JPH0739694A - Drum type washing and drying machine - Google Patents

Abstract

PURPOSE:To provide a high-reliability drum type washing/drying machine which improves which improves the temperature detection degree of a thermistor for detecting the drying end of a drying process. CONSTITUTION:A first thermistor 41 for detecting the end of drying is fitted on the outer wall of a heat exchanger 39 for dehumidifying high-humidity hot air, the first thermistor 41 is fitted at a position faces to a suction port 43 of the heat exchanger 39, and a shield panel 44 is fitted to the suction port 43. The hot air passed through the shield panel 43 generates an air curtain so as not to stick water on the inner wall face of the heat exchanger 39 to which the first thermistor 41 is fitted. The air curtain prevents the first thermistor 41 from detecting temperature lower than real one due to sticking water drops.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は一般家庭で用いられ、衣
類の洗浄をドラム内の転動によって行なうとともに、脱
水をドラムの高速回転によって行ない、さらに温風を転
動するドラム内の衣類にあて、熱交換器によって除湿を
行い衣類を乾燥させるドラム式洗濯乾燥機に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in general households, in which clothes are washed by rolling in a drum, and dehydration is performed by high speed rotation of the drum. The present invention relates to a drum type washer / dryer which dehumidifies with a heat exchanger to dry clothes.

【０００２】[0002]

【従来の技術】従来のドラム式洗濯乾燥機は図６に示す
ような構成であった。すなわち本体１と、この本体１内
にバネ２によって支持された水槽３と、前面を開口し後
面に回転軸４を備えたドラム５と、この回転軸４を軸支
するため水槽３の後面に設けられた軸受け６を備えてい
る。また回転軸４端部には洗濯モータ７とベルト８によ
って連動したプーリ９が取り付けられている。１０はダ
クト１１に取り付けられたサーミスタで、温風の温度を
検出している。１２はサーミスタ１０の温度を検知し適
切な熱風温度にするための制御部である。１３は送風用
の送風ファンで、ダクト１１、ヒータ１４、水槽３、熱
交換器１５、冷却水ノズル１６によって一連の温風循環
経路を構成している。また前記水槽３前面には本体１と
の間に水密性を確保するベローズ１７を設け、テーパ状
の蓋１８と嵌合するようになっている。そして水槽３と
本体１との間にはダンパー１９が取り付けてある。2. Description of the Related Art A conventional drum type washer / dryer has a structure as shown in FIG. That is, the main body 1, a water tank 3 supported by a spring 2 in the main body 1, a drum 5 having a front surface opened and a rotary shaft 4 on the rear surface, and a rear surface of the water tank 3 for pivotally supporting the rotary shaft 4. The bearing 6 provided is provided. Further, a pulley 9 which is interlocked with a washing motor 7 and a belt 8 is attached to the end of the rotary shaft 4. Reference numeral 10 denotes a thermistor attached to the duct 11, which detects the temperature of warm air. Reference numeral 12 is a control unit for detecting the temperature of the thermistor 10 and setting it to an appropriate hot air temperature. Reference numeral 13 denotes a blower fan for blowing air, and the duct 11, the heater 14, the water tank 3, the heat exchanger 15, and the cooling water nozzle 16 constitute a series of hot air circulation paths. Further, a bellows 17 for ensuring water tightness is provided between the front surface of the water tank 3 and the main body 1, and is fitted with a tapered lid 18. A damper 19 is attached between the water tank 3 and the main body 1.

【０００３】[0003]

【発明が解決しようとする課題】このような構成におい
て、洗濯、すすぎ、脱水を終えて乾燥行程にはいると、
湿気を含んだ温風は温風循環経路内を流れるが、この温
風は熱交換器１５内で、冷却水ノズル１６によって供給
された水と直接接触し冷却され除湿される。この種の洗
濯乾燥機は従来機械式のタイマーによって乾燥時間を設
定しており、一部電極によって乾燥検知を行うものもあ
ったが、その検知精度が悪く、過乾燥や乾燥不足等の問
題を引き起こしていた。With such a structure, when washing, rinsing and dehydration are finished and the drying process is started,
The hot air containing moisture flows in the hot air circulation path, and the hot air is directly contacted with the water supplied by the cooling water nozzle 16 in the heat exchanger 15 to be cooled and dehumidified. Conventionally, this type of washer / dryer has set a drying time by a mechanical timer, and some electrodes detect drying by some electrodes, but the detection accuracy is poor and problems such as overdrying and underdrying occur. Was causing it.

【０００４】本発明は上記課題を解決するものであり、
簡単な構成で水滴等の悪影響の無い正確な温度検知を行
う第１の乾燥検知センサーを実現し、乾きむらや未乾燥
の無いドラム式洗濯乾燥機を提供することを第一の目的
とする。The present invention is intended to solve the above problems,
A first object of the present invention is to provide a drum type washer / dryer having a simple structure, which realizes a first dryness detection sensor that accurately detects temperature without adverse effects such as water drops, and has no unevenness in drying or undriedness.

