JPH1061951A - Operation checking method for inverter - Google Patents

Operation checking method for inverter

Info

Publication number
JPH1061951A
JPH1061951A JP23844496A JP23844496A JPH1061951A JP H1061951 A JPH1061951 A JP H1061951A JP 23844496 A JP23844496 A JP 23844496A JP 23844496 A JP23844496 A JP 23844496A JP H1061951 A JPH1061951 A JP H1061951A
Authority
JP
Japan
Prior art keywords
frequency
combustion
inverter
inverter device
blower motor
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
Application number
JP23844496A
Other languages
Japanese (ja)
Other versions
JP3061757B2 (en
Inventor
Tomizo Okada
富造 岡田
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.)
SAMSON CO Ltd
Original Assignee
SAMSON 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 SAMSON CO Ltd filed Critical SAMSON CO Ltd
Priority to JP8238444A priority Critical patent/JP3061757B2/en
Publication of JPH1061951A publication Critical patent/JPH1061951A/en
Application granted granted Critical
Publication of JP3061757B2 publication Critical patent/JP3061757B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Regulation And Control Of Combustion (AREA)

Abstract

PROBLEM TO BE SOLVED: To detect whether the adjustment of the amount of air supplied is made accurately or not in a boiler which uses an inverter to adjust the amount of air supplied. SOLUTION: The frequency of a current to be fed to a blower motor 7 is altered by an inverter 8, the rotational speed of the blower motor 7 is changed to adjust the amount of air supplied and the amount of a fuel to be supplied to a boiler is controlled to perform a combustion at three positions of high combustion, low combustion and stoppage. In a boiler 1 of such a type, a frequency detector 11 is provided to detect an operation frequency to be sent to the blower motor 7 by the inverter 8. Then, a frequency for checking operation is previously set between a frequency value for high combustion and a frequency value for low combustion. When altering the frequency by the inverter 8, an operation frequency detected by the frequency detector 11 is compared with the frequency for checking operation. If the operation frequency altered passes the frequency for checking operation, the operation of the inverter 8 is determined to operate normally.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明はインバータ装置を用
いて送風機モータの回転速度を変更する送風機でのイン
バータ装置作動確認方法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for confirming the operation of an inverter device in a blower in which the rotation speed of a blower motor is changed using the inverter device.

【0002】[0002]

【従来の技術】高燃焼・低燃焼・停止の3位置で燃焼制
御を行っているボイラの場合、燃料供給量に合わせて燃
焼用空気の供給量も変更する必要がある。空気供給量を
調整する方法として、送風機と燃焼装置の間にダンパを
設けておき、ダンパの開度を調整する方法や、送風機モ
ータにインバータ装置を接続し、インバータ装置にて送
風機モータの回転速度を変更し、空気供給量を調整する
方法がある。インバータ装置を利用して空気供給量の調
整を行う場合、送風機モータの回転速度を下げることで
消費電力の削減や騒音の低減を行うことができるという
効果が得られる。
2. Description of the Related Art In the case of a boiler in which combustion control is performed at three positions of high combustion, low combustion, and stop, it is necessary to change the supply amount of combustion air in accordance with the fuel supply amount. As a method of adjusting the air supply amount, a damper is provided between the blower and the combustion device, and a method of adjusting the opening degree of the damper, or connecting an inverter device to the blower motor, and using the inverter device to control the rotation speed of the blower motor There is a method of changing the air supply amount and adjusting the air supply amount. In the case where the air supply amount is adjusted by using the inverter device, the effect of reducing power consumption and noise can be obtained by lowering the rotation speed of the blower motor.

【0003】空気供給量の調整が正しく行われていない
と、不完全燃焼により煤が発生したり、燃焼ガスの温度
が低下するなどの影響が発生する。ダンパによる空気供
給量調整の場合、空気供給量はダンパの開度を検出する
ことで容易に検出できるが、インバータ装置による空気
供給量調整の場合、空気供給量の検出を行うことができ
ないため異常の検出が行えず、空気供給量がずれたまま
燃焼を続けることがあった。
[0003] If the air supply is not properly adjusted, incomplete combustion produces soot and the temperature of the combustion gas decreases. In the case of adjusting the air supply amount by the damper, the air supply amount can be easily detected by detecting the opening degree of the damper. Could not be detected, and combustion sometimes continued with the air supply amount shifted.

【0004】[0004]

【発明が解決しようとする課題】本発明が解決しようと
する課題は、インバータ装置によって空気供給量の調整
を行うボイラにおいて、空気供給量調整が正確に行われ
ているか否かを検出し、異常発生時には異常を検出し、
不完全燃焼を継続させないようにすることにある。
SUMMARY OF THE INVENTION A problem to be solved by the present invention is to detect whether or not the air supply amount is adjusted accurately in a boiler in which the air supply amount is adjusted by an inverter device. Detects abnormalities when they occur,
The purpose is to prevent incomplete combustion from continuing.

