JPH02118317A - Burning control device - Google Patents
Burning control deviceInfo
- Publication number
- JPH02118317A JPH02118317A JP27128088A JP27128088A JPH02118317A JP H02118317 A JPH02118317 A JP H02118317A JP 27128088 A JP27128088 A JP 27128088A JP 27128088 A JP27128088 A JP 27128088A JP H02118317 A JPH02118317 A JP H02118317A
- Authority
- JP
- Japan
- Prior art keywords
- ignition
- control
- circuits
- control circuit
- circuit
- 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
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
- F23N5/102—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using electronic means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Combustion (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、ガステープル等の様に互いに独立して点滅操
作される複数のバーナを備えたガス器具に用いる燃焼制
御装置に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a combustion control device used in a gas appliance, such as a gas staple, which is equipped with a plurality of burners that are operated on and off independently of each other.
（ロ）従来の技術
り記の様に複数のバーナを備えると共に、二ノｔらのバ
ーナに各々炎検出用の炎検出回路を備えたものでは、例
えば特公昭６０−１２５２６号公報にて示さね、る様に
、上記各バーナの中のどれか一つが失火しても全てのバ
ーナへのガス供給を停止している為、使い時手が悪いと
いう問題があった。(b) A conventional technology that includes a plurality of burners and each burner is equipped with a flame detection circuit for flame detection is not disclosed in, for example, Japanese Patent Publication No. 12526/1983. As mentioned above, even if any one of the above-mentioned burners misfires, the gas supply to all the burners is stopped, so there is a problem that it is not easy to use.
（ハ）発明が解決しようとする課題
本発明は複数のバーナの中のどれかが失火してら、安全
性を確保しながら他のバーナの使用を可能とする事を目
的とする。(c) Problems to be Solved by the Invention It is an object of the present invention to make it possible to use other burners while ensuring safety even if one of a plurality of burners misfires.
（ニ）課題を解決するための手段
本発明は上流に元電磁弁を装着すると共に、この元電磁
弁の下流を複数の分岐流路に分岐し、これら分岐流路の
下流に各々バーナを連設したガス流路と、分岐流路の途
中に装着され、かつ互いに並列接続された複数の制御用
流路と、これら制御用流路に各々装着した流量制御用開
閉弁と、バーナの燃焼炎の有無を各々検出する複数の炎
検出回路と、バーナに各々点火用の高電圧を供給する複
数の点火回路と、開閉弁、点火回路等を駆動制御する制
御回路と、少なくとも各開閉弁への通電制御を各々行う
複数の通電制御回路と、制御回路の点火回路駆動信号又
は各炎検出回路の炎有り信号により、各通電制御回路の
通電を各々行う複数の安全制御回路と成るものである。(d) Means for Solving the Problems The present invention includes installing a main solenoid valve upstream, branching the downstream side of the main solenoid valve into a plurality of branch channels, and connecting a burner to each downstream of these branch channels. A plurality of control channels installed in the middle of the branch channels and connected in parallel to each other, a flow rate control on-off valve attached to each of these control channels, and a combustion flame of the burner. a plurality of flame detection circuits that each detect the presence or absence of a burner, a plurality of ignition circuits that supply high voltage for ignition to each burner, a control circuit that drives and controls the on-off valves, ignition circuits, etc.; It consists of a plurality of energization control circuits each controlling energization, and a plurality of safety control circuits each energizing each energization control circuit in response to the ignition circuit drive signal of the control circuit or the flame presence signal of each flame detection circuit.
