JPS625545Y2 - - Google Patents
Info
- Publication number
- JPS625545Y2 JPS625545Y2 JP15503079U JP15503079U JPS625545Y2 JP S625545 Y2 JPS625545 Y2 JP S625545Y2 JP 15503079 U JP15503079 U JP 15503079U JP 15503079 U JP15503079 U JP 15503079U JP S625545 Y2 JPS625545 Y2 JP S625545Y2
- Authority
- JP
- Japan
- Prior art keywords
- contact
- relay
- terminal
- combustion
- ignition
- 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.)
- Expired
Links
- 238000002485 combustion reaction Methods 0.000 claims description 54
- 239000000446 fuel Substances 0.000 claims description 33
- 239000004071 soot Substances 0.000 description 10
- 238000013021 overheating Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Feeding And Controlling Fuel (AREA)
- Control Of Combustion (AREA)
Description
本考案は石油等を燃焼させ、その熱を熱交換
し、温風として取り出す温風暖房器に係り、とく
にその燃焼制御回路に関する。
この種、温風暖房器では、ルームサーモを取付
け、室温に応じて燃料の供給量を自動的に変え、
室温を一定に保つ自動運転が広く行われている。
この自動運転は、室温が低い場合は、温風暖房器
を強運転状態に制御し、また室温が高くなると、
弱運転状態に自動的に切換えるものである。この
場合、一般には室温がある程度以上高くなつて
も、燃焼を停止させることはせず、弱運転状態を
継続する。しかし、最近の石油事情等から灯油の
節約が叫ばれており、無駄な暖房をしないという
意味から、上記自動運転時でも、ある条件のもと
で停止制御することが考えられた。即ち、ルーム
サーモによる自動運転をしていて、燃料の供給量
が最少の弱運転状態でも、まだ室温が上昇するよ
うな場合は、ストーブを一旦消火にし、室温が低
下したら再び燃焼させるといつた方法がとられる
様になつた。
この場合、新たな問題としてすすの発生が考え
られる。すすは着火後の炎の立上り時に主に発生
するので、燃焼と消火とを繰返す上記OFF制御
を採用した場合は、以前の強−弱制御の場合より
も着火の回数が多くなり、すすの発生も多くな
る。このすすはバーナに付着すると、燃焼に悪影
響を及ぼすので、出来るだけ少なく抑える必要が
ある。
ここで同一バーナを用いて燃焼空気送風量を一
定とする同一条件下において第1図により、強流
量、中流量、小流量で着火した場合の、燃焼立上
り時におけるすすの発生量を比較する。第1図a
の強流量の場合は、同図bで示す中流量及び同図
cで示す弱流量の場合に比べ、はるかに多量のす
すが発生することが解る。従来は一般に着火後の
燃焼立上りを早めるために強流量で着火していた
が、前述の如く着火回数が増加する場合は、すす
が多量に発生するため好ましくない。すすの発生
が一番少ないのは、図から明かな如く中流量で着
火した場合である。またこの中流量で着火した場
合の燃焼立上り時間、即ち、着火から対流用モー
タが起動するまでに要する時間は、次表で示す如
く、強流量の場合とほとんど差がない。このこと
から、中流量で着火するのが最も好ましい。
The present invention relates to a hot air heater that burns petroleum or the like, exchanges the heat, and extracts hot air, and particularly relates to a combustion control circuit thereof. This type of hot air heater is equipped with a room thermostat that automatically changes the amount of fuel supplied according to the room temperature.
Automated operation that maintains a constant room temperature is widely used.
This automatic operation controls the warm air heater to operate at high speed when the room temperature is low, and when the room temperature becomes high.
It automatically switches to a weak operating state. In this case, even if the room temperature rises above a certain level, combustion is generally not stopped and a weak operating state is continued. However, due to the recent oil situation, there has been a call to conserve kerosene, and in order to avoid unnecessary heating, it has been considered to perform stop control under certain conditions even during automatic operation. In other words, if you are using automatic operation using a room thermostat and the room temperature still rises even in the weak mode with the minimum amount of fuel supplied, you can turn off the stove and turn it back on once the room temperature has cooled down. It seems that a method has been adopted. In this case, a new problem may be the generation of soot. Soot is mainly generated when the flame rises after ignition, so if the above-mentioned OFF control, which repeats combustion and extinguishing, is adopted, the number of ignitions will be greater than the previous strong-weak control, and soot will be generated. There will also be more. If this soot adheres to the burner, it will have a negative effect on combustion, so it is necessary to keep it as low as possible. Here, the amount of soot generated at the start of combustion will be compared in the case of ignition at a strong flow rate, a medium flow rate, and a small flow rate, as shown in FIG. 1, under the same conditions with the same burner and a constant combustion air blow rate. Figure 1a
It can be seen that in the case of a strong flow rate of , a much larger amount of soot is generated than in the case of a medium flow rate shown in Figure b and a weak flow rate shown in Figure c. Conventionally, ignition was generally carried out at a strong flow rate in order to hasten the start of combustion after ignition, but if the number of ignitions increases as described above, this is undesirable because a large amount of soot is generated. As is clear from the figure, the least amount of soot is generated when ignition occurs at a medium flow rate. Furthermore, the combustion start-up time when ignited at this medium flow rate, that is, the time required from ignition until the convection motor is started, is almost the same as that at a strong flow rate, as shown in the following table. For this reason, it is most preferable to ignite at a medium flow rate.
