JPH06335280A - Dc fan motor whose air flow rate is controlled constantly - Google Patents

Dc fan motor whose air flow rate is controlled constantly

Info

Publication number
JPH06335280A
JPH06335280A JP5115733A JP11573393A JPH06335280A JP H06335280 A JPH06335280 A JP H06335280A JP 5115733 A JP5115733 A JP 5115733A JP 11573393 A JP11573393 A JP 11573393A JP H06335280 A JPH06335280 A JP H06335280A
Authority
JP
Japan
Prior art keywords
motor
static pressure
fan motor
air volume
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.)
Granted
Application number
JP5115733A
Other languages
Japanese (ja)
Other versions
JP2945817B2 (en
Inventor
昌亨 ▲高▼田
Masayuki Takada
Kanji Izaki
勘治 井崎
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 Ecology Systems Co Ltd
Original Assignee
Matsushita Seiko 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 Seiko Co Ltd filed Critical Matsushita Seiko Co Ltd
Priority to JP5115733A priority Critical patent/JP2945817B2/en
Publication of JPH06335280A publication Critical patent/JPH06335280A/en
Application granted granted Critical
Publication of JP2945817B2 publication Critical patent/JP2945817B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Control Of Positive-Displacement Air Blowers (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

PURPOSE:To provide a DC motor whose air flow rate is controlled constantly, which informs users of increase of pressure drops due to external factors such as clogging of a filter and foreign matters in a duct without using a particular sensor such as a pressure sensor and suppresses the control exceeding the capability of the motor with remarkable increase of pressure drops. CONSTITUTION:A DC motor whose air flow rate is controlled constantly, comprises a static pressure calculating means 13 for obtaining with the calculation a static pressure exerted on a DC fan motor 1 from the number of rotations detected by a number-of-revolution detecting means 4, a maximum static pressure storage means 15 for storing the maximum static pressure at each air flow rate specified by an air flow rate specifying means 7 and also a pressure drop increase informing means 14 for comparing a static pressure obtained by the static pressure calculating means 13 with the maximum static pressure stored in the maximum static pressure storage means 15 and for issuing an alarm to users when the static pressure obtained by calculation exceeds the previously stored maximum static pressure.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、レンジフードや天井埋
め込み型の換気扇などダクト送風機器に利用される風量
一定制御DCファンモータに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant air volume control DC fan motor used for duct blowers such as a range hood and a ceiling-embedded ventilation fan.

【0002】[0002]

【従来の技術】近年、レンジフードや天井埋め込み型の
換気扇などにおいては、調理の状態や居室の状況に応じ
て最適な風量で換気ができるような制御性のよいファン
モータが求められている。
2. Description of the Related Art In recent years, in a range hood, a ceiling-embedded ventilation fan, and the like, there is a demand for a fan motor having a good controllability, which is capable of ventilating with an optimum air volume according to the cooking condition and the condition of the living room.

【0003】従来、この種のファンモータは、ダクトの
状態など外的要因によって風量が変化したり、風量検出
のためにサーミスタという専用のセンサーを使用する必
要がありコスト高になるとともに、使用時間が長くなる
につれてサーミスタの表面に埃などが付着し、検出風量
が変化してしまうという問題があったため、我々はすで
に図10〜図13に示すような方法を提案している。
Conventionally, this type of fan motor has a change in the air volume due to external factors such as the condition of the duct, and it is necessary to use a dedicated sensor called a thermistor to detect the air volume, which increases the cost and the operating time. Since there is a problem that dust or the like adheres to the surface of the thermistor as the length of the air becomes longer, and the detected air volume changes, we have already proposed the methods shown in FIGS. 10 to 13.

【0004】図に示すように、51はDCモータ52を
搭載したDCファンモータで、その吐出口58はダクト
59に接続されている。ダクト59はDCファンモータ
51によって吸い込まれたたばこの煙や調理による廃ガ
スによって汚染された室内空気を、建物の壁60を通過
させて室外に導くものである。DCモータ52は回転子
位置によって固定子巻線に対する通電を制御する通電制
御手段53によって回転を制御され、その制御状態によ
り回転数検出手段54がDCモータ52の回転数を検出
している。57は強、中、弱などのDCファンモータ5
1の運転風量を指示する風量指示手段で、61は強、
中、弱それぞれの運転風量を実現するためのDCモータ
52に対する印加電圧における規定回転数を演算する規
定回転数演算手段で、56は印加電圧制御手段で回転数
検出手段54が検出したDCモータ52の印加電圧V
(n)における運転回転数と規定回転数演算手段61よ
り演算により求められた規定回転数との差ΔN(n)か
ら変更印加電圧差ΔV(n)を求め、つぎに印加する電
圧V(n+1)を決定し、通電制御手段53に信号を送
る印加電圧を送り、DCモータ52に対する印加電圧を
制御するものである。
As shown in the figure, 51 is a DC fan motor equipped with a DC motor 52, and its discharge port 58 is connected to a duct 59. The duct 59 guides indoor air polluted by smoke of cigarettes sucked by the DC fan motor 51 and waste gas from cooking through the wall 60 of the building to the outside. The rotation of the DC motor 52 is controlled by the energization control means 53 that controls the energization of the stator winding depending on the rotor position, and the rotation speed detection means 54 detects the rotation speed of the DC motor 52 according to the control state. 57 is a DC fan motor 5 such as strong, medium, and weak
An air volume instruction means for instructing the operating air volume of 1, 61 is strong,
Specified rotation speed calculation means for calculating a specified rotation speed at an applied voltage to the DC motor 52 for realizing medium and weak operating air volumes, and 56 is a DC motor 52 detected by the rotation speed detection means 54 by an applied voltage control means. Applied voltage V
The changed applied voltage difference ΔV (n) is calculated from the difference ΔN (n) between the operating speed in (n) and the specified speed calculated by the specified speed calculation means 61, and the voltage V (n + 1) to be applied next is obtained. ) Is determined and an applied voltage for sending a signal to the energization control means 53 is sent to control the applied voltage to the DC motor 52.

【0005】上記構成において、通電制御手段53がD
Cモータ52の回転子位置に応じて巻線に対する通電を
切り換え、DCモータ52は風路のダクト損失、図にお
けるLに応じた回転数で回転する。このとき回転数検出
手段54は通電制御手段53の巻線に対する通電の切り
換え速度より運転回転数Naを検出する。つぎに、風量
指示手段57によって指示された運転風量を図における
Qmとすると、規定回転数演算手段61は現在の印加電
圧Vaにおいて指示風量Qmで運転するために必要な規
定回転数Nmaを演算し、印加電圧制御手段56が運転
回転数Naと規定回転数Nmaを比較する。比較の結
果、図11および図12に示すように、Na<Nmaの
場合遠心送風機であるので図からわかるように指示風量
Qmより多い風量で運転されていることになるので、印
加電圧を下げる必要があり印加電圧制御手段56が図に
おけるΔvaだけ電圧を下げて印加電圧をVbとする。
この状態で再び回転数検出手段54が変更後の印加電圧
Vbにおける運転回転数、図におけるNbを検出し、規
定回転数演算手段61はVbにおいて指示風量Qmで運
転するために必要な規定回転数Nmbを演算し、印加電
圧制御手段56が運転回転数Nbと規定回転数Nmbを
比較する。比較の結果図に示すように、Nb>Nmbの
場合印加電圧Vaで運転された場合とは逆に指示風量Q
mより少ない風量で運転されていることになるので、印
加電圧を上げる必要があり、印加電圧制御手段56が図
におけるΔvbだけ電圧を下げて印加電圧をVcとする
とともに再び回転数検出手段54が変更後の印加電圧V
cにおける運転回転数、図におけるNcを検出し、規定
回転数演算手段61はVcにおいて指示風量Qmで運転
するために必要な規定回転数Nmcを演算し、印加電圧
制御手段56が運転回転数Ncと規定回転数Nmcを比
較する。比較の結果、図に示すようにNc<Nmcの場
合、Vaのときと同じく指示風量Qmより多い風量で運
転されていることになるので印加電圧を下げる必要があ
り、印加電圧制御手段56が図におけるΔvcだけ電圧
を下げて印加電圧をVL とする。このとき図に示すよう
に、印加電圧VL における回転数NL が印加電圧VL に
おける指示風量Qmで運転するために必要な回転数Nm
L と等しくなると、DCファンモータ51が指示された
風量Qmで運転されているので、印加電圧制御手段56
は印加電圧VL を保持して風量Qmを確保するものであ
る。各印加電圧ごとの調整電圧はΔva>Δvb>Δv
cで徐々に指示風量に近づけていた。
In the above structure, the energization control means 53 is D
The energization of the winding is switched according to the rotor position of the C motor 52, and the DC motor 52 rotates at a rotation speed according to the duct loss in the air passage, L in the figure. At this time, the rotation speed detection means 54 detects the operating rotation speed Na from the switching speed of the energization control means 53 for energizing the winding. Next, assuming that the operating air volume instructed by the air volume instruction means 57 is Qm in the figure, the specified rotation speed calculation means 61 calculates the specified rotation speed Nma required to operate at the current applied voltage Va at the indicated air flow Qm. The applied voltage control means 56 compares the operating speed Na with the specified speed Nma. As a result of the comparison, as shown in FIG. 11 and FIG. 12, when Na <Nma, the centrifugal fan is a centrifugal blower, and as shown in the figure, it is operated with an air volume larger than the indicated air volume Qm. Therefore, it is necessary to lower the applied voltage. Therefore, the applied voltage control means 56 lowers the voltage by Δva in the figure to set the applied voltage to Vb.
In this state, the rotation speed detection means 54 detects again the operation rotation speed at the changed applied voltage Vb, Nb in the figure, and the specified rotation speed calculation means 61 requires the specified rotation speed for operating at the indicated air volume Qm at Vb. Nmb is calculated, and the applied voltage control means 56 compares the operating speed Nb with the specified speed Nmb. As a result of comparison, as shown in the figure, in the case of Nb> Nmb, contrary to the case of operating with the applied voltage Va, the indicated air flow Q
Since it is operated with an air volume smaller than m, it is necessary to increase the applied voltage, the applied voltage control means 56 lowers the voltage by Δvb in the figure to set the applied voltage to Vc, and the rotation speed detection means 54 again. Applied voltage after change V
The operating speed at c, Nc in the figure, is detected, and the operating speed calculating means 61 calculates the operating speed Nmc required for operating at the indicated air volume Qm at Vc, and the applied voltage control means 56 operates the operating speed Nc. And the specified rotation speed Nmc are compared. As a result of the comparison, when Nc <Nmc as shown in the figure, it is necessary to lower the applied voltage because the operation is performed with an air volume larger than the instruction air volume Qm as in the case of Va. The voltage is lowered by .DELTA.vc and the applied voltage is VL. At this time, as shown in the figure, the rotation speed NL at the applied voltage VL is the rotation speed Nm required to operate at the instructed air volume Qm at the applied voltage VL.
When it becomes equal to L, since the DC fan motor 51 is operating at the instructed air volume Qm, the applied voltage control means 56
Holds the applied voltage VL to secure the air volume Qm. The adjustment voltage for each applied voltage is Δva>Δvb> Δv
The airflow was gradually approaching at c.

【0006】なお図13は要部の具体的な回路の一例
で、回転数検出手段54、印加電圧制御手段56、規定
回転数演算手段61はマイクロコンピュータ62とスイ
ッチング電源63および周辺回路より構成されている。
通電制御手段53はスイッチング素子より構成されてお
りスイッチング電源63からのDCモータ52の巻線へ
の電流供給をマイクロコンピュータ62のゲート信号に
より制御している。
FIG. 13 shows an example of a concrete circuit of the main part. The rotation speed detecting means 54, the applied voltage control means 56, and the specified rotation speed calculating means 61 are composed of a microcomputer 62, a switching power supply 63 and peripheral circuits. ing.
The energization control means 53 is composed of a switching element, and controls the current supply from the switching power supply 63 to the winding of the DC motor 52 by the gate signal of the microcomputer 62.

【0007】[0007]

【発明が解決しようとする課題】このような従来のDC
ファンモータでは、フィルターの目詰まり、ダクト内へ
の異物の混入など外的要因により、初期施工時に比べ圧
力損失が増大していることに使用者が気づかないという
問題点があった。また、圧力損失が著しく増大したと
き、モータの能力を超えて風量一定制御をするため、機
器を損傷するという問題があった。
DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
The fan motor has a problem that the user does not notice that the pressure loss is larger than that at the time of initial construction due to external factors such as clogging of the filter and entry of foreign matter into the duct. Further, when the pressure loss is significantly increased, the air volume is controlled to exceed the capacity of the motor, which causes a problem of damaging the device.

【0008】本発明は上記課題を解決するもので、圧力
センサーなど特別なセンサーを使用することなく、フィ
ルターの目詰まり、ダクト内への異物の混入など外的要
因による圧力損失の増大を使用者に報知することを第1
の目的とする。
The present invention is intended to solve the above-mentioned problems, and it is possible to increase the pressure loss due to external factors such as clogging of the filter and mixing of foreign matters into the duct without using a special sensor such as a pressure sensor. First to notify
The purpose of.

【0009】第2の目的は、圧力損失の著しい増大によ
るモータの能力を超えた制御を抑制することにある。
A second object is to suppress control over the capacity of the motor due to a significant increase in pressure loss.

【0010】[0010]

【課題を解決するための手段】本発明の風量一定制御D
Cファンモータは、上記第1の目的を達成するために第
1の手段はDCモータを搭載したDCファンモータと、
前記DCモータに対する通電を制御する通電制御手段
と、この通電制御手段の動作より前記DCモータの運転
回転数を検出する回転数検出手段と、前記DCファンモ
ータの運転風量を指示する風量指示手段と、この風量指
示手段によって指示された風量で運転するための前記D
Cモータへの印加電圧における規定回転数を演算する規
定回転数演算手段と、前記回転数検出手段によって検出
された運転回転数を前記規定回転数演算手段により求め
られた規定回転数と同回転数になるよう前記DCモータ
の印加電圧を制御する印加電圧制御手段と、前記回転数
検出手段によって検出された運転回転数から前記DCフ
ァンモータにかかる静圧を演算する静圧演算手段と、前
記風量指示手段によって指示された風量における最大静
圧を記憶する最大静圧記憶手段と、前記静圧演算手段に
より求められた静圧が前記最大静圧記憶手段に記憶され
ている所定静圧以上を検知した時、圧力損失の増大を知
らせる圧力損失増大報知手段を配してなる風量一定制御
DCファンモータの構成とする。
Means for Solving the Problems A constant air volume control D of the present invention
In order to achieve the above-mentioned first object, the C fan motor has a DC fan motor equipped with a DC motor as a first means,
An energization control unit that controls energization to the DC motor, a rotation speed detection unit that detects an operation speed of the DC motor from the operation of the energization control unit, and an air volume instruction unit that indicates an operation air volume of the DC fan motor. , D for operating at the air volume instructed by the air volume instruction means
A specified rotation speed calculation means for calculating a specified rotation speed in the voltage applied to the C motor, and an operating rotation speed detected by the rotation speed detection means are the same as the specified rotation speed obtained by the specified rotation speed calculation means. Voltage control means for controlling the applied voltage of the DC motor, static pressure calculation means for calculating the static pressure applied to the DC fan motor from the operating speed detected by the speed detection means, and the air flow rate. A maximum static pressure storage means for storing the maximum static pressure in the air volume instructed by the instruction means, and a static pressure obtained by the static pressure calculation means is detected to be equal to or more than a predetermined static pressure stored in the maximum static pressure storage means. In this case, a constant-flow-rate control DC fan motor having a pressure loss increase notifying means for notifying an increase in pressure loss is provided.

【0011】また、第2の手段はDCモータを搭載した
DCファンモータと、前記DCモータに対する通電を制
御する通電制御手段と、この通電制御手段の動作より前
記DCモータの運転回転数を検出する回転数検出手段
と、前記DCファンモータの運転風量を指示する風量指
示手段と、この風量指示手段によって指示された風量で
運転するための前記DCモータへの印加電圧における規
定回転数を演算する規定回転数演算手段と、前記回転数
検出手段によって検出された運転回転数を前記規定回転
数演算手段により求められた規定回転数と同回転数にな
るよう前記DCモータの印加電圧を制御する印加電圧制
御手段と、この印加電圧制御手段が前記DCモータへの
印加電圧を所定電圧I以上に制御しようとしたとき、D
Cファンモータの能力を越えたことを報知する能力オー
バー報知手段を設けた風量一定制御DCファンモータの
構成とする。
The second means is a DC fan motor equipped with a DC motor, an energization control means for controlling energization of the DC motor, and an operation speed of the DC motor is detected by the operation of the energization control means. A rotation speed detection means, an air volume instruction means for instructing an operation air volume of the DC fan motor, and a regulation for calculating a prescribed rotation number in a voltage applied to the DC motor for operating at the air volume instructed by the air volume instruction means. An applied voltage for controlling the applied voltage of the DC motor so that the operating speed detected by the rotating speed detecting means and the operating speed detected by the rotating speed detecting means become the same as the specified rotating speed obtained by the specified rotating speed calculating means. When the control means and the applied voltage control means try to control the applied voltage to the DC motor to a predetermined voltage I or more, D
The constant-flow-rate control DC fan motor is provided with an over-capacity reporting means for reporting that the capacity of the C fan motor has been exceeded.

【0012】また、第2の目的を達成するために、第3
の手段は印加電圧制御手段がDCモータへの印加電圧を
所定電圧I以上に制御しようとしたとき、DCモータへ
の通電を停止する緊急通電制御手段を設けた風量一定制
御DCファンモータの構成とする。
In order to achieve the second object, the third object
Is a configuration of a DC fan motor having a constant air volume control provided with an emergency energization control means for stopping energization of the DC motor when the applied voltage control means tries to control the voltage applied to the DC motor to a predetermined voltage I or more. To do.

【0013】また、第4の手段は印加電圧制御手段がD
Cモータへの印加電圧を所定電圧I以上に制御しようと
したとき、前記DCモータへの印加電圧を所定電圧Iよ
り低い所定電圧IIに制御する最大印加電圧制御手段を配
してなる風量一定制御DCファンモータの構成とする。
In the fourth means, the applied voltage control means is D
When the voltage applied to the C motor is to be controlled to be equal to or higher than the predetermined voltage I, the constant air flow control is provided by arranging maximum applied voltage control means for controlling the voltage applied to the DC motor to a predetermined voltage II lower than the predetermined voltage I. The configuration is a DC fan motor.

【0014】[0014]

【作用】本発明は上記した第1の手段の構成により、回
転数検出手段により検出された運転回転数から、静圧演
算手段によってDCファンモータにかかる静圧を演算に
より求め、この演算により求められた静圧と最大静圧記
憶手段に記憶された風量指示手段によって指示された各
風量における最大静圧とを比較し、演算により求められ
た静圧があらかじめ記憶されている最大静圧以上を検出
すると、フィルターの目詰まり、ダクト内への異物の混
入など圧力損失の増大を検知し、圧力損失増大報知手段
は使用者に対して警報を発することができる。
According to the present invention, with the configuration of the first means described above, the static pressure applied to the DC fan motor is calculated by the static pressure calculating means from the operating speed detected by the rotation speed detecting means, and is calculated by this calculation. The static pressure obtained is compared with the maximum static pressure at each air volume instructed by the air volume instructing means stored in the maximum static pressure storage means, and the static pressure obtained by the calculation is greater than or equal to the maximum static pressure stored in advance. When it is detected, an increase in pressure loss such as clogging of the filter and entry of foreign matter into the duct is detected, and the pressure loss increase notifying means can issue a warning to the user.

【0015】また、第2の手段の構成により印加電圧制
御手段がDCモータへの印加電圧を所定電圧I以上に制
御しようとしたとき、能力オーバー報知手段がDCファ
ンモータの能力を超えたことを使用者に対して警報を発
することができる。
When the applied voltage control means tries to control the applied voltage to the DC motor to be equal to or higher than the predetermined voltage I by the structure of the second means, the over capacity notification means indicates that the capacity of the DC fan motor is exceeded. An alarm can be issued to the user.

【0016】また、第3の手段の構成により印加電圧制
御手段がDCモータへの印加電圧を所定電圧I以上に制
御しようとしたとき、緊急通電制御手段はDCファンモ
ータの能力を超えたと判断し、DCファンモータへの通
電を停止することができる。
Further, when the applied voltage control means tries to control the applied voltage to the DC motor to the predetermined voltage I or more by the configuration of the third means, the emergency energization control means determines that the capacity of the DC fan motor is exceeded. The power supply to the DC fan motor can be stopped.

【0017】また、第4の手段の構成により印加電圧制
御手段がDCモータへの印加電圧を所定電圧I以上に制
御しようとしたとき、最大印加電圧制御手段がDCファ
ンモータの能力を超えない所定電圧Iより低い所定電圧
IIに制御することができる。
Further, according to the structure of the fourth means, when the applied voltage control means tries to control the applied voltage to the DC motor to the predetermined voltage I or more, the maximum applied voltage control means does not exceed the capacity of the DC fan motor. Predetermined voltage lower than voltage I
II can be controlled.

【0018】[0018]

【実施例】以下、本発明の第1実施例について図1〜図
3を参照しながら説明する。図に示すように、1はDC
モータ2を搭載したDCファンモータで、その吐出口8
はダクト9に接続され、吸い込み口12にはフィルター
16が設けられている。ダクト9はDCファンモータ1
によって吸い込まれたたばこの煙や調理による廃ガスに
よって汚染された室内空気を建物の壁10を通過させて
室外に導くダクトである。DCモータ2は回転子位置に
よって固定子巻線に対する通電を制御する通電制御手段
3によって回転を制御され、その制御状態により回転数
検出手段4がDCモータ2の回転数を検出している。7
は強、中、弱などのDCファンモータ1の運転風量を指
示する風量指示手段で、5は強、中、弱それぞれの運転
風量を実現するためのDCモータ2に対する印加電圧に
おける規定回転数を演算する規定回転数演算手段で、6
は回転数検出手段4が検出したDCモータ2の印加電圧
V(n)における運転回転数と規定回転数演算手段5よ
り演算により求められた規定回転数との差ΔN(n)か
ら変更印加電圧差ΔV(n)を求め、つぎに印加する電
圧V(n+1)を決定し、通電制御手段3に信号を送る
印加電圧制御手段であり、15は風量指示手段7で指示
される各運転風量における最大静圧を記憶する最大静圧
記憶手段で、13は静圧演算手段で回転数検出手段4に
よって検出された運転回転数N(rpm)、羽根車の径
(mm)と静圧係数KpからDCファンモータ1にかかる
静圧Psを次式により演算する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. As shown in the figure, 1 is DC
DC fan motor equipped with motor 2 and its outlet 8
Is connected to the duct 9 and the suction port 12 is provided with a filter 16. The duct 9 is the DC fan motor 1
It is a duct that guides indoor air polluted by smoke of cigarettes sucked in and waste gas from cooking through the wall 10 of the building to the outside. The rotation of the DC motor 2 is controlled by the energization control means 3 that controls the energization of the stator winding depending on the rotor position, and the rotation speed detection means 4 detects the rotation speed of the DC motor 2 according to the control state. 7
Is an air volume instructing means for instructing the operating air volume of the DC fan motor 1 such as strong, medium, and weak, and 5 is a specified rotation speed in the applied voltage to the DC motor 2 for realizing each of the strong, medium, and weak operating air volumes. The specified rotation speed calculation means for calculating 6
Is an applied voltage that is changed from the difference ΔN (n) between the operating speed in the applied voltage V (n) of the DC motor 2 detected by the rotation speed detection means 4 and the specified rotation speed calculated by the specified rotation speed calculation means 5. The applied voltage control means determines the difference ΔV (n), determines the voltage V (n + 1) to be applied next, and sends a signal to the energization control means 3. Reference numeral 15 is for each operating air volume instructed by the air volume instructing means 7. Maximum static pressure storage means for storing the maximum static pressure, 13 is a static pressure calculation means based on the operating speed N (rpm) detected by the speed detection means 4, the diameter of the impeller (mm) and the static pressure coefficient Kp. The static pressure Ps applied to the DC fan motor 1 is calculated by the following equation.

【0019】[0019]

【数1】 [Equation 1]

【0020】14は圧力損失増大報知手段で静圧演算手
段13の演算により得られた静圧と最大静圧記憶手段1
5に記憶されている最大静圧とを比較し、フィルター1
6の目詰まりや、ダクト内への異物の混入など外的要因
により、初期施工時に比べ圧力損失が異常に増大してい
るかどうかを判断制御する。そして、その他の構成は従
来例の構成と同じである。
Reference numeral 14 is a pressure loss increase notifying means, and the static pressure obtained by the calculation of the static pressure calculating means 13 and the maximum static pressure storing means 1
Compare the maximum static pressure stored in 5 and filter 1
Whether or not the pressure loss is abnormally increased compared to the initial construction due to external factors such as the clogging of No. 6 and the inclusion of foreign matter in the duct is controlled. The other configurations are the same as those of the conventional example.

【0021】上記構成において、DCファンモータ1の
電源を投入するとマイクロコンピュータ11のROMに
記憶された図2のフローチャートに示すプログラムの手
順にしたがって運転が開始される。まずステップ18で
初期電圧を出力するとともにステップ19で初期ゲート
信号を出力しDCモータ2を回転させる。つぎにステッ
プ20でDCモータ2の回転子位置を検出し検出された
位置に応じたゲート信号をステップ21で出力する。こ
のゲート信号の変化時間をステップ22で計測したのち
この変化時間から運転回転数をステップ23で演算し保
持しておく。そして、ステップ24で風量指示信号を取
り込んで指示風量を確認し、ステップ25でDCファン
モータにかかる静圧を演算し、ステップ26で指示風量
における最大静圧を検索し、ステップ27で演算により
求められた静圧と検索された最大静圧を比較する。比較
の結果、演算静圧が大ならばステップ28で、フィルタ
ー16の目詰まりや、ダクト内への異物の混入など外的
要因により、初期施工時に比べ圧力損失が異常に増大し
ていると判断し、使用者に対して警報を発する。また、
演算静圧が小ならば、ステップ29へ進み指示風量と印
加電圧に合致する規定回転数を演算し、ステップ23で
保持した運転回転数とステップ30で比較する。比較の
結果、回転数が同じであればステップ20へもどり、以
後はこの繰り返しで運転が続行される。比較の結果、運
転回転数が規定回転数と異なる場合、ステップ31で運
転回転数と規定回転数の差を演算しステップ32でスイ
ッチング電源17の出力電圧を決定・出力し、ステップ
20にもどり、以後はこの繰り返しで運転が続行され
る。
In the above structure, when the power of the DC fan motor 1 is turned on, the operation is started according to the procedure of the program stored in the ROM of the microcomputer 11 and shown in the flowchart of FIG. First, in step 18, the initial voltage is output, and in step 19, the initial gate signal is output to rotate the DC motor 2. Next, in step 20, the rotor position of the DC motor 2 is detected and a gate signal corresponding to the detected position is output in step 21. After the change time of this gate signal is measured in step 22, the operating speed is calculated and held in step 23 from this change time. Then, in step 24, the air volume instruction signal is fetched to confirm the instructed air volume, in step 25 the static pressure applied to the DC fan motor is calculated, in step 26 the maximum static pressure in the instructed air volume is searched, and in step 27 it is calculated. Compare the static pressure obtained with the maximum static pressure retrieved. As a result of the comparison, if the calculated static pressure is large, it is determined in step 28 that the pressure loss is abnormally increased as compared with the initial construction due to external factors such as clogging of the filter 16 and mixing of foreign matter into the duct. Then, an alarm is issued to the user. Also,
If the calculated static pressure is small, the routine proceeds to step 29, where a specified rotational speed that matches the instructed air volume and the applied voltage is calculated, and the operating rotational speed held in step 23 is compared with step 30. As a result of the comparison, if the number of revolutions is the same, the process returns to step 20, and thereafter, the operation is continued by repeating this. As a result of the comparison, if the operating speed is different from the specified speed, the difference between the operating speed and the specified speed is calculated in step 31, the output voltage of the switching power supply 17 is determined and output in step 32, and the process returns to step 20. After that, the operation is continued by repeating this.

【0022】なお図3は要部の具体的な回路の一例で、
回転数検出手段4、印加電圧制御手段6、規定回転数演
算手段5、静圧演算手段13、圧力損失増大報知手段1
4、最大静圧記憶手段15はマイクロコンピュータ11
とスイッチング電源17および周辺回路より構成されて
いる。通電制御手段3はスイッチング素子より構成され
ておりスイッチング電源17からのDCモータ2の巻線
への電流供給をマイクロコンピュータ11のゲート信号
により制御している。
FIG. 3 shows an example of a concrete circuit of the main part.
Rotation speed detection means 4, applied voltage control means 6, specified rotation speed calculation means 5, static pressure calculation means 13, pressure loss increase notification means 1
4. The maximum static pressure storage means 15 is the microcomputer 11
And a switching power supply 17 and peripheral circuits. The energization control means 3 is composed of a switching element, and controls the current supply from the switching power supply 17 to the winding of the DC motor 2 by the gate signal of the microcomputer 11.

【0023】このように本発明の第1の実施例の風量一
定制御DCファンモータによれば、回転数検出手段4に
より検出された運転回転数から、DCファンモータ1に
かかる静圧を演算により求める静圧演算手段13を設
け、風量指示手段7によって指示された各風量における
最大静圧を記憶する最大静圧記憶手段15を設けるとと
もに、静圧演算手段13により求められた静圧と最大静
圧記憶手段15に記憶された最大静圧とを比較し、演算
により求められた静圧があらかじめ記憶されている最大
静圧以上を検出すると、使用者に対して警報を発する圧
力損失増大報知手段14を設けることにより、フィルタ
ー16の目詰まりや、ダクト9内への異物の混入など外
的要因により、初期施工時に比べ圧力損失が異常に増大
していることを使用者に対して注意を促すため、使用者
は圧力損失増大の原因究明および対策を施すことができ
る。
As described above, according to the constant air volume control DC fan motor of the first embodiment of the present invention, the static pressure applied to the DC fan motor 1 is calculated from the operating rotation speed detected by the rotation speed detecting means 4. The static pressure calculating means 13 for obtaining is provided, and the maximum static pressure storage means 15 for storing the maximum static pressure at each air volume instructed by the air volume instructing means 7 is provided, and the static pressure obtained by the static pressure calculating means 13 and the maximum static pressure are provided. The maximum static pressure stored in the pressure storage means 15 is compared, and when the static pressure obtained by the calculation is greater than or equal to the maximum static pressure stored in advance, a pressure loss increase notifying means for issuing an alarm to the user is issued. By using 14, the pressure loss is abnormally increased compared to the initial construction due to external factors such as clogging of the filter 16 and entry of foreign matter into the duct 9. Caution for the user can be subjected to cause investigation and countermeasure of increasing the pressure loss for.

【0024】つぎに、本発明の第2の実施例について図
4および図5を参照しながら説明する。なお、第1の実
施例と同一部分には同一番号を付し詳細な説明は省略す
る。図に示すように、33は印加電圧制御手段6がDC
モータ2への次期印加電圧を所定電圧I以上の値に決定
すると、DCファンモータ1の能力を超えたことを報知
する能力オーバー報知手段であり、その他の構成は第1
の実施例の構成と同じである。
Next, a second embodiment of the present invention will be described with reference to FIGS. 4 and 5. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted. As shown in FIG.
When the next applied voltage to the motor 2 is determined to be a value equal to or higher than the predetermined voltage I, it is a capacity over notification means for reporting that the capacity of the DC fan motor 1 has been exceeded.
The configuration is the same as that of the above embodiment.

【0025】上記構成において、DCファンモータ1の
電源を投入するとマイクロコンピュータ34のROMに
記憶された図5のフローチャートに示すプログラムの手
順にしたがって運転が開始される。ここでステップ24
の風量指示信号を取り込んで指示風量を確認するステッ
プまでは第1の実施例と同じで、ステップ24以降ステ
ップ35で指示風量と印加電圧に合致する規定回転数を
演算し、ステップ23で保持した運転回転数とステップ
36で比較する。比較の結果、回転数が同じであればス
テップ20へもどり、以後はこの繰り返しで運転が続行
される。つぎに、比較の結果運転回転数が規定回転数と
異なる場合、ステップ37で運転回転数と規定回転数の
差を演算しステップ38でスイッチング電源17の出力
電圧を決定・出力し、ステップ39で変更後の印加電圧
とDCファンモータ1の能力限界電圧である所定電圧I
と比較する。比較の結果、変更後の印加電圧が所定電圧
Iより小ならばステップ20へもどり、以後はこの繰り
返しで運転が続行される。つぎに、変更後の印加電圧が
所定電圧I以上ならばステップ40でDCファンモータ
1の能力を超えたことを使用者に対して警報を行う。そ
して、ステップ20にもどり、以後はこの繰り返しで運
転が続行される。
In the above structure, when the power of the DC fan motor 1 is turned on, the operation is started according to the procedure of the program stored in the ROM of the microcomputer 34 and shown in the flowchart of FIG. Step 24 here
The steps up to the step of fetching the air volume instruction signal and confirming the instruction air volume are the same as those in the first embodiment. From step 24 to step 35, the specified rotation speed that matches the instruction air volume and the applied voltage is calculated and held in step 23. The operating speed is compared with the step 36. As a result of the comparison, if the number of revolutions is the same, the process returns to step 20, and thereafter, the operation is continued by repeating this. Next, as a result of comparison, if the operating speed is different from the specified speed, the difference between the operating speed and the specified speed is calculated in step 37, the output voltage of the switching power supply 17 is determined and output in step 38, and in step 39. The applied voltage after the change and the predetermined voltage I which is the capacity limit voltage of the DC fan motor 1.
Compare with. As a result of the comparison, if the changed applied voltage is smaller than the predetermined voltage I, the process returns to step 20, and thereafter, the operation is continued by repeating this. If the changed applied voltage is equal to or higher than the predetermined voltage I, the user is warned in step 40 that the capacity of the DC fan motor 1 has been exceeded. Then, the process returns to step 20, and thereafter, the operation is continued by repeating this.

【0026】このように本発明の第2の実施例の風量一
定制御DCファンモータによれば、DCファンモータ1
の能力を超えたことを判断し、使用者に対して注意を促
す能力オーバー報知手段33を設けることにより、印加
電圧制御手段6がDCモータ2への印加電圧を所定電圧
I以上に制御しようとしたとき、能力オーバー報知手段
33がDCファンモータ1の能力を超えたことを使用者
に対して警報を発することができるので、第1の実施例
と同様に、フィルター16の目詰まりや、ダクト9内へ
の異物の混入など外的要因によるDCファンモータ2の
能力を超えた異常な印加電圧の上昇に対して、その原因
究明および対策を施すことができる。
As described above, according to the constant air volume control DC fan motor of the second embodiment of the present invention, the DC fan motor 1
By providing the over-performance notification means 33 for urging the user to pay attention, the applied voltage control means 6 tries to control the applied voltage to the DC motor 2 to a predetermined voltage I or more. At this time, the capacity over notification means 33 can give a warning to the user that the capacity of the DC fan motor 1 has been exceeded. Therefore, as in the first embodiment, the filter 16 is clogged or the duct is closed. With respect to an abnormal increase in the applied voltage that exceeds the capacity of the DC fan motor 2 due to an external factor such as the entry of foreign matter into the inside 9, the cause can be investigated and countermeasures can be taken.

【0027】つぎに、本発明の第3の実施例について図
6および図7を参照しながら説明する。なお、第1の実
施例と同一部分には同一番号を付し詳細な説明は省略す
る。図に示すように、41は印加電圧制御手段6がDC
モータ2への次期印加電圧を所定電圧I以上の値に決定
すると、DCファンモータの運転を停止制御させること
を通電制御手段3に信号を送る緊急通電制御手段であ
り、その他の構成は第1の実施例の構成と同じである。
Next, a third embodiment of the present invention will be described with reference to FIGS. 6 and 7. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted. As shown in the figure, 41 indicates that the applied voltage control means 6 is DC.
The emergency energization control means sends a signal to the energization control means 3 to stop the operation of the DC fan motor when the next applied voltage to the motor 2 is determined to be a value equal to or higher than the predetermined voltage I. Other configurations are the first. The configuration is the same as that of the above embodiment.

【0028】上記構成において、DCファンモータ1の
電源を投入するとマイクロコンピュータ42のROMに
記憶された図7のフローチャートに示すプログラムの手
順にしたがって運転が開始される。ここでステップ31
の運転回転数と規定回転数の差を演算するステップまで
は第1の実施例と同じで、ステップ31以降ステップ4
3で回転数差から次期印加電圧を決定し、ステップ44
で次期印加電圧とDCファンモータ1の能力限界電圧で
ある所定電圧Iと比較する。比較の結果、変更後の印加
電圧が所定電圧Iより小ならば、ステップ45でステッ
プ43において決定された印加電圧をスイッチング電源
17で出力し、ステップ20へもどり、以後はこの繰り
返しで運転が続行される。つぎに、変更後の印加電圧が
所定電圧I以上ならばステップ46でスイッチング電源
17の出力電圧をゼロにし、DCファンモータ1の運転
を停止する。
In the above structure, when the power of the DC fan motor 1 is turned on, the operation is started according to the procedure of the program stored in the ROM of the microcomputer 42 and shown in the flowchart of FIG. Step 31 here
The steps up to the step of calculating the difference between the operating speed and the specified speed are the same as those in the first embodiment.
In step 3, the next applied voltage is determined from the rotational speed difference, and step 44
Then, the next applied voltage is compared with the predetermined voltage I which is the capacity limit voltage of the DC fan motor 1. As a result of the comparison, if the changed applied voltage is smaller than the predetermined voltage I, the applied voltage determined in step 43 is output by the switching power supply 17 in step 45, the process returns to step 20, and the operation is continued by repeating this process thereafter. To be done. Next, if the applied voltage after the change is equal to or higher than the predetermined voltage I, the output voltage of the switching power supply 17 is set to zero in step 46, and the operation of the DC fan motor 1 is stopped.

【0029】このように本発明の第3の実施例の風量一
定制御DCファンモータによれば、DCファンモータ1
の能力を超えることを推定し、DCファンモータ1の運
転を停止制御させることを通電制御手段3に信号を送る
緊急通電制御手段41を設けることにより、印加電圧制
御手段6がDCモータ2への次期印加電圧を所定電圧I
以上に制御しようとしたとき、DCファンモータ1の運
転を停止するので、DCファンモータ2の能力を超えた
異常使用を未然に防止することができる。
As described above, according to the constant air volume control DC fan motor of the third embodiment of the present invention, the DC fan motor 1
The provision of the emergency energization control means 41 which sends a signal to the energization control means 3 to stop the operation of the DC fan motor 1 by estimating that the capacity of the DC fan motor 1 is exceeded, so that the applied voltage control means 6 applies to the DC motor 2. The next applied voltage is the predetermined voltage I
When the above-described control is attempted, the operation of the DC fan motor 1 is stopped, so that abnormal use exceeding the capacity of the DC fan motor 2 can be prevented.

【0030】つぎに、本発明の第4の実施例について図
8および図9を参照しながら説明する。なお、第1の実
施例および第3の実施例と同一部分には同一番号を付し
詳細な説明は省略する。図に示すように、47は印加電
圧制御手段6がDCモータ2への次期印加電圧を所定電
圧I以上の値に決定すると、DCファンモータへの次期
印加電圧を所定電圧Iより低い所定電圧IIに制御させる
ことを通電制御手段3に信号を送る最大印加電圧制御手
段であり、その他の構成は第1の実施例の構成と同じで
ある。
Next, a fourth embodiment of the present invention will be described with reference to FIGS. 8 and 9. The same parts as those in the first and third embodiments are designated by the same reference numerals and detailed description thereof will be omitted. As shown in the drawing, when the applied voltage control means 6 determines the next applied voltage to the DC motor 2 to be a value equal to or higher than the predetermined voltage I, the next applied voltage to the DC fan motor 47 is a predetermined voltage II lower than the predetermined voltage I. It is the maximum applied voltage control means for sending a signal to the energization control means 3 to control it, and the other construction is the same as that of the first embodiment.

【0031】上記構成において、DCファンモータ1の
電源を投入するとマイクロコンピュータ48のROMに
記憶された図9のフローチャートに示すプログラムの手
順にしたがって運転が開始される。ここでステップ44
の次期印加電圧とDCファンモータ1の能力限界電圧で
ある所定電圧Iと比較するステップまでは第3の実施例
と同じで、ステップ44において比較の結果、変更後の
印加電圧が所定電圧Iより小ならば、ステップ45でス
テップ43において決定された印加電圧をスイッチング
電源17で出力し、ステップ20へもどり、以後はこの
繰り返しで運転が続行される。つぎに、変更後の印加電
圧が所定電圧I以上ならばステップ49でスイッチング
電源17の出力電圧を所定電圧Iより低い所定電圧IIに
し、DCファンモータ1の運転を制御する。
In the above structure, when the DC fan motor 1 is turned on, the operation is started according to the procedure of the program stored in the ROM of the microcomputer 48 and shown in the flowchart of FIG. Step 44 here
Up to the step of comparing the next applied voltage with the predetermined voltage I which is the capacity limit voltage of the DC fan motor 1, the same as in the third embodiment. As a result of the comparison in step 44, the changed applied voltage is lower than the predetermined voltage I. If it is small, the applied voltage determined in step 43 is output by the switching power supply 17 in step 45, the process returns to step 20, and the operation is continued by repeating this process thereafter. Next, if the changed applied voltage is equal to or higher than the predetermined voltage I, the output voltage of the switching power supply 17 is set to a predetermined voltage II lower than the predetermined voltage I in step 49 to control the operation of the DC fan motor 1.

【0032】このように本発明の第4の実施例の風量一
定制御DCファンモータによれば、DCファンモータ1
の能力を超えることを推定し、DCファンモータ1の能
力を超えない所定電圧IIをDCモータ2への印加電圧と
する最大印加電圧制御手段47を設けることにより、印
加電圧制御手段6がDCモータ2への次期印加電圧を所
定電圧I以上に制御しようとしたとき、DCファンモー
タ1の能力を超えない所定電圧IIをDCモータに印加
し、DCファンモータ1を運転をするので、DCファン
モータ1の能力を超えた状態でDCファンモータ1を運
転することを防止することができる。
As described above, according to the constant air volume control DC fan motor of the fourth embodiment of the present invention, the DC fan motor 1
By providing the maximum applied voltage control means 47 that makes the applied voltage to the DC motor 2 a predetermined voltage II that does not exceed the capacity of the DC fan motor 1, the applied voltage control means 6 causes the DC motor to operate. When it is attempted to control the voltage applied to the next stage 2 to the predetermined voltage I or higher, the predetermined voltage II that does not exceed the capacity of the DC fan motor 1 is applied to the DC motor to operate the DC fan motor 1. It is possible to prevent the DC fan motor 1 from operating in a state where the capacity of No. 1 is exceeded.

【0033】[0033]

【発明の効果】以上の実施例の説明からも明らかなよう
に、本発明によれば回転数検出手段により検出された運
転回転数から、静圧演算手段によってDCファンモータ
にかかる静圧を演算により求める静圧演算手段を設け、
風量指示手段によって指示された各風量における最大静
圧を記憶する最大静圧記憶手段を設けるとともに、静圧
演算手段により求められた静圧と最大静圧記憶手段に記
憶された最大静圧とを比較し、演算により求められた静
圧があらかじめ記憶されている最大静圧以上を検出する
と、使用者に対して警報を発する圧力損失増大報知手段
を設けることにより、圧力センサーなど特別なセンサー
を使用することなく、フィルターの目詰まりや、ダクト
内への異物の混入など外的要因により、初期施工時に比
べ圧力損失が異常に増大していることを検知し、使用者
に対して注意を促すため、使用者は圧力損失増大の原因
究明および対策を施すことができ、機器の異常使用を未
然に防ぐことが可能となるので、安全に使用することが
できる風量一定制御DCファンモータを提供できる。
As is apparent from the above description of the embodiments, according to the present invention, the static pressure applied to the DC fan motor is calculated by the static pressure calculation means from the operating rotation speed detected by the rotation speed detection means. Is provided with a static pressure calculation means
The maximum static pressure storage means for storing the maximum static pressure at each air volume instructed by the air volume instruction means is provided, and the static pressure obtained by the static pressure calculation means and the maximum static pressure stored in the maximum static pressure storage means are stored. By using a special sensor such as a pressure sensor, by providing a pressure loss increase notifying means that issues a warning to the user when the static pressure obtained by comparison and the detected static pressure exceeds the maximum static pressure stored in advance. To detect the abnormal increase in pressure loss compared to the initial construction due to external factors such as clogging of the filter and entry of foreign matter into the duct, and to alert the user. Since the user can investigate the cause of the increase in pressure loss and take countermeasures and prevent the abnormal use of the device, it is possible to safely use the air flow control system. It is possible to provide a DC fan motor.

【0034】また、印加電圧制御手段がDCモータへの
印加電圧を所定電圧I以上に制御しようとしたとき、D
Cファンモータの能力を超えたことを判断し、使用者に
対して注意を促す能力オーバー報知手段を設けても、フ
ィルターの目詰まりや、ダクト内への異物の混入など、
外的要因によるDCファンモータの能力を超えた異常な
印加電圧の上昇に対して、使用者はその原因究明および
対策を施すことができるため、機器の異常使用を未然に
防ぐことが可能となるので、安全に使用することができ
る風量一定制御DCファンモータを提供できる。
When the applied voltage control means tries to control the applied voltage to the DC motor to a predetermined voltage I or higher, D
Even if an over-capacity informing means for deciding that the capacity of the C fan motor is exceeded and calling the user's attention is provided, clogging of the filter, mixing of foreign matter into the duct, etc.
Since the user can investigate the cause and take measures against an abnormal increase in the applied voltage exceeding the capacity of the DC fan motor due to an external factor, it is possible to prevent the abnormal use of the device. Therefore, it is possible to provide a DC fan motor with a constant air flow rate that can be safely used.

【0035】また、印加電圧制御手段がDCモータへの
次期印加電圧を所定電圧I以上に制御しようとしたと
き、DCファンモータの能力を超えることを推定し、D
Cファンモータの運転を停止制御させることを通電制御
手段に信号を送る緊急通電制御手段を設けることによ
り、DCファンモータの能力を超えることが推定された
とき、DCファンモータの運転を停止するので、DCフ
ァンモータの能力を超えて運転されることがなくなるた
め、機器損傷の起こらない安全性の高い風量一定制御D
Cファンモータを提供できる。
Further, when the applied voltage control means tries to control the next applied voltage to the DC motor to the predetermined voltage I or more, it is estimated that the capacity of the DC fan motor is exceeded, and D
By providing the emergency energization control means for sending a signal to the energization control means to control the stop of the operation of the C fan motor, the operation of the DC fan motor is stopped when it is estimated that the capacity of the DC fan motor is exceeded. , The DC fan motor will not be operated beyond its capability, so there will be no damage to the equipment and the airflow constant control D is highly safe.
A C fan motor can be provided.

【0036】また、印加電圧制御手段がDCモータへの
次期印加電圧を所定電圧I以上に制御しようとしたと
き、DCファンモータの能力を超えることを推定し、D
Cファンモータの能力を超えない所定電圧IIをDCモー
タへの印加電圧とする最大印加電圧制御手段を設けて
も、DCファンモータの能力を超えることを推定された
とき、DCファンモータの能力を超えない所定電圧IIを
DCモータに印加し、DCファンモータを運転をするの
で、DCファンモータの能力を超えた状態でDCファン
モータを運転することが防止されるため、機器損傷の起
こらない安全性の高い風量一定制御DCファンモータを
提供できる。
Further, when the applied voltage control means tries to control the next applied voltage to the DC motor to the predetermined voltage I or more, it is estimated that the capacity of the DC fan motor is exceeded, and D
Even if the maximum applied voltage control means for setting the predetermined voltage II that does not exceed the capacity of the C fan motor to the DC motor as the applied voltage is provided, the capacity of the DC fan motor is estimated to exceed the capacity of the DC fan motor when it is estimated that the capacity is exceeded. Since a predetermined voltage II that does not exceed is applied to the DC motor to operate the DC fan motor, it is possible to prevent the DC fan motor from operating in a state where the capacity of the DC fan motor is exceeded. It is possible to provide a DC fan motor with high air flow constant control.

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

【図1】本発明の第1実施例の風量一定制御DCファン
モータの構成図
FIG. 1 is a configuration diagram of a constant-air-volume control DC fan motor according to a first embodiment of the present invention.

【図2】同運転のためのプログラムの一例を示すフロー
チャート
FIG. 2 is a flowchart showing an example of a program for the same operation.

【図3】同要部回路図FIG. 3 is a circuit diagram of the main part of the same.

【図4】同第2実施例の風量一定制御DCファンモータ
の構成図
FIG. 4 is a block diagram of a DC fan motor for constant air volume control according to the second embodiment.

【図5】同運転のためのプログラムの一例を示すフロー
チャート
FIG. 5 is a flowchart showing an example of a program for the same operation.

【図6】同第3実施例の風量一定制御DCファンモータ
の構成図
FIG. 6 is a configuration diagram of a DC fan motor for constant air volume control according to the third embodiment.

【図7】同運転のためのプログラムの一例を示すフロー
チャート
FIG. 7 is a flowchart showing an example of a program for the same operation.

【図8】同第4実施例の風量一定制御DCファンモータ
の構成図
FIG. 8 is a block diagram of a DC fan motor for constant air flow control according to the fourth embodiment.

【図9】同運転のためのプログラムの一例を示すフロー
チャート
FIG. 9 is a flowchart showing an example of a program for the same operation.

【図10】従来のファンモータの構成図FIG. 10 is a configuration diagram of a conventional fan motor.

【図11】同印加電圧と回転数の関係を示すグラフFIG. 11 is a graph showing the relationship between the applied voltage and the rotational speed.

【図12】同運転特性を示す静圧−風量グラフFIG. 12 is a static pressure-air volume graph showing the same operating characteristics.

【図13】同要部回路図FIG. 13 is a circuit diagram of the main part of the same.

【符号の説明】[Explanation of symbols]

1 DCファンモータ 2 DCモータ 3 通電制御手段 4 回転数検出手段 5 規定回転数演算手段 6 印加電圧制御手段 7 風量指示手段 13 静圧演算手段 14 圧力損失増大報知手段 15 最大静圧記憶手段 33 能力オーバー報知手段 41 緊急通電制御手段 47 最大印加電圧制御手段 DESCRIPTION OF SYMBOLS 1 DC fan motor 2 DC motor 3 Energization control means 4 Rotation speed detection means 5 Specified rotation speed calculation means 6 Applied voltage control means 7 Air volume instruction means 13 Static pressure calculation means 14 Pressure loss increase notification means 15 Maximum static pressure storage means 33 Capacity Over notification means 41 Emergency energization control means 47 Maximum applied voltage control means

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】DCモータを搭載したDCファンモータ
と、前記DCモータに対する通電を制御する通電制御手
段と、この通電制御手段の動作より前記DCモータの運
転回転数を検出する回転数検出手段と、前記DCファン
モータの運転風量を指示する風量指示手段と、この風量
指示手段によって指示された風量で運転するための前記
DCモータへの印加電圧における規定回転数を演算する
規定回転数演算手段と、前記回転数検出手段によって検
出された運転回転数を前記規定回転数演算手段により求
められた規定回転数と同回転数になるよう前記DCモー
タの印加電圧を制御する印加電圧制御手段と、前記回転
数検出手段によって検出された運転回転数から前記DC
ファンモータにかかる静圧を演算する静圧演算手段と、
前記風量指示手段によって指示された風量における最大
静圧を記憶する最大静圧記憶手段と、前記静圧演算手段
により求められた静圧が前記最大静圧記憶手段に記憶さ
れている所定静圧以上を検知した時、圧力損失の増大を
知らせる圧力損失増大報知手段を配してなる風量一定制
御DCファンモータ。
1. A DC fan motor equipped with a DC motor, an energization control means for controlling energization of the DC motor, and a rotation speed detection means for detecting an operating speed of the DC motor based on the operation of the energization control means. An air volume instruction means for instructing an operating air volume of the DC fan motor, and a prescribed rotation speed computation means for computing a prescribed rotation speed in a voltage applied to the DC motor for operating at the air volume instructed by the air volume instruction means. An applied voltage control means for controlling the applied voltage of the DC motor so that the operating speed detected by the speed detecting means becomes the same speed as the specified speed obtained by the specified speed calculating means; From the operating speed detected by the speed detecting means, the DC
A static pressure calculating means for calculating the static pressure applied to the fan motor,
A maximum static pressure storage means for storing a maximum static pressure at the air volume instructed by the air volume instruction means, and a static pressure obtained by the static pressure calculation means is not less than a predetermined static pressure stored in the maximum static pressure storage means. A constant air volume control DC fan motor including pressure loss increase notifying means for notifying an increase in pressure loss when detected.
【請求項2】DCモータを搭載したDCファンモータ
と、前記DCモータに対する通電を制御する通電制御手
段と、この通電制御手段の動作より前記DCモータの運
転回転数を検出する回転数検出手段と、前記DCファン
モータの運転風量を指示する風量指示手段と、この風量
指示手段によって指示された風量で運転するための前記
DCモータへの印加電圧における規定回転数を演算する
規定回転数演算手段と、前記回転数検出手段によって検
出された運転回転数を前記規定回転数演算手段により求
められた規定回転数と同回転数になるよう前記DCモー
タの印加電圧を制御する印加電圧制御手段と、この印加
電圧制御手段が前記DCモータへの印加電圧を所定電圧
I以上に制御しようとしたとき、DCファンモータの能
力を超えたことを報知する能力オーバー報知手段を設け
た風量一定制御DCファンモータ。
2. A DC fan motor equipped with a DC motor, an energization control means for controlling energization of the DC motor, and a rotation speed detection means for detecting an operating speed of the DC motor based on the operation of the energization control means. An air volume instruction means for instructing an operating air volume of the DC fan motor, and a prescribed rotation speed computation means for computing a prescribed rotation speed in a voltage applied to the DC motor for operating at the air volume instructed by the air volume instruction means. An applied voltage control means for controlling the applied voltage of the DC motor so that the operating speed detected by the speed detecting means becomes the same speed as the specified speed obtained by the specified speed calculating means; When the applied voltage control means tried to control the applied voltage to the DC motor to be equal to or higher than the predetermined voltage I, it was reported that the capacity of the DC fan motor was exceeded. Air volume constant control DC fan motor provided with the ability over informing means for.
【請求項3】印加電圧制御手段がDCモータへの印加電
圧を所定電圧I以上に制御しようとしたとき、DCモー
タへの通電を停止する緊急通電制御手段を設けた請求項
1または請求項2記載の風量一定制御DCファンモー
タ。
3. The emergency energization control means for stopping energization of the DC motor when the applied voltage control means attempts to control the applied voltage to the DC motor to a predetermined voltage I or higher. DC fan motor with constant air flow control.
【請求項4】印加電圧制御手段がDCモータへの印加電
圧を所定電圧I以上に制御しようとしたとき、前記DC
モータへの印加電圧を所定電圧Iより低い所定電圧IIに
制御する最大印加電圧制御手段を配してなる請求項1ま
たは請求項2記載の風量一定制御DCファンモータ。
4. The DC when the applied voltage control means tries to control the applied voltage to the DC motor to a predetermined voltage I or higher.
The DC fan motor according to claim 1 or 2, further comprising maximum applied voltage control means for controlling a voltage applied to the motor to a predetermined voltage II lower than the predetermined voltage I.
JP5115733A 1993-05-18 1993-05-18 DC fan motor with constant air volume control Expired - Fee Related JP2945817B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5115733A JP2945817B2 (en) 1993-05-18 1993-05-18 DC fan motor with constant air volume control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5115733A JP2945817B2 (en) 1993-05-18 1993-05-18 DC fan motor with constant air volume control

Publications (2)

Publication Number Publication Date
JPH06335280A true JPH06335280A (en) 1994-12-02
JP2945817B2 JP2945817B2 (en) 1999-09-06

Family

ID=14669749

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5115733A Expired - Fee Related JP2945817B2 (en) 1993-05-18 1993-05-18 DC fan motor with constant air volume control

Country Status (1)

Country Link
JP (1) JP2945817B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012052743A (en) * 2010-09-01 2012-03-15 Mitsubishi Electric Corp Air-conditioning apparatus
CN109654055A (en) * 2018-12-19 2019-04-19 珠海格力电器股份有限公司 Detection method and detection device for wind pressure abnormity, fan and air conditioner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012052743A (en) * 2010-09-01 2012-03-15 Mitsubishi Electric Corp Air-conditioning apparatus
CN109654055A (en) * 2018-12-19 2019-04-19 珠海格力电器股份有限公司 Detection method and detection device for wind pressure abnormity, fan and air conditioner

Also Published As

Publication number Publication date
JP2945817B2 (en) 1999-09-06

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