブの開度調節のためのモータの駆動制御処理と
を同時に行うので、ＣＰＵの負荷が大きくなる。このた
め、特に、調理者の利便性を高めるため器具の作動を電
子制御するガスコンロでは、演算処理能力の高いＣＰＵ
が必要になり、コスト高を招くという問題があった。Further, in the above-mentioned one, the CPU of the microcomputer calculates the control position of the motor from the detection result of the pressure sensor every time the motor is controlled to adjust the heating power,
Since the motor drive control processing for adjusting the opening of the gas valve is performed at the same time, the load on the CPU increases. For this reason, in particular, in the gas stove that electronically controls the operation of the utensil in order to improve the convenience of the cook, the CPU having a high calculation processing capability is used.
However, there is a problem that the cost is increased.
【０００７】そこで、本発明は、上記問題点に鑑み、演
算処理能力の高いＣＰＵを必要とせず、その上、一次圧
が変化した場合でもガスバーナーの設定火力相互間の火
力幅を均等にできるガス流量制御装置を提供することを
課題とするものである。In view of the above problems, therefore, the present invention does not require a CPU having a high calculation processing capacity, and moreover, even if the primary pressure changes, the heating power widths between the set heating powers of the gas burner can be made uniform. An object is to provide a gas flow rate control device.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するた
め、本発明のガス流量制御装置は、ガス噴射ノズルに連
なるガス通路に、該ガス噴射ノズルへの燃料ガスのガス
流量を調節する流量調節手段と、該流量調節手段の下流
側における燃料ガスの二次圧を検出する二次圧検出手段
とを設け、該流量調節手段は、ガス通路の開度を変更し
て、ガスバーナーの設定火力を定める最小ガス流量から
最大ガス流量までのガス流量に対応する二次圧を増減す
る絞り部を有するガス流量制御装置において、前記流量
調節手段を介してガス通路に燃料ガスを流し、前記二次
圧検出手段によって二次圧を検出し、該検出した二次圧
から各設定火力を定めるガス流量に対応する絞り部の開
度を補正し、補正後の絞り部の開度でガスバーナーの火
力調節を行うことを特徴とする。In order to solve the above-mentioned problems, a gas flow rate control device of the present invention adjusts a gas flow rate of a fuel gas to a gas injection nozzle in a gas passage communicating with the gas injection nozzle. Means and a secondary pressure detecting means for detecting the secondary pressure of the fuel gas on the downstream side of the flow rate adjusting means are provided, and the flow rate adjusting means changes the opening degree of the gas passage to set the heating power of the gas burner. In a gas flow rate control device having a throttle part for increasing or decreasing the secondary pressure corresponding to the gas flow rate from the minimum gas flow rate to the maximum gas flow rate, the fuel gas is caused to flow through the gas passage via the flow rate adjusting means, The secondary pressure is detected by the pressure detection means, the opening of the throttle portion corresponding to the gas flow rate that determines each set thermal power is corrected from the detected secondary pressure, and the thermal power of the gas burner is adjusted by the corrected opening of the throttle portion. To make adjustments And butterflies.
【０００９】本発明によれば、ガス通路に燃料ガスを流
すと、流量調節手段により流量調節された燃料ガスがガ
ス噴射ノズルに流れる。この場合、二次圧検出手段が、
流量調節手段とガス噴射ノズルとの間におけるガス通路
内の燃料ガスの二次圧を検出し、検出した二次圧から、
ガスバーナーの各設定火力を定めるガス流量に対応する
絞り部の開度を補正する。そして、各ガスバーナーの火
力は、補正後絞り部の開度に応じて調節される。According to the present invention, when the fuel gas is flown through the gas passage, the fuel gas whose flow rate is adjusted by the flow rate adjusting means flows through the gas injection nozzle. In this case, the secondary pressure detection means
Detecting the secondary pressure of the fuel gas in the gas passage between the flow rate adjusting means and the gas injection nozzle, from the detected secondary pressure,
Correct the opening of the throttle that corresponds to the gas flow rate that determines each set thermal power of the gas burner. Then, the heating power of each gas burner is adjusted according to the opening degree of the throttle portion after correction.
【００１０】この場合、前記二次圧の検出を、例えば、
絞り部の開度を変更して最小ガス流量及び最大ガス流量
について行うようにするのがよい。In this case, the detection of the secondary pressure is performed by, for example,
It is advisable to change the opening of the throttle to perform the minimum gas flow rate and the maximum gas flow rate.
【００１１】また、絞り部の開度が最大における二次圧
を検出して補正する場合、一次圧が変動して高くなるこ
とで高くなった二次圧に基づいて補正したのでは、必要
以上にガスバーナー火力が高くなることが考えられる。Further, in the case of detecting and correcting the secondary pressure at the maximum opening of the throttle portion, if the correction is made on the basis of the secondary pressure increased due to the fluctuation and increase of the primary pressure, it is more than necessary. It is conceivable that the gas burner fire power will increase.
