JP6513978B2 - Washing machine - Google Patents

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JP6513978B2
JP6513978B2 JP2015046115A JP2015046115A JP6513978B2 JP 6513978 B2 JP6513978 B2 JP 6513978B2 JP 2015046115 A JP2015046115 A JP 2015046115A JP 2015046115 A JP2015046115 A JP 2015046115A JP 6513978 B2 JP6513978 B2 JP 6513978B2
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tank
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washing machine
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JP2016165358A (en
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貴子 田沢
貴子 田沢
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Toshiba Lifestyle Products and Services Corp
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Description

本発明は、洗濯機に関する。   The present invention relates to a washing machine.

洗濯機においては、洗濯運転を繰り返し実行すると、内槽（回転槽）の外側や外槽（水槽）の内側に洗剤や石けん等の汚れが付着し、これに黒かび等が発生することがわかっている。このような汚れが多くなると、悪臭が発生したり、汚れが洗いやすすぎ運転中に剥離して洗濯物に付着したりすることがある。   In washing machines, it has been found that when the washing operation is repeatedly performed, dirt such as detergent or soap adheres to the outside of the inner tank (rotary tank) or the inside of the outer tank (water tank) and black mold etc. are generated. ing. When such stains increase, an offensive odor may be generated, and the stains may peel off during the washing or rinsing operation and adhere to the laundry.

これに対して、従来より、洗濯運転回数が設定値に達したときに槽を洗浄して上記の汚れを除去する槽洗浄運転を自動的に実行する洗濯機が知られている（例えば、下記特許文献１参照）。   On the other hand, conventionally, there has been known a washing machine which automatically executes a tank cleaning operation for cleaning the tank and removing the above-mentioned dirt when the number of times of washing operation reaches a set value (for example, Patent Document 1).

特開２０１３−２２６２４１号公報JP, 2013-226241, A

ところで、槽洗浄運転では、内槽及び外槽に付着した洗剤や石けん等の付着物をふやかして剥がれやすくするため、外槽に給水した後、外槽内の水を撹拌して外槽及び内槽を洗浄する前に、外槽に貯水した水に内槽を所定時間浸漬することがあるが、このような場合、外槽に貯水した水の温度が高ければ、内槽及び外槽の付着物がふやけて剥がれやすくなるとともに、槽洗浄運転の際に使用する槽洗浄剤の効能も高まる。   By the way, in the tank cleaning operation, the water in the outer tank is stirred and the water in the outer tank is stirred to make the outer tank and the inner tank clean so that the attached substances such as the detergent and the soap attached to the inner tank and the outer tank are opened easily. Before washing the tank, the inner tank may be immersed in the water stored in the outer tank for a predetermined time. In such a case, if the temperature of the water stored in the outer tank is high, the inner tank and the outer tank may be attached. While the kimono is easily discolored and peeled off, the efficacy of the bath cleaner used in the tank cleaning operation is also enhanced.

しかしながら、特許文献１の洗濯機では、外槽に貯水した水の温度に応じて内槽をつけ置きする時間を変更することができないため、つけ置き時間が不必要に長くなったり、あるいは、つけ置き時間が不足して充分な槽洗浄効果が得られないおそれがある。   However, in the washing machine of Patent Document 1, the time for putting and holding the inner tank can not be changed according to the temperature of the water stored in the outer tank, so the putting and holding time becomes unnecessarily long or There is a possibility that sufficient tank cleaning effect can not be obtained due to lack of placement time.

本発明は上記問題を考慮してなされたものであり、外槽に貯水した水に内槽をつけ置きする時間を外槽に貯水した水の温度に応じて適宜な時間に設定することができる洗濯機を提供することを目的とする。   The present invention has been made in consideration of the above problems, and the time for putting the inner tank in the water stored in the outer tank can be set to an appropriate time according to the temperature of the water stored in the outer tank. The purpose is to provide a washing machine.

本発明に係る洗濯機は、内部に洗濯水を溜める外槽と、前記外槽内に配設され衣類が収容される内槽と、前記外槽に給水する給水行程と、前記内槽を前記外槽に貯水した水に浸漬するつけ置き行程と、前記外槽内の水を排出する排水行程とを実行し前記外槽及び前記内槽を洗浄する槽洗浄手段と、を備え、前記槽洗浄手段は、前記外槽に給水された水の温度に応じて前記つけ置き行程において前記内槽を水に浸漬する時間を変更するものである。   The washing machine according to the present invention comprises an outer tub for storing washing water inside, an inner tub provided in the outer tub for containing clothes, a water supply stroke for supplying water to the outer tub, and the inner tub. And a tank cleaning means for executing the lavage process of immersing in the water stored in the outer tank and the drainage process of discharging the water in the outer tank to wash the outer tank and the inner tank; The means is for changing the time for which the inner tank is immersed in water in the putting-in process according to the temperature of the water supplied to the outer tank.

本発明の第１実施形態に係る洗濯機の縦断側面図である。It is a vertical side view of the washing machine concerning a 1st embodiment of the present invention. 図１の洗濯機に係る電気的構成を示すブロック図である。It is a block diagram which shows the electric constitution which concerns on the washing machine of FIG. 図１の洗濯機に係る制御内容を示すフロー図である。It is a flowchart which shows the control content which concerns on the washing machine of FIG. 本発明の第２実施形態に係る洗濯機のつけ置き時間を示す図である。It is a figure which shows the setting time of the washing machine which concerns on 2nd Embodiment of this invention. 本発明の第３実施形態に係る洗濯機の縦断側面図である。It is a vertical side view of the washing machine concerning a 3rd embodiment of the present invention. 本発明の第３実施形態に係る洗濯機のつけ置き時間を示す図である。It is a figure which shows the setting time of the washing machine which concerns on 3rd Embodiment of this invention.

（第１実施形態）
以下、本発明の第１実施形態について、図面を参照して説明する。 First Embodiment
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

図１に示す本実施形態に係る洗濯機１は、縦軸型の洗濯機であって、ほぼ矩形状をなす外箱２の内部に洗濯水を溜める外槽（水槽）３が弾性吊持機構４により弾性的に支持されて設けられている。水槽３内には、縦軸型の内槽（洗濯槽）５が設けられ、その洗濯槽５の内底部には、撹拌体６が設けられている。   The washing machine 1 according to the present embodiment shown in FIG. 1 is a vertical axis washing machine, and an outer tub (water tank) 3 for holding washing water inside an outer box 2 having a substantially rectangular shape has an elastic suspension mechanism. It is elastically supported by 4 and provided. An inner tank (washing tank) 5 of vertical axis type is provided in the water tank 3, and an agitator 6 is provided at the inner bottom of the washing tank 5.

水槽３の外底部には、回転駆動源であるモータ７と、モータ７の回転を伝達して洗濯槽５及び撹拌体６を回転駆動する機構部８とが設けられている。撹拌体６は、モータ７の出力軸７ａに連結されて回転駆動される。機構部８は、不図示のクラッチの切替によって、モータ７の出力軸７ａが、洗い及びためすすぎ時に撹拌体６と連結され、脱水時に洗濯槽５と撹拌体６と連結される。これにより、本実施形態では、洗い及びためすすぎ運転時に撹拌体６は正逆回転され、脱水運転時に洗濯槽５及び撹拌体６が一体的に高速回転する。   The outer bottom portion of the water tank 3 is provided with a motor 7 which is a rotational drive source, and a mechanism unit 8 which transmits rotation of the motor 7 to rotationally drive the washing tank 5 and the agitating body 6. The agitator 6 is connected to the output shaft 7 a of the motor 7 and is rotationally driven. In the mechanism unit 8, the output shaft 7a of the motor 7 is connected to the agitator 6 at the time of washing and rinsing by switching a clutch (not shown), and is connected to the washing tub 5 and the agitator 6 at the time of dewatering. Thereby, in the present embodiment, the stirring body 6 is rotated in forward and reverse directions during the washing and rinsing operation, and the washing tub 5 and the stirring body 6 integrally rotate at high speed during the dewatering operation.

水槽３の外底部に設けられた排水口９には、排水弁１０及び排水ホース１１が接続され、排水口９部分にエアトラップ１２が設けられている。このエアトラップ１２には、洗濯槽５内の水位が検知する水位センサ１３（図２参照）が設けられている。   A drainage valve 10 and a drainage hose 11 are connected to a drainage port 9 provided at the outer bottom of the water tank 3, and an air trap 12 is provided at the drainage port 9. The air trap 12 is provided with a water level sensor 13 (see FIG. 2) for detecting the water level in the washing tub 5.

外箱２の上部には、トップカバー１４が設けられている。このトップカバー１４のほぼ中央部には、衣類出入口１５が設けられていると共に、この衣類出入口１５を開閉する外蓋１６が設けられている。水槽３の上部には、水槽カバー１７が設けられている。この水槽カバー１７には、衣類出入口１５の下方に位置して開口部１８が形成されていると共に、開口部１８を開閉する内蓋１９が設けられている。   A top cover 14 is provided on the top of the outer box 2. A clothes entrance 15 is provided substantially at the center of the top cover 14, and an outer lid 16 for opening and closing the clothes entrance 15 is provided. At the upper part of the water tank 3, a water tank cover 17 is provided. The water tank cover 17 is provided with an opening 18 located below the clothes inlet 15 and an inner lid 19 for opening and closing the opening 18.

トップカバー１４には、衣類出入口１５の後方に位置して、給水弁２０、及び、洗剤投入部を有する注水ケース２１が設けられている。給水弁２０にはホース接続口２２が設けられていて、このホース接続口２２に、図示しない水道（給水源）の蛇口に接続された接続ホースが接続されるようになっている。注水ケース２１の出口には、蛇腹状の給水ホース２４が接続されている。この給水ホース２４の下端部が、洗濯槽５の上方に位置して水槽カバー１７に形成された給水口２５に接続されている。これにて、給水弁２０が開放されると、水道水が接続ホース、給水弁２０、注水ケース２１及び給水ホース２４を介して給水口２５から洗濯槽５内に供給される。   The top cover 14 is provided with a water supply valve 20 and a water injection case 21 having a detergent input part, which is located behind the clothes inlet / outlet 15. A hose connection port 22 is provided in the water supply valve 20, and a connection hose connected to a faucet of a water supply (water supply source, not shown) is connected to the hose connection port 22. A bellows-like water supply hose 24 is connected to the outlet of the water injection case 21. A lower end portion of the water supply hose 24 is connected to a water supply port 25 which is located above the washing tub 5 and formed in the water tank cover 17. Thus, when the water supply valve 20 is opened, tap water is supplied from the water supply port 25 into the washing tub 5 through the connection hose, the water supply valve 20, the water injection case 21 and the water supply hose 24.

また、このトップカバー１４の前面側には、使用者により操作可能な操作パネル２６が設けられると共に、その裏面側に位置して、マイコン等から構成される制御手段としての制御装置２７が設けられている。   Further, an operation panel 26 operable by the user is provided on the front side of the top cover 14, and a control device 27 as a control means configured of a microcomputer and the like is provided on the back side. ing.

操作パネル２６は、スタートスイッチやコース選択キーを含む各種のスイッチ入力部２８や、必要な表示を行う表示部２９を備える（図２参照）。使用者は、操作パネル２６に設けられたスイッチ入力部２８の操作により、洗濯運転のコースの選択や、水槽３及び洗濯槽５を洗浄する槽洗浄の運転開始を指示することができる。   The operation panel 26 includes various switch input units 28 including a start switch and a course selection key, and a display unit 29 that performs necessary display (see FIG. 2). The user can instruct the selection of the course of the washing operation and the start of the operation of washing the tub 3 and the washing tub 5 by operating the switch input unit 28 provided on the operation panel 26.

制御装置２７は、操作パネル２６の各種のスイッチ入力部２８からの操作信号、水位センサ１３、水温センサ３０、回転センサ３１からの検知信号が入力されるように構成されている。水温センサ３０は、水槽３内に給水された水（洗濯水）の温度に応じた水温検知信号を出力するものである。水温センサ３０は給水弁２０から水槽３に至る給水経路や水槽３内部に配置することができ、この例では注水ケース２１内に配置されている。また、制御装置２７には、給水弁２０、排水弁１０、モータ７が駆動回路３２を介して接続されている。   The control device 27 is configured to receive operation signals from various switch input units 28 of the operation panel 26 and detection signals from the water level sensor 13, the water temperature sensor 30, and the rotation sensor 31. The water temperature sensor 30 outputs a water temperature detection signal according to the temperature of the water (washing water) supplied into the water tank 3. The water temperature sensor 30 can be disposed in the water supply path from the water supply valve 20 to the water tank 3 or in the water tank 3, and in this example, is arranged in the water injection case 21. Further, a water supply valve 20, a drainage valve 10, and a motor 7 are connected to the control device 27 via a drive circuit 32.

そして、制御装置２７は、各センサ１３，３０，３１からの検知信号及び各種のスイッチ入力部２８からの操作信号及び制御プログラムに基づいて表示部２９、給水弁２０、排水弁１０、モータ７等を制御し、洗い、すすぎ、脱水の各行程からなる洗濯運転を実行する。また、洗濯機１は、洗濯運転コース以外にも、水槽３及び洗濯槽５を洗浄する槽洗浄コースを設定することができる。   Then, the control device 27 displays the display unit 29, the water supply valve 20, the drain valve 10, the motor 7 and the like based on the detection signals from the respective sensors 13, 30, 31 and the operation signals and control programs from various switch input units 28. To perform the washing operation consisting of the steps of washing, rinsing and dewatering. Moreover, the washing machine 1 can set the tank washing course which wash | cleans the water tank 3 and the washing tub 5 besides the washing driving course.

次に、上記構成の作用について図３を参照しながら説明する。使用者が操作パネル２６から槽洗浄コースを設定し当該コースの開始を指示すると（ステップＳ１）、制御装置２７は、給水行程、洗い行程、つけ置き行程、排水行程、給水行程、すすぎ行程、排水行程、及び脱水行程の各行程を順番に実行する。   Next, the operation of the above configuration will be described with reference to FIG. When the user sets the tank cleaning course from the operation panel 26 and instructs the start of the course (step S1), the controller 27 controls the water supply stroke, the washing stroke, the laying stroke, the drainage stroke, the water drainage stroke, the water supply stroke, the rinse stroke, the drainage stroke The stroke and dewatering strokes are performed in order.

詳細には、制御装置２７は、給水弁２０を開放させて水槽３内に洗濯時の最高水位より更に所定量だけ多くの水量を給水する（ステップＳ２）。制御装置２７は、給水行程中に水温センサ３０から水温検知信号を取得して水槽３に給水された水の温度を取得する（ステップＳ３）。また、給水行程を開始してから所定の水位に達すると、制御装置２７は、モータ７により撹拌体６を正逆両方向に間欠的に回転させる。   Specifically, the control device 27 opens the water supply valve 20 to supply a larger amount of water into the water tank 3 by a predetermined amount than the maximum water level at the time of washing (step S2). The control device 27 acquires a water temperature detection signal from the water temperature sensor 30 during the water supply stroke to acquire the temperature of the water supplied to the water tank 3 (step S3). In addition, when the water level reaches a predetermined level after the start of the water supply stroke, the controller 27 causes the motor 7 to intermittently rotate the agitator 6 in both forward and reverse directions.

給水行程が終了すると、洗濯槽５を水槽３に貯水された水に浸漬させたまま、撹拌体６を正逆両方向に間欠的に回転させる洗い行程を所定時間（例えば、５分間）実行する（ステップＳ４）。なお、洗い行程を開始する前に、水槽３及び洗濯槽５の洗浄に適した洗剤を水槽３内に投入することが好ましい。   When the water supply process is completed, while the washing tank 5 is immersed in the water stored in the water tank 3, a washing process for intermittently rotating the stirring body 6 in both forward and reverse directions is performed for a predetermined time (for example, 5 minutes) Step S4). Preferably, a detergent suitable for washing the water tank 3 and the washing tank 5 is introduced into the water tank 3 before the washing process is started.

洗い行程が終了すると、制御装置２７は、洗濯槽５を水槽３内に貯水された水に浸漬させた状態で所定時間待機するつけ置き行程を実行する（ステップＳ５）。このつけ置き行程は、ステップＳ３において取得した水槽３に給水された水の温度に応じて、つけ置き行程を実行する時間が異なっており、具体的には、水槽３に給水された水の温度が１０℃以下、１０℃以上２０℃未満、２０℃以上３０℃未満、３０℃以上４０℃未満、４０℃以上６０℃未満、６０℃以上のそれぞれの場合に、８時間、６時間、４時間、２時間、１時間、２０分間つけ置き行程を実行する。なお、つけ置き行程において、モータ７により間欠的に撹拌体６を正逆回転させ、水槽３内の水を攪拌してもよい。   When the washing process is completed, the control device 27 executes a placing process of waiting for a predetermined time in a state in which the washing tub 5 is immersed in the water stored in the water tank 3 (step S5). In this putting-in process, the time for executing the putting-in process differs depending on the temperature of the water supplied to the water tank 3 acquired in step S3. Specifically, the temperature of the water supplied to the water tank 3 10 ° C. or less, 10 ° C. or more and less than 20 ° C., 20 ° C. or more and less than 30 ° C., 30 ° C. or more and less than 40 ° C., 40 ° C. or more and less than 60 ° C., 60 ° C. or more in each case 8 hours, 6 hours, 4 hours , 2 hours, 1 hour, 20 minutes and carry out a rest process. In the placing process, the agitator 7 may be intermittently rotated in the forward and reverse directions by the motor 7 to agitate the water in the water tank 3.

つけ置き行程が終了すると、制御装置２７は、排水弁１０を開放させて水槽３内から排水し（ステップＳ６）、再び給水弁２０を開放させて水槽３内に洗濯時の最高水位より更に所定量だけ多くの水量を給水し（ステップＳ７）、その後、すすぎ行程を実行する（ステップＳ８）。なお、すすぎ行程は、上記した洗い行程と同様、所定時間（例えば、５分間）撹拌体６を正逆両方向に間欠的に回転させる。   When the putting-up process is completed, the control device 27 opens the drain valve 10 to drain water from the inside of the water tank 3 (step S6), opens the water supply valve 20 again, and further places the water tank 3 more than the maximum water level at the time of washing. Water is supplied by a fixed amount (step S7), and then a rinse step is performed (step S8). In the rinse step, as in the washing step described above, the stirring body 6 is intermittently rotated in both forward and reverse directions for a predetermined time (for example, 5 minutes).

すすぎ行程が終了すると、制御装置２７は、排水弁１０を開放させて水槽３内から排水し（ステップＳ９）、その後、排水弁１０を開放し水槽３内の水を排水ホース１１から機外へ排出しながら、モータ７により撹拌体６と洗濯槽５を所定速度（例えば、８００ｒｐｍ）で一体的に回転させる脱水行程を所定時間（例えば、１分間）実行し（ステップＳ１０）、その後、槽洗浄コースを終了する。   When the rinsing process is completed, the control device 27 opens the drainage valve 10 to drain water from the water tank 3 (step S9), and then opens the drainage valve 10 to drain the water in the water tank 3 from the drainage hose 11 to the outside of the machine A dewatering process is integrally performed by the motor 7 to rotate the stirring body 6 and the washing tub 5 at a predetermined speed (for example, 800 rpm) by the motor 7 for a predetermined time (for example, one minute) (step S10). Finish the course

以上のように本実施形態の洗濯機１によれば、水槽３に貯水した水の温度に応じて水槽３に貯水した洗濯槽５を浸漬する時間を設定することができるため、つけ置き時間が不必要に長くなったり、あるいは、つけ置き時間が不足して水槽３及び洗濯槽５に付着した洗剤や石けん等の付着物が残留したりすることを極力抑えることができ、安定した槽洗浄効果を得ることができる。   As described above, according to the washing machine 1 of the present embodiment, the time for immersing the washing tank 5 stored in the water tank 3 can be set according to the temperature of the water stored in the water tank 3. It is possible to minimize the possibility of unnecessary long time or insufficient adhering time such as detergent or soap adhering to the water tank 3 and the washing tank 5 remaining as a stable bath cleaning effect You can get

なお、本実施形態の洗濯機１において、水槽３内に貯水された水を加熱するヒータなどの加熱手段を設けてもよく、これにより、低室温時であっても水槽３内の水を加熱して槽洗浄効果を向上させることができる。その際、制御装置２７は、水槽３に給水された水（洗濯水）の温度を加熱手段の設定温度から取得し、これに基づいてつけ置き行程の実行時間を設定してもよい。   In the washing machine 1 of the present embodiment, heating means such as a heater for heating the water stored in the water tank 3 may be provided, thereby heating the water in the water tank 3 even at low room temperature. Thus, the tank cleaning effect can be improved. At that time, the control device 27 may acquire the temperature of the water (washing water) supplied to the water tank 3 from the set temperature of the heating means, and set the execution time of the placing and holding process based on this.

（第２実施形態）
次に、図４を参照しながら第２実施形態について説明する。 Second Embodiment
Next, a second embodiment will be described with reference to FIG.

本実施形態では、操作パネル２６に設けられたスイッチ入力部２８を使用者が操作することにより、槽洗浄コースの運転強度を設定することができ、設定された運転強度と水槽３に給水された水の温度とに応じて、つけ置き行程の実行時間を変更する。   In the present embodiment, when the user operates the switch input unit 28 provided in the operation panel 26, the driving strength of the tank cleaning course can be set, and the water is supplied to the water tank 3 with the set driving strength. Depending on the temperature of the water, change the execution time of the laying process.

具体的には、本実施形態の洗濯機１では、スイッチ入力部２８の操作により槽洗浄コースの運転強度を「強」、「中」、「弱」の３段階から選択した１の運転強度に設定できるようになっている。そして、制御装置２７は、図４に示すようなテーブルにしたがって、運転強度が「強」に設定されると、水槽３に貯水される水の温度が１０℃未満、１０℃以上２０℃未満、２０℃以上３０℃未満、３０℃以上４０℃未満、４０℃以上６０℃未満、６０℃以上のそれぞれの場合に、１２時間、９時間、６時間、３時間、１．５時間、３０分間つけ置き行程を実行し、運転強度が「中」に設定されると、水槽３に貯水される水の温度が１０℃未満、１０℃以上２０℃未満、２０℃以上３０℃未満、３０℃以上４０℃未満、４０℃以上６０℃未満、６０℃以上のそれぞれの場合に、８時間、６時間、４時間、２時間、１時間、２０分間つけ置き行程を実行し、運転強度が「弱」に設定されると、水槽３に貯水される水の温度が１０℃未満、１０℃以上２０℃未満、２０℃以上３０℃未満、３０℃以上４０℃未満、４０℃以上６０℃未満、６０℃以上のそれぞれの場合に、４時間、３時間、２時間、１時間、３０分間、１０分間」つけ置き行程を実行する。   Specifically, in the washing machine 1 of the present embodiment, the operating strength of the tank cleaning course is selected as one of the three levels of "strong", "medium" and "weak" by the operation of the switch input unit 28. It can be set. Then, when the operation intensity is set to "strong" according to the table as shown in FIG. 4, the control device 27 sets the temperature of the water stored in the water tank 3 to less than 10 ° C, 10 ° C or more and less than 20 ° C. 12 hours, 9 hours, 6 hours, 3 hours, 3 hours, 1.5 hours, 30 minutes in each case of 20 ° C or more and less than 30 ° C, 30 ° C or more and less than 40 ° C, 40 ° C or more and less than 60 ° C, 60 ° C or more If the operation strength is set to “medium”, the temperature of the water stored in the water tank 3 is less than 10 ° C., 10 ° C. or more and less than 20 ° C., 20 ° C. or more and less than 30 ° C., 30 ° C. or more In each case of less than 40 ° C, less than 40 ° C and less than 60 ° C, and 60 ° C or more, execute the setting stroke for 8 hours, 6 hours, 4 hours, 2 hours, 1 hour, 1 hour and 20 minutes, and the driving strength becomes "weak" If set, the temperature of the water stored in the water tank 3 is less than 10 ° C, 10 ° C Above 20 ° C, 20 ° C to 30 ° C, 30 ° C to 40 ° C, 40 ° C to 60 ° C, 60 ° C or more, 4 hours, 3 hours, 2 hours, 1 hour, 30 minutes, Perform a 10-minute "set-up process.

以上のような本実施形態の洗濯機１であると、使用者が槽洗浄コースの運転強度を変更することができるため、洗濯機１の使用状況に応じたつけ置き時間に設定することができる。   With the washing machine 1 according to the present embodiment as described above, the user can change the operation strength of the bath cleaning course, and therefore, it is possible to set the laying time according to the use situation of the washing machine 1 .

（第３実施形態）
次に、図５及び図６を参照しながら第３実施形態について説明する。 Third Embodiment
Next, a third embodiment will be described with reference to FIGS. 5 and 6.

本実施形態では、水槽３及び洗濯槽５の汚れ度合を汚れ検出部４０で検出し、その検出結果と水槽３に給水された水の温度とに基づいて、つけ置き行程の実行時間を変更する。   In the present embodiment, the soiling detection unit 40 detects the degree of soiling of the water tank 3 and the washing tank 5, and changes the execution time of the laying process based on the detection result and the temperature of the water supplied to the water tank 3. .

具体的には、図５に示すように、本実施形態の洗濯機１では、水槽３、例えば、水槽３の排水口９近傍のエアトラップ１２に汚れ検出部４０が設けられている。   Specifically, as shown in FIG. 5, in the washing machine 1 of the present embodiment, the dirt detection unit 40 is provided in the water tank 3, for example, the air trap 12 in the vicinity of the drainage port 9 of the water tank 3.

汚れ検出部４０は、エアトラップ１２を区画する対向壁に設けた一対の透光窓４１，４２と、一方の透光窓４１の外側に設けられた発光素子４３と、他方の透光窓４２の外側に設けられた受光素子４４とを備え、水槽３に貯水された状態で発光素子４３から放出された光を一対の透光窓４１，４２を介して受光素子４４で受光し、受光素子４４が受光した光量から水槽３及び洗濯槽５の汚れ度合を検出する。つまり、汚れ検出部４０は、受光素子４４が受光する光量が少なければ少ないほど、水槽３に貯水された水が濁っており、水槽３及び洗濯槽５の汚れ度合が大きいことを検出し、この例では、汚れ度合を「多」、「中」、「少」の３段階で検出する。   The dirt detection unit 40 includes a pair of light transmitting windows 41 and 42 provided on opposite walls partitioning the air trap 12, a light emitting element 43 provided on the outside of one light transmitting window 41, and the other light transmitting window 42. And the light emitted from the light emitting element 43 in a state of being stored in the water tank 3 is received by the light receiving element 44 through the pair of light transmitting windows 41 and 42, and the light receiving element The degree of soiling of the water tank 3 and the washing tank 5 is detected from the amount of light received by the light source 44. That is, as the amount of light received by the light receiving element 44 decreases, the contamination detection unit 40 detects that the water stored in the water tank 3 is more turbid, and the contamination degree of the water tank 3 and the washing tank 5 is large. In the example, the degree of contamination is detected in three stages of "many", "medium", and "small".

そして、制御装置２７は、図６に示すようなテーブルにしたがって、汚れ検出部４０の検出結果が「多」であると、水槽３に貯水される水の温度が１０℃未満、１０℃以上２０℃未満、２０℃以上３０℃未満、３０℃以上４０℃未満、４０℃以上６０℃未満、６０℃以上のそれぞれの場合に、１２時間、９時間、６時間、３時間、１．５時間、３０分間つけ置き行程を実行し、汚れ検出部４０の検出結果が「中」であると、水槽３に貯水される水の温度が１０℃未満、１０℃以上２０℃未満、２０℃以上３０℃未満、３０℃以上４０℃未満、４０℃以上６０℃未満、６０℃以上のそれぞれの場合に、８時間、６時間、４時間、２時間、１時間、２０分間つけ置き行程を実行し、汚れ検出部４０の検出結果が「少」であると、水槽３に貯水される水の温度が１０℃未満、１０℃以上２０℃未満、２０℃以上３０℃未満、３０℃以上４０℃未満、４０℃以上６０℃未満、６０℃以上のそれぞれの場合に、４時間、３時間、２時間、１時間、３０分間、１０分間」つけ置き行程を実行する。   Then, according to the table as shown in FIG. 6, if the detection result of the dirt detection unit 40 is “many”, the temperature of the water stored in the water tank 3 is less than 10 ° C., 10 ° C. or more 20 20 ° C to 30 ° C, 30 ° C to 40 ° C, 40 ° C to 60 ° C, 60 ° C or more for 12 hours, 9 hours, 6 hours, 3 hours, 1.5 hours, respectively The temperature of the water stored in the water tank 3 is less than 10 ° C., 10 ° C. or more and less than 20 ° C., 20 ° C. or more 30 ° C. if the detection result of the dirt detection unit 40 is “medium”. In each case of less than 30 ° C or more and less than 40 ° C, 40 ° C or more and less than 60 ° C, 60 ° C or more, execute 8 hours, 6 hours, 4 hours, 2 hours, 2 hours, 1 hour, 20 minutes putting in place and dirt If the detection result of the detection unit 40 is "small", the water is stored in the water tank 3 Water temperature is less than 10 ° C, 10 ° C or more and less than 20 ° C, 20 ° C or more and less than 30 ° C, 30 ° C or more and less than 40 ° C, 40 ° C or more and less than 60 ° C, 60 ° C or more for 4 hours and 3 hours , 2 hours, 1 hour, 30 minutes, 10 minutes "and carry out the rest process.

以上のような本実施形態の洗濯機１であると、水槽３及び洗濯槽５の汚れ度合に応じたつけ置き時間に設定することができ、つけ置き時間が不必要に長くなったり、あるいは、つけ置き時間が不足して水槽３及び洗濯槽５に付着した洗剤や石けん等の付着物が残留したりすることを極力抑えることができ、安定した槽洗浄効果を得ることができる。   With the washing machine 1 of the present embodiment as described above, the setting time can be set according to the degree of soiling of the water tank 3 and the washing tank 5, and the setting time becomes unnecessarily long, or It is possible to minimize the remaining of the attached substances such as the detergent and the soap adhering to the water tank 3 and the washing tank 5 due to lack of the putting-up time, and a stable bath cleaning effect can be obtained.

なお、汚れ検出部４０は、洗濯物の汚れの影響を受けない状態で水槽３に貯水されていれば水槽３及び洗濯槽５の汚れ度合を検出することができるが、槽洗浄コースにおいて給水行程及び洗い行程の終了後であってつけ置き行程を開始するまでの間に汚れ度合を検出することが好ましい。その際、水槽３にあらかじめ加熱した温水を給水する、あるいは、水槽３に設けた加熱手段により水槽３内に貯水された水を加熱して温水化してから洗い行程を行い、その後、汚れ検出部４０で汚れ度合を検出することが好ましい。このように水槽３に温水を貯水した状態で撹拌体６を回転させて洗い行程を実行することで、水槽３及び洗濯槽５に付着した洗剤や石けん等によって水槽３の水が白濁しやすくなり、汚れ検出部４０によって水槽３及び洗濯槽５の汚れ度合を精度よく検出することができる。   The dirt detection unit 40 can detect the degree of dirt on the water tank 3 and the washing tank 5 if the water is stored in the water tank 3 without being affected by the dirt on the laundry, but the water supply stroke in the tank washing course It is preferable to detect the degree of soiling after the end of the washing process and before the start of the laying process. At this time, warm water is supplied to the water tank 3 in advance, or the water stored in the water tank 3 is heated by the heating means provided in the water tank 3 to make it warm and then the washing process is performed. Preferably, the degree of contamination is detected at 40. As described above, by carrying out the washing process by rotating the stirring body 6 in a state where the hot water is stored in the water tank 3, the water in the water tank 3 tends to become cloudy due to the detergent or soap attached to the water tank 3 and the washing tank 5. The dirt detection unit 40 can accurately detect the degree of dirt on the water tank 3 and the washing tub 5.

また、汚れ検出部４０による水槽３及び洗濯槽５の汚れ度合の検出は、上記のような槽洗浄コースの実行中に限定されない。例えば、洗い、すすぎ、脱水の各行程からなる洗濯運転における最終回のすすぎ行程時に水槽３及び洗濯槽５の汚れ度合を汚れ検出部４０で検出しこれを記憶しておき、槽洗浄コースの実行の際に、直前の洗濯運転において検出した汚れ度合と水槽３に給水された水の温度とに基づいて、つけ置き行程の実行時間を変更してもよい。   In addition, the detection of the degree of soiling of the water tank 3 and the washing tank 5 by the soiling detection unit 40 is not limited during the execution of the above-described tank cleaning course. For example, the dirt detection unit 40 detects the degree of soiling of the water tank 3 and the washing tank 5 at the final rinse stroke in the washing operation consisting of washing, rinsing, and dewatering steps, and stores this and executes the tank washing course At this time, the execution time of the placing process may be changed based on the degree of soiling detected in the immediately preceding washing operation and the temperature of the water supplied to the water tank 3.

（他の実施形態）
上記の各実施形態では、水槽３内に縦軸型の洗濯槽５が設けられた縦型洗濯機について説明したが、本発明はこれに限定されず、内槽が外槽内で傾斜するように配置されたドラム式洗濯機の槽洗浄コースにも適用することができる。 (Other embodiments)
In each of the above embodiments, the vertical washing machine in which the vertical washing tub 5 is provided in the water tank 3 has been described, but the present invention is not limited thereto, and the inner tub is inclined in the outer tub The present invention can also be applied to the tub washing course of a drum-type washing machine arranged in

以上、本発明の実施形態を説明したが、これらの実施形態は例として提示したものであり、発明の範囲を限定することを意図していない。これらの実施形態は、その他の様々な形態で実施されることが可能であり、発明の趣旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これらの実施形態やその変形は、発明の範囲や要旨に含まれると同様に、特許請求の範囲に記載された発明とその均等の範囲に含まれるものである。   While the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in other various forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the invention described in the claims and the equivalents thereof as well as included in the scope and the gist of the invention.

１…洗濯機、２…外箱、３…外槽（水槽）、４…弾性吊持機構、５…内槽（洗濯槽）、２６…操作パネル、２７…制御装置、２８…スイッチ入力部、２９…表示部、３０…水温センサ、４０…汚れ検出部 DESCRIPTION OF SYMBOLS 1 ... Washing machine, 2 ... Outer box, 3 ... Outer tank (water tank), 4 ... Elastic suspension mechanism, 5 ... Inner tank (washing tank) 26, 26 ... Operation panel, 27 ... Control device, 28 ... Switch input part, 29: display unit, 30: water temperature sensor, 40: dirt detection unit

Claims (7)

内部に洗濯水を溜める外槽と、
前記外槽内に配設され衣類が収容される内槽と、
前記外槽に給水する給水行程と、前記内槽を前記外槽に貯水した水に浸漬するつけ置き行程と、前記外槽内の水を排出する排水行程とを実行し前記外槽及び前記内槽を洗浄する槽洗浄手段と、を備え、
前記槽洗浄手段は、前記外槽に給水された水の温度に応じて前記つけ置き行程において前記内槽を水に浸漬する時間を変更する洗濯機。 An outer tank that holds wash water inside,
An inner tank disposed in the outer tank and containing the clothes;
The outer tank and the inside are executed by executing a water supply process of supplying water to the outer tank, a laying process of immersing the inner tank in the water stored in the outer tank, and a drainage process of discharging water in the outer tank. Tank cleaning means for cleaning the tank;
The washing machine changes the time in which the inner tank is immersed in the water in the putting-in process according to the temperature of the water supplied to the outer tank. 前記外槽内の水の温度又は前記外槽に給水される水の温度を検知する温度センサを備え、
前記槽洗浄手段は、前記温度センサの検知温度に応じて前記つけ置き行程において前記内槽を水に浸漬する時間を変更する請求項１に記載の洗濯機。 A temperature sensor for detecting a temperature of water in the outer tank or a temperature of water supplied to the outer tank,
2. The washing machine according to claim 1, wherein the bath cleaning unit changes a time in which the inner bath is immersed in water in the putting-in process according to a temperature detected by the temperature sensor. 前記外槽内の水を加熱する加熱手段を備え、
前記槽洗浄手段は、前記加熱手段の設定温度に応じて前記つけ置き行程において前記内槽を水に浸漬する時間を変更する請求項１に記載の洗濯機。 A heating unit configured to heat the water in the outer tank;
2. The washing machine according to claim 1, wherein the bath cleaning means changes a time in which the inner bath is immersed in water in the laying process according to a set temperature of the heating means. 前記外槽及び前記内槽の汚れ度合を検出する汚れ検出手段を備え、
前記槽洗浄手段は、前記汚れ検出手段の検出結果と前記外槽に給水された水の温度に応じて前記つけ置き行程において前記内槽を水に浸漬する時間を変更する請求項１〜３のいずれか１項に記載の洗濯機。 A dirt detection means for detecting the degree of contamination of the outer tank and the inner tank;
The said tank washing | cleaning means changes the time which immerses the said inner tank in water in the said putting-on process according to the detection result of the said stain | pollution | contamination detection means, and the temperature of the water water-supplied to the said outer tank. The washing machine according to any one of the items. 使用者が槽洗浄手段の強度を設定する設定手段を備え、
前記槽洗浄手段は、前記設定手段によって設定された強度と、前記外槽に給水された水の温度に応じて前記つけ置き行程において前記内槽を水に浸漬する時間を変更する請求項１〜３のいずれか１項に記載の洗濯機。 The user is provided with setting means for setting the strength of the tank cleaning means,
The tank cleaning means changes the time for immersing the inner tank in water in the putting-in process according to the strength set by the setting means and the temperature of the water supplied to the outer tank. The washing machine according to any one of 3. 前記汚れ検出手段は、前記外槽に貯水した水を撹拌した後、前記外槽及び前記内槽の汚れ度合を検出する請求項４に記載の洗濯機。 The washing machine according to claim 4, wherein the dirt detection means detects the degree of dirt on the outer tub and the inner tub after stirring the water stored in the outer tub. 洗濯物の洗い行程の終了後に１又は複数回のすすぎ行程を行う洗濯手段を備え、
前記汚れ検出手段は、最終回のすすぎ行程時に前記外槽及び前記内槽の汚れ度合を検出する請求項４に記載の洗濯機。 Equipped with laundry means for performing one or more rinse steps after the end of the washing process of the laundry,
The washing machine according to claim 4, wherein the dirt detecting means detects the dirt degree of the outer tub and the inner tub at the final rinse step.
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