WO2020003760A1 - Washing machine - Google Patents

Washing machine Download PDF

Info

Publication number
WO2020003760A1
WO2020003760A1 PCT/JP2019/018655 JP2019018655W WO2020003760A1 WO 2020003760 A1 WO2020003760 A1 WO 2020003760A1 JP 2019018655 W JP2019018655 W JP 2019018655W WO 2020003760 A1 WO2020003760 A1 WO 2020003760A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
washing
tub
tank
temperature
Prior art date
Application number
PCT/JP2019/018655
Other languages
French (fr)
Japanese (ja)
Inventor
池水　麦平
脇田　克也
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to JP2020527254A priority Critical patent/JPWO2020003760A1/en
Publication of WO2020003760A1 publication Critical patent/WO2020003760A1/en

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements

Definitions

  • the present invention relates to a washing machine for washing clothes and the like.
  • washing machines equipped with a tub washing course have been considered in order to wash the above-mentioned dirt.
  • the washing tub does not contain laundry such as clothes. Further, when a laundry detergent is used in the tub washing course, bubbles are generated in the washing tub, and a load is applied to a motor for rotating and driving the washing tub, resulting in power loss. In addition, when the water in the washing machine is drained, bubbles remain in the washing tub, which causes soiling of the washing tub. Therefore, a washing machine configured to remove the detergent remaining in the washing tub at the beginning of the tub washing course has been proposed (for example, see Patent Document 1).
  • Patent Literature 1 does not use the cleaning power of the detergent for tub cleaning because the detergent is removed in the tub cleaning course at an early stage of operation. Further, in the case of Patent Literature 2, at the time of washing the tub, it is necessary to use a dedicated detergent for tub washing with reduced foaming, in addition to the laundry detergent used for washing clothes.
  • the present invention provides a washing machine capable of washing a tub with a laundry detergent used for washing clothes and the like.
  • a washing machine of the present invention includes a washing tub rotatably provided in a water tub, a motor for rotating and driving the washing tub, a water supply unit for supplying water to the water tub, a drainage unit for draining water in the water tub, A heating unit that heats the water stored in the tub, a temperature detection unit that detects the temperature of the water in the water tub, and a control unit that controls the washing operation and the tub cleaning operation.
  • the control unit performs the charging of the laundry detergent into the tub, the supply of water in the tub by the water supply unit, and the heating of the water stored in the tub by the heating unit.
  • the control unit is configured to, when the temperature detecting unit detects that the water in the water tub is heated to a predetermined temperature, control the rotation of the washing tub and stir the water in the water tub.
  • the water containing the laundry detergent is agitated while the water temperature is rising.
  • a washing machine that suppresses foaming of the detergent and can wash the tub with the laundry detergent.
  • FIG. 1 is a schematic configuration diagram of a washing machine according to Embodiment 1 of the present invention.
  • FIG. 2 is a block diagram of the washing machine.
  • FIG. 3 is a time chart showing the operation of the washing machine during the tub washing operation.
  • FIG. 4 is a graph showing the relationship between the temperature of the washing machine and the sterilization effect.
  • FIG. 5 is a time chart showing an operation during a tub cleaning operation of the washing machine according to Embodiment 2 of the present invention.
  • FIG. 1 is a schematic configuration diagram of a washing machine according to Embodiment 1 of the present invention.
  • FIG. 2 is a block diagram of the washing machine.
  • FIG. 3 is a time chart showing the operation of the washing machine during the tub washing operation.
  • FIG. 4 is a graph showing the relationship between the temperature of the washing machine and the sterilization effect.
  • the washing machine according to the first embodiment is a so-called drum type washing machine in which the rotating shaft 3a of the drum 3, which is the washing tub 3, is disposed in a horizontal direction (including an inclination).
  • the washing machine includes a housing 1, a water tub 2 elastically supported in the housing 1, and the like.
  • the water tub 2 includes a cylindrical drum 3 with a bottom, which is a washing tub 3 rotatably provided inside.
  • the drum 3 is arranged such that the rotating shaft 3a is inclined forward (upper left in the drawing) by an angle ⁇ (for example, 10 degrees).
  • the door 25 is defined as the front
  • the motor 7 is defined as the rear
  • the detergent injection device 10 is defined as the upper side
  • the drainage channel 12 is defined as the lower side.
  • the drum 3 includes a plurality of baffles 4 protruding inward toward the rotation center of the drum 3 and a number of small holes 5 communicating with the inside of the water tank 2 on the inner peripheral side surface. Further, the drum 3 includes an opening 6 provided on the front side. Through the opening 6, the user can load laundry such as clothes (hereinafter sometimes referred to as “substance to be washed”) into the drum 3 and take it out of the drum 3.
  • laundry such as clothes
  • the water tank 2 is provided on the rear surface and includes a motor 7 for driving the drum 3 to rotate.
  • the motor 7 is an inverter-controlled, for example, a brushless DC motor.
  • the rotation speed of the motor 7 is variably driven by inverter control.
  • the water supply pipe 8 for supplying the washing water into the water tub 2 is connected to, for example, a faucet (not shown) of the water supply and includes a water supply valve 9 which is a water supply unit.
  • the water supply pipe 8 is connected in communication with a detergent introduction device 10 for introducing a detergent.
  • the detergent introduction device 10 is connected to the water tank 2 through a water supply channel 11.
  • the washing water flows from the water supply pipe 8 through the detergent introduction device 10 and the water supply passage 11 and is supplied into the water tub 2.
  • the washing water includes not only water in which the detergent is dissolved but also mere water.
  • the drainage path 12 includes a drainage valve 13 which is a drainage part, a drainage filter 14, and the like.
  • the drain filter 14 is disposed at a position where the washing water circulates during washing, and collects, for example, a button that has come off the object to be washed.
  • the drain filter 14 is provided detachably from the front side of the housing 1.
  • the circulation water channel 16 is provided so as to guide the washing water in the water tub 2 from the drain port 15 of the water tub 2 to the opening 6 side of the drum 3 located in the front part of the water tub 2.
  • the circulation channel 16 includes a pump 17 for circulating washing water, a discharge port 18, and the like.
  • the pump 17 is installed at the bottom in the housing 1 and is arranged downstream of the drain filter 14. By driving the pump 17, the washing water in the water tub 2 is discharged from the discharge port 18 toward the inside of the drum 3.
  • the heater 19 constitutes a heating unit for heating water stored in the water tank 2, and is disposed near the bottom in the water tank 2.
  • the heater 19 is provided at a position where the heater 19 is submerged when a predetermined amount of water is stored in the water tank 2.
  • Water amount detector 20 detects the amount of washing water supplied into water tub 2.
  • the temperature detector 21 is disposed near the drain 15 of the water tank 2 and detects the temperature of water in the water tank 2.
  • the temperature detection unit 21 is configured by, for example, a thermistor.
  • the cloth amount detection unit 23 detects the amount of the object to be washed put into the drum 3.
  • the rotation detecting unit 24 detects a driving amount of the drum 3, such as a rotation speed.
  • the control unit 22 is disposed in the housing 1 and controls various components based on input information to execute a washing operation, a tub washing operation, and the like.
  • the control unit 22 controls the amount of the washing target detected by the cloth amount detection unit 23, the amount of the washing water detected by the water amount detection unit 20, and the temperature detection unit 21.
  • the detected water temperature, the driving amount (for example, the number of rotations) of the drum 3 detected by the rotation detecting unit 24, and the like are input as information.
  • control unit 22 controls the motor 7, the water supply valve 9, the drain valve 13, the pump 17, the heater 19, and the like based on the input information, and sequentially controls a washing step, a rinsing step, a dehydration step, and the like. Perform a washing operation.
  • control unit 22 executes a tank cleaning operation to be described later, and cleans the water tank 2, the drum 3, the circulation water passage 16, and the like.
  • the user When using the washing machine, the user first opens the door 25 provided on the front surface of the housing 1 so as to be openable and closable. As a result, the object to be cleaned can be taken in and out through the opening 6 of the drum 3 provided on the front side of the drum 3.
  • the operation display unit 26 is provided at the upper part on the front side of the housing 1.
  • the user can input settings for operating the washing machine via the operation display unit 26. Further, the operation display unit 26 displays the setting contents and the operation status of the washing machine. As a result, the user can grasp the setting contents and the driving conditions, and can correct the setting contents as necessary.
  • the washing machine of the first embodiment is configured.
  • the user opens the door 25 and throws the article to be washed into the drum 3 through the opening 6.
  • the user turns on a power switch (not shown) of the operation display unit 26 and presses a start switch (not shown), for example.
  • a power switch not shown
  • a start switch not shown
  • a washing step is executed.
  • the controller 22 first detects the amount (for example, the weight) of the object to be washed put into the drum 3 by the cloth amount detector 23. Specifically, the cloth amount detection unit 23 detects the amount of the object to be cleaned from the amount of torque applied to the motor 7 and the current value of the motor 7 when the motor 7 rotates the drum 3.
  • the cloth amount detection unit 23 detects the amount of the object to be cleaned from the amount of torque applied to the motor 7 and the current value of the motor 7 when the motor 7 rotates the drum 3.
  • control unit 22 sets the amount of water to be supplied into the water tank 2 according to the amount of the object to be cleaned detected by the cloth amount detection unit 23. Further, the control unit 22 sets a time for executing each step such as a washing step, a rinsing step, and a dehydration step. Further, the control unit 22 determines a guideline detergent amount from a preset detergent amount according to the amount of the object to be cleaned, and displays the detergent amount on the operation display unit 26. At this time, the user puts the laundry detergent in a detergent container (not shown) in the detergent feeding device 10 in advance.
  • control unit 22 automatically injects an appropriate amount of the detergent in the detergent container into the water tank 2 by a tube pump (not shown) in accordance with the amount of the object to be washed.
  • control unit 22 opens the water supply valve 9.
  • the water supplied from the tap water flows through the water supply path 11 as the washing water together with the injected detergent via the detergent injection device 10 and is supplied into the water tank 2.
  • the drain valve 13 is closed, the washing water collects at the bottom in the water tub 2.
  • the washing water accumulated in the water tub 2 flows into the drum 3 from the small holes 5 on the outer peripheral side surface of the drum 3.
  • the user may manually input the laundry detergent according to the standard of the detergent amount displayed on the operation display unit 26 without performing the automatic injection of the detergent.
  • the control unit 22 detects the amount of water supplied into the water tank 2 with the water amount detection unit 20. Then, the control unit 22 closes the water supply valve 9 when the set amount of water is supplied according to the amount of the object to be cleaned. At this time, the control unit 22 drives the drum 3 to rotate in one direction by the motor 7 at a rotation speed of, for example, 20 rpm so that the cleaning target rolls in the drum 3 during water supply. Thereby, the penetration of the washing water into the object to be washed is accelerated. At this time, the amount of water in the water tub 2 generally drops from the set water level due to the absorption of the washing water into the object to be washed. Therefore, the control unit 22 opens the water supply valve 9 again, replenishes the water tank 2 with a reduced amount of water, and returns to the set water level. Note that this does not apply if the water level does not drop from the set water level.
  • the control unit 22 drives the pump 17.
  • the washing water accumulated at the bottom in the water tub 2 is guided from the drain port 15 to the circulation channel 16.
  • the washing water guided to the circulation channel 16 flows through the circulation channel 16.
  • the fluid is discharged from the discharge port 18 of the circulation water channel 16 into the drum 3.
  • the discharged washing water flows out of the small hole 5 of the drum 3 into the water tub 2 and circulates again from the drain port 15 through the circulation channel 16.
  • the cleaning water sufficiently permeates the object to be cleaned.
  • the control unit 22 executes so-called slap washing of the object to be cleaned.
  • the tap washing is performed by alternately rotating the drum 3 forward and reverse at predetermined rotation speeds (for example, 42 rpm) by the motor 7 at predetermined rotation speeds (for example, 15 seconds).
  • predetermined rotation speeds for example, 42 rpm
  • the object to be cleaned is first lifted by the baffle 4 in the rotation direction of the drum 3. Thereafter, the object to be washed falls from the upper portion in the lifted drum 3. Thereby, the object to be cleaned is cleaned.
  • control unit 22 executes the washing step for a set predetermined time (for example, 10 minutes). Thereafter, the control unit 22 opens the drain valve 13 and discharges the washing water from the washing machine to the outside of the machine. Thereby, the washing step of the washing operation ends.
  • control unit 22 executes the rinsing step and the dehydrating step in this order. Then, the control unit 22 ends the washing operation. Detailed description of the rinsing step and the dehydration step is omitted.
  • the above-mentioned washing water is a general term for water used in washing machines. That is, the washing water includes detergent-free water supplied to the washing machine, washing water containing the supplied detergent, and rinsing water for washing away detergent components and dirt in the rinsing step.
  • the tub washing operation is an operation that is performed separately from the washing operation to wash the water tank 2, the drum 3, the circulation water passage 16, and the like.
  • the tank cleaning operation includes steps such as a tank cleaning step, a draining step, a rinsing step, and a draining step, which are sequentially executed.
  • the user first turns on the power switch (not shown) of the operation display unit 26 and sets the tank cleaning operation. After the setting, the user presses, for example, a start switch (not shown). Thereby, the tank cleaning operation is started.
  • a tank cleaning step is performed.
  • the control unit 22 opens the water supply valve 9. Thereby, the water supplied from the tap water is supplied into the water tank 2 via the detergent introduction device 10. At this time, the detergent for washing is put into the water tub 2 as in the washing step of the washing operation.
  • the water collected at the bottom of the water tank 2 flows into the drum 3 from the small holes 5 on the outer peripheral side surface of the drum 3.
  • the control unit 22 detects the amount of water supplied into the water tank 2 with the water amount detection unit 20.
  • the amount of water supplied is set to, for example, two levels of a water level “low” and “high”, and in the tank cleaning step, the water level is set to “low”. Is done. That is, when the water amount detection unit 20 detects the predetermined water level “low”, the control unit 22 closes the water supply valve 9.
  • the water level “low” corresponds to the amount of the heater 19 submerged in the supplied water and the lower part of the drum 3 contacting the water.
  • the user may set the amount of the laundry detergent to be supplied to the detergent supply device 10 in advance according to the type of the detergent (eg, powder or liquid).
  • the type of the detergent eg, powder or liquid.
  • the control unit 22 energizes the heater 19 to heat the water at the temperature T0 stored at the bottom of the water tank 2 to the set temperature T1. Specifically, the control unit 22 controls the amount of power to the heater 19 and the like based on the output (detected temperature) of the temperature detection unit 21. Thereby, water evaporates with heating, and steam is generated in the water tank 2. At this time, since the lower part of the drum 3 is in contact with the heated warm water, the drum 3 is directly heated by the warm water. As a result, the drum 3 having a large mass and a large heat capacity is efficiently heated, and the temperature in the water tank 2 can be quickly increased.
  • the control unit 22 drives the drum 3 to rotate at the rotation control S0 almost simultaneously with energization of the heater 19.
  • the peripheral side surface of the drum 3 is heated by the hot water.
  • the rotation of the drum 3 stirs the hot water, thereby promoting the generation of steam. That is, the drum 3 is driven to rotate while the temperature of the water in the water tank 2 is increased by heating. Therefore, the inside of the water tank 2 can be quickly heated from a low temperature stage.
  • the rotation control S0 is a control operation that repeats, for example, “20 rpm, driving for 5 seconds, stopping 25 seconds”.
  • the control unit 22 controls the heater 19 so as to maintain the temperature near the set temperature T1 for a predetermined time. For example, when the set temperature T1 is 60 ° C., the control unit 22 turns off the heater 19 when the water temperature reaches 60 ° C. When the water temperature drops to 59 ° C., the control unit 22 turns on the heater 19 again. The above ON / OFF control is repeated to maintain the water temperature at around 60 ° C., which is the set temperature T1.
  • the control unit 22 drives the drum 3 by the rotation control S2.
  • the rotation control S2 is a control operation that repeats, for example, “40 rpm, driving for 10 seconds, and stopping for 10 seconds”. Thereby, the hot water is stirred by the rotation of the drum 3. As a result, the water tank 2, the drum 3, and the like are effectively washed with the warm water being stirred.
  • the inside of the water tank 2 can be sterilized by heating the water tank 2 with steam or hot water.
  • the higher the temperature the more advantageous.
  • the set temperature T1 is set to a high temperature, it is necessary to consider the heat resistant temperature of the resin material that is the structure of the washing machine. Furthermore, it takes time to heat the water supplied into the water tank 2 to the high set temperature T1. Therefore, the set temperature T1 is set in the above-mentioned temperature range because the same effect can be exhibited in a shorter time and at a low temperature as at a high temperature.
  • FIG. 4 is a graph showing the relationship between the heating temperature and the holding time for mold and the bactericidal effect.
  • the set temperature T1 is set to the above-mentioned 50 ° C.
  • the control unit 22 drives the pump 17. Thereby, the heated water in the water tank 2 flows and circulates through the circulation channel 16. Specifically, the heated water is sucked from the drain port 15 at the bottom of the water tank 2, passes through the drain filter 14, and is guided to the circulation channel 16. The water flowing into the circulation channel 16 is discharged from the discharge port 18 into the drum 3. Then, the water discharged into the drum 3 flows out of the small hole 5 of the drum 3 into the water tank 2 and circulates again from the drain port 15 through the circulation channel 16.
  • the pump 17 be driven at a low speed so that bacteria and mold come into contact with the warm water for a long time. Specifically, it is preferable to drive the pump 17 so that the hot water flows at a speed that allows the hot water to flow in the circulation water channel 16 without staying.
  • the pump 17 may be driven continuously or intermittently.
  • control unit 22 executes the bath cleaning step for a predetermined time set in advance (for example, 10 minutes after the temperature reaches the set temperature T1), and stops the energization of the heater 19.
  • control unit 22 executes a drain step of the tank cleaning operation.
  • the control unit 22 opens the drain valve 13 as shown in FIG. As a result, water containing dirt in the water tank 2 and the circulation water passage 16 is discharged to the outside of the machine through the drain passage 12.
  • control unit 22 executes a rinsing step following the drain step.
  • the rinsing step is a step in which the detergent and the dirt removed in the tank cleaning step are peeled off from the wall of the water tank 2 and the drum 3 and washed away.
  • the control unit 22 opens the water supply valve 9 to supply water into the water tank 2.
  • the water level to be supplied is set to “high”, which is higher than the water level “low” at the time of the tank cleaning step.
  • the control unit 22 closes the water supply valve 9.
  • the lower portion of the drum 3 is fully immersed in the water.
  • the control unit 22 does not operate the detergent introduction device 10 and does not supply the laundry detergent into the water tub 2. Therefore, the water supplied into the water tank 2 is tap water.
  • the control unit 22 controls the drum 3 with the rotation control S3 while the drum 3 is immersed in water.
  • the rotation control S3 is, for example, an operation of controlling to rotate leftward at 120 rpm for one minute and then rotate rightward at 100 rpm for one minute.
  • the water in the water tank 2 that has been increased to the water level “high” by the water supply is wound upward by the high-speed rotation of the drum 3 and reaches the inner surface on the upper side of the water tank 2.
  • the control unit 22 drives the pump 17. Thereby, the water in the water tank 2 flows and circulates through the circulation channel 16. As a result, dirt and detergent such as bacteria, mold, biofilm and the like, which have been killed in the tank washing step and adhere to the wall surface in the circulation water channel 16 are washed away.
  • control unit 22 executes the above-described rinsing step for a predetermined period of time (for example, 30 minutes).
  • control unit 22 executes a drain step following the rinsing step.
  • the control unit 22 first opens the drain valve 13. As a result, the water in the water tank 2 and the circulation channel 16 including the dirt washed out in the rinsing step is drained out of the machine.
  • control unit 22 rotates the drum 3 at a high speed (for example, 300 rpm) for a short time, as shown in FIG. As a result, water droplets and the like adhering to the drum 3 are blown into the water tank 2 by centrifugal force, and are discharged out of the machine via the drain path 12. Then, the tank cleaning operation ends.
  • a high speed for example, 300 rpm
  • the washing machine includes the drum 3 rotatably provided in the water tub 2, the motor 7 for driving the drum 3 to rotate, the water supply valve 9 for supplying water to the water tub 2, the water tub 2 A drain valve 13 for draining water in the tank, a heater 19 for heating water stored in the water tank 2, a temperature detection unit 21 for detecting the temperature of water in the water tank 2, and controlling a washing operation and a tub washing operation.
  • the control unit 22 is included. In the tub washing operation, the control unit 22 supplies water into the tub 2 by the water supply valve 9, supplies the laundry detergent into the tub 2, and heats the water stored in the tub 2 by the heater 19. Further, when the temperature detecting section 21 detects that the water in the water tank 2 has been heated to a predetermined temperature by the temperature detecting section 21, the control section 22 drives the drum 3 to rotate and agitates the water in the water tank 2. .
  • the water containing the laundry detergent is stirred in a state where the water temperature is raised. Thereby, foaming of the laundry detergent is suppressed, and the tub can be washed with the laundry detergent without using a dedicated detergent for washing the tub.
  • the washing machine of the first embodiment includes a circulating water passage 16 provided to guide water in water tub 2 from the bottom of water tub 2 into drum 3, and a pump 17 for circulating water in water tub 2 through circulating water passage 16.
  • the control part 22 is comprised so that the pump 17 may be driven and the water in the water tank 2 may be circulated through the circulation water channel 16 in the tank cleaning operation.
  • the heated water is caused to flow through the circulation channel 16 to kill bacteria and fungi that live in the circulation channel 16. Further, dirt such as dead bacteria, mold and biofilm is peeled off from the circulation channel 16 and discharged outside the machine. This makes it possible to clean the inner surface of the piping around the water such as the circulating water passage 16 where the humidity is high and it is likely to be a habitat for bacteria and mold. As a result, in the next washing operation, re-adhesion of dirt to clothes can be suppressed.
  • Embodiment 2 a washing machine according to Embodiment 2 of the present invention will be described with reference to FIG.
  • the washing machine according to the second embodiment differs from the washing machine according to the first embodiment in that a washing detergent is added after the water in the water tub 2 is heated to a predetermined temperature in a tub washing step of the tub washing operation. different. Since other configurations are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and the detailed description uses the first embodiment.
  • FIG. 5 is a time chart showing the operation of the washing machine in the tub washing operation in Embodiment 2 of the present invention.
  • the tank cleaning operation according to the second embodiment includes, as in the first embodiment, a tank cleaning step, a drain step, a rinsing step, a drain step, and the like, and is sequentially executed.
  • the water supply valve 9 is opened. Thereby, the water supplied from the tap water flows through the water supply pipe 8, and is supplied into the water tank 2 via the detergent introduction device 10 and the water supply passage 11. At this time, although the detergent for washing is previously introduced into the detergent introducing device 10, the control unit 22 controls the detergent stored in the water tub 2 until the water is heated to a predetermined temperature (set temperature T1). The charging device 10 is not operated. Therefore, at the initial stage of water supply, the laundry detergent is not supplied into the water tub 2 and only water is supplied.
  • the control unit 22 detects that the water level is “low” by the water amount detection unit 20, the control unit 22 energizes the heater 19 to heat the water at the temperature T0 stored in the bottom of the water tank 2.
  • the control unit 22 drives the drum 3 to rotate under the rotation control S1.
  • the peripheral side surface of the drum 3 is heated by the hot water.
  • the rotation of the drum 3 agitates the heated water, thereby promoting the generation of steam. That is, the drum 3 is driven to rotate while the temperature of the water in the water tank 2 is increased by heating. Therefore, the inside of the water tank 2 can be quickly heated from the stage where the inside of the water tank 2 is at a low temperature.
  • the laundry detergent is not put into the water tub 2. Therefore, the rotation speed of drum 3 can be set higher than that in the case where the laundry detergent according to the first embodiment is supplied. Therefore, in the second embodiment, the drum 3 is controlled not by the rotation control S0 but by the rotation control S1.
  • the rotation control S1 is a control operation for continuously driving at, for example, 40 rpm.
  • the controller 22 activates the detergent dispenser 10 and dispenses the laundry detergent into the water tub 2.
  • the control unit 22 simultaneously drives the drum 3 under the rotation control S2.
  • the rotation control S2 is a control operation that repeats, for example, “40 rpm, driving for 10 seconds, and stopping for 10 seconds”, as in the first embodiment.
  • the washing machine has the detergent charging device 10 for charging the laundry detergent into the water tub 2.
  • the control unit 22 is configured so that when the water stored in the water tub 2 is heated to a predetermined temperature, the detergent input device 10 inputs the laundry detergent.
  • the laundry detergent when the temperature of the water is low, the laundry detergent is not supplied, so that the foaming does not occur even when the drum 3 is driven to rotate while the temperature of the water is rising. Therefore, the water tank 2 and the drum 3 can be washed with the water being heated. In addition, the stirring time of the water stored in the water tank 2 by the rotation of the drum 3 can be increased. Therefore, the temperature in the water tank 2 can be efficiently raised during the temperature rise of the water.
  • the washing machine of the present invention has a washing tub rotatably provided in a water tub, a motor for driving the rotation of the washing tub, a water supply unit for supplying water to the water tub, and draining water in the water tub.
  • a heating unit that heats the water stored in the water tank, a temperature detection unit that detects the temperature of the water in the water tank, and a control unit that controls the washing operation and the tub cleaning operation.
  • the control unit performs the charging of the laundry detergent into the tub, the supply of water in the tub by the water supply unit, and the heating of the water stored in the tub by the heating unit.
  • the control unit is configured to, when the temperature detecting unit detects that the water in the water tub is heated to a predetermined temperature, rotate the washing tub and stir the water in the water tub.
  • the water containing the laundry detergent is stirred in a state where the water temperature is raised. Thereby, foaming of the laundry detergent is suppressed, and the tub can be washed with the laundry detergent without using a dedicated detergent for washing the tub.
  • the washing machine of the present invention also has a detergent feeding device for feeding a laundry detergent into a water tub. Then, it is desirable that the control unit inputs the laundry detergent by the detergent input device when the water stored in the water tub is heated to a predetermined temperature.
  • the laundry detergent when the water temperature is low, the laundry detergent is not supplied, so that the washing tub is not foamed even when the washing tub is driven to rotate while the temperature of the water is rising. Therefore, the water tub and the washing tub can be washed with the water being heated. Further, the stirring time of the water stored in the water tank can be increased. Therefore, the temperature in the water tank can be efficiently raised during the temperature rise.
  • the washing machine of the present invention has a circulating water channel that guides water in the water tub from the bottom of the water tub into the washing tub, and a pump that circulates the water in the water tub through the circulating water channel. And it is desirable that the control unit drives the pump in the tank cleaning operation to circulate the water in the water tank through the circulation water channel.
  • the heated water can be flown into the circulation channel to kill bacteria and fungi that live in the circulation channel. Further, dirt such as dead bacteria, mold, biofilm and the like can be peeled off from the circulation channel and discharged out of the machine. This makes it possible to clean the inner surface of the piping around the water, which is likely to be a habitat for bacteria and mold due to high humidity. As a result, in the next washing operation, re-adhesion of dirt to clothes can be suppressed.
  • the tub can be washed using a laundry detergent. Therefore, it is useful for a washing machine or the like in which running cost and the like are desired to be suppressed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

This washing machine comprises: a drum (3) provided in a water tank (2); a motor (7) that drives the drum (3); a water supply valve (9) for supplying water to the water tank (2); a water discharge valve (13) for discharging washing water in the washing tank (2); a heater (19) that heats the water in the water tank (2); a temperature detection unit (21) that detects the temperature of the water in the water tank (2); and a control unit (22) that controls a washing operation and a tank washing operation. The control unit (22) during the tank washing operation performs: loading of washing detergent into the water tank (2); supplying of water to the water tank (2) by means of the water supply valve (9); and heating of the water in the water tank (2) by means of the heater (19). When the temperature detection unit (21) has detected that the water in the water tank (2) has been heated to a predetermined temperature, the drum (3) is rotationally controlled and the water in the water tank (2) is stirred. In this way, it is possible to perform tank washing using the washing detergent for washing clothes and the like.

Description

洗濯機Washing machine
　本発明は、衣類などの洗濯を行う洗濯機に関する。 The present invention relates to a washing machine for washing clothes and the like.
　一般的に、洗濯機は、長期間の使用により、水槽の内面や洗濯槽の外面に、洗剤カスや汚れが堆積する。これにより、洗剤カスや汚れを、栄養源や生息場所として、菌やカビが繁殖する。そのため、洗濯後において、使用者が洗濯機内や衣類からの不快臭を感じる場合や、汚れの一部が洗濯した衣類に付着する場合がある。 Generally, in a washing machine, detergent scum and dirt accumulate on the inner surface of the water tub and the outer surface of the washing tub over a long period of use. As a result, fungi and fungi propagate using the detergent scum and dirt as nutrient sources and habitats. Therefore, after the washing, the user may feel an unpleasant odor in the washing machine or from the clothes, or a part of the dirt may adhere to the washed clothes.
　近年、上述の汚れを洗浄するために、槽洗浄コースを備えた洗濯機が考えられている。 In recent years, washing machines equipped with a tub washing course have been considered in order to wash the above-mentioned dirt.
　上記構成の洗濯機は、槽洗浄コースにおいて、洗濯槽には衣類などの洗濯物が入っていない。さらに、槽洗浄コースにおいて、洗濯用洗剤を使用すると、洗濯槽内に泡が発生し、洗濯槽を回転駆動させるモータに負荷がかかるため動力損失が生じる。また、洗濯機内の水の排水時において、洗濯槽内に泡が残留して、洗濯槽の汚れの原因になる。そこで、槽洗浄コースの初期において、洗濯槽に残留する洗剤の除去を行う構成の洗濯機が提案されている（例えば、特許文献１参照）。 洗濯 In the washing machine having the above configuration, in the washing tub course, the washing tub does not contain laundry such as clothes. Further, when a laundry detergent is used in the tub washing course, bubbles are generated in the washing tub, and a load is applied to a motor for rotating and driving the washing tub, resulting in power loss. In addition, when the water in the washing machine is drained, bubbles remain in the washing tub, which causes soiling of the washing tub. Therefore, a washing machine configured to remove the detergent remaining in the washing tub at the beginning of the tub washing course has been proposed (for example, see Patent Document 1).
　また、泡立ちを低減した洗濯槽用洗浄剤が提案されている（例えば、特許文献２参照）。 Also, a washing tub detergent with reduced foaming has been proposed (for example, see Patent Document 2).
　しかしながら、特許文献１に記載の洗濯機は、槽洗浄コースにおいて、運転初期に洗剤の除去を行うため、槽洗浄に洗剤の洗浄力を利用することができない。また、特許文献２の場合、槽洗浄時において、衣類の洗濯に用いる洗濯用洗剤とは別に、泡立ちを低減した槽洗浄用の専用洗剤を使用する必要がある。 However, the washing machine described in Patent Literature 1 does not use the cleaning power of the detergent for tub cleaning because the detergent is removed in the tub cleaning course at an early stage of operation. Further, in the case of Patent Literature 2, at the time of washing the tub, it is necessary to use a dedicated detergent for tub washing with reduced foaming, in addition to the laundry detergent used for washing clothes.
特表２００９－５０９６２３号公報JP-T-2009-509623 特開２００９－１４９７７５号公報JP 2009-149775 A
　本発明は、衣類などの洗濯に使用する洗濯用洗剤で槽洗浄が行える洗濯機を提供する。 The present invention provides a washing machine capable of washing a tub with a laundry detergent used for washing clothes and the like.
　本発明の洗濯機は、水槽内に回転可能に設けられる洗濯槽と、洗濯槽を回転駆動するモータと、水槽内に給水する給水部と、水槽内の水を排水する排水部と、水槽内に溜められる水を加熱する加熱部と、水槽内の水の温度を検知する温度検知部と、洗濯運転および槽洗浄運転を制御する制御部を含む。制御部は、槽洗浄運転において、水槽内に洗濯用洗剤の投入と、給水部よる水槽内の給水と、水槽内に溜められた水の加熱部による加熱と、を行う。さらに、制御部は、温度検知部によって水槽内の水が所定の温度に加熱されたことを検知すると、洗濯槽を回転制御し、水槽内の水を攪拌するように構成される。 A washing machine of the present invention includes a washing tub rotatably provided in a water tub, a motor for rotating and driving the washing tub, a water supply unit for supplying water to the water tub, a drainage unit for draining water in the water tub, A heating unit that heats the water stored in the tub, a temperature detection unit that detects the temperature of the water in the water tub, and a control unit that controls the washing operation and the tub cleaning operation. In the tub washing operation, the control unit performs the charging of the laundry detergent into the tub, the supply of water in the tub by the water supply unit, and the heating of the water stored in the tub by the heating unit. Further, the control unit is configured to, when the temperature detecting unit detects that the water in the water tub is heated to a predetermined temperature, control the rotation of the washing tub and stir the water in the water tub.
　この構成によれば、洗濯用洗剤が含まれる水を、水温が上昇した状態で攪拌する。これにより、洗剤の泡立ちを抑制して、洗濯用洗剤で槽洗浄が可能な洗濯機を提供できる。 According to this configuration, the water containing the laundry detergent is agitated while the water temperature is rising. Thus, it is possible to provide a washing machine that suppresses foaming of the detergent and can wash the tub with the laundry detergent.
図１は、本発明の実施の形態１における洗濯機の概略構成図である。FIG. 1 is a schematic configuration diagram of a washing machine according to Embodiment 1 of the present invention. 図２は、同洗濯機のブロック構成図である。FIG. 2 is a block diagram of the washing machine. 図３は、同洗濯機の槽洗浄運転時の動作を示すタイムチャートである。FIG. 3 is a time chart showing the operation of the washing machine during the tub washing operation. 図４は、同洗濯機の温度と除菌効果との関係を示すグラフである。FIG. 4 is a graph showing the relationship between the temperature of the washing machine and the sterilization effect. 図５は、本発明の実施の形態２における洗濯機の槽洗浄運転時の動作を示すタイムチャートである。FIG. 5 is a time chart showing an operation during a tub cleaning operation of the washing machine according to Embodiment 2 of the present invention.
　以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって、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. The present invention is not limited by the embodiment.
　（実施の形態１）
　以下、本発明の実施の形態１の洗濯機について、図１から図４を参照しながら、説明する。 (Embodiment 1)
Hereinafter, the washing machine according to the first embodiment of the present invention will be described with reference to FIGS.
　図１は、本発明の実施の形態１における洗濯機の概略構成図である。図２は、同洗濯機のブロック構成図である。図３は、同洗濯機の槽洗浄運転時の動作を示すタイムチャートである。図４は、同洗濯機の温度と除菌効果との関係を示すグラフである。 FIG. 1 is a schematic configuration diagram of a washing machine according to Embodiment 1 of the present invention. FIG. 2 is a block diagram of the washing machine. FIG. 3 is a time chart showing the operation of the washing machine during the tub washing operation. FIG. 4 is a graph showing the relationship between the temperature of the washing machine and the sterilization effect.
　なお、実施の形態１の洗濯機は、洗濯槽３であるドラム３の回転軸３ａが水平方向（傾斜を含む）に配設される、いわゆるドラム式洗濯機である。 The washing machine according to the first embodiment is a so-called drum type washing machine in which the rotating shaft 3a of the drum 3, which is the washing tub 3, is disposed in a horizontal direction (including an inclination).
　図１に示すように、実施の形態１の洗濯機は、筐体１と、筐体１内に弾性支持される水槽２などを含む。水槽２は、内部に、回転可能に設けられる洗濯槽３である有底円筒状のドラム３を含む。ドラム３は、回転軸３ａが、角度θ（例えば、１０度）の前上がり（図面の左上方向）に傾斜して配設される。 As shown in FIG. 1, the washing machine according to the first embodiment includes a housing 1, a water tub 2 elastically supported in the housing 1, and the like. The water tub 2 includes a cylindrical drum 3 with a bottom, which is a washing tub 3 rotatably provided inside. The drum 3 is arranged such that the rotating shaft 3a is inclined forward (upper left in the drawing) by an angle θ (for example, 10 degrees).
　なお、以下では、図中に示す、扉２５側を前方、モータ７側を後方、洗剤投入装置１０側を上方、排水経路１２側を下方と規定して説明する。 In the following description, the door 25 is defined as the front, the motor 7 is defined as the rear, the detergent injection device 10 is defined as the upper side, and the drainage channel 12 is defined as the lower side.
　ドラム３は、内周側面に、ドラム３の回転中心に向かって内方へ突出する複数のバッフル４と、水槽２内と連通する多数の小孔５を含む。さらに、ドラム３は、前面側に設けられる開口部６を含む。使用者は、開口部６を介して、衣類などの洗濯物（以下、「被洗浄物」と記す場合がある）のドラム３への投入と、ドラム３からの取り出しを行うことができる。 The drum 3 includes a plurality of baffles 4 protruding inward toward the rotation center of the drum 3 and a number of small holes 5 communicating with the inside of the water tank 2 on the inner peripheral side surface. Further, the drum 3 includes an opening 6 provided on the front side. Through the opening 6, the user can load laundry such as clothes (hereinafter sometimes referred to as “substance to be washed”) into the drum 3 and take it out of the drum 3.
　水槽２は、後面に取り付けられ、ドラム３を回転駆動するモータ７を備える。モータ７は、インバータ制御される、例えばブラシレス直流モータで構成される。モータ７は、インバータ制御により、回転速度が可変自在に駆動される。 The water tank 2 is provided on the rear surface and includes a motor 7 for driving the drum 3 to rotate. The motor 7 is an inverter-controlled, for example, a brushless DC motor. The rotation speed of the motor 7 is variably driven by inverter control.
　水槽２内に洗濯水を給水する給水配管８は、例えば水道の蛇口（図示せず）に接続され、給水部である給水弁９を含む。給水配管８は、洗剤を投入する洗剤投入装置１０と連通接続される。洗剤投入装置１０は、給水路１１を介して、水槽２と連通接続される。これにより、洗濯水は、給水配管８から洗剤投入装置１０および給水路１１を流れて、水槽２内に給水される。なお、洗濯水は、洗剤が溶け込んだ水だけでなく、単なる水の意味も含む。 The water supply pipe 8 for supplying the washing water into the water tub 2 is connected to, for example, a faucet (not shown) of the water supply and includes a water supply valve 9 which is a water supply unit. The water supply pipe 8 is connected in communication with a detergent introduction device 10 for introducing a detergent. The detergent introduction device 10 is connected to the water tank 2 through a water supply channel 11. Thus, the washing water flows from the water supply pipe 8 through the detergent introduction device 10 and the water supply passage 11 and is supplied into the water tub 2. The washing water includes not only water in which the detergent is dissolved but also mere water.
　排水経路１２は、排水部である排水弁１３と、排水フィルター１４などを含む。 The drainage path 12 includes a drainage valve 13 which is a drainage part, a drainage filter 14, and the like.
　水槽２内に給水された洗濯水は、排水弁１３が開かれると、水槽２の底部に設けられる排水口１５から、排水フィルター１４、排水弁１３および排水経路１２を経由して、機外へ排出される。排水フィルター１４は、洗濯中において、洗濯水が循環する位置に配設され、例えば被洗浄物から外れたボタンなどを捕集する。排水フィルター１４は、筐体１の前面側から脱着可能に配設される。 When the drain valve 13 is opened, the washing water supplied into the water tub 2 is discharged from the drain port 15 provided at the bottom of the water tub 2 through the drain filter 14, the drain valve 13 and the drain path 12 to the outside of the machine. Is discharged. The drain filter 14 is disposed at a position where the washing water circulates during washing, and collects, for example, a button that has come off the object to be washed. The drain filter 14 is provided detachably from the front side of the housing 1.
　循環水路１６は、水槽２の排水口１５から水槽２内の前部に位置するドラム３の開口部６側へ、水槽２内の洗濯水を導くように配設される。循環水路１６は、洗濯水を循環させるポンプ１７と、吐出口１８などを含む。ポンプ１７は、筐体１内の底部に設置され、排水フィルター１４の下流側に配設される。ポンプ１７の駆動により、水槽２内の洗濯水が、ドラム３内に向けて、吐出口１８から吐出される。 The circulation water channel 16 is provided so as to guide the washing water in the water tub 2 from the drain port 15 of the water tub 2 to the opening 6 side of the drum 3 located in the front part of the water tub 2. The circulation channel 16 includes a pump 17 for circulating washing water, a discharge port 18, and the like. The pump 17 is installed at the bottom in the housing 1 and is arranged downstream of the drain filter 14. By driving the pump 17, the washing water in the water tub 2 is discharged from the discharge port 18 toward the inside of the drum 3.
　ヒータ１９は、水槽２に溜められる水を加熱する加熱部を構成し、水槽２内の底部近傍に配設される。ヒータ１９は、水槽２内に所定量の水が溜められると、水没する位置に配設される。 The heater 19 constitutes a heating unit for heating water stored in the water tank 2, and is disposed near the bottom in the water tank 2. The heater 19 is provided at a position where the heater 19 is submerged when a predetermined amount of water is stored in the water tank 2.
　水量検知部２０は、水槽２内に給水される洗濯水の量を検知する。温度検知部２１は、水槽２の排水口１５近傍に配設され、水槽２内の水の温度を検知する。なお、温度検知部２１は、例えばサーミスタなどで構成される。 Water amount detector 20 detects the amount of washing water supplied into water tub 2. The temperature detector 21 is disposed near the drain 15 of the water tank 2 and detects the temperature of water in the water tank 2. In addition, the temperature detection unit 21 is configured by, for example, a thermistor.
　布量検知部２３は、ドラム３内に投入される被洗浄物の量を検知する。回転検知部２４は、ドラム３の、例えば回転数などの駆動量を検知する。 (4) The cloth amount detection unit 23 detects the amount of the object to be washed put into the drum 3. The rotation detecting unit 24 detects a driving amount of the drum 3, such as a rotation speed.
　制御部２２は、筐体１内に配設され、入力される情報に基づいて、各種構成要素を制御して、洗濯運転および槽洗浄運転などを実行する。 The control unit 22 is disposed in the housing 1 and controls various components based on input information to execute a washing operation, a tub washing operation, and the like.
　具体的には、制御部２２は、図２に示すように、布量検知部２３で検知した被洗浄物の量と、水量検知部２０で検知した洗濯水の量と、温度検知部２１で検知した水の温度と、回転検知部２４で検知したドラム３の駆動量（例えば、回転数）などが、情報として入力される。 Specifically, as shown in FIG. 2, the control unit 22 controls the amount of the washing target detected by the cloth amount detection unit 23, the amount of the washing water detected by the water amount detection unit 20, and the temperature detection unit 21. The detected water temperature, the driving amount (for example, the number of rotations) of the drum 3 detected by the rotation detecting unit 24, and the like are input as information.
　そして、制御部２２は、それらの入力情報に基づいて、モータ７、給水弁９、排水弁１３、ポンプ１７、ヒータ１９などを制御し、洗いステップ、すすぎステップ、脱水ステップなどを逐次制御して、洗濯運転を実行する。 Then, the control unit 22 controls the motor 7, the water supply valve 9, the drain valve 13, the pump 17, the heater 19, and the like based on the input information, and sequentially controls a washing step, a rinsing step, a dehydration step, and the like. Perform a washing operation.
　さらに、制御部２２は、後述する槽洗浄運転を実行し、水槽２、ドラム３および循環水路１６などを洗浄する。 制 御 Furthermore, the control unit 22 executes a tank cleaning operation to be described later, and cleans the water tank 2, the drum 3, the circulation water passage 16, and the like.
　なお、洗濯機の使用時において、使用者は、まず、筐体１の前面に開閉自在に設けられた扉２５を開く。これにより、ドラム３の前面側に設けられたドラム３の開口部６から被洗浄物の出し入れが可能となる。 When using the washing machine, the user first opens the door 25 provided on the front surface of the housing 1 so as to be openable and closable. As a result, the object to be cleaned can be taken in and out through the opening 6 of the drum 3 provided on the front side of the drum 3.
　操作表示部２６は、筐体１の前面側の上部に配設される。使用者は、操作表示部２６を介して、洗濯機を運転するための設定を入力できる。さらに、操作表示部２６は、洗濯機の設定内容および運転状況などを表示する。これにより、使用者は、設定内容および運転状況などを把握できるとともに、必要に応じて、設定内容の訂正などを行うことができる。 The operation display unit 26 is provided at the upper part on the front side of the housing 1. The user can input settings for operating the washing machine via the operation display unit 26. Further, the operation display unit 26 displays the setting contents and the operation status of the washing machine. As a result, the user can grasp the setting contents and the driving conditions, and can correct the setting contents as necessary.
　以上のように、実施の形態１の洗濯機は構成される。 As described above, the washing machine of the first embodiment is configured.
　以下、上記洗濯機の洗濯運転および槽洗浄運転における動作および作用について、図１から図４を参照しながら、説明する。 Hereinafter, the operation and action of the washing machine in the washing operation and the tub washing operation will be described with reference to FIGS.
　最初に、被洗浄物である洗濯物を洗う洗濯運転における動作および作用について、説明する。 First, the operation and action in the washing operation for washing the laundry to be washed will be described.
　洗濯運転において、使用者は、扉２５を開いて、開口部６からドラム３内に被洗浄物を投入する。 に お い て In the washing operation, the user opens the door 25 and throws the article to be washed into the drum 3 through the opening 6.
　つぎに、使用者は、操作表示部２６の電源スイッチ（図示せず）をオン（ＯＮ）し、スタートスイッチ（図示せず）を、例えば押下操作する。これにより、洗いステップ、すすぎステップおよび脱水ステップなどを含む洗濯運転が、順次、開始される。 Next, the user turns on a power switch (not shown) of the operation display unit 26 and presses a start switch (not shown), for example. Thereby, the washing operation including the washing step, the rinsing step, the dehydration step, and the like is sequentially started.
　洗濯運転では、初めに、洗いステップが実行される。 で は In the washing operation, first, a washing step is executed.
　洗いステップを開始すると、制御部２２は、まず、ドラム３内に投入された被洗浄物の量（例えば、重量）を、布量検知部２３で検知する。具体的には、布量検知部２３は、モータ７でドラム３を回転駆動する際に、モータ７にかかるトルク量や、モータ７の電流値などから被洗浄物の量を検知する。 When the washing step is started, the controller 22 first detects the amount (for example, the weight) of the object to be washed put into the drum 3 by the cloth amount detector 23. Specifically, the cloth amount detection unit 23 detects the amount of the object to be cleaned from the amount of torque applied to the motor 7 and the current value of the motor 7 when the motor 7 rotates the drum 3.
　つぎに、制御部２２は、布量検知部２３で検知した被洗浄物の量に応じて、水槽２内に供給する水量を設定する。また、制御部２２は、洗いステップ、すすぎステップおよび脱水ステップなどの各ステップを実行する時間を設定する。さらに、制御部２２は、被洗浄物の量に応じて、予め設定された洗剤量から、目安となる洗剤量を決定し、操作表示部２６に表示する。このとき、洗濯用洗剤は、使用者が予め洗剤投入装置１０内の洗剤容器（図示せず）に入れておく。 Next, the control unit 22 sets the amount of water to be supplied into the water tank 2 according to the amount of the object to be cleaned detected by the cloth amount detection unit 23. Further, the control unit 22 sets a time for executing each step such as a washing step, a rinsing step, and a dehydration step. Further, the control unit 22 determines a guideline detergent amount from a preset detergent amount according to the amount of the object to be cleaned, and displays the detergent amount on the operation display unit 26. At this time, the user puts the laundry detergent in a detergent container (not shown) in the detergent feeding device 10 in advance.
　つぎに、制御部２２は、投入された被洗浄物の量に応じて、洗剤容器内の洗剤を、チューブポンプ（図示せず）により、水槽２内に適量、自動で注入する。 Next, the control unit 22 automatically injects an appropriate amount of the detergent in the detergent container into the water tank 2 by a tube pump (not shown) in accordance with the amount of the object to be washed.
　具体的には、制御部２２は、給水弁９を開く。これにより、水道から供給される水が、洗剤投入装置１０を経由し、注入された洗剤とともに洗濯水として給水路１１を流れて水槽２内に給水される。このとき、排水弁１３が閉じられているため、洗濯水は、水槽２内の底部に溜まる。水槽２内に溜まった洗濯水は、ドラム３の外周側面の小孔５から、ドラム３内に流入する。 Specifically, the control unit 22 opens the water supply valve 9. As a result, the water supplied from the tap water flows through the water supply path 11 as the washing water together with the injected detergent via the detergent injection device 10 and is supplied into the water tank 2. At this time, since the drain valve 13 is closed, the washing water collects at the bottom in the water tub 2. The washing water accumulated in the water tub 2 flows into the drum 3 from the small holes 5 on the outer peripheral side surface of the drum 3.
　なお、使用者の設定により、洗剤の自動投入を実施せず、操作表示部２６に表示された洗剤量の目安にしたがって洗濯用洗剤を、使用者が手動で投入してもよい。 Note that, according to the setting of the user, the user may manually input the laundry detergent according to the standard of the detergent amount displayed on the operation display unit 26 without performing the automatic injection of the detergent.
　つぎに、制御部２２は、水槽２内に給水された水量を、水量検知部２０で検知する。そして、制御部２２は、被洗浄物の量に応じて、設定された水量が給水されると、給水弁９を閉じる。このとき、制御部２２は、給水中に、被洗浄物がドラム３の中で転動するように、モータ７により、例えば回転数２０ｒｐｍで、ドラム３を一方向に回転駆動する。これにより、被洗浄物への洗濯水の浸透が、加速される。このとき、洗濯水の被洗浄物への吸水により、一般的に、水槽２内の水量が設定水位から低下する。そこで、制御部２２は、再度、給水弁９を開いて、水槽２内に、低下した量の水を補給し、設定水位に戻す。なお、設定水位から低下しない場合は、この限りではない。 Next, the control unit 22 detects the amount of water supplied into the water tank 2 with the water amount detection unit 20. Then, the control unit 22 closes the water supply valve 9 when the set amount of water is supplied according to the amount of the object to be cleaned. At this time, the control unit 22 drives the drum 3 to rotate in one direction by the motor 7 at a rotation speed of, for example, 20 rpm so that the cleaning target rolls in the drum 3 during water supply. Thereby, the penetration of the washing water into the object to be washed is accelerated. At this time, the amount of water in the water tub 2 generally drops from the set water level due to the absorption of the washing water into the object to be washed. Therefore, the control unit 22 opens the water supply valve 9 again, replenishes the water tank 2 with a reduced amount of water, and returns to the set water level. Note that this does not apply if the water level does not drop from the set water level.
　つぎに、給水が終わると、制御部２２は、ポンプ１７を駆動する。これにより、水槽２内の底部に溜まった洗濯水が、排水口１５から循環水路１６へ導かれる。循環水路１６へ導かれた洗濯水は、循環水路１６内を流れる。そして、循環水路１６の吐出口１８から、ドラム３内へ吐出される。吐出された洗濯水は、ドラム３の小孔５から水槽２内に流出し、再び、排水口１５から循環水路１６を通る経路で循環する。これにより、洗浄水が、被洗浄物に充分浸透する。 Next, when the water supply is completed, the control unit 22 drives the pump 17. As a result, the washing water accumulated at the bottom in the water tub 2 is guided from the drain port 15 to the circulation channel 16. The washing water guided to the circulation channel 16 flows through the circulation channel 16. Then, the fluid is discharged from the discharge port 18 of the circulation water channel 16 into the drum 3. The discharged washing water flows out of the small hole 5 of the drum 3 into the water tub 2 and circulates again from the drain port 15 through the circulation channel 16. As a result, the cleaning water sufficiently permeates the object to be cleaned.
　つぎに、制御部２２は、いわゆる被洗浄物の叩き洗いを実行する。具体的には、叩き洗いは、モータ７により、ドラム３を所定の回転数（例えば、４２ｒｐｍ）で、所定時間（例えば、１５秒）毎に、交互に、正逆回転駆動することにより実行される。叩き洗いにおいて、被洗浄物は、まず、バッフル４によって、ドラム３の回転方向へ持ち上げられる。その後、被洗浄物は、持ち上げられたドラム３内の上部から落下する。これにより、被洗浄物の洗浄が行われる。 Next, the control unit 22 executes so-called slap washing of the object to be cleaned. Specifically, the tap washing is performed by alternately rotating the drum 3 forward and reverse at predetermined rotation speeds (for example, 42 rpm) by the motor 7 at predetermined rotation speeds (for example, 15 seconds). You. In the tap washing, the object to be cleaned is first lifted by the baffle 4 in the rotation direction of the drum 3. Thereafter, the object to be washed falls from the upper portion in the lifted drum 3. Thereby, the object to be cleaned is cleaned.
　そして、制御部２２は、洗いステップを、設定された所定時間（例えば、１０分）、実行する。その後、制御部２２は、排水弁１３を開いて、洗濯水を洗濯機から機外へ排出する。これにより、洗濯運転の洗いステップが終了する。 制 御 Then, the control unit 22 executes the washing step for a set predetermined time (for example, 10 minutes). Thereafter, the control unit 22 opens the drain valve 13 and discharges the washing water from the washing machine to the outside of the machine. Thereby, the washing step of the washing operation ends.
　つぎに、制御部２２は、洗いステップの終了後、すすぎステップ、脱水ステップの順に実行する。そして、制御部２２は、洗濯運転を終了する。すすぎステップ、脱水ステップの詳細な説明は省略する。 Next, after the washing step is completed, the control unit 22 executes the rinsing step and the dehydrating step in this order. Then, the control unit 22 ends the washing operation. Detailed description of the rinsing step and the dehydration step is omitted.
　なお、上述の洗濯水は、洗濯機で使用される水の総称である。つまり、洗濯水は、洗濯機に給水される洗剤を含まない水や、投入された洗剤などを含む洗い水、すすぎステップで洗剤成分および汚れなどを洗い流す、すすぎ水などを含む。 洗濯 The above-mentioned washing water is a general term for water used in washing machines. That is, the washing water includes detergent-free water supplied to the washing machine, washing water containing the supplied detergent, and rinsing water for washing away detergent components and dirt in the rinsing step.
　以下、洗濯機の槽洗浄運転について、図３を参照しながら、説明する。 Hereinafter, the tub washing operation of the washing machine will be described with reference to FIG.
　なお、槽洗浄運転は、上記洗濯運転とは別に実行される、水槽２、ドラム３および循環水路１６などを洗浄する運転動作である。 The tub washing operation is an operation that is performed separately from the washing operation to wash the water tank 2, the drum 3, the circulation water passage 16, and the like.
　具体的には、槽洗浄運転は、図３に示すように、槽洗浄ステップ、排水ステップ、すすぎステップ、排水ステップなどの各ステップで構成され、順に実行される。 Specifically, as shown in FIG. 3, the tank cleaning operation includes steps such as a tank cleaning step, a draining step, a rinsing step, and a draining step, which are sequentially executed.
　槽洗浄運転において、使用者は、まず、操作表示部２６の電源スイッチ（図示せず）を入れ、槽洗浄運転を設定する。設定した後、使用者は、スタートスイッチ（図示せず）を、例えば押下操作する。これにより、槽洗浄運転が開始される。 に お い て In the tank cleaning operation, the user first turns on the power switch (not shown) of the operation display unit 26 and sets the tank cleaning operation. After the setting, the user presses, for example, a start switch (not shown). Thereby, the tank cleaning operation is started.
　槽洗浄運転では、初めに、槽洗浄ステップが実行される。 In the tank cleaning operation, first, a tank cleaning step is performed.
　制御部２２は、槽洗浄ステップが開始されると、給水弁９を開く。これにより、水道から供給される水が、洗剤投入装置１０を経由して、水槽２内に給水される。このとき、洗濯運転の洗いステップ時と同様に、洗濯用洗剤が、水槽２内に投入される。そして、水槽２内の底部に溜まった水は、ドラム３の外周側面の小孔５から、ドラム３内に流入する。 When the tank cleaning step is started, the control unit 22 opens the water supply valve 9. Thereby, the water supplied from the tap water is supplied into the water tank 2 via the detergent introduction device 10. At this time, the detergent for washing is put into the water tub 2 as in the washing step of the washing operation. The water collected at the bottom of the water tank 2 flows into the drum 3 from the small holes 5 on the outer peripheral side surface of the drum 3.
　つぎに、制御部２２は、水槽２内に給水された水量を、水量検知部２０で検知する。このとき、実施の形態１の槽洗浄運転の各ステップにおいて、給水される水量は、例えば水位「低」、「高」の２段階に設定され、槽洗浄ステップにおいては、水位「低」に設定される。つまり、水量検知部２０が、所定の水位「低」を検知すると、制御部２２は、給水弁９を閉じる。水位「低」は、給水された水にヒータ１９が水没し、ドラム３の下部が水に接触する量に相当する。 Next, the control unit 22 detects the amount of water supplied into the water tank 2 with the water amount detection unit 20. At this time, in each step of the tank cleaning operation of the first embodiment, the amount of water supplied is set to, for example, two levels of a water level “low” and “high”, and in the tank cleaning step, the water level is set to “low”. Is done. That is, when the water amount detection unit 20 detects the predetermined water level “low”, the control unit 22 closes the water supply valve 9. The water level “low” corresponds to the amount of the heater 19 submerged in the supplied water and the lower part of the drum 3 contacting the water.
　なお、使用者は、洗剤の種類（例えば、粉末または液体など）に応じて、洗濯用洗剤の投入量を、予め洗剤投入装置１０に設定してもよい。 The user may set the amount of the laundry detergent to be supplied to the detergent supply device 10 in advance according to the type of the detergent (eg, powder or liquid).
　つぎに、制御部２２は、給水後、ヒータ１９に通電して、水槽２の底部に溜められた、温度Ｔ０の水を、設定温度Ｔ１まで加熱する。具体的には、制御部２２は、温度検知部２１の出力（検知温度）に基づいて、ヒータ１９への通電量などを制御する。これにより、加熱に伴って水が蒸発し、水槽２内に蒸気が発生する。このとき、ドラム３の下部は加熱された温水に接触しているため、ドラム３が温水で、直接加熱される。その結果、質量および熱容量の大きいドラム３が効率よく加熱されて、水槽２内の温度を、迅速に上昇させることができる。 Next, after supplying water, the control unit 22 energizes the heater 19 to heat the water at the temperature T0 stored at the bottom of the water tank 2 to the set temperature T1. Specifically, the control unit 22 controls the amount of power to the heater 19 and the like based on the output (detected temperature) of the temperature detection unit 21. Thereby, water evaporates with heating, and steam is generated in the water tank 2. At this time, since the lower part of the drum 3 is in contact with the heated warm water, the drum 3 is directly heated by the warm water. As a result, the drum 3 having a large mass and a large heat capacity is efficiently heated, and the temperature in the water tank 2 can be quickly increased.
　つぎに、制御部２２は、ヒータ１９への通電とほぼ同時に、ドラム３を、回転制御Ｓ０で回転駆動する。これにより、ドラム３の周側面などが温水で加熱される。また、ドラム３の回転により、温水が攪拌され、蒸気の発生が促進される。つまり、ドラム３は、水槽２内の水の加熱による昇温中に、回転駆動される。そのため、水槽２内が低温の段階から水槽２内を素早く加熱できる。 Next, the control unit 22 drives the drum 3 to rotate at the rotation control S0 almost simultaneously with energization of the heater 19. Thus, the peripheral side surface of the drum 3 is heated by the hot water. In addition, the rotation of the drum 3 stirs the hot water, thereby promoting the generation of steam. That is, the drum 3 is driven to rotate while the temperature of the water in the water tank 2 is increased by heating. Therefore, the inside of the water tank 2 can be quickly heated from a low temperature stage.
　このとき、洗濯運転の洗いステップ時と比べて、ドラム３の回転数が高いと、洗剤の泡立ちが発生し易い。しかし、洗いステップ時は、ドラム３内に衣類などの洗濯物が投入されている。そのため、洗剤の界面活性剤が洗濯物に吸着され、洗剤の泡立ちが抑制される。これに対して、槽洗浄運転においては、ドラム３内に洗濯物が投入されていない状態で、ドラム３が回転される。そのため、ドラム３の回転に伴って、洗剤の界面活性剤による泡立ちが激しくなる。そこで、槽洗浄運転においては、図３に示すように、ドラム３を回転制御Ｓ０で駆動する。回転制御Ｓ０は、例えば「２０ｒｐｍ、５秒駆動と、停止２５秒」を繰り返す制御動作である。 At this time, when the rotation speed of the drum 3 is higher than in the washing step of the washing operation, foaming of the detergent is likely to occur. However, at the time of the washing step, laundry such as clothes is loaded in the drum 3. Therefore, the surfactant of the detergent is adsorbed on the laundry, and foaming of the detergent is suppressed. On the other hand, in the tub washing operation, the drum 3 is rotated in a state where the laundry is not put in the drum 3. For this reason, as the drum 3 rotates, the detergent foams more frequently due to the surfactant. Therefore, in the tank cleaning operation, the drum 3 is driven by the rotation control S0 as shown in FIG. The rotation control S0 is a control operation that repeats, for example, “20 rpm, driving for 5 seconds, stopping 25 seconds”.
　つぎに、制御部２２は、水温が設定温度Ｔ１に到達したことを温度検知部２１で検知すると、設定温度Ｔ１付近の温度を所定時間維持するようにヒータ１９を制御する。例えば、設定温度Ｔ１が６０℃の場合、制御部２２は、水温が６０℃に到達するとヒータ１９をＯＦＦする。そして、水温が低下して５９℃になると、制御部２２は、再び、ヒータ１９をＯＮにする。上記ＯＮ／ＯＦＦ制御を繰り返して、水温を設定温度Ｔ１である６０℃近傍に維持する。 Next, when the temperature detecting unit 21 detects that the water temperature has reached the set temperature T1, the control unit 22 controls the heater 19 so as to maintain the temperature near the set temperature T1 for a predetermined time. For example, when the set temperature T1 is 60 ° C., the control unit 22 turns off the heater 19 when the water temperature reaches 60 ° C. When the water temperature drops to 59 ° C., the control unit 22 turns on the heater 19 again. The above ON / OFF control is repeated to maintain the water temperature at around 60 ° C., which is the set temperature T1.
　また、水温が設定温度Ｔ１に到達すると、制御部２２は、ドラム３を回転制御Ｓ２で駆動する。回転制御Ｓ２は、例えば「４０ｒｐｍ、１０秒駆動と、停止１０秒」を繰り返す制御動作である。これにより、温水がドラム３の回転により攪拌される。その結果、攪拌される温水で、水槽２やドラム３などが効果的に洗浄される。 (4) When the water temperature reaches the set temperature T1, the control unit 22 drives the drum 3 by the rotation control S2. The rotation control S2 is a control operation that repeats, for example, “40 rpm, driving for 10 seconds, and stopping for 10 seconds”. Thereby, the hot water is stirred by the rotation of the drum 3. As a result, the water tank 2, the drum 3, and the like are effectively washed with the warm water being stirred.
　つまり、水槽２内を、蒸気や温水で加熱することで、水槽２内を除菌することができる。このとき、除菌のためには、水槽２内の温度を、５０℃以上９０℃以下に昇温させることが望ましい。なお、通常、カビや菌の除菌においては、高温であるほど有利である。しかし、設定温度Ｔ１を高温に設定すると、洗濯機の構造体である樹脂材料の耐熱温度に対する考慮が必要となる。さらに、水槽２内に供給された水を、高温の設定温度Ｔ１まで加熱するために、時間がかかる。そのため、より短時間で、かつ低温でも高温時と同じ効果を発現できるとの理由から、設定温度Ｔ１を、上記温度範囲に設定している。 In other words, the inside of the water tank 2 can be sterilized by heating the water tank 2 with steam or hot water. At this time, in order to remove bacteria, it is desirable to raise the temperature in the water tank 2 to 50 ° C. or more and 90 ° C. or less. In addition, in the eradication of mold and fungi, the higher the temperature, the more advantageous. However, when the set temperature T1 is set to a high temperature, it is necessary to consider the heat resistant temperature of the resin material that is the structure of the washing machine. Furthermore, it takes time to heat the water supplied into the water tank 2 to the high set temperature T1. Therefore, the set temperature T1 is set in the above-mentioned temperature range because the same effect can be exhibited in a shorter time and at a low temperature as at a high temperature.
　ここで、カビに対する加熱温度および保持時間と、除菌効果との関係について、図４を参照しながら、説明する。 Here, the relationship between the heating temperature and the holding time for the mold and the sterilization effect will be described with reference to FIG.
　図４は、カビに対する加熱温度および保持時間と除菌効果との関係を示すグラフである。図４に示す各加熱温度は、温度ａ＜温度ｂ＜温度ｃの、大小関係にある。具体的には、例えば、温度ａ＝４５℃、温度ｂ＝４８℃、温度ｃ＝５０℃である。 FIG. 4 is a graph showing the relationship between the heating temperature and the holding time for mold and the bactericidal effect. Each heating temperature shown in FIG. 4 has a magnitude relationship of temperature a <temperature b <temperature c. Specifically, for example, temperature a = 45 ° C., temperature b = 48 ° C., and temperature c = 50 ° C.
　図４に示すように、加熱温度が低温になるほど、カビや菌の死滅に要する時間が長くなる。つまり、生息しているカビや菌を、より短い時間で、かつ菌数を減少させるためには、加熱温度が高いほど有利であることが確認される。 (4) As shown in FIG. 4, the lower the heating temperature, the longer the time required for killing mold and fungi. In other words, it is confirmed that a higher heating temperature is more advantageous for reducing the number of bacteria and fungi inhabiting in a shorter time.
　例えば、菌数を１．０Ｅ＋０７から１．０Ｅ＋０５に減少させるのに要する時間を比較する。温度ａでは１０分超であるのに対して、温度ｃでは５分未満に短縮される。また、同じ保持時間で減少する菌数を比較する。保持時間０分から５分のあいだで、温度ａでは菌数が１．０Ｅ＋０７から１．０Ｅ＋０６程度に減少するのに対して、温度ｃでは菌数が１．０Ｅ＋０７から１．０Ｅ＋０２未満に減少する。そこで、実施の形態１では、設定温度Ｔ１として、上記５０℃に設定している。 For example, compare the time required to reduce the number of bacteria from 1.0E + 07 to 1.0E + 05. At the temperature a, it is more than 10 minutes, while at the temperature c, it is reduced to less than 5 minutes. In addition, the number of bacteria decreasing at the same retention time is compared. During the holding time of 0 to 5 minutes, the number of bacteria decreases from 1.0E + 07 to about 1.0E + 06 at the temperature a, whereas the number of bacteria decreases from 1.0E + 07 to less than 1.0E + 02 at the temperature c. Therefore, in the first embodiment, the set temperature T1 is set to the above-mentioned 50 ° C.
　そして、制御部２２は、図３に示すように、水温が設定温度Ｔ１に到達すると、ポンプ１７を駆動する。これにより、水槽２内の加熱された水が循環水路１６を流れて循環する。具体的には、加熱された水は、水槽２の底部の排水口１５から吸引され、排水フィルター１４を通過して、循環水路１６へ導かれる。循環水路１６へ流入した水は、吐出口１８からドラム３内へ吐出される。そして、ドラム３内へ吐出された水は、ドラム３の小孔５から水槽２内に流出し、再び、排水口１５から循環水路１６を通る経路で、循環する。 Then, as shown in FIG. 3, when the water temperature reaches the set temperature T1, the control unit 22 drives the pump 17. Thereby, the heated water in the water tank 2 flows and circulates through the circulation channel 16. Specifically, the heated water is sucked from the drain port 15 at the bottom of the water tank 2, passes through the drain filter 14, and is guided to the circulation channel 16. The water flowing into the circulation channel 16 is discharged from the discharge port 18 into the drum 3. Then, the water discharged into the drum 3 flows out of the small hole 5 of the drum 3 into the water tank 2 and circulates again from the drain port 15 through the circulation channel 16.
　これにより、循環水路１６の経路内に生息する菌やカビを死滅させる。その結果、経路内に生息する菌やカビを、より確実に除菌できる。このとき、ポンプ１７を低速で駆動し、菌やカビを温水と長時間、接触させることが好ましい。具体的には、温水が、循環水路１６の経路内を、滞留することなく、流れる程度の速度となるように、ポンプ１７を駆動することが好ましい。なお、ポンプ１７は、連続または間欠のいずれで駆動してもよい。 This kills bacteria and mold that live in the circulation channel 16. As a result, bacteria and fungi that live in the route can be more reliably eliminated. At this time, it is preferable that the pump 17 be driven at a low speed so that bacteria and mold come into contact with the warm water for a long time. Specifically, it is preferable to drive the pump 17 so that the hot water flows at a speed that allows the hot water to flow in the circulation water channel 16 without staying. The pump 17 may be driven continuously or intermittently.
　そして、制御部２２は、上記槽洗浄ステップを、予め設定された所定時間（例えば、設定温度Ｔ１に到達後、１０分）、実行し、ヒータ１９の通電を停止する。 {Circle around (2)} Then, the control unit 22 executes the bath cleaning step for a predetermined time set in advance (for example, 10 minutes after the temperature reaches the set temperature T1), and stops the energization of the heater 19.
　つぎに、制御部２２は、槽洗浄ステップに続いて、槽洗浄運転の排水ステップを実行する。 Next, following the tank cleaning step, the control unit 22 executes a drain step of the tank cleaning operation.
　排水ステップにおいては、制御部２２は、図３に示すように、排水弁１３を開く。これにより、水槽２内および循環水路１６内の汚れを含む水が、排水経路１２を通して、機外へ排出される。 In the drain step, the control unit 22 opens the drain valve 13 as shown in FIG. As a result, water containing dirt in the water tank 2 and the circulation water passage 16 is discharged to the outside of the machine through the drain passage 12.
　つぎに、制御部２２は、排水ステップに続いて、すすぎステップを実行する。 Next, the control unit 22 executes a rinsing step following the drain step.
　なお、すすぎステップは、槽洗浄ステップで投入した洗剤や、除去した汚れを、水槽２やドラム３の壁面から剥ぎ取り、洗い流すステップである。 The rinsing step is a step in which the detergent and the dirt removed in the tank cleaning step are peeled off from the wall of the water tank 2 and the drum 3 and washed away.
　具体的には、制御部２２は、図３に示すように、給水弁９を開いて、水槽２内に給水する。このとき、給水する水位は、上記槽洗浄ステップ時の水位「低」よりも高い、水位「高」に設定される。そして、水槽２内に所定水位「高」まで水が溜められると、制御部２２は、給水弁９を閉じる。これにより、ドラム３の下部が水に十分に浸かった状態となる。なお、このとき、制御部２２は、洗剤投入装置１０を作動させず、水槽２内に洗濯用洗剤を投入しない。したがって、水槽２内に給水される水は水道水である。 Specifically, as shown in FIG. 3, the control unit 22 opens the water supply valve 9 to supply water into the water tank 2. At this time, the water level to be supplied is set to “high”, which is higher than the water level “low” at the time of the tank cleaning step. Then, when water is stored in the water tank 2 to a predetermined water level “high”, the control unit 22 closes the water supply valve 9. As a result, the lower portion of the drum 3 is fully immersed in the water. At this time, the control unit 22 does not operate the detergent introduction device 10 and does not supply the laundry detergent into the water tub 2. Therefore, the water supplied into the water tank 2 is tap water.
　つぎに、制御部２２は、ドラム３が水に浸かった状態で、ドラム３を回転制御Ｓ３で制御する。回転制御Ｓ３は、例えば１２０ｒｐｍで左方向へ１分間回転後、１００ｒｐｍで右方向へ１分間で回転するように制御する動作である。このとき、給水により、水位「高」まで増加した水槽２内の水は、ドラム３の高速回転によって上方へ巻き上げられ、水槽２の上方側の内面まで到達する。 Next, the control unit 22 controls the drum 3 with the rotation control S3 while the drum 3 is immersed in water. The rotation control S3 is, for example, an operation of controlling to rotate leftward at 120 rpm for one minute and then rotate rightward at 100 rpm for one minute. At this time, the water in the water tank 2 that has been increased to the water level “high” by the water supply is wound upward by the high-speed rotation of the drum 3 and reaches the inner surface on the upper side of the water tank 2.
　つまり、槽洗浄ステップ後にすすぎステップを実行することにより、槽洗浄ステップで死滅した、水槽２の上面の菌やカビ、バイオフィルムなどの汚れが、巻き上げられた水で、水槽２やドラム３の壁面から剥がされる。その結果、水槽２の上面近傍に付着する、死滅した菌やカビ、バイオフィルムなどの汚れを、より確実に洗い流すことができる。 In other words, by performing the rinsing step after the tank cleaning step, dirt such as bacteria, mold, and biofilm on the upper surface of the water tank 2 that has died in the tank cleaning step is removed by the rolled-up water. Peeled from. As a result, dirt such as dead bacteria, mold, biofilm and the like attached to the vicinity of the upper surface of the water tank 2 can be more reliably washed away.
　また、制御部２２は、水量検知部２０で設定量の水位「高」を検知すると、ポンプ１７を駆動する。これにより、水槽２内の水が循環水路１６を流れて循環する。その結果、循環水路１６内の壁面に付着する、槽洗浄ステップで死滅した菌やカビ、バイオフィルムなどの汚れや洗剤が、洗い流される。 When the water level detection unit 20 detects the water level “high” of the set amount, the control unit 22 drives the pump 17. Thereby, the water in the water tank 2 flows and circulates through the circulation channel 16. As a result, dirt and detergent such as bacteria, mold, biofilm and the like, which have been killed in the tank washing step and adhere to the wall surface in the circulation water channel 16 are washed away.
　そして、制御部２２は、上記すすぎステップを、予め設定された所定時間（例えば、３０分）、実行する。 {Circle around (5)} Then, the control unit 22 executes the above-described rinsing step for a predetermined period of time (for example, 30 minutes).
　つぎに、制御部２２は、すすぎステップに続いて、排水ステップを実行する。 Next, the control unit 22 executes a drain step following the rinsing step.
　排水ステップにおいて、制御部２２は、まず、排水弁１３を開く。これにより、すすぎステップで洗い流された汚れを含む、水槽２内および循環水路１６内の水を、機外に排水する。 制 御 In the drain step, the control unit 22 first opens the drain valve 13. As a result, the water in the water tank 2 and the circulation channel 16 including the dirt washed out in the rinsing step is drained out of the machine.
　排水後、制御部２２は、図３に示すように、ドラム３を高速（例えば、３００ｒｐｍ）で、短時間、回転させる。これにより、ドラム３に付着している水滴などを遠心力で水槽２内に飛ばし、排水経路１２を介して機外へ排出する。そして、槽洗浄運転を終了する。 After draining, the control unit 22 rotates the drum 3 at a high speed (for example, 300 rpm) for a short time, as shown in FIG. As a result, water droplets and the like adhering to the drum 3 are blown into the water tank 2 by centrifugal force, and are discharged out of the machine via the drain path 12. Then, the tank cleaning operation ends.
　以上のように、実施の形態１の洗濯機は、水槽２内に回転可能に設けられるドラム３と、ドラム３を回転駆動するモータ７と、水槽２内に給水する給水弁９と、水槽２内の水を排水する排水弁１３と、水槽２内に溜められる水を加熱するヒータ１９と、水槽２内の水の温度を検知する温度検知部２１と、洗濯運転および槽洗浄運転を制御する制御部２２を含む。制御部２２は、槽洗浄運転において、給水弁９により水槽２内に給水し、水槽２内に洗濯用洗剤を投入するとともに、水槽２内に溜められた水をヒータ１９によって加熱する。さらに、制御部２２は、温度検知部２１によって水槽２内の水が所定の温度に加熱されたことを検知すると、ドラム３を回転駆動し、水槽２内の水を攪拌するように構成される。 As described above, the washing machine according to the first embodiment includes the drum 3 rotatably provided in the water tub 2, the motor 7 for driving the drum 3 to rotate, the water supply valve 9 for supplying water to the water tub 2, the water tub 2 A drain valve 13 for draining water in the tank, a heater 19 for heating water stored in the water tank 2, a temperature detection unit 21 for detecting the temperature of water in the water tank 2, and controlling a washing operation and a tub washing operation. The control unit 22 is included. In the tub washing operation, the control unit 22 supplies water into the tub 2 by the water supply valve 9, supplies the laundry detergent into the tub 2, and heats the water stored in the tub 2 by the heater 19. Further, when the temperature detecting section 21 detects that the water in the water tank 2 has been heated to a predetermined temperature by the temperature detecting section 21, the control section 22 drives the drum 3 to rotate and agitates the water in the water tank 2. .
　この構成によれば、洗濯用洗剤が含まれた水を、水温が上昇した状態で攪拌する。これにより、洗濯用洗剤の泡立ちを抑制して、槽洗浄用の専用洗剤を使用することなく、洗濯用洗剤で槽洗浄を行うことができる。 According to this configuration, the water containing the laundry detergent is stirred in a state where the water temperature is raised. Thereby, foaming of the laundry detergent is suppressed, and the tub can be washed with the laundry detergent without using a dedicated detergent for washing the tub.
　また、実施の形態１の洗濯機は、水槽２内の水を水槽２の底部からドラム３内へ導くように設けられる循環水路１６と、循環水路１６を通して水槽２内の水を循環させるポンプ１７と、を有する。そして、制御部２２は、槽洗浄運転において、ポンプ１７を駆動し、水槽２内の水を、循環水路１６を通して循環するように構成される。 Further, the washing machine of the first embodiment includes a circulating water passage 16 provided to guide water in water tub 2 from the bottom of water tub 2 into drum 3, and a pump 17 for circulating water in water tub 2 through circulating water passage 16. And And the control part 22 is comprised so that the pump 17 may be driven and the water in the water tank 2 may be circulated through the circulation water channel 16 in the tank cleaning operation.
　この構成によれば、循環水路１６に加熱された水を流して、循環水路１６内に生息する菌やカビを死滅させる。さらに、死滅した菌やカビ、バイオフィルムなどの汚れを、循環水路１６から剥離させて、機外へ排出する。これにより、湿度が高く、菌やカビの生息場所となり易い、例えば循環水路１６などの水周りの配管の内表面を清浄にできる。その結果、次回の洗濯運転時において、衣類への汚れの、再付着を抑制できる。 According to this configuration, the heated water is caused to flow through the circulation channel 16 to kill bacteria and fungi that live in the circulation channel 16. Further, dirt such as dead bacteria, mold and biofilm is peeled off from the circulation channel 16 and discharged outside the machine. This makes it possible to clean the inner surface of the piping around the water such as the circulating water passage 16 where the humidity is high and it is likely to be a habitat for bacteria and mold. As a result, in the next washing operation, re-adhesion of dirt to clothes can be suppressed.
　（実施の形態２）
　以下、本発明の実施の形態２の洗濯機について、図５を参照しながら、説明する。 (Embodiment 2)
Hereinafter, a washing machine according to Embodiment 2 of the present invention will be described with reference to FIG.
　実施の形態２の洗濯機は、槽洗浄運転の槽洗浄ステップにおいて、水槽２内の水が所定の温度に加熱された後に、洗濯用洗剤を投入する点で、実施の形態１の洗濯機と異なる。なお、他の構成は、実施の形態１と同じであるため、同一の構成に同一の符号を付して詳細な説明は、実施の形態１を援用する。 The washing machine according to the second embodiment differs from the washing machine according to the first embodiment in that a washing detergent is added after the water in the water tub 2 is heated to a predetermined temperature in a tub washing step of the tub washing operation. different. Since other configurations are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and the detailed description uses the first embodiment.
　図５は、本発明の実施の形態２における洗濯機の槽洗浄運転時の動作を示すタイムチャートである。 FIG. 5 is a time chart showing the operation of the washing machine in the tub washing operation in Embodiment 2 of the present invention.
　図５に示すように、実施の形態２の槽洗浄運転は、実施の形態１と同様に、槽洗浄ステップ、排水ステップ、すすぎステップ、排水ステップなどの各ステップで構成され、順に実行される。 As shown in FIG. 5, the tank cleaning operation according to the second embodiment includes, as in the first embodiment, a tank cleaning step, a drain step, a rinsing step, a drain step, and the like, and is sequentially executed.
　なお、以下では、実施の形態１とは異なる、槽洗浄運転の槽洗浄ステップについて、詳しく説明する。 In the following, the tank cleaning step of the tank cleaning operation, which is different from the first embodiment, will be described in detail.
　槽洗浄運転において、制御部２２は、槽洗浄ステップが開始されると、まず、給水弁９を開く。これにより、水道から供給される水が給水配管８を流れ、洗剤投入装置１０および給水路１１を経由して、水槽２内に給水される。このとき、洗剤投入装置１０には、予め洗濯用洗剤が投入されているが、制御部２２は、水槽２内に溜められた水が、所定の温度（設定温度Ｔ１）に加熱されるまで洗剤投入装置１０を作動させない。そのため、給水時の初期段階では、洗濯用洗剤は水槽２内に投入されず、水のみが供給水される。 In the tank cleaning operation, when the tank cleaning step is started, first, the water supply valve 9 is opened. Thereby, the water supplied from the tap water flows through the water supply pipe 8, and is supplied into the water tank 2 via the detergent introduction device 10 and the water supply passage 11. At this time, although the detergent for washing is previously introduced into the detergent introducing device 10, the control unit 22 controls the detergent stored in the water tub 2 until the water is heated to a predetermined temperature (set temperature T1). The charging device 10 is not operated. Therefore, at the initial stage of water supply, the laundry detergent is not supplied into the water tub 2 and only water is supplied.
　つぎに、制御部２２は、水位「低」まで給水されたことを水量検知部２０で検知すると、ヒータ１９に通電して、水槽２の底部に溜められた、温度Ｔ０の水を加熱する。同時に、制御部２２は、ドラム３を、回転制御Ｓ１で回転駆動する。これにより、ドラム３の周側面などが温水で加熱される。また、ドラム３の回転により、加熱された水が攪拌され、蒸気の発生が促進される。つまり、ドラム３は、水槽２内の水の加熱による昇温中に、回転駆動される。そのため、水槽２内が低温の段階から水槽２内を素早く加熱することができる。 Next, when the control unit 22 detects that the water level is “low” by the water amount detection unit 20, the control unit 22 energizes the heater 19 to heat the water at the temperature T0 stored in the bottom of the water tank 2. At the same time, the control unit 22 drives the drum 3 to rotate under the rotation control S1. Thus, the peripheral side surface of the drum 3 is heated by the hot water. In addition, the rotation of the drum 3 agitates the heated water, thereby promoting the generation of steam. That is, the drum 3 is driven to rotate while the temperature of the water in the water tank 2 is increased by heating. Therefore, the inside of the water tank 2 can be quickly heated from the stage where the inside of the water tank 2 is at a low temperature.
　このとき、実施の形態２では、水槽２内に洗濯用洗剤が投入されていない。そのため、ドラム３の回転数を、実施の形態１の洗濯用洗剤が投入されている場合よりも高く設定することができる。そこで、実施の形態２では、回転制御Ｓ０ではなく、回転制御Ｓ１で、ドラム３を制御する。回転制御Ｓ１は、例えば、４０ｒｐｍで連続駆動する制御動作である。 At this time, in the second embodiment, the laundry detergent is not put into the water tub 2. Therefore, the rotation speed of drum 3 can be set higher than that in the case where the laundry detergent according to the first embodiment is supplied. Therefore, in the second embodiment, the drum 3 is controlled not by the rotation control S0 but by the rotation control S1. The rotation control S1 is a control operation for continuously driving at, for example, 40 rpm.
　つぎに、制御部２２は、水温が設定温度Ｔ１に到達したことを温度検知部２１で検知すると、洗剤投入装置１０を作動して、水槽２内に洗濯用洗剤を投入する。このとき、同時に、制御部２２は、ドラム３を回転制御Ｓ２で駆動する。回転制御Ｓ２は、実施の形態１と同様に、例えば「４０ｒｐｍ、１０秒駆動と、停止１０秒」を繰り返す制御動作である。これにより、洗濯用洗剤が含まれた水が、水温が上昇した状態で攪拌される。そのため、洗濯用洗剤の泡立ちが抑制される。その結果、槽洗浄用の専用洗剤を使用することなく、洗濯用洗剤で槽洗浄を行うことができる。 Next, when the temperature detector 21 detects that the water temperature has reached the set temperature T1, the controller 22 activates the detergent dispenser 10 and dispenses the laundry detergent into the water tub 2. At this time, the control unit 22 simultaneously drives the drum 3 under the rotation control S2. The rotation control S2 is a control operation that repeats, for example, “40 rpm, driving for 10 seconds, and stopping for 10 seconds”, as in the first embodiment. Thereby, the water containing the laundry detergent is agitated in a state where the water temperature is raised. Therefore, foaming of the laundry detergent is suppressed. As a result, the tub can be cleaned with the laundry detergent without using a dedicated tub cleaning detergent.
　以上のように、実施の形態２の洗濯機は、水槽２内に洗濯用洗剤を投入する洗剤投入装置１０を有する。そして、制御部２２は、水槽２内に溜められた水が所定の温度に加熱されると、洗剤投入装置１０によって洗濯用洗剤を投入するように構成される。 As described above, the washing machine according to the second embodiment has the detergent charging device 10 for charging the laundry detergent into the water tub 2. Then, the control unit 22 is configured so that when the water stored in the water tub 2 is heated to a predetermined temperature, the detergent input device 10 inputs the laundry detergent.
　この構成によれば、水温が低い時は、洗濯用洗剤が投入されていないため、水の昇温中に、ドラム３が回転駆動されても泡立つことがない。そのため、昇温中の水で、水槽２およびドラム３の洗浄を行うことができる。また、ドラム３の回転駆動による水槽２内に溜められた水の撹拌時間を、長くとれる。そのため、水の昇温中に、水槽２内の温度を効率よく上昇させることができる。 According to this configuration, when the temperature of the water is low, the laundry detergent is not supplied, so that the foaming does not occur even when the drum 3 is driven to rotate while the temperature of the water is rising. Therefore, the water tank 2 and the drum 3 can be washed with the water being heated. In addition, the stirring time of the water stored in the water tank 2 by the rotation of the drum 3 can be increased. Therefore, the temperature in the water tank 2 can be efficiently raised during the temperature rise of the water.
　以上で説明したように、本発明の洗濯機は、水槽内に回転可能に設けられる洗濯槽と、洗濯槽を回転駆動するモータと、水槽内に給水する給水部と、水槽内の水を排水する排水部と、水槽内に溜められる水を加熱する加熱部と、水槽内の水の温度を検知する温度検知部と、洗濯運転および槽洗浄運転を制御する制御部を含む。制御部は、槽洗浄運転において、水槽内に洗濯用洗剤の投入と、給水部よる水槽内の給水と、水槽内に溜められた水の加熱部による加熱と、を行う。さらに、制御部は、温度検知部によって水槽内の水が所定の温度に加熱されたことを検知すると、洗濯槽を回転駆動し、水槽内の水を攪拌するように構成される。 As described above, the washing machine of the present invention has a washing tub rotatably provided in a water tub, a motor for driving the rotation of the washing tub, a water supply unit for supplying water to the water tub, and draining water in the water tub. A heating unit that heats the water stored in the water tank, a temperature detection unit that detects the temperature of the water in the water tank, and a control unit that controls the washing operation and the tub cleaning operation. In the tub washing operation, the control unit performs the charging of the laundry detergent into the tub, the supply of water in the tub by the water supply unit, and the heating of the water stored in the tub by the heating unit. Further, the control unit is configured to, when the temperature detecting unit detects that the water in the water tub is heated to a predetermined temperature, rotate the washing tub and stir the water in the water tub.
　この構成によれば、洗濯用洗剤が含まれた水を、水温が上昇した状態で攪拌する。これにより、洗濯用洗剤の泡立ちを抑制して、槽洗浄用の専用洗剤を使用することなく、洗濯用洗剤で槽洗浄を行うことができる。 According to this configuration, the water containing the laundry detergent is stirred in a state where the water temperature is raised. Thereby, foaming of the laundry detergent is suppressed, and the tub can be washed with the laundry detergent without using a dedicated detergent for washing the tub.
　また、本発明の洗濯機は、水槽内に洗濯用洗剤を投入する洗剤投入装置を有する。そして、制御部は、水槽内に溜められた水が所定の温度に加熱されると、洗剤投入装置によって洗濯用洗剤を投入する構成が望ましい。 The washing machine of the present invention also has a detergent feeding device for feeding a laundry detergent into a water tub. Then, it is desirable that the control unit inputs the laundry detergent by the detergent input device when the water stored in the water tub is heated to a predetermined temperature.
　この構成によれば、水温が低い時は、洗濯用洗剤が投入されていないため、水の昇温中に、洗濯槽が回転駆動されても泡立つことがない。そのため、昇温中の水で、水槽および洗濯槽の洗浄を行うことができる。また、水槽内に溜められた水の撹拌時間が長くとれる。そのため、昇温中に水槽内の温度を効率よく上昇させることができる。 According to this configuration, when the water temperature is low, the laundry detergent is not supplied, so that the washing tub is not foamed even when the washing tub is driven to rotate while the temperature of the water is rising. Therefore, the water tub and the washing tub can be washed with the water being heated. Further, the stirring time of the water stored in the water tank can be increased. Therefore, the temperature in the water tank can be efficiently raised during the temperature rise.
　また、本発明の洗濯機は、水槽内の水を水槽の底部から洗濯槽内へ導く循環水路と、循環水路を通して水槽内の水を循環させるポンプとを有する。そして、制御部は、槽洗浄運転において、ポンプを駆動し、水槽内の水を、循環水路を通して循環する構成が望ましい。 Further, the washing machine of the present invention has a circulating water channel that guides water in the water tub from the bottom of the water tub into the washing tub, and a pump that circulates the water in the water tub through the circulating water channel. And it is desirable that the control unit drives the pump in the tank cleaning operation to circulate the water in the water tank through the circulation water channel.
　この構成によれば、循環水路に加熱された水を流して、循環水路内に生息する菌やカビを死滅させることができる。さらに、死滅した菌やカビ、バイオフィルムなどの汚れを、循環水路から剥離させ、機外へ排出できる。これにより、湿度が高く菌やカビの生息場所となり易い水周りの配管の内表面を清浄にできる。その結果、次回の洗濯運転時において、衣類への、汚れの再付着を抑制できる。 According to this configuration, the heated water can be flown into the circulation channel to kill bacteria and fungi that live in the circulation channel. Further, dirt such as dead bacteria, mold, biofilm and the like can be peeled off from the circulation channel and discharged out of the machine. This makes it possible to clean the inner surface of the piping around the water, which is likely to be a habitat for bacteria and mold due to high humidity. As a result, in the next washing operation, re-adhesion of dirt to clothes can be suppressed.
　本発明は、洗濯用洗剤を使用して槽洗浄を行うことができる。そのため、ランニングコストなどの抑制が望まれる洗濯機などに有用である。 According to the present invention, the tub can be washed using a laundry detergent. Therefore, it is useful for a washing machine or the like in which running cost and the like are desired to be suppressed.
　１　　筐体
　２　　水槽
　３　　ドラム（洗濯槽）
　３ａ　　回転軸
　４　　バッフル
　５　　小孔
　６　　開口部
　７　　モータ
　８　　給水配管
　９　　給水弁（給水部）
　１０　　洗剤投入装置
　１１　　給水路
　１２　　排水経路
　１３　　排水弁（排水部）
　１４　　排水フィルター
　１５　　排水口
　１６　　循環水路
　１７　　ポンプ
　１８　　吐出口
　１９　　ヒータ（加熱部）
　２０　　水量検知部
　２１　　温度検知部
　２２　　制御部
　２３　　布量検知部
　２４　　回転検知部
　２５　　扉
　２６　　操作表示部 1 housing 2 water tank 3 drum (washing tank)
3a rotating shaft 4 baffle 5 small hole 6 opening 7 motor 8 water supply pipe 9 water supply valve (water supply part)
Reference Signs List 10 Detergent charging device 11 Water supply channel 12 Drainage channel 13 Drainage valve (drainage part)
14 Drain filter 15 Drain port 16 Circulation channel 17 Pump 18 Discharge port 19 Heater (heating unit)
Reference Signs List 20 Water amount detection unit 21 Temperature detection unit 22 Control unit 23 Cloth amount detection unit 24 Rotation detection unit 25 Door 26 Operation display unit

Claims (3)

  1. 水槽内に回転可能に設けられる洗濯槽と、
    前記洗濯槽を回転駆動するモータと、
    前記水槽内に給水する給水部と、
    前記水槽内の水を排水する排水部と、
    前記水槽内に溜められた前記水を加熱する加熱部と、
    前記水槽内の前記水の温度を検知する温度検知部と、
    洗濯運転および槽洗浄運転を制御する制御部と、を含み、
    前記制御部は、
    前記槽洗浄運転において、
    前記水槽内に洗濯用洗剤の投入と、
    前記給水部による前記水槽内の給水と、
    前記水槽内に溜められた前記水の前記加熱部による加熱と、行い、
    前記温度検知部によって前記水槽内の前記水が所定の温度に加熱されたことを検知すると、前記洗濯槽を回転制御し、前記水槽内の前記水を攪拌する、
    洗濯機。     A washing tub rotatably provided in the water tank,
    A motor that rotationally drives the washing tub,
    A water supply unit for supplying water into the water tank,
    A drainage unit that drains water in the water tank,
    A heating unit that heats the water stored in the water tank,
    A temperature detection unit that detects the temperature of the water in the water tank,
    A control unit for controlling the washing operation and the tub washing operation,
    The control unit includes:
    In the tank cleaning operation,
    Injection of laundry detergent into the water tank,
    Water supply in the water tank by the water supply unit,
    Heating by the heating unit of the water stored in the water tank, and
    When detecting that the water in the water tub has been heated to a predetermined temperature by the temperature detection unit, controls the rotation of the washing tub, agitates the water in the water tub,
    Washing machine.
  2. 前記水槽内に前記洗濯用洗剤を投入する洗剤投入装置を有し、
    前記制御部は、前記水槽内に溜められる前記水が前記所定の温度に加熱されると、前記洗剤投入装置によって前記洗濯用洗剤を投入する、
    請求項１に記載の洗濯機。     A detergent input device for inputting the laundry detergent into the water tank,
    When the water stored in the water tub is heated to the predetermined temperature, the control unit inputs the laundry detergent by the detergent input device,
    The washing machine according to claim 1.
  3. 前記水槽内の前記水を前記水槽の底部から前記洗濯槽内へ導く循環水路と、前記循環水路を通して前記水槽内の前記水を循環させるポンプと、を有し、
    前記制御部は、
    前記槽洗浄運転において、前記ポンプを駆動し、前記水槽内の水を、前記循環水路を通して循環する、
    請求項１または請求項２のいずれか１項に記載の洗濯機。     A circulating water channel that guides the water in the water tub from the bottom of the water tub into the washing tub, and a pump that circulates the water in the water tub through the circulating water channel;
    The control unit includes:
    In the tank cleaning operation, the pump is driven, and water in the water tank is circulated through the circulation channel.
    The washing machine according to claim 1.
PCT/JP2019/018655 2018-06-25 2019-05-10 Washing machine WO2020003760A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020527254A JPWO2020003760A1 (en) 2018-06-25 2019-05-10 Washing machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-119899 2018-06-25
JP2018119899 2018-06-25

Publications (1)

Publication Number Publication Date
WO2020003760A1 true WO2020003760A1 (en) 2020-01-02

Family

ID=68985590

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/018655 WO2020003760A1 (en) 2018-06-25 2019-05-10 Washing machine

Country Status (3)

Country Link
JP (1) JPWO2020003760A1 (en)
TW (1) TW202001028A (en)
WO (1) WO2020003760A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022033597A (en) * 2020-08-17 2022-03-02 日立グローバルライフソリューションズ株式会社 washing machine
JP2023021325A (en) * 2020-07-31 2023-02-10 アイリスオーヤマ株式会社 washing machine
JP7469825B2 (en) 2020-07-31 2024-04-17 アイリスオーヤマ株式会社 washing machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008104714A (en) * 2006-10-26 2008-05-08 Toshiba Corp Laundry machine
JP2011000318A (en) * 2009-06-19 2011-01-06 Toshiba Corp Washing machine
JP2013226337A (en) * 2012-04-27 2013-11-07 Hitachi Appliances Inc Washing machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004321306A (en) * 2003-04-22 2004-11-18 Sharp Corp Washing machine
JP4886656B2 (en) * 2007-11-05 2012-02-29 株式会社稲本製作所 Continuous water washer and disinfecting method for continuous water washer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008104714A (en) * 2006-10-26 2008-05-08 Toshiba Corp Laundry machine
JP2011000318A (en) * 2009-06-19 2011-01-06 Toshiba Corp Washing machine
JP2013226337A (en) * 2012-04-27 2013-11-07 Hitachi Appliances Inc Washing machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023021325A (en) * 2020-07-31 2023-02-10 アイリスオーヤマ株式会社 washing machine
JP7319738B2 (en) 2020-07-31 2023-08-02 アイリスオーヤマ株式会社 washing machine
JP7469825B2 (en) 2020-07-31 2024-04-17 アイリスオーヤマ株式会社 washing machine
JP2022033597A (en) * 2020-08-17 2022-03-02 日立グローバルライフソリューションズ株式会社 washing machine
JP7281437B2 (en) 2020-08-17 2023-05-25 日立グローバルライフソリューションズ株式会社 washing machine

Also Published As

Publication number Publication date
TW202001028A (en) 2020-01-01
JPWO2020003760A1 (en) 2021-07-08

Similar Documents

Publication Publication Date Title
JP7398678B2 (en) washing machine
WO2019230384A1 (en) Washing machine
EP2025794B1 (en) Washing machine
US20090255299A1 (en) Clothes Drier, Washing Machine, and Washing Machine with Clothes Drying Function
WO2020003760A1 (en) Washing machine
JP6173759B2 (en) Washing machine
CN109750443B (en) Washing and drying machine
JP2018000856A (en) Washing machine
JP2011152253A (en) Washing machine
JP2012205625A (en) Drum-type washing machine
KR20180057710A (en) washer
JP4795696B2 (en) Washing machine
JP6677476B2 (en) Washing machine
JP6513978B2 (en) Washing machine
WO2017206938A1 (en) Washing machine
JP2011152252A (en) Washing machine
JP2020081347A (en) Washing machine
JP2014100428A (en) Washing machine
JP2013052057A (en) Drum type washing machine
JP2011115431A (en) Washing machine
JP2018148966A (en) Washing and drying machine
JP6799753B2 (en) Washing machine
EP3613885A1 (en) Method of controlling a laundry treating device
JP2005013577A (en) Drum type washing machine
TWI624575B (en) Washer dryer

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2020527254

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19826996

Country of ref document: EP

Kind code of ref document: A1