【００１２】この場合、前記二次圧の検出を、絞り部の
開度を変更して最大ガス流量について行い、検出した二
次圧が初期二次圧より高くなると、該初期二次圧から絞
り部の開度を補正すればよい。In this case, the detection of the secondary pressure is performed for the maximum gas flow rate by changing the opening of the throttle portion, and when the detected secondary pressure becomes higher than the initial secondary pressure, the throttle is changed from the initial secondary pressure. The opening of the part may be corrected.
【００１３】また、二次圧検出手段により検出した二次
圧に基づいて絞り部の開度を補正する場合、二次圧検出
手段の特性が経時変化して、例えば、通常より二次圧を
高く表示するようになれば、上記と同様、必要以上にガ
スバーナーの火力が高くなる等の不都合が生じる。Further, when the opening of the throttle portion is corrected based on the secondary pressure detected by the secondary pressure detecting means, the characteristic of the secondary pressure detecting means changes with time, for example, the secondary pressure becomes higher than usual. If the display is high, as in the case described above, the inconvenience of increasing the heating power of the gas burner more than necessary occurs.
【００１４】この場合、前記検出した二次圧が、所定の
圧力範囲から外れていると前記二次圧検出手段の故障を
警告するようにすればよい。In this case, if the detected secondary pressure is out of the predetermined pressure range, a warning of the failure of the secondary pressure detecting means may be given.
【００１５】尚、前記流量調節手段が閉止機能を有する
ようにするのがよい。It is preferable that the flow rate adjusting means has a closing function.
【００１６】この場合、前記二次圧検出手段とガス噴射
ノズルとの間に開閉弁を設け、ガス噴射ノズルへの燃料
ガスの供給を停止する際、流量調節手段より前に開閉弁
を閉弁し、前記検出手段による圧力低下速度を検出する
ようにすれば、二次圧検出手段等からのガス漏れの発生
が判断できる。In this case, an opening / closing valve is provided between the secondary pressure detecting means and the gas injection nozzle, and when the supply of the fuel gas to the gas injection nozzle is stopped, the opening / closing valve is closed before the flow rate adjusting means. However, if the pressure reduction rate is detected by the detection means, it is possible to determine the occurrence of gas leakage from the secondary pressure detection means or the like.
【００１７】[0017]
【発明の実施の形態】図１及び図２を参照して、１は、
本発明のガス流量制御装置である。ガス流量制御装置１
は、例えば、ガスコンロに設けたガスバーナーの混合管
に接続されたガス噴射ノズル（図示せず）に連なるガス
通路１１を備えた装置本体１２を有する。装置本体１２
の一端の下面には、ガス噴射ノズルへの燃料ガスのガス
流量を調節する流量調節手段であるガスバルブ２が設け
られている。BEST MODE FOR CARRYING OUT THE INVENTION Referring to FIGS.
It is a gas flow rate control device of the present invention. Gas flow controller 1
Has an apparatus main body 12 having a gas passage 11 connected to a gas injection nozzle (not shown) connected to a mixing pipe of a gas burner provided in a gas stove, for example. Device body 12
A gas valve 2 which is a flow rate adjusting means for adjusting the gas flow rate of the fuel gas to the gas injection nozzle is provided on the lower surface of one end of the.
【００１８】ガスバルブ２は、内部通路２１を有するバ
ルブケーシング２２を有し、バルブケーシング２２の側
面にはガス流入口２３が開設され、ガス流入口２３は、
内部通路２１を介してガス通路１１に通じるバルブケー
シング２２の上面のガス流出口２４に連通する。The gas valve 2 has a valve casing 22 having an internal passage 21, a gas inlet 23 is opened on the side surface of the valve casing 22, and the gas inlet 23 is
It communicates with the gas outlet 24 on the upper surface of the valve casing 22 which communicates with the gas passage 11 through the internal passage 21.
【００１９】バルブケーシング２２の下面には、回転各
検出手段３１を有するステッピングモータ、ギアドモー
タ等のモータ３が連結され、モータ３の回転軸３２の一
端はシール材３３を介して内部通路２１に突出してい
る。A motor 3 such as a stepping motor or a geared motor having each rotation detecting means 31 is connected to the lower surface of the valve casing 22, and one end of a rotary shaft 32 of the motor 3 projects into the internal passage 21 via a sealing material 33. ing.
【００２０】内部通路２１には、ガス流出口２３の上流
側に位置して回転軸３２の一端に連結された回転ディス
ク４と、該回転ディスク４の上方に位置してバルブケー
シング２２に嵌着された固定ディスク５とが設けられて
いる。回転ディスク４と固定ディスク５とは内部通路２
１の通路面積の開度を変更する絞り部を構成する。In the internal passage 21, a rotary disc 4 located upstream of the gas outlet 23 and connected to one end of a rotary shaft 32, and fitted to the valve casing 22 above the rotary disc 4. Fixed disk 5 is provided. The rotating disk 4 and the fixed disk 5 are the internal passage 2
A throttle unit that changes the opening of the passage area 1 is configured.
