JP4924521B2 - Washing and drying machine - Google Patents

Washing and drying machine Download PDF

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JP4924521B2
JP4924521B2 JP2008107646A JP2008107646A JP4924521B2 JP 4924521 B2 JP4924521 B2 JP 4924521B2 JP 2008107646 A JP2008107646 A JP 2008107646A JP 2008107646 A JP2008107646 A JP 2008107646A JP 4924521 B2 JP4924521 B2 JP 4924521B2
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air passage
drying
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movable body
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JP2009254615A (en
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邦弘 鶴田
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Panasonic Corp
Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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Description

本発明は、衣類の洗濯および乾燥をおこなう洗濯乾燥機に関するものである。   The present invention relates to a washing / drying machine for washing and drying clothes.

従来、この種の洗濯乾燥機は、衣類を投入して、洗濯、脱水、乾燥をおこなうものであり、特に、洗濯、脱水に続いて乾燥をおこなう場合は、限られた狭い空間内で衣類の乾燥をおこなうことから、乾燥後の衣類は強いシワがついた状態になるという問題があり、その解決に種々の方法が考えられている。   Conventionally, this type of washing / drying machine is for washing, dehydrating and drying by putting in clothes. Especially when drying is performed after washing and dehydration, the clothes are dried in a limited space. Since drying is performed, there is a problem that the clothes after drying are in a state of strong wrinkles, and various methods have been considered for solving the problem.

その１つは、乾燥工程において温風循環経路にミストを噴霧して乾燥終了後のシワを低減することである（例えば、特許文献１参照）。他の１つは、ヒートポンプ装置により乾燥用空気を所定の温度以下に制御することでシワを低減することである（例えば、特許文献２参照）。さらに、他の１つは、洗濯物の出し入れを容易にするために、ドラムを前上がりに傾斜させたドラム式洗濯乾燥機が考えられているが、洗濯物がドラムの底面側に偏る状態を攪拌体により改善してシワを少なくすることである（例えば、特許文献３参照）。
特開２００３−３１１０６７号公報 特開２００４−３５８０２８号公報 特開２００６−１５８４８８号公報 One of them is to reduce wrinkles after completion of drying by spraying mist on the warm air circulation path in the drying process (see, for example, Patent Document 1). The other one is to reduce wrinkles by controlling the drying air to a predetermined temperature or less with a heat pump device (see, for example, Patent Document 2). Furthermore, the other one is a drum-type washing / drying machine in which the drum is tilted forward in order to facilitate the taking in and out of the laundry. This is to reduce wrinkles by improving the stirring body (see, for example, Patent Document 3).
JP 2003-311067 A JP 2004-358028 A JP 2006-158488 A

しかしながら、前記従来のミストを噴霧して衣類を加湿しながら乾燥する構成、ならびに、所定の温度以下の乾燥用空気により低温で乾燥をおこなう構成では、乾燥に時間がかかるという問題がある。また、攪拌体により衣類の偏りをなくす構成では、ドラム内で衣類を分散させることができるので乾燥時間を短縮することができるものの、衣類に対して攪拌による機械力が作用してシワを少なくするという効果は十分ではなかった。   However, there is a problem that it takes time to dry the structure in which the conventional mist is sprayed to dry while humidifying the clothes and the structure in which drying is performed at a low temperature with drying air of a predetermined temperature or lower. Further, in the configuration in which the clothes are not biased by the stirring body, the clothes can be dispersed in the drum, so that the drying time can be shortened. However, mechanical force by stirring acts on the clothes to reduce wrinkles. The effect was not enough.

本発明は、前記従来の課題を解決するもので、乾燥終了後の衣類のシワを少なくすることを目的とする。   This invention solves the said conventional subject, and it aims at reducing the wrinkle of the clothing after completion | finish of drying.

前記従来の課題を解決するために、本発明の洗濯乾燥機は、洗濯物を収容する回転ドラムと、前記回転ドラムを内装した筐体と、前記回転ドラムを内包し前記筐体内に支持された水槽と、前記水槽の背面に設け前記回転ドラムの回転軸を水平または前上がりに傾斜して回転させるドラム駆動モータと、前記水槽の背面および周側面に開口した給気口および排気口と、一端が前記排気口に接続され他端が前記給気口に接続された乾燥用空気の循環風路と、前記回転ドラム内と前記循環風路に乾燥用空気を送風する送風機と、前記回転ドラム内に収容した洗濯物から水分を奪った乾燥用空気を除湿する除湿手段と、前記除湿手段により除湿した乾燥用空気を加熱する加熱手段と、乾燥用空気が通過する前記循環風路の断面積を可変する空気通過断面積可変手段と、前記送風機と前記空気通過断面積可変手段を制御する制御手段とを備え、前記制御手段は、乾燥運転を開始してから第１の所定時間が経過するまで前記空気通過断面積可変手段により前記循環風路を第１の断面積に設定するとともに前記送風機を第１の回転数で回転させ、第１の所定時間経過後は、前記空気通過断面積可変手段により前記循環風路を第１の断面積より少ない第２の断面積に設定するとともに前記送風機を第１の回転数より多い第２の回転数で回転させるようにしたものである。   In order to solve the above-described conventional problems, a washing and drying machine according to the present invention includes a rotating drum that accommodates laundry, a casing that includes the rotating drum, a rotary drum that includes the rotating drum, and is supported in the casing. A water tank, a drum drive motor that is provided on the back surface of the water tank and rotates the rotation axis of the rotary drum while tilting horizontally or upward, an air supply port and an exhaust port that are open on the back surface and the peripheral side surface of the water tank, and one end Is connected to the exhaust port, the other end of which is connected to the air supply port, a circulating air passage for drying air, a blower for blowing the drying air into the rotating drum and the circulating air passage, and the inside of the rotating drum The dehumidifying means for dehumidifying the drying air deprived of moisture from the laundry contained in the laundry, the heating means for heating the drying air dehumidified by the dehumidifying means, and the cross-sectional area of the circulation air passage through which the drying air passes Variable air passage interruption Product variable means, and control means for controlling the blower and the air passage cross-sectional area variable means, the control means, the air passage cross-sectional area until a first predetermined time has elapsed since the start of the drying operation. The circulating air passage is set to a first cross-sectional area by a variable means, and the blower is rotated at a first rotational speed. After the first predetermined time has elapsed, the circulating air passage is changed by the air passage cross-sectional area variable means. Is set to a second cross-sectional area smaller than the first cross-sectional area, and the blower is rotated at a second rotational speed greater than the first rotational speed.

これによって、衣類のシワ固着が少ない乾燥序盤（乾燥運転を開始してから第１の所定時間経過するまで）は、空気通過断面積を大きくしているので、大風量の風を送風機の少ない回転数で得ることができ、乾燥時間の短縮と、送風機の消費電力が低減できる。そして、乾燥中盤以降（第１の所定時間経過後）は、空気通過断面積を小さくし、送風機を大きな回転数で回転させるので、風速を高めた温風が衣類に送風され、衣類に固着するシワを低減し、同時に、大電力を用いて送風機を大きな回転数で回転させるので、大風量の風が得られるとともに、大電力運転で発生した熱が温風に付与されるので温風温度が上昇し、乾燥時間の短縮が図れ、乾燥終了後の衣類のシワを効果的に低減する。併せて、消費電力も抑制される。   As a result, the air drying cross-sectional area is increased in the early drying stage (from the start of the drying operation until the first predetermined time elapses), so that the garment has less wrinkle sticking. It can be obtained in a number, and the drying time can be shortened and the power consumption of the blower can be reduced. Then, after the middle of drying (after the first predetermined time has elapsed), the air passage cross-sectional area is reduced and the blower is rotated at a large rotational speed, so that warm air with increased wind speed is blown to the clothing and fixed to the clothing. Wrinkles are reduced, and at the same time, a large amount of power is used to rotate the blower at a large rotational speed, so that a large amount of wind is obtained and the heat generated by the large power operation is applied to the warm air, so the warm air temperature is reduced. As a result, the drying time can be shortened, and the wrinkles of the clothes after drying is effectively reduced. In addition, power consumption is also suppressed.