【表】
本考案の目的は、燃焼切換スイツチをいかなる
運転位置に操作しても、着火に際しては必ず中流
量となるように制御することにより、着火時にお
けるすすの発生が少なく、しかも燃焼の立上りも
比較的速い温風暖房器を提供することにある。
以下本考案を図面に示す一実施例を参照して説
明する。
第2図に於て、Pは電源端子で、その一方は電
流ヒユーズF1を介して線路Rに接続し、また他
方の端子は線路Nに接続しており、これら線R,
N間に単相交流電源を供給する。SW1,SW2,
SW3,SW4,SW5は第3図で示す燃焼切換スイツ
チSWの接点で、一つの運転操作つまみSWxの捻
回角度に連動して切換動作する。またS1,S2,
S3,S4は図示しない節約スイツチの互いに連動す
る接点である。上記接点SW1は「弱」「中」「強」
「自」の運転指令のいずれかにセツトした時閉じ
る端子bと、「消火」側にセツトした時閉じる端
子aを有する。この接点SW1の共通端子側は、過
熱防止装置10を構成する温度ヒユーズF2及び
サーモスタツトT1を直列に介して線路Rに接続
する。ここで、上記温度ヒユーズF2及びサーモ
スタツトT1は図示しない暖房器本体(以下器体
と呼ぶ)が一定温度以上になると、溶断又は開放
動作して電路をしや断するものである。また、運
転指令回路用の端子bは、節約スイツチ接点S1の
切換操作時閉じる端子a側、自動起動用タイマー
接点TS1の端子a側、後述する点火用リレーRL3
のa接点r3−2、制御リレーRL2及び後述する保
持リレーRL5のa接点r5−2を介して線路Nに接
続する。また、前記節約スイツチ接点S1の入操作
時閉じる端子bは、タイマー接点TS−1との間
に後述するルームサーモリレーThのa接点Th−
2を接続すると共に、他方は節約運転表示ランプ
PL2及び節約スイツチ接点S4の入操作時閉じる端
子b側を介して前記保持リレー接点r5−2と直列
接続する。尚、自動起動用タイマーTMはタイマ
使用表示ランプPL3を並列に有し、前記タイマー
接点TS−1の端子bと保持リレー接点r5−2間
に直列接続する。また前記接点SW1の端子b側
は、油切れ検出用フロートスイツチSW6にも接続
し、更に油切れ表示ランプPL1を介して保持リレ
ー接点r5−2に直列接続する。制御リレーRL2は
後述する点火ヒータTHに動作指令を与えるもの
で、前記切換スイツチSW1の接点bへの切換操
作、即ちいずれかへの運転指令により、点火用リ
レーRL3が動作中であることを条件に励磁され、
点火用リレー接点r3−2と並列接続したa接点r2
−2により自己保持する。
上記保持リレーRL5は前記接点SW1の「消火」
側端子aと線路Nとの間に接続する。また点火用
リレーRL3は一端を同じく接点SW1の「消火」側
端子aに接続すると共に、これと並列に、保持リ
レーRL5のa接点r5−1、リセツトリレーRL1の
a接点r1−2及び耐震自動消火装置の動作時開接
点SW7とによる直列回路を設け、保持回路を構成
する。また他端はサーモスタツトT2の低温時閉
成する端子(以下これを低温端子と呼ぶ)a側を
介して線路Nに接続する。サーモスタツトT2は
図示しない燃焼部、即ちバーナ温度に感応するも
ので、設定温度以下の時は上記低温端子a側が、
また以上の時は高温端子b側が閉成する。従つて
点火用リレーRL3は切換スイツチ接点SW1を消火
側に操作した時、バーナ温度が設定値以下である
ことを条件に励磁され、保持する。
前記リセツトリレーRL1は、その一端を上記点
火用リレーRL3のa接点r3−4を介して線路Rに
接続すると共に、これと並列に接点r1−1を設
け、自己保持回路を構成する。また他端は線路N
に接続する。従つてリセツトリレーRL1は前記点
火用リレーRL3が動作中であることを条件に励磁
され自己保持する。r3−3は前記点火用リレー
RL3の切換接点で、その消勢時閉成する端子aは
リセツトリレーRL1のa接点r1−1を介して線路
Rに接続する。また動作時閉成する端子bは前記
した点火用リレー接点r3−2を介して制御リレー
RL2に直列接続する。更に共通端子は後述する燃
焼用フアンモータM2を介して線路Nに接続す
る。また、この切換接点r3−3の消勢時閉成する
端子a側には、制御リレーRL2のa接点r2−3を
並列接続する。従つて燃焼用フアンモータM2は
上記リセツトリレー接点r1−2の閉成を条件に、
制御リレーRL2の動作、又は点火用リレーRL3の
消勢に伴つて附勢され運転される。点火装置13
を構成する点火トランスTRの1次巻線は前記制
御リレーRL2のa接点r2−1を直列に介して前記
点火用リレーRL3と並列接続する。従つて制御リ
レーRL2の動作時、点火用リレーRL3と共にバー
ナが低温であることを条件に附勢され、その2次
側の設けた点火ヒータTHを加熱する。
切換スイツチ接点SW2は「消火」「弱」「強」
「自」への運転指令時閉じる端子bを持つ。同様
に接点SW3は「中」への運転指令時閉じる端子
b、接点SW4は「強」への運転指令時閉じる端子
b、接点SW5は「自動」への運転指令時閉じる端
子bをそれぞれ有し、かつそれぞれ他の運転指令
時閉じる端子aを有する。ここで、接点SW2,
SW4の共通端子は共通接続された後、点火用リレ
ーRL3の切換接点r3−1の消勢時閉じる端子a側
を介し、また接点SW3の共通端子は直接、更に接
点SW5の共通端子は節約スイツチ接点S2の入操作
時閉じる端子a側を介して、それぞれ点火用リレ
ー接点r3−2に直列接続する。上記点火用リレー
RL3の切換接点r3−1の動作時閉じる端子bは、
接点SW3の端子bと接続し、この接点SW3のバイ
パス回路を構成する。また同切換接点r3−1の端
子aは上記節約スイツチ接点S2の切操作時閉じる
端子aとも接続する。また接点SW2の端子bは、
第1の燃料弁、例えば電磁弁Mg1を介して保持リ
レー接点r5−2に直列接続し、第1の燃料弁の附
勢回路11を構成する。また接点SW3の端子bは
第2の燃料弁、同様に電磁弁Mg2を介して前記保
持リレー接点r5−2に直列接続し、第2の燃料弁
Mg2の附勢回路12を構成する。接点SW4の端子
bは強弱切換リレーRL4を介して同じく上記接点
r5−2に直列接続する。この強弱切換リレーRL4
のa接点r4−1は前記接点SW2,SW3のb端子側
相互間に接続する。接点SW5の端子bは室温が一
定値以上になると開放するルームサーモリレー接
点Th−1及び節約スイツチ接点S3の切操作時閉
じる端子a側を介して前記強弱切換リレーRL4と
直列接続する。尚、ルームサーモリレーThは接
点SW5の端子bと保持リレー接点r5−2間に接続
しており、室温に感応して前記接点Th−1,Th
−2を開閉制御する。
これらの接続関係から点火用リレーRL3が励磁
されている点火時及び着火後の立上り時は、燃焼
切換スイツチSWが「弱」「強」「自動」のいずれ
に操作されていても、切換接点r3−1により必ず
第2の燃料弁Mg2、即ち「中」運転用の燃料弁が
開動作する。PL4は「弱」燃焼表示用の発光素
子、PL5は「中」燃焼表示用の発光素子で、これ
らはそれぞれ前記切換リレーRL4の動作時開動作
