JPH08182892A - Clothes drying machine - Google Patents

Abstract

PURPOSE: To constitute a clothes drying machine for drying clothes by supplying hot air into a rotary drum rotationally driven by a motor in such a manner that the machine is used in a small hermetically closed room, actuates temp. control at the rapid timing after the start of operation and ends the drying in the optimum drying time according to the amt. and wetting degrees of the clothes without undrying even if the number of times to turn a heating means off increases. CONSTITUTION: The rotary drum and a heat exchange type double winged fan are rotationally driven by the motor 5. The blasting route to the rotary drum is provided with the PTC heater 3 and is provided with a second thermistor 8 to detect the sucked air temp. of the PTC heater 3. The max. value in the arbitrary period of the second thermistor 8 is detected by a max. temp. detecting means 9, and further, the ambient temp. is detected by an ambient temp. detecting means 10. This clothes drying machine is so constituted that the remaining drying operation time is corrected by a remaining drying time correcting means 14 from the outputs of the max. value detecting means 9 and the ambient temp. detecting means 10.

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、モータで回転駆動され
る回転ドラム内へ温風を送り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 for sending warm air into 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広く普及
し、被乾燥物の種類に関係なく乾燥むらがなく乾燥でき
ることが求められている。2. Description of the Related Art In recent years, household clothes dryers have become widespread, and it is required that they can be dried without unevenness in drying regardless of the kind of material to be dried.

【０００３】従来、この種の衣類乾燥機は、衣類を乾燥
させる回転ドラム内へ温風を循環し、回転ドラム内温度
を検知する排気温度検知手段と、回転ドラム内温度と加
熱手段の吸気温度の温度差を検知する温度差検知手段と
を備え、通常は図１２の減率乾燥期間に示すように、温
度差検知手段により得られる差温の変化率が所定値以上
となった場合に、残りの乾燥時間を所定値に設定するも
のが一般的である。なお、図１２で曲線ａは排気温度検
知手段の検知温度を示しており、曲線ｂは吸気温度を示
している。Conventionally, this type of clothes dryer circulates warm air into a rotary drum for drying clothes and detects exhaust temperature of the rotary drum, an internal temperature of the rotary drum and an intake temperature of the heating means. And a temperature difference detecting means for detecting the temperature difference of the temperature difference, and normally when the rate of change of the temperature difference obtained by the temperature difference detecting means is equal to or more than a predetermined value, as shown in the decreasing rate drying period of FIG. In general, the remaining drying time is set to a predetermined value. Note that, in FIG. 12, a curve a shows the temperature detected by the exhaust gas temperature detecting means, and a curve b shows the intake air temperature.

【０００４】しかし、回転ドラム内の衣類が少量の場合
や大容量であっても生乾きの場合には、図１３に示すよ
うに、回転ドラム内の温度が高温になりやすく、熱によ
り衣類が傷みやすくなるのを防ぐために所定の温度Ｔｘ
に達すると、図１３の期間Ｔ１に示すように、所定の温
度Ｔｙ以下に下がるまで加熱手段を停止制御している。
この場合には、残り乾燥運転時間を図１２のように減率
乾燥状態からは判断しにくいため、図１３のように温度
調節（以下、温調という）動作発生時の時間ｔａと温調
周期（Ｔ１＋Ｔ２）により残り乾燥時間を設定するのが
一般的であった。However, when the amount of clothes in the rotary drum is small, or when the clothes are large in volume and dry, as shown in FIG. 13, the temperature in the rotary drum tends to be high, and the clothes are damaged by the heat. Predetermined temperature Tx to prevent the increase
When the temperature reaches, the heating means is stopped and controlled until the temperature falls below a predetermined temperature Ty, as shown in a period T1 in FIG.
In this case, since it is difficult to judge the remaining drying operation time from the reduced rate drying state as shown in FIG. 12, the time ta and the temperature control cycle at the time of temperature adjustment (hereinafter referred to as temperature adjustment) operation are generated as shown in FIG. It was general to set the remaining drying time by (T1 + T2).

【０００５】[0005]

【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、使用環境温度が高い場合に温調が働きやす
くなるので、このようなときにたくさんの衣類を入れら
れても十分に乾燥するように、温調が働いてからの乾燥
運転時間を長く設定しなければならないが、さらに、密
閉された小さな部屋で使用される場合は、早いタイミン
グで温調が働き、しかも加熱手段をオフする回数も増え
るので、温調が働いてからの乾燥運転時間が不十分で未
乾燥になるという問題があった。In such a conventional clothes dryer, temperature control tends to work when the ambient temperature is high. Therefore, even if a lot of clothes are put in such a dryer, the clothes will be dried sufficiently. As described above, it is necessary to set a long dry operation time after the temperature control works, but when it is used in a small enclosed room, the temperature control works at an early timing and the heating means is turned off. Since the number of times of heating is increased, there is a problem that the drying operation time after the temperature control works is insufficient and the drying is not performed.

【０００６】本発明は上記課題を解決するもので、密閉
された小さな部屋で使用される場合でも未乾燥となるこ
となく、衣類の量や湿り度合に応じて最適な乾燥時間で
終了するようにすることを目的としている。The present invention solves the above-mentioned problems. Even when it is used in a closed small room, it does not become undried, and it is completed in an optimum drying time according to the amount of clothes and the degree of wetness. The purpose is to do.

【０００７】[0007]

【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
ドラム内へ温風を送る送風手段と、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、前記加熱手段の
吸気温度を検知する吸気温度検知手段と、前記吸気温度
検知手段の任意の期間の最高値を検知する最高値検知手
段と、周囲温度を検知する周囲温度検知手段と、前記最
高値検知手段の出力と前記周囲温度検知手段の出力によ
り残り乾燥運転時間を補正する残り乾燥時間補正手段と
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 sending warm air into the rotating drum, and an air blowing path into the rotating drum. The heating means provided, the motor for rotationally driving the blower means or the rotary drum, the intake air temperature detection means for detecting the intake air temperature of the heating means, and the maximum value of the intake air temperature detection means for a given period are detected. A maximum value detecting means; an ambient temperature detecting means for detecting an ambient temperature; and a remaining drying time correcting means for correcting the remaining drying operation time by the output of the maximum value detecting means and the output of the ambient temperature detecting means. Is the first means for solving the problem.

【０００８】また、上記第１の課題解決手段の周囲温度
検知手段は、運転初期の吸気温度検知手段で検知した温
度を周囲温度とすることを第２の課題解決手段としてい
る。The ambient temperature detecting means of the first problem solving means uses the temperature detected by the intake air temperature detecting means at the initial stage of operation as the ambient temperature as the second problem solving means.

【０００９】また、上記第１の課題解決手段に加えて、
回転ドラム内温度を検知する排気温度検知手段と、前記
排気温度検知手段と吸気温度検知手段のそれぞれで検知
した温度の差を検知する温度差検知手段と、前記排気温
度検知手段の出力と前記温度差検知手段の出力とを入力
し運転初期に送風運転を行う運転制御手段を備え、周囲
温度検知手段は、運転初期の送風運転中に、前記排気温
度検知手段で検知した排気温度の変化率と吸気温度検知
手段で検知した吸気温度の変化率と排気温度あるいは吸
気温度とから周囲温度を演算するようにしたことを第３
の課題解決手段としている。In addition to the first means for solving the above problems,
Exhaust temperature detecting means for detecting the temperature inside the rotating drum, temperature difference detecting means for detecting a difference between the temperatures detected by the exhaust temperature detecting means and the intake air temperature detecting means, an output of the exhaust temperature detecting means and the temperature The output of the difference detection means and the operation control means for performing a blowing operation in the initial stage of operation are provided, and the ambient temperature detecting means, during the blowing operation in the initial stage of operation, the change rate of the exhaust temperature detected by the exhaust temperature detecting means and the Thirdly, the ambient temperature is calculated from the rate of change of the intake air temperature detected by the intake air temperature detecting means and the exhaust gas temperature or the intake air temperature.
Is used as a means for solving the problem.

【００１０】また、上記第３の課題解決手段の運転制御
手段は、所定時間以内か、または排気温度検知手段で検
知される温度が所定温度以下でかつ温度差検知手段で検
知される温度差が所定温度以下になったときに、運転初
期に行う送風運転を停止して乾燥運転に切り換えるよう
にしたことを第４の課題解決手段としている。In the operation control means of the third problem solving means, the temperature detected by the exhaust temperature detection means is within a predetermined time or less than a predetermined temperature and the temperature difference detected by the temperature difference detection means is A fourth problem solving means is that when the temperature becomes lower than a predetermined temperature, the blowing operation performed in the initial operation is stopped and switched to the drying operation.

【００１１】[0011]

【作用】本発明は上記した第１の課題解決手段により、
密閉された小さな部屋で使用され運転開始後早いタイミ
ングで温調が働き、そして加熱手段のオフする回数が増
えたとしても、加熱手段の吸気温度の最高値と周囲温度
とにより、設置されている環境に応じた適切な時間だけ
乾燥運転時間を補正することができるので、未乾燥とな
ることなく、衣類の量や湿り度合に応じて最適な乾燥時
間で終了するようにできる。According to the first means for solving the above problems, the present invention provides:
Even if the temperature is controlled in an enclosed small room and the temperature control works early after the start of operation, and the number of times the heating means is turned off increases, it is installed depending on the maximum intake temperature of the heating means and the ambient temperature. Since the drying operation time can be corrected by an appropriate time according to the environment, it is possible to finish the drying operation in an optimum time according to the amount of clothes and the degree of wetness without becoming undried.

【００１２】また、第２の課題解決手段により、運転初
期の加熱手段がオンしていない状態での加熱手段の吸気
温度を周囲温度とするので、簡単でかつ正確に周囲温度
を検知することができる。Further, according to the second problem solving means, the intake air temperature of the heating means in the state where the heating means is not turned on at the initial stage of operation is set to the ambient temperature, so that the ambient temperature can be detected easily and accurately. it can.

【００１３】また、第３の課題解決手段により、連続使
用されることにより回転ドラム内が温まった状態で運転
が開始されたとしても、まず送風運転を行い、その期間
の排気温度の変化率と吸気温度の変化率と排気温度ある
いは吸気温度とから周囲温度を演算することにより、正
確な周囲温度を求めることができる。Further, according to the third means for solving the problems, even if the operation is started in a state where the inside of the rotating drum is warmed due to continuous use, the air blowing operation is first performed and the change rate of the exhaust gas temperature during that period is By calculating the ambient temperature from the rate of change of the intake air temperature and the exhaust temperature or the intake air temperature, the accurate ambient temperature can be obtained.

【００１４】さらに、第４の課題解決手段により、所定
時間（たとえば、５分）以内か、または排気温度が所定
温度以下でかつ温度差検知手段で検知される温度差が所
定温度以下になったときに、運転初期に行う送風運転を
停止して乾燥運転に切り換えるので、周囲温度を検知す
るための送風運転は最長でも５分であり、運転開始から
乾燥運転終了までのトータル運転時間が長くなりすぎる
ということはない。Further, according to the fourth problem solving means, the exhaust gas temperature is within a predetermined time (for example, 5 minutes) or less, and the temperature difference detected by the temperature difference detecting means is below the predetermined temperature. At this time, the blowing operation performed at the beginning of the operation is stopped and switched to the drying operation, so the blowing operation for detecting the ambient temperature is 5 minutes at the longest, and the total operating time from the start of operation to the end of drying operation becomes longer. It's not too late.

【００１５】[0015]

【実施例】以下、本発明の第１の実施例を図１および図
２を参照しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.

【００１６】図２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内に温風を
循環させる。熱交換型両翼ファン２は、回転ドラム１内
に温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。ＰＴＣ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、循環空気中の糸屑などを回収するようにしてい
る。As shown in FIG. 2, the rotary drum 1 accommodates and dries an article to be dried (clothes), and warm air is circulated in the rotary drum 1 by a heat exchange type double-blade fan (blowing means) 2. Let The heat exchange type double-blade fan 2 circulates warm air in the rotary drum 1 and at the same time takes in air from the outside to cool the fan and dehumidify the circulating air in the rotary drum 1. The PTC heater (heating means) 3 is arranged 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 air blowing path of the heat exchange type double-blade fan 2, that is, in the air exhaust port of the rotary drum 1 so as to collect the thread waste in the circulating air.

【００１７】モータ５は、回転ドラム１と熱交換型両翼
ファン２を回転駆動させる。第１のサーミスタ（排気温
度検知手段）７は、熱交換型両翼ファン２で熱交換され
る前の空気温度を検知するものであり、第２のサーミス
タ（吸気温度検知手段）８は、熱交換型両翼ファン２で
熱交換された後でＰＴＣヒータ３に吸気される前の空気
温度を検知するものである。The motor 5 rotationally drives the rotary drum 1 and the heat exchanging type double-blade fan 2. The first thermistor (exhaust gas temperature detection means) 7 detects the air temperature before heat exchange by the heat exchange type double-blade fan 2, and the second thermistor (intake air temperature detection means) 8 exchanges heat. The temperature of the air before being taken into the PTC heater 3 after the heat is exchanged by the double-sided fan 2 is detected.

【００１８】つぎに、図１に示すように、最高値検知手
段９は、第２のサーミスタ８の温度データを入力して所
定期間の最高値を検知するものであり、周囲温度検知手
段１０は、第１のサーミスタ７と第２のサーミスタ８の
温度データとから使用されている周囲温度を検知するも
のであり、温度差検知手段１１は第１のサーミスタ７と
第２のサーミスタ８の温度差を検知する。Next, as shown in FIG. 1, the maximum value detecting means 9 inputs the temperature data of the second thermistor 8 to detect the maximum value for a predetermined period, and the ambient temperature detecting means 10 operates. , The ambient temperature used is detected from the temperature data of the first thermistor 7 and the second thermistor 8, and the temperature difference detecting means 11 detects the temperature difference between the first thermistor 7 and the second thermistor 8. To detect.

【００１９】残り乾燥時間設定手段１２は、温調が働い
た時点で、計時手段１３で計時された運転開始からの時
間と、温度差検知手段１１で検知された第１のサーミス
タ７と第２のサーミスタ８の温度差に基づいて、衣類の
量や湿り度合に応じた最適な残り乾燥時間を設定する。
残り乾燥時間補正手段１４は、最高値検知手段９で検知
された第２のサーミスタ８の温度データの所定期間の最
高値と、周囲温度検知手段１０で検知された周囲温度と
に基づいて、密閉された小さな部屋で使用されていても
未乾燥がないように残り乾燥時間を＋補正するものであ
る。The remaining drying time setting means 12 is the time from the start of operation, which is timed by the time measuring means 13, and the first thermistor 7 and the second thermistor 7 which are detected by the temperature difference detecting means 11, when the temperature control is performed. Based on the temperature difference of the thermistor 8, the optimum remaining drying time is set according to the amount of clothes and the degree of wetness.
The remaining dry time correction means 14 is hermetically sealed based on the maximum value of the temperature data of the second thermistor 8 detected by the maximum value detection means 9 for a predetermined period and the ambient temperature detected by the ambient temperature detection means 10. Even if it is used in a small room, the remaining dry time is corrected so that there is no undrying.

【００２０】運転制御手段１５は、第１のサーミスタ７
の出力と温度差検知手段１１の出力とを入力し、運転初
期に送風運転を行い、残り乾燥時間設定手段１２や残り
乾燥時間補正手段１４などの情報に基づいて、モータ４
を駆動するためのモータ駆動素子１６と、２つに分割さ
れたＰＴＣヒータ３の一方がヒータ３ａ、他方がヒータ
３ｂとし、それぞれに直列に接続されたリレー１７ａお
よびリレー１７ｂとを制御しながら乾燥運転を制御す
る。The operation control means 15 includes the first thermistor 7
Of the motor 4 and the output of the temperature difference detection means 11 are input to perform a blowing operation in the initial stage of the operation, and the motor 4
And a motor drive element 16 for driving the PTC heater 3 which is divided into two, one of which is a heater 3a and the other of which is a heater 3b, and a relay 17a and a relay 17b connected in series to each of them are controlled and dried. Control driving.

【００２１】なお、１８は電源スイッチであり、１９は
商用周波数電源である。また、最高値検知手段９、周囲
温度検知手段１０、温度差検知手段１１、残り乾燥時間
設定手段１２、計時手段１３、残り乾燥時間補正手段１
４、運転制御手段１５はマイクロコンピュータ２０で容
易に実現することができる。Reference numeral 18 is a power switch, and 19 is a commercial frequency power supply. Further, the maximum value detecting means 9, the ambient temperature detecting means 10, the temperature difference detecting means 11, the remaining drying time setting means 12, the time measuring means 13, and the remaining drying time correcting means 1
4. The operation control means 15 can be easily realized by the microcomputer 20.

【００２２】上記構成において図３から図７を参照しな
がら動作を説明する。図３は、乾燥運転中に温調が働い
たときの乾燥運転時間を設定する場合の動作フローチャ
ートで、まず、ステップ４０で運転を開始し、ステップ
４１で初期設定を行いＴ2max＝０とし、ステップ４２で
モータ５をオンして回転ドラム１と熱交換型両翼ファン
２を回転駆動する。ステップ４３で２０秒の遅延の後、
ステップ４４で室温（周囲温度）検知を行い、検知した
室温をＴａとする。室温検知の方法は後述する。The operation of the above structure will be described with reference to FIGS. 3 to 7. FIG. 3 is an operation flowchart for setting the drying operation time when the temperature control works during the drying operation. First, the operation is started in step 40, the initialization is performed in step 41, and T2max = 0 is set, At 42, the motor 5 is turned on to rotationally drive the rotary drum 1 and the heat exchange type double-blade fan 2. After a 20 second delay in step 43,
At step 44, the room temperature (ambient temperature) is detected, and the detected room temperature is defined as Ta. The method of detecting the room temperature will be described later.

【００２３】そして、ステップ４５からステップ４７ま
でで、リレー１７ａをオンしてヒータ２ａに通電し、３
０秒遅延の後リレー１７ｂをオンしてヒータ２ｂに通電
する。ステップ４８からステップ４９まででは、第２の
サーミスタ８で検知した温度がそれまでの最高値より大
きいかどうかを判定し、大きければ更新してその値をＴ
2maxとする。ステップ５０で温調、すなわち第１のサー
ミスタ７で検知した温度が一定値（たとえば、６８℃）
以上になったかどうかを判定し、温調が働かなければス
テップ５１で運転開始から５時間経過したかどうかを判
定し、経過していなければステップ４８に戻り、経過し
ていればステップ５４へ進み乾燥運転を終了する。Then, in steps 45 to 47, the relay 17a is turned on to energize the heater 2a, and 3
After a delay of 0 second, the relay 17b is turned on to energize the heater 2b. In steps 48 to 49, it is judged whether or not the temperature detected by the second thermistor 8 is larger than the maximum value so far, and if it is larger, it is updated and the value is set to T.
Set to 2max. The temperature is adjusted in step 50, that is, the temperature detected by the first thermistor 7 is a constant value (for example, 68 ° C.).
If the temperature control does not work, it is determined in step 51 whether or not 5 hours have elapsed from the start of operation. If it has not elapsed, the process returns to step 48. If it has elapsed, the process proceeds to step 54. Finish the drying operation.

【００２４】ステップ５０で温調が働けば、ステップ５
２で遅延時間ｔｄと補正時間ｔｈを設定する。ここで遅
延時間ｔｄは、計時手段１３により計時した運転開始か
らの時間と、温度差検知手段１１により検知した第１の
サーミスタ７と第２のサーミスタ８の温度差に基づい
て、残り乾燥時間設定手段１２により設定した衣類の量
や湿り度合に応じた最適な残り乾燥運転時間であり、補
正時間ｔｈは、残り乾燥時間補正手段１４により第２の
サーミスタ８の最高値Ｔ2maxと室温Ｔａに基づいて、密
閉された小さな部屋で使用されていても未乾燥がないよ
うに残り乾燥時間を＋補正する時間である。引き続きス
テップ５３で（ｔｄ＋ｔｈ）だけ乾燥運転を行った後、
ステップ５４へ進み乾燥運転を終了する。If the temperature control works in step 50, step 5
At 2, the delay time td and the correction time th are set. Here, the delay time td is the remaining drying time setting based on the time from the start of operation, which is measured by the time measuring means 13, and the temperature difference between the first thermistor 7 and the second thermistor 8 detected by the temperature difference detecting means 11. It is the optimum remaining drying operation time according to the amount of clothes and the degree of wetness set by the means 12, and the correction time th is based on the maximum value T2max of the second thermistor 8 and the room temperature Ta by the remaining drying time correction means 14. Even if it is used in a closed small room, it is the time to correct the remaining drying time so that there is no undrying. Then, in step 53, after performing a drying operation for (td + th),
The process proceeds to step 54 to end the drying operation.

【００２５】つぎに、残り乾燥時間を設定するときの動
作を図４を参照しながら説明すると、図４は、乾燥運転
中に温調が働いた場合の乾燥運転終了までの第１のサー
ミスタ７の検知温度ＴＨ１、第２のサーミスタ８の検知
温度ＴＨ２および第１のサーミスタ７と第２のサーミス
タ８の温度差Ｔｓの経時変化を示したものである。ここ
で、ｔonは運転開始から温調が働くまでの時間であり、
Ｔsonは温調が働いたときの温度差である。また、Ｔ2ma
xは第２のサーミスタ８の検知温度ＴＨ２の最高値であ
る。したがって、時間ｔonにて、残り乾燥時間設定手段
１２は、時間ｔonと温度差Ｔｓに基づいて遅延時間ｔｄ
を設定する。Next, the operation of setting the remaining drying time will be described with reference to FIG. 4. In FIG. 4, the first thermistor 7 until the end of the drying operation when the temperature control is performed during the drying operation. 3 shows changes over time in the detected temperature TH1, the detected temperature TH2 of the second thermistor 8 and the temperature difference Ts between the first thermistor 7 and the second thermistor 8. Here, ton is the time from the start of operation until the temperature control works,
Tson is the temperature difference when the temperature control works. Also, T2ma
x is the maximum value of the detected temperature TH2 of the second thermistor 8. Therefore, at the time ton, the remaining drying time setting means 12 delays the delay time td based on the time ton and the temperature difference Ts.
Set.

【００２６】一般的に回転ドラム１内の衣類が乾いてき
た状態、すなわち乾燥運転終了間際では、回転ドラム１
内の熱容量は小さくなり、乾いた空気は温まりやすく冷
めやすくなるので、第１のサーミスタ７の検知温度ＴＨ
１は、温調温度Ｔｘからのオーバーシュートが大きくな
り、第２のサーミスタ８の検知温度ＴＨ２は下がってい
く。その結果温度差Ｔｓは大きくなる。Generally, when the clothes in the rotary drum 1 have dried, that is, when the drying operation is about to end, the rotary drum 1
Since the heat capacity in the inside becomes small and the dry air becomes easy to warm up and cool down easily, the detected temperature TH of the first thermistor 7
In No. 1, the overshoot from the controlled temperature Tx increases, and the detection temperature TH2 of the second thermistor 8 decreases. As a result, the temperature difference Ts becomes large.

【００２７】つぎに、残り乾燥時間を補正するときの動
作を図５から図７を参照しながら説明する。図５は、使
用される環境が違う場合の室温Ｔａと第２のサーミスタ
８の検知温度ＴＨ２の最高値Ｔ2maxの関係を示したもの
である。Ｘは広い部屋の中で、Ｙは密閉された小さな部
屋の中で使用された場合であり、室温Ｔａが高くなるこ
とによりＴ2maxは、広い部屋Ｘの場合は、徐々に高くな
っていくが、小さな部屋Ｙの場合は、それ以上の変化率
で高くなり、温度Ｔｍで飽和する。これはＴＨ１の温調
温度がＴｘ一定であるからである。Next, the operation for correcting the remaining drying time will be described with reference to FIGS. FIG. 5 shows the relationship between the room temperature Ta and the maximum value T2max of the detected temperature TH2 of the second thermistor 8 when the environment used is different. X is used in a large room, Y is used in a sealed small room, and T2max is gradually increased in the case of the large room X because the room temperature Ta is increased. In the case of a small room Y, the rate of change becomes higher at a higher rate, and the room temperature is saturated at Tm. This is because the controlled temperature of TH1 is Tx constant.

【００２８】また、温度Ｔｎは、広い部屋Ｘの中で使用
された場合で、かなり室温Ｔａが高いとき（たとえば、
３５℃）のＴ2maxの温度である。これより、Ｔ2maxがＴ
ｎ以上で、高くなればなるほど使用されている条件が悪
くなるため、温度Ｔｎ以上で密閉された小さな部屋で使
用されていても未乾燥がないように残り乾燥時間を補正
し、補正時間ｔｈをＴ2maxと室温Ｔａとで設定する。Further, when the temperature Tn is used in a large room X and the room temperature Ta is considerably high (for example,
35 ° C) T2max temperature. From this, T2max is T
When the temperature is higher than n, the higher the temperature is, the worse the condition of use is. Therefore, even if the temperature is higher than Tn, the remaining drying time is corrected so that there is no undrying even if it is used in a closed small room. It is set by T2max and room temperature Ta.

【００２９】一方、図６は、使用される環境が違う場合
の室温Ｔａと温調が働くまでの時間ｔonの関係を示した
ものである。図５と同様に、Ｘは広い部屋の中で、Ｙは
密閉された小さな部屋の中で使用された場合である。こ
こで、温調が働くまでの時間ｔonは、室温Ｔａや使用さ
れる環境以外にも、乾燥する衣類の量や質、初期の湿り
度合いにも大きく依存するので、ここでは、洗濯機で洗
った直後の標準容量の衣類、たとえば、綿と化繊の混じ
った衣類３ｋｇで絞り率が７０％としている。On the other hand, FIG. 6 shows the relationship between the room temperature Ta and the time ton until the temperature control works when the environment used is different. Similar to FIG. 5, X is used in a large room and Y is used in a closed small room. Here, the time ton until the temperature control works largely depends not only on the room temperature Ta and the environment in which it is used, but also on the quantity and quality of the clothes to be dried and the initial degree of wetness. Immediately after the squeezing, the standard capacity of the garment, for example, 3 kg of the garment in which cotton and synthetic fiber are mixed, is set to 70%.

【００３０】一般的に、室温Ｔａが高くなればなるほど
温調が働くまでの時間ｔonは短くなるが、広い部屋Ｘの
場合は、室温Ｔa1（約３０℃）以下になると温調が働か
なくなり、小さな部屋Ｙの場合は、室温Ｔａを一定とし
ても、広い部屋Ｘの場合より早く温調が働き、室温Ｔａ
が高くなればなるほど、温調が働くまでの時間ｔonは極
端に短くなる。したがって、小さな部屋Ｙの場合ほど残
り乾燥時間の補正が必要になる。In general, the higher the room temperature Ta, the shorter the time ton until the temperature control works, but in the case of the large room X, the temperature control does not work when the room temperature Ta1 (about 30 ° C.) or lower, In the case of the small room Y, even if the room temperature Ta is constant, the temperature control works faster than in the case of the large room X, and the room temperature Ta
The higher is, the extremely short the time ton until the temperature control works. Therefore, the smaller the room Y, the more the correction of the remaining drying time is required.

【００３１】つぎに、図７は、室温が高い場合と低い場
合のそれぞれのＴ2maxと補正時間ｔｈとの関係を示すも
ので、Ｖは室温が高い場合で、Ｗが室温が低い場合であ
る。室温が高いＷの場合は、Ｔ2maxの上昇とともになめ
らかに補正時間ｔｈを長くし、室温が高いＶの場合は、
Ｔ2maxの上昇とともに極端に長くする。Next, FIG. 7 shows the relationship between the T2max and the correction time th when the room temperature is high and when the room temperature is low, where V is the high room temperature and W is the low room temperature. When the room temperature is high W, the correction time th is smoothly lengthened as T2max rises, and when the room temperature is high V,
Extremely long as T2max rises.

【００３２】なお、回転ドラム１内が冷えた状態で運転
が開始された場合には、第１のサーミスタ７（ＴＨ
１）、第２のサーミスタ８（ＴＨ２）の温度は、図８に
示すようになり、運転開始時の第２のサーミスタ８で検
知した温度を室温Ｔａとすることができる。When the operation is started while the inside of the rotary drum 1 is cold, the first thermistor 7 (TH
1), the temperature of the second thermistor 8 (TH2) is as shown in FIG. 8, and the temperature detected by the second thermistor 8 at the start of operation can be the room temperature Ta.

【００３３】以上のように本実施例によれば、温調が働
く時間ｔonにて、温調が働くまでの時間と、第１のサー
ミスタ７と第２のサーミスタ８の温度差Ｔｓに基づいて
遅延時間ｔｄを設定し、第２のサーミスタ８の最高値Ｔ
2maxと室温Ｔａに基づいて、残り乾燥時間を補正するこ
とにより、密閉された小さな部屋で使用されていても未
乾燥がないように乾燥することができる。As described above, according to this embodiment, based on the time until the temperature control works at the time ton at which the temperature control works and the temperature difference Ts between the first thermistor 7 and the second thermistor 8. The delay time td is set, and the maximum value T of the second thermistor 8 is set.
By correcting the remaining drying time on the basis of 2max and the room temperature Ta, it is possible to perform drying so that there is no undried even when used in a closed small room.

【００３４】なお、上記実施例では、室温検知のタイミ
ングを運転開始後２０秒としたが、これは運転開始直後
としてもよいし、またＰＴＣヒータで加熱される直前の
吸気温度を検知するためのサーミスタで室温を検知する
ようにしたが、これは室温検知用のサーミスタを本体内
に別に設けてもよい。In the above-described embodiment, the room temperature detection timing is set to 20 seconds after the start of operation, but it may be set immediately after the start of operation, or for detecting the intake air temperature immediately before being heated by the PTC heater. Although the room temperature is detected by the thermistor, a thermistor for detecting the room temperature may be separately provided in the main body.

【００３５】さらに、吸気温度の最高値を検知する期間
として、運転開始から温調が働くまでの期間としたが、
これは温調が働いてからも一定時間は最高値を検知し続
けるようにしてもよい。Furthermore, the period from the start of operation until the temperature control works is taken as the period for detecting the maximum value of the intake air temperature.
In this case, the maximum value may be continuously detected for a certain period of time even after the temperature control works.

【００３６】つぎに、本発明の第２の実施例について説
明する。図１における周囲温度検知手段１０は、運転初
期の送風運転中に、第１のサーミスタ７で検知した排気
温度の変化率と第２のサーミスタ８で検知した吸気温度
の変化率と排気温度あるいは吸気温度とから周囲温度を
演算するようにしている。また、運転制御手段１５は、
上記第１の実施例と同様に、第１のサーミスタ７の出力
と温度差検知手段１１の出力とを入力し、運転初期に送
風運転を行い、残り乾燥時間設定手段１２や残り乾燥時
間補正手段１４などの情報に基づいて、２つに分割され
たＰＴＣヒータ３の一方がヒータ３ａ、他方がヒータ３
ｂとし、それぞれに直列に接続されたリレー１７ａおよ
びリレー１７ｂと、モータ４を駆動するためのモータ駆
動素子１６を制御しながら乾燥運転を制御するととも
に、所定時間以内か、または第１のサーミスタ７で検知
される温度が所定温度以下で、かつ温度差検知手段１１
で検知される温度差が所定温度以下になったときに、運
転初期に行う送風運転を停止して乾燥運転に切り換える
ようにしている。他の構成は上記第１の実施例と同じで
ある。Next, a second embodiment of the present invention will be described. The ambient temperature detecting means 10 in FIG. 1 is configured to change the rate of change in exhaust gas temperature detected by the first thermistor 7 and the rate of change in intake air temperature detected by the second thermistor 8 and the exhaust gas temperature or intake air during the air blowing operation in the initial stage of operation. The ambient temperature is calculated from the temperature. In addition, the operation control means 15
Similar to the first embodiment, the output of the first thermistor 7 and the output of the temperature difference detection means 11 are input, and the blowing operation is performed at the initial stage of the operation to set the remaining drying time setting means 12 and the remaining drying time correcting means. Based on the information such as 14, the PTC heater 3 divided into two has one heater 3a and the other heater 3
b, the drying operation is controlled while controlling the relay 17a and the relay 17b, which are respectively connected in series, and the motor drive element 16 for driving the motor 4, and the drying operation is performed within a predetermined time or the first thermistor 7 The temperature detected by is less than or equal to a predetermined temperature, and the temperature difference detecting means 11
When the temperature difference detected in step 2 becomes less than or equal to a predetermined temperature, the blowing operation performed at the beginning of the operation is stopped and switched to the drying operation. The other structure is the same as that of the first embodiment.

【００３７】上記構成において図９を参照しながら動作
を説明する。なお、図９は、図３の動作フローチャート
において、乾燥運転中に行う室温検知サブルーチン例を
示している。まず、ステップ６１で、第１のサーミスタ
７（ＴＨ１）と第２のサーミスタ８（ＴＨ２）で検知し
た温度をそれぞれＴＨ1i、ＴＨ2iとし、ステップ６２か
らステップ６３までで、温度差が１．５Ｋ以下でなおか
つＴＨ1iが３５℃以下かどうかを判定し、この条件を満
足していればステップ６９へ進みＴＨ2iを室温Ｔａとし
てステップ７０で終了する。The operation of the above configuration will be described with reference to FIG. Note that FIG. 9 shows an example of a room temperature detection subroutine performed during the drying operation in the operation flowchart of FIG. First, in step 61, the temperatures detected by the first thermistor 7 (TH1) and the second thermistor 8 (TH2) are set to TH1i and TH2i, respectively. From step 62 to step 63, the temperature difference is 1.5K or less. Further, it is determined whether TH1i is 35 ° C. or lower, and if this condition is satisfied, the routine proceeds to step 69, where TH2i is set to the room temperature Ta, and the routine ends at step 70.

【００３８】前記条件を満足していなければ、ステップ
６４からステップ６６までで、最長時間をｔ５（たとえ
ば、５分）とし、温度差が１．５Ｋ以下で、なおかつＴ
Ｈ1iが３５℃以下になるまで送風運転を行う。そして、
ステップ６７で、第１のサーミスタ７（ＴＨ１）と第２
のサーミスタ８（ＴＨ２）で検知した温度をそれぞれＴ
Ｈ1e、ＴＨ2eとし、ステップ６８でＴＨ1i、ＴＨ2i、Ｔ
Ｈ1e、ＴＨ2eより比例演算で室温Ｔａを求め、ステップ
７０で終了する。If the above conditions are not satisfied, the maximum time is set to t5 (for example, 5 minutes) from step 64 to step 66, the temperature difference is 1.5 K or less, and T
Blower operation is performed until H1i falls below 35 ° C. And
In step 67, the first thermistor 7 (TH1) and the second
Temperature detected by the thermistor 8 (TH2) of
H1e, TH2e, and in step 68 TH1i, TH2i, T
The room temperature Ta is obtained by the proportional calculation from H1e and TH2e, and the process ends at step 70.

【００３９】すなわち、回転ドラム１内が冷えた状態で
運転が開始されたときは、運転開始時のＴＨ２の温度を
室温Ｔａとし、温まった状態で運転が開始されたとき
は、最長５分間送風運転を行い、その期間のＴＨ１とＴ
Ｈ２の温度勾配より室温Ｔａを演算により求める。That is, when the operation is started with the inside of the rotary drum 1 being cold, the temperature of TH2 at the start of the operation is room temperature Ta, and when the operation is started with the temperature being warm, air is blown for a maximum of 5 minutes. Do the driving, TH1 and T of the period
The room temperature Ta is calculated from the temperature gradient of H2.

【００４０】以上の動作を図１０の動作タイミングチャ
ートにより説明すると、図１０は、回転ドラム１内が温
まった状態で運転が開始されてからの第１のサーミスタ
７（ＴＨ１）、第２のサーミスタ８（ＴＨ２）の温度の
経時変化を示したものであり、運転開始から時刻ｔ５ま
で送風運転を行い、時刻ｔ５より乾燥運転に入る。同図
において、ＴＨ1iとＴＨ1eを結んだ直線とＴＨ2iとＴＨ
2eを結んだ直線の交点の温度Ｔｃは比例計算により簡単
に求まり、室温ＴａはＴｃからさらにΔＴｃだけ引いた
値とする。ΔＴｃは実験で求まる機体固有の補正値であ
る。The above operation will be described with reference to the operation timing chart of FIG. 10. In FIG. 10, the first thermistor 7 (TH1) and the second thermistor after the operation is started with the inside of the rotary drum 1 warmed up are shown. 8 shows a change with time in temperature of 8 (TH2), the air blowing operation is performed from the start of operation to time t5, and the drying operation is started from time t5. In the figure, a straight line connecting TH1i and TH1e and TH2i and TH
The temperature Tc at the intersection of the straight lines connecting 2e is easily obtained by proportional calculation, and the room temperature Ta is a value obtained by further subtracting ΔTc from Tc. ΔTc is a correction value peculiar to the aircraft, which is obtained by experiment.

【００４１】なお、図１１に示すように、回転ドラム１
内が温まった状態で運転が開始されてから時刻ｔ５を過
ぎて、さらにＴＨ１とＴＨ２が室温Ｔａに等しくなるま
で送風運転を行った場合には、室温Ｔａを正確に求める
ことはできるが、数十分必要となるので、運転開始から
乾燥運転終了までのトータル運転時間が長くなりすぎ、
実用上不可能である。As shown in FIG. 11, the rotary drum 1
After the time t5 has passed since the operation started with the inside warmed, and when the air blowing operation is further performed until TH1 and TH2 become equal to the room temperature Ta, the room temperature Ta can be accurately calculated. Since it is necessary enough, the total operating time from the start of operation to the end of drying operation becomes too long,
It is practically impossible.

【００４２】[0042]

【発明の効果】以上のように本発明は、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送る送風手
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、前記加熱手段の吸気温度を検知する吸気温度
検知手段と、前記吸気温度検知手段の任意の期間の最高
値を検知する最高値検知手段と、周囲温度を検知する周
囲温度検知手段と、前記最高値検知手段の出力と前記周
囲温度検知手段の出力により残り乾燥運転時間を補正す
る残り乾燥時間補正手段とを備えたから、密閉された小
さな部屋で使用され運転開始後、はやいタイミングで温
調が働き、そして加熱手段のオフする回数が増えたとし
ても、未乾燥となることなく、衣類の量や湿り度合に応
じて最適な乾燥時間で終了することができる。As described above, according to the present invention, a rotating drum for drying clothes, a blowing means for sending warm air into the rotating drum, a heating means provided in a blowing path into the rotating drum, and A motor for rotating the blower means or the rotary drum, an intake air temperature detection means for detecting the intake air temperature of the heating means, a maximum value detection means for detecting the maximum value of the intake air temperature detection means in an arbitrary period, and a surrounding area. Since it is provided with an ambient temperature detecting means for detecting the temperature, and a remaining drying time correcting means for correcting the remaining drying operation time by the output of the maximum value detecting means and the output of the ambient temperature detecting means, it is used in a small enclosed room. After the start of operation, temperature control works at an early timing, and even if the number of times the heating means is turned off increases, it does not become undried, and the optimum drying time according to the amount of clothes and the degree of wetness In can be terminated.

【００４３】また、周囲温度検知手段は、運転初期の吸
気温度検知手段で検知した温度を周囲温度としたから、
簡単でかつ正確に周囲温度を検知することができる。Further, since the ambient temperature detecting means uses the temperature detected by the intake temperature detecting means at the initial stage of operation as the ambient temperature,
The ambient temperature can be detected easily and accurately.

【００４４】また、回転ドラム内温度を検知する排気温
度検知手段と、前記排気温度検知手段と吸気温度検知手
段のそれぞれで検知した温度の差を検知する温度差検知
手段と、前記排気温度検知手段の出力と前記温度差検知
手段の出力とを入力し運転初期に送風運転を行う運転制
御手段を備え、周囲温度検知手段は、運転初期の送風運
転中に、前記排気温度検知手段で検知した排気温度の変
化率と吸気温度検知手段で検知した吸気温度の変化率と
排気温度あるいは吸気温度とから周囲温度を演算するよ
うにしたから、連続使用されることにより回転ドラム内
が温まった状態で運転が開始されたとしても、正確な周
囲温度を求めることができる。Exhaust temperature detecting means for detecting the temperature inside the rotating drum, temperature difference detecting means for detecting a difference in temperature detected by the exhaust temperature detecting means and intake air temperature detecting means, and the exhaust temperature detecting means. Of the exhaust gas detected by the exhaust gas temperature detecting means during the air blowing operation at the initial stage of operation. Since the ambient temperature is calculated from the rate of change of temperature and the rate of change of intake air temperature detected by the intake air temperature detecting means and the exhaust gas temperature or the intake air temperature, it is operated continuously while the inside of the rotating drum is warm. Even if is started, an accurate ambient temperature can be obtained.

【００４５】また、運転制御手段は、所定時間以内か、
または排気温度検知手段で検知される温度が所定温度以
下でかつ温度差検知手段で検知される温度差が所定温度
以下になったときに、運転初期に行う送風運転を停止し
て乾燥運転に切り換えるようにしたから、周囲温度を検
知するための送風運転は最長でも５分であり、運転開始
から乾燥運転終了までのトータル運転時間が長くなりす
ぎることがなくなる。Further, the operation control means is within a predetermined time,
Alternatively, when the temperature detected by the exhaust gas temperature detecting means is equal to or lower than a predetermined temperature and the temperature difference detected by the temperature difference detecting means is equal to or lower than the predetermined temperature, the blowing operation performed in the initial operation is stopped and switched to the drying operation. Therefore, the blowing operation for detecting the ambient temperature is 5 minutes at the longest, and the total operation time from the start of the operation to the end of the drying operation does not become too long.

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

【図１】本発明の第１の実施例の衣類乾燥機のブロック
回路図FIG. 1 is a block circuit diagram of a clothes dryer according to a first 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】同衣類乾燥機の乾燥運転制御フローチャートFIG. 3 is a flowchart of a drying operation control of the clothes dryer.

【図４】同衣類乾燥機の各部温度の経時変化を示す特性
図FIG. 4 is a characteristic diagram showing changes with time in temperature of each part of the clothes dryer.

【図５】同衣類乾燥機の室温と吸気温度の最高値との関
係特性図FIG. 5 is a characteristic diagram showing the relationship between the room temperature and the maximum intake air temperature of the clothes dryer.

【図６】同衣類乾燥機の室温と温度調節時間との関係特
性図FIG. 6 is a characteristic diagram of the relationship between room temperature and temperature adjustment time of the clothes dryer.

【図７】同衣類乾燥機の吸気温度の最高値と補正時間と
の関係特性図FIG. 7 is a characteristic diagram showing the relationship between the maximum value of the intake air temperature of the clothes dryer and the correction time.

【図８】同衣類乾燥機の回転ドラムが冷えた状態で運転
開始したときの各部温度の経時変化を示す特性図FIG. 8 is a characteristic diagram showing changes with time in temperature of each part when the rotating drum of the clothes dryer starts operating in a cold state.

【図９】本発明の第２の実施例の衣類乾燥機の室温検知
フローチャートFIG. 9 is a room temperature detection flowchart of the clothes dryer according to the second embodiment of the present invention.

【図１０】同衣類乾燥機の各部温度の経時変化を示す特
性図FIG. 10 is a characteristic diagram showing changes with time in temperature of each part of the clothes dryer.

【図１１】同衣類乾燥機の動作を説明するための特性図FIG. 11 is a characteristic diagram for explaining the operation of the clothes dryer.

【図１２】従来の衣類乾燥機の各部温度の経時変化を示
す特性図FIG. 12 is a characteristic diagram showing changes with time in temperature of various parts of a conventional clothes dryer.

【図１３】同衣類乾燥機の温度調節動作を示す特性図FIG. 13 is a characteristic diagram showing a temperature adjusting operation of the clothes dryer.

【符号の説明】[Explanation of symbols]

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 ８ 第２のサーミスタ（吸気温度検知手段） ９ 最高値検知手段 １０ 周囲温度検知手段 １４ 残り乾燥時間補正手段 DESCRIPTION OF SYMBOLS 1 rotating drum 2 heat exchange type double-blade fan (blowing means) 3 PTC heater (heating means) 5 motor 8 second thermistor (intake air temperature detection means) 9 maximum value detection means 10 ambient temperature detection means 14 remaining dry time correction means

───────────────────────────────────────────────────── フロントページの続き (72)発明者 木内 光幸 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuyuki Kiuchi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 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送る送風手段と、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、前記加熱手段
の吸気温度を検知する吸気温度検知手段と、前記吸気温
度検知手段の任意の期間の最高値を検知する最高値検知
手段と、周囲温度を検知する周囲温度検知手段と、前記
最高値検知手段の出力と前記周囲温度検知手段の出力に
より残り乾燥運転時間を補正する残り乾燥時間補正手段
とを備えた衣類乾燥機。1. A rotating drum for drying clothes, a blowing unit for feeding warm air into the rotating drum, a heating unit provided in a blowing path into the rotating drum, and the rotating unit or the rotating drum. A motor for driving, an intake air temperature detecting means for detecting an intake air temperature of the heating means, a maximum value detecting means for detecting a maximum value of the intake air temperature detecting means in an arbitrary period, and an ambient temperature detecting means for detecting an ambient temperature. And a remaining drying time correcting means for correcting the remaining drying operation time by the output of the maximum value detecting means and the output of the ambient temperature detecting means. 【請求項２】 周囲温度検知手段は、運転初期の吸気温
度検知手段で検知した温度を周囲温度とする請求項１記
載の衣類乾燥機。2. The clothes dryer according to claim 1, wherein the ambient temperature detecting means sets the temperature detected by the intake temperature detecting means at the initial stage of operation as the ambient temperature. 【請求項３】 回転ドラム内温度を検知する排気温度検
知手段と、前記排気温度検知手段と吸気温度検知手段の
それぞれで検知した温度の差を検知する温度差検知手段
と、前記排気温度検知手段の出力と前記温度差検知手段
の出力とを入力し運転初期に送風運転を行う運転制御手
段を備え、周囲温度検知手段は、運転初期の送風運転中
に、前記排気温度検知手段で検知した排気温度の変化率
と吸気温度検知手段で検知した吸気温度の変化率と排気
温度あるいは吸気温度とから周囲温度を演算するように
した請求項１記載の衣類乾燥機。3. Exhaust temperature detecting means for detecting a temperature inside a rotating drum, temperature difference detecting means for detecting a difference between temperatures detected by the exhaust temperature detecting means and the intake air temperature detecting means, and the exhaust temperature detecting means. Of the exhaust gas detected by the exhaust gas temperature detecting means during the air blowing operation at the initial stage of operation. The clothes dryer according to claim 1, wherein the ambient temperature is calculated from the rate of change in temperature, the rate of change in intake air temperature detected by the intake air temperature detecting means, and the exhaust gas temperature or the intake air temperature. 【請求項４】 運転制御手段は、所定時間以内か、また
は排気温度検知手段で検知される温度が所定温度以下で
かつ温度差検知手段で検知される温度差が所定温度以下
になったときに、運転初期に行う送風運転を停止して乾
燥運転に切り換えるようにした請求項３記載の衣類乾燥
機。4. The operation control means is within a predetermined time, or when the temperature detected by the exhaust temperature detection means is below a predetermined temperature and the temperature difference detected by the temperature difference detection means is below a predetermined temperature. The clothes dryer according to claim 3, wherein the air blowing operation performed at the initial stage of operation is switched to the drying operation.