JPS59100311A - Combustion controlling device of hot water supplying space heater - Google Patents

Combustion controlling device of hot water supplying space heater

Info

Publication number
JPS59100311A
JPS59100311A JP20990482A JP20990482A JPS59100311A JP S59100311 A JPS59100311 A JP S59100311A JP 20990482 A JP20990482 A JP 20990482A JP 20990482 A JP20990482 A JP 20990482A JP S59100311 A JPS59100311 A JP S59100311A
Authority
JP
Japan
Prior art keywords
water
float
relay
hot water
reed switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP20990482A
Other languages
Japanese (ja)
Inventor
Nobuo Onishi
大西 信男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP20990482A priority Critical patent/JPS59100311A/en
Publication of JPS59100311A publication Critical patent/JPS59100311A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N5/00Systems for controlling combustion
    • F23N5/24Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/245Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electrical or electromechanical means

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

PURPOSE:To contrive to normalize the combustion against the fluctuation of water pressure due to water hammering action developed during the supplying of hot water and the use of shower by a structure wherein an amplifying relay, which interlocks a water flow switch, is provided and yet the amplifying relay contains an OFF-time setting circuit. CONSTITUTION:A float 41 is shifted by the water supplied through a supply pipe 31. The float 41 contains a magnet 42 therewithin and is pushed by a spring 40, which is selected so as to allow the float 41 to shift under low water pressure. A reed switch 39 issues a signal by means of the magnet 42. When the float 41 of a water flow switch 26 vibrates due to water hammering, the reed switch 39 chatters. In spite of the chattering of the reed switch 39, the relay contact 38b, which corresponds to a relay coil 39a, does not be open, because the discharge current, which is developed by the capacitor 44 in an OFF-time setting device, flows across the relay coil 38a. When the reed switch 39 is closed, the relay coil 38a is energized again, resulting in keeping the relay contact 38b in a closed state. Consequently, the normal operation of the apparatus is resulted.

Description

【発明の詳細な説明】 産業上の利用分野 本発明はガスを燃焼させ、給湯やシャワーや暖房等を行
なう給湯暖房機の給湯、シャワーの使用時に、ウォータ
ーハンマーによる水圧の変動に対して、燃焼を正常に保
つ構成の燃焼制御装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is a method of combustion that burns gas to prevent water pressure fluctuations caused by water hammer when using a hot water heater or hot water heater for hot water supply, showering, space heating, etc. This invention relates to a combustion control device configured to maintain normal conditions.

従来例の構成とその問題点 近年、給湯器はもちろん給湯暖房機に給湯の温度制御装
置が付加され、給湯温度を自由に変えられる。このため
、給湯栓を開けると、機器に内蔵されている。給湯フロ
ースイッチが動作し、機器の燃焼が開始される。給湯温
度制御幅を広げるため低水量、低水量でも動作するよう
になっている。
Conventional configuration and its problems In recent years, hot water temperature control devices have been added to hot water heaters as well as water heaters, allowing the temperature of hot water to be changed freely. Therefore, when you open the hot water tap, it is built into the device. The hot water flow switch operates and the equipment begins to burn. In order to widen the range of hot water temperature control, it is designed to operate even at low water volumes.

一方これら機器が設置される住宅は個別住宅および集合
住宅である。
On the other hand, the houses where these devices are installed are individual houses and apartment complexes.

第1図に高架水槽による給湯システムを示す。Figure 1 shows a hot water supply system using an elevated water tank.

従来の集合住宅の給水システムは、ポンプ室4を設けそ
の内に、くみ上げポンプ6を設けていた。
A conventional water supply system for an apartment complex includes a pump room 4 and a pumping pump 6 inside the pump room 4.

地丁の水道管3より、集合住宅1の屋上に高架水槽6に
くみ上(づポンプ6により水を貯わえている。
Water is pumped from a local water pipe 3 into an elevated water tank 6 on the roof of the housing complex 1 and stored there using a pump 6.