【0005】[0005]

【課題を解決するための手段】高燃焼用周波数と低燃焼
用周波数が設定されたインバータ装置を送風機モータと
接続しておき、インバータ装置により送風機モータへ送
られる電流の周波数を変更させ、送風機モータの回転速
度を変更することで空気供給量を調整しており、ボイラ
への燃料供給量を制御することで、高燃焼・低燃焼・停
止の3位置で燃焼制御が行われるボイラにおいて、イン
バータ装置により送風機モータへ送られる運転周波数を
検出する周波数検出装置を設け、高燃焼用周波数値と低
燃焼用周波数値の間に作動確認用周波数を設定してお
き、インバータ装置による周波数変更時、周波数検出装
置にて検出している運転周波数と作動確認用周波数の比
較を行い、変更している運転周波数が作動確認用周波数
を通過すると、インバータ装置の作動を正常と判断す
る。
An inverter device in which a high combustion frequency and a low combustion frequency are set is connected to a blower motor, and the frequency of a current sent to the blower motor by the inverter device is changed. In a boiler in which combustion control is performed in three positions of high combustion, low combustion, and stop by controlling the amount of fuel supplied to the boiler by changing the rotation speed of the A frequency detection device that detects the operating frequency sent to the blower motor by setting the operation confirmation frequency between the high combustion frequency value and the low combustion frequency value, and detects the frequency when the frequency is changed by the inverter device. The operation frequency detected by the device is compared with the operation confirmation frequency, and if the changed operation frequency passes the operation confirmation frequency, It is determined to be normal operation of the over data device.

【0006】[0006]

【発明の実施の形態】本発明の一実施例を図面を用いて
説明する。図1は本発明の一実施例の構成図である。ボ
イラ1は上部に燃焼装置2が設けられており、燃料供給
配管3を通して送られた燃料と、送風機6から送られる
燃焼用空気によって燃焼が行われ、燃焼量の制御は燃料
供給量と空気供給量を調整することで行われる。燃料の
供給量は燃料供給配管3途中に設けた第1電磁弁4と第
2電磁弁5によって制御されており、第1電磁弁4およ
び第2電磁弁5が閉じられている場合は停止、第1電磁
弁4のみが開かれると低燃焼、第1電磁弁4および第2
電磁弁5が開かれると高燃焼となる。送風機モータ7に
はインバータ装置8を接続しておき、インバータ装置8
から出力される運転周波数によって送風機モータ7の回
転速度が変更され、インバータ装置8から出力されてい
る運転周波数は周波数検出装置11で検出している。送
風機6とボイラ1を結ぶ風道にはダンパ9が設けられて
おり、ダンパ9の開度には全開・着火時用開度・全閉を
設定しておく。第1電磁弁4および第2電磁弁5の開閉
などの燃焼制御とインバータ装置8またはダンパ9によ
る空気供給量調整は、燃焼装置2、第1電磁弁4、第2
電磁弁5、インバータ装置8、ダンパ9、周波数検出装
置11にそれぞれ接続され、内部にタイマー装置12を
持った制御装置10にて行われる。インバータ装置8に
はパージ用周波数>高燃焼用周波数>作動確認用周波数
>低燃焼用周波数である各周波数の値を設定しておく。
DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram of one embodiment of the present invention. The boiler 1 is provided with a combustion device 2 at an upper portion, and combustion is performed by fuel sent through a fuel supply pipe 3 and combustion air sent from a blower 6, and the combustion amount is controlled by the fuel supply amount and the air supply. This is done by adjusting the amount. The fuel supply amount is controlled by a first solenoid valve 4 and a second solenoid valve 5 provided in the middle of the fuel supply pipe 3, and when the first solenoid valve 4 and the second solenoid valve 5 are closed, the fuel supply is stopped. When only the first solenoid valve 4 is opened, low combustion occurs, and the first solenoid valve 4 and the second
When the solenoid valve 5 is opened, high combustion occurs. An inverter device 8 is connected to the blower motor 7, and the inverter device 8
The rotation speed of the blower motor 7 is changed according to the operation frequency output from the inverter, and the operation frequency output from the inverter device 8 is detected by the frequency detection device 11. A damper 9 is provided in an air path connecting the blower 6 and the boiler 1, and the opening degree of the damper 9 is set to fully open, open for ignition, and fully closed. Combustion control such as opening and closing of the first solenoid valve 4 and the second solenoid valve 5 and adjustment of the air supply amount by the inverter device 8 or the damper 9 are performed by the combustion device 2, the first solenoid valve 4, the second
The operation is performed by a control device 10 connected to the solenoid valve 5, the inverter device 8, the damper 9, and the frequency detection device 11 and having a timer device 12 therein. In the inverter device 8, values of the respective frequencies of purge frequency> high combustion frequency> operation confirmation frequency> low combustion frequency are set in advance.