【０００５】また本発明は、簡単な構成で冷却水の温度
変化を検知する第２の乾燥検知センサーを実現し、これ
によって衣類の乾燥状態を正確に把握し、乾きむらや未
乾燥の無いドラム式洗濯乾燥機を提供することを第二の
目的とする。Further, the present invention realizes a second dryness detecting sensor for detecting a temperature change of cooling water with a simple structure, thereby accurately grasping a dry state of clothes, and a drum type without unevenness of dryness and undriedness. A second object is to provide a washer / dryer.

【０００６】さらにまた本発明は、新規部品を使わず簡
単な構成で冷却水の温度変化を検知する第２の乾燥検知
センサーを実現し、これによって衣類の乾燥状態を正確
に把握し、乾きむらや未乾燥の無いドラム式洗濯乾燥機
を提供することを第三目の的とする。Furthermore, the present invention realizes a second dryness detection sensor for detecting the temperature change of the cooling water with a simple structure without using any new parts, whereby the dryness of the clothes can be accurately grasped, and the dryness unevenness It is a third object to provide a drum type washer / dryer that does not dry.

【０００７】[0007]

【課題を解決するための手段】上記第一の目的を達成す
るため本発明の第一の手段は、本体と、本体内にサスペ
ンションによって支持された水槽と、前記水槽内に回転
自在に配したドラムと、前記ドラムを回転させる駆動源
である洗濯モータと、前記水槽に取り付けられ前記ドラ
ムの開口部を開閉する蓋と、前記水槽とヒータと送風フ
ァン及び熱交換器とがダクトによって導通する熱風循環
経路と、熱交換器と導通し冷却水を供給する給水手段
と、前記熱風循環経路に取り付けられ、熱風温度を検出
する第１の乾燥検知センサーと、前記給水手段と熱交換
器、水槽によって構成される冷却水経路に取り付けら
れ、冷却水の温度を検出する第２の乾燥検知センサー
と、これらの乾燥検知センサーの温度を入力し、乾燥過
程での特徴的な温度変化を検出し乾燥終了を判断する乾
燥制御部とからなる乾燥検知手段とを備え、この第１の
乾燥検知センサーは前記水槽からの熱風の吸い込み側に
取り付けられた熱交換器の外壁に取り付けられ、この取
り付け位置は熱交換器の熱風吸い込み口と対向した面と
し、さらに吸い込み口に熱風の流路を制限する遮蔽部を
取り付けた構成とするものである。In order to achieve the above first object, the first means of the present invention is a main body, a water tank supported by a suspension in the main body, and rotatably arranged in the water tank. A drum, a washing motor that is a drive source for rotating the drum, a lid that is attached to the water tank and that opens and closes the opening of the drum, and hot air in which the water tank, the heater, the blower fan, and the heat exchanger are conducted by a duct. A circulation path, a water supply means which is in communication with the heat exchanger and supplies cooling water, a first drying detection sensor which is attached to the hot air circulation path and detects a hot air temperature, the water supply means, the heat exchanger, and the water tank. A second dryness detection sensor that is attached to the configured cooling water path and that detects the temperature of the cooling water, and the temperature of these dryness detection sensors are input, and a characteristic temperature change during the drying process A first drying detection sensor that is attached to the outer wall of the heat exchanger that is attached to the suction side of the hot air from the water tank. The mounting position is on the surface facing the hot air intake port of the heat exchanger, and a shield portion for restricting the hot air flow path is attached to the intake port.

【０００８】さらに上記第二の目的を達成するため本発
明の第２の手段は、本体と、本体内にサスペンションに
よって支持された水槽と、前記水槽内に回転自在に配し
たドラムと、前記ドラムを回転させる駆動源である洗濯
モータと、前記水槽に取り付けられ前記ドラムの開口部
を開閉する蓋と、前記水槽とヒータと送風ファン及び熱
交換器とがダクトによって導通する熱風循環経路と、熱
交換器と導通し冷却水を供給する給水手段と、前記熱風
循環経路に取り付けられ、熱風温度を検出する第１の乾
燥検知センサーと、前記給水手段と熱交換器、水槽によ
って構成される冷却水経路に取り付けられ、冷却水の温
度を検出する第２の乾燥検知センサーと、これらの乾燥
検知センサーの温度を入力し、乾燥過程での特徴的な温
度変化を検出し乾燥終了を判断する乾燥制御部とからな
る乾燥検知手段とを備え、この第２の乾燥検知センサー
は前記熱交換器に設けた前記給水手段により給水された
冷却水をためるトラップ内に取り付けた構成とするもの
である。Further, in order to achieve the above second object, the second means of the present invention is a main body, a water tank supported by a suspension in the main body, a drum rotatably arranged in the water tank, and the drum. A washing motor that is a drive source for rotating, a lid that is attached to the water tank and that opens and closes the opening of the drum, a hot air circulation path through which the water tank, the heater, the blower fan, and the heat exchanger are connected by a duct, A water supply means that is connected to the exchanger to supply cooling water, a first drying detection sensor that is attached to the hot air circulation path and detects the hot air temperature, and a cooling water configured by the water supply means, a heat exchanger, and a water tank. A second dryness detection sensor that is attached to the path and detects the temperature of the cooling water and the temperature of these dryness detection sensors are input, and the characteristic temperature change in the drying process is detected and the dryness is detected. A second drying detection sensor comprising a drying control unit for determining the end, wherein the second drying detection sensor is installed in a trap for storing the cooling water supplied by the water supply unit provided in the heat exchanger; To do.

【０００９】さらに上記第三の目的を達成するため本発
明の第３の手段は、本体と、本体内にサスペンションに
よって支持された水槽と、前記水槽内に回転自在に配し
たドラムと、前記ドラムを回転させる駆動源である洗濯
モータと、前記水槽に取り付けられ前記ドラムの開口部
を開閉する蓋と、前記水槽とヒータと送風ファン及び熱
交換器とがダクトによって導通する熱風循環経路と、熱
交換器と導通し冷却水を供給する給水手段と、前記熱風
循環経路に取り付けられ、熱風温度を検出する第１の乾
燥検知センサーと、前記給水手段と熱交換器、水槽によ
って構成される冷却水経路に取り付けられ、冷却水の温
度を検出する第２の乾燥検知センサーと、これらの乾燥
検知センサーの温度を入力し、乾燥過程での特徴的な温
度変化を検出し乾燥終了を判断する乾燥制御部とからな
る乾燥検知手段とを備え、この第２の乾燥検知センサー
は前記水槽底面に設けられた穴にパッキンを介して挿入
され、このパッキンは水槽内部に面した部分を凹状にし
た構成とするものである。To achieve the third object, the third means of the present invention is to provide a main body, a water tank supported by a suspension in the main body, a drum rotatably arranged in the water tank, and the drum. A washing motor that is a drive source for rotating, a lid that is attached to the water tank and that opens and closes the opening of the drum, a hot air circulation path through which the water tank, the heater, the blower fan, and the heat exchanger are connected by a duct, A water supply means that is connected to the exchanger to supply cooling water, a first drying detection sensor that is attached to the hot air circulation path and detects the hot air temperature, and a cooling water configured by the water supply means, a heat exchanger, and a water tank. A second dryness detection sensor that is attached to the path and detects the temperature of the cooling water and the temperature of these dryness detection sensors are input, and the characteristic temperature change in the drying process is detected and the dryness is detected. A second drying detection sensor which is inserted through a packing into a hole provided in the bottom surface of the water tank, and the packing is a portion facing the inside of the water tank. Is a concave shape.

【００１０】[0010]

【作用】第一の手段のドラム式洗濯乾燥機は、洗濯、す
すぎ、脱水を終えて乾燥行程にはいると、湿気を含んだ
温風は熱交換器内で、冷却水ノズルによって供給された
水と直接接触し冷却され除湿される。一般に乾燥工程に
おける循環風温度は供給熱量が衣類の蒸発潜熱で奪わ
れ、熱的に平衡状態を保つ恒率乾燥期と、乾燥終了時に
衣類の乾燥と共に徐々に温度が上昇する減率乾燥期に分
けられる。さらに冷却水温度も恒率乾燥期では、一定の
熱量を含んだ循環風と平衡状態で熱交換を行うため一定
を保ち、減率乾燥期になると循環風内に含まれる水分量
が、衣類の乾燥と共に減少し冷却水との交換熱量も減少
し徐々に下がる。本発明では減率乾燥期に上昇する循環
風温度を第１の乾燥検知センサーで、徐々に温度が下が
っていく冷却水の温度を第２の乾燥検知センサーで検知
し、その差が所定の値となったときに乾燥終了と判断し
ている。循環風温度を検知する第１の乾燥検知センサー
は、水滴やリントの付着を避けるため熱交換器の外壁温
度で間接的に検知している。この時循環風によってはね
とばされた水滴は第１の乾燥検知センサーを外付けした
熱交換器壁面に付着しその面の温度を極端に下げるが、
第１の乾燥検知センサーと対向した吸い込み口の位置に
遮蔽板を取り付けることによって、遮蔽板の陰になる部
分の風速が緩くなると同時に、流線型の遮蔽板の周囲の
風速が速くなる。これによって第１の乾燥検知センサー
取付面の周囲に圧力差が生じエアーカーテンが形成さ
れ、水滴が直接検知面に衝突し難くなり、熱交換器壁面
温度を極端に下げることが無くなる。さらにこの遮蔽板
を流れに対して流線型にすることによって、圧力損失も
少なくなる。In the drum type washer / dryer of the first means, when washing, rinsing and dewatering are completed and the drying process is started, warm air containing moisture is supplied by the cooling water nozzle in the heat exchanger. It comes into direct contact with water and is cooled and dehumidified. Generally, the circulating air temperature in the drying process is divided into a constant rate drying period in which the amount of heat supplied is removed by the latent heat of vaporization of the clothes and a thermal equilibrium state is maintained, and a decreasing rate drying period in which the temperature gradually rises with the drying of the clothes at the end of drying. Be divided. Furthermore, the cooling water temperature is kept constant in the constant rate drying period because heat is exchanged in equilibrium with the circulating air containing a certain amount of heat, and during the rate decreasing period, the amount of water contained in the circulating air is It decreases with drying, and the amount of heat exchanged with cooling water also decreases and gradually decreases. In the present invention, the circulating air temperature rising in the rate-decreasing drying period is detected by the first drying detection sensor, and the temperature of the cooling water gradually decreasing is detected by the second drying detection sensor, and the difference is a predetermined value. When it becomes, it is judged that the drying is completed. The first dryness detection sensor that detects the temperature of the circulating air indirectly detects the temperature of the outer wall of the heat exchanger in order to avoid the adhesion of water droplets and lint. At this time, the water droplets splashed by the circulating wind adhere to the wall surface of the heat exchanger to which the first dryness detection sensor is externally attached, and the temperature of the surface is extremely lowered.
By installing the shield plate at the position of the suction port facing the first dryness detection sensor, the wind speed at the shaded part of the shield plate becomes slower and the wind speed around the streamlined shield plate becomes faster. As a result, a pressure difference is generated around the first dryness detection sensor mounting surface, an air curtain is formed, it becomes difficult for water droplets to directly collide with the detection surface, and the temperature of the heat exchanger wall surface is not lowered extremely. Further, by making this shield plate streamlined with respect to the flow, pressure loss is also reduced.

【００１１】また第二の手段のドラム式洗濯乾燥機は、
洗濯、すすぎ、脱水を終えて乾燥行程にはいると、湿気
を含んだ温風は熱交換器内で、冷却水ノズルによって供
給された水と直接接触し冷却され除湿される。この時の
循環風と冷却水の熱的な挙動および検知方式は第一の手
段で説明した通りである。ここで熱交換器内の冷却水通
路にトラップを設け、乾燥検知センサーを冷却水内に完
全に浸すことによって、水滴や外乱の影響の少ない正確
な温度検知を行うことができる。The drum type washer / dryer of the second means is
When washing, rinsing and dehydration are completed and the drying process is started, the hot air containing moisture is directly contacted with the water supplied by the cooling water nozzle in the heat exchanger to be cooled and dehumidified. The thermal behavior and detection method of the circulating air and cooling water at this time are as described in the first means. Here, by providing a trap in the cooling water passage in the heat exchanger and completely immersing the dryness detection sensor in the cooling water, it is possible to perform accurate temperature detection with less influence of water droplets and disturbance.

【００１２】さらに第三の手段のドラム式洗濯乾燥機
は、洗濯、すすぎ、脱水を終えて乾燥行程にはいると、
湿気を含んだ温風は熱交換器内で、冷却水ノズルによっ
て供給された水と直接接触し冷却され除湿される。この
時の循環風と冷却水の熱的な挙動および検知方式は第一
の手段で説明した通りである。ここで乾燥工程中に乾燥
検知センサーの取付パッキンに設けた凹部に、冷却水が
一定の水位で溜まり循環風と熱交換を行う。減率乾燥期
にはいると循環風の相対湿度が下がり、凹部の水温も徐
々に下がっていく。この水温の変化を検知することによ
って、簡単な構成で信頼性の高い乾燥終了検知を行うこ
とができる。Further, the drum type washer / dryer of the third means, after finishing washing, rinsing and dehydrating, enters the drying process,
In the heat exchanger, the hot air containing moisture is brought into direct contact with the water supplied by the cooling water nozzle to be cooled and dehumidified. The thermal behavior and detection method of the circulating air and cooling water at this time are as described in the first means. Here, during the drying process, the cooling water is accumulated at a constant water level in the recess provided in the packing for mounting the dryness detection sensor, and heat is exchanged with the circulating air. During the rate-decreasing dry season, the relative humidity of the circulating air decreases, and the water temperature in the recesses gradually decreases. By detecting this change in the water temperature, it is possible to detect the completion of drying with high reliability with a simple configuration.

【００１３】[0013]

【実施例】以下、第１の実施例を図面に基づいて説明す
る。図１、図２において、２０は本体２１に複数のサス
ペンション２２によって、半拘束的に吊り下げられた水
槽である。この水槽２０内には、回転軸２３によって軸
支され、適宜通水孔２４及び開口部２５を設けたドラム
２６が配されている。また前記水槽２０には軸受２７を
介して、ドラムプーリ２８が取り付けられており、この
ドラムプーリ２８と、洗濯モータ２９のシャフト３０に
取り付けられたモータプーリ３１との間にはベルト３２
が張り渡してある。３３は前記ドラム２６の衣類投入口
３４を開閉する外蓋であり、一端を水槽２０、他端を本
体２１に固定したベローズ３５と当接している。さらに
前記水槽２０下部と本体２１との間にはダンパー３６が
取り付けられている。３７は送風用の送風ファンで、ヒ
ータ３８、水槽２０、熱交換器３９と共にダクト４０を
介して一連の温風循環経路を構成している。４１は前記
熱交換器３９に取り付けられた循環風の温度検知用の第
１のサーミスタで、４２は乾燥制御部、４３は遮蔽板４
４を備えた熱風吸い込み口、４５は冷却水ノズルで、４
６は冷却水温検知用の第２のサーミスタである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 20 denotes a water tank that is suspended from a main body 21 by a plurality of suspensions 22 in a semi-constrained manner. In the water tank 20, a drum 26, which is supported by a rotary shaft 23 and is provided with a water passage 24 and an opening 25, is arranged. A drum pulley 28 is attached to the water tank 20 via a bearing 27, and a belt 32 is provided between the drum pulley 28 and a motor pulley 31 attached to a shaft 30 of a washing motor 29.
Is stretched over. Reference numeral 33 denotes an outer lid that opens and closes the clothes inlet 34 of the drum 26, one end of which is in contact with the bellows 35 fixed to the water tank 20 and the other end of which is fixed to the main body 21. Further, a damper 36 is attached between the lower portion of the water tank 20 and the main body 21. A blower fan 37 for blowing air constitutes a series of warm air circulation paths together with the heater 38, the water tank 20, and the heat exchanger 39 via the duct 40. Reference numeral 41 is a first thermistor for detecting the temperature of the circulating air attached to the heat exchanger 39, 42 is a drying control unit, and 43 is a shield plate 4.
4 is a hot air inlet, 45 is a cooling water nozzle, 4
6 is a second thermistor for detecting the cooling water temperature.

【００１４】以上の構成における動作を説明する。洗
濯、すすぎ、脱水を終えて乾燥行程にはいると、湿気を
含んだ温風は熱交換器３９内で、冷却水ノズル４５によ
って供給された水と直接接触し冷却され除湿される。一
般に乾燥工程における循環風温度は図３に示すように供
給熱量が衣類の蒸発潜熱で奪われ、熱的に平衡状態を保
つ恒率乾燥期と、乾燥終了時に衣類の乾燥と共に徐々に
温度が上昇する減率乾燥期に分けられる。さらに冷却水
は高温の循環風と接触しながら熱交換を行い、循環風の
温度（飽和蒸気圧）を下げ除湿を行う。この時乾燥開始
時点では循環風の温度上昇とともに冷却水の温度も上が
るが、恒率乾燥期にはいると循環風の温度（熱量）が一
定となるため、循環風から冷却水への供給熱量も一定と
なり平衡状態を保つ。この時の循環風は飽和蒸気の状態
であり、冷却水への熱量授受の媒体は循環風内の水分お
よび結露水となる。次に減率乾燥期になると循環風内に
含まれる水分量（相対湿度）が衣類の乾燥と共に減少
し、これによって冷却水との交換熱量（除湿量）が減少
し冷却水温度が徐々に下がる。このように本発明では減
率乾燥期に上昇する循環風温度と、徐々に温度が下がっ
ていく冷却水の温度をそれぞれ第１、第２のサーミスタ
で検知し、その差が所定の値となったときに乾燥終了と
判断している。循環風温度を検知する第１のサーミスタ
４１は、水滴やリントの付着を避けるため熱交換器３９
の外壁温度で間接的に検知しているが、この時循環風に
よってはねとばされた水滴が第１のサーミスタ４１を外
付けした熱交換器３９壁面に付着すると、その面の温度
を極端に下げ第２のサーミスタとの温度差が疑似的に所
定の値となり乾燥終了と誤検知してしまうことになる。
このことから第１のサーミスタ４１と対向した吸い込み
口４３の位置に遮蔽板４４を取り付けることによって、
遮蔽板４４の陰になる部分の風速が緩くなると同時に、
流線型の遮蔽板４４の周囲の風速が速くなる。これによ
って第１のサーミスタ４１取付面の周囲に圧力差が生じ
エアーカーテン４７が形成され、水滴が直接検知面に衝
突し難くなり、熱交換器３９壁面温度を極端に下げるこ
とが無くなる。さらにこの遮蔽板４４を流れに対して流
線型にすることによって、圧力損失も少なくなり誤検知
による未乾燥や乾きむらのない信頼性の高い乾燥検知を
行える。The operation of the above configuration will be described. When washing, rinsing and dehydration are completed and the drying process is started, the hot air containing moisture is directly contacted with the water supplied by the cooling water nozzle 45 in the heat exchanger 39 to be cooled and dehumidified. As shown in FIG. 3, the circulating air temperature in the drying process is generally a constant rate drying period in which the amount of heat supplied is lost by the latent heat of evaporation of clothes, and the temperature gradually rises with the drying of clothes at the end of drying. It is divided into the dry period. Further, the cooling water exchanges heat while coming into contact with the hot circulating air to lower the temperature of the circulating air (saturated vapor pressure) and dehumidify it. At this time, the temperature of the cooling air rises as the temperature of the circulating air rises at the start of drying, but since the temperature (heat quantity) of the circulating air becomes constant during the constant rate drying period, the amount of heat supplied from the circulating air to the cooling water Also becomes constant and maintains an equilibrium state. At this time, the circulating air is in the state of saturated steam, and the medium for exchanging the amount of heat to the cooling water is the moisture and the condensed water in the circulating air. Next, during the rate-decreasing dry period, the amount of water contained in the circulating air (relative humidity) decreases as the clothes dry, which reduces the amount of heat exchanged with the cooling water (dehumidification amount) and gradually lowers the cooling water temperature. . As described above, in the present invention, the circulating air temperature that rises during the rate-decreasing drying period and the cooling water temperature that gradually decreases are detected by the first and second thermistors, respectively, and the difference becomes a predetermined value. When it is dry, it is judged that the drying is completed. The first thermistor 41, which detects the circulating air temperature, uses the heat exchanger 39 to prevent water droplets and lint from adhering.
However, if water droplets splashed by the circulating air adhere to the wall surface of the heat exchanger 39 to which the first thermistor 41 is externally attached, the temperature of that surface is extremely detected. The temperature difference from the second thermistor becomes a pseudo predetermined value, and the end of drying is erroneously detected.
Therefore, by attaching the shield plate 44 to the position of the suction port 43 facing the first thermistor 41,
At the same time that the wind speed of the shaded part of the shielding plate 44 becomes slower,
The wind speed around the streamlined shield plate 44 increases. This causes a pressure difference around the mounting surface of the first thermistor 41 to form the air curtain 47, making it difficult for water droplets to directly collide with the detection surface and to prevent the wall temperature of the heat exchanger 39 from being extremely lowered. Further, by making the shielding plate 44 streamlined with respect to the flow, pressure loss is reduced, and highly reliable dry detection without undue or uneven dryness due to erroneous detection can be performed.

【００１５】次に第２の実施例を図４に基づいて説明す
る。この実施例においてドラム式洗濯乾燥機の全体構成
は図１と同様であるので説明を省略し、以下、相違点を
中心に説明する。第２のサーミスタ４６は前記熱交換器
３９に構成されたトラップ４９内に取り付けた構成とす
る。Next, a second embodiment will be described with reference to FIG. In this embodiment, the overall structure of the drum type washer / dryer is the same as that shown in FIG. 1, and therefore its explanation is omitted, and the differences will be mainly described below. The second thermistor 46 is installed in the trap 49 of the heat exchanger 39.

【００１６】以上の構成における動作を説明する。洗
濯、すすぎ、脱水を終えて乾燥行程にはいると、湿気を
含んだ温風は熱交換器３９内で、冷却水ノズル４３によ
って供給された水と直接接触し冷却され除湿される。こ
の時の熱的状態は図３と同じであるので説明を省略す
る。ここで第２のサーミスタ４６をトラップ４９の冷却
水内に完全に浸すことによって、冷却水の温度のみを正
確に検知でき、水滴や外乱の影響による誤検知の無い信
頼性の高い乾燥検知を行うことができる。The operation of the above configuration will be described. When washing, rinsing, and dehydration are completed and the drying process is started, the hot air containing moisture is directly contacted with the water supplied by the cooling water nozzle 43 in the heat exchanger 39 to be cooled and dehumidified. Since the thermal state at this time is the same as that in FIG. 3, description thereof will be omitted. Here, by completely immersing the second thermistor 46 in the cooling water of the trap 49, it is possible to accurately detect only the temperature of the cooling water, and perform highly reliable dry detection without erroneous detection due to the influence of water droplets or disturbance. be able to.

【００１７】次に第３の実施例を図５に基づいて説明す
る。この実施例においてドラム式洗濯機の全体構成は図
１と同様であるので説明を省略し、以下、相違点を中心
に説明する。第２のサーミスタ４６は前記水槽２０底面
に設けられた穴５０にパッキン５１を介して挿入され、
このパッキン５１の水槽２０内部に面した部分を凹状に
した構成とする。Next, a third embodiment will be described with reference to FIG. In this embodiment, the overall structure of the drum type washing machine is the same as that shown in FIG. 1, and therefore its explanation is omitted, and the difference will be mainly described below. The second thermistor 46 is inserted through a packing 51 into a hole 50 provided in the bottom surface of the water tank 20,
The portion of the packing 51 facing the inside of the water tank 20 is formed in a concave shape.

【００１８】以上の構成における動作を説明する。洗
濯、すすぎ、脱水を終えて乾燥行程にはいると、温風が
循環経路を循環する。この時の熱的状態は図３と同じで
あるので説明を省略する。ここで水槽２０底面の第２の
サーミスタ４６の取付パッキン５０に凹部５２を設ける
ことによって、乾燥行程でこの凹部５２に冷却水が一定
の水位で溜まる。このときの冷却水の循環風との熱交換
による温度変化を検知する事によって乾燥検知が行え
る。さらに洗濯時の湯温の設定用としても使え、低コス
トで簡単な構成で信頼性の高い乾燥終了検知を行うこと
ができる。The operation of the above configuration will be described. After finishing the washing, rinsing and dehydration and entering the drying process, warm air circulates in the circulation path. Since the thermal state at this time is the same as that in FIG. 3, description thereof will be omitted. By providing the recess 52 in the mounting packing 50 of the second thermistor 46 on the bottom surface of the water tank 20, the cooling water is accumulated at a constant water level in the recess 52 during the drying process. Drying can be detected by detecting a temperature change due to heat exchange with the circulating air of the cooling water at this time. Further, it can be used for setting the hot water temperature at the time of washing, and it is possible to detect the completion of drying with high reliability with a low cost and a simple configuration.

【００１９】[0019]

【発明の効果】上記実施例から明らかなように請求項１
の発明によれば、第１の乾燥検知センサーの取り付け位
置を熱交換器の熱風吸い込み口と対向した面とし、さら
に吸い込み口に熱風の流路を制限する遮蔽部を取り付け
ているので、温風によってはねとばされた水滴やリント
を遮蔽板で遮り、第１のサーミスタ取付面の周囲にエア
ーカーテンを形成し、水滴が直接検知面に衝突し難くな
り、熱交換器壁面温度を極端に下げることが無くなる。
さらにこの遮蔽板を流れに対して流線型にすることによ
って、圧力損失も少なくなる。これによって簡単な構成
で未乾燥や乾燥むらのない信頼性の高い乾燥検知を行う
ことができる。As is apparent from the above-mentioned embodiment, claim 1
According to the invention, since the mounting position of the first dryness detection sensor is the surface facing the hot air intake port of the heat exchanger, and the shielding part for restricting the flow path of the hot air is attached to the intake port, The splashed water droplets and lint are blocked by a shielding plate, and an air curtain is formed around the mounting surface of the first thermistor, making it difficult for water droplets to directly collide with the detection surface, thus making the heat exchanger wall surface temperature extremely extreme. There is no lowering.
Further, by making this shield plate streamlined with respect to the flow, pressure loss is also reduced. As a result, it is possible to perform highly reliable dry detection without drying or uneven drying with a simple configuration.

【００２０】また請求項２の発明によれば、熱交換器内
の冷却水通路にトラップを設け、第２のサーミスタを冷
却水内に完全に浸すことによって、水滴や外乱の影響の
少ない正確な乾燥検知を行うことができる。According to the second aspect of the present invention, a trap is provided in the cooling water passage in the heat exchanger, and the second thermistor is completely immersed in the cooling water. Drying detection can be performed.

【００２１】さらに請求項３の発明によれば、第２のサ
ーミスタの取付パッキンに凹部を設けているので、低コ
ストで簡単な構成で未乾燥や乾きむらのない信頼性の高
い乾燥検知を行うことができる。Further, according to the third aspect of the present invention, since the mounting packing of the second thermistor is provided with the concave portion, highly reliable dry detection can be performed with a low cost and a simple structure without unevenness or dryness. be able to.

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

【図１】本発明の第１の実施例を示すドラム式洗濯乾燥
機の縦断面図FIG. 1 is a vertical sectional view of a drum type washer / dryer showing a first embodiment of the present invention.

【図２】同ドラム式洗濯乾燥機の第１のサーミスタの取
り付け部分を示す縦断面図FIG. 2 is a longitudinal sectional view showing a mounting portion of a first thermistor of the drum type washer / dryer.

【図３】同第１、第２のサーミスタの温度変化を示す図FIG. 3 is a diagram showing temperature changes of the first and second thermistors.

【図４】本発明の第２の実施例における第２のサーミス
タの取り付け部分を示す縦断面図FIG. 4 is a longitudinal sectional view showing a mounting portion of a second thermistor in the second embodiment of the present invention.

【図５】本発明の第３の実施例における第２のサーミス
タの取り付け部分を示す縦断面図FIG. 5 is a vertical sectional view showing a mounting portion of a second thermistor in the third embodiment of the invention.

【図６】従来例におけるドラム式洗濯乾燥機の縦断面図FIG. 6 is a vertical cross-sectional view of a conventional drum type washer / dryer.

【符号の説明】[Explanation of symbols]

２０ 水槽 ２１ 本体 ２６ ドラム ３７ 送風ファン ３８ ヒータ ３９ 熱交換器 ４０ ダクト ４１ 第１のサーミスタ（第１の乾燥検知センサー） ４２ 乾燥制御部 ４４ 遮蔽板 ４５ 冷却水ノズル ４６ 第２のサーミスタ（第２の乾燥検知センサー） ４７ エアーカーテン ４９ トラップ ５１ パッキン ５２ 凹部 20 Water Tank 21 Main Body 26 Drum 37 Blower Fan 38 Heater 39 Heat Exchanger 40 Duct 41 First Thermistor (First Dryness Detection Sensor) 42 Drying Control Section 44 Shielding Plate 45 Cooling Water Nozzle 46 Second Thermistor (Secondary) Drying detection sensor) 47 Air curtain 49 Trap 51 Packing 52 Recess

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】本体と、本体内にサスペンションによって
支持された水槽と、前記水槽内に回転自在に配したドラ
ムと、前記ドラムを回転させる駆動源である洗濯モータ
と、前記水槽に取り付けられ前記ドラムの開口部を開閉
する蓋と、前記水槽とヒータと送風ファン及び熱交換器
とがダクトによって導通する熱風循環経路と、熱交換器
と導通し冷却水を供給する給水手段と、前記熱風循環経
路に取り付けられ、熱風温度を検出する第１の乾燥検知
センサーと、前記給水手段と熱交換器、水槽によって構
成される冷却水経路に取り付けられ、冷却水の温度を検
出する第２の乾燥検知センサーと、これらの乾燥検知セ
ンサーの温度を入力し、乾燥過程での特徴的な温度変化
を検出し乾燥終了を判断する乾燥制御部とからなる乾燥
検知手段とを備え、この第１の乾燥検知センサーは前記
水槽からの熱風の吸い込み側に取り付けられた熱交換器
の外壁に取り付けられ、この取り付け位置は熱交換器の
熱風吸い込み口と対向した面とし、さらに吸い込み口に
熱風の流路を制限する遮蔽部を取り付けたドラム式洗濯
乾燥機。1. A main body, a water tank supported by a suspension in the main body, a drum rotatably arranged in the water tank, a washing motor as a drive source for rotating the drum, and a water tank attached to the water tank. A lid that opens and closes the opening of the drum, a hot air circulation path through which the water tank, the heater, the blower fan, and the heat exchanger are connected by a duct, a water supply unit that is connected to the heat exchanger and supplies cooling water, and the hot air circulation. A first dryness detection sensor attached to the passage for detecting the temperature of hot air, and a second dryness detection attached to the cooling water passage constituted by the water supply means, the heat exchanger, and the water tank for detecting the temperature of the cooling water. It is equipped with a sensor and a dryness detection means including a dryness control unit that inputs the temperatures of these dryness detection sensors, detects a characteristic temperature change in the drying process, and determines the completion of drying. The first dryness detection sensor is attached to the outer wall of the heat exchanger attached to the side where the hot air from the water tank is sucked in, and this attachment position is located on the surface facing the hot air inlet of the heat exchanger. Drum type washer / dryer equipped with a shield that limits the flow path of hot air. 【請求項２】本体と、本体内にサスペンションによって
支持された水槽と、前記水槽内に回転自在に配したドラ
ムと、前記ドラムを回転させる駆動源である洗濯モータ
と、前記水槽に取り付けられ前記ドラムの開口部を開閉
する蓋と、前記水槽とヒータと送風ファン及び熱交換器
とがダクトによって導通する熱風循環経路と、熱交換器
と導通し冷却水を供給する給水手段と、前記熱風循環経
路に取り付けられ、熱風温度を検出する第１の乾燥検知
センサーと、前記給水手段と熱交換器、水槽によって構
成される冷却水経路に取り付けられ、冷却水の温度を検
出する第２の乾燥検知センサーと、これらの乾燥検知セ
ンサーの温度を入力し、乾燥過程での特徴的な温度変化
を検出し乾燥終了を判断する乾燥制御部とからなる乾燥
検知手段とを備え、この第２の乾燥検知センサーは前記
熱交換器に設けた前記給水手段により給水された冷却水
をためるトラップ内に取り付けられたドラム式洗乾燥濯
機。2. A main body, a water tank supported by a suspension in the main body, a drum rotatably arranged in the water tank, a washing motor as a drive source for rotating the drum, and a water tank attached to the water tank. A lid that opens and closes the opening of the drum, a hot air circulation path through which the water tank, the heater, the blower fan, and the heat exchanger are connected by a duct, a water supply unit that is connected to the heat exchanger and supplies cooling water, and the hot air circulation. A first dryness detection sensor attached to the passage for detecting the temperature of hot air, and a second dryness detection attached to the cooling water passage constituted by the water supply means, the heat exchanger, and the water tank for detecting the temperature of the cooling water. It is equipped with a sensor and a dryness detection means including a dryness control unit that inputs the temperatures of these dryness detection sensors, detects a characteristic temperature change in the drying process, and determines the completion of drying. The second drying detecting sensors water has been mounted in the trap to accumulate the cooling water drum type washing drying 濯機 by said water supply means provided in the heat exchanger. 【請求項３】本体と、本体内にサスペンションによって
支持された水槽と、前記水槽内に回転自在に配したドラ
ムと、前記ドラムを回転させる駆動源である洗濯モータ
と、前記水槽に取り付けられ前記ドラムの開口部を開閉
する蓋と、前記水槽とヒータと送風ファン及び熱交換器
とがダクトによって導通する熱風循環経路と、熱交換器
と導通し冷却水を供給する給水手段と、前記熱風循環経
路に取り付けられ、熱風温度を検出する第１の乾燥検知
センサーと、前記給水手段と熱交換器、水槽によって構
成される冷却水経路に取り付けられ、冷却水の温度を検
出する第２の乾燥検知センサーと、これらの乾燥検知セ
ンサーの温度を入力し、乾燥過程での特徴的な温度変化
を検出し乾燥終了を判断する乾燥制御部とからなる乾燥
検知手段とを備え、この第２の乾燥検知センサーは前記
水槽底面に設けられた穴にパッキンを介して挿入され、
このパッキンは水槽内部に面した部分を凹状にしたドラ
ム式洗濯乾燥機。3. A main body, a water tank supported by a suspension in the main body, a drum rotatably arranged in the water tank, a washing motor as a drive source for rotating the drum, and a water tank attached to the water tank. A lid that opens and closes the opening of the drum, a hot air circulation path through which the water tank, the heater, the blower fan, and the heat exchanger are connected by a duct, a water supply unit that is connected to the heat exchanger and supplies cooling water, and the hot air circulation. A first dryness detection sensor attached to the passage for detecting the temperature of hot air, and a second dryness detection attached to the cooling water passage constituted by the water supply means, the heat exchanger, and the water tank for detecting the temperature of the cooling water. It is equipped with a sensor and a dryness detection means including a dryness control unit that inputs the temperatures of these dryness detection sensors, detects a characteristic temperature change in the drying process, and determines the completion of drying. The second drying detecting sensor is inserted through the packing into a hole provided in said water tank bottom,
This packing is a drum type washer / dryer with the concave portion facing the inside of the water tank.