各住宅2てカラン8を開?−j水を使用するときは、給
水営了ヲ通して、各住宅2に給水できる。高架水槽の水
位か上かると、自動的にポンプ6を動作きせて一定量以
上の水が高架水槽に貯わえられている。
Each house 2 opens Callan 8? -j When using water, water can be supplied to each residence 2 through the water supply service. When the water level in the elevated water tank rises, the pump 6 is automatically operated to store more than a certain amount of water in the elevated water tank.

しかしこのシステムでは、(1)高架水槽を作成コスト
、(2)高架水槽の維持管理のコスト、かかかるため、
第2図に示すポンプアップシステムによる給水システム
か採用されている。各住宅12でカラン18を開は水を
使用するときけ、自動的にボンプ16を動作させ水管管
13より水に圧力を加えて、集合住宅11の各住宅12
に給水している。
However, this system requires (1) the cost of creating the elevated aquarium, and (2) the cost of maintaining and managing the elevated aquarium.
A water supply system using a pump-up system as shown in Figure 2 is adopted. When each house 12 opens the bell 18 to use water, it automatically operates the pump 16 and applies pressure to the water from the water pipe 13.
Water is being supplied to

しかし、このシステムでは、建築コストが安い反面、高
層の住宅に給水する場合は、高い圧力が必要、1階、2
階の住宅に給水する場合は、それほど高い圧力を必要と
しないので、圧力変動が大きいため、ウォーターハンマ
ーが発生しやすく使い勝手が悪い短点がある。が建築コ
ストが安いということが集合住宅に採用されている。
However, while this system has low construction costs, it requires high pressure when supplying water to high-rise residential buildings.
When supplying water to residential buildings on the same floor, it does not require very high pressure, so the disadvantage is that water hammer tends to occur due to large pressure fluctuations, making it difficult to use. has been adopted for housing complexes because of its low construction cost.

第3図に1缶2水路の給湯暖房機のシステム図第4図に
制御回路図を示し、この動作を説明する。
FIG. 3 shows a system of a hot water heater with one can and two channels. FIG. 4 shows a control circuit diagram, and its operation will be explained.

1缶2水路の給湯暖房機21で、給湯カラン32を開(
プると、給湯フロースイッチ26が動作し、その信号が
制御回路26が動作し、機器内蔵ポンプ28が動作し、
また制御回路26により安全にガスメインバーナー23
がガス管32よりガスを供給され燃焼する。ガス燃焼制
御用電磁弁24て制御する。
Open the hot water supply switch 32 with the hot water heater 21 with 1 can and 2 channels (
When the hot water supply flow switch 26 is activated, the control circuit 26 is activated, and the built-in pump 28 is activated.
In addition, the control circuit 26 allows the gas main burner 23 to be safely operated.
is supplied with gas from the gas pipe 32 and burns. It is controlled by a solenoid valve 24 for gas combustion control.

熱交換器22は外側に暖房用水か通り、その暖房用水の
内に給湯用水を加熱する熱交換器が設けられている1缶
2水路形である。
The heat exchanger 22 is of a one-can, two-channel type in which heating water passes through the outside, and a heat exchanger for heating hot water supply water is provided within the heating water.

給水管31より水が供給され、その水は給湯フロースイ
ッチ26を通り、熱交換器22を通ると湯になり、給湯
カラン32より湯となる。
Water is supplied from a water supply pipe 31, passes through a hot water supply flow switch 26, passes through a heat exchanger 22, becomes hot water, and then becomes hot water from a hot water supply pipe 32.

今ここで、ウォーターハンマーが生じると、水圧が大幅
に変化しで、水流スイッチ26は使用中にもかかわらす
、停止の信号を発生する。
Now, when water hammer occurs, the water pressure changes significantly and the water flow switch 26 generates a stop signal even though it is in use.

水流スイッチの構造を第6図に示す。The structure of the water flow switch is shown in Figure 6.

給水管31より水が供給され流れると、フロート41か
動く。フロート41にはマグネット42が内蔵しである
。フロート41は、スプリング40て押されている。フ
ロート41け低水圧で動くよう(てスプリング4Qけ選
択されている。リードスイッチ39はフロート41に内
蔵されているマクネット42により信号を出す。一般に
、水流スイッチはベンチ、リ−あるいはオリフィスを応
用した圧力差方式かあるが、動作圧力が高く、湯温[1
]を広くするだめの低圧力方式には適ざない。
When water is supplied from the water supply pipe 31 and flows, the float 41 moves. The float 41 has a built-in magnet 42. The float 41 is pushed by a spring 40. The float 41 is selected to operate at low water pressure (the spring 4Q is selected). The reed switch 39 outputs a signal by a McNet 42 built into the float 41. Generally, the water flow switch is a bench, reed, or orifice type switch. There is a pressure difference method, but the operating pressure is high and the water temperature [1
] is not suitable for low-pressure systems that require widening.

低圧力に対応できる方式が第6図に示したような、給水
管の内にスイッチを置くことである。
A method that can cope with low pressure is to place a switch inside the water supply pipe, as shown in Figure 6.

すなわち、ウォーターハンマーか発生すると、水流スイ
ッチ26のフロート41は、その圧力変動に対して応答
するだぬ、フロート41は振動し、リードスイッチ39
けチャタリングする。
That is, when water hammer occurs, the float 41 of the water flow switch 26 responds to the pressure fluctuation, the float 41 vibrates, and the reed switch 39
chatter.

第4図の制御回路において、トランス34.整流器36
.平滑用コンデンサ37.水流スイッチのリードスイッ
チ39に増幅用リレー38で同コイル38aが直列に接
続されている。(小型のリードスイッチで大電力を開閉
することはむずかしく、コスト高になるため、増幅用リ
レーを直列に接続する。)その接点38bを通して、制
御回路36か接続されている。このため、リードスイッ
チ39がチャタリングすると、増幅用リレーがチャタリ
ングする。従ってその接点38bもチャタリンクするた
め、制御回路36の動作も動作、停止、動作をくりかえ
すため、非常に使い勝手が悪い。
In the control circuit of FIG. 4, the transformer 34. Rectifier 36
.. Smoothing capacitor 37. The coil 38a is connected in series to a reed switch 39 of the water flow switch via an amplifying relay 38. (Since it is difficult and expensive to switch on and off a large amount of power with a small reed switch, an amplifying relay is connected in series.) A control circuit 36 is connected through the contact 38b. Therefore, when the reed switch 39 chattering, the amplification relay chattering. Therefore, since the contact 38b also chatters, the operation of the control circuit 36 is repeated, starting, stopping, and starting again, making it very inconvenient to use.

ウォーターハンマー等圧力変動に対して、強い水流スイ
ッチが必要となる。
A strong water flow switch is required to withstand pressure fluctuations such as water hammer.

発明′の目的 本発明は以」二の1.J、うな従来の欠点を除去するも
ので、ウォーターハンマーに対して強い制御装置を提供
することを目的とする。
OBJECTS OF THE INVENTION The present invention is as follows. The purpose of this invention is to provide a control device that is resistant to water hammer and eliminates the drawbacks of the conventional method.

発明の構成 この目的を達成するために本発明は、時限オフ装置を水
流スイッチに直列接続する構成とした。
DESCRIPTION OF THE INVENTION To achieve this object, the present invention has a structure in which a timed off device is connected in series with a water flow switch.

実施例の説明 以丁本発明の実施例を図に従って説明する。Description of examples Embodiments of the present invention will now be described with reference to the drawings.

第6図ば本発明を応用した回路図を示す。FIG. 6 shows a circuit diagram to which the present invention is applied.

トランス34.整流器36.制御回路36.平滑用コン
デンサ37.水流スイッチ内蔵リードスイッチ39.増
幅用リレーコイル38a、同接点38bである。(第4
図と同一である。)今ウォーターハンマーで水流スイッ
チ26のフロート41が振動すると、リードスイッチ3
9かチャタリンクする。しかし、時限オフ装置のコンデ
ンサ44により、リレーコイル38aに放電電流が流れ
、そのリレー接点38bけ開にならなヘリードスイッチ
39が閉じると、リレーコイル38&に再び通電される
ため、リレー接点38bは閉し続けている。
Trance 34. Rectifier 36. Control circuit 36. Smoothing capacitor 37. Reed switch with built-in water flow switch 39. They are an amplification relay coil 38a and a contact point 38b. (4th
Same as figure. ) Now, when the float 41 of the water flow switch 26 vibrates with the water hammer, the reed switch 3
9 or chat link. However, due to the capacitor 44 of the timed off device, a discharge current flows through the relay coil 38a, and when the relay contact 38b is opened and the heliad switch 39 is closed, the relay coil 38& is energized again, so the relay contact 38b is closed. It continues to be closed.

第7図にもう一つの実施例を示す。Another embodiment is shown in FIG.

トランス34.整流器36.制御回路36.平骨用コン
デンザ3了、増幅用リレーコイル38a。
Trance 34. Rectifier 36. Control circuit 36. Condenser 3 for flat bones, relay coil 38a for amplification.

同接点38bである。(第4図と同一である。)本発明
の時限オフ装置46である。
This is the same contact point 38b. (Same as FIG. 4.) This is the timed off device 46 of the present invention.

抵抗46,47,48,49,60,61,52゜63
、ダイオード64.コンデンサ66、電圧比較器56.
トランジスタ67である。
Resistance 46, 47, 48, 49, 60, 61, 52°63
, diode 64. Capacitor 66, voltage comparator 56.
This is the transistor 67.

抵抗46と47を直列接続し、抵抗46の他端をプラス
、抵抗4γの他端をアースに接続し、その接続点と電圧
比較器56の反転入力と接続する。
Resistors 46 and 47 are connected in series, the other end of resistor 46 is connected to plus, the other end of resistor 4γ is connected to ground, and their connection point is connected to the inverting input of voltage comparator 56.

抵抗48と60を接続し、その接続点と電圧比較器66
の非反転入力と接続し、抵抗48の曲端をリードスイッ
チ39と接続し、リードスイッチ39の曲端はプラスに
接続する。又抵抗5oのfm端をアースに接続する。コ
ンデンサ66を抵抗6Qに並列接続する。ダイオード6
4と抵抗49を直列接続したものを、さらに抵抗6oに
並列接続する。電圧比・較器66の電源端子は、それぞ
れプラスと、アースに接続する。
Connect the resistors 48 and 60 and connect the connection point to the voltage comparator 66
The bent end of the resistor 48 is connected to the reed switch 39, and the bent end of the reed switch 39 is connected to the positive terminal. Also, connect the fm end of resistor 5o to ground. A capacitor 66 is connected in parallel to a resistor 6Q. diode 6
4 and resistor 49 are connected in series, which is further connected in parallel to resistor 6o. The power terminals of the voltage comparator 66 are connected to positive and ground, respectively.

抵抗61と62と63を直列接続する。抵抗61の他端
をプラス、抵抗63の他端をアースに接続する。
Resistors 61, 62, and 63 are connected in series. The other end of the resistor 61 is connected to the plus terminal, and the other end of the resistor 63 is connected to the ground.

抵抗61と52の接続点を電圧比較器66の出力上接続
し、抵抗62と63の接続点をNPN型トランジスタ6
7のベースに接続する。トランジスタ6了のコレクタは
増幅用リレーコイル38aと接続し、増幅用リレーコイ
ル382Lの他端はプラスに接続する。トランジスタ6
了のエミッタはアースと接続する。
The connection point between the resistors 61 and 52 is connected to the output of the voltage comparator 66, and the connection point between the resistors 62 and 63 is connected to the NPN transistor 6.
Connect to the base of 7. The collector of the transistor 6 is connected to the amplification relay coil 38a, and the other end of the amplification relay coil 382L is connected to the positive terminal. transistor 6
The terminal emitter is connected to ground.

今、リードスイッチ39が閉じると、コンデンサ66 
充電きれその電圧は徐々に上昇し、電圧比較器66の反
転入力電圧より高くなると、電圧比較器56の出力は、
はぼoyからほぼ51 /(52+51 )できまる電
圧まで上昇して、トランジスタ67をオフからオンにし
て、増幅用リレーコイル38aに電流を流しその接点3
8bを閉じる。この充電時定数τ1け τ1ζ56 (48X49 X50/49 (48+6
0) +48601ここで48<49<60なるよう定
数を選択するのてτ1洪65x4Bである。
Now, when reed switch 39 closes, capacitor 66
When the charging voltage gradually increases and becomes higher than the inverting input voltage of the voltage comparator 66, the output of the voltage comparator 56 becomes
The voltage rises from 0 to approximately 51/(52+51), turns the transistor 67 from off to on, and causes current to flow through the amplification relay coil 38a, which connects the contact 3.
Close 8b. This charging time constant τ1×τ1ζ56 (48×49×50/49 (48+6
0) +48601 Here, by selecting constants such that 48<49<60, τ1 Hong65x4B.

一方放電時定数τ2けリードスイッチ39が開になった
ときである。このとき、電圧比較器56の非反転入力電
圧が高い電圧より徐々に低(なり、基準の反転入力電圧
より低くなると、=電圧比較器66の出力は高い電圧か
らほぼoVになるので、トランジスタ5了をオンかオフ
にして、増幅用りL/ −−mlイル38aに電流を止
め、その接点38bを開く。この放電時定数τ2はτ2
=56X60である。
On the other hand, this is when the reed switch 39 is opened by the discharge time constant τ2. At this time, when the non-inverting input voltage of the voltage comparator 56 gradually becomes lower than the high voltage (and becomes lower than the reference inverting input voltage), the output of the voltage comparator 66 changes from the high voltage to approximately oV, so the transistor 5 The discharge time constant τ2 is τ2.
=56×60.

充電時定数τ1は短か(、放電時定数τ2は長い。Is the charging time constant τ1 short (or is the discharging time constant τ2 long?

つまり、水流スイッチ26が動作するときけ、即応答し
、水流スイッチが復帰するときは、しばらくしてから応
答する制御装置になっている。
In other words, the control device responds immediately when the water flow switch 26 is activated, and responds after a while when the water flow switch is restored.

水流スイッチ26かチャタリングした場合、復帰したと
同じ状態から、再動作の状態になるので、時限オフ時間
内のチャタリング時間ならば、機器は正常に動作する。
If the water flow switch 26 chattering, it will be restarted from the same state as when it was restored, so if the chattering time is within the timed off time, the device will operate normally.

なお、給湯暖房機としているか暖房のかわりに間接式風
呂釜を有する給湯機に応用してもさしっかえない。
In addition, it may be applied to a hot water heater or a water heater having an indirect bath pot instead of heating.

発明の詳細 な説明したように本発明の給湯暖房機の燃焼制御装置は
次のような効果を有する。
As described in detail, the combustion control device for a hot water heater according to the present invention has the following effects.

(1)水流スイッチを停止状態にして後、燃焼が停止す
るまで、短時間の遅れがあるが、1缶2水路式熱交換器
を有するため、暖房湯水か制御されながら加熱されるの
で、安全上すぐれている。
(1) After the water flow switch is turned off, there is a short delay until combustion stops, but since each can has a two-channel heat exchanger, the heating water is heated in a controlled manner, so it is safe. It's excellent.

(2)構成部品が少な(、安価である。(2) Fewer components (and cheaper).

(3)  構成が簡単であり、時限オフ時間を自由にえ
らへる。
(3) The configuration is simple and the time-limited off time can be freely selected.