【００２１】図２に示すように、固定ディスク５には、
第１連通孔である５個の孔５１、５２、５３、５４、５
５が、相互に開口面積を相違させて同一円周上に連続し
て設けられている。一方、回転ディスク４には、回転軸
３２が所定の角度回転すると第１連通孔の各孔５１、５
２、５３、５４、５５に一致して内部通路２１を介して
ガス流入口２３とガス流出部２４との連通を許容する１
個の楕円形第２連通孔４１が開設されている。As shown in FIG. 2, the fixed disk 5 includes:
Five holes 51, 52, 53, 54, 5 which are first communication holes
5 are continuously provided on the same circumference with different opening areas. On the other hand, in the rotary disc 4, when the rotary shaft 32 rotates by a predetermined angle, the holes 51, 5 of the first communication holes are formed.
Allowing communication between the gas inlet 23 and the gas outlet 24 via the internal passage 21 in conformity with 2, 53, 54, 55 1
An elliptical second communication hole 41 is provided.
【００２２】ここで、ガスバーナーの火炎が消えない程
度の最小ガス流量は、使用する燃料ガスの種類に応じて
相違する。このため、使用する燃料ガスの種類の異なる
ガス器具ごとに最小ガス流量を設定できるようにする必
要がある。The minimum gas flow rate at which the flame of the gas burner is not extinguished depends on the type of fuel gas used. Therefore, it is necessary to be able to set the minimum gas flow rate for each gas appliance that uses different types of fuel gas.
【００２３】本実施の形態では、第１連通孔の第１孔５
１とガス通路１１とを連通するパイパス通路１３を装置
本体１２に設けると共に、バイパス通路１３に最小ガス
流量を設定するオリフィス１４を挿設した。In the present embodiment, the first hole 5 of the first communication hole is
A bypass passage 13 that communicates 1 with the gas passage 11 is provided in the apparatus main body 12, and an orifice 14 that sets the minimum gas flow rate is inserted in the bypass passage 13.
【００２４】そして、第２連通孔４１が第１連通孔のい
ずれの孔５１、５２、５３、５４、５５にも一致しない
と内部通路２１が閉止され、ガス通路１１への燃料ガス
の供給が停止される（図２（ａ）参照）。他方で、モー
タ３を駆動して回転ディスク４を回転させ、第２連通孔
４１を、第１連通孔５１、５２、５３、５３、５４、５
５のいずれかに一致させることで開度を変更してガス流
量が調節される。If the second communication hole 41 does not coincide with any of the first communication holes 51, 52, 53, 54, 55, the internal passage 21 is closed and the fuel gas is supplied to the gas passage 11. It is stopped (see FIG. 2 (a)). On the other hand, the motor 3 is driven to rotate the rotary disk 4 and the second communication hole 41 is moved to the first communication hole 51, 52, 53, 53, 54, 5.
The gas flow rate is adjusted by changing the opening by matching with any one of No. 5 and No. 5.
【００２５】ここで、調理者の利便性を高めるため作動
が電子制御されたガスコンロでは、ガスバーナーの火力
調節が、例えばコンロ正面の操作パネルに設けたライト
タッチスイッチによって行われる。この場合、ガスバル
ブ２は、例えば、ガスバーナーの火力を火力１から火力
５までの５段階に設定できるように制御される。Here, in the gas stove whose operation is electronically controlled to enhance the convenience for the cook, the heating power of the gas burner is adjusted by, for example, a light touch switch provided on the operation panel on the front of the stove. In this case, the gas valve 2 is controlled so that the thermal power of the gas burner can be set to five levels from thermal power 1 to thermal power 5, for example.
【００２６】本実施の形態では、ライトタッチスイッチ
を押して火力１にすると、モータ３を駆動して回転軸３
２を一方に回転させ、第２連通孔４１を第１連通孔の第
１孔５１に一致させる。この場合、ガスバーナーの火炎
が消えない程度の最小ガス流量が流れる（図２（ｂ）参
照）。In this embodiment, when the light touch switch is pressed to set the thermal power to 1, the motor 3 is driven to rotate the rotary shaft 3
2 is rotated to one side so that the second communication hole 41 is aligned with the first hole 51 of the first communication hole. In this case, the minimum gas flow rate is such that the flame of the gas burner is not extinguished (see FIG. 2 (b)).
【００２７】次に、タッチスイッチを押して火力２に設
定すると、モータ３を駆動して回転軸３２が一方に回転
させ、第２連通孔４１を、第１連通孔の第１孔５１及び
第２孔５２に一致させる。この場合、ガス通路１１への
燃料ガスの流量は、第１連通孔の第１孔５１及び第２孔
５２と第２連通孔４１とが一致する面積に応じて変更で
きる（図２（ｃ）参照）。Next, when the touch switch is pressed to set the thermal power to 2, the motor 3 is driven to rotate the rotary shaft 32 to one side, and the second communication hole 41 is connected to the first hole 51 and the second communication hole of the first communication hole. Match the holes 52. In this case, the flow rate of the fuel gas to the gas passage 11 can be changed according to the area where the first hole 51 and the second hole 52 of the first communication hole and the second communication hole 41 coincide (FIG. 2 (c)). reference).
【００２８】そして、火力３で、第２連通孔４１を第１
連通孔の第２孔５２及び第３孔５３に（図２（ｄ）参
照）、火力４では第２連通孔４１を第１連通孔の第３孔
５３及び第４孔５４に（図２（ｅ）参照）、火力５で
は、第２連通孔４１を第１連通孔の第４孔５４及び第５
孔５５（図２（ｆ）参照）に一致させる。この場合もま
た、第２連通孔４１が一致する第１連通孔の各孔５１乃
至５５の面積を変更することでガス流量が調節できる。Then, with the thermal power 3, the second communication hole 41 is set to the first
In the second hole 52 and the third hole 53 of the communication hole (see FIG. 2D), the second communication hole 41 is changed to the third hole 53 and the fourth hole 54 of the first communication hole (see FIG. e)), in the case of thermal power 5, the second communication hole 41 is connected to the fourth hole 54 and the fifth communication hole of the first communication hole.
It is aligned with the hole 55 (see FIG. 2 (f)). Also in this case, the gas flow rate can be adjusted by changing the area of each of the holes 51 to 55 of the first communication hole which the second communication hole 41 coincides with.
【００２９】ここで、初期状態では、ガスバルブ２の開
度（設定火力）は次のように調節されている。即ち、後
述の圧力センサ６によって、最小ガス流量（火力１）に
おけるガス通路１１の燃料ガスの圧力（以下、「二次
圧」という）と、最大ガス流量（火力５）における二次
圧とをそれぞれ検出する。Here, in the initial state, the opening degree (set thermal power) of the gas valve 2 is adjusted as follows. That is, the pressure sensor 6 described later measures the pressure of the fuel gas in the gas passage 11 at the minimum gas flow rate (thermal power 1) (hereinafter referred to as “secondary pressure”) and the secondary pressure at the maximum gas flow rate (thermal power 5). Detect each.
【００３０】これらの二次圧を４等分して火力２、火力
３及び火力４に対応する二次圧を算出し、圧力センサ６
の検出値がそれらの二次圧になるようにモータ３を駆動
して回転ディスク４を回転させてガスバルブ２の開度
（ガス流量）が調節されている。These secondary pressures are divided into four equal parts to calculate the secondary pressures corresponding to the thermal power 2, the thermal power 3 and the thermal power 4, and the pressure sensor 6
The motor 3 is driven to rotate the rotating disk 4 so that the detected values of 2) become the secondary pressures thereof, and the opening degree (gas flow rate) of the gas valve 2 is adjusted.
【００３１】この場合、調節されたモータ３の回転軸３
２の回転角を回転角検出手段３１で検出すると共に、そ
の時の各火力における回転角と二次圧とを初期値として
ガスコンロの作動を制御するマイコンに記憶させてい
る。In this case, the adjusted rotating shaft 3 of the motor 3
The rotation angle of No. 2 is detected by the rotation angle detecting means 31, and the rotation angle and the secondary pressure at each heating power at that time are stored as an initial value in the microcomputer for controlling the operation of the gas stove.
【００３２】尚、確実なガスバーナーの着火のため、ガ
ス流量が最大となる火力５の位置までモータ３によって
回転軸３２を回転させて点火操作するのがよい。For reliable ignition of the gas burner, it is preferable to rotate the rotary shaft 32 by the motor 3 to the position of the thermal power 5 at which the gas flow rate is maximized and perform the ignition operation.
【００３３】また、ガス通路１１には、該ガス通路１１
内の二次圧を検出する圧力センサ６が設けられている。
圧力センサ６は、ガス通路１１から垂直方向に設けた分
岐路１１ａにシール材６１を介して挿設したロッド６２
を有し、該ロッド６２の一端に樹脂製の薄板（図示せ
ず）が連結されている。そして、ガス通路１１に燃料ガ
スを流すと、二次圧でロッド１１が上方に押され、その
時の薄板１１の歪量を該薄板に付設した歪ゲージで検出
して二次圧が検出される。Further, the gas passage 11 has the gas passage 11
A pressure sensor 6 for detecting the secondary pressure inside is provided.
The pressure sensor 6 includes a rod 62 that is inserted from a gas passage 11 into a branch passage 11 a provided in a vertical direction via a seal material 61.
And a thin resin plate (not shown) is connected to one end of the rod 62. Then, when the fuel gas is flown through the gas passage 11, the rod 11 is pushed upward by the secondary pressure, and the strain amount of the thin plate 11 at that time is detected by the strain gauge attached to the thin plate to detect the secondary pressure. .
【００３４】ところで、ガス流量制御装置１では、ガス
バルブ２の上流側における燃料ガスの元圧（以下、「一
次圧」という）が変動すると設定火力が変化する。この
場合、マイコンに記憶させた初期二次圧に一致するよう
に、圧力センサ６で検出した二次圧からフィードバック
制御してモータ３を介して回転軸３２の回転角を調節す
ることで設定火力を調節することもできるが、これで
は、次のような不具合が生じる。By the way, in the gas flow control device 1, when the source pressure of the fuel gas (hereinafter referred to as "primary pressure") on the upstream side of the gas valve 2 changes, the set thermal power changes. In this case, the set thermal power is adjusted by feedback-controlling the secondary pressure detected by the pressure sensor 6 and adjusting the rotation angle of the rotary shaft 32 via the motor 3 so as to match the initial secondary pressure stored in the microcomputer. Can be adjusted, but this causes the following problems.
【００３５】即ち、図３を参照して、ガス通路１１内の
一次圧が変動して低くなってガス通路１１内の二次圧が
低くなると（実線）、その二次圧と初期二次圧（点線）
とが一致する点Ｂから、第２連通孔４１と第１連通孔と
の一致する面積を増加させてもガスバーナーの火力は変
化しないという問題があった。That is, referring to FIG. 3, when the primary pressure in the gas passage 11 fluctuates and becomes lower, and the secondary pressure in the gas passage 11 becomes lower (solid line), the secondary pressure and the initial secondary pressure. (dotted line)
There is a problem in that the heating power of the gas burner does not change even if the area where the second communication hole 41 and the first communication hole match is increased from the point B where is matched.
【００３６】本実施の形態では、ガスバルブ２を介して
ガス通路１１に燃料ガスを流した場合に、圧力センサ６
で二次圧を検出し、該二次圧に応じてガスバルブ２の絞
り部の開度を補正することとした。In the present embodiment, when the fuel gas is flowed through the gas valve 2 to the gas passage 11, the pressure sensor 6
Then, the secondary pressure is detected, and the opening of the throttle portion of the gas valve 2 is corrected according to the secondary pressure.
【００３７】図４を参照して、ガスバルブ２の絞り部の
開度の補正について説明する。図２（ｆ）に示す最大ガ
ス流量（火力５）となる位置までモータ３を駆動して回
転ディスク４を回転させ、点火操作を行う。その際、圧
力センサ６でガス通路１１内の二次圧を検出する。The correction of the opening of the throttle of the gas valve 2 will be described with reference to FIG. The motor 3 is driven to rotate the rotating disk 4 to a position where the maximum gas flow rate (thermal power 5) shown in FIG. At that time, the pressure sensor 6 detects the secondary pressure in the gas passage 11.
【００３８】例えば、一次圧の低下により圧力センサ６
で検出した二次圧が初期二次圧より低くなると（点線
１）、図２（ｂ）に示す最小ガス流量（火力１）となる
位置までモータ３を駆動して回転ディスク４を回転さ
せ、その時の二次圧を検出する。For example, when the primary pressure decreases, the pressure sensor 6
When the secondary pressure detected in step 2 becomes lower than the initial secondary pressure (dotted line 1), the motor 3 is driven to rotate the rotary disk 4 to a position where the minimum gas flow rate (thermal power 1) shown in FIG. The secondary pressure at that time is detected.
【００３９】検出した最大ガス流量及び最小ガス流量に
おける二次圧をマイコンに記憶させると共に、該マイコ
ンによってこれらの二次圧を４等分して火力２、火力３
及び火力４に対応する二次圧とその時の回転軸３２の回
転角を算出して記憶させることで開度の補正を行う。The detected secondary pressures at the maximum gas flow rate and the minimum gas flow rate are stored in a microcomputer, and these secondary pressures are divided into four equal parts by the microcomputer to generate thermal power 2 and thermal power 3.
Further, the opening degree is corrected by calculating and storing the secondary pressure corresponding to the thermal power 4 and the rotation angle of the rotating shaft 32 at that time.
【００４０】これにより、一次圧の低下により二次圧が
初期二次圧より低くなっても、最大ガス流量及び最小ガ
ス流量との間の二次圧から各段階の火力を補正するの
で、設定火力相互間の火力幅が均等になる。As a result, even if the secondary pressure becomes lower than the initial secondary pressure due to the decrease in the primary pressure, the thermal power at each stage is corrected from the secondary pressure between the maximum gas flow rate and the minimum gas flow rate. The width of firepower between firepower becomes even.
【００４１】他方で、例えば一次圧の上昇により、圧力
センサ６で検出した二次圧が初期二次圧より高くなった
場合（点線２）、この二次圧に基づいて補正したので
は、特に火力５での火力が必要以上に大きくなる場合が
ある。On the other hand, when the secondary pressure detected by the pressure sensor 6 becomes higher than the initial secondary pressure (dotted line 2) due to, for example, the increase of the primary pressure, the correction is made based on this secondary pressure. The thermal power at thermal power 5 may become larger than necessary.
【００４２】この場合、図２（ｂ）に示す最小ガス流量
（火力１）となる位置までモータ３を駆動して回転ディ
スク４を回転させ、その時の二次圧を検出する。In this case, the motor 3 is driven to rotate the rotary disk 4 to a position where the minimum gas flow rate (thermal power 1) shown in FIG. 2B is reached, and the secondary pressure at that time is detected.
【００４３】検出した最小ガス流量における二次圧と最
大ガス流量における初期二次圧とをマイコンに記憶させ
ると共に、該マイコンによってこれらの二次圧を４等分
して火力２、火力３及び火力４に対応する二次圧とその
時の回転軸３２の回転角を算出して記憶させることで開
度の補正を行う。これにより、図４に示す領域Ｂを使用
しないこでガスバーナーの火力が必要以上に大きくなら
ない。The secondary pressure at the detected minimum gas flow rate and the initial secondary pressure at the maximum gas flow rate are stored in the microcomputer, and the secondary pressure is divided into four equal parts by the microcomputer and the thermal power 2, thermal power 3 and thermal power are calculated. The opening degree is corrected by calculating and storing the secondary pressure corresponding to 4 and the rotation angle of the rotary shaft 32 at that time. As a result, the heating power of the gas burner does not become unnecessarily large by not using the region B shown in FIG.
【００４４】また、本実施の形態のガス流量制御装置１
では、火力調節時に、補正したデータに基づいてモータ
３の回転軸３２の回転角を制御するだけであるので、火
力調節する毎に、圧力センサ６の検出値からモータ３の
回転軸３２の回転角を算出する処理と、モータ３の駆動
制御処理とを同時に行うものに比べてＣＰＵに負荷が加
わらない。Further, the gas flow rate control device 1 of the present embodiment
Then, since only the rotation angle of the rotary shaft 32 of the motor 3 is controlled based on the corrected data when the thermal power is adjusted, the rotation of the rotary shaft 32 of the motor 3 is changed from the detection value of the pressure sensor 6 each time the thermal power is adjusted. The load is not added to the CPU as compared with the case where the processing for calculating the angle and the drive control processing for the motor 3 are performed simultaneously.
【００４５】尚、ガスバーナーの点火操作時に、圧力セ
ンサ６で検出した二次圧が、所定の圧力範囲から外れて
いると、マイコンによって圧力センサ６の故障を判断
し、それを警告するようにしてもよい。When the secondary pressure detected by the pressure sensor 6 is out of the predetermined pressure range during the ignition operation of the gas burner, the microcomputer determines that the pressure sensor 6 is out of order and issues a warning. May be.
【００４６】また、図１に示すように、圧力センサ６の
下流側のガス通路１１に電磁開閉弁７を設けてもよい。
この場合、ガスバーナーを消火する際に、該電磁開閉弁
７を閉弁した後、ガスバルブ２とを閉止してガス通路を
密閉し、その時の圧力センサ６による圧力低下速度を検
出するようにすれば、圧力センサ６等からのガス漏れの
発生が判断できてよい。Further, as shown in FIG. 1, an electromagnetic opening / closing valve 7 may be provided in the gas passage 11 on the downstream side of the pressure sensor 6.
In this case, when the gas burner is extinguished, after closing the electromagnetic on-off valve 7, the gas valve 2 is closed to seal the gas passage, and the pressure decrease rate by the pressure sensor 6 at that time may be detected. For example, it may be possible to determine the occurrence of gas leakage from the pressure sensor 6 or the like.
【００４７】尚、本実施の形態では、圧力センサ６の下
流側のガス通路１１に電磁安全弁７を設けたが、これに
限定されるのではなく、例えば、図５に示すように電磁
安全弁に変えて公知のセーフティバルブ８を設けてもよ
い。In the present embodiment, the electromagnetic safety valve 7 is provided in the gas passage 11 on the downstream side of the pressure sensor 6, but the present invention is not limited to this. For example, as shown in FIG. A publicly known safety valve 8 may be provided instead.
【００４８】また、本実施の形態では、圧力センサ６の
下流側のガス通路１１に電磁安全弁７を設けると共に、
圧力センサ６の上流側にガスバルブ２を設けたが、これ
に限定されるものではなく、図６に示すようにガスバル
ブ２の上流側に電磁安全弁７を設けてもよい。Further, in the present embodiment, the electromagnetic safety valve 7 is provided in the gas passage 11 on the downstream side of the pressure sensor 6, and
Although the gas valve 2 is provided on the upstream side of the pressure sensor 6, the present invention is not limited to this, and the electromagnetic safety valve 7 may be provided on the upstream side of the gas valve 2 as shown in FIG.
【００４９】また、図６に示すように、回転軸の回転を
制限するストッパ９を設けてもよい。Further, as shown in FIG. 6, a stopper 9 for limiting the rotation of the rotary shaft may be provided.
【００５０】[0050]
【発明の効果】以上説明したように、本発明のガス流量
制御装置では、演算処理能力の高いＣＰＵを必要とせ
ず、その上、一次圧が変化した場合でもガスバーナーの
設定火力相互間の火力幅を均等にできるという効果を奏
する。As described above, the gas flow rate control device of the present invention does not require a CPU having a high calculation processing capacity, and moreover, even if the primary pressure changes, the thermal power between the set thermal powers of the gas burner is increased. The effect is that the width can be made uniform.
【図１】本発明のガス流量制御装置を説明する断面図FIG. 1 is a sectional view illustrating a gas flow rate control device of the present invention.
【図２】（ａ）乃至（ｆ）は、ガスバルブによる流量調
節を説明する図2A to 2F are views for explaining flow rate adjustment by a gas valve.
【図３】一次圧が変動したときのガス流量調節を説明す
るグラフFIG. 3 is a graph illustrating gas flow rate adjustment when the primary pressure fluctuates.
【図４】本発明のガス流量制御装置による設定火力の補
正を説明するグラフFIG. 4 is a graph illustrating correction of set thermal power by the gas flow rate control device of the present invention.
【図５】他の実施の形態にかかるガス流量制御装置を説
明する断面図FIG. 5 is a sectional view illustrating a gas flow rate control device according to another embodiment.
【図６】他の実施の形態にかかるガス流量制御装置を説
明する断面図FIG. 6 is a sectional view illustrating a gas flow rate control device according to another embodiment.
【図７】他の実施の形態にかかるガス流量制御装置を説
明する断面図FIG. 7 is a cross-sectional view illustrating a gas flow rate control device according to another embodiment.
１ ガス流量制御装置 １１ ガス通路 ２ ガスバルブ ４ 回転ディスク ５ 固定ディスク ６ 圧力センサ 1 Gas flow controller 11 gas passages 2 gas valves 4 rotating discs 5 fixed disk 6 Pressure sensor
Claims (6)
ガス噴射ノズルへの燃料ガスのガス流量を調節する流量
調節手段と、該流量調節手段の下流側における燃料ガス
の二次圧を検出する二次圧検出手段とを設け、 該流量調節手段は、ガス通路の開度を変更してガスバー
ナーの設定火力を定める最小ガス流量から最大ガス流量
までのガス流量に対応する二次圧を増減する絞り部を有
するガス流量制御装置において、 前記流量調節手段を介してガス通路に燃料ガスを流し、
前記二次圧検出手段によって二次圧を検出し、該検出し
た二次圧から各設定火力を定めるガス流量に対応する絞
り部の開度を補正し、補正後の絞り部の開度でガスバー
ナーの火力調節を行うことを特徴とするガス流量制御装
置。1. A flow path adjusting means for adjusting a gas flow rate of fuel gas to the gas injection nozzle in a gas passage communicating with the gas injection nozzle, and a secondary pressure of the fuel gas downstream of the flow rate adjusting means is detected. A secondary pressure detecting means is provided, and the flow rate adjusting means changes the opening degree of the gas passage to increase or decrease the secondary pressure corresponding to the gas flow rate from the minimum gas flow rate to the maximum gas flow rate that determines the set thermal power of the gas burner. In a gas flow rate control device having a throttle portion that performs, a fuel gas is caused to flow in a gas passage through the flow rate adjusting means,
The secondary pressure is detected by the secondary pressure detection means, and the opening of the throttle portion corresponding to the gas flow rate that determines each set thermal power is corrected from the detected secondary pressure, and the gas is opened at the corrected opening of the throttle portion. A gas flow rate control device, characterized in that it controls the heat power of a burner.
更して最小ガス流量及び最大ガス流量についてそれぞれ
行うことを特徴とする請求項１記載のガス流量制御装
置。2. The gas flow rate control device according to claim 1, wherein the secondary pressure is detected for each of the minimum gas flow rate and the maximum gas flow rate by changing the opening of the throttle portion.
更して最大ガス流量について行い、検出した二次圧が初
期二次圧より高くなると、該初期二次圧から絞り部の開
度を補正することを特徴とする請求項１記載のガス流量
制御装置。3. The detection of the secondary pressure is performed for the maximum gas flow rate by changing the opening of the throttle part, and when the detected secondary pressure becomes higher than the initial secondary pressure, the throttle part is changed from the initial secondary pressure. The gas flow rate control device according to claim 1, wherein the opening degree of the gas flow rate is corrected.
から外れていると前記二次圧検出手段の故障を警告する
ようにしたことを特徴とする請求項１乃至請求項３のい
ずれか１項に記載のガス流量制御装置。4. The method according to claim 1, wherein when the detected secondary pressure is out of a predetermined pressure range, a warning of the failure of the secondary pressure detecting means is issued. The gas flow rate control device according to item 1.
とを特徴とする請求項１乃至請求項４のいずれか１項に
記載のガス流量制御装置。5. The gas flow rate control device according to claim 1, wherein the flow rate control means has a closing function.
の間に開閉弁を設け、ガス噴射ノズルへの燃料ガスの供
給を停止する際、流量調節手段より前に開閉弁を閉弁
し、前記検出手段による圧力低下速度を検出するように
したことを特徴とする請求項５記載のガス流量制御装
置。6. An on-off valve is provided between the secondary pressure detecting means and the gas injection nozzle, and when the supply of fuel gas to the gas injection nozzle is stopped, the on-off valve is closed before the flow rate adjusting means. The gas flow rate control device according to claim 5, wherein the pressure decrease rate is detected by the detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002056786A JP3819307B2 (en) | 2002-03-04 | 2002-03-04 | Gas flow control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002056786A JP3819307B2 (en) | 2002-03-04 | 2002-03-04 | Gas flow control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003254534A true JP2003254534A (en) | 2003-09-10 |
| JP3819307B2 JP3819307B2 (en) | 2006-09-06 |
Family
ID=28667211
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002056786A Expired - Fee Related JP3819307B2 (en) | 2002-03-04 | 2002-03-04 | Gas flow control device |
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| Country | Link |
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| JP (1) | JP3819307B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1574769A1 (en) * | 2004-03-11 | 2005-09-14 | Rinnai Corporation | Gas cooking appliance |
| EP1582790A1 (en) * | 2004-03-11 | 2005-10-05 | Rinnai Corporation | Motor operated valve |
| EP2299156A2 (en) | 2009-09-18 | 2011-03-23 | E.G.O. ELEKTRO-GERÄTEBAU GmbH | Rotor blade, rotor blade valve and valve device |
| EP2348255A3 (en) * | 2010-01-25 | 2012-07-18 | E.G.O. Elektro-Gerätebau GmbH | Dual circuit combustion system and method for operating such a dual circuit combustion system |
| EP2500651A2 (en) | 2011-03-14 | 2012-09-19 | E.G.O. Elektro-Gerätebau GmbH | Method for controlling a gas valve system for a gas burner and gas cooker with such a gas valve system |
| JP2017156047A (en) * | 2016-03-03 | 2017-09-07 | 三浦工業株式会社 | Combustion control mechanism for gas boiler |
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| JP5960573B2 (en) | 2012-10-15 | 2016-08-02 | 株式会社ミクニ | Gas control valve and disk parts used therefor |
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2002
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1574769A1 (en) * | 2004-03-11 | 2005-09-14 | Rinnai Corporation | Gas cooking appliance |
| EP1582790A1 (en) * | 2004-03-11 | 2005-10-05 | Rinnai Corporation | Motor operated valve |
| US7168677B2 (en) | 2004-03-11 | 2007-01-30 | Rinnai Corpoartion | Motor-operated valve apparatus |
| CN100392304C (en) * | 2004-03-11 | 2008-06-04 | 林内株式会社 | Motor operated valve |
| US7628607B2 (en) | 2004-03-11 | 2009-12-08 | Rinnai Corporation | Gas cooking appliance |
| EP2299156A2 (en) | 2009-09-18 | 2011-03-23 | E.G.O. ELEKTRO-GERÄTEBAU GmbH | Rotor blade, rotor blade valve and valve device |
| DE102009047914A1 (en) | 2009-09-18 | 2011-03-31 | E.G.O. Elektro-Gerätebau GmbH | Rotor disc, rotor disc valve and valve device |
| EP2348255A3 (en) * | 2010-01-25 | 2012-07-18 | E.G.O. Elektro-Gerätebau GmbH | Dual circuit combustion system and method for operating such a dual circuit combustion system |
| EP2500651A2 (en) | 2011-03-14 | 2012-09-19 | E.G.O. Elektro-Gerätebau GmbH | Method for controlling a gas valve system for a gas burner and gas cooker with such a gas valve system |
| DE102011005511A1 (en) | 2011-03-14 | 2012-09-20 | E.G.O. Elektro-Gerätebau GmbH | Method for controlling a gas valve system for a gas burner and gas cooking appliance with a gas burner with such a gas valve system |
| DE102011005511B4 (en) * | 2011-03-14 | 2012-09-27 | E.G.O. Elektro-Gerätebau GmbH | Method for controlling a gas valve system for a gas burner and gas cooking appliance with a gas burner with such a gas valve system |
| JP2017156047A (en) * | 2016-03-03 | 2017-09-07 | 三浦工業株式会社 | Combustion control mechanism for gas boiler |
| WO2017149967A1 (en) * | 2016-03-03 | 2017-09-08 | 三浦工業株式会社 | Gas boiler combustion control mechanism |
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