JPH01121627A - Controlling device for ignition heater - Google Patents
Controlling device for ignition heaterInfo
- Publication number
- JPH01121627A JPH01121627A JP27860687A JP27860687A JPH01121627A JP H01121627 A JPH01121627 A JP H01121627A JP 27860687 A JP27860687 A JP 27860687A JP 27860687 A JP27860687 A JP 27860687A JP H01121627 A JPH01121627 A JP H01121627A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- heater
- ignition heater
- ignition
- microcomputer
- 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
Links
- 239000000446 fuel Substances 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 239000000919 ceramic Substances 0.000 abstract description 5
- 238000013021 overheating Methods 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract 1
- 239000003350 kerosene Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 11
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910001120 nichrome Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、ガス、石油等を燃料とする燃焼器具の点火ヒ
ータの温度制御を行うための点大ヒータ制御装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a large-spot heater control device for controlling the temperature of an ignition heater of a combustion appliance that uses gas, oil, or the like as fuel.
従来の技術
ガス、石油等を燃料とする燃焼器具の点火装置は、従来
は発熱体として、ニクロム線等を材料とするヒータ材を
通電加熱して点火するものが一般・的であったが、ニク
ロム線等のヒータ材は耐久性、信頼性に欠けるため、点
火ヒータの交換等の保守は不可欠のものであった。そこ
で近年はセラミックヒータと称する、ヒータ材を磁器材
料内部に設けて焼結成形した、耐久性、信頼性の高い点
火ヒータが開発されている。Conventional technology Ignition devices for combustion appliances that use gas, oil, etc. as fuel have conventionally ignited by heating a heater material made of nichrome wire or the like as a heating element. Since heater materials such as nichrome wire lack durability and reliability, maintenance such as replacing the ignition heater has been essential. Therefore, in recent years, highly durable and reliable ignition heaters, called ceramic heaters, have been developed in which a heater material is provided inside a porcelain material and then sintered.
発明が解決しようとする問題点
しかし、セラミックヒータは、構造上ヒータ材がセラミ
ック層により保護されているため、負荷熱容量が大きく
、従来のニクロム線等の単純なヒータ材を使用する点火
ヒータに比べ、同一電力量の点火ヒータで比較すると、
温度上昇時間が長いという問題があり、点火の即応性が
要求される燃焼器具には適していないという問題があっ
た。そのため、即応性を高める手段として、負荷熱容量
にみあう大電力量の辷−夕材を使用して温度上昇時間を
短縮することが考えられるが、点火に必要な電力量に比
べ、過大な電力量を供給することになり、ヒータ材の異
状加熱による破損という新たな問題が発生する。Problems to be Solved by the Invention However, because ceramic heaters have a structure in which the heater material is protected by a ceramic layer, they have a large load heat capacity, compared to conventional ignition heaters that use simple heater materials such as nichrome wire. , when comparing ignition heaters with the same amount of electricity,
There is a problem in that the temperature rise time is long, making it unsuitable for combustion appliances that require quick ignition response. Therefore, as a means to improve responsiveness, it is possible to shorten the temperature rise time by using lumber with a large amount of electricity that matches the load heat capacity, but the As a result, a new problem arises in that the heater material is damaged due to abnormal heating.
本発明は上記問題点を解決するため、大電力量のヒータ
材を駆使して点火の即応性を高めているにもかかわらず
、ヒータ材編度が安全使用上限に達すると電力量を自動
的に低くするように制御して、ヒータ材の異状過熱を防
止することが可能な点火ヒータ制御装置を提供すること
を目的とする。In order to solve the above-mentioned problems, the present invention makes full use of a heater material with a high power consumption to improve ignition promptness, but when the heater material braid reaches the upper limit for safe use, the power consumption is automatically reduced. It is an object of the present invention to provide an ignition heater control device that can prevent abnormal overheating of a heater material by controlling the temperature to be as low as possible.
問題点を解決するための手段
上記目的を達成するために本発明の点火ヒータ制御装置
は、ガス、石油等を燃料とする燃焼器具の点火をする点
火ヒータと、前記点火ヒータの温度を検出する温度検出
手段と、前記温度検出手段の出力をもとに前２点火ヒー
タの温度を！Ｐ１１定し、マイクロコンピュータに温度
情報を送出する温度判定手段と、前記温度判定手段の温
度情報をもとに、点火ヒータの通電制御を行うための制
御信号をつくるマイクロコンピュタト、前記マイクロコ
ンピュータからの制御信号によシ、前記点火ヒータへの
通電制御を行うスイッチング手段とを備えた構成である
。Means for Solving the Problems To achieve the above object, the ignition heater control device of the present invention includes an ignition heater that ignites a combustion appliance that uses gas, oil, etc. as fuel, and detects the temperature of the ignition heater. Temperature detection means and the temperature of the front two ignition heaters based on the output of the temperature detection means! P11, a temperature determining means for transmitting temperature information to the microcomputer; a microcomputer for generating a control signal for controlling energization of the ignition heater based on the temperature information of the temperature determining means; The ignition heater is configured to include switching means for controlling energization to the ignition heater based on a control signal.