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

第1図は従来の集合住宅の高架水槽式給水システムの構
成図、第2図は従来の集合住宅のポンプアップ式給水シ
ステムの構成図、第3図は従来の1缶2水路式熱交換器
を有する給湯暖房機の構成図、第4図は同制御回路図、
第6図は同水流スイッチの断面図、第6図は本発明の一
実施例を示す制御回路図、第7図は本発明の他の実施例
を示す制御回路図である。 22・・・・・・1缶2水路式熱交換機、26・・・・
・・水流スイッチ、38・・・・・・増幅用リレー、3
a&・・・・・・コイル、38b・・・・・・同接点、
39・・・・・・リードスイッチ、41・・・・・・フ
ロート、42・・・・・・マグネット、44・・・・・
・コンデンサ、46・・・・・・時限オフ回路。 代理人の氏名 弁理士 中 尾 敏 男 はか1名第 
3 図 第5図
Figure 1 is a configuration diagram of a conventional elevated water tank water supply system for an apartment complex, Figure 2 is a diagram of a conventional pump-up water supply system for an apartment complex, and Figure 3 is a conventional one-can two-channel heat exchanger. Fig. 4 is the control circuit diagram of a water heater and hot water heater.
FIG. 6 is a sectional view of the same water flow switch, FIG. 6 is a control circuit diagram showing one embodiment of the present invention, and FIG. 7 is a control circuit diagram showing another embodiment of the present invention. 22... 1 can 2 channel heat exchanger, 26...
...Water flow switch, 38...Amplification relay, 3
a&... Coil, 38b... Same contact,
39...Reed switch, 41...Float, 42...Magnet, 44...
・Capacitor, 46...Timed off circuit. Name of agent: Patent attorney Toshio Nakao Haka 1st person
3 Figure 5

Claims (1)

【特許請求の範囲】[Claims] 1缶2水路式熱交換器と、マクネットを組み込んだフロ
ートと、リードスイッチからなる水流スイッチと、前記
水流スイッチと連動する増幅用リレー吉を備え、前記増
幅用リレーに時限オフ回路を有する構成とした給湯暖房
機の燃焼制御装置。
A configuration comprising a one-can two-channel heat exchanger, a float incorporating a McNet, a water flow switch consisting of a reed switch, and an amplification relay that operates in conjunction with the water flow switch, and the amplification relay has a time-limited off circuit. Combustion control device for hot water heaters.
JP20990482A 1982-11-29 1982-11-29 Combustion controlling device of hot water supplying space heater Pending JPS59100311A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20990482A JPS59100311A (en) 1982-11-29 1982-11-29 Combustion controlling device of hot water supplying space heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20990482A JPS59100311A (en) 1982-11-29 1982-11-29 Combustion controlling device of hot water supplying space heater

Publications (1)

Publication Number Publication Date
JPS59100311A true JPS59100311A (en) 1984-06-09

Family

ID=16580569

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20990482A Pending JPS59100311A (en) 1982-11-29 1982-11-29 Combustion controlling device of hot water supplying space heater

Country Status (1)

Country Link
JP (1) JPS59100311A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS514291A (en) * 1975-02-07 1976-01-14 Mitsui Toatsu Chemicals FUENOORUJUSHINYUDAKUEKINO SEIZOHOHO
JPS518627A (en) * 1974-07-11 1976-01-23 Sanyo Electric Co Nenshokino seigyosochi
JPS5114661U (en) * 1974-07-18 1976-02-03
JPS5241940B2 (en) * 1972-06-07 1977-10-21
JPS5642749B2 (en) * 1976-04-28 1981-10-07
JPS5737627A (en) * 1980-10-06 1982-03-02 Yamatake Honeywell Co Ltd Remote combustion control apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5241940B2 (en) * 1972-06-07 1977-10-21
JPS518627A (en) * 1974-07-11 1976-01-23 Sanyo Electric Co Nenshokino seigyosochi
JPS5114661U (en) * 1974-07-18 1976-02-03
JPS514291A (en) * 1975-02-07 1976-01-14 Mitsui Toatsu Chemicals FUENOORUJUSHINYUDAKUEKINO SEIZOHOHO
JPS5642749B2 (en) * 1976-04-28 1981-10-07
JPS5737627A (en) * 1980-10-06 1982-03-02 Yamatake Honeywell Co Ltd Remote combustion control apparatus

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