する接点(以下b接点を呼ぶ)r4−2を介して対
応する燃料弁Mg1,Mg2と並列接続する。従つて
切換リレーRL4が不動作であることを条件に、第
1の燃料弁Mg1が励磁されると「弱」燃焼表示用
の発光素子PL4が発光し、第2の燃料弁Mg2が励
磁されると「中」燃焼表示用の発光素子PL5が発
光する。PL6は「強」燃焼表示用の発光素子で、
強弱切換リレーRL4と並列接続する。従つてその
励磁に伴い、即ち後述する「強」運転状態となる
ことにより発光する。
M1は温風を生じさせるための対流用フアンモ
ータで、その弱運転端子は、前記強弱切換リレー
RL4の切換接点r4−3の動作時開放する端子a側
を介して線路Rに接続し、また強運転端子は同接
点r4−3の動作時閉成する端子b側を介して同じ
く線路Rに接続する。更に他端は前記サーモスタ
ツトT2の高温端子b側を介して線路Nに接続す
る。従つてこの対流フアンモータM1はサーモス
タツトT2の働きによりバーナ温度が設定温度以
上であれば、接点r4−3の切換状態に応じて弱又
は強運転される。
次に作用を説明する。
まず電源プラグPを図示しないコンセントに差
し込み、電流ヒユーズF1を介して線路R,N間
に電源電圧を印加する。次に第3図で示した燃焼
切換スイツチSW運転操作つまみSWxを「消火」
の位置にセツトし、接点SW1の「消火」側端子a
を閉成する。この操作により保持リレーRL5は励
磁され接点r5−1を介して自己保持し、接点r5−
2を閉成し続ける。またこの時バーナは燃焼前で
あるため当然低温状態にあり、サーモスタツト
T2は低温端子aに切換つている。従つて点火用
リレーRL3は、線路R〜過熱防止装置10〜接点
SW1の端子a〜点火用リレーRL3〜サーモスタツ
トT2の端子a〜線路Nの閉回路にて励磁され、
各接点r3−2,r3−4を閉じ、かつ接点r3−1,
r3−3を端子b側に切換える。この点火用リレー
RL3の動作により上記接点r3−4を介してリセツ
トリレーRL1を励磁させ、接点r1−2にて自己保
持させる。またこのリセツトリレーRL1の動作に
より、そのa接点r1−2が閉じ、保持接点r5−1
と共に点火用リレーRL3の保持回路を閉成してこ
れを保持させる。この操作により回路は燃焼運転
可能な状態になる。
次に燃焼切換スイツチSWの運転操作つまみ
SWxを「弱」「中」「強」「自動」のいずれかにセ
ツトし運転指令を与え、点火操作を行う。
この点火時の動作を、「自動」による運転指令
で、かつ節約スイツチを入操作して運転を開始す
る場合により、代表して説明する。
この時の燃焼切換スイツチの各接点SW1〜SW5
及び節約スイツチSの各接点S1〜S4の状態を説明
すると、SW1,SW2,SW5は共に端子b側が閉成
し、接点SW3,SW4は共に端子a側が閉成し、更
に接点S1〜S4はいずれも端子b側が閉成してい
る。またルームサーモリレーThの接点Th−1,
Th−2は室温が低いため共に閉成している。上
記接点SW1の端子b側の閉成により、線路R〜過
熱防止装置10〜接点SW1の端子b側〜節約スイ
ツチ接点S1の端子b側〜ルームサーモ接点Th−
2〜タイマー接点TS−1の端子a側〜保持中の
点火用リレーRL3の接点r3−2〜制御リレーRL2
〜保持リレー接点r5−2〜線路Nの閉回路が形成
され、制御リレーRL2を励磁し、かつ接点r2−2
により自己保持させる。また前記接点r3−2と直
列接続している点火用リレーの切換接点r3−1の
端子b側を介して第2の燃料弁Mg2の附勢回路1
2に課電し、これを開動作させて中流量で燃料を
供給する。これと同時に第2の燃料弁Mg2と並列
接続している「中」燃焼表示用の発光素子PL5を
発光させる。
また前記制御リレーRL2の動作によりその接点
r2−3が閉じ、閉成中のリセツトリレー接点n−
1を介して線路Rから燃焼用フアンモータM2に
電力を供給し、これを運転させバーナに燃焼用空
気を送る。またこれと同時に点火トランスTR
は、制御リレーRL2の接点r2−1が閉じ、サーモ
スタツトT2が低温側接点aに切換つているた
め、前記点火用リレーRL3の保持回路、即ち接点
r1−2,r5−1を介して附勢され、点火ヒータ
THを発熱させる。このため前記第2の燃料弁
Mg2の開動作に伴いバーナ内に中流量で供給され
た燃料に着火し、燃焼用空気と共に燃焼する。こ
の燃焼開始によりバーナ温度が上昇すると、サー
モスタツトT2がこれに感応し、高温端子bに切
換わる。
上記サーモスタツトT2の切換動作により、点
火トランスTRは消勢され点火動作を停止する。
また点火用リレーRL3も保持状態が解除され消勢
する。このためその接点r3−1,r3−3は端子a
側に切換り、また接点r3−2,r3−4は開放す
る。もちろんこの接点r3−2の開放によつても制
御リレーRL2の接点r2−2により、制御リレー
RL2の自己保持は維持される。また接点r3−1が
端子a側に切換ることにより、第2の燃料弁Mg2
は消勢されて閉じ、代つて第1の燃料弁Mg1の附
勢回路11に課電されこれを開放し、弱流量によ
る節約運転を行う。更にサーモスタツトT2の端
子b側への切換により対流用フアンモータM1
が、接点r4−3の端子a側を介して弱運転端子か
ら附勢され、弱運転状態となり、少量の温風を吹
き出させる。燃焼運転の初期では、室温が低いた
め、ルームサーモリレー接点Th−1は閉じてい
るが、節約スイツチ接点S2,S3が共に端子b側に
切換つているので、燃焼切換リレーRL4が励磁さ
れることはなく、弱流量による節約運転を継続す
る。
上記節約運転により室温が上昇し、ルームサー
モリレーThがこれを検出して接点Th−1,Th−
2を開くと、制御リレーRL2は、その自己保持回
路が、節約スイツチ接点S1の端子b側に切換つて
いるため、上記接点Th−2の開放により、消勢
される。また燃料弁Mg1も、接点Th−2の開放
により消勢され閉塞状態となつて燃料の供給を停
止し、消火状態にする。
一方点火用リレーRL3は保持リレー接点r5−1
により、いつでも励磁可能な状態になつている
が、バーナ温度がすぐに低下しないので、サーモ
スタツトT2の低温端子aは開のままであり、直
ぐには励磁されない。従つてその切換接点r3−3
は端子a側のままであり、前記制御リレーRL2の
消勢によつて開放した接点r2−3に代つて閉成中
のリセツトリレー接点r1−1を介し、燃焼用フア
ンモータM2の運転を継続させ、バーナ内のアフ
タブローを行い、残留ガス等を外部に排出させ
る。また対流用フアンモータM1もサーモスタツ
トT2が高温側端子b側の閉成を維持しているた
め、切換接点r4−3の端子a側を介して「弱」運
転状態を維持し、アフタブローを行つてバーナを
冷却させる。
上記アフタブローによりバーナ温度が低下し、
サーモスタツトT2が端子a側に切換わると、対
流用フアンモータM1は通電が断たれて停止す
る。また同時に点火用リレーRL3が励磁され保持
する。上記点火用リレーRL3の動作によりその切
換接点r3−3は端子b側に切換り、前記燃焼用フ
アンモータM2への通電を断ちこれを停止させ
る。またそのa接点r3−2が閉じ運転可能な状態
で待期する。従つて室温が低下して、ルームサー
モリレー接点Th−2が閉じると、再び制御リレ
ーRL2を励磁して自己保持させ、かつ点火用リレ
ーの切換接点r3−1の端子b側を介して中流量供
給用の第2の電磁弁Mg2の附勢回路12に課電
し、これを開動作させる。そして前述と同じ動作
で、点火ヒータTHを附勢し、かつ燃焼用フアン
モータM2を起動して、点火動作を行い、バーナ
温度上昇後は、点火ヒータTH及び点火用リレー
RL3を消勢し、かつ対流用フアンモータM1を起動
する。従つて再び弱流量による節約運転が行われ
る。
節約スイツチを切操作しておくと、接点S1〜S4
は全て端子a側に切換るため、燃焼中、室温が高
くなつてルームサーモリレー接点Th−1,Th−
2が開いても、消化動作することはなく、制御リ
レーRL2の自己保持及び第1の電磁弁Mg1の附勢
回路11に対する課電を継続し、弱流量による燃
焼運転を維持する。また反対に室温が低く、ルー
ムサーモリレー接点Th−1,Th−2が閉じる
と、切換接点r3−1の端子a側、節約スイツチ接
点S2の端子a側接点SW5の端子b側、上記ルーム
サーモリレー接点Th−1、及び節約スイツチ接
点S3の端子a側を介して切換リレーRL4が励磁さ
れる。従つてその切換接点r4−3を端子b側に切
換え、またそのa接点r4−1を閉成させ、更にそ
のb接点r4−2を開放する。上記a接点r4−1の
閉成により第2の燃料弁Mg2が接点SW2側から附
勢され開動作する。従つてバーナ内には第1、第
2の燃料弁Mg1,Mg2の双方から多量の燃料が供
給される。この時、前記b接点r4−2が開放して
いるので、第1、第2の燃料弁Mg1,Mg2が附勢
されても「弱」及び「中」燃焼表示用の発光素子
PL4,PL5は発光せず、強弱切換リレーRL4に並
列接続した「強」燃焼表示用の発光素子PL4のみ
が発光する。また対流用フアンモータM1は、端
子b側に切換つた接点r4−3を介して強運転端子
に通電されるため、多量の温風を室内に放出す
る。
上記説明はルームサーモリレーによる自動運転
を行う場合についてであるが、手動により「弱」
「中」「強」のいずれの運転状態にセツトしても、
点火時、燃料は常に中流量で供給される。例えば
「強」にセツトした場合、接点SW2,SW4は共に
端子b側が閉じるが、点火用リレーRL3の励磁に
より、切換接点r3−1が端子b側に切換つている
ため、上記接点SW2,SW4の状態に関係なく第2
の電磁弁Mg2のみが附勢される。もちろん点火が
完了し、点火用リレーRL3が消勢されれば、切換
接点r3−1が端子a側に切換るため上記接点
SW2,SW4の状態に応じて、第1の燃料弁Mg1を
開き、かつ切換リレーRL4を動作させて第2の燃
料弁Mg2をも開いて強燃焼状態に移行する。これ
らは「弱」及び「中」にセツトした場合も同じで
ある。
以上のように本考案によれば、燃焼切換スイツ
チを、「弱」「中」「強」「自動」のいずれにセツト
しても、点火時は必ず中流量の燃料を供給するよ
うにしたので、点火時、燃料への着火及びその立
上り時に生じるすすを低く抑えることができ、消
火と着火を繰返えす節約運転も充分実施可能であ
る。[Table] The purpose of this invention is to control the flow so that the flow rate is always medium when igniting, no matter what operating position the combustion selector switch is operated at. It also aims to provide a relatively fast hot air heater. The present invention will be described below with reference to an embodiment shown in the drawings. In FIG. 2, P is a power supply terminal, one of which is connected to the line R via the current fuse F1 , and the other terminal is connected to the line N, and these lines R,
Supply single-phase AC power between N. SW 1 , SW 2 ,
SW 3 , SW 4 , and SW 5 are the contacts of the combustion changeover switch SW shown in FIG. 3, and are switched in conjunction with the twist angle of one operation control knob SWx. Also, S 1 , S 2 ,
S 3 and S 4 are mutually interlocking contacts of a saving switch (not shown). The above contact SW 1 is "weak", "medium", "strong"
It has a terminal b that closes when set to one of the "self" operation commands, and a terminal a that closes when set to the "extinguish" side. The common terminal side of this contact SW 1 is connected to the line R via a temperature fuse F 2 and a thermostat T 1 that constitute the overheating prevention device 10 in series. Here, the temperature fuse F 2 and thermostat T 1 operate to melt or open to cut the electrical circuit when the heater body (hereinafter referred to as the body) (not shown) reaches a certain temperature or higher. In addition, the terminal b for the operation command circuit is the terminal a side that closes when the saving switch contact S 1 is switched, the terminal a side of the automatic start timer contact TS 1 , and the ignition relay RL 3 to be described later.
It is connected to the line N via the a contact r 3 -2 of the control relay RL 2 and the a contact r 5 -2 of the holding relay RL 5 , which will be described later. In addition, the terminal b that closes when the saving switch contact S1 is turned on is connected to the timer contact TS-1 and the a contact Th- of the room thermo-relay Th, which will be described later.
2 is connected, and the other one is an economical operation indicator lamp.
It is connected in series with the holding relay contact r 5 -2 through the terminal b side of PL 2 and the saving switch contact S 4 which is closed when the switch is turned on. Incidentally, the automatic start timer TM has a timer use indicator lamp PL 3 in parallel, and is connected in series between the terminal b of the timer contact TS-1 and the holding relay contact r 5 -2. The terminal b side of the contact SW 1 is also connected to an oil-out detection float switch SW 6 and further connected in series to a holding relay contact r 5 -2 via an oil-out indicator lamp PL 1 . The control relay RL 2 gives an operation command to the ignition heater TH, which will be described later, and the ignition relay RL 3 is in operation by switching operation to contact b of the changeover switch SW 1 , that is, an operation command to either one. is excited on the condition that
A contact r 2 connected in parallel with ignition relay contact r 3 -2
Self-maintained by -2. The above holding relay RL 5 is the "extinguisher" of the above contact SW 1 .
Connect between side terminal a and line N. Also, one end of the ignition relay RL 3 is connected to the "extinguishing" side terminal a of the contact SW 1 , and in parallel, the a contact r 5 -1 of the holding relay RL 5 and the a contact r of the reset relay RL 1 are connected in parallel. 1-2 and the operation open contact SW 7 of the seismic automatic fire extinguishing system to form a series circuit to form a holding circuit. The other end is connected to the line N via the terminal a of the thermostat T2 that closes when the temperature is low (hereinafter referred to as the low temperature terminal). The thermostat T2 is sensitive to the combustion part (not shown), that is, the burner temperature, and when the temperature is below the set temperature, the low temperature terminal a side is
Further, in the above case, the high temperature terminal b side is closed. Therefore, when the switch contact SW 1 is operated to the extinguishing side, the ignition relay RL 3 is energized and held on condition that the burner temperature is below the set value. The reset relay RL 1 has one end connected to the line R via the a contact r 3 -4 of the ignition relay RL 3 , and has a contact r 1 -1 in parallel thereto to form a self-holding circuit. do. Also, the other end is line N
Connect to. Therefore, the reset relay RL 1 is energized and self-maintained on the condition that the ignition relay RL 3 is in operation. r 3 -3 is the ignition relay
Terminal a, which is a switching contact of RL 3 and is closed when deenergized, is connected to line R via a contact r 1 -1 of reset relay RL 1 . Terminal b, which closes during operation, is connected to the control relay via the ignition relay contact r3-2 mentioned above.
Connect in series to RL 2 . Further, the common terminal is connected to a line N via a combustion fan motor M2 , which will be described later. Further, the a contact r 2 -3 of the control relay RL 2 is connected in parallel to the terminal a side of the switching contact r 3 -3, which is closed when deenergized. Therefore, the combustion fan motor M2 operates under the condition that the reset relay contact r1-2 is closed.
It is energized and operated in accordance with the operation of control relay RL 2 or the de-energization of ignition relay RL 3 . Ignition device 13
The primary winding of the ignition transformer TR constituting the ignition transformer TR is connected in parallel to the ignition relay RL 3 via the a contact r 2 -1 of the control relay RL 2 in series. Therefore, when the control relay RL 2 is operated, it is energized together with the ignition relay RL 3 on the condition that the burner is at a low temperature, and heats the ignition heater TH provided on the secondary side thereof. Changeover switch contact SW 2 is set to "extinguish", "weak", and "strong"
It has a terminal b that closes when an operation command is issued to the "self". Similarly, contact SW 3 has terminal b that closes when a drive command to "Medium" is issued, contact SW 4 has terminal b that closes when a drive command to "strong" is issued, and contact SW 5 has terminal b that closes when a drive command to "auto" is issued. Each has a terminal a that closes when receiving another operation command. Here, contact SW 2 ,
After the common terminals of SW 4 are connected in common, the common terminal of contact SW 3 is connected directly to the switching contact r 3 -1 of ignition relay RL 3 through the terminal a side that closes when de-energized, and the common terminal of contact SW 3 is connected directly to the switching contact r 3 -1 of ignition relay RL 3. The common terminals are connected in series to the ignition relay contacts r3-2 through the terminal a side of the saving switch contact S2 , which is closed when the switch is turned on. Above ignition relay
Terminal b of switching contact r 3 -1 of RL 3 , which closes during operation, is
It is connected to terminal b of the contact SW 3 to form a bypass circuit for this contact SW 3 . The terminal a of the switching contact r3-1 is also connected to the terminal a of the saving switch contact S2 , which is closed when it is turned off. In addition, terminal b of contact SW 2 is
The first fuel valve is connected in series to the holding relay contact r 5 -2 via a solenoid valve Mg 1 , forming an energizing circuit 11 of the first fuel valve. Further, the terminal b of the contact SW 3 is connected in series to the holding relay contact r 5 -2 via a second fuel valve, similarly a solenoid valve Mg 2 , and the second fuel valve
An energizing circuit 12 for Mg 2 is configured. Terminal b of contact SW 4 is also connected to the above contact via strong/weak switching relay RL 4 .
Connect in series to r 5 -2. This strong/weak switching relay RL 4
The a contact r 4 -1 is connected between the b terminal sides of the contacts SW 2 and SW 3 . The terminal b of the contact SW 5 is connected in series with the strength switching relay RL 4 through the room thermorelay contact Th-1, which opens when the room temperature exceeds a certain value, and the terminal a, which closes when the saving switch contact S 3 is turned off. . The room thermo-relay Th is connected between the terminal b of the contact SW 5 and the holding relay contact r 5 -2, and the contacts Th-1 and Th are connected in response to the room temperature.
-2 controls opening and closing. Due to these connections, during ignition, when ignition relay RL 3 is excited, and at startup after ignition, the switching contact is activated, regardless of whether the combustion selector switch SW is set to "weak,""strong," or "auto." r 3 −1 always opens the second fuel valve Mg 2 , that is, the fuel valve for “medium” operation. PL 4 is a light emitting element for indicating "weak" combustion, and PL 5 is a light emitting element for indicating "medium" combustion, and these are contacts (hereinafter referred to as contact b) that open when the switching relay RL 4 is operated. Connect in parallel with the corresponding fuel valves Mg 1 and Mg 2 via 4-2 . Therefore, on the condition that the switching relay RL 4 is inactive, when the first fuel valve Mg 1 is energized, the light emitting element PL 4 for indicating "weak" combustion emits light, and the second fuel valve Mg 2 When energized, the light emitting element PL 5 for indicating "medium" combustion emits light. PL 6 is a light emitting element for displaying “strong” combustion.
Connect in parallel with strong/weak switching relay RL 4 . Therefore, it emits light due to its excitation, that is, when it enters a "strong" operating state, which will be described later. M1 is a convection fan motor for generating warm air, and its weak operation terminal is connected to the above-mentioned strong/weak switching relay.
The switching contact r 4 -3 of RL 4 is connected to the line R through the terminal a side which is opened when operating, and the strong operation terminal is connected to the line R via the terminal b side which is closed when the contact r 4 -3 is operated. Connect to line R. Furthermore, the other end is connected to the line N via the high temperature terminal b side of the thermostat T2 . Therefore, if the burner temperature is higher than the set temperature by the action of the thermostat T2 , the convection fan motor M1 is operated weakly or strongly depending on the switching state of the contact R4-3 . Next, the action will be explained. First, the power plug P is inserted into an outlet (not shown), and a power supply voltage is applied between the lines R and N via the current fuse F1 . Next, turn the combustion selector switch SW operation control knob SWx shown in Figure 3 to the "extinguish" position.
position, and connect the “extinguishing” side terminal a of contact SW 1 .
Close. By this operation, holding relay RL 5 is energized and self-holds via contact r 5 -1, and contact r 5 -
Continue to close 2. Also, at this time, the burner is in a low temperature state before combustion, and the thermostat is
T2 has been switched to low temperature terminal a. Therefore, the ignition relay RL 3 connects the line R to the overheating prevention device 10 to the contact point.
Terminal a of SW 1 - ignition relay RL 3 - terminal a of thermostat T 2 - Excited in the closed circuit of line N,
Close each contact r 3 -2, r 3 -4, and contact r 3 -1,
Switch r 3 -3 to terminal b side. This ignition relay
The operation of RL 3 excites the reset relay RL 1 via the contact r 3 -4, and causes it to self-hold at the contact r 1 -2. Also, due to the operation of this reset relay RL 1 , its a contact r 1 -2 closes, and the holding contact r 5 -1
At the same time, the holding circuit of ignition relay RL 3 is closed to hold it. With this operation, the circuit becomes ready for combustion operation. Next, the operation control knob of the combustion selector switch SW.
Set SWx to ``weak'', ``medium'', ``strong'', or ``auto'', give the driving command, and perform the ignition operation. The operation at the time of ignition will be representatively explained based on the case where the operation is started with an "automatic" operation command and the saving switch is turned on. At this time, each contact of the combustion selector switch SW 1 to SW 5
To explain the states of the contacts S 1 to S 4 of the saving switch S, SW 1 , SW 2 , and SW 5 are all closed on the terminal b side, and contacts SW 3 and SW 4 are both closed on the terminal a side. Furthermore, the terminal b side of all contacts S 1 to S 4 is closed. Also, contact Th-1 of room thermo relay Th,
Th-2 is closed together because the room temperature is low. By closing the terminal b side of the contact SW 1 , the line R - the overheating prevention device 10 - the terminal b side of the contact SW 1 - the terminal b side of the saving switch contact S 1 - the room thermo contact Th-
2 ~ Terminal a side of timer contact TS-1 ~ Contact r 3 of ignition relay RL 3 -2 ~ Control relay RL 2
~ Holding relay contact r 5 -2 ~ A closed circuit of line N is formed, energizing control relay RL 2 and contact r 2 -2
to maintain self-retention. Further, the energizing circuit 1 of the second fuel valve Mg 2 is connected via the terminal b side of the switching contact r 3 -1 of the ignition relay connected in series with the contact r 3 -2.
2 and opens it to supply fuel at a medium flow rate. At the same time, the light emitting element PL 5 for indicating "medium" combustion connected in parallel with the second fuel valve Mg 2 is made to emit light. Also, due to the operation of the control relay RL 2 , its contacts
r 2 -3 is closed, reset relay contact n- is closed
Electric power is supplied from the line R to the combustion fan motor M2 via line R1, and the motor M2 is operated to send combustion air to the burner. At the same time, the ignition transformer TR
Since the contact r2-1 of the control relay RL2 is closed and the thermostat T2 is switched to the low temperature side contact a, the holding circuit of the ignition relay RL3 , that is, the contact
energized via r 1 -2, r 5 -1, ignition heater
Generates heat in TH. For this reason, the second fuel valve
As the Mg 2 opens, the fuel supplied at a medium flow rate into the burner is ignited and combusted together with the combustion air. When the burner temperature rises due to the start of combustion, the thermostat T2 responds to this and switches to the high temperature terminal b. By the switching operation of the thermostat T2 , the ignition transformer TR is deenergized and the ignition operation is stopped.
Further, the holding state of the ignition relay RL 3 is also released and deenergized. Therefore, the contacts r 3 -1 and r 3 -3 are terminals a
The contact points r 3 -2 and r 3 -4 are opened. Of course, by opening this contact r 3 -2, the contact r 2 -2 of control relay RL 2 also causes the control relay to open.
Self-retention of RL 2 is maintained. In addition, by switching the contact r 3 -1 to the terminal a side, the second fuel valve Mg 2
is deenergized and closed, and the energizing circuit 11 of the first fuel valve Mg 1 is energized to open it, thereby performing economizing operation with a weak flow rate. Furthermore, by switching the thermostat T2 to the terminal b side, the convection fan motor M1
is energized from the weak operation terminal via the terminal a side of contact r4-3 , enters the weak operation state, and blows out a small amount of hot air. At the beginning of combustion operation, room thermorelay contact Th-1 is closed because the room temperature is low, but since both saving switch contacts S2 and S3 are switched to terminal b side, combustion switching relay RL4 is energized. The system continues to operate economically with low flow rate. The room temperature rises due to the above-mentioned saving operation, and the room thermo relay Th detects this and contacts Th-1 and Th-
2, the control relay RL 2 is deenergized by the opening of the contact Th-2, since its self-holding circuit has been switched to the terminal b side of the saving switch contact S 1 . Further, the fuel valve Mg1 is also deenergized by opening of the contact Th-2 and enters a closed state, stopping the supply of fuel and entering the extinguished state. On the other hand, ignition relay RL 3 has holding relay contact r 5 -1
Therefore, it is ready to be energized at any time, but since the burner temperature does not drop immediately, the low temperature terminal a of thermostat T2 remains open and is not energized immediately. Therefore, its switching contact r 3 −3
remains on the terminal a side, and the combustion fan motor M 2 is connected to the combustion fan motor M 2 via the reset relay contact r 1 -1, which is currently closed, in place of the contact r 2 -3, which is opened due to the deenergization of the control relay RL 2. Continue to operate the burner, perform after-blow inside the burner, and discharge residual gas, etc. to the outside. Also, since the thermostat T2 of the convection fan motor M1 maintains the high temperature side terminal b side closed, the convection fan motor M1 maintains the "weak" operating state via the terminal a side of the switching contact r4-3 . Perform after blow to cool down the burner. The burner temperature decreases due to the after blow,
When the thermostat T2 is switched to the terminal a side, the convection fan motor M1 is de-energized and stops. At the same time, ignition relay RL 3 is energized and held. By the operation of the ignition relay RL 3 , its switching contact r 3 -3 is switched to the terminal b side, cutting off the current to the combustion fan motor M 2 and stopping it. Also, the a contact r3-2 is closed and ready for operation. Therefore, when the room temperature drops and the room thermo-relay contact Th-2 closes, the control relay RL 2 is energized again to self-hold, and the ignition relay is activated via the terminal b side of the switching contact r 3-1 of the ignition relay. The energizing circuit 12 of the second electromagnetic valve Mg 2 for supplying a medium flow rate is energized to open it. Then, in the same manner as described above, the ignition heater TH is energized and the combustion fan motor M2 is started to perform the ignition operation. After the burner temperature rises, the ignition heater TH and the ignition relay are activated.
Deenergize RL 3 and start convection fan motor M 1 . Therefore, economizing operation with a weak flow rate is performed again. When the saving switch is turned off, contacts S 1 to S 4
All switch to the terminal a side, so during combustion, when the room temperature rises, the room thermo relay contacts Th-1 and Th-
Even if 2 is opened, the extinguishing operation does not occur, and the self-holding of the control relay RL 2 and the application of electricity to the energizing circuit 11 of the first solenoid valve Mg 1 are continued, thereby maintaining the combustion operation with a weak flow rate. On the other hand, when the room temperature is low and the room thermorelay contacts Th-1 and Th-2 close, the terminal a side of the switching contact r3-1 , the terminal a side of the saving switch contact S2 , the terminal b side of the contact SW5 , The switching relay RL4 is energized via the room thermorelay contact Th-1 and the terminal a side of the saving switch contact S3 . Therefore, the switching contact r 4 -3 is switched to the terminal b side, the a contact r 4 -1 is closed, and the b contact r 4 -2 is opened. By closing the a-contact r 4 -1, the second fuel valve Mg 2 is energized from the contact SW 2 side and opens. Therefore, a large amount of fuel is supplied into the burner from both the first and second fuel valves Mg 1 and Mg 2 . At this time, since the b contact r 4 -2 is open, even if the first and second fuel valves Mg 1 and Mg 2 are energized, the light emitting elements for indicating "weak" and "medium" combustion are not activated.
PL 4 and PL 5 do not emit light, and only the light emitting element PL 4 for indicating "strong" combustion connected in parallel to the strong/weak switching relay RL 4 emits light. Further, since the convection fan motor M1 is energized to the strong operation terminal via the contact r4-3 switched to the terminal b side, a large amount of hot air is discharged into the room. The above explanation is for automatic operation using a room thermo relay;
No matter which operating state is set to ``medium'' or ``strong,''
During ignition, fuel is always supplied at a medium flow rate. For example, when set to "strong", contacts SW 2 and SW 4 are both closed on the terminal b side, but switching contact r 3 -1 is switched to the terminal b side due to the excitation of ignition relay RL 3 , so the above contact Regardless of the status of SW 2 and SW 4 , the second
Only the solenoid valve Mg 2 is energized. Of course, when the ignition is completed and the ignition relay RL 3 is deenergized, the switching contact r 3 -1 switches to the terminal a side, so the above contact
Depending on the states of SW 2 and SW 4 , the first fuel valve Mg 1 is opened, and the switching relay RL 4 is operated to open the second fuel valve Mg 2 as well, thereby transitioning to a strong combustion state. These are the same when set to "weak" and "medium". As described above, according to the present invention, regardless of whether the combustion selector switch is set to "weak,""medium,""strong," or "automatic," a medium flow rate of fuel is always supplied at the time of ignition. It is possible to suppress the amount of soot generated during ignition, ignition of the fuel, and its rise, and it is also possible to carry out economical operation by repeating extinguishing and ignition.
第1図a,b,cは強、中、弱の各流量で着火
させた場合のそれぞれのすすの発生状況を経過時
間との関連で示す特性図、第2図は本考案による
温風暖房器の一実施例を示す回路図、第3図は本
考案に用いる燃焼切換スイツチの操作銘板部を示
す正面図である。
SW……燃焼切換スイツチ、SW2……他方の燃
焼切換スイツチ接点、SW3……一方の燃焼切換ス
イツチ接点、RL2……制御リレー、RL3……点火
用リレー、r3−1……切換接点、Mg1,Mg2……
燃料弁、11,12……燃料弁附勢回路、13…
…点火装置、M1……燃焼用フアンモータ、T2…
…サーモスタツト。
Figure 1 a, b, and c are characteristic diagrams showing the soot generation status in relation to elapsed time when ignited at strong, medium, and weak flow rates, and Figure 2 is a hot air heating system according to the present invention. FIG. 3 is a front view showing the operating name plate of the combustion selector switch used in the present invention. SW... Combustion selector switch, SW 2 ... Other combustion selector switch contact, SW 3 ... One combustion selector switch contact, RL 2 ... Control relay, RL 3 ... Ignition relay, r 3 -1... Switching contact, Mg 1 , Mg 2 ...
Fuel valve, 11, 12... Fuel valve energizing circuit, 13...
…Ignition device, M 1 …Combustion fan motor, T 2 …
...Thermostat.
Claims (1)
子側と直列接続し電源印加に伴い励磁され上記サ
ーモスタツトが高温端子側に切換ると消磁される
点火用リレーと、燃焼切換スイツチを「中」運転
位置に操作することによつて閉じ「中」運転用燃
料弁の附勢回路を構成する一方の燃焼切換スイツ
チ接点と、燃焼切換スイツチを「中」以外の運転
位置に操作することによつて閉じ対応する燃料弁
の附勢回路を構成する他方の燃焼切換スイツチ接
点と、上記一方の燃焼切換スイツチ接点と並列関
係にあり点火用リレーの励磁に伴い閉成する端子
及び上記他方の燃焼切換スイツチ接点と直列関係
にあり点火用リレーの消磁により閉成する端子を
有する切換接点と、燃焼切換スイツチを各運転位
置に操作することにより点火用リレーの励磁を条
件に励磁され自己保持して燃焼用フアンモータへ
の電源路を閉成しまた前記サーモスタツトの低温
端子側と直列関係にある点火装置への電源路を閉
成し更に前記切換接点への電源路を閉成する制御
リレーとを備えたことを特徴とする温風暖房器。 The ignition relay is connected in series with the low-temperature terminal side of the thermostat that is sensitive to the burner temperature, and is energized when power is applied, and is demagnetized when the thermostat switches to the high-temperature terminal side, and the combustion selector switch is set to the "medium" operating position. Closes by operating one combustion selector switch contact that constitutes the energizing circuit of the fuel valve for "medium" operation, and closes by operating the combustion selector switch to an operating position other than "medium". The other combustion selector switch contact constituting the energizing circuit of the fuel valve is connected in parallel with the one combustion selector switch contact and closes when the ignition relay is energized, and the terminal is in series with the other combustion selector switch contact. A switching contact with a terminal that is related to the ignition relay and closes when the ignition relay is demagnetized, and a combustion selector switch that is operated to each operating position will be energized under the condition of ignition relay energization, self-holding, and connected to the combustion fan motor. and a control relay for closing a power supply path to the ignition device connected in series with the low-temperature terminal side of the thermostat, and further closing a power supply path to the switching contact. Features a hot air heater.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15503079U JPS625545Y2 (en) | 1979-11-08 | 1979-11-08 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15503079U JPS625545Y2 (en) | 1979-11-08 | 1979-11-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5672137U JPS5672137U (en) | 1981-06-13 |
JPS625545Y2 true JPS625545Y2 (en) | 1987-02-07 |
Family
ID=29385517
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15503079U Expired JPS625545Y2 (en) | 1979-11-08 | 1979-11-08 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS625545Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0233005Y2 (en) * | 1985-12-09 | 1990-09-06 |
-
1979
- 1979-11-08 JP JP15503079U patent/JPS625545Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5672137U (en) | 1981-06-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH02242019A (en) | Fuel burner control system and method for controlling energization of electric resistance type igniter | |
JPS625545Y2 (en) | ||
US2624399A (en) | Program circuit for automatic furnaces | |
JPS6027898B2 (en) | Combustion control device | |
KR0181630B1 (en) | Combustor | |
JPS6229809Y2 (en) | ||
JPS584041Y2 (en) | Combustion control device | |
JPS5842756Y2 (en) | Combustion control device for gas combustion equipment | |
JPS6016849Y2 (en) | pot burner | |
US5403182A (en) | Control system for gas fired heating apparatus using double-throw radiant heat sensing switch | |
JPH0330758Y2 (en) | ||
JPS589079Y2 (en) | Automatic control device for oil-burning appliances | |
JPS6137975Y2 (en) | ||
JPS6215636Y2 (en) | ||
JPS636608Y2 (en) | ||
JPS6222048B2 (en) | ||
JPS6034914Y2 (en) | Combustion control circuit | |
JPS5919299Y2 (en) | Self-holding switch circuit with built-in timer | |
JPS6139567B2 (en) | ||
JPS6130048Y2 (en) | ||
JPH0351644Y2 (en) | ||
JPS6016847Y2 (en) | Gas equipment operation control device | |
JPS6021646Y2 (en) | Hot air heater control circuit | |
JPS6040579B2 (en) | How to control a hot air heater | |
JPS6133396Y2 (en) |