作 用
本発明は上記した構成により、温度！ｌ’ｌｌ定手段で
点火ヒータの温度を判定し、マイクロコンピュータは温
度情報を読み、点火ヒータが冷えている時は連続通電に
よる急速加熱をし、次に加熱により安全使用上限度に達
した時点で点火ヒータへの通電を間欠通電に切り替える
ように制御して、ヒータ材の異状過熱を防止することを
可能にしている。Effect The present invention has the above-mentioned structure, and the temperature! The temperature of the ignition heater is determined by a constant means, the microcomputer reads the temperature information, and when the ignition heater is cold, it is rapidly heated by continuous energization, and then when the upper limit of safe use is reached by heating. By controlling the energization to the ignition heater to be switched to intermittent energization, it is possible to prevent abnormal overheating of the heater material.
実施例
第１図は本発明の一実施例を示す構成図で、１は点火ヒ
ータ、２は温度検出手段で、前記点火ヒータ１と同一セ
ラミック内に互いに絶縁して焼結成形されている。３は
温度判定手段で、前記温度検出手段２を含む抵抗グリッ
ジ３０及びコンパレータ３１により、温度検出手段２の
温度抵抗特性を利用して温度判定を行う。４はマイクロ
コンピュータで、前記温度判定手段３の情報により、点
火ヒータが冷えていると判別するとドライブトランジス
タ５０を介してスイッチング手段５を連続的にオンさせ
る。５１は電源アイソレート用の７オトサイリスタで、
スイッチング素子であるトライアック５２をトリガする
。トリガされてオンしたトライアック５２は交流電源６
と点火ヒータ１との回路を閉路し、点火ヒータ１は発熱
する。温度検出手段２は点火ヒータ１と熱的に結合して
いて、点火ヒータ１が安全使用上限温度に達すると前記
温度判定手段の出力が反転するように前記抵抗ブリッジ
３０の各定数が設定しである。ヒータ１が安全使用上限
温度に達し、温度判定手段３の出力が反転すると、マイ
クロコンピュータ４は間欠パルス信号を発生し、ドライ
ブトランジスタ６０を介しスイッチング手段５を制御し
、ヒータ１を間欠通電状態にさせる、間欠パルス信号は
点火ヒータ１の安全使用上限温度を越えない状態を保つ
ようにパルス幅及び繰り返し周期が設定してあり、間欠
通電に切り替った後は、点火ヒータ１の不必要な過熱は
防止される。８はゼロクロス検出用トランジスタで、電
源６に接続されたフォトカプラ７により駆動され、マイ
クロコンピュータ４にゼロクロス信号を送出する。マイ
クロコンピュータ４は、ドライブトランジスタ６０への
制御信号を前記ゼロクロス信号に同期して出力するよう
にプログラムされており、このためスイッチング手段５
は交流電源６のゼロ電位点で開閉することになり、スイ
ッチング雑音を低くおさえることを可能にしている。Embodiment FIG. 1 is a block diagram showing an embodiment of the present invention, in which 1 is an ignition heater and 2 is a temperature detection means, which are sintered and formed in the same ceramic as the ignition heater 1 and insulated from each other. Reference numeral 3 denotes a temperature determining means, which uses the temperature resistance characteristic of the temperature detecting means 2 to determine the temperature by means of a resistance glitch 30 including the temperature detecting means 2 and a comparator 31. 4 is a microcomputer which continuously turns on the switching means 5 via the drive transistor 50 when it determines that the ignition heater is cold based on the information from the temperature determining means 3; 51 is a 7 otothyristor for power supply isolation,
The triac 52, which is a switching element, is triggered. The triac 52 that is triggered and turned on is connected to the AC power supply 6
The circuit between the ignition heater 1 and the ignition heater 1 is closed, and the ignition heater 1 generates heat. The temperature detection means 2 is thermally coupled to the ignition heater 1, and each constant of the resistance bridge 30 is set such that the output of the temperature determination means is inverted when the ignition heater 1 reaches the upper limit temperature for safe use. be. When the heater 1 reaches the safe upper limit temperature and the output of the temperature determination means 3 is reversed, the microcomputer 4 generates an intermittent pulse signal, controls the switching means 5 via the drive transistor 60, and puts the heater 1 in an intermittent energization state. The pulse width and repetition period of the intermittent pulse signal are set so as not to exceed the upper limit temperature for safe use of the ignition heater 1, and after switching to intermittent energization, unnecessary overheating of the ignition heater 1 is prevented. is prevented. Reference numeral 8 denotes a zero-cross detection transistor, which is driven by a photocoupler 7 connected to a power source 6 and sends a zero-cross signal to the microcomputer 4. The microcomputer 4 is programmed to output a control signal to the drive transistor 60 in synchronization with the zero-crossing signal, and therefore the switching means 5
is opened and closed at the zero potential point of the AC power supply 6, making it possible to suppress switching noise.
第２図はマイクロコンピュータ４の動作を示す７０−チ
ャートの一例で、スタートがかけられるとステップ２１
において温度判定手段からの送出信号を読み取り、点火
ヒータが冷えている場合はステップ２２に移り、マイク
ロコンピュータ内部の信号発生回路は連続通電の信号状
態となる。ステップ２１において、点大ヒータが安全使
用温度上限に達したと判別された場合はステップ２５に
移り、マイクロコンピュータ内部の信号発生回路は間欠
通電の信号状態となる。ステップ２３においてゼロクロ
ス判別されるとステップ２４に移り、ステップ２２又は
ステップ２５において発生された制御信号を出力する。FIG. 2 is an example of a 70-chart showing the operation of the microcomputer 4. When a start is applied, step 21 is shown.
At step 22, the signal sent from the temperature determining means is read, and if the ignition heater is cold, the process moves to step 22, and the signal generating circuit inside the microcomputer enters a continuous energization signal state. In step 21, if it is determined that the high point heater has reached the upper limit of safe use temperature, the process moves to step 25, and the signal generating circuit inside the microcomputer enters the signal state of intermittent energization. When a zero cross is determined in step 23, the process moves to step 24, and the control signal generated in step 22 or step 25 is output.
発明の効果
以上の失施例から明らかなように本発明は、発熱体の負
荷熱容量にみあう大電力量の点火ヒータを用いて急速加
熱し、必要温度に達した後は電力量を低減するように構
成したものであるから、点火ヒータの加熱速度が急瞬で
、点火の即応性が要求される燃焼器具に使用が可能で、
発熱体の温度で電力量を制御するため、点火ヒータの不
必要な過熱がなく、耐久性、信頼性が高く、又、ゼロク
ロス検出機能により電源の開閉をゼロ電位にて行うため
、スイッチング雑音が少ないという優れた効果を有する
点火ヒータの制御装置をス現できるものである。As is clear from the examples that exceed the effects of the invention, the present invention rapidly heats the heating element using an ignition heater with a large power consumption that matches the load heat capacity of the heating element, and reduces the power consumption after reaching the required temperature. Because of this structure, it can be used in combustion appliances where the heating rate of the ignition heater is instantaneous and immediate ignition response is required.
Since the amount of electricity is controlled by the temperature of the heating element, there is no unnecessary overheating of the ignition heater, resulting in high durability and reliability. Also, since the power supply is opened and closed at zero potential with the zero-cross detection function, switching noise is reduced. Therefore, it is possible to develop an ignition heater control device that has an excellent effect of reducing the number of ignition heaters.
第１図は本発明の一笑施例を示す構成図、第２図はマイ
クロコンピュータのプログラムの一例を示す７０−チャ
ートである、
１・・・・・・点火ヒータ、２・・・・・・温度検出手
段、３・・・・・・温度判定手段、４・・・・・・マイ
クロコンピュータ、５・・・・・・スイッチング手段。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名気÷
１ 舶
ソ都
第２図FIG. 1 is a block diagram showing a simple embodiment of the present invention, and FIG. 2 is a 70-chart showing an example of a microcomputer program. 1... Ignition heater, 2... Temperature detection means, 3...Temperature determination means, 4...Microcomputer, 5...Switching means. Name of agent: Patent attorney Toshio Nakao and 1 other name ÷ 1 USSR Figure 2
Claims (1)
ータと、前記点火ヒータの温度を検出する温度検出手段
と、前記温度検出手段の出力をもとに前記点火ヒータの
温度を判定し、マイクロコンピュータに温度情報を送出
する温度判定手段と、前記温度判定手段の温度情報をも
とに、点火ヒータの通電制御を行うための制御信号るつ
くるマイクロコンピュータと、前記マイクロコンピュー
タからの制御信号により、前記点火ヒータへの通電制御
を行うスイッチング手段とを備えた点火ヒータ制御装置
。an ignition heater for igniting a combustion appliance using gas, oil, etc. as fuel; a temperature detection means for detecting the temperature of the ignition heater; and determining the temperature of the ignition heater based on the output of the temperature detection means; temperature determining means for sending temperature information to a microcomputer; a microcomputer for generating a control signal for controlling energization of the ignition heater based on the temperature information from the temperature determining means; and a control signal from the microcomputer. , and switching means for controlling energization to the ignition heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27860687A JPH01121627A (en) | 1987-11-04 | 1987-11-04 | Controlling device for ignition heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27860687A JPH01121627A (en) | 1987-11-04 | 1987-11-04 | Controlling device for ignition heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01121627A true JPH01121627A (en) | 1989-05-15 |
Family
ID=17599617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27860687A Pending JPH01121627A (en) | 1987-11-04 | 1987-11-04 | Controlling device for ignition heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01121627A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02169923A (en) * | 1988-12-21 | 1990-06-29 | Rinnai Corp | Electricity supply control device for ignition heater |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS621169A (en) * | 1985-06-26 | 1987-01-07 | Toshiba Corp | Antistatic mechanism for revolving shaft |
-
1987
- 1987-11-04 JP JP27860687A patent/JPH01121627A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS621169A (en) * | 1985-06-26 | 1987-01-07 | Toshiba Corp | Antistatic mechanism for revolving shaft |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02169923A (en) * | 1988-12-21 | 1990-06-29 | Rinnai Corp | Electricity supply control device for ignition heater |
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