本発明の洗濯乾燥機は、乾燥終了後の衣類のシワを効果的に低減することができる。   The washing / drying machine of the present invention can effectively reduce wrinkles of clothes after drying.

第１の発明は、洗濯物を収容する回転ドラムと、前記回転ドラムを内装した筐体と、前記回転ドラムを内包し前記筐体内に支持された水槽と、前記水槽の背面に設け前記回転ドラムの回転軸を水平または前上がりに傾斜して回転させるドラム駆動モータと、前記水槽の背面および周側面に開口した給気口および排気口と、一端が前記排気口に接続され他端が前記給気口に接続された乾燥用空気の循環風路と、前記回転ドラム内と前記循環風路に乾燥用空気を送風する送風機と、前記回転ドラム内に収容した洗濯物から水分を奪った乾燥用空気を除湿する除湿手段と、前記除湿手段により除湿した乾燥用空気を加熱する加熱手段と、乾燥用空気が通過する前記循環風路の断面積を可変する空気通過断面積可変手段と、前記送風機と前記空気通過断面積可変手段を制御する制御手段とを備え、前記制御手段は、乾燥運転を開始してから第１の所定時間が経過するまで前記空気通過断面積可変手段により前記循環風路を第１の断面積に設定するとともに前記送風機を第１の回転数で回転させ、第１の所定時間経過後は、前記空気通過断面積可変手段により前記循環風路を第１の断面積より少ない第２の断面積に設定するとともに前記送風機を第１の回転数より多い第２の回転数で回転させるようにしたことにより、衣類のシワ固着が少ない乾燥序盤（乾燥運転を開始してから第１の所定時間経過するまで）は、空気通過断面積を大きくしているので、大風量の風を送風機の少ない回転数で得ることができ、乾燥時間の短縮と、送風機の消費電力の低減がはかれる。そして、乾燥中盤以降（第１の所定時間経過後）は、空気通過断面積を小さくし、送風機を大きな回転数で回転させるので、風速を高めた温風が衣類に送風され、衣類に固着するシワを低減し、同時に、大電力を用いて送風機を大きな回転数で回転させるので、大風量の風が得られるとともに、大電力運転で発生した熱が温風に付与されるので温風温度が上昇し、乾燥時間の短縮が図れ、乾燥終了後の衣類のシワを効果的に低減する。併せて、消費電力も抑制される。   According to a first aspect of the present invention, there is provided a rotating drum for storing laundry, a casing in which the rotating drum is housed, a water tank containing the rotating drum and supported in the casing, and the rotating drum provided on the back surface of the water tank. A drum drive motor that rotates the rotation axis of the water tank horizontally or upwardly, an air supply port and an exhaust port that are open on the back surface and the peripheral side surface of the water tank, one end connected to the exhaust port, and the other end A circulation air passage for drying air connected to the air mouth, a blower for blowing drying air into the rotary drum and the circulation air passage, and a drying air deprived of the laundry contained in the rotation drum Dehumidifying means for dehumidifying air, heating means for heating the drying air dehumidified by the dehumidifying means, air passage cross-sectional area varying means for varying the cross-sectional area of the circulating air passage through which the drying air passes, and the blower And the air passage Control means for controlling the area variable means, and the control means first disconnects the circulation air passage by the air passage cross-sectional area variable means until a first predetermined time has elapsed since the start of the drying operation. The area is set and the blower is rotated at a first rotational speed, and after the first predetermined time has elapsed, the circulating air passage is less than the first sectional area by the air passage sectional area variable means. By setting the area and rotating the blower at a second rotational speed that is greater than the first rotational speed, the initial stage of drying (the first predetermined time after the start of the drying operation) Since the air passage cross-sectional area is increased, a large amount of air can be obtained at a low rotational speed of the blower, and the drying time can be shortened and the power consumption of the blower can be reduced. Then, after the middle of drying (after the first predetermined time has elapsed), the air passage cross-sectional area is reduced and the blower is rotated at a large rotational speed, so that warm air with increased wind speed is blown to the clothing and fixed to the clothing. Wrinkles are reduced, and at the same time, a large amount of power is used to rotate the blower at a large rotational speed, so that a large amount of wind is obtained and the heat generated by the large power operation is applied to the warm air, so the warm air temperature is reduced. As a result, the drying time can be shortened, and the wrinkles of the clothes after drying is effectively reduced. In addition, power consumption is also suppressed.

第２の発明は、特に、第１の発明の空気通過断面積可変手段は、循環風路内に可動自在に設けた可動体と、前記可動体を駆動する可動体駆動手段を有する構成としたことにより、可動体の位置を循環風路の通路断面積が変わるように変位させるだけの簡単な構成で、乾燥用空気が通過する空気通過断面積を容易に可変することができる。   According to the second invention, in particular, the air passage cross-sectional area varying means according to the first invention includes a movable body movably provided in the circulation air passage and a movable body driving means for driving the movable body. Accordingly, the air passage cross-sectional area through which the drying air passes can be easily varied with a simple configuration in which the position of the movable body is simply displaced so that the passage cross-sectional area of the circulation air passage changes.

第３の発明は、特に、第１または第２の発明の空気通過断面積可変手段は、循環風路内に可動体を回動自在に設け、前記可動体は、乾燥運転を開始してから第１の所定時間が経過するまで乾燥用空気の送風方向と略平行状態に位置させて第１の断面積に設定するとともに、第１の所定時間経過後は、乾燥用空気の送風方向と略直交状態に変位させて第２の断面積に設定するようにしたことにより、第１の断面積と第２の断面積の切り替えが可動体の回転動作によって的確におこなえるとともに、送風機を少ない回転数で大風量の温風を第１の断面積で送風することができ、また、送風機を大きな回転数で風速を高めた温風
を第２の断面積で送風して、衣類のシワを低減することができる。 According to a third aspect of the invention, in particular, the air passage cross-sectional area variable means of the first or second aspect of the present invention is provided with a movable body that can rotate in the circulation air passage, and the movable body starts drying operation. Until the first predetermined time elapses, the air is positioned substantially in parallel with the drying air blowing direction and set to the first cross-sectional area. After the first predetermined time has elapsed, the drying air blowing direction is substantially the same. By switching to an orthogonal state and setting the second cross-sectional area, the first cross-sectional area and the second cross-sectional area can be accurately switched by the rotating operation of the movable body, and the fan can be rotated at a low rotational speed. The large amount of warm air can be blown with the first cross-sectional area, and the warm air with a high rotation speed at a high rotational speed is blown with the second cross-sectional area to reduce wrinkles of clothing. be able to.

第４の発明は、特に、第１または第２の発明の空気通過断面積可変手段は、循環風路に対して可動体を進退自在に設け、前記可動体は、乾燥運転を開始してから第１の所定時間が経過するまで前記循環風路外に位置させて第１の断面積に設定するとともに、第１の所定時間経過後は、前記循環風路内に位置させて第２の断面積に設定するようにしたことにより、第１の断面積と第２の断面積の切り替えが可動体の進退動作によって的確におこなえるとともに、送風機を少ない回転数で大風量の温風を第１の断面積で送風することができ、また、送風機を大きな回転数で風速を高めた温風を第２の断面積で送風して、衣類のシワを低減することができる。   According to a fourth aspect of the invention, in particular, the air passage cross-sectional area variable means of the first or second aspect of the invention is provided with a movable body that can move forward and backward with respect to the circulation air passage, and the movable body starts drying operation. The first cross section is positioned outside the circulation air passage until the first predetermined time elapses and is set to the first cross-sectional area. After the first predetermined time elapses, the second cross section is placed inside the circulation air passage. By setting the area, the switching between the first cross-sectional area and the second cross-sectional area can be performed accurately by the advance and retreat operation of the movable body, and a large amount of hot air is supplied to the first air at a low rotational speed. It is possible to blow air with a cross-sectional area, and it is possible to reduce the wrinkles of clothes by blowing warm air with a high rotational speed at a high rotational speed with the second cross-sectional area.

第５の発明は、特に、第２〜第４のいずれか１つの発明の空気通過断面積可変手段は、可動体に多数の***を設けて第２の断面積に設定するようにしたことにより、第２の断面積に容易に設定することができる。   In the fifth aspect of the invention, in particular, the air passage cross-sectional area variable means according to any one of the second to fourth aspects of the invention is provided with a large number of small holes in the movable body and set to the second cross-sectional area. The second cross-sectional area can be easily set.

第６の発明は、特に、第２〜第４のいずれか１つの発明の空気通過断面積可変手段は、循環風路と可動体との間に隙間を設けて第２の断面積に設定するようにしたことにより、第２の断面積に容易に設定することができる。   In the sixth aspect of the invention, in particular, the air passage cross-sectional area variable means of any one of the second to fourth aspects of the invention is set to the second cross-sectional area by providing a gap between the circulation air passage and the movable body. By doing so, the second cross-sectional area can be easily set.

第７の発明は、特に、第１〜第６のいずれか１つの発明の洗濯物の量を検知する布量検知手段を設け、制御手段は、前記布量検知手段により検知した布量に基いて第１の所定時間を設定するようにしたことにより、洗濯物の量に応じて第１の所定時間を精度よく設定することができる。   According to a seventh aspect of the invention, in particular, a cloth amount detecting means for detecting the amount of laundry according to any one of the first to sixth aspects is provided, and the control means is based on the amount of cloth detected by the cloth amount detecting means. By setting the first predetermined time, the first predetermined time can be accurately set according to the amount of laundry.

第８の発明は、特に、第１〜第７のいずれか１つの発明の制御手段は、空気通過断面積可変手段により循環風路を第２の断面積に設定するとともに送風機を第２の回転数で回転させて第２の所定時間経過後、第３の所定時間第１の断面積で第１の回転数により回転させて乾燥運転を終了するようにしたことにより、シワ固着が一層少なくでき、かつ、送風機の電力消費を少なくすることができる。   In the eighth aspect of the invention, in particular, the control means of any one of the first to seventh aspects of the invention sets the circulation air passage to the second cross-sectional area by the air passage cross-sectional area varying means and rotates the blower in the second rotation. After the second predetermined time has elapsed after rotating for a number of times, the drying operation is terminated by rotating the first predetermined number of cross-sectional areas for the third predetermined time to finish the drying operation. In addition, the power consumption of the blower can be reduced.

以下、本発明の実施の形態を、図面を参照しながら説明する。なお、本発明の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by the form of this invention.

（実施の形態１）
図１は、本発明の実施の形態１の洗濯乾燥機の構成図、図２は空気通過断面積可変手段の断面図、図３は同側面図である。洗濯乾燥機は、筐体１内にサスペンション２によって弾性支持される水槽３と、この水槽３内に洗濯物を収容する回転ドラム４を回転可能に設けている。回転ドラム４の前面側には洗濯物を出し入れする投入口５を設けて扉６により開閉自在とし、投入口５を設けた前面側を前上がりに傾斜させている。回転ドラム４は、水槽４の背面側に設けたドラム駆動モータ７により正逆回転駆動し、制御手段８によって制御される。 (Embodiment 1)
FIG. 1 is a configuration diagram of a washing and drying machine according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view of air passage cross-sectional area varying means, and FIG. 3 is a side view thereof. The washing / drying machine is provided with a water tank 3 elastically supported by a suspension 2 in a housing 1 and a rotating drum 4 for storing laundry in the water tank 3 in a rotatable manner. The front side of the rotating drum 4 is provided with a loading port 5 for taking in and out the laundry and can be opened and closed by a door 6, and the front side provided with the loading port 5 is inclined forward and upward. The rotating drum 4 is driven to rotate forward and backward by a drum driving motor 7 provided on the back side of the water tank 4 and controlled by the control means 8.

水槽３の背面に開口した給気口９と側周面に開口した排気口１０に乾燥用空気が循環する循環風路１１を接続している。循環風路１１には、乾燥用空気を送風する送風機１２と、回転ドラム４内の洗濯物から奪った水分を除湿する除湿手段１３と、この除湿手段１３で除湿した空気を加熱する加熱手段１４を配置している。水槽３に開口した給気口９と排気口１０は、ドラム駆動モータ７より上方に配設され、洗濯および脱水で発生する水が循環風路１１内へ浸入しないようにしている。   A circulation air passage 11 through which drying air circulates is connected to an air supply port 9 opened on the back surface of the water tank 3 and an exhaust port 10 opened on the side peripheral surface. In the circulation air passage 11, a blower 12 for blowing drying air, a dehumidifying means 13 for dehumidifying moisture taken from the laundry in the rotating drum 4, and a heating means 14 for heating the air dehumidified by the dehumidifying means 13. Is arranged. An air supply port 9 and an exhaust port 10 opened in the water tank 3 are disposed above the drum drive motor 7 so that water generated by washing and dehydration does not enter the circulation air passage 11.

給気口９近傍の循環風路１１には、乾燥用空気が通過する循環風路１１の断面積を可変
する空気通過断面積可変手段１５を設けている。この空気通過断面積可変手段１５は、循環風路１１内に可動自在に設けた可動体１６と、この可動体１６を駆動するモータで構成した可動体駆動手段１７を循環風路１１外に設けて構成している。 The circulation air passage 11 near the air supply port 9 is provided with air passage cross-sectional area varying means 15 for varying the cross-sectional area of the circulation air passage 11 through which drying air passes. The air passage cross-sectional area varying means 15 is provided outside the circulation air passage 11 with a movable body 16 movably provided in the circulation air passage 11 and a movable body driving means 17 constituted by a motor for driving the movable body 16. Is configured.

可動体１６は、循環風路１１内の偏った位置に設けた回転軸１８を中心に回動自在に設けて可動体駆動手段１７で駆動され、乾燥用空気の送風方向イと略平行状態となる（ａ）位置と、送風方向イと略直交状態となる（ｂ）位置とに切り替えられ、矢印ロ方向に動作するよう制御手段８により制御される。可動体１６には、送風方向イと略直交状態となる（ｂ）位置にあるときは、乾燥用空気が通過する循環風路１１の断面積が少なくなるように複数の小孔１９を設けている。   The movable body 16 is rotatably provided around a rotating shaft 18 provided at a biased position in the circulation air passage 11 and is driven by the movable body driving means 17 so as to be in a state substantially parallel to the blowing direction of drying air. (A) position and (b) position which is substantially orthogonal to the air blowing direction A, and are controlled by the control means 8 so as to operate in the arrow B direction. The movable body 16 is provided with a plurality of small holes 19 so that the cross-sectional area of the circulation air passage 11 through which the drying air passes is reduced when the movable body 16 is in the position (b) that is substantially orthogonal to the blowing direction a. Yes.

次に、本発明の洗濯乾燥機の動作を説明する。回転ドラム４内に投入口５から洗濯物と洗剤を投入して扉６を閉め、スタート釦（図示せず）を押すと、洗濯物の量を検知する布量検知手段２０により投入された洗濯物の量に応じて設定されている水量が注水され、ドラム駆動モータ７により回転ドラム４を回転駆動して洗濯工程が実行される。その後、水が注水されて洗剤が洗い流され、回転ドラム４が高速回転して脱水がおこなわれる。制御手段８は、洗濯工程、脱水工程、すすぎ工程等、予め設定されたプログラムにしたがい、続いて乾燥工程を逐次実行する。   Next, the operation of the washing / drying machine of the present invention will be described. When laundry and detergent are put into the rotating drum 4 from the slot 5 and the door 6 is closed and a start button (not shown) is pressed, the laundry put in by the cloth amount detecting means 20 for detecting the amount of laundry. The amount of water set according to the amount of the object is poured, and the drum driving motor 7 rotates the rotating drum 4 to execute the washing process. Thereafter, water is poured to wash away the detergent, and the rotating drum 4 rotates at high speed to perform dehydration. The control means 8 sequentially executes the drying process in accordance with a preset program such as a washing process, a dehydrating process, and a rinsing process.

乾燥工程では、送風機１２により循環風路１１に乾燥用空気が送風され、回転ドラム４内で脱水された洗濯物から水分を奪い、湿った空気が排気口１０から循環風路１１に入って除湿手段１３で冷却除湿される。除湿された低温低湿の乾いた空気は加熱手段１４で加熱されて給気口９から回転ドラム４内へ入り、この一連の動作を繰り返し乾燥用空気が循環風路１１を循環して衣類の乾燥が進行する。この間、回転ドラム４は所定の回転数で正逆回転を繰り返して衣類を攪拌する。   In the drying process, drying air is blown to the circulation air passage 11 by the blower 12, moisture is taken away from the laundry dehydrated in the rotary drum 4, and the moist air enters the circulation air passage 11 from the exhaust port 10 and dehumidifies. Cooling and dehumidification is performed by means 13. The dehumidified low-temperature and low-humidity dry air is heated by the heating means 14 and enters the rotary drum 4 through the air supply port 9. This series of operations is repeated and the drying air circulates in the circulation air passage 11 to dry the clothes. Progresses. During this time, the rotating drum 4 repeats forward and reverse rotation at a predetermined rotational speed to stir the clothes.

乾燥運転を開始してから第１の所定時間Ｔ１が経過するまでは、循環風路１１を通過する乾燥用空気の通過断面積が大きくなるように、制御手段８によって空気通過断面積可変手段１５の可動体１６が、可動体駆動手段１７で駆動されて乾燥用空気の送風方向イと略平行状態となる（ａ）位置とし、第１の断面積に設定するとともに送風機１２を第１の回転数で回転させる。そして、第１の所定時間Ｔ１経過後は、可動体１６を送風方向イと略直交状態となる（ｂ）位置へと変位させて乾燥用空気が小孔１９を通過するようにする。   From the start of the drying operation until the first predetermined time T1 elapses, the air passage cross-sectional area variable means 15 is controlled by the control means 8 so that the passage cross-sectional area of the drying air passing through the circulation air passage 11 becomes large. The movable body 16 is driven by the movable body driving means 17 to be in a position (a) where the air is in a state substantially parallel to the blowing direction of the drying air, and is set to the first cross-sectional area and the blower 12 is first rotated. Rotate by number. And after 1st predetermined time T1 progress, the movable body 16 is displaced to the (b) position used as a substantially orthogonal state with the ventilation direction (a), and drying air passes through the small hole 19. FIG.

可動体１６の先端部１６ａは、循環風路１１に設けた受部１１ａで支持されるようにしているので、送風機１２から大風量の風が可動体１６を押圧しても受部１１ａで支持されて、送風方向イと略直交状態となる（ｂ）位置に保持することができるようにしている。したがって、循環風路１１は第１の断面積より少ない第２の断面積に設定するとともに、送風機１２を第１の回転数より多い第２の回転数で回転させる。   Since the distal end portion 16a of the movable body 16 is supported by the receiving portion 11a provided in the circulation air passage 11, it is supported by the receiving portion 11a even if a large amount of wind presses the movable body 16 from the blower 12. Thus, it can be held at the position (b) that is substantially orthogonal to the blowing direction (a). Therefore, the circulation air passage 11 is set to a second cross-sectional area that is smaller than the first cross-sectional area, and the blower 12 is rotated at a second rotational speed that is greater than the first rotational speed.

衣類のシワ固着が少ない乾燥序盤（乾燥運転を開始してから第１の所定時間Ｔ１経過するまで）は、空気通過断面積を大きくしているので、大風量の風を送風機１２の少ない第１の回転数で得ることができ、乾燥時間の短縮と送風機１２の消費電力の低減がはかれる。そして、乾燥中盤以降（第１の所定時間Ｔ１経過後）は、空気通過断面積を第１の断面積より小さい第２の断面積とし、送風機１２を第１の回転数より大きな第２の回転数で回転させるので、風速を速めた温風が衣類に送風され、衣類に固着するシワを低減し、同時に、大電力を用いて送風機１２を大きな回転数で回転させるので、大風量の風が得られるとともに、大電力運転で発生した熱が温風に付与されるので温風温度が上昇し、乾燥時間の短縮が図れ、乾燥終了後の衣類のシワを効果的に低減する。   Since the air passage cross-sectional area is increased at the beginning of drying (from the start of the drying operation until the first predetermined time T1 elapses) when the clothes are less wrinkled, the first air with a large amount of air is sent to the Thus, the drying time can be shortened and the power consumption of the blower 12 can be reduced. Then, after the middle of drying (after the first predetermined time T1 has elapsed), the air passage cross-sectional area is set to a second cross-sectional area smaller than the first cross-sectional area, and the blower 12 is rotated at a second speed higher than the first rotational speed. Since the warm air with the increased wind speed is blown to the garment, the wrinkles adhering to the garment are reduced, and at the same time, the blower 12 is rotated at a large rotational speed using a large electric power. As well as being obtained, the heat generated by the high-power operation is applied to the warm air, so that the temperature of the warm air rises, the drying time can be shortened, and the wrinkles of the clothes after the drying are effectively reduced.

乾燥運転を開始してから循環風路１１を第２の断面積に切り替える第１の所定時間Ｔ１
は、タイマーによる乾燥開始からの経過時間や、衣類の乾燥状態を検知する目的で循環風路１１などに配置した温度センサ（図示せず）などの乾燥度検知手段などで決められる。その時期は、乾燥の中盤であり、乾燥率で表現すると８５〜９５％の領域において任意に決めた乾燥率であり、図４のタイムチャートに示す通りである。 A first predetermined time T1 for switching the circulation air passage 11 to the second cross-sectional area after starting the drying operation.
Is determined by a dryness detection means such as a temperature sensor (not shown) arranged in the circulation air passage 11 or the like for the purpose of detecting the elapsed time from the start of drying by a timer or the dry state of clothes. The period is the middle stage of drying, and when expressed in terms of drying rate, the drying rate is arbitrarily determined in the region of 85 to 95%, as shown in the time chart of FIG.

乾燥運転の前半（前述の乾燥率より小さい乾燥率領域）は、衣類は水分を多量に含んでいるので柔らかく、衣類に当たる温風の速度の高低に関わらず、シワは固着し難い。一方、乾燥中盤以降（前述の乾燥率より大きい乾燥率領域）は、衣類は水分を僅かしか含んでいないのでやや硬く、低速温風による乾燥運転によれば、衣類を広げる力が弱いのでシワが多く固着するが、温風の速度を高速化することによって、衣類を広げる力が強くすることができ、シワの固着を少なくすることができる。   In the first half of the drying operation (drying rate region smaller than the above-described drying rate), since the clothes contain a large amount of moisture, the clothes are soft, and the wrinkles are hardly fixed regardless of the speed of the warm air hitting the clothes. On the other hand, after the middle of drying (drying rate region larger than the above-mentioned drying rate), the clothes are slightly hard because they contain a little moisture, and the drying operation with low-speed hot air causes weak wrinkles because the force to spread the clothes is weak. Although it adheres a lot, by increasing the speed of the warm air, the force for spreading the clothes can be strengthened, and wrinkle sticking can be reduced.

次に、可動体１６により空気通過断面積を大と小に変化させた場合の送風機１２の特性を図５〜図８に示す。図５は送風機の消費電力と回転数の関係、図６は送風機の消費電力と送風量の関係、図７は送風機の回転数と送風量の関係、図８は送風機の回転数と風速の関係を各々示している。実線は、空気通過断面積を小にした場合の特性曲線、破線は、空気通過断面積を大にした場合の特性曲線である。両者の相違を明確にするため、同一の送風量を得るために必要な特性値を、空気通過断面積を小にした場合は○、空気通過断面積を大にした場合は▲としている。   Next, the characteristics of the blower 12 when the movable body 16 changes the air passage cross-sectional area between large and small are shown in FIGS. FIG. 5 shows the relationship between the power consumption of the blower and the rotational speed, FIG. 6 shows the relationship between the power consumption of the blower and the air flow rate, FIG. 7 shows the relationship between the rotational speed of the air blower and the air flow rate, and FIG. Respectively. A solid line is a characteristic curve when the air passage cross-sectional area is reduced, and a broken line is a characteristic curve when the air passage cross-sectional area is increased. In order to clarify the difference between the two, the characteristic values necessary to obtain the same air flow rate are indicated as ◯ when the air passage cross-sectional area is made small and ▲ when the air passage cross-sectional area is made large.

空気通過断面積を小にすると、送風機１２は電力を大きくして回転数を高くする必要があり、このことで給気口９を通過する風速が速くなる。一方、これと同一の送風量を得るためには、空気通過断面積を大にすると、送風機１２は電力と回転数が小さくすみ、給気口９を通過する風速も低くなる。   When the air passage cross-sectional area is reduced, the blower 12 needs to increase the electric power to increase the rotation speed, and this increases the speed of the wind passing through the air supply port 9. On the other hand, if the air passage cross-sectional area is increased in order to obtain the same air flow rate, the blower 12 requires less power and rotational speed, and the wind speed passing through the air supply port 9 is also reduced.

これらのことより、衣類のシワ固着への影響が小さい乾燥前半（乾燥開始から第１の所定時間Ｔ１経過するまで）は、送風機１２を少ない回転数で回転させ、可動体１６を開いた状態にして空気通過断面積を大きくすると、送風機１２の消費電力が小さくなる。   For these reasons, during the first half of drying (until the first predetermined time T1 elapses from the start of drying), which has a small influence on the wrinkle sticking of clothes, the blower 12 is rotated at a small number of rotations, and the movable body 16 is opened. When the air passage cross-sectional area is increased, the power consumption of the blower 12 is decreased.

したがって、衣類のシワ固着が少ない乾燥中盤以前（乾燥開始から第１の所定時間Ｔ１経過するまで）は、可動体１６を開いた状態にして空気通過断面積を大きくしているので、大風量の風を、送風機１２を少ない回転数で回転させることで得ることができる。そのため、乾燥時間の短縮と、送風機１２の消費電力が低減できる。   Therefore, before the middle of the drying period where the garment is less wrinkled (from the start of drying until the first predetermined time T1 elapses), the movable body 16 is opened to increase the air passage cross-sectional area. Wind can be obtained by rotating the blower 12 at a low rotational speed. Therefore, the drying time can be shortened and the power consumption of the blower 12 can be reduced.

乾燥中盤以降（第１の所定時間Ｔ１経過後）は、可動体１６を閉じた状態にして空気通過断面積を小さくし、送風機１２を大きな回転数で回転させるので、風速を高めた温風が衣類に送風され、衣類に固着するシワが低減する。また同時に、大電力を用いて送風機１２を大きな回転数で回転させているので、大風量の風が得られるとともに、大電力運転で発生した熱が温風に付与されるので温風温度が上昇し、乾燥時間の短縮が図れる。   After the middle of drying (after the first predetermined time T1 elapses), the movable body 16 is closed and the air passage cross-sectional area is reduced, and the blower 12 is rotated at a large rotational speed. Wrinkles that are blown to the clothing and stick to the clothing are reduced. At the same time, since the blower 12 is rotated at a high rotational speed using a large amount of power, a large amount of wind is obtained and the heat generated by the large power operation is applied to the warm air, so that the warm air temperature rises. In addition, the drying time can be shortened.

これらのことより、消費電力の増大が抑制されるとともに衣類のシワが低減できることに加えて、本発明によれば、洗濯中は、可動体１６を閉じた状態にすることで、洗濯工程において多量に発生した洗浄泡などが給気口９から循環風路１１内に流入するのを防止することができる。   As a result, the increase in power consumption can be suppressed and the wrinkles of clothing can be reduced. In addition, according to the present invention, the movable body 16 is closed during washing so that a large amount can be obtained in the washing process. It is possible to prevent the cleaning bubbles generated in the air from flowing into the circulation air passage 11 from the air supply port 9.

除湿手段１３は、空気冷却ファンや水冷熱交換器、加熱手段１４は電気ヒータ、送風手段１２は管路抵抗があっても多量の風を送風できる高圧タイプの電動送風機、などを使用する。また、ヒートポンプを用いてその蒸発器に併設した吸熱側熱交換器を除湿手段１３とし、その凝縮器に併設した放熱側熱交換器を加熱手段１４として使用してもよい。   The dehumidifying means 13 uses an air cooling fan or a water-cooled heat exchanger, the heating means 14 uses an electric heater, and the blower means 12 uses a high-pressure type electric blower that can blow a large amount of wind even if there is duct resistance. Further, the heat absorption side heat exchanger provided in the evaporator using a heat pump may be used as the dehumidifying means 13, and the heat radiation side heat exchanger provided in the condenser may be used as the heating means 14.

なお、循環風路１１を流れる乾燥用空気の循環方向は、図１と逆の方向としてもよく、水槽３の側周面に給気口を、背面に排気口に設ける構成となる。この場合、衣類からの水分を含んだ空気は、背面の排気口から循環風路１１に流入し、除湿手段１３で水分が除去されたのち加熱手段１４で加熱され、除湿された温風が送風機１２によって、側周面の給気口から回転ドラム４内に吐出される流れとなる。   The circulation direction of the drying air flowing through the circulation air passage 11 may be opposite to that in FIG. 1, and the air supply port is provided on the side peripheral surface of the water tank 3 and the exhaust port is provided on the back surface. In this case, the air containing moisture from the clothing flows into the circulation air passage 11 from the exhaust port on the back, and after the moisture is removed by the dehumidifying means 13, it is heated by the heating means 14, and the dehumidified warm air is blown by the blower. 12, the flow is discharged into the rotary drum 4 from the air supply port on the side peripheral surface.

図９は、空気通過断面積可変手段１５および送風機１２の他の例の動作を示すタイムチャートである。乾燥運転を開始してから第１の所定時間Ｔ１経過後、送風機１２を第２の回転数に増加させるとともに、循環風路１１を第２の断面積に切り替えて第２の所定時間Ｔ２経過後、第３の所定時間Ｔ３第１の断面積で第１の回転数により回転させて乾燥運転を終了するようにしたものである。送風機１２の回転数の増加と、可動体１６の回転または移動による空気通過断面積の減少は、ここでは第２の所定時間Ｔ２だけおこなわれ、その後は再び、送風機１２の回転数の減少と、可動体１６の回転または移動による空気通過断面積の増大を第３の所定時間Ｔ３おこなって乾燥が終了する。   FIG. 9 is a time chart showing the operation of another example of the air passage cross-sectional area varying means 15 and the blower 12. After the first predetermined time T1 has elapsed from the start of the drying operation, the blower 12 is increased to the second rotational speed, and the circulation air passage 11 is switched to the second cross-sectional area and after the second predetermined time T2 has elapsed. The third predetermined time T3 is rotated at the first rotational speed at the first cross-sectional area to end the drying operation. The increase in the rotational speed of the blower 12 and the decrease in the air passage cross-sectional area due to the rotation or movement of the movable body 16 are performed here for the second predetermined time T2, and then the rotational speed of the blower 12 is decreased again. The air passage cross-sectional area is increased by the rotation or movement of the movable body 16 for a third predetermined time T3, and the drying is completed.

これにより、乾燥の終了前は、衣類にシワが固着しにくいので、送風機１２の回転数を減少させ、空気通過断面積を増大させて乾燥させることで、シワ固着の少ない状態で衣類を乾燥させることができるとともに、送風機１２の電力消費を少なくすることができる。   As a result, wrinkles are less likely to adhere to the garment before the drying is finished, so the garment is dried with less wrinkle adhesion by decreasing the rotational speed of the blower 12 and increasing the air passage cross-sectional area for drying. In addition, the power consumption of the blower 12 can be reduced.

なお、第１の所定時間Ｔ１は、タイマーによる乾燥開始からの経過時間や、衣類の乾燥状態を検知する目的で循環風路１１などに配置した温度センサ（図示せず）などの乾燥度検知手段、あるいは、布量検知手段２０などで決められる。   The first predetermined time T1 is a dryness detection means such as a temperature sensor (not shown) disposed in the circulation air passage 11 or the like for the purpose of detecting the elapsed time from the start of drying by a timer or the dry state of clothes. Alternatively, it is determined by the cloth amount detection means 20 or the like.

布量検知手段２０は、衣類を収容した回転ドラム４を短時間回転させて、布量に関する電気信号（布量検出手段の検出信号）を得る例を、モータ電流で説明する。洗濯開始前にドラム駆動モータ７を作動させて、衣類を収容した回転ドラム４を短時間回転させると、加速に起因するモータ電流（加速電流と称す）が発生する。また、ドラム駆動モータ７の作動を止めると減速に起因するモータ電流（減速電流と称す）が発生する。   An example in which the cloth amount detecting means 20 rotates the rotating drum 4 containing the clothing for a short time to obtain an electric signal related to the cloth amount (detection signal of the cloth amount detecting means) will be described with a motor current. When the drum driving motor 7 is operated before the start of washing to rotate the rotating drum 4 containing the clothing for a short time, a motor current (referred to as acceleration current) resulting from acceleration is generated. When the operation of the drum drive motor 7 is stopped, a motor current (referred to as a deceleration current) resulting from deceleration is generated.

この加速電流と減速電流の合計である合計電流は、布量に比例するので、この合計電流を検出すると布量が判明する。また、これ以外に、回転ドラム４を短時間正逆回転させた際のモータ電流（または電力）と、回転ドラム４の回転停止時の慣性で回る惰性回転角度との両方から、布量を検知する方法もあり、布量が多いとモータ電流が多いうえに惰性回転角度が小さく、布量が少ないとモータ電流が少ないうえに惰性回転角度が大きい特性を利用している。   Since the total current, which is the sum of the acceleration current and the deceleration current, is proportional to the amount of cloth, the amount of cloth can be determined by detecting this total current. In addition to this, the amount of cloth is detected from both the motor current (or electric power) when the rotating drum 4 is rotated forward and backward for a short time and the inertial rotation angle that rotates with the inertia when the rotation of the rotating drum 4 stops. There is also a method of using a characteristic that when the amount of cloth is large, the motor current is large and the inertia rotation angle is small, and when the cloth amount is small, the motor current is small and the inertia rotation angle is large.

（実施の形態２）
図１０は、本発明の実施の形態２の空気通過断面積可変手段の構成を示す断面図である。空気通過断面積可変手段１５は、可動板１６を循環風路１１に対して矢印ハ方向に可動して進退自在に構成してあり、複数の小孔１９を設けている。他の構成は、実施の形態１と同じであるため説明を省略する。 (Embodiment 2)
FIG. 10 is a cross-sectional view showing the configuration of the air passage cross-sectional area varying means according to Embodiment 2 of the present invention. The air passage cross-sectional area varying means 15 is configured to move forward and backward by moving the movable plate 16 in the direction of the arrow C with respect to the circulating air passage 11, and is provided with a plurality of small holes 19. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

乾燥運転を開始からの第１の所定時間Ｔ１が経過するまでは、循環風路１１を通過する乾燥用空気の通過断面積が大きくなるように、制御手段８によって空気通過断面積可変手段１５の可動体１６が、可動体駆動手段１７に取り付けられたギヤ２１等を介してガイド部２２を摺動して、循環風路１１を開放状態とする（ａ）位置とし、第１の断面積に設定するとともに送風機１２を第１の回転数で回転させる。   Until the first predetermined time T1 from the start of the drying operation elapses, the control means 8 controls the air passage cross-sectional area variable means 15 so that the passage cross-sectional area of the drying air passing through the circulation air passage 11 is increased. The movable body 16 slides on the guide portion 22 via the gear 21 or the like attached to the movable body driving means 17 so that the circulating air passage 11 is in the open state (a), and the first sectional area is reached. While setting, the blower 12 is rotated at the first rotation speed.

そして、第１の所定時間Ｔ１経過後は、可動体駆動手段１７により可動体１６はガイド部２２を摺動して循環風路１２内に進入し、送風方向イと略直交状態となる（ｂ）位置へ
と変位させて乾燥用空気が小孔１９を通過するようにする。可動体１６は、循環風路１１に設けたガイド部２２の受部２２ａで支持されるようにしているので、送風機１２から大風量の風が可動体１６を押圧しても受部２２ａで支持されて、送風方向イと略直交状態となる（ｂ）位置に保持することができるようにしている。したがって、循環風路１１は第１の断面積より少ない第２の断面積に設定するとともに送風機１２を第１の回転数より多い第２の回転数で回転させる。 Then, after the first predetermined time T1 has elapsed, the movable body 16 slides on the guide portion 22 by the movable body driving means 17 and enters the circulating air passage 12, and is in a state substantially orthogonal to the air blowing direction (b). ) To the position so that the drying air passes through the small holes 19. Since the movable body 16 is supported by the receiving portion 22a of the guide portion 22 provided in the circulation air passage 11, the movable body 16 is supported by the receiving portion 22a even if a large amount of wind presses the movable body 16 from the blower 12. Thus, it can be held at the position (b) that is substantially orthogonal to the blowing direction (a). Accordingly, the circulation air passage 11 is set to a second cross-sectional area that is smaller than the first cross-sectional area, and the blower 12 is rotated at a second rotational speed that is greater than the first rotational speed.

したがって、衣類のシワ固着が少ない乾燥序盤（乾燥運転を開始してから第１の所定時間Ｔ１経過するまで）は、空気通過断面積を大きくしているので、大風量の風を送風機１２の少ない第１の回転数で得ることができ、乾燥時間の短縮と、送風機１２の消費電力が低減できる。そして、乾燥中盤以降（第１の所定時間Ｔ１経過後）は、空気通過断面積を第１の断面積より小さい第２の断面積とし、送風機１２を第１の回転数より大きな第２の回転数で回転させるので、風速を速めた温風が衣類に送風され、衣類に固着するシワを低減し、同時に、大電力を用いて送風機１２を大きな回転数で回転させるので、大風量の風が得られるとともに、大電力運転で発生した熱が温風に付与されるので温風温度が上昇し、乾燥時間の短縮が図れ、乾燥終了後の衣類のシワを効果的に低減することができる。   Therefore, since the air passage cross-sectional area is increased in the early drying stage (from the start of the drying operation until the first predetermined time T1 elapses) when the clothes are less wrinkled, the large amount of wind is less in the blower 12. It can be obtained at the first rotational speed, and the drying time can be shortened and the power consumption of the blower 12 can be reduced. Then, after the middle of drying (after the first predetermined time T1 has elapsed), the air passage cross-sectional area is set to a second cross-sectional area smaller than the first cross-sectional area, and the blower 12 is rotated at a second speed higher than the first rotational speed. Since the warm air with the increased wind speed is blown to the garment, the wrinkles adhering to the garment are reduced, and at the same time, the blower 12 is rotated at a large rotational speed using a large electric power. As well as being obtained, the heat generated by the high-power operation is applied to the warm air, so that the temperature of the warm air rises, the drying time can be shortened, and the wrinkles of the clothes after the drying can be effectively reduced.

（実施の形態３）
図１１は、本発明の実施の形態３の空気通過断面積可変手段の構成を示す側面図である。空気通過断面積可変手段１５の可動体１６は、循環風路１１内の偏った位置に設けた回転軸１８を中心に回動自在に設けて可動体駆動手段１７で駆動され、乾燥用空気の送風方向イと略平行状態となる（ａ）位置と、送風方向イと略直交状態となる（ｂ）位置とに切り替えられ、制御手段８により制御される。可動体１６が送風方向イと略直交状態となる（ｂ）位置にあるときは、乾燥用空気が通過する循環風路１１の断面積が少なくなるように、可動体１６の端部１６ｂと循環風路１１の内壁との間に間隙２３を設けている。可動体１６の動作とその位置（ａ）（ｂ）等、他の構成は、実施の形態１と同じであるため説明を省略する。 (Embodiment 3)
FIG. 11 is a side view showing the configuration of the air passage cross-sectional area varying means according to Embodiment 3 of the present invention. The movable body 16 of the air passage cross-sectional area varying means 15 is driven by the movable body driving means 17 so as to be rotatable about a rotating shaft 18 provided at a biased position in the circulation air passage 11, and is used for drying air. The position is switched between a position (a) that is substantially parallel to the air blowing direction (a) and a position (b) that is substantially orthogonal to the air blowing direction (a). When the movable body 16 is in the position (b) in which the movable body 16 is substantially orthogonal to the air blowing direction (b), it circulates with the end 16b of the movable body 16 so that the cross-sectional area of the circulation air passage 11 through which the drying air passes is reduced. A gap 23 is provided between the inner wall of the air passage 11. Since other configurations such as the operation of the movable body 16 and the positions (a) and (b) thereof are the same as those in the first embodiment, description thereof will be omitted.

乾燥運転を開始してから第１の所定時間が経過するまでは、実施の形態１と同様に、循環風路１１を通過する乾燥用空気の通過断面積が大きくなるように、制御手段８によって空気通過断面積可変手段１５の可動体１６が、可動体駆動手段１７で駆動されて乾燥用空気の送風方向イと略平行状態となる（ａ）位置とし、第１の断面積に設定するとともに送風機１２を第１の回転数で回転させる。そして、第１の所定時間Ｔ１経過後は、可動体１６を送風方向イと略直交状態となる（ｂ）位置へと変位させて乾燥用空気が間隙２３を通過するようにする。   From the start of the drying operation until the first predetermined time elapses, as in the first embodiment, the control means 8 causes the passage cross-sectional area of the drying air passing through the circulation air passage 11 to increase. The movable body 16 of the air passage cross-sectional area varying means 15 is set to the position (a) where the movable body driving means 17 is driven by the movable body driving means 17 to be in a state substantially parallel to the blowing direction of drying air (a), and is set to the first sectional area The blower 12 is rotated at the first rotation speed. Then, after the first predetermined time T1 has elapsed, the movable body 16 is displaced to the position (b) in which the movable body 16 is substantially orthogonal to the air blowing direction a so that the drying air passes through the gap 23.

可動体１６の先端部１６ａは、循環風路１１に設けた受部１１ａで支持されるようにしているので、送風機１２から大風量の風が可動体１６を押圧しても受部１１ａで支持されて、送風方向イと略直交状態となる（ｂ）位置に保持することができるようにしている。したがって、循環風路１１は第１の断面積より少ない第２の断面積に設定するとともに送風機１２を第１の回転数より多い第２の回転数で回転させる。これにより、前記実施の形態１、２と同様の作用効果が得られるものである。   Since the distal end portion 16a of the movable body 16 is supported by the receiving portion 11a provided in the circulation air passage 11, it is supported by the receiving portion 11a even if a large amount of wind presses the movable body 16 from the blower 12. Thus, it can be held at the position (b) that is substantially orthogonal to the blowing direction (a). Accordingly, the circulation air passage 11 is set to a second cross-sectional area that is smaller than the first cross-sectional area, and the blower 12 is rotated at a second rotational speed that is greater than the first rotational speed. Thereby, the same effects as those of the first and second embodiments can be obtained.

以上のように、本発明にかかる洗濯乾燥機は、少ない消費電力で衣類のシワを効果的に低減することができるので、衣類乾燥機および洗濯乾燥機として有用である。   As described above, the washing / drying machine according to the present invention can effectively reduce wrinkles of clothes with low power consumption, and thus is useful as a clothes drying machine and a washing / drying machine.

本発明の実施の形態１の洗濯乾燥機の構成図Configuration diagram of the washer-dryer according to Embodiment 1 of the present invention 同洗濯乾燥機の空気通過断面積可変手段の断面図Sectional view of air passage cross-sectional area variable means of the washing and drying machine 同洗濯乾燥機の空気通過断面積可変手段の側面図Side view of air passage cross-sectional area variable means of the washing and drying machine 同洗濯乾燥機の動作を示すタイムチャートTime chart showing the operation of the washer / dryer 同洗濯乾燥機の送風機の消費電力と回転数の関係を示す特性図Characteristic diagram showing the relationship between the power consumption and the rotational speed of the blower of the washer / dryer 同洗濯乾燥機の送風機の消費電力と送風量の関係を示す特性図Characteristic diagram showing the relationship between the power consumption of the blower of the washer / dryer and the amount of blown air 同洗濯乾燥機の送風機の回転数と送風量の関係を示す特性図Characteristic diagram showing the relationship between the rotational speed of the blower of the washer / dryer and the air flow rate 同洗濯乾燥機の送風機の回転数と風速の関係を示す特性図Characteristic diagram showing the relationship between the rotation speed of the blower and the wind speed of the washer / dryer 同洗濯乾燥機の他の例の動作を示すタイムチャートTime chart showing the operation of another example of the washer / dryer 本発明の実施の形態２の洗濯乾燥機の空気通過断面積可変手段の断面図Sectional drawing of the air passage sectional area variable means of the washing / drying machine of Embodiment 2 of this invention 本発明の実施の形態３の洗濯乾燥機の空気通過断面積可変手段の側面図Side view of the air passage cross-sectional area variable means of the washing and drying machine of Embodiment 3 of the present invention

符号の説明Explanation of symbols

１ 筐体
３ 水槽
４ 回転ドラム
７ ドラム駆動モータ
８ 制御手段
９ 給気口
１０ 排気口
１１ 循環風路
１２ 送風機
１３ 除湿手段
１４ 加熱手段
１５ 空気通過断面積可変手段
１６ 可動体
１７ 可動体駆動手段 DESCRIPTION OF SYMBOLS 1 Case 3 Water tank 4 Rotating drum 7 Drum drive motor 8 Control means 9 Air supply port 10 Exhaust port 11 Circulation air path 12 Blower 13 Dehumidification means 14 Heating means 15 Air passage cross-sectional area variable means 16 Movable body 17 Movable body drive means

Claims (8)

洗濯物を収容する回転ドラムと、前記回転ドラムを内装した筐体と、前記回転ドラムを内包し前記筐体内に支持された水槽と、前記水槽の背面に設け前記回転ドラムの回転軸を水平または前上がりに傾斜して回転させるドラム駆動モータと、前記水槽の背面および周側面に開口した給気口および排気口と、一端が前記排気口に接続され他端が前記給気口に接続された乾燥用空気の循環風路と、前記回転ドラム内と前記循環風路に乾燥用空気を送風する送風機と、前記回転ドラム内に収容した洗濯物から水分を奪った乾燥用空気を除湿する除湿手段と、前記除湿手段により除湿した乾燥用空気を加熱する加熱手段と、乾燥用空気が通過する前記循環風路の断面積を可変する空気通過断面積可変手段と、前記送風機と前記空気通過断面積可変手段を制御する制御手段とを備え、前記制御手段は、乾燥運転を開始してから第１の所定時間が経過するまで前記空気通過断面積可変手段により前記循環風路を第１の断面積に設定するとともに前記送風機を第１の回転数で回転させ、第１の所定時間経過後は、前記空気通過断面積可変手段により前記循環風路を第１の断面積より少ない第２の断面積に設定するとともに前記送風機を第１の回転数より多い第２の回転数で回転させるようにした洗濯乾燥機。 A rotating drum for storing laundry; a housing that houses the rotating drum; a water tank that includes the rotating drum and is supported in the housing; A drum drive motor that is tilted forward and rotated, an air supply port and an exhaust port that are open on the back surface and peripheral side surface of the water tank, one end connected to the exhaust port, and the other end connected to the air supply port A circulation air passage for drying air, a blower for blowing drying air in the rotary drum and the circulation air passage, and a dehumidifying means for dehumidifying the drying air deprived of moisture from the laundry stored in the rotation drum Heating means for heating the drying air dehumidified by the dehumidifying means, air passage cross-sectional area varying means for varying the cross-sectional area of the circulation air passage through which the drying air passes, the blower and the air passage cross-sectional area Variable means Control means for controlling, and the control means sets the circulation air passage to the first cross-sectional area by the air passage cross-sectional area variable means until the first predetermined time elapses after the drying operation is started. At the same time, the blower is rotated at a first rotational speed, and after the first predetermined time has elapsed, the circulating air passage is set to a second sectional area smaller than the first sectional area by the air passage sectional area variable means. In addition, a washing and drying machine in which the blower is rotated at a second rotational speed greater than the first rotational speed. 空気通過断面積可変手段は、循環風路内に可動自在に設けた可動体と、前記可動体を駆動する可動体駆動手段を有する構成とした請求項１記載の洗濯乾燥機。 The washing / drying machine according to claim 1, wherein the air passage cross-sectional area varying means includes a movable body movably provided in the circulation air passage and a movable body driving means for driving the movable body. 空気通過断面積可変手段は、循環風路内に可動体を回動自在に設け、前記可動体は、乾燥運転を開始してから第１の所定時間が経過するまで乾燥用空気の送風方向と略平行状態に位置させて第１の断面積に設定するとともに、第１の所定時間経過後は、乾燥用空気の送風方向と略直交状態に変位させて第２の断面積に設定するようにした請求項１または２記載の洗濯乾燥機。 The air passage cross-sectional area changing means is provided with a movable body rotatably in the circulation air passage, and the movable body has a blowing direction of the drying air until a first predetermined time has elapsed since the start of the drying operation. The first cross-sectional area is set in a substantially parallel state, and after the first predetermined time has elapsed, the second cross-sectional area is set by being displaced in a state substantially orthogonal to the blowing direction of the drying air. The washing / drying machine according to claim 1 or 2. 空気通過断面積可変手段は、循環風路に対して可動体を進退自在に設け、前記可動体は、乾燥運転を開始してから第１の所定時間が経過するまで前記循環風路外に位置させて第１の断面積に設定するとともに、第１の所定時間経過後は、前記循環風路内に位置させて第２の断面積に設定するようにした請求項１または２記載の洗濯乾燥機。 The air passage cross-sectional area varying means is provided so that a movable body can be moved forward and backward with respect to the circulation air passage, and the movable body is located outside the circulation air passage until a first predetermined time elapses after starting the drying operation. The laundry drying according to claim 1, wherein the first cross-sectional area is set and the second cross-sectional area is set in the circulation air passage after the first predetermined time has elapsed. Machine. 空気通過断面積可変手段は、可動体に多数の***を設けて第２の断面積に設定するようにした請求項２〜４のいずれか１項に記載の洗濯乾燥機。 The washing / drying machine according to any one of claims 2 to 4, wherein the air passage cross-sectional area varying means is set to a second cross-sectional area by providing a plurality of small holes in the movable body. 空気通過断面積可変手段は、循環風路と可動体との間に隙間を設けて第２の断面積に設定するようにした請求項２〜４のいずれか１項に記載の洗濯乾燥機。 The washing / drying machine according to any one of claims 2 to 4, wherein the air passage cross-sectional area varying means is set to a second cross-sectional area by providing a gap between the circulation air passage and the movable body. 洗濯物の量を検知する布量検知手段を設け、制御手段は、前記布量検知手段により検知した布量に基いて第１の所定時間を設定するようにした請求項１〜６のいずれか１項に記載の洗濯乾燥機。 The cloth amount detecting means for detecting the amount of laundry is provided, and the control means sets the first predetermined time based on the cloth amount detected by the cloth amount detecting means. The washing dryer according to item 1. 制御手段は、空気通過断面積可変手段により循環風路を第２の断面積に設定するとともに送風機を第２の回転数で回転させて第２の所定時間経過後、第３の所定時間第１の断面積で第１の回転数により回転させて乾燥運転を終了するようにした請求項１〜７のいずれか１項に記載の洗濯乾燥機。 The control means sets the circulation air passage to the second cross-sectional area by the air passage cross-sectional area varying means, rotates the blower at the second rotational speed, and after the elapse of the second predetermined time, the first time for the third predetermined time. The washing / drying machine according to any one of claims 1 to 7, wherein the drying operation is terminated by rotating at a first rotational speed with a cross-sectional area of.
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