WO2019230384A1 - Machine à laver - Google Patents

Machine à laver Download PDF

Info

Publication number
WO2019230384A1
WO2019230384A1 PCT/JP2019/019201 JP2019019201W WO2019230384A1 WO 2019230384 A1 WO2019230384 A1 WO 2019230384A1 JP 2019019201 W JP2019019201 W JP 2019019201W WO 2019230384 A1 WO2019230384 A1 WO 2019230384A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
tank
washing
tub
water tank
Prior art date
Application number
PCT/JP2019/019201
Other languages
English (en)
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 JP2020521836A priority Critical patent/JPWO2019230384A1/ja
Publication of WO2019230384A1 publication Critical patent/WO2019230384A1/fr

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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/43—Control of cleaning or disinfection of washing machine parts, e.g. of tubs
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/16—Washing liquid temperature
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/18—Washing liquid level
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/10—Temperature of washing liquids; Heating means therefor

Definitions

  • the present invention relates to a washing machine for washing clothes and the like.
  • washing machine having a shower function that is a function of discharging washing water to the laundry in the washing tub.
  • Some of these washing machines are provided with a circulation water channel for circulating the washing water in the water tub and discharging it into the washing tub.
  • the circulation channel is difficult to care for, dirt substances accumulate in the circulation channel, and fungi or molds tend to propagate using the deposit as a habitat. For this reason, clothing has been washed even though washing has occurred due to unpleasant odors in the circulation channel, bacteria or mold on the laundry, or metabolites or biofilms attached to it. May get dirty.
  • a washing machine for sterilizing the washing tub in the following procedure has been proposed (for example, see Patent Document 1). That is, after performing a tank cleaning process using a dedicated washing detergent for washing the washing tub, the air heated by the heating means is sent into the washing tub by the blowing means and the inside of the washing tub is heated to a high temperature. To. Further, a small amount of water is supplied to the heating means or the washing tub to make the washing tub a hot and humid environment, and the sterilization in the washing tub is performed.
  • This invention solves the said conventional problem, and aims at providing the washing machine which can raise the temperature in a water tank rapidly and can perform sterilization in a water tank efficiently.
  • a washing machine of the present invention heats water stored in a water tub, a water tub that supplies water in the water tub, a water tub that is rotatably provided in the water tub.
  • Heating section water level detection section for detecting the water level stored in the water tank, washing operation, and heating the water stored in the water tank to the heating section, and the steam generated by heating in the water tank
  • a control unit that executes a tank cleaning operation including a tank sterilization step for sterilization.
  • the control unit lowers the first water level stored in the water tank lower than the lowest water level set in the washing operation and higher than the water level at which the lower end of the washing tank is in contact with the water surface.
  • the washing tub is a component having the largest mass and heat capacity among the members in the water tub of the washing machine, the temperature in the water tub can be quickly raised by efficiently heating the washing tub. Therefore, sterilization in the water tank can be performed efficiently. Further, in the tank sterilization step, the first water level of the water stored in the water tank is lower than the lowest water level set in the normal washing operation and higher than the water level at which the lower end of the washing tank is in contact with the water surface. The time and energy required for heating water can be reduced.
  • the washing machine of the present invention can efficiently disinfect the water tank.
  • FIG. 1 is a schematic configuration diagram of a washing machine according to Embodiment 1 of the present invention.
  • Block configuration diagram of the washing machine in Embodiment 1 of the present invention The time chart which shows operation
  • operation of the washing machine in Embodiment 1 of this invention The schematic diagram which shows the water level and water flow at the time of the rinse step of the washing machine in Embodiment 1 of this invention.
  • Schematic configuration diagram of a washing machine in Embodiment 2 of the present invention
  • the washing machine of the first invention includes a washing tub rotatably provided in the water tub, a water supply unit for supplying water into the water tub, a heating unit for heating water stored in the water tub, and a water tub.
  • a water level detection unit that detects the water level of the stored water, a washing operation, and a tank sterilization step that causes the heating unit to heat the water stored in the water tank and disinfects the water tank with steam generated by heating.
  • a controller that executes a tank cleaning operation.
  • the control unit is configured such that the first water level stored in the water tank is lower than the lowest water level set in the washing operation and higher than the water level at which the lower end of the washing tank is in contact with the water surface. To control.
  • the water heated by the heating unit and the washing tub can be brought into contact with each other. Therefore, the heat of a heating part can be efficiently transmitted to a washing tub via heated water, and the temperature in a water tub can be raised rapidly.
  • the washing tub disposed in the water tub has a large mass and heat capacity, the temperature in the water tub can be quickly increased by efficiently heating the washing tub. As a result, the inside of the water tank can be sterilized efficiently.
  • the first water level of the water stored in the water tank is lower than the lowest water level set in the normal washing operation and higher than the water level at which the lower end of the washing tank is in contact with the water surface, thereby heating the water. Time and energy can be reduced.
  • the washing tub is driven to rotate about the horizontal axis, and the controller performs washing during the temperature rise of the water in the tub by the heating unit in the tank sterilization step.
  • the tank is controlled to rotate.
  • the washing tub is disposed at an inclination
  • the control unit further executes a rinsing step for washing the inside of the water tub in the tub washing operation, and the control unit is rinsed.
  • the second water level of the water stored in the water tub is controlled so that the lower end of the washing tub is submerged, and the laundry tub is driven to rotate at a higher speed than in the sterilization step.
  • the washing tank is rotated at a high speed at the second water level to wash a wide area in the water tank.
  • the washing tub is inclined, for example, when it is inclined so that the front side is higher, the laundry tub is rotated while the lower end of the front higher side of the washing tub is immersed in water.
  • the entire peripheral side surface of the tank can be brought into contact with water. As a result, the cleaning effect in the water tank can be enhanced.
  • the tank and the washing tub are cleaned in the tank cleaning operation, and the control unit performs the tank sterilization step in the tank cleaning operation.
  • a rinsing step for cleaning the inside of the water tank is performed later.
  • the washing machine circulates the water in the water tank through the circulation water path provided to guide the water in the water tank from the bottom of the water tank into the washing tank.
  • the control unit controls the pump to drive and circulate the water in the water tank through the circulation water channel.
  • the second water level is higher than the first water level.
  • FIG. 1 is a schematic configuration diagram of a washing machine according to the first embodiment of the present invention.
  • FIG. 2 is a block diagram of the washing machine in the present embodiment.
  • FIG. 3 is a time chart showing the operation at the time of the tank washing operation of the washing machine in the present embodiment.
  • FIG. 4 is a graph showing the relationship between the water temperature and the sterilization effect in the present embodiment.
  • FIG. 5 is a schematic configuration diagram of the main part showing the water level during the washing operation of the washing machine in the present embodiment.
  • FIG. 6 is a schematic diagram showing a water level and a water flow during the rinsing step of the washing machine according to the present embodiment.
  • the washing machine of the present embodiment is a so-called drum type washing machine in which the rotation shaft 3a of the drum 3 serving as a washing tub is set in the horizontal direction (including inclination).
  • a water tank 2 elastically supported in the housing 1 is provided in the water tub 2, a bottomed cylindrical drum 3 as a washing tub is provided so as to be rotatable about a horizontal rotation shaft 3a.
  • the rotation shaft 3a of the drum 3 has an angle ⁇ (for example, 10 degrees), and the drum 3 is disposed so as to incline toward the front higher side with the front rising.
  • a plurality of baffles 4 projecting inward toward the rotation center of the drum 3 and a large number of small holes 5 communicating with the inside of the water tank 2 are provided on the inner peripheral side surface of the drum 3.
  • An opening 6 is provided on the front side of the drum 3. The user uses the opening 6 to put laundry such as clothes (hereinafter referred to as an object to be cleaned) into and out of the drum 3.
  • a motor 7 that rotationally drives the drum 3 is disposed on the rear surface of the water tank 2.
  • the motor 7 is composed of a brushless DC motor, and the rotation speed can be freely changed by inverter control.
  • a water supply pipe 8 for supplying water into the water tank 2 is connected to a tap (not shown) of a water supply, and is provided with a water supply valve 9 which is a water supply section.
  • the detergent case 10 into which the detergent is introduced is connected to the water supply pipe 8 in communication.
  • the detergent case 10 is connected to the water tank 2 through the water supply path 11. Thereby, the water flowing from the water supply pipe 8 through the detergent case 10 and the water supply path 11 flows into the water tank 2.
  • the washing water in the water tank 2 is discharged out of the machine through the drainage path 12.
  • the drainage path 12 includes a drainage valve 13 that is a drainage part and a drainage filter 14. Washing water is discharged from the drainage port 15 provided at the bottom of the aquarium 2 through the drainage filter 14 and through the opened drainage valve 13 to the outside of the machine.
  • the drainage filter 14 is provided at a position where the washing water circulates during the washing operation, and collects a button or the like detached from the object to be cleaned.
  • the drainage filter 14 is configured to be removable from the front side of the housing 1.
  • the circulating water channel 16 is provided so as to guide the washing water in the water tank 2 from the drain port 15 to the opening 6 side located at the front part in the water tank 2.
  • the circulation channel 16 is provided with a pump 17 and a discharge port 18 for circulating the wash water.
  • the pump 17 is installed at the bottom of the housing 1 and is disposed downstream of the drainage filter 14.
  • the discharge port 18 discharges wash water into the drum 3 by driving the pump 17.
  • the heater 19 is a heating unit that heats the water stored in the water tank 2.
  • the heater 19 is disposed at the bottom of the water tank 2 and is submerged when a predetermined amount of water is stored in the water tank 2.
  • the water level detection unit 20 detects the water level of the washing water supplied into the water tank 2.
  • the temperature detection unit 21 detects the temperature of the water in the water tank 2.
  • the temperature detection unit 21 is composed of a thermistor or the like, and is disposed in a submerged portion at the lower part of the water tank 2.
  • the control unit 22 is provided in the housing 1 and controls various components based on input information to execute a washing operation, a tank washing operation, and the like. Specifically, as shown in the block configuration diagram of FIG. 2, the control unit 22 includes an amount of an object to be cleaned detected by the cloth amount detection unit 23, a washing water level detected by the water level detection unit 20, and The temperature of water detected by the temperature detector 21 and the driving amount (for example, the number of rotations) of the drum 3 detected by the rotation detector 24 are input as information. Based on these inputs, the control unit 22 controls the motor 7, the water supply valve 9, the drain valve 13, the pump 17, the heater 19, etc., and sequentially controls the washing step, the rinsing step, the dehydration step, etc. Execute.
  • the control part 22 performs the tank cleaning operation which cleans the water tank 2 and the drum 3 so that it may mention later.
  • the tank cleaning operation includes at least a tank sterilization step and a rinsing step.
  • the tank sterilization step the water stored in the water tank 2 is heated by the heater 19 and the water tank 2 is sterilized with the generated steam.
  • the rinsing step is performed after the tank sterilization step, and the water tank 2, the drum 3, the circulating water channel 16 and the like are washed.
  • the user can open and close the object to be cleaned from the opening 6 provided on the front surface side of the drum 3 by opening the door 25 that can be opened and closed provided on the front surface of the housing 1.
  • an operation display unit 26 is provided in the upper part on the front side of the housing 1. The user can make settings for operating the washing machine by operating the operation display unit 26.
  • the operation display unit 26 displays the setting contents, the operation status, and the like.
  • the washing operation includes at least a washing step, a rinsing step, and a dewatering step.
  • the user opens the door 25 and puts an object to be cleaned into the drum 3 through the opening 6. Then, the user turns on the power switch (not shown) of the operation display unit 26 and operates the start switch (not shown) to start operation.
  • a washing step is executed.
  • the control unit 22 detects the amount of the object to be cleaned put into the drum 3 by the cloth amount detection unit 23.
  • the amount of the object to be cleaned can be detected from the amount of torque applied to the motor 7 or the current value of the motor 7 when the drum 3 rotates.
  • the control unit 22 sets the amount of water to be supplied into the water tank 2 according to the detected amount of the object to be cleaned.
  • the control part 22 sets the time which performs each step of washing operation.
  • the control unit 22 determines a standard detergent amount from a preset detergent amount according to the amount of the object to be cleaned, and displays it on the operation display unit 26. The user puts the detergent into the detergent case 10 according to the displayed detergent amount.
  • the control unit 22 opens the water supply valve 9. As a result, water from the water supply is supplied into the water tank 2 via the detergent case 10. The water that has entered the detergent case 10 through the water supply pipe 8 dissolves the detergent put in the detergent case 10 and is supplied into the water tank 2 as washing water. At this time, since the drain valve 13 is closed, the washing water accumulates at the bottom of the water tank 2. Washing water collected at the bottom of the water tank 2 flows into the drum 3 through the small holes 5.
  • the control unit 22 detects the amount of water supplied into the water tank 2 by the water level detection unit 20.
  • the controller 22 determines that the amount of water supplied has reached a predetermined amount of water set according to the amount of the object to be cleaned
  • the controller 22 closes the water supply valve 9.
  • the control unit 22 rotationally drives the drum 3 in one direction at a rotation speed (for example, 20 rpm) at which the object to be cleaned rolls in the drum 3 during water supply. This accelerates the penetration of the wash water into the object to be cleaned.
  • the water level of the washing water in the water tank 2 is lowered from the set water level due to the water absorption of the washing water to be washed.
  • the control part 22 opens the water supply valve 9 again, replenishes in the washing tub 2, and returns the water level of washing water to a setting water level.
  • the control unit 22 drives the pump 17 when the water supply is finished.
  • the water accumulated at the bottom of the water tank 2 is guided from the drain port 15 to the circulation channel 16.
  • the water flowing into the circulation water channel 16 flows through the circulation water channel 16 and is discharged from the discharge port 18 into the drum 3.
  • the washing water that has permeated the article to be cleaned flows out from the small hole 5 into the water tank 2 and circulates along the route passing from the drain port 15 through the circulation channel 16.
  • the control unit 22 drives the drum 3 to rotate in the forward and reverse directions alternately at a predetermined number of rotations (for example, 42 rpm) by the motor 7 every predetermined time, and executes washing of the object to be cleaned.
  • a predetermined number of rotations for example, 42 rpm
  • the control unit 22 executes the washing step for a predetermined time (for example, 10 minutes).
  • the control unit 22 opens the drain valve 13 to discharge the washing water to the outside of the machine, and ends the washing step.
  • the control unit 22 executes the rinsing step and the dehydrating step in this order, and finishes the washing operation. Detailed descriptions of the rinsing step and the dehydrating step are omitted.
  • washing water is a general term for water used in a washing machine. That is, the washing water includes water that does not include the detergent supplied to the washing machine, washing water that includes the detergent that has been added, and rinse water that rinses away detergent components and dirt in the rinsing step.
  • the tank washing operation is performed separately from the washing operation, and the water tank 2, the drum 3, the circulating water channel 16 and the like are washed.
  • the tank cleaning operation includes at least a tank sterilization step, a drainage step, a rinse step, and a drainage step, and these steps are executed in order.
  • the user turns on the power switch (not shown) of the operation display unit 26, sets the tank cleaning operation, and then operates the start switch (not shown) to start the operation. First, a tank sterilization step is performed.
  • Control part 22 will open the water supply valve 9, as shown in the time chart of FIG. 3, if a tank sanitization step is started. Thereby, water from the water supply is supplied into the water tank 2 through the water supply pipe 8 and the detergent case 10. At this time, since the detergent is not put into the detergent case 10, water not containing the detergent is supplied into the water tank 2. Water accumulated at the bottom of the water tank 2 flows into the drum 3 through the small holes 5.
  • the control unit 22 detects the amount of water supplied into the water tank 2 with the water level detection unit 20. Based on the output of the water level detection unit 20, the control unit 22 supplies water to a predetermined water level L1 and closes the water supply valve 9.
  • the water level L1 is set to a water level that is higher than the water level at which the lower end 3b on the rear side of the drum 3 is in contact with the water surface (see FIG. 5) and lower than the lowest water level that is supplied in a normal washing operation.
  • the water level L1 is a water level at which the heater 19 is submerged.
  • the control unit 22 controls energization to the heater 19 based on the output of the temperature detection unit 21 and heats the water stored at the bottom of the water tank 2. As a result, steam is generated in the water tank 2. At this time, since the heated water and the lower part of the drum 3 are in contact with each other, the drum 3 is directly heated with warm water. Accordingly, the drum 3 having a large mass and heat capacity can be efficiently heated, and the temperature in the water tank 2 can be quickly raised.
  • the control unit 22 drives the drum 3 to rotate at a low speed (for example, 20 rpm) almost simultaneously with the energization of the heater 19 or before and after.
  • a low speed for example, 20 rpm
  • heated water can be agitated to promote the generation of steam. That is, the drum 3 is rotationally driven during the temperature rise by heating the water in the water tank 2, and the water tank 2 can be quickly heated from the low temperature stage.
  • the inside of the water tank 2 can be sterilized by heating the inside of the water tank 2. It is desirable to raise the temperature in the water tank 2 for sterilization to 50 degrees or more and 90 degrees or less. In general, mold or fungus sterilization is more advantageous at higher temperatures. However, if the temperature is set to a predetermined temperature or higher, it is necessary to consider the heat resistant temperature of the resin material that is the structure of the washing machine. In addition, it takes time to heat the supplied water to a high temperature. Therefore, in order to realize the same sterilization effect even at a low temperature for a short time and at a low temperature, as described above, the temperature in the water tank 2 is desirably raised to 50 degrees or more and 90 degrees or less.
  • FIG. 4 shows the relationship between the heating temperature and holding time for mold (horizontal axis) and the sterilization effect (vertical axis).
  • the relationship of the heating temperature is temperature a ⁇ temperature b ⁇ temperature c in FIG.
  • temperature a 45 degrees
  • temperature b 48 degrees
  • temperature c 50 degrees.
  • the time required to reduce the number of bacteria from 1.0E + 07 to 1.0E + 05 is compared.
  • the temperature a is over 10 minutes, while the temperature c is shortened to less than 5 minutes.
  • the number of bacteria that decrease with the same retention time is compared.
  • the heating temperature for mold is 50 degrees.
  • the control unit 22 detects the water temperature of the washing water in the water tank 2 by the temperature detection unit 21.
  • the controller 22 controls the heater 19 to maintain the temperature near the set temperature T1 for a predetermined time. For example, when the set temperature T1 is 55 degrees, the control unit 22 turns off the heater 19 when the water temperature reaches 55 degrees. Further, the controller 22 turns on the heater 19 when the water temperature drops to 53 degrees.
  • the temperature in the water tank 2 can be maintained at 50 degrees or more by turning the heater 19 on or off. Note that the controller 22 continues to rotate the drum 3 until the tank sterilization step is completed even after the water temperature reaches the set temperature T1.
  • the controller 22 drives the pump 17 when the water temperature reaches the set temperature T1.
  • the heated water in the water tank 2 flows and circulates in the circulation water channel 16 as follows.
  • the heated water in the water tank 2 is sucked from a drain port 15 provided at the bottom of the water tank 2, passes through a drain filter 14, and is guided to a circulation channel 16.
  • the water flowing into the circulation water channel 16 is discharged from the discharge port 18 into the drum 3.
  • the water discharged into the drum 3 flows out from the small hole 5 into the water tank 2 and circulates along a route passing through the circulation water channel 16 from the drain port 15.
  • the heated water flows and circulates through the path passing through the circulation channel 16, so that the bacteria or mold that inhabit the path passing through the circulation channel 16 can be killed and sterilized.
  • the control unit 22 drives the pump 17 at a low speed so that bacteria and fungi are brought into contact with the heated water for a long time.
  • the heated water may be circulated at a speed that allows the heated water to flow without staying in the route passing through the circulating water channel 16.
  • the drive of the pump 17 may be continuous or intermittent.
  • the control unit 22 executes the above-described tank sterilization step for a predetermined time (for example, 10 minutes after the water temperature reaches the set temperature T1), and stops energization of the heater 19.
  • a predetermined time for example, 10 minutes after the water temperature reaches the set temperature T1
  • control unit 22 executes a tank sterilization step followed by a drainage step.
  • the heated water used in the tank sterilization step is drained.
  • the control unit 22 opens the drain valve 13. As a result, the heated water is drained from the drain port 15 through the drain path 12 to the outside of the apparatus.
  • control unit 22 executes a rinsing step following the tank sterilization step and the drainage step.
  • dirt such as bacteria, mold, biofilm, etc. killed in the tank sterilization step is peeled off from the wall surface of the water tank 2 or the drum 3 and washed away.
  • the details of the rinsing step will be described.
  • the control unit 22 opens the water supply valve 9 and supplies water into the water tank 2 up to a predetermined water level L2 based on the output of the water level detection unit 20.
  • the predetermined water level L2 is higher than the predetermined water level L1 at the time of the tank sterilization step.
  • the water level L2 is set to a water level at which the lower end 3c on the higher side is submerged.
  • the control unit 22 detects the amount of water supplied into the water tank 2 with the water level detection unit 20. Based on the output of the water level detection unit 20, the control unit 22 supplies water to a predetermined water level L2 and closes the water supply valve 9. When water is stored in the water tank 2 up to the predetermined water level L2, the lower part of the drum 3 is sufficiently immersed in the water.
  • the water level detection unit 20 may detect the water levels L1 and L2 by detecting the amount of water supplied into the water tank 2.
  • the control unit 22 drives the drum 3 to rotate at a higher speed (for example, 100 rpm) than in the tank sterilization step.
  • a higher speed for example, 100 rpm
  • the water in the water tank 2 is wound upward by the high speed rotation of the drum 3 and reaches the upper surface of the water tank 2.
  • the lower end 3c on the higher side is immersed in water, so that the entire drum 3 can be cleaned.
  • control unit 22 executes the rinsing step after the tank sterilization step.
  • dirt, such as bacteria, mold, biofilm, etc. killed in the tank sterilization step can be peeled off from the wall surface of the water tank 2 or the drum 3 and washed away.
  • the control unit 22 closes the water supply valve 9 and drives the pump 17. Thereby, the water in the water tank 2 flows and circulates in the circulation channel 16, and dirt such as bacteria, molds, biofilms, etc. killed in the sterilization step can be peeled off from the wall surface in the circulation channel 16.
  • the control unit 22 executes the above rinsing step for a predetermined time (for example, 30 minutes) set in advance, and stops the rotation driving of the drum 3.
  • control unit 22 executes a draining step following the rinsing step.
  • the water in the water tank 2 and the circulation channel 16 is drained outside the apparatus.
  • the water in the water tank 2 and the circulating water channel 16 contains dirt such as bacteria, molds, biofilms, etc., killed in the tank disinfection step.
  • the control unit 22 opens the drain valve 13 to drain the water in the water tank 2 and the circulation water channel 16. Thereafter, the drum 3 is rotated at a high speed (for example, 300 rpm) for a short time. As a result, water droplets and the like adhering to the drum 3 are discharged outside the apparatus, and the control unit 22 ends the draining step and completes the tank cleaning operation.
  • a high speed for example, 300 rpm
  • the washing machine has a drum 3 rotatably provided in the water tank 2, a water supply valve 9 for supplying water into the water tank 2, and water stored in the water tank 2.
  • the heater 19 for heating, the water level detecting unit 20 for detecting the water level stored in the water tank 2, the washing operation, and the water stored in the water tank are heated by the heating unit, and steam generated by heating is used.
  • a control unit 22 that executes a tank cleaning operation including a tank sterilization step for sterilizing the inside of the water tank.
  • the control unit 22 sets the first water level L1 of the water stored in the water tank 2 to be lower than the minimum water level set in the washing operation, and from the water level at which the lower end 3b of the drum 3 is in contact with the water surface. Control to be higher.
  • the first water level L1 is higher than the water level at which the lower end of the drum 3 is in contact with the water surface.
  • the water heated by the heater 19 and the drum 3 come into contact with each other, so that the heat of the heater 19 can be efficiently transmitted to the drum 3. And the temperature in the water tank 2 can be quickly raised by the heat radiation of the drum 3. As a result, the inside of the water tank 2 can be sterilized efficiently.
  • the drum 3 disposed in the water tank 2 has a large mass and heat capacity, the temperature in the water tank 2 can be rapidly increased by efficiently heating the drum 3.
  • the water level stored in the water tank 2 is lower than the lowest water level set in the normal washing operation and higher than the water level at which the lower end 3b of the drum 3 is in contact with the water surface, The time and energy required for heating the water can be reduced.
  • the drum 3 is rotationally driven around the horizontal axis, and the control unit 22 controls the drum 3 to be rotationally driven during the temperature rise of the water in the water tank 2 in the tank sterilization step.
  • the peripheral side surface of the drum 3 can be sequentially immersed in water, and the drum 3 can be heated efficiently. Moreover, since warm water can be stirred by rotation of the drum 3, evaporation of warm water or heat exchange between warm water and air is promoted. As a result, the temperature and humidity in the water tank 2 can be increased efficiently, and the inside of the water tank 2 can be effectively sterilized.
  • the drum 3 is disposed at an inclination, and the control unit 22 further executes a rinsing step for cleaning the inside of the water tank 2 in the tank cleaning operation.
  • a rinsing step water is supplied to the second water level L2 where the lower end 3c on the higher side of the drum 3 is submerged, and the drum 3 is driven to rotate at a higher speed than in the tank sterilization step.
  • the inside of the water tank 2 can be sterilized efficiently.
  • a wide range in the water tank 2 can be washed by rotating at a high water level and high speed.
  • the cleaning effect in the water tank 2 can be enhanced.
  • the drum 3 is inclined, for example, when it is inclined so that the front side is higher, the drum 3 rotates while the lower end 3c on the front higher side of the drum 3 is immersed in water. The entire peripheral side surface of the drum 3 can be brought into contact with water.
  • the control unit 22 executes a rinsing step after the tank sterilization step in the tank cleaning operation.
  • the washing machine has a circulation channel 16 provided to guide the water in the aquarium 2 from the bottom of the aquarium 2 into the drum 3, and a pump 17 for circulating the water in the aquarium 2 through the circulation channel 16.
  • the control unit 22 controls the pump 17 to drive and circulate the water in the water tank 2 through the circulation water channel 16.
  • the bacteria or mold that inhabit the circulation channel 16 are killed, and the dead bacteria, mold, biofilm, etc. are removed from the circulation channel 16. It can be discharged out of the machine. Therefore, it is possible to clean the surface of the pipe around the water where the humidity is high and the habitat for fungi or mold, and to suppress the adhesion of dirt to the object to be cleaned during the washing operation.
  • the second water level L2 of the rinsing step is higher than the first water level L1 of the tank sterilization step.
  • FIG. 7 is a schematic configuration diagram of a washing machine according to the second embodiment of the present invention.
  • a feature of the present embodiment is that a part of the washing machine according to the first embodiment is applied to a so-called vertical washing machine in which the rotation axis of the washing tub 3 is set in the vertical direction (vertical direction in FIG. 7). It is.
  • the same components as those of the first embodiment are denoted by the same reference numerals, and the detailed description of the first embodiment is used.
  • a washing tub 3 is rotatably provided in the water tub 2.
  • a stirring blade 27 is rotatably provided at the bottom of the washing tub 3. The stirring blade 27 is rotationally driven by the motor 7 and stirs the washing water stored in the water tank 2.
  • the control unit 22 controls the tank cleaning operation for cleaning the water tank 2, the washing tank 3, and the like.
  • the tank cleaning operation is performed separately from the washing operation, and includes at least a tank sterilization step, a drainage step, a rinse step, and a drainage step, and these steps are executed in order.
  • the control unit 22 detects the amount of water supplied into the water tank 2 by the water level detection unit 20. Based on the output of the water level detection unit 20, the control unit 22 supplies water to the predetermined water level L ⁇ b> 1 in the water tank 2 and closes the water supply valve 9.
  • the predetermined water level L1 is set to a water level that is higher than the water level at which the lower end of the washing tub 3 is in contact with the water surface and lower than the lowest water level that is supplied in a normal washing operation.
  • Control part 22 controls energization to heater 19 based on the output of temperature detection part 21 after water supply, and heats the water stored in the bottom of water tank 2. As a result, steam is generated in the water tