JPH07255197A - Method of controlling the number of revolutions of dc motor cooling fan - Google Patents
Method of controlling the number of revolutions of dc motor cooling fanInfo
- Publication number
- JPH07255197A JPH07255197A JP6045390A JP4539094A JPH07255197A JP H07255197 A JPH07255197 A JP H07255197A JP 6045390 A JP6045390 A JP 6045390A JP 4539094 A JP4539094 A JP 4539094A JP H07255197 A JPH07255197 A JP H07255197A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- cooling fan
- motor
- armature
- revolutions
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】直流モータの加熱を防ぐために設
けられた冷却ファンの制御方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a cooling fan provided to prevent heating of a DC motor.
【０００２】[0002]
【従来の技術】従来、直流モータの冷却ファンはモータ
ーの加熱を防ぐために取り付けられており、常に定格回
転で運転されている。しかし周囲温度変化によって冷却
ファンの冷却効果が変化するため、直流モータの整流子
部の温度変化が起こる。このため周囲温度が下がった場
合でも定格回転であることから過冷却になり、整流子の
荒損の原因になっていた。2. Description of the Related Art Conventionally, a cooling fan for a DC motor is mounted to prevent heating of the motor and is always operated at a rated speed. However, since the cooling effect of the cooling fan changes depending on the ambient temperature change, the temperature of the commutator portion of the DC motor changes. For this reason, even when the ambient temperature drops, the rated rotation is performed, resulting in overcooling, which causes rough damage to the commutator.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、上述
の欠点を除去し、周囲温度が変化した場合でも整流子の
温度を一定に保ち直流モータの整流子の状態を良好に保
つことを可能とする制御方法である。SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the above-mentioned drawbacks and to keep the commutator temperature constant even when the ambient temperature changes and to keep the DC motor commutator in good condition. This is a possible control method.
【０００４】[0004]
【課題を解決するための手段】上述の目的を達成するた
めの本発明の要旨は、直流モータに信号出力付き非接触
型温度センサーを取付け、直流モータの整流子の温度を
測定し温度センサの信号を冷却ファンの制御盤内に取り
付けられたインバータに送ることにより冷却ファンの回
転数を可変させて直流モータの整流子部の温度を６０℃
から９０℃の範囲に保ち冷却効果を適正にすることによ
って整流子部の荒損を防止するための制御方法である。
本発明に使用する温度センサーは変換器を使用して出力
を出すものでもよい。The gist of the present invention for achieving the above object is to attach a non-contact type temperature sensor with a signal output to a DC motor, measure the temperature of a commutator of the DC motor, and measure the temperature of the temperature sensor. By sending a signal to the inverter installed in the control panel of the cooling fan, the rotation speed of the cooling fan can be varied to increase the temperature of the commutator of the DC motor to 60 ° C.
This is a control method for preventing rough damage of the commutator portion by keeping the temperature within the range from 90 ° C. to 90 ° C. and making the cooling effect appropriate.
The temperature sensor used in the present invention may use a converter to produce an output.
【０００５】[0005]
【実施例】本発明を図示の実施例に基づいて詳細に説明
する。第１図は本発明に係る制御方法の全体構成図であ
る。本実施例では直流モータの整流子の温度を測定する
ために信号出力付き非接触型温度センサー１を取り付け
信号出力付き温度センサ１から冷却ファンの制御盤内に
取り付けられたインバータ２に温度測定結果の信号を送
り、インバータによって冷却ファン３の回転数を変化さ
せる。冷却ファン３の回転数が変化することによって直
流モータ４の整流子の温度を一定に保つことが可能とな
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail based on the illustrated embodiments. FIG. 1 is an overall configuration diagram of a control method according to the present invention. In this embodiment, in order to measure the temperature of the commutator of the DC motor, a non-contact type temperature sensor 1 with a signal output is attached, and the temperature measurement result from the temperature sensor 1 with a signal output to the inverter 2 attached in the control panel of the cooling fan is measured. Is sent and the rotation speed of the cooling fan 3 is changed by the inverter. By changing the rotation speed of the cooling fan 3, the temperature of the commutator of the DC motor 4 can be kept constant.
【０００６】[0006]
【発明の効果】上述したように本発明に係る冷却ファン
の制御方法においては周囲温度が変化しても直流モータ
の整流子の温度が一定となるため整流子部の状態を一定
に保つことができる。As described above, in the cooling fan control method according to the present invention, even if the ambient temperature changes, the temperature of the commutator of the DC motor becomes constant, so that the state of the commutator portion can be kept constant. it can.
【図１】全体構成図。FIG. 1 is an overall configuration diagram.
１ 信号出力付き非接触型温度センサ ２ インバータ ３ 冷却ファン ４ 直流モータ 1 Non-contact temperature sensor with signal output 2 Inverter 3 Cooling fan 4 DC motor
Claims (1)
めに信号出力付き非接触型温度センサーを取付けし、温
度センサからの信号によりインバータを使用して冷却フ
ァンの回転数を自動制御する制御方法。1. A control for mounting a non-contact type temperature sensor with a signal output for measuring a temperature of a commutator of a DC motor, and automatically controlling a rotation speed of a cooling fan by using an inverter according to a signal from the temperature sensor. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6045390A JPH07255197A (en) | 1994-03-16 | 1994-03-16 | Method of controlling the number of revolutions of dc motor cooling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6045390A JPH07255197A (en) | 1994-03-16 | 1994-03-16 | Method of controlling the number of revolutions of dc motor cooling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07255197A true JPH07255197A (en) | 1995-10-03 |
Family
ID=12717950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6045390A Pending JPH07255197A (en) | 1994-03-16 | 1994-03-16 | Method of controlling the number of revolutions of dc motor cooling fan |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07255197A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014515958A (en) * | 2011-05-19 | 2014-07-07 | ヴェー ウント ハー デンタルヴェルク ビュールモース ゲーエムベーハー | Medical, in particular dental, instrument with temperature measuring means |
| EP2524666B1 (en) | 2011-05-19 | 2017-05-10 | W & H Dentalwerk Bürmoos GmbH | Medical, in particular dental, handpiece with a temperature measuring device |
-
1994
- 1994-03-16 JP JP6045390A patent/JPH07255197A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014515958A (en) * | 2011-05-19 | 2014-07-07 | ヴェー ウント ハー デンタルヴェルク ビュールモース ゲーエムベーハー | Medical, in particular dental, instrument with temperature measuring means |
| US9526585B2 (en) | 2011-05-19 | 2016-12-27 | W&H Dentalwerk Bürmoos GmbH | Medical or dental instrument with a temperature-measuring device |
| EP2524666B1 (en) | 2011-05-19 | 2017-05-10 | W & H Dentalwerk Bürmoos GmbH | Medical, in particular dental, handpiece with a temperature measuring device |
| US10653399B2 (en) | 2011-05-19 | 2020-05-19 | W&H Dentalwerk Bürmoos GmbH | Medical or dental instrument with a temperature-measuring device |
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