JP2688071B2 - Blower control device - Google Patents
Blower control deviceInfo
- Publication number
- JP2688071B2 JP2688071B2 JP63212833A JP21283388A JP2688071B2 JP 2688071 B2 JP2688071 B2 JP 2688071B2 JP 63212833 A JP63212833 A JP 63212833A JP 21283388 A JP21283388 A JP 21283388A JP 2688071 B2 JP2688071 B2 JP 2688071B2
- Authority
- JP
- Japan
- Prior art keywords
- blower
- control device
- voltage
- combustion fan
- applied voltage
- 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 - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
- F23N3/08—Regulating air supply or draught by power-assisted systems
- F23N3/082—Regulating air supply or draught by power-assisted systems using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2233/00—Ventilators
- F23N2233/06—Ventilators at the air intake
- F23N2233/08—Ventilators at the air intake with variable speed
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)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、強制給排気式のガス湯沸器などの送風機制
御装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower control device such as a forced water supply / exhaust type gas water heater.
従来の技術 従来のこの種の制御装置は、第３図に示すように、送
風機11に印加する電圧を可変する電圧制御手段12と、前
記送風機11に流れる電流を検出する電流検出回路13を備
え、送風機11の起動時に流れる突入電流を電流検出回路
13で検出し、電圧制御手段12によりこれを抑制し阻止す
るようになっていた。2. Description of the Related Art As shown in FIG. 3, a conventional control device of this type includes a voltage control means 12 for varying a voltage applied to a blower 11 and a current detection circuit 13 for detecting a current flowing through the blower 11. , Current detection circuit for the inrush current that flows when the blower 11 starts up
It was detected at 13, and this was suppressed and prevented by the voltage control means 12.
また、第４図（ａ）（ｂ）は送風機の起動時、すなわ
ち運転開始時刻t0からT0間の所定時間は送風機への印加
電圧を下げて起動するよう構成した送風機制御装置を示
し、第３図と同様に突入電流の抑制をするようになって
いた。4 (a) and (b) show a blower control device configured to start by lowering the voltage applied to the blower at the start of the blower, that is, for a predetermined time between the operation start time t 0 and T 0 , As in FIG. 3, the inrush current was suppressed.
発明が解決しようとする課題 しかしながら上記の第３図のような構成では、電流検
出回路を構成する部品には送風機11に流れる電流と同等
値の電流が流れるため、消費電力の大きな部品を必要と
し、かつ構成部品が増加する問題や、また送風機印加電
圧を所定時間下げて起動する第４図のような構成では、
特に低温時の送風機動作特性や起動時間の遅れなど最適
時間の設定が難しく、まだ起動されていないのに、通常
の電圧が印加されてしまうという問題などがあった。However, in the configuration as shown in FIG. 3 described above, a current equivalent to the current flowing in the blower 11 flows through the components forming the current detection circuit, and thus a component with large power consumption is required. In addition, in the problem that the number of components increases, and in the configuration as shown in FIG. 4 in which the blower applied voltage is lowered for a predetermined time to start,
Especially, it is difficult to set the optimum time such as the blower operation characteristics at low temperature and the delay of the start-up time, and there is a problem that the normal voltage is applied even though the fan has not been started up yet.
本発明はかかる従来の課題を解消するもので、送風機
の動作に応じて起動電流の抑制を行うことのできる送風
機の制御装置を提供することを目的とする。The present invention solves such a conventional problem, and an object of the present invention is to provide a blower control device capable of suppressing the starting current in accordance with the operation of the blower.
課題を解決するための手段 上記課題を解決するために本発明の送風機の制御装置
は、送風機の運転開始時に、送風機回転検出器が所定の
回転数を検出するまで送風機印加電圧を制限する送風機
制御手段を備えたものである。Means for Solving the Problems In order to solve the above problems, the control device for a blower according to the present invention is, at the start of operation of the blower, a blower control that limits a blower applied voltage until a blower rotation detector detects a predetermined rotation speed. It is equipped with means.
作用 上記した構成によって、送風機が回転したことを確認
された後に、送風機への印加電圧を上昇させることにな
るので、起動時の突入電流が確実に抑制でき、回転しな
いうちに通常の電圧が印加されることにより、起動時に
モータへの印加電圧を制限する効果が得られないという
事態の発生は避けられる。With the above configuration, the voltage applied to the blower is increased after it is confirmed that the blower has rotated, so the inrush current at startup can be reliably suppressed, and the normal voltage is applied before the blower rotates. By doing so, it is possible to avoid a situation in which the effect of limiting the voltage applied to the motor at the time of startup cannot be obtained.
実施例 以下、本発明の一実施例を図面に基づいて説明する。Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例を示し、強制給排気式燃焼
機に使用した場合の制御装置の構成図である。FIG. 1 shows an embodiment of the present invention, and is a configuration diagram of a control device when it is used in a forced charge / exhaust type combustor.
第１図において、１は羽根車と直流駆動モータで構成
（図示せず）した送風機（以下燃送ファンという）で、
給気路に設けられている。３は燃焼ファン１の回転状態
を検出する回転検出器、４は熱交換器５を加熱するバー
ナで、燃焼ファン１とともに強制給排気式湯沸器６を構
成する。In FIG. 1, reference numeral 1 is a blower (hereinafter referred to as a fuel delivery fan) composed of an impeller and a DC drive motor (not shown),
It is provided in the air supply passage. Reference numeral 3 is a rotation detector that detects the rotation state of the combustion fan 1, and 4 is a burner that heats the heat exchanger 5, and constitutes a forced supply / exhaust type water heater 6 together with the combustion fan 1.
２はチョッパ回路などで構成した電圧可変手段で、電
源端子７に加えられる電源電圧から印加電圧VMを形成し
て燃焼ファン１に印加する。2aはチョッパ回路を駆動す
る発振器で、比較器2bが発振器2aの出力と燃焼ファン制
御装置８の設定端子8aから出力される印加電圧設定信号
VSとを比較してパルス幅音調し、制御信号PWMを出力し
てトランジスタ2cを駆動し、チョッパ回路を制御する。
この印加電圧設定信号VSは燃焼ファン制御装置８の回転
数検出端子8bに入力される回転検出器３の回転検出信号
NSによって第２図に示す燃焼ファン印加電圧VMが得られ
るように設定される。Reference numeral 2 is a voltage varying means composed of a chopper circuit or the like, which forms an applied voltage V M from the power supply voltage applied to the power supply terminal 7 and applies it to the combustion fan 1. 2a is an oscillator for driving the chopper circuit, and the comparator 2b outputs the applied voltage setting signal output from the oscillator 2a and the setting terminal 8a of the combustion fan control device 8.
The pulse width is adjusted by comparing with V S , the control signal PWM is output to drive the transistor 2c, and the chopper circuit is controlled.
This applied voltage setting signal V S is the rotation detection signal of the rotation detector 3 that is input to the rotation speed detection terminal 8b of the combustion fan control device 8.
Combustion fan voltage applied V M shown in Figure 2 is set to be obtained by the N S.
第２図において、時刻t0で燃焼ファン１を起動したと
き、燃焼ファン制御装置８に設定された印加電圧設定信
号VSLと発振器2aの三角波発振出力とが比較器2bで比較
され、トランジスタ2cの出力から第２図（ｂ）のようの
オン時間周期の制御信号PWMLが出力され、チョッパ回路
の出力に第２図（ｃ）のような燃焼ファン印加電圧VHL
が得られ、燃焼ファン１の起動電圧としてスタートす
る。そして燃焼ファン１の回転検出器３の検出値が第２
図（ｄ）のFSに到達した時刻tnで回転検出器３は回転検
出信号NSを発生し、燃焼ファン制御装置８は設定端子8a
に第２図（ａ）のような印加電圧設定信号VSHを設定
し、比較器2bはオン時間の長い第２図（ｄ）のような制
御信号PWMHを出力し、チョッパ回路の出力を第２図
（ｃ）のように印加電圧をVMLからVMLに上昇させる。こ
のようにして、燃焼ファン１は必ず最大能力で運転に入
り、強制給排気式燃焼機器において、バーナ点火前に燃
焼室をリフレッシュするために必要なプリパージが行わ
れる。なお、印加電圧VMLは燃焼ファンが必ず起動でき
る値に設定される。In FIG. 2, when the combustion fan 1 is started at time t 0 , the applied voltage setting signal V SL set in the combustion fan control device 8 and the triangular wave oscillation output of the oscillator 2a are compared by the comparator 2b, and the transistor 2c The control signal PWM L of the on-time period as shown in FIG. 2 (b) is output from the output of the combustion fan, and the combustion fan applied voltage V HL as shown in FIG. 2 (c) is output to the output of the chopper circuit.
Is obtained, and the combustion fan 1 starts as a starting voltage. The detection value of the rotation detector 3 of the combustion fan 1 is the second
At the time t n when reaching F S in the diagram (d), the rotation detector 3 generates the rotation detection signal N S , and the combustion fan control device 8 sets the setting terminal 8a.
The applied voltage setting signal V SH as shown in FIG. 2 (a) is set to the comparator 2b, and the comparator 2b outputs the control signal PWM H as shown in FIG. 2 (d), which has a long ON time, and outputs the output of the chopper circuit. The applied voltage is increased from V ML to V ML as shown in FIG. 2 (c). In this way, the combustion fan 1 always starts to operate with the maximum capacity, and in the forced air supply / exhaust type combustion device, the pre-purge necessary for refreshing the combustion chamber is performed before the burner ignition. The applied voltage V ML is set to a value at which the combustion fan can always start.
上記構成において、燃焼ファン１を駆動するモータ
（図示せず）はロータが少しでも回転すると負荷が軽く
なり、駆動電流が下がるため、この時点で印加電圧を上
げるように作用し、突入電流の抑制回避ができるという
効果が得られる。In the above configuration, the motor (not shown) that drives the combustion fan 1 has a lighter load when the rotor rotates even a little and the drive current decreases. Therefore, at this point, the motor acts to increase the applied voltage and suppress the inrush current. The effect that it can be avoided is obtained.
なお、本実施例では２段階の印加電圧で駆動モータを
制御したが、多段階で制御するようにしてもよい。Although the drive motor is controlled by the applied voltage in two stages in this embodiment, it may be controlled in multiple stages.
発明の効果 以上のように本発明の送風機の制御装置によれば、次
の効果が得られる。Effects of the Invention According to the blower control device of the present invention as described above, the following effects are obtained.
（１）送風機の印加電圧を低くして起動し、回転数を検
出してから印加電圧を上昇させる構成としているので、
起動時の突入電流が確実に抑制でき、駆動モータと制御
回路の保護ができる。(1) Since it is configured to start by lowering the applied voltage of the blower, detect the number of revolutions, and then increase the applied voltage,
Inrush current at startup can be reliably suppressed, and the drive motor and control circuit can be protected.
（２）送風機の回転検知に同期して印加電圧を可変する
ものであるから、マイクロコンピュータなどのソフトウ
ェアで構成でき、回路部品の低減が図れる。(2) Since the applied voltage is changed in synchronization with the rotation detection of the blower, it can be configured by software such as a microcomputer and the number of circuit components can be reduced.
第１図は本発明の一実施例における送風機の制御装置の
制御ブロック図、第２図は同制御装置の動作を説明する
波形図、第３図および第４図はそれぞれ従来の送風機制
御装置の制御ブロック図および他の従来の制御装置の動
作を説明する波形図である。 １……送風機、２……電圧可変手段、３……送風機（燃
焼ファン）回転検出器、４……バーナ、７……電源端
子、８……送風機（燃焼ファン）制御手段。FIG. 1 is a control block diagram of a blower control device according to an embodiment of the present invention, FIG. 2 is a waveform diagram for explaining the operation of the control device, and FIGS. 3 and 4 are conventional blower control devices, respectively. It is a waveform diagram explaining operation | movement of a control block diagram and another conventional control apparatus. 1 ... Blower, 2 ... Voltage varying means, 3 ... Blower (combustion fan) rotation detector, 4 ... Burner, 7 ... Power supply terminal, 8 ... Blower (combustion fan) control means.
Claims (1)
器と、送風機の運転開始時に前記送風機回転検出器が所
定の回転数を検出するまで、送風機駆動のためのモータ
への印加電圧を制限する送風機制御手段とを備えた送風
機の制御装置。1. A blower rotation detector for detecting the number of revolutions of a blower, and a voltage applied to a motor for driving the blower is limited until the blower rotation detector detects a predetermined number of revolutions at the start of operation of the blower. And a blower control means for controlling the blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63212833A JP2688071B2 (en) | 1988-08-26 | 1988-08-26 | Blower control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63212833A JP2688071B2 (en) | 1988-08-26 | 1988-08-26 | Blower control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0261415A JPH0261415A (en) | 1990-03-01 |
| JP2688071B2 true JP2688071B2 (en) | 1997-12-08 |
Family
ID=16629111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63212833A Expired - Lifetime JP2688071B2 (en) | 1988-08-26 | 1988-08-26 | Blower control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2688071B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9310458U1 (en) * | 1993-03-05 | 1994-06-30 | Landis & Gyr Business Support Ag, Zug | Electronic control device for gas burners of heating systems |
| DE9310451U1 (en) * | 1993-03-05 | 1994-06-30 | Landis & Gyr Business Support Ag, Zug | Control device for automatic gas firing systems for heating systems |
| CN108105138B (en) * | 2017-12-18 | 2019-11-05 | 青岛海信激光显示股份有限公司 | A kind of target method for starting fan |
-
1988
- 1988-08-26 JP JP63212833A patent/JP2688071B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0261415A (en) | 1990-03-01 |
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