（ホ）作用
元電磁弁を開きバーナを点火操作する事で、制御回路は
これを検出して開閉弁を開くと同時に点火回路を作動す
ると共に、制御回路の点火回路作動信号にて安全制御回
路が通電制御回路を通電制御して、開閉弁への通電を行
い、バーナを点火制御する。そしてバーナが着火すると
、炎検出回路にてこれを検出し、この炎検出回路の炎有
り信号にて通電制御回路を継続して通電制御する。(e) By opening the operating solenoid valve and igniting the burner, the control circuit detects this and operates the ignition circuit at the same time as opening the on-off valve, and also uses the ignition circuit activation signal of the control circuit to activate the safety control circuit. controls the energization control circuit, energizes the on-off valve, and controls ignition of the burner. When the burner ignites, the flame detection circuit detects this, and the energization control circuit continues to control the energization based on the flame presence signal from the flame detection circuit.
また何らかの理由によりバーナが失火した場合には、炎
検出回路にてこれを検出し、この炎検出回路の失火信号
にて安全制御回路が通電制御回路の通電を停止し、失火
したバーナの開閉弁を閉じてガス供給を停止する。In addition, if a burner misfires for some reason, the flame detection circuit detects this, and the safety control circuit stops energizing the energization control circuit based on the flame detection circuit's misfire signal, and the open/close valve for the burner that has misfired. Close the gas supply to stop the gas supply.
（へ）実施例
本発明の実施例を先ず第１図に基づき説明すると、（１
）（２）は図示しないガステープルの天板に配置される
コンロ用バーナで、バーナヘッド（３）（４）とこれに
連結した混合管（５）（６）とから成り、上記バーナヘ
ッド（３）（４）には炎孔（７）（８）を設け、かつこ
の炎孔部には各々炎検出用の熱電対（９）（１０）及び
点火プラグ（１１）（１２）を装着している。(f) Example An example of the present invention will first be explained based on FIG.
) (2) is a stove burner placed on the top plate of a gas staple (not shown), and is composed of burner heads (3) and (4) and mixing pipes (5 and 6) connected to the burner heads (3) and (4). 3) Flame holes (7) and (8) are provided in (4), and thermocouples (9) and (10) for flame detection and spark plugs (11 and 12) are attached to these flame holes, respectively. ing.
（１３）はバルブ本体で、ガス流路（１４）を設け、こ
のガス流路の上流には元電磁弁（１５）を配設し、かつ
この元電磁弁の下流にはガスガバナ（１６）を配設して
いると共に、このガスガバナの下流より分岐流路（１７
）（１８）を分岐しかつこれらの分岐流路には各々互い
に並列接続した複数の制御用流路（１９）（１，９）・
・・、 （２０）（２０）・・・を形成している。(13) is the valve body, which is provided with a gas flow path (14), a former solenoid valve (15) is provided upstream of this gas flow path, and a gas governor (16) is installed downstream of this former solenoid valve. At the same time, a branch flow path (17
) (18), and each of these branch channels has a plurality of control channels (19) (1, 9) connected in parallel to each other.
..., (20)(20)... are formed.
又り記制御用流路（１９）（１９）・・・、 （２０）
（２０）・・・には各々電気的に駆動する流量制御用開
閉弁（２１）（２１）・・・、 （２２、）（２２）
・・・を装着していると共に、これら開閉弁の下流には
各々所定の流量に設定したオリフ【ス（２３）（２３）
・・・、 （２４）（２４）・・・を装着し、上記流
量制御用開閉弁（２１）（２１）・・・、 （２２）（
２２）・・・を選択的に開閉してガス供給量を制御する
。Control flow path (19) (19)..., (20)
(20)... are each electrically driven flow rate control on-off valves (21) (21)..., (22,) (22)
..., and downstream of these on-off valves are orifices (23) (23) each set to a predetermined flow rate.
..., (24)(24)... are installed, and the above-mentioned flow rate control on-off valves (21)(21)..., (22)(
22) Control the gas supply amount by selectively opening and closing...
（２５）はガステープルの前面等に装着される操作パネ
ルで、複数のタッチスイッチから成る点火兼火力設定ボ
タン（２６）（２６）・・・、 （２７）（２７）・・
・及び消火ボタン（２８）（２９）、ロックスイッチ（
３０）を配設していると共に、これらは制御装置（３１
）に接続している。(25) is an operation panel attached to the front of the gas stapler, and consists of multiple touch switches that serve as ignition and firepower setting buttons (26) (26)..., (27) (27)...
・And fire extinguishing button (28) (29), lock switch (
30), and these are equipped with a control device (31).
) is connected to.
そこで上記制御装置（３１）を第２図に基づき説明する
と、（３２）は商用電源（３３）に接続した直流電源回
路で、第１出力（３４）をマイクロコンピュータにて構
成し、た制御回路（３５）に接続し、第２出力（３６）
を上記ロックスイッチ（３０）の共通端子（３７）に接
続し、第３出力（３８）を通電制御回路（３９）（４０
）を介して上記流量制御用開閉弁（２１）（２１）・・
・、 （２２）（２２）・・・の駆動回路（４１）（４
１）・・・ （４２）（４２）・・・及び点火回路（４
３）（４４）、送風機（４５）に接続している。尚この
送風機へは逆流防止用のダイオード（４６）（４６）を
介している。Therefore, the above-mentioned control device (31) will be explained based on Fig. 2. (32) is a DC power supply circuit connected to a commercial power supply (33), and the first output (34) is configured by a microcomputer. (35) and the second output (36)
is connected to the common terminal (37) of the lock switch (30), and the third output (38) is connected to the energization control circuit (39) (40
) through the flow rate control on-off valves (21) (21)...
・, (22)(22)... drive circuit (41)(4
1)... (42) (42)... and ignition circuit (4
3) (44), which is connected to the blower (45). Note that diodes (46) (46) for preventing backflow are connected to this blower.
（、＋ ７ ） （＝１８ ）は各々上記熱電対（９）
（１０）ノ出力を入力し、各々一対の出力（４９）（４
９°）（５０）（５０°）を上記制御回路（３５）に出
力する炎検出回路で、その一方の出力（４９’）（５０
’）を各々ＯＲ回路にて構成する安全制御回路（５１）
（５２）の入力にも接続している。(, +7) (=18) are the above thermocouples (9)
Input the outputs of (10) and output a pair of outputs (49) and (4) respectively.
9°)(50)(50°) to the control circuit (35), one of which outputs (49')(50°).
') each constituted by an OR circuit (51)
It is also connected to the input of (52).
Ｌ２安全制御回路（５１）（５２）は、他の入力に上記
制御回路（３５）の点火回路（４３）（４４）制御用出
力（５３）（５１）を各々接続していると共に、出力（
５５）（５６）を各々上記通電制御回路（３９）（４０
）に接続している。The L2 safety control circuit (51) (52) connects the ignition circuit (43) (44) control output (53) (51) of the control circuit (35) to other inputs, respectively, and also connects the output (
55) and (56) respectively to the above-mentioned energization control circuits (39) and (40).
) is connected to.
又制御回路（３５）の出力（５７）は上記流量ｉｉ制御
用開閉弁（２１）（２１）・・・ （２２）（２２）・
・・の駆動回路（４１）（４１）・・・、 （４２）
（４２）・・・に接続し上記火力設定ボタン（２６）（
２６）・・・、 （２７）（２７）・・・・・・による
火力設定等に応じて、流量制御用開閉弁（２１）（２１
）・・・、 （２２）（２２）・・・を選択的に開閉制
御する。The output (57) of the control circuit (35) is the on-off valve (21) (21) for controlling the flow rate ii (21) (22) (22).
... drive circuit (41) (41)..., (42)
(42)... Connect to the above heat setting button (26) (
26) ..., (27) (27) ..., depending on the thermal power setting etc., the flow rate control on-off valve (21) (21
)..., (22), (22)... are selectively controlled to open and close.
そして上記点火回路（４３）（４４）の出力Ａ、Ｂは、
点火プラグ（１１）（１２）のＡ、Ｈに接続し、ロック
スイッチ（３０）のロック端子（３０’）は、制御回路
（３５）の入力（５８）に接続し、解除端子（３０″）
は、制御回路（３５）の入力（５９）、及び駆動回路（
６０）を介して上記元電磁弁（１５）に接続し、この駆
動回路は制御回路（３５）の出力にて制御する。尚（３
１）は上記操作パネルである。The outputs A and B of the ignition circuits (43) and (44) are as follows:
The lock terminal (30') of the lock switch (30) is connected to the input (58) of the control circuit (35), and the release terminal (30'') is connected to A and H of the spark plugs (11) and (12).
is the input (59) of the control circuit (35) and the drive circuit (
60) to the original solenoid valve (15), and this drive circuit is controlled by the output of the control circuit (35). Nao (3
1) is the operation panel mentioned above.
而して上記コンロ用バーナ（１）（２）の燃焼に際して
は、先ずロックスイッチ（３０）を解除端子（３０”）
に接続する事で、これを介して駆動回路（６９）に直流
電源が供給されると共に制御回路（３５）は入力（５９
）からの信号によりこれを検出している。Therefore, when burning the stove burners (1) and (2), first turn off the lock switch (30) and release terminal (30").
By connecting this to the drive circuit (69), DC power is supplied to the drive circuit (69), and the control circuit (35) is connected to the input (59).
) is detected by the signal from
次いで火力設定ボタン（２６）（２６）・・・、 （２
７）（２７）・・・の中の所望の火力のボタンをオン操
作して点火操作する事で、制御回路（３５）はこれを検
出して、出力（６１）にて元電磁弁（１５）を開くと共
に、出力（６２）にて送風機（４５）を回転し、更に点
火操作されたコンロ用バーナ（１）（２）の点火回路（
４３）（４４）を作動しかつ出力（５７）にて同じく流
量制御用開閉弁（２１）（２１）・・・、 （２２）（
２２）・・・を先ず全て開き、炎検出回路（４７）（４
８）にて着火を検出後は、設定の流量制御用開閉弁のみ
開いて燃焼を行い、一方点火回路（４３）（４４）の作
動を停止する。Next, press the heat setting button (26) (26)..., (2
7) By turning on the desired firepower button in (27)... to operate the ignition, the control circuit (35) detects this and turns on the original solenoid valve (15) at the output (61). ), the blower (45) is rotated at the output (62), and the ignition circuits (
43) (44) and the output (57) also operates the flow rate control on-off valves (21) (21)..., (22) (
22) First, open all the flame detection circuits (47) and (4).
After detecting ignition in step 8), only the set flow rate control on-off valve is opened to perform combustion, while the operation of the ignition circuits (43) and (44) is stopped.
そしてこの時上記安全制御回路（５１）（５２）は、点
火開始時には制御回路（３５）の点火回路（４３）（４
４）作動信号にて通電制御回路（３９）（４０）を通電
制御し、コンロ用バーナ（１）（２）の着火後には炎検
出回路（４７）（４８）の炎有り信号にて通電制御回路
（３９）（４０）を継続して通電制御する。At this time, the safety control circuits (51) and (52) are connected to the ignition circuits (43) and (4) of the control circuit (35) at the time of starting ignition.
4) The activation signal controls the energization of the energization control circuits (39) and (40), and after the stove burners (1 and 2) are ignited, the energization is controlled by the flame presence signal of the flame detection circuits (47 and 48). The circuits (39) and (40) are continuously energized and controlled.
一方コンロ用バーナ（１）（２）が燃焼中に風による吹
き消え、成るいは煮こぼれによる失火等により消火した
場合には、安全制御回路（５１）（５２）への炎有り信
号成るいは制御回路（３５）の点火回路（４３）（４４
）への作動信号のいずれも入力されないので、その出力
にて通電制御回路（３９）（４０）の通電出力を停止し
、流量制御用開閉弁（２１）（２１）・・・、 （２２
）（２２）・・・等への通電を停止して、バーナへのガ
ス供給を停止する。On the other hand, if the burners (1) and (2) for the stove are blown out by the wind during combustion, or if the fire is extinguished due to a misfire caused by boiling over, a flame presence signal is sent to the safety control circuit (51) (52). are the ignition circuits (43) (44) of the control circuit (35).
), the energization output of the energization control circuits (39) and (40) is stopped using the output, and the flow rate control on-off valves (21), (21)..., (22
) (22) etc., and stop the gas supply to the burner.
尚上記消火が発生した場合には、再度火力設定ボタン（
２６）（２６）・・・、 （２７）（２７）・・・を
操作する事で点火操作を行うことができ、かつ他のバー
ナを燃焼している場合には、上記消火に係わらず継続し
て使用することができる。In addition, if the above fire extinguishment occurs, press the fire power setting button (
26) If the ignition operation can be performed by operating (26)..., (27)(27)..., and if other burners are burning, the ignition will continue regardless of the extinguishment described above. and can be used.
（ト）発明の効果
本発明による構成にて、複数のバーナの中のどれかが何
らかの理由により失火しても、安全性を確保しながら他
のバーナを継続して使用することができ、使い勝手を大
幅に向上することができる。(G) Effects of the Invention With the configuration according to the present invention, even if one of the plurality of burners misfires for some reason, the other burners can continue to be used while ensuring safety, making it easy to use. can be significantly improved.
第１図は本発明による燃焼制御装置を設けたガステープ
ルの略構成図、第２図は同じく制御装置のブロック図で
ある。
（１）（２）・・・コンロ用バーナ、 （１４）・・・
ガス流路、 （１５）元電磁弁、 （１７）（１８）・
・・分岐流路、 （１９）（１９）・・・、 （２０）
（２０）・・・制御用流路、（２１）（２１）・・・、
（２２）（２２）・・・流量制御用開閉弁、（３５）
・・・制御回路、（３９）（４０）・・・通電制御回路
、（４３）（４４）・・・点火回路、（４７）（４８）
・・・炎検出回路、（５１）（５２）・・・安全制御回
路。
出願人 三洋電機株式会社（外１名）
代理人 弁理士 西野卓嗣（外１名）
第２図FIG. 1 is a schematic configuration diagram of a gas staple equipped with a combustion control device according to the present invention, and FIG. 2 is a block diagram of the same control device. (1) (2)...Burner for stove, (14)...
Gas flow path, (15) Original solenoid valve, (17) (18)・
... Branch flow path, (19) (19)..., (20)
(20)...control flow path, (21)(21)...,
(22) (22)...Opening/closing valve for flow rate control, (35)
... Control circuit, (39) (40) ... Energization control circuit, (43) (44) ... Ignition circuit, (47) (48)
... Flame detection circuit, (51) (52) ... Safety control circuit. Applicant: Sanyo Electric Co., Ltd. (1 other person) Agent: Patent attorney Takuji Nishino (1 other person) Figure 2
Claims (1)
の下流を複数の分岐流路に分岐し、これら分岐流路の下
流に各々バーナを連設したガス流路と、上記分岐流路の
途中に装着され、かつ互いに並列接続された複数の制御
用流路と、これら制御用流路に各々装着した流量制御用
開閉弁と、上記バーナの燃焼炎の有無を各々検出する複
数の炎検出回路と、上記バーナに各々点火用の高電圧を
供給する複数の点火回路と、上記開閉弁、点火回路等を
駆動制御する制御回路と、少なくとも上記各開閉弁への
通電制御を各々行う複数の通電制御回路と、上記制御回
路の点火回路駆動信号又は各炎検出回路の炎有り信号に
より、上記各通電制御回路の通電を各々行う複数の安全
制御回路とから成る燃焼制御装置。(1) An original solenoid valve is installed upstream, and the downstream side of this original solenoid valve is branched into a plurality of branch passages, and a gas passage with a burner connected to each downstream of these branch passages, and a gas passage connected to the branch flow A plurality of control passages installed in the middle of the passage and connected in parallel to each other, a flow rate control on-off valve installed in each of these control passages, and a plurality of control passages each for detecting the presence or absence of combustion flame of the burner. A flame detection circuit, a plurality of ignition circuits that supply high voltage for ignition to each of the burners, a control circuit that drives and controls the on-off valves, ignition circuits, etc., and each controls energization to at least each of the on-off valves. A combustion control device comprising a plurality of energization control circuits and a plurality of safety control circuits each energizing each of the energization control circuits in response to an ignition circuit drive signal of the control circuit or a flame presence signal of each flame detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63271280A JPH06103093B2 (en) | 1988-10-27 | 1988-10-27 | Combustion control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63271280A JPH06103093B2 (en) | 1988-10-27 | 1988-10-27 | Combustion control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02118317A true JPH02118317A (en) | 1990-05-02 |
| JPH06103093B2 JPH06103093B2 (en) | 1994-12-14 |
Family
ID=17497874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63271280A Expired - Lifetime JPH06103093B2 (en) | 1988-10-27 | 1988-10-27 | Combustion control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06103093B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH062846A (en) * | 1992-06-19 | 1994-01-11 | Rinnai Corp | Combined combustion apparatus |
| JP2016061494A (en) * | 2014-09-18 | 2016-04-25 | リンナイ株式会社 | Gas stove apparatus |
| JP2023519057A (en) * | 2019-12-11 | 2023-05-10 | イヴェコ・マギルス・アー・ゲー | CAFS system with improved air management system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5362235A (en) * | 1976-11-16 | 1978-06-03 | Gastar Corp | Safety control device for gas appliance |
| JPS5610154U (en) * | 1979-07-02 | 1981-01-28 | ||
| JPS56112450U (en) * | 1980-01-31 | 1981-08-31 | ||
| JPS59221516A (en) * | 1983-05-31 | 1984-12-13 | Matsushita Electric Ind Co Ltd | Gas stove |
| JPS60238616A (en) * | 1984-05-11 | 1985-11-27 | Hanshin Electric Co Ltd | Monitoring circuit for combustion device |
| JPS6349625A (en) * | 1986-08-20 | 1988-03-02 | Matsushita Electric Ind Co Ltd | Combustion control device |
| JPH01263417A (en) * | 1988-04-13 | 1989-10-19 | Norin Kogyosha:Goushi | Gas safety device |
-
1988
- 1988-10-27 JP JP63271280A patent/JPH06103093B2/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5362235A (en) * | 1976-11-16 | 1978-06-03 | Gastar Corp | Safety control device for gas appliance |
| JPS5610154U (en) * | 1979-07-02 | 1981-01-28 | ||
| JPS56112450U (en) * | 1980-01-31 | 1981-08-31 | ||
| JPS59221516A (en) * | 1983-05-31 | 1984-12-13 | Matsushita Electric Ind Co Ltd | Gas stove |
| JPS60238616A (en) * | 1984-05-11 | 1985-11-27 | Hanshin Electric Co Ltd | Monitoring circuit for combustion device |
| JPS6349625A (en) * | 1986-08-20 | 1988-03-02 | Matsushita Electric Ind Co Ltd | Combustion control device |
| JPH01263417A (en) * | 1988-04-13 | 1989-10-19 | Norin Kogyosha:Goushi | Gas safety device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH062846A (en) * | 1992-06-19 | 1994-01-11 | Rinnai Corp | Combined combustion apparatus |
| JP2016061494A (en) * | 2014-09-18 | 2016-04-25 | リンナイ株式会社 | Gas stove apparatus |
| JP2023519057A (en) * | 2019-12-11 | 2023-05-10 | イヴェコ・マギルス・アー・ゲー | CAFS system with improved air management system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06103093B2 (en) | 1994-12-14 |
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