JPH07108114B2 - Fan motor control circuit - Google Patents
Fan motor control circuitInfo
- Publication number
- JPH07108114B2 JPH07108114B2 JP61251775A JP25177586A JPH07108114B2 JP H07108114 B2 JPH07108114 B2 JP H07108114B2 JP 61251775 A JP61251775 A JP 61251775A JP 25177586 A JP25177586 A JP 25177586A JP H07108114 B2 JPH07108114 B2 JP H07108114B2
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- air volume
- contact
- tap
- fan 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.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は風量切換用のタップを複数有する空調機用単相
コンデンサモータ駆動回路に係り、特にコンデンサモー
タ駆動中の電磁音の発生防止に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single-phase condenser motor drive circuit for an air conditioner having a plurality of taps for air flow switching, and more particularly to prevention of generation of electromagnetic noise during drive of the condenser motor.
従来の装置は、特開昭55-118550に記載のように複数の
タップに対してコンデンサモータの駆動のみに着目して
いた為コンデンサは１個設けられていた。しかし、各タ
ップの最適磁界の点については配慮されていなかった。In the conventional device, as described in Japanese Patent Laid-Open No. 55-118550, only one capacitor is provided for a plurality of taps because only the driving of the capacitor motor is focused on. However, no consideration was given to the optimum magnetic field of each tap.
上記従来技術はコンデンサモータの各タップに対する最
適磁界について配慮がされておらず、通常タップの抵抗
値が最小なる点で使用され、かつモータ効率も最良とな
る様にコンデンサモータも設計されている。この為、他
のタップにおいては抵抗値が増大するのに対し、挿入コ
ンデンサ容量は一定の為、モータ磁界の歪が大きくな
り、補助巻線電流と主巻線電流の位相差が軽負荷時には
大きくなり、過負荷時には小さくなって、いずれの場合
も無効電流値が増大すると共に電源周波数の２倍、４倍
の高調波が発生しやすくなる為、これらの歪エネルギー
が電磁音として発生するという問題があった。The prior art described above does not take into consideration the optimum magnetic field for each tap of the capacitor motor, and is usually used in the point that the resistance value of the tap is minimum, and the capacitor motor is designed so that the motor efficiency is also the best. Therefore, while the resistance value increases in other taps, the insertion capacitor capacity is constant, the distortion of the motor magnetic field becomes large, and the phase difference between the auxiliary winding current and the main winding current becomes large when the load is light. The problem is that the distortion energy is generated as electromagnetic noise because the reactive current value increases in both cases, and the reactive current value increases and harmonics that are twice or four times the power supply frequency are easily generated. was there.
本発明の目的は、この電磁音の発生を防止することにあ
る。An object of the present invention is to prevent the generation of this electromagnetic sound.
上記目的は、少なくとも極低速回転と他の回転数用の各
タップごとに専用のコンデンサを設けることにより達成
される。The above object is achieved by providing a dedicated capacitor for each tap for at least extremely low speed rotation and other rotation speeds.
複数のタップを有するコンデンサモータは共通タップと
他のタップ間で、モータ駆動用コイルがあり、このコイ
ルは個々に電圧を加えたとき電流が流れ磁界が発生す
る。同様に駆動用に設けられた補助コイル部にも磁界が
発生する。空調機の送風機用コンデンサモータでは、通
常、抵抗値が最小値のタップの磁界を真円に近づけて、
すなわち補助巻線電流と主巻線電流の位相差が90°とな
るように設計され、コンデンサ容量も決められることが
多い。しかし、他のタップにおいては抵抗値が増大し、
真円磁界とするために必要とするコンデンサ容量は増大
する反面、挿入コンデンサ容量が一定の為、磁界が歪
む。この傾向はコンデンサ容量を設定したコイル抵抗と
の差が大きくなる程顕著となる。この為、各タップご
と、もしくは、コンデンサ容量設定コイル抵抗との差が
最も大きいタップのみ専用に、コンデンサを挿入するこ
とにより、磁界は真円化し、電磁音の発生量は非常に小
さくなる。A capacitor motor having a plurality of taps has a motor drive coil between a common tap and another tap, and when a voltage is applied to each of the coils, a current flows and a magnetic field is generated. Similarly, a magnetic field is generated in the auxiliary coil portion provided for driving. In a condenser motor for blowers of air conditioners, usually, the magnetic field of the tap with the minimum resistance value is brought close to a perfect circle,
That is, it is designed so that the phase difference between the auxiliary winding current and the main winding current is 90 °, and the capacitor capacity is often determined. However, in other taps the resistance value increases,
While the capacity of the capacitor required to form a perfect circular magnetic field increases, the magnetic capacity is distorted because the capacity of the inserted capacitor is constant. This tendency becomes more remarkable as the difference from the coil resistance for which the capacitor capacity is set increases. Therefore, by inserting a capacitor for each tap or only for the tap having the largest difference from the capacitor capacitance setting coil resistance, the magnetic field becomes a perfect circle, and the amount of electromagnetic noise generated becomes extremely small.
以下、本発明の一実施例を第１図により説明する。単相
コンデンサモータ１はHi（高速）・Me（中速）・Lo（低
速）・SLo（極低速）の４個のタップを有し、主コイル
のZHiタップコイル2Hi,ZMのタップコイル2Me,ZLoタップ
コイル2LoおよびZSLoタップコイル2SLoは接続点PiとP2
の間に直列に接続されている。An embodiment of the present invention will be described below with reference to FIG. The single-phase capacitor motor 1 has four taps of Hi (high speed), Me (medium speed), Lo (low speed), and SLo (extremely low speed). The main coil ZHi tap coil 2Hi, ZM tap coil 2Me, ZLo tap coil 2Lo and ZSLo tap coil 2SLo have connection points P i and P 2
Are connected in series between.
前記コイル2Hiと2Meの間の制御点P3に接続された補助コ
イル2oと前記接続点Piとの間には、切換用リレー接点６
とコンデンサC1,C2が接続されている。A switching relay contact 6 is provided between the auxiliary coil 2o connected to the control point P3 between the coils 2Hi and 2Me and the connection point Pi.
And capacitors C1 and C2 are connected.
前記コンデンサC1とC2は並列に接続されており、コンデ
ンサC1は接点6aに接続され、コンデンサC2は接点6bに接
続されている。そして、コンデンサC2はコンデンサC1よ
り大きい容量となっている。The capacitors C 1 and C 2 are connected in parallel, the capacitor C 1 is connected to the contact 6a, and the capacitor C 2 is connected to the contact 6b. The capacitor C 2 has a larger capacity than the capacitor C 1 .
５は切換用リレーコイルで、制御用リレーコイル4SLoの
接点3SLoと直列に接続点P4とP5の間に接続されている。
3Hi,3Meおよび3Loは制御用リレーコイル4Hi,4Meおよび4
Loの接点で、接点3Hiは前記接続点P3とP6との間に接続
されており、接点3Meは接続点P7とP8の間に、接点3Loは
接続点P9とP10の間にそれぞれ接続されている。もう１
つの接点60は前記切換用リレー接点６と連動する接点
で、接続点P2とP11の間に接続されている。5 is a switching relay coil is connected between the connection point P 4 and P 5 in contact 3SLo series of control relay coil 4SLo.
3Hi, 3Me and 3Lo are control relay coils 4Hi, 4Me and 4
A contact of Lo, contact 3Hi is connected between the connection points P 3 and P 6 , contact 3Me is between connection points P 7 and P 8 , and contact 3Lo is between connection points P 9 and P 10 . Are connected to each other. Another one
One contact 60 is a contact that interlocks with the switching relay contact 6 and is connected between the connection points P 2 and P 11 .
前記コンデンサC1はHi,MeおよびLoのモータコイル共通
のコンデンサで切換用リレー接点６の接点6aが接続され
ているとき作用する。したがって、このときは他の接点
6bは非接続となるのでコンデンサC2は作用しない。ま
た、同時に接点60も非接続となる。The capacitor C 1 is a capacitor common to Hi, Me and Lo motor coils and operates when the contact 6a of the switching relay contact 6 is connected. Therefore, at this time, the other contact
Since 6b is not connected, the capacitor C 2 has no effect. At the same time, the contact 60 is also disconnected.
該接点60が接続状態のときは切換用リレー接点６の接点
6bが接続状態となる。The contact of the switching relay contact 6 when the contact 60 is in the connected state
6b is connected.
図示してないが、Me・Loタップにも駆動信号取り出し用
リレーを設けて、各タップごとに専用コンデンサを作動
させてもよい。Although not shown, a drive signal extracting relay may be provided in the Me / Lo taps to activate a dedicated capacitor for each tap.
９はファンモータスイッチである。9 is a fan motor switch.
而して、ファンモータスイッチ９を入れると、ファンモ
ータ１はHi（高速）、Me（中速）、Lo（低速）およびSL
o（極低速）のいずれかが操作者によって選択され制御
用リレーコイル4Hi〜4SLoが励磁されると、制御用リレ
ーの接点3Hi〜3SLoのいずれかが接続状態となり回転す
る。ファンモータ１の回転がHi,MeおよびLoの範囲のと
きは切換用リレー接点６は接点6a側に接続され、コンデ
ンサ７を介して回転磁界が補正される。そして、ファン
モータ１の回転がSLo（極低速）に選択された場合のみ
前記切換用リレー接点６は接点6b側に接続されると共
に、もう１つの接点60も接続状態となってSLo（極低
速）回転を行う。このとき容量の大きいコンデンサC2を
介して回転磁界は補正される。When the fan motor switch 9 is turned on, the fan motor 1 is Hi (high speed), Me (medium speed), Lo (low speed) and SL.
When any one of o (extremely low speed) is selected by the operator and the control relay coils 4Hi to 4SLo are excited, any one of the contact 3Hi to 3SLo of the control relay is connected and rotates. When the rotation of the fan motor 1 is in the range of Hi, Me and Lo, the switching relay contact 6 is connected to the contact 6a side, and the rotating magnetic field is corrected via the capacitor 7. Then, only when the rotation of the fan motor 1 is selected to SLo (extremely low speed), the switching relay contact 6 is connected to the contact 6b side, and the other contact 60 is also in the connected state and SLo (extremely low speed). ) Rotate. At this time, the rotating magnetic field is corrected via the large-capacity capacitor C 2 .
本実施例によればHi（高速）,Me（中速）,Lo（低速）用
に接続するコンデンサとSLo（極低速）用に接続するコ
ンデンサと別々に設けて、補助巻線電流と主巻線電流の
位相差が90°となるように大きいコンデンサ容量を組込
んだので、LSo（極低速）の場合でも真円に近い回転磁
界を得ることができる。According to this embodiment, a capacitor connected for Hi (high speed), Me (medium speed), Lo (low speed) and a capacitor connected for SLo (extremely low speed) are separately provided, and auxiliary winding current and main winding are provided. Since a large capacitor capacity is incorporated so that the phase difference of the line current is 90 °, a rotating magnetic field close to a perfect circle can be obtained even in the case of LSo (extremely low speed).
本発明によれば、極低速回転を有する複数のタップを有
する単相コンデンサモータの回転磁界として真円に近い
磁界が得られる為、電磁音の発生を非常に小さくでき
る。According to the present invention, a magnetic field close to a perfect circle can be obtained as a rotating magnetic field of a single-phase capacitor motor having a plurality of taps having extremely low speed rotation, so that the generation of electromagnetic noise can be extremely reduced.
第１図は本発明のコンデンサモータ囲りの回路図であ
る。 １……ファンモータ、２……モータコイル、３……制御
用リレーａ接点、４……制御用リレーコイル、５……切
換用リレーコイル、６……切換用リレーＣ接点 添字 Hi・Me・Lo・SLo……ファンモータのタップ。FIG. 1 is a circuit diagram of a capacitor motor surrounding the present invention. 1 …… Fan motor, 2 …… Motor coil, 3 …… Control relay a contact, 4 …… Control relay coil, 5 …… Switching relay coil, 6 …… Switching relay C contact Subscripts Hi ・ Me ・Lo / SLo …… Fan motor tap.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 花田 正道 静岡県清水市村松390番地 株式会社日立 製作所清水工場内 (72)発明者 佐藤 一郎 静岡県清水市村松390番地 株式会社日立 製作所清水工場内 (56)参考文献 特開 昭58−79496（ＪＰ，Ａ) 特開 昭58−29393（ＪＰ，Ａ) 実開 昭47−23608（ＪＰ，Ｕ) 実開 昭58−37797（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masamichi Hanada 390 Muramatsu, Shimizu City Shizuoka Prefecture, Hitachi Ltd. Shimizu Plant (72) Inventor Ichiro Sato 390 Muramatsu Shimizu City, Shizuoka Prefecture Hitachi Ltd. Shimizu Plant ( 56) References JP-A-58-79496 (JP, A) JP-A-58-29393 (JP, A) Actual opening 47-23608 (JP, U) Actual opening 58-37797 (JP, U)
Claims (1)
モータの巻線に設けられ、該複数の風量切換用タップの
うち抵抗値が最小となる風量切換用タップの磁界を真円
に近づけるべく容量が決められた第１のコンデンサが補
助巻線と主巻線との間に接続されたファンモータの制御
回路において、前記複数の風量切換用タップのうち抵抗
値が最大となる風量切換用タップの磁界を真円に近づけ
るべく容量が決められた第２のコンデンサと、該抵抗値
が最大となる風量切換用タップが前記複数の風量切換用
タップの中から選択されたとき前記第１のコンデンサに
代えて前記第２のコンデンサを補助巻線と主巻線との間
に接続するコンデンサ切換手段とを備えることを特徴と
するファンモータの制御回路。1. A plurality of air volume switching taps are provided on a winding of a single-phase capacitor motor, and the magnetic fields of the air volume switching taps having the smallest resistance value among the plurality of air volume switching taps are close to a perfect circle. In a control circuit of a fan motor in which a first capacitor having a determined capacity is connected between an auxiliary winding and a main winding, an air volume switching tap having a maximum resistance value among the plurality of air volume switching taps. Second capacitor whose capacity is determined so as to bring the magnetic field of the coil into a perfect circle, and the air volume switching tap having the maximum resistance value is selected from the plurality of air volume switching taps. In place of the above, a control circuit for a fan motor, comprising: capacitor switching means for connecting the second capacitor between the auxiliary winding and the main winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61251775A JPH07108114B2 (en) | 1986-10-24 | 1986-10-24 | Fan motor control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61251775A JPH07108114B2 (en) | 1986-10-24 | 1986-10-24 | Fan motor control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63107489A JPS63107489A (en) | 1988-05-12 |
| JPH07108114B2 true JPH07108114B2 (en) | 1995-11-15 |
Family
ID=17227735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61251775A Expired - Fee Related JPH07108114B2 (en) | 1986-10-24 | 1986-10-24 | Fan motor control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07108114B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4228858A1 (en) * | 1992-08-29 | 1994-03-03 | Emmerich Roehrnbacher | Device for speed control of AC or three-phase motors |
| CN111380202B (en) * | 2020-03-23 | 2021-06-04 | 珠海格力电器股份有限公司 | Equipment noise reduction method and device and air purifier |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5120403Y2 (en) * | 1971-04-02 | 1976-05-28 | ||
| JPS5829393A (en) * | 1981-08-12 | 1983-02-21 | Hitachi Ltd | Capacitor motor |
| JPS5879496A (en) * | 1981-11-02 | 1983-05-13 | Hitachi Ltd | Condenser motor |
-
1986
- 1986-10-24 JP JP61251775A patent/JPH07108114B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63107489A (en) | 1988-05-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |