JP2004350982A - Dryer for clothing - Google Patents

Dryer for clothing Download PDF

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Publication number
JP2004350982A
JP2004350982A JP2003153174A JP2003153174A JP2004350982A JP 2004350982 A JP2004350982 A JP 2004350982A JP 2003153174 A JP2003153174 A JP 2003153174A JP 2003153174 A JP2003153174 A JP 2003153174A JP 2004350982 A JP2004350982 A JP 2004350982A
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Japan
Prior art keywords
air
drying
drum
clothes dryer
heater
Prior art date
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JP2003153174A
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Japanese (ja)
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JP4638660B2 (en
Inventor
Masayo Kawahara
雅代 川原
Tsunetoshi Komatsu
常利 小松
Katsuhisa Aida
勝寿 會田
Isao Hiyama
功 桧山
Akinori Kaneko
哲憲 金子
Takashi Tomita
隆士 富田
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Hitachi Appliances Inc
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Hitachi Home and Life Solutions Inc
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Priority to JP2003153174A priority Critical patent/JP4638660B2/en
Publication of JP2004350982A publication Critical patent/JP2004350982A/en
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Publication of JP4638660B2 publication Critical patent/JP4638660B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a clothing dryer for shortening a required time by performing drying only by blowing without a heater input, and also reducing the shrinkage of and damage to clothing. <P>SOLUTION: The number of rotation of a motor is set to be higher than that in the case of normal warm blow drying only in a blow drying mode. Thus, the amount of blowing is increased, so as to shorten a drying time. The shrinkage of and damage to of the clothing by a mechanical force peculiar to a drum are suppressed by time shortening. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、循環する乾燥用空気の除湿を熱交換ファンでするコンデンスタイプの衣類乾燥機に関する。
【0002】
【従来の技術】
コンデンスタイプの衣類乾燥機は、加熱した高温の乾燥用空気で乾燥するため衣類の種類によって傷みがでるものがある。
【0003】
また従来の衣類乾燥機では、モータ回転数を最大1300回転に設定している。モータ回転数は電源周波数(f)とポール数(P)によって制限される。回転数(RPM)を求める式は「120×f÷P」であり、ポール数は「4」であることから、50Hzの場合は120×50(Hz)÷4=1500回転、60Hzの場合は120×60(Hz)÷4=1800回転が最大回転数となる。それぞれの電源周波数における全波運転は図7に示す通りであり、50Hzおよび60Hzいずれの地域にも対応可とするため、最大回転数の低い50Hzの方を優先的に考慮し、モータ回転数を設定した。このとき50Hzの場合は最大が1500回転であることから、1300回転よりも更に高い回転数設定も可能ではあるが、下記理由により1300回転にすることとしている。
【0004】
図8に示すように、定格容量(5.0kg)の湿布時が最もトルクを要し、そのときの湿布重量が約8.8kgであり、必要とされるトルクは7kg−cmであることから、最大回転数は50Hzで1300回転、60Hzで1570回転くらいが限度である。その後被乾燥物の重量は乾燥によって徐々に減少していき、よって回転数は上がる傾向にあるが、このとき1300回転に制御していることにより、回転数は抑えられ、よって入力が大幅に下がる。
【0005】
一方、例えば最大回転数を1400回転で制御した場合、上述の通り、湿布(約8.8kg)のときは図8に示すように最高1300回転(※50Hzの場合)までしか上がらず、乾燥が進むとともに図9のように回転数が最大の1400回転へと上昇していくため、被乾燥物の重量が減少するのに比べ入力はさほど下がらない。つまり乾燥初期から最後まで全体的に効率の悪いものとなる。
【0006】
また、モータ回転数を上げれば上げるほど温度上昇が問題になり、その対応のためにモータ小型化が困難になる。
【0007】
よって、「乾燥効率アップ」および「モータ小型化」のためには可能な範囲でモータ回転数を抑えることが望ましく、1300回転を最大回転数と設定している。
【0008】
【発明が解決しようとする課題】
上記の問題に対処し、本発明は熱に弱い衣類を傷めずに乾燥できる衣類乾燥機を提供することを目的とする。
【0009】
また、ヒータを使わず風のみで乾燥を行う場合、温風乾燥よりは乾燥所要時間が延びるのは明らかであり、使い勝手の上から可能な範囲での時間短縮を図ることが望まれる。
【0010】
また、所要時間が延びれば延びるほど、衣類にかかる機械力が増大することで、たとえ風のみの乾燥であっても衣類の収縮度が高くなり、また傷みも増す。(ドラム式特有の傾向)
上記に鑑み、本発明の次の目的は乾燥に費やす所要時間の短縮および衣類収縮度の低減を実現するものである。
【0011】
【課題を解決するための手段】
本発明は、冷却用空気と乾燥用空気との熱交換を行うとともに乾燥用空気と冷却用空気のファンをも兼ねる熱交換ファンと、この熱交換ファンとドラムを回転駆動する電動機と、ドラムに流入する乾燥用空気を加熱するヒータと、ヒータの上流側にあたる循環風路の部位を機体外に通じさせたり、閉ざしたりする蓋開閉手段とを有し、開閉手段を開いた状態で外気の給気/乾燥用空気の排気を同時にしながらヒータの通電がともなわない冷風による風乾燥運転を設けたことを特徴とする。
【0012】
また、本発明は、上記の風乾燥運転では、ヒータの通電がともなう加熱乾燥運転に比べて電動機の回転数を高くしたり、あるいは風乾燥運転では、ヒータの通電がともなう加熱乾燥運転に比べて熱交換ファンの回転数を高くしたりすることを特徴とする。
【0013】
【発明の実施の形態】
以下、本発明を図示の一実施例に基づいて説明する。
【0014】
図1は衣類乾燥機の全体構成図である。乾燥室を構成する回転自在なるドラム2は、機体の外枠1内に回転自在に配置され、ドラム2の前面には乾燥用の温風を得るためのヒータ3が配置される。ドラム2は電動機(モータ)5の回転力をドラム駆動ベルト4で伝えることにより回転する。
【0015】
ドラムの後部には乾燥用空気7を排出するドラム空気出口6(排気側)が設けられており、その後方には、前記乾燥用空気および、この乾燥用空気を冷却するための冷却用空気8(機体外から吸い込まれる)を発生させるための送風装置の役割を果たし、かつ乾燥用空気7を冷却する熱交換機能を兼ねた熱交換ファン9を収納するファンケーシング10が配置されている。
【0016】
そして、このファンケーシング10は熱交換ファンの外周部につけた同心円形状のリブで構成されるラビリンスシール部11aとファンケース蓋12のラビリンスシール部11bとで乾燥用空気側と冷却用空気側とに仕切られている。
【0017】
ファンケーシング10の乾燥空気用出口はMダクト13とFダクト14とでヒータ3に連通されている。Mダクト13とFダクト14は循環風路を構成するものである。ドラム内を環流して排気側から排出されて来た乾燥用空気は送風装置によって循環風路に送られる。循環風路内を環流した乾燥用空気はドラム2の前側に設けられている吸気側からドラム2内に流入する。循環風路に設けられ、かつ乾燥用空気を加熱するヒータ3はドラム2の吸気側に隣接するように置かれる。
【0018】
15は熱交換ファン駆動用ベルト、16は熱交換用ファン用プーリー、17は熱交換ファン支持部材、18は外枠1の前方に設けられた被乾燥物出し入れ用の開口を開閉するドア、19はフィルターで、20はドラム前部固定壁、その外周でドラム2を回転自在に固定する。
【0019】
熱交換ファン9は熱交換部21と、乾燥用空気と冷却空気とを仕切るラビリンスシール部11aで構成される。熱交換部21は断面形状が波形状のブレードで構成され、そのブレード面を介して乾燥用空気と冷却用空気との熱交換を行う。この熱交換により、乾燥用空気中の水蒸気が凝縮されて除湿される。
【0020】
Fダクト14には開閉蓋23とカムモータ25を配置する。開閉蓋23とカムモータ25で蓋開閉手段が構成される。この蓋開閉手段は、ヒータ3の上流側に位置するようにして循環風路に設けられる。
【0021】
開閉蓋23が開いている場合は、Mダクト13から流れてくる高湿度の乾燥用空気7はFダクト穴26から機体外に放出され、そのFダクト穴26から低湿度の機体外の空気22(外気)を吸い込む。つまり、蓋開閉手段が開かれているときには、乾燥用空気の排気と外気の給気を同時に循環風路にもたらす。この排気と給気による換気量は循環風路を環流する循環量の半分以下程度である。
【0022】
衣類乾燥機のコントローラ27の内部回路は図2に示す通りであり、駆動回路、パネルボタンや乾燥度検出手段の外部信号を取り込むマイクロコンピュータ、商用の電源から電力の供給を受ける電源回路等により構成され、誘導電動機の電動機(モータ)5、ヒータ3、カムモータ25等を駆動制御するものである。
【0023】
衣類の乾燥コースについては、例えば図3に示すパネル28のCで表す枠内にあるように、通常の衣類を乾燥させる「標準」コース、生乾きの衣類を乾燥するのに適している「仕上げ」コース、アイロンがけをするのにちょうどよい湿り気をもたせて終了とする「アイロン」コース、また「おこのみ」ボタンで選ぶ「除菌」、「セーター」、「毛布」、「干す前」、「ズック」コース等被乾燥物の種類に適した乾燥コースがある。
【0024】
風乾燥運転(風乾燥コース)の運転方法は、図3のパネル28上の28C枠内にある「風乾燥」ボタンKを押すことにより、図4に示すボタン左肩にあるLED部(表示28L)が点灯する。「風乾燥」コース時間は60分と120分の2種類であり、点灯時が60分コース、点滅時が120分コースとなる。「風乾燥」ボタンKを押すと、点灯→点滅→点灯→…と変わるので、いずれかを選び、スタートボタン28Sを押し、運転開始する。
【0025】
なお、風乾燥コースの運転は、図5に示す風乾燥コース(60分)のフローチャートに沿って実行される。また標準(温風)乾燥コース(加熱乾燥運転)の運転は、図6に示す標準(温風)乾燥コースのフローチャートに沿って実行される。
【0026】
上述した操作により、風乾燥コースが選択されたときには、ヒータ3には通電せず、開閉蓋23を開け、電動機(モータ)5を回転させることにより、被乾燥物24には低湿度の機体外の空気22があたり、被乾燥物中の水分を吸収して高湿度になった空気をFダクト穴26に環流させて排出することで被乾燥物の乾燥を行う。被乾燥物は、ヒータの通電がともなわない冷風による風乾燥運転で乾燥させられるので生地の傷みが生じ難く、熱に弱い繊維の衣類乾燥に好適である。
【0027】
かかる運転において、モータ回転数は1400回転とする。この回転数は50Hzの商用電源を全波形で通電させる場合の目安である。
【0028】
こうしてモータ回転数を上げることにより、ドラム2および熱交換ファン9の回転速度が上がり、よって開閉蓋23から取り込む機体外の空気22の量を増やすことで時間短縮を図ることが可能となる。
【0029】
ここではモータ回転数を1400回転と制御した例を示したが、回転制御をしない全波運転(商用電源を全波形通電)とした場合、60Hzにおいては1570回転となり運転音がやや高くなるという不具合はあるものの更に乾燥時間が縮まることから、全波運転を行った場合においても時間短縮の効果は得られる。
【0030】
また、モータ回転数の制御の有無にかかわらず、モータ回転数を現状よりも高くすることで時間短縮を図ったことにより、被乾燥物にかかる機械力を低減することが可能となったことと、風のみの乾燥という被乾燥物に熱を加えない乾燥方法という両者の相乗効果によって、被乾燥物の縮み・傷みを大幅に低減することができる。
【0031】
乾燥行程中のごく一部であってもヒータを入れた場合は、水分蒸発が進み乾燥の時間短縮には効果的ではあるが、「衣類収縮防止」に悪影響を及ぼすことから、ヒータには一切頼ることなく時間短縮を図る必要がある。図10に示す通り、風量を上げることで乾燥時間の短縮を図ることが可能であり、また、図11に示すようにモータ回転数を上げれば風量がアップすることから、風乾燥コース時に限って、モータ回転数を1400回転にすることにした。
【0032】
ここで、「風乾燥コース時に限って1400回転」としたのは、風乾燥時の容量は通常定格の1/5である1kg以下で、生地の素材は化繊を対象とする被乾燥物の乾燥運転であるからである。すなわち、その程度の容量では、図12に示す通り、被乾燥物の乾燥が進行しない湿布時であっても最大トルクは2kg−cmであることから、いずれの電源周波数(50Hz/60Hz)においても1400回転以上で運転できるので、最初からアップした風量の送風が行われ、冷風による風乾燥の運転時間短縮が実現できるのである。
【0033】
【発明の効果】
本発明によれば、冷風による風乾燥の運転により、衣類の収縮および傷みを抑えることができ、また風乾燥する場合に限り、モータの回転数を上げ、風量をアップさせることにより、乾燥時間の短縮を図ることができる。
【図面の簡単な説明】
【図1】本発明の一実施例にかかわる衣類乾燥機の縦断面図。
【図2】本発明の一実施例にかかわるもので、制御部のブロック回路図。
【図3】本発明の一実施例にかかわるもので、運転操作部を示す図。
【図4】図3の一部を拡大図。
【図5】本発明の一実施例にかかわるもので、風乾燥コースのフローチャートを示す。
【図6】本発明の一実施例にかかわるもので、標準(温風)乾燥コースのフローチャートを示す図。
【図7】従来例にかかわるもので、電源周波数50Hzおよび60Hzにおけるモータ回転数とトルクの関係を示す図。
【図8】従来例にかかわるもので、定格5.0kg湿布を入れた場合の電源周波数50Hzおよび60Hzにおける最大モータ回転数について示した図。
【図9】従来例にかかわるもので、モータ最大回転数を1400回転と設定した場合の5.0kg湿布を乾燥した際の50Hzにおける回転数の推移について示した図。
【図10】本発明の一実施例にかかわるもので、乾燥時の風量と乾燥時間の関係を示す図。
【図11】本発明の一実施例にかかわるもので、モータ回転数と風量の関係を示す図。
【図12】本発明の一実施例にかかわるもので、風乾燥コースにおいて1.0kg湿布を乾燥した際の電源周波数50Hzおよび60Hzにおける最大モータ回転数について示した図。
【符号の説明】
1…外枠、2…ドラム、3…ヒータ、4…ドラム駆動ベルト、5…電動機(モータ)、6…ドラム空気出口、7…冷却空気、8…乾燥空気、9…熱交換ファン、10…ファンケーシング、11a…熱交換ファン側ラビリンスシール部、11b…ファンケーシング側ラビリンスシール部、12…ファンケーシング蓋、13…Mダクト、14…Fダクト、15…熱交換ファン駆動用ベルト、16…熱交換用ファン用プーリー、17…熱交換ファン支持部材、18…ドア、19…フィルター、20…ドラム前部固定壁、21…熱交換部、22…機体外の空気、23…開閉蓋、24…被乾燥物、25…蓋開閉手段、26…Fダクト穴、27…コントローラ、28…パネル。
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a condensation type clothes dryer that uses a heat exchange fan to dehumidify circulating drying air.
[0002]
[Prior art]
A condensed type clothes dryer dries with heated high-temperature drying air, so that some types of clothes cause damage.
[0003]
In the conventional clothes dryer, the motor rotation speed is set to a maximum of 1300 rotations. The motor rotation speed is limited by the power supply frequency (f) and the number of poles (P). The formula for calculating the rotation speed (RPM) is “120 × f ÷ P”, and the number of poles is “4”. Therefore, 120 × 50 (Hz) ÷ 4 = 1500 rotations for 50 Hz, and 120 × 60 (Hz) ÷ 4 = 1800 revolutions is the maximum revolution speed. The full-wave operation at each power supply frequency is as shown in FIG. 7, and in order to be able to cope with both the 50 Hz and 60 Hz regions, the 50 Hz having the lower maximum rotational speed is preferentially considered and the motor rotational speed is reduced. Set. At this time, in the case of 50 Hz, since the maximum is 1500 rotations, it is possible to set a higher rotation speed than 1300 rotations. However, the rotation speed is set to 1300 rotations for the following reason.
[0004]
As shown in FIG. 8, the torque is required most when the rated capacity (5.0 kg) is applied to the compress, the compress weight is about 8.8 kg at that time, and the required torque is 7 kg-cm. The maximum number of rotations is limited to 1300 at 50 Hz and 1570 at 60 Hz. Thereafter, the weight of the object to be dried gradually decreases due to drying, and the number of rotations tends to increase. At this time, by controlling to 1300 rotations, the number of rotations is suppressed, and the input is greatly reduced. .
[0005]
On the other hand, for example, when the maximum number of revolutions is controlled at 1400 revolutions, as described above, when using a compress (about 8.8 kg), only up to 1300 revolutions (in the case of 50 Hz) as shown in FIG. As the rotation proceeds, as shown in FIG. 9, the rotation speed increases to the maximum of 1400 rotations, so that the input does not decrease so much as the weight of the object to be dried decreases. In other words, the overall efficiency is low from the beginning to the end of drying.
[0006]
In addition, as the motor rotation speed increases, the temperature rise becomes more problematic, and it is difficult to reduce the size of the motor to cope with the problem.
[0007]
Therefore, it is desirable to reduce the number of rotations of the motor as much as possible in order to increase the drying efficiency and downsize the motor, and 1300 rotations is set as the maximum number of rotations.
[0008]
[Problems to be solved by the invention]
In view of the above problems, an object of the present invention is to provide a clothes dryer capable of drying heat-sensitive clothes without damaging the clothes.
[0009]
Further, when drying is performed only by air without using a heater, it is obvious that the required drying time is longer than that of hot air drying, and it is desired to reduce the time as much as possible from the viewpoint of convenience.
[0010]
In addition, the longer the required time, the greater the mechanical force applied to the garment, so that even if only the wind is dried, the degree of shrinkage of the garment is increased, and the damage is also increased. (Drum type specific tendency)
In view of the above, a second object of the present invention is to reduce the time required for drying and reduce the degree of shrinkage of clothes.
[0011]
[Means for Solving the Problems]
The present invention provides a heat exchange fan that exchanges heat between cooling air and drying air and also serves as a fan for drying air and cooling air, an electric motor that rotates the heat exchange fan and the drum, and a drum. It has a heater for heating the inflowing drying air, and a lid opening / closing means for opening or closing a portion of a circulating air passage upstream of the heater to the outside of the body, and supplying outside air with the opening / closing means opened. It is characterized in that a wind-drying operation is performed by using a cool air that does not energize the heater while simultaneously discharging the air / drying air.
[0012]
Further, in the present invention, in the above-described air drying operation, the number of rotations of the electric motor is increased as compared with the heating and drying operation with energization of the heater, or in the air drying operation, compared with the heating and drying operation with energization of the heater. The rotation speed of the heat exchange fan is increased.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described based on one embodiment shown in the drawings.
[0014]
FIG. 1 is an overall configuration diagram of the clothes dryer. A rotatable drum 2 constituting a drying chamber is rotatably disposed within an outer frame 1 of the machine body, and a heater 3 for obtaining warm air for drying is disposed on a front surface of the drum 2. The drum 2 is rotated by transmitting the torque of an electric motor (motor) 5 by the drum drive belt 4.
[0015]
A drum air outlet 6 (exhaust side) for discharging drying air 7 is provided at the rear of the drum, and the drying air and cooling air 8 for cooling the drying air are provided behind the drum air outlet 6. A fan casing 10 that functions as a blower for generating air (inhaled from outside the machine body) and houses a heat exchange fan 9 that also has a heat exchange function of cooling the drying air 7 is provided.
[0016]
The fan casing 10 has a labyrinth seal portion 11a formed of concentric ribs attached to the outer peripheral portion of the heat exchange fan and a labyrinth seal portion 11b of the fan case lid 12, and has a drying air side and a cooling air side. It is partitioned.
[0017]
The outlet for the dry air of the fan casing 10 is connected to the heater 3 through the M duct 13 and the F duct 14. The M duct 13 and the F duct 14 constitute a circulation air passage. The drying air circulated in the drum and discharged from the exhaust side is sent to a circulation air passage by a blower. The drying air circulating in the circulating air passage flows into the drum 2 from an intake side provided in front of the drum 2. The heater 3 provided in the circulation air passage and heating the drying air is placed adjacent to the suction side of the drum 2.
[0018]
15 is a belt for driving a heat exchange fan, 16 is a pulley for a heat exchange fan, 17 is a heat exchange fan support member, 18 is a door for opening and closing an opening for taking in and out a material to be dried provided in front of the outer frame 1, 19. Is a filter, 20 is a drum front fixing wall, and the drum 2 is rotatably fixed on its outer periphery.
[0019]
The heat exchange fan 9 includes a heat exchange section 21 and a labyrinth seal section 11a that separates drying air and cooling air. The heat exchange section 21 is configured by a blade having a corrugated cross section, and performs heat exchange between the drying air and the cooling air via the blade surface. By this heat exchange, the water vapor in the drying air is condensed and dehumidified.
[0020]
An opening / closing lid 23 and a cam motor 25 are arranged in the F duct 14. The lid 23 and the cam motor 25 constitute a lid opening / closing means. The lid opening / closing means is provided in the circulation air passage so as to be located on the upstream side of the heater 3.
[0021]
When the opening / closing lid 23 is open, the high-humidity drying air 7 flowing from the M duct 13 is discharged from the F duct hole 26 to the outside of the machine, and the low-humidity air 22 outside the machine through the F duct hole 26. Inhale (outside air). That is, when the lid opening / closing means is opened, the exhaust of the drying air and the supply of the outside air are simultaneously brought to the circulation air passage. The amount of ventilation by this exhaust and air supply is about half or less of the amount of circulation circulating in the circulation air passage.
[0022]
The internal circuit of the controller 27 of the clothes dryer is as shown in FIG. 2, and includes a drive circuit, a microcomputer for taking in external signals from panel buttons and drying degree detecting means, a power supply circuit for receiving power from a commercial power supply, and the like. Then, the drive of the induction motor is controlled by the motor (motor) 5, the heater 3, the cam motor 25, and the like.
[0023]
Regarding the clothes drying course, for example, a "standard" course for drying normal clothes and a "finishing" suitable for drying raw clothes, as shown in a frame indicated by C of the panel 28 shown in FIG. Course, "Iron" course that finishes with just the right amount of moisture for ironing, and "Disinfection", "Sweater", "Blanket", "Before drying", "Zuk" selected with the "Okonomi" button There is a drying course suitable for the type of material to be dried, such as a course.
[0024]
The operation method of the wind drying operation (wind drying course) is as follows. When the “wind drying” button K in the frame 28C on the panel 28 in FIG. 3 is pressed, the LED section (display 28L) on the left shoulder of the button shown in FIG. Lights up. The "wind drying" course time is of two types, 60 minutes and 120 minutes. The lighting time is a 60 minute course and the blinking time is a 120 minute course. When the "air drying" button K is pressed, the state changes from lighting to blinking to lighting to..., And the user selects one of them and presses the start button 28S to start operation.
[0025]
The operation of the air drying course is performed according to the flowchart of the air drying course (60 minutes) shown in FIG. The operation of the standard (warm air) drying course (heating drying operation) is executed according to the flowchart of the standard (warm air) drying course shown in FIG.
[0026]
When the air drying course is selected by the above-described operation, the heater 3 is not energized, the opening / closing lid 23 is opened, and the electric motor (motor) 5 is rotated. The dried air is hit by the air 22, which absorbs the moisture in the dried material, and circulates the high-humidity air into the F duct hole 26 and discharges the air to dry the dried material. The material to be dried is dried by the air drying operation using cold air without energizing the heater, so that the fabric is hardly damaged, and is suitable for drying clothes that are weak to heat.
[0027]
In this operation, the motor speed is set to 1400. This number of revolutions is a standard when a 50 Hz commercial power supply is energized with a full waveform.
[0028]
By increasing the number of rotations of the motor in this way, the rotation speed of the drum 2 and the heat exchange fan 9 is increased. Therefore, the time can be shortened by increasing the amount of air 22 outside the body taken in from the opening / closing lid 23.
[0029]
Here, an example in which the motor rotation speed is controlled to 1400 rotations has been described. However, when the full-wave operation without rotation control (commercial power supply is supplied with full waveform) is performed, 1570 rotations are performed at 60 Hz, and the operation noise is slightly increased. However, since the drying time is further shortened, the effect of shortening the time can be obtained even when the full-wave operation is performed.
[0030]
Also, regardless of whether the motor speed is controlled or not, the motor speed is set higher than it is now to shorten the time, thereby reducing the mechanical force applied to the material to be dried. Due to the synergistic effect of the drying method that does not apply heat to the object to be dried, ie, drying only by wind, the shrinkage and damage of the object to be dried can be significantly reduced.
[0031]
If the heater is turned on even if it is only a small part during the drying process, water evaporation evaporates and it is effective in shortening the drying time, but it has an adverse effect on "clothing shrinkage prevention". It is necessary to reduce the time without resorting to it. As shown in FIG. 10, it is possible to shorten the drying time by increasing the air volume, and since the air volume is increased by increasing the motor rotation speed as shown in FIG. 11, only during the air drying course. The motor rotation speed was set to 1400 rotations.
[0032]
Here, "1400 rotations only during the air-drying course" means that the capacity at the time of air-drying is 1 kg or less, which is usually 1/5 of the rated value, and the material of the fabric is the drying of the material to be dried for synthetic fibers. Because it is driving. That is, at such a capacity, as shown in FIG. 12, the maximum torque is 2 kg-cm even at the time of a compress where the drying of the material to be dried does not proceed, and therefore, at any power frequency (50 Hz / 60 Hz). Since the operation can be performed at 1400 revolutions or more, the air volume is increased from the beginning, and the operation time of the air drying by the cool air can be shortened.
[0033]
【The invention's effect】
According to the present invention, it is possible to suppress the shrinkage and damage of the clothes by the operation of the air drying with the cool air, and only in the case of the air drying, increase the rotation speed of the motor and increase the air volume, thereby shortening the drying time. Shortening can be achieved.
[Brief description of the drawings]
FIG. 1 is a vertical sectional view of a clothes dryer according to one embodiment of the present invention.
FIG. 2 is a block circuit diagram of a control unit according to one embodiment of the present invention.
FIG. 3 is a view showing a driving operation unit according to the embodiment of the present invention.
FIG. 4 is an enlarged view of a part of FIG. 3;
FIG. 5 is a flowchart of an air drying course according to an embodiment of the present invention.
FIG. 6 is a flow chart of a standard (warm air) drying course according to the embodiment of the present invention.
FIG. 7 is a diagram related to the conventional example, showing the relationship between motor rotation speed and torque at power supply frequencies of 50 Hz and 60 Hz.
FIG. 8 is a diagram related to a conventional example, showing the maximum motor rotation speed at a power supply frequency of 50 Hz and 60 Hz when a rated pack of 5.0 kg is inserted.
FIG. 9 relates to a conventional example, and shows a transition of the rotation speed at 50 Hz when a 5.0 kg compress is dried when the motor maximum rotation speed is set to 1400 rotations.
FIG. 10 is a diagram related to one embodiment of the present invention, showing the relationship between the air volume during drying and the drying time.
FIG. 11 is a diagram related to one embodiment of the present invention, showing the relationship between the motor rotation speed and the air volume.
FIG. 12 is a view showing a maximum motor rotation speed at a power supply frequency of 50 Hz and 60 Hz when a 1.0 kg compress is dried in an air drying course according to one embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Outer frame, 2 ... Drum, 3 ... Heater, 4 ... Drum drive belt, 5 ... Electric motor (motor), 6 ... Drum air outlet, 7 ... Cooling air, 8 ... Dry air, 9 ... Heat exchange fan, 10 ... Fan casing, 11a: heat exchange fan side labyrinth seal, 11b: fan casing side labyrinth seal, 12: fan casing lid, 13: M duct, 14: F duct, 15: belt for driving heat exchange fan, 16: heat Pulley for replacement fan, 17: heat exchange fan support member, 18: door, 19: filter, 20: fixed wall in front of drum, 21: heat exchange section, 22: air outside the body, 23: open / close lid, 24 ... A material to be dried, 25: lid opening / closing means, 26: F duct hole, 27: controller, 28: panel.

Claims (5)

被乾燥物を収納して回転するドラムと、前記ドラム内を環流してドラムの排気側から排出されて来た乾燥用空気を送る送風装置と、この送風装置から吐出される乾燥用空気を前記ドラムの吸気側に環流させる循環風路と、前記送風装置に設けられ、かつ機体外からの冷却用空気と前記乾燥用空気との熱交換を行うとともに乾燥用空気と冷却用空気のファンをも兼ねる熱交換ファンと、この熱交換ファンと前記ドラムを回転駆動する電動機と、前記ドラムに流入する前記乾燥用空気を加熱するヒータと、前記ヒータの上流側にあたる前記循環風路の部位を機体外に通じさせたり、閉ざしたりする蓋開閉手段とを有し、
前記蓋開閉手段を開いた状態で外気の給気/前記乾燥用空気の排気を同時にしながら前記ヒータの通電がともなわない冷風による風乾燥運転を設けたことを特徴とする衣類乾燥機。
A drum that stores and rotates the material to be dried, a blowing device that circulates through the drum and sends drying air discharged from the exhaust side of the drum, and a drying air that is discharged from the blowing device. A circulating air passage that recirculates to the suction side of the drum, and a fan for drying air and cooling air that is provided in the blower and exchanges heat between the cooling air and the drying air from outside the machine. A heat exchange fan that also serves as a heat exchange fan, an electric motor that rotationally drives the heat exchange fan and the drum, a heater that heats the drying air that flows into the drum, and a portion of the circulation air passage that is on the upstream side of the heater. Or with a lid opening and closing means to be closed,
A clothes dryer in which a wind-drying operation is performed with cold air without supplying electricity to the heater while simultaneously supplying outside air / exhausting the drying air while the lid opening / closing means is opened.
請求項1記載の衣類乾燥機において、
前記風乾燥運転は、前記ヒータの通電がともなう加熱乾燥運転に比べて前記電動機の回転数が高いことを特徴とする衣類乾燥機。
The clothes dryer according to claim 1,
The clothes dryer according to claim 1, wherein the wind drying operation has a higher rotation speed of the electric motor than a heating drying operation in which the heater is energized.
請求項1記載の衣類乾燥機において、
前記風乾燥運転は、前記ヒータの通電がともなう加熱乾燥運転に比べて前記熱交換ファンの回転数が高いことを特徴とする衣類乾燥機。
The clothes dryer according to claim 1,
The clothes dryer according to claim 1, wherein the wind drying operation has a higher rotation speed of the heat exchange fan than a heating drying operation in which the heater is energized.
請求項2または3記載の衣類乾燥機において、
前記電動機として誘導電動機を用い、
前記回転数は、50Hzの商用電源を全波形で通電させる場合を目安とすることを特徴とする衣類乾燥機。
The clothes dryer according to claim 2 or 3,
Using an induction motor as the motor,
A clothes dryer characterized in that the rotation speed is a standard when a 50 Hz commercial power supply is energized with a full waveform.
請求項2または3記載の衣類乾燥機において、
前記風乾燥運転は、商用電源を全波形の通電で行うことを特徴とする衣類乾燥機。
The clothes dryer according to claim 2 or 3,
The clothes drying machine is characterized in that the air drying operation is performed by applying a commercial power supply to all waveforms.
JP2003153174A 2003-05-29 2003-05-29 Clothes dryer Expired - Fee Related JP4638660B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008110135A (en) * 2006-10-31 2008-05-15 Toshiba Corp Washing machine
JP2010063752A (en) * 2008-09-12 2010-03-25 Toshiba Corp Washing and drying machine
US20220365137A1 (en) * 2021-05-13 2022-11-17 Schweitzer Engineering Laboratories, Inc. Condition-based monitoring systems, methods, and apparatuses

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008110135A (en) * 2006-10-31 2008-05-15 Toshiba Corp Washing machine
JP2010063752A (en) * 2008-09-12 2010-03-25 Toshiba Corp Washing and drying machine
US20220365137A1 (en) * 2021-05-13 2022-11-17 Schweitzer Engineering Laboratories, Inc. Condition-based monitoring systems, methods, and apparatuses
US11828805B2 (en) * 2021-05-13 2023-11-28 Schweitzer Engineering Laboratories, Inc. Condition-based monitoring systems, methods, and apparatuses

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