【0007】図2は本発明の一実施例での燃焼と空気供
給量調整の状況を示したタイムチャートであり、制御装
置10によって行われる制御を示している。停止してい
たボイラの運転スイッチが投入されると、制御装置10
はプレパージを行うためにダンパ9の開度を全開とし、
インバータ装置8にはパージ周波数(例えば60Hz)
の指令が送られ、インバータ装置8から送風機モータ7
へ送られる運転周波数をパージ用周波数とする。プレパ
ージの間は送風機からボイラへ送られる風量を最大とし
ておき、プレパージが終了すると、ダンパ9の開度を着
火時用開度に変更し、ダンパ9によって空気供給量を減
少させる。ダンパによって空気供給量を制限した状態で
点火トランスに電圧をかけて火花を発生させ、第1電磁
弁4を開いて低燃焼で着火を行う。
FIG. 2 is a time chart showing the state of the combustion and the adjustment of the air supply amount in one embodiment of the present invention, and shows the control performed by the controller 10. When the operation switch of the stopped boiler is turned on, the control device 10
Fully open the damper 9 to perform the pre-purge,
A purge frequency (for example, 60 Hz) is provided for the inverter device 8.
Is sent from the inverter device 8 to the blower motor 7
The operating frequency sent to is set as the purge frequency. During the prepurge, the amount of air sent from the blower to the boiler is set to a maximum. When the prepurge is completed, the opening of the damper 9 is changed to the ignition opening, and the amount of air supply is reduced by the damper 9. A spark is generated by applying a voltage to the ignition transformer with the air supply amount restricted by the damper, and the first solenoid valve 4 is opened to ignite with low combustion.

【0008】制御装置10は、着火より設定時間(例え
ば10秒)経過すると、インバータ装置8に低燃焼用周
波数(例えば23Hz)の指令を入力し、インバータ装
置8では送風機モータ7へ出力している運転周波数をパ
ージ用周波数から低燃焼用周波数へ移行開始する。運転
周波数の移行指令を出力した時よりタイマー装置12の
作動を開始し、周波数移行指令からの経過時間を検出す
る。周波数検出装置11はインバータ装置8から出力さ
れる運転周波数を検出しており、運転周波数が作動確認
用周波数を通過すると制御装置10へその旨の出力を行
う。インバータ装置8への周波数移行指令からの経過時
間が予め設定しておいた設定時間に達するよりも前に運
転周波数が作動確認周波数を通過すると、インバータ装
置8は正常に作動していると判断し、設定時間以上とな
っても作動確認周波数を通過しなかった場合には異常と
判断して異常の出力を行う。ダンパ9による空気供給量
の調整は着火時のみであり、その後の空気供給量の調整
はインバータ装置8による送風機モータ7の回転速度の
調整によって行い、ダンパ9の開度は全開に移行させて
固定しておく。
When a set time (for example, 10 seconds) elapses from the ignition, the control device 10 inputs a command for a low combustion frequency (for example, 23 Hz) to the inverter device 8, and outputs the command to the blower motor 7 in the inverter device 8. The operation frequency is shifted from the purge frequency to the low combustion frequency. The operation of the timer device 12 is started when the operation frequency shift command is output, and the elapsed time from the frequency shift command is detected. The frequency detecting device 11 detects the operating frequency output from the inverter device 8, and outputs the fact to the control device 10 when the operating frequency passes the operation confirmation frequency. If the operating frequency passes the operation confirmation frequency before the elapsed time from the frequency shift command to the inverter device 8 reaches the preset time, it is determined that the inverter device 8 is operating normally. If the frequency does not pass through the operation confirmation frequency even after the set time or more, it is determined that there is an abnormality, and an abnormality is output. The adjustment of the air supply amount by the damper 9 is performed only at the time of ignition, and the adjustment of the air supply amount thereafter is performed by adjusting the rotation speed of the blower motor 7 by the inverter device 8, and the opening degree of the damper 9 is fixed by shifting to the fully open state. Keep it.

【0009】低燃焼から高燃焼へ燃焼量の切り替えを行
う場合や、高燃焼から低燃焼へ燃焼量の切り替えを行う
場合も同様であり、制御装置10よりインバータ装置8
へ運転周波数変更の指令を入力すると、タイマー装置1
2にて経過時間の検出を開始し、経過時間が設定時間に
達する前に運転周波数が作動確認周波数を通過するとイ
ンバータ装置8は正常に作動していると判断し、設定時
間以上となっても作動確認周波数を通過しなかった場合
には異常と判断して異常の出力を行う。
The same applies to the case where the combustion amount is switched from low combustion to high combustion or the case where the combustion amount is switched from high combustion to low combustion.
When the operation frequency change command is input to the
2, the detection of the elapsed time is started, and if the operating frequency passes the operation confirmation frequency before the elapsed time reaches the set time, it is determined that the inverter device 8 is operating normally. If the frequency does not pass the operation confirmation frequency, it is determined that an abnormality has occurred, and an abnormality is output.

【0010】[0010]

【発明の効果】本発明を実施することにより、インバー
タ装置による空気供給量調整を行うボイラの空気供給量
調整が正確に行われているか否かを検出することがで
き、正確な空気供給量調整が行われていない場合には異
常を検出し、不完全燃焼を継続させないようにすること
ができる。
By implementing the present invention, it is possible to detect whether or not the air supply amount adjustment of the boiler for performing the air supply amount adjustment by the inverter device is accurately performed, and to accurately perform the air supply amount adjustment. Is not performed, an abnormality can be detected and incomplete combustion can be prevented from continuing.

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

【図1】本発明の一実施例の構成図FIG. 1 is a configuration diagram of an embodiment of the present invention.

【図2】本発明の一実施例のタイムチャートFIG. 2 is a time chart of one embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 ボイラ 2 燃焼装置 3 燃料供給配管 4 第1電磁弁 5 第2電磁弁 6 送風機 7 送風機モータ 8 インバータ装置 9 ダンパ 10 制御装置 11 周波数検出装置 12 タイマー装置 REFERENCE SIGNS LIST 1 boiler 2 combustion device 3 fuel supply pipe 4 first solenoid valve 5 second solenoid valve 6 blower 7 blower motor 8 inverter device 9 damper 10 control device 11 frequency detection device 12 timer device

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 高燃焼用周波数と低燃焼用周波数が設定
されたインバータ装置を送風機モータと接続しておき、
インバータ装置により送風機モータの回転速度を変更す
ることで空気供給量を調整しており、ボイラへの燃料供
給量を制御することで、高燃焼・低燃焼・停止の3位置
で燃焼制御が行われるボイラにおいて、インバータ装置
により送風機モータへ送られる運転周波数を検出する周
波数検出装置を設け、高燃焼用周波数値と低燃焼用周波
数値の間に作動確認用周波数を設定しておき、インバー
タ装置による周波数変更時、周波数検出装置にて検出し
ている運転周波数と作動確認用周波数の比較を行い、変
更している運転周波数が作動確認用周波数を通過しなか
った場合には、インバータ装置を異常と判断することを
特徴とするインバータ装置作動確認方法。
1. An inverter device in which a high combustion frequency and a low combustion frequency are set is connected to a blower motor,
The air supply amount is adjusted by changing the rotation speed of the blower motor by the inverter device, and the combustion control is performed at three positions of high combustion, low combustion, and stop by controlling the fuel supply amount to the boiler. In the boiler, a frequency detecting device for detecting an operation frequency sent to the blower motor by the inverter device is provided, and an operation confirmation frequency is set between the high combustion frequency value and the low combustion frequency value, and the frequency by the inverter device is set. At the time of change, the operation frequency detected by the frequency detection device is compared with the operation confirmation frequency, and if the changed operation frequency does not pass the operation confirmation frequency, the inverter device is determined to be abnormal. A method for confirming the operation of an inverter device.
JP8238444A 1996-08-20 1996-08-20 Inverter operation check method Expired - Fee Related JP3061757B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8238444A JP3061757B2 (en) 1996-08-20 1996-08-20 Inverter operation check method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8238444A JP3061757B2 (en) 1996-08-20 1996-08-20 Inverter operation check method

Publications (2)

Publication Number Publication Date
JPH1061951A true JPH1061951A (en) 1998-03-06
JP3061757B2 JP3061757B2 (en) 2000-07-10

Family

ID=17030321

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8238444A Expired - Fee Related JP3061757B2 (en) 1996-08-20 1996-08-20 Inverter operation check method

Country Status (1)

Country Link
JP (1) JP3061757B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160110686A (en) * 2015-03-10 2016-09-22 엘에스산전 주식회사 Method for detecting damage of coupling

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160110686A (en) * 2015-03-10 2016-09-22 엘에스산전 주식회사 Method for detecting damage of coupling

Also Published As

Publication number Publication date
JP3061757B2 (en) 2000-07-10

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