JPH0768099A - Clothes dryer - Google Patents
Clothes dryerInfo
- Publication number
- JPH0768099A JPH0768099A JP5215582A JP21558293A JPH0768099A JP H0768099 A JPH0768099 A JP H0768099A JP 5215582 A JP5215582 A JP 5215582A JP 21558293 A JP21558293 A JP 21558293A JP H0768099 A JPH0768099 A JP H0768099A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- conduction time
- revolution number
- rotating drum
- rotary drum
- 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.)
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Links
Landscapes
- Control Of Washing Machine And Dryer (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、モータで回転駆動され
る回転ドラム内へ温風を循環して衣類を乾燥させる衣類
乾燥機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clothes dryer which circulates warm air in a rotary drum which is driven by a motor to dry clothes.
【０００２】[0002]
【従来の技術】近年、家庭用の衣類乾燥機は、回転ドラ
ムを回転駆動するモータを位相制御することによって、
電源周波数の５０Ｈｚ，６０Ｈｚ地域に共用できるサイ
クルフリー化が進んでいる。2. Description of the Related Art In recent years, household clothes dryers have been constructed by controlling the phase of a motor that rotationally drives a rotary drum.
Cycle-free technology, which can be shared in the 50Hz and 60Hz power source frequencies, is in progress.
【０００３】従来、この種の衣類乾燥機は、電源周波数
５０Ｈｚ、６０Ｈｚの異なる条件下で使用しても、回転
ドラムの回転数が同一になるように、回転ドラムの回転
駆動に用いるモータを位相制御している。すなわち、予
め電源周波数５０Ｈｚ，６０Ｈｚそれぞれにおいて、回
転ドラムの設定回転数ごとに位相を決めており、電源周
波数ごとに回転ドラムの設定回転数に応じた所定の位相
をモータに与えて、回転ドラムの回転数を制御するのが
一般的である。Conventionally, in this type of clothes dryer, the phase of the motor used for rotating the rotary drum is set so that the rotation speed of the rotary drum is the same even when used under different conditions of power source frequencies of 50 Hz and 60 Hz. Have control. That is, the phase is determined in advance for each set rotational speed of the rotating drum at each of the power supply frequencies 50 Hz and 60 Hz, and a predetermined phase corresponding to the set rotational speed of the rotating drum is given to the motor for each power supply frequency to provide the motor with a predetermined phase. It is common to control the rotation speed.
【０００４】[0004]
【発明が解決しようとする課題】このような従来の衣類
乾燥機では、通常の回転ドラム回転時において、回転ド
ラムの設定回転数を４０ｒｐｍから４５ｒｐｍに変更す
る場合、電源周波数と設定回転数で決められた所定の位
相をモータに与えていたので、回転ドラムの回転数が設
定の回転数に達するまでに、多くの時間を要するという
問題を有していた。また、電源電圧の変動や、回転ドラ
ム内の衣類の状態や量に対して、回転ドラムの回転数を
設定回転数に保つことは難しく、回転ドラムの回転が不
安定になってしまうという問題を有していた。In such a conventional clothes dryer, when the rotating speed of the rotating drum is changed from 40 rpm to 45 rpm during normal rotation of the rotating drum, it is determined by the power supply frequency and the setting rotation speed. Since the given predetermined phase is given to the motor, there is a problem that it takes a lot of time until the number of rotations of the rotary drum reaches the set number of rotations. In addition, it is difficult to keep the rotational speed of the rotating drum at the set rotational speed in response to fluctuations in the power supply voltage and the state and amount of clothes in the rotating drum, which causes the problem that the rotation of the rotating drum becomes unstable. Had.
【０００５】本発明は上記従来課題を解決するもので、
回転ドラムの回転数を設定回転数にまではやく制御し、
しかも、設定回転数に達した後は外乱に対して影響を受
けずに、回転ドラムの回転数を安定化させることを目的
としている。The present invention solves the above conventional problems.
The rotation speed of the rotating drum is quickly controlled to the set rotation speed,
Moreover, it is intended to stabilize the rotational speed of the rotating drum without being affected by disturbance after reaching the set rotational speed.
【０００６】[0006]
【課題を解決するための手段】本発明は上記目的を達成
するために、衣類を乾燥させる回転ドラムと、前記回転
ドラム内へ温風を循環させる送風手段と、前記回転ドラ
ム内への送風経路に設けた加熱手段と、前記送風手段ま
たは前記回転ドラムを回転駆動するモータと、前記モー
タに直列に接続したパワー半導体素子と、前記回転ドラ
ムまたは前記モータなどの回転数または回転周期を検知
する回転数検知手段と、前記回転ドラムまたはモータな
どの回転数または回転周期の変化量を検知する回転数変
化量検知手段と、前記回転ドラムまたはモータなどの回
転数または回転周期を設定する回転数設定手段と、前記
回転数検知手段の出力と前記回転数設定手段の出力とを
比較する回転数比較手段と、前記回転数比較手段の出力
と前記回転数変化量検知手段の出力により、前記パワー
半導体素子への導通時間の操作量を決める導通時間制御
手段とを備えたことを第１の課題解決手段としている。In order to achieve the above object, the present invention provides a rotating drum for drying clothes, an air blowing means for circulating warm air into the rotating drum, and an air blowing path into the rotating drum. A heating means provided in the motor, a motor for rotating the blower means or the rotary drum, a power semiconductor element connected in series to the motor, and a rotation for detecting the rotation speed or rotation cycle of the rotary drum or the motor. Number detecting means, rotation number change amount detecting means for detecting a change amount of rotation number or rotation cycle of the rotating drum or motor, and rotation number setting means for setting rotation number or rotation cycle of the rotating drum or motor And a rotation speed comparison means for comparing the output of the rotation speed detection means with the output of the rotation speed setting means, and the output of the rotation speed comparison means and the change in the rotation speed. The output of the sensing means, and the first means for solving problems that a conduction time control means for determining an operation amount of conduction time to the power semiconductor device.
【０００７】また、上記第１の解決手段に加えて、電源
周波数を判定する電源周波数判定手段を備え、導通時間
制御手段は、前記電源周波数判定手段で判定した電源周
波数によりパワー半導体素子への導通時間の操作量を変
えるようにしたことを第２の課題解決手段としている。In addition to the first solving means, a power supply frequency judging means for judging a power supply frequency is provided, and the conduction time controlling means conducts electricity to the power semiconductor element according to the power supply frequency judged by the power supply frequency judging means. The second problem solving means is to change the operation amount of time.
【０００８】さらに、上記第１の解決手段に加えて、導
通時間制御手段により決まる導通時間の操作量をモータ
の現在位相により補正する導通時間補正手段を備え、導
通時間制御手段は、前記導通時間補正手段の出力により
導通時間の操作量を補正するようにしたことを第３の課
題解決手段としている。Further, in addition to the first solving means, there is provided a conduction time correction means for correcting the operation amount of the conduction time determined by the conduction time control means according to the current phase of the motor, and the conduction time control means is provided for the conduction time. A third problem solving means is that the operation amount of the conduction time is corrected by the output of the correction means.
【０００９】[0009]
【作用】本発明の第１の課題解決手段により、回転数検
知手段により検知した回転ドラムの回転数と回転数設定
手段からの設定回転数との偏差を回転数比較手段で演算
し、一方、回転数変化量検知手段により回転ドラムの回
転数変化量を演算し、そして偏差と変化量とによりパワ
ー半導体素子の導通時間を操作してモータの回転数を制
御するため、回転ドラムの回転数を目標回転数までオー
バーシュートが少なく制御でき、しかも、外乱に対して
も影響を受けずに制御することができる。According to the first means for solving the problems of the present invention, the deviation between the rotational speed of the rotary drum detected by the rotational speed detecting means and the set rotational speed from the rotational speed setting means is calculated by the rotational speed comparing means. The rotation speed change amount detecting means calculates the rotation speed change amount of the rotating drum, and the conduction time of the power semiconductor element is controlled by the deviation and the change amount to control the rotation speed of the motor. It is possible to control to a target rotation speed with less overshoot, and also to control without being affected by disturbance.
【００１０】また、第２の課題解決手段により、電源周
波数の違いによらず回転ドラムを設定回転数に早く制御
することができる。Further, by the second means for solving the problems, the rotating drum can be quickly controlled to the set rotation speed regardless of the difference in the power supply frequency.
【００１１】さらに、第３の課題解決手段により、回転
ドラムを駆動するモータの現在位相によらず、回転ドラ
ムを設定回転数にはやく制御することができる。Further, according to the third means for solving the problems, the rotating drum can be quickly controlled to the set rotational speed regardless of the current phase of the motor for driving the rotating drum.
【００１２】[0012]
【実施例】以下、本発明の一実施例を図１および図２を
参照しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
【００１３】図に示すように、回転ドラム１は被乾燥物
（衣類）を収容して乾燥させるもので、熱交換型両翼フ
ァン（送風手段）２により回転ドラム１内に熱風を循環
させる。熱交換型両翼ファン２は、回転ドラム１内に熱
風を循環させると同時に外部からの空気を取り入れてフ
ァンを冷却し、回転ドラム１の循環空気を除湿する。Ｐ
ＴＣヒータ（加熱手段）３は、回転ドラム１への送風経
路、すなわち循環空気取り入れ口に配設して循環空気を
加熱する。フィルター４は熱交換型両翼ファン２の送風
経路、すなわち回転ドラム１内の空気の排気口に設けて
いる。糸屑などによりフィルター４が目詰まりすると、
送風量が減ってＰＴＣヒータ３の加熱電力が減少し、乾
燥時間が長くなり乾燥効率も低下する。As shown in the figure, a rotary drum 1 is for accommodating and drying an object to be dried (clothes), and hot air is circulated in the rotary drum 1 by a heat exchange type double-blade fan (blowing means) 2. The heat exchange type double-blade fan 2 circulates hot air in the rotating drum 1 and at the same time takes in air from the outside to cool the fan and dehumidify the circulating air in the rotating drum 1. P
The TC heater (heating means) 3 is provided in the air blowing path to the rotary drum 1, that is, in the circulating air intake, and heats the circulating air. The filter 4 is provided in the ventilation path of the heat exchange type double-blade fan 2, that is, in the air outlet of the rotary drum 1. If the filter 4 is clogged with lint, etc.,
The amount of air blown is reduced, the heating power of the PTC heater 3 is reduced, the drying time is lengthened, and the drying efficiency is also reduced.
【００１４】モータ５は、回転ドラム１と熱交換型両翼
ファン２を回転駆動するもので、モータ５の回転数を制
御することにより回転ドラム１と熱交換型両翼ファン２
の回転数を制御でき、ＰＴＣヒータ３の発熱量を制御で
き電流制御が可能となる。温度検知手段６は、ＰＴＣヒ
ータ３の吸い込み空気温度を検出するものである。回転
検知手段７は、回転ドラム１の回転状態を検知するもの
で、回転ドラム１に磁石８を３〜６個取り付け、磁気セ
ンサ（図示せず）を本体部に固定して回転ドラム１の回
転状態を検知する。The motor 5 rotationally drives the rotary drum 1 and the heat exchanging type double-blade fan 2. By controlling the rotational speed of the motor 5, the rotary drum 1 and the heat exchanging type double-blade fan 2 are controlled.
It is possible to control the number of rotations of the PTC heater 3, the amount of heat generated by the PTC heater 3, and the current control. The temperature detecting means 6 detects the temperature of the air sucked into the PTC heater 3. The rotation detection means 7 detects the rotation state of the rotary drum 1. Three to six magnets 8 are attached to the rotary drum 1, and a magnetic sensor (not shown) is fixed to the main body to rotate the rotary drum 1. Detect the condition.
【００１５】回転制御部９はモータ５の回転数を制御す
るもので、モータ５に直列に接続した双方向性サイリス
タなどのパワー半導体素子９０と、回転検知手段７の出
力により回転ドラム１の回転数を検知する回転数検知手
段９１と、回転数検知手段９１で回転ドラム１の回転数
を検知するたびにその変化量を検知する回転数変化量検
知手段９２と、回転ドラム１の回転数を設定する回転数
設定手段９３と、回転数検知手段９１の出力と回転数設
定手段９３の出力とを比較する回転数比較手段９４と、
回転数変化量検知手段９２の出力と回転数比較手段９４
の出力によりパワー半導体素子９０の導通時間の操作量
を決める導通時間制御手段９５と、電源周波数を判定す
る電源周波数判定手段９６と、導通時間制御手段９５に
より決まる導通時間の操作量をモータ５の現在位相によ
り補正する導通時間補正手段９７とで構成している。The rotation control unit 9 controls the number of rotations of the motor 5. The power semiconductor element 90 such as a bidirectional thyristor connected in series to the motor 5 and the rotation detection unit 7 output the rotation of the rotary drum 1. The number of revolutions detecting means 91 for detecting the number of revolutions, the number of revolutions changing amount detecting means 92 for detecting the amount of variation each time the number of revolutions of the rotating drum 1 is detected by the number of revolutions detecting means 91, and the number of revolutions of the rotating drum 1 are set. Rotating speed setting means 93, rotating speed comparing means 94 for comparing the output of the rotating speed detecting means 91 with the output of the rotating speed setting means 93,
The output of the rotation speed change amount detection means 92 and the rotation speed comparison means 94
Of the electric conduction time of the motor 5, the conduction time control means 95 for determining the operation amount of the conduction time of the power semiconductor element 90, the power supply frequency determination means 96 for determining the power supply frequency, and the operation amount of the conduction time determined by the conduction time control means 95. It is composed of a conduction time correction means 97 for correcting the current phase.
【００１６】回転制御部９では、回転数検知手段９１に
より検知した回転ドラム１の回転数と回転数設定手段９
３からの設定回転数との偏差を回転数比較手段９４で演
算し、一方、回転数変化量検知手段９２により回転ドラ
ム１の回転数変化量を演算し、そして偏差と変化量とに
よりパワー半導体素子９０の導通時間を操作量θだけ操
作してモータ５の回転数を制御する。モータ５の回転数
を制御する方法としては位相制御が考えられる。In the rotation control section 9, the rotation speed of the rotary drum 1 detected by the rotation speed detection means 91 and the rotation speed setting means 9
The deviation from the set rotational speed from 3 is calculated by the rotational speed comparison means 94, while the rotational speed change amount detecting means 92 calculates the rotational speed change amount of the rotary drum 1, and the deviation and the change amount are used to calculate the power semiconductor. The rotation time of the motor 5 is controlled by operating the conduction time of the element 90 by the operation amount θ. Phase control is conceivable as a method of controlling the rotation speed of the motor 5.
【００１７】図３(a)〜(d)は、モータ５の回転数を制御
する位相制御を示すタイミングチャートである。図３
(a)に示すような交流波形に対して、ゼロクロス信号発
生手段８０により図３(b)に示すようなゼロクロス信号
を発生し、このゼロクロス信号を基準にして、図３(c)
に示すように、時間Ｔaだけ遅れた駆動信号によりワー
半導体素子９０をオンさせることにより、モータ５に
は、図３(d)に示すように、（Ｔb＋Ｔc）の期間だけ電
圧が印加される。すなわち、パワー半導体素子９０への
導通時間をθだけ操作して時間Ｔaを変えることによ
り、モータ５の回転数を制御するものである。FIGS. 3A to 3D are timing charts showing phase control for controlling the rotation speed of the motor 5. Figure 3
With respect to the AC waveform shown in (a), the zero-cross signal generating means 80 generates a zero-cross signal as shown in FIG. 3 (b).
As shown in FIG. 3, by turning on the power semiconductor element 90 by the drive signal delayed by the time Ta, the voltage is applied to the motor 5 for the period of (Tb + Tc) as shown in FIG. 3D. That is, the rotation speed of the motor 5 is controlled by changing the time Ta by operating the conduction time to the power semiconductor element 90 by θ.
【００１８】ここで、つぎのゼロクロス信号が入力され
るまでパワー半導体素子９０をオンさせると、ゼロクロ
ス信号がずれた場合のつぎの半波が全部オンして位相制
御できなくなるという不具合を避けるために、つぎのゼ
ロクロス信号より時間Ｔｃだけ前でオフするようにして
いる。時間Ｔcは、電源周波数判定手段９６により判定
された結果により、電源周波数ごとに決められた固定し
た時間である。ここで、偏差と変化量により、パワー半
導体素子９０への導通時間の操作量を決めるルールテー
ブルの一例を（表１）に示している。ただし、（表１）
において、導通時間の操作量の単位はマイクロ秒であ
る。Here, in order to avoid the problem that if the power semiconductor element 90 is turned on until the next zero-cross signal is input, all the next half-waves are turned on and the phase cannot be controlled when the zero-cross signal is deviated. , Is turned off before the next zero-cross signal by time Tc. The time Tc is a fixed time determined for each power supply frequency based on the result determined by the power supply frequency determination means 96. Here, an example of a rule table that determines the operation amount of the conduction time to the power semiconductor element 90 based on the deviation and the change amount is shown in (Table 1). However, (Table 1)
In, the unit of the operation amount of the conduction time is microsecond.
【００１９】[0019]
【表１】 [Table 1]
【００２０】設定回転数と現在回転数の偏差と回転数の
変化量で直接パワー半導体素子９０への導通時間を操作
するので、設定回転数に対して回転ドラム１を素早く制
御することができる。たとえば、回転ドラム１の現在回
転数が設定回転数より高く、変化量が増加しているとき
は、パワー半導体素子９０への導通時間を短くし、現在
回転数が設定回転数より低く、変化量が減少していると
きは、パワー半導体素子９０への導通時間を長くする。
また、現在回転数が設定回転数より高く、変化量が減少
しているときや、現在回転数が設定回転数より低く、変
化量が増加しているときは、偏差と変化量に応じてパワ
ー半導体素子９０への導通時間を操作する。Since the conduction time to the power semiconductor element 90 is directly controlled by the deviation between the set rotational speed and the present rotational speed and the variation of the rotational speed, the rotary drum 1 can be quickly controlled with respect to the set rotational speed. For example, when the current rotational speed of the rotary drum 1 is higher than the set rotational speed and the amount of change is increasing, the conduction time to the power semiconductor element 90 is shortened, and the current rotational speed is lower than the set rotational speed. Is decreasing, the conduction time to the power semiconductor element 90 is lengthened.
When the current speed is higher than the set speed and the amount of change is decreasing, or when the current speed is lower than the set speed and the amount of change is increasing, the power is changed according to the deviation and the amount of change. The conduction time to the semiconductor element 90 is manipulated.
【００２１】電流検知手段１０は、カレントトランス１
１と電流−電圧変換回路１２とで構成し、ＰＴＣヒータ
３の入力電流を検知し、その出力を電流比較設定手段１
３に入力する。電流比較設定手段１３は、ＰＴＣヒータ
３の設定電流値と電流検知手段１０の出力とを比較し、
その出力を回転数設定手段９３に入力して設定回転数を
制御する。ここで、回転数設定手段９３により設定され
る設定回転数は、ＰＴＣヒータ３の電流が所定の電流値
以上または以下にならない風量になるように設定する。
なお、１５は交流電源であり、リレーの接点１６ａ、１
６ｂを介してＰＴＣヒータ３ａ、３ｂにそれぞれ直列に
接続している。The current detecting means 10 is a current transformer 1.
1 and the current-voltage conversion circuit 12, detects the input current of the PTC heater 3, and outputs the output from the current comparison setting means 1.
Enter in 3. The current comparison setting means 13 compares the set current value of the PTC heater 3 with the output of the current detection means 10,
The output is input to the rotation speed setting means 93 to control the set rotation speed. Here, the set rotation speed set by the rotation speed setting means 93 is set so that the current of the PTC heater 3 does not exceed or fall below a predetermined current value.
Reference numeral 15 is an AC power source, and relay contacts 16a, 1
The PTC heaters 3a and 3b are connected in series via 6b.
【００２２】上記構成において図４から図６を参照しな
がら動作を説明する。図４のステップ３０で初期設定し
た後、ステップ３１でモータ５をオンし、ステップ３２
で起動シーケンスを実行する。つぎに、ステップ３３で
ＰＴＣヒータ３をオンし、ＰＴＣヒータ３の入力電流が
安定するまで待つために、ステップ３４で定時間（たと
えば１分）遅延する。ステップ３５からステップ３８ま
では、ＰＴＣヒータ３の入力電流が設定電流値となるよ
うに設定回転数を制御する電流制御（ステップ３５）
と、回転検知手段７により回転検知信号が検知されるた
びに回転ドラム１が設定回転数になるように制御する回
転制御（ステップ３７）を運転終了まで行う。The operation of the above structure will be described with reference to FIGS. After initial setting in step 30 of FIG. 4, the motor 5 is turned on in step 31, and step 32
To execute the startup sequence. Next, in step 33, the PTC heater 3 is turned on, and a constant time (for example, 1 minute) is delayed in step 34 to wait until the input current of the PTC heater 3 stabilizes. From step 35 to step 38, current control for controlling the set rotation speed so that the input current of the PTC heater 3 becomes the set current value (step 35).
Then, each time the rotation detection signal is detected by the rotation detection means 7, the rotation control (step 37) for controlling the rotating drum 1 to reach the set rotation speed is performed until the operation ends.
【００２３】図５は、回転制御ルーチンの動作フロチャ
ートを表したものである。まず、ステップ７０で電源周
波数判定手段９６により電源周波数が５０Ｈｚか６０Ｈ
ｚかを判定する。ステップ７１で回転周期Ｔを検出し、
ステップ７２で回転周期の変化量ΔＴを検出する。ステ
ップ７３では回転数比較手段９４により設定回転周期Ｔ
Sと現在の回転周期Ｔとの偏差Ｔｅを演算する。ステッ
プ７４で、回転周期の偏差Ｔｅと変化量ΔＴとに基づ
き、導通時間制御手段９５によりパワー半導体素子９０
を導通するまでの時間Ｔaを決定する。FIG. 5 shows an operation flow chart of the rotation control routine. First, in step 70, the power supply frequency determination means 96 determines whether the power supply frequency is 50 Hz or 60 H.
Determine if it is z. In step 71, the rotation cycle T is detected,
In step 72, the change amount ΔT of the rotation cycle is detected. At step 73, the rotation speed comparison means 94 sets the set rotation cycle T.
The deviation Te between S and the current rotation cycle T is calculated. In step 74, the power semiconductor device 90 is controlled by the conduction time control means 95 based on the deviation Te of the rotation cycle and the change amount ΔT.
The time Ta required to conduct the current is determined.
【００２４】また、ステップ７５で、ステップ７０で行
った電源周波数判定に基づき、パワー半導体素子９０を
導通するまでの時間ＴaをＴa'に補正する。この導通す
るまでの時間の補正は、たとえば、５０Ｈｚ時において
は、導通時間制御手段９５で決定したパワー半導体素子
９０への操作量を１.２倍し、６０Ｈｚ時においてはそ
のまま補正しない。In step 75, the time Ta until the power semiconductor element 90 is rendered conductive is corrected to Ta 'based on the power supply frequency determination made in step 70. The correction of the time until the conduction occurs is, for example, at 50 Hz, the operation amount to the power semiconductor element 90 determined by the conduction time control means 95 is multiplied by 1.2, and at 60 Hz, it is not corrected as it is.
【００２５】さらに、ステップ７６で、導通時間補正手
段９７の出力により、モータ５の現在出力中の位相角に
応じて、パワー半導体素子９０を導通するまでの時間Ｔ
a'をＴa"に補正する。この導通するまでの時間は、位相
制御でのモータ位相角と回転ドラム１の回転数を示す特
性より補正する。すなわち、図６に示すように、位相角
によって同じだけの位相角を操作しても、回転ドラム１
の回転数は同じようには変化しなので、たとえば、位相
角３０〜６０度または１２０〜１５０度のときは、操作
量を２倍に補正し、位相角が６０〜１２０度のときは、
そのままの操作量でパワー半導体素子９０の導通時間を
操作する。Further, at step 76, the time T until the power semiconductor element 90 is brought into conduction by the output of the conduction time correction means 97 in accordance with the phase angle of the motor 5 currently being output.
a'is corrected to Ta ". This time until conduction is corrected by the characteristic indicating the motor phase angle in the phase control and the rotation speed of the rotary drum 1. That is, as shown in FIG. Even if the same phase angle is operated, the rotary drum 1
Since the number of revolutions of changes in the same way, for example, when the phase angle is 30 to 60 degrees or 120 to 150 degrees, the operation amount is corrected to double, and when the phase angle is 60 to 120 degrees,
The conduction time of the power semiconductor element 90 is manipulated with the amount of manipulation as it is.
【００２６】なお、本実施例では、回転ドラム１と熱交
換型両翼ファン２を１個のモータ５で駆動する場合を示
したが、それそれを駆動するためのモータを設ける２モ
ータ方式でも同様の効果がある。In this embodiment, the rotary drum 1 and the heat exchanging type double-blade fan 2 are driven by one motor 5, but a two-motor system having a motor for driving the same is also the same. Has the effect of.
【００２７】[0027]
【発明の効果】以上の実施例から明らかなように本発明
によれば、衣類を乾燥させる回転ドラムと、前記回転ド
ラム内へ温風を循環させる送風手段と、前記回転ドラム
内への送風経路に設けた加熱手段と、前記送風手段また
は前記回転ドラムを回転駆動するモータと、前記モータ
に直列に接続したパワー半導体素子と、前記回転ドラム
または前記モータなどの回転数または回転周期を検知す
る回転数検知手段と、前記回転ドラムまたはモータなど
の回転数または回転周期の変化量を検知する回転数変化
量検知手段と、前記回転ドラムまたはモータなどの回転
数または回転周期を設定する回転数設定手段と、前記回
転数検知手段の出力と前記回転数設定手段の出力とを比
較する回転数比較手段と、前記回転数比較手段の出力と
前記回転数変化量検知手段の出力により、前記パワー半
導体素子への導通時間の操作量を決める導通時間制御手
段とを備えたから、回転ドラムおよび送風手段の回転数
を設定回転数までオーバーシュートが少なく制御でき、
しかも、外乱に対しても影響を受けずに制御することが
できる。また同時に、衣類乾燥機の消費電流を一定値以
下に保つようにドラムおよび送風手段の回転数を設定す
ることができて、ブレーカが動作しないようにできる。As is apparent from the above embodiments, according to the present invention, a rotating drum for drying clothes, an air blowing means for circulating warm air into the rotating drum, and an air blowing path into the rotating drum. A heating means provided in the motor, a motor for rotating the blower means or the rotary drum, a power semiconductor element connected in series to the motor, and a rotation for detecting the rotation speed or rotation cycle of the rotary drum or the motor. Number detecting means, rotation number change amount detecting means for detecting a change amount of rotation number or rotation cycle of the rotating drum or motor, and rotation number setting means for setting rotation number or rotation cycle of the rotating drum or motor And a rotation speed comparison means for comparing the output of the rotation speed detection means with the output of the rotation speed setting means, and the output of the rotation speed comparison means and the rotation speed change amount. The output of known means, the power from and a conduction time control means for determining an operation amount of the conduction time of the semiconductor device can be controlled overshoot is small to set the rotational speed of the rotational speed of the rotary drum and the blower unit,
Moreover, it is possible to perform control without being affected by disturbance. At the same time, the rotation speeds of the drum and the blowing means can be set so that the current consumption of the clothes dryer is kept below a certain value, and the breaker can be prevented from operating.
【００２８】また、電源周波数を判定する電源周波数判
定手段を備え、導通時間制御手段は、前記電源周波数判
定手段で判定した電源周波数によりパワー半導体素子へ
の導通時間の操作量を変えるようにしたから、電源周波
数の違いに影響されることなく、回転ドラムおよび送風
手段の回転数を制御できる。Further, the power supply frequency determining means for determining the power supply frequency is provided, and the conduction time control means changes the operation amount of the conduction time to the power semiconductor element according to the power supply frequency determined by the power supply frequency determining means. The rotation speeds of the rotary drum and the air blower can be controlled without being affected by the difference in power supply frequency.
【００２９】さらに、導通時間制御手段により決まる導
通時間の操作量をモータの現在位相により補正する導通
時間補正手段を備え、導通時間制御手段は、前記導通時
間補正手段の出力により導通時間の操作量を補正するよ
うにしたから、モータの現在位相に関係なく、すなわ
ち、電源電圧のばらつき、回転ドラムの重さのばらつ
き、回転ドラム内の布量の違いなどに影響されることな
く、回転ドラムの回転数を設定回転数にはやく制御する
ことができる。Further, there is provided a conduction time correction means for correcting the operation amount of the conduction time determined by the conduction time control means by the current phase of the motor, and the conduction time control means is operated by the output of the conduction time correction means. Therefore, regardless of the current phase of the motor, that is, without being affected by variations in the power supply voltage, variations in the weight of the rotating drum, differences in the amount of cloth in the rotating drum, etc. The rotation speed can be quickly controlled to the set rotation speed.
【図１】本発明の一実施例の衣類乾燥機のブロック図FIG. 1 is a block diagram of a clothes dryer according to an embodiment of the present invention.
【図２】同衣類乾燥機の断面図FIG. 2 is a sectional view of the clothes dryer.
【図３】(a)〜(d) 同衣類乾燥機の位相制御を示すタイ
ミングチャート3A to 3D are timing charts showing phase control of the clothes dryer.
【図４】同衣類乾燥機の動作を説明するフローチャートFIG. 4 is a flowchart explaining the operation of the clothes dryer.
【図５】同衣類乾燥機の回転制御ルーチンの動作フロチ
ャートFIG. 5 is an operation flowchart of a rotation control routine of the clothes dryer.
【図６】同衣類乾燥機のモータの位相角とドラム回転数
の相関を示す図FIG. 6 is a view showing a correlation between a motor phase angle of the clothes dryer and a drum rotation speed.
１ 回転ドラム ２ 熱交換型両翼ファン（送風手段） ３ ＰＴＣヒータ（加熱手段） ５ モータ ９０ パワー半導体素子 ９１ 回転数検知手段 ９２ 回転数変化量検知手段 ９３ 回転数設定手段 ９４ 回転数比較手段 ９５ 導通時間制御手段 DESCRIPTION OF SYMBOLS 1 rotating drum 2 heat exchange type double-blade fan (blowing means) 3 PTC heater (heating means) 5 motor 90 power semiconductor element 91 rotation speed detection means 92 rotation speed change amount detection means 93 rotation speed setting means 94 rotation speed comparison means 95 conduction Time control means
Claims (3)
転ドラム内へ温風を循環させる送風手段と、前記回転ド
ラム内への送風経路に設けた加熱手段と、前記送風手段
または前記回転ドラムを回転駆動するモータと、前記モ
ータに直列に接続したパワー半導体素子と、前記回転ド
ラムまたは前記モータなどの回転数または回転周期を検
知する回転数検知手段と、前記回転ドラムまたはモータ
などの回転数または回転周期の変化量を検知する回転数
変化量検知手段と、前記回転ドラムまたはモータなどの
回転数または回転周期を設定する回転数設定手段と、前
記回転数検知手段の出力と前記回転数設定手段の出力と
を比較する回転数比較手段と、前記回転数比較手段の出
力と前記回転数変化量検知手段の出力により、前記パワ
ー半導体素子への導通時間の操作量を決める導通時間制
御手段とを備えた衣類乾燥機。1. A rotary drum for drying clothes, a blower for circulating warm air into the rotary drum, a heating means provided in a blower path into the rotary drum, and the blower or the rotary drum. A motor that is rotationally driven, a power semiconductor element connected in series to the motor, a rotation speed detection unit that detects a rotation speed or a rotation cycle of the rotary drum or the motor, a rotation speed of the rotary drum or the motor, or the like. Rotational speed change amount detecting means for detecting an amount of change in rotational cycle, rotational speed setting means for setting the rotational speed or rotational cycle of the rotating drum or motor, output of the rotational speed detecting means and the rotational speed setting means To the power semiconductor element by the output of the rotation speed comparison means and the output of the rotation speed change amount detection means. A clothes dryer having a conduction time control means for determining the operation amount of the total time.
段を備え、導通時間制御手段は、前記電源周波数判定手
段で判定した電源周波数によりパワー半導体素子への導
通時間の操作量を変えるようにした請求項１記載の衣類
乾燥機。2. A power supply frequency determination means for determining a power supply frequency, wherein the conduction time control means changes the operation amount of the conduction time to the power semiconductor element according to the power supply frequency determined by the power supply frequency determination means. Item 1. The clothes dryer.
の操作量をモータの現在位相により補正する導通時間補
正手段を備え、導通時間制御手段は、前記導通時間補正
手段の出力により導通時間の操作量を補正するようにし
た請求項１記載の衣類乾燥機。3. A conduction time correction means for correcting the operation amount of the conduction time determined by the conduction time control means according to the current phase of the motor, and the conduction time control means, by the output of the conduction time correction means, the operation amount of the conduction time. The clothes dryer according to claim 1, wherein the clothes are corrected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21558293A JP3254841B2 (en) | 1993-08-31 | 1993-08-31 | Clothes dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21558293A JP3254841B2 (en) | 1993-08-31 | 1993-08-31 | Clothes dryer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0768099A true JPH0768099A (en) | 1995-03-14 |
| JP3254841B2 JP3254841B2 (en) | 2002-02-12 |
Family
ID=16674828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21558293A Expired - Lifetime JP3254841B2 (en) | 1993-08-31 | 1993-08-31 | Clothes dryer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3254841B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112746473A (en) * | 2019-10-29 | 2021-05-04 | 青岛海尔滚筒洗衣机有限公司 | Drying method of clothes dryer and clothes dryer |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733187B (en) * | 2009-12-15 | 2012-05-09 | 成都利君实业股份有限公司 | Load optimizing control system of roller press |
-
1993
- 1993-08-31 JP JP21558293A patent/JP3254841B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112746473A (en) * | 2019-10-29 | 2021-05-04 | 青岛海尔滚筒洗衣机有限公司 | Drying method of clothes dryer and clothes dryer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3254841B2 (en) | 2002-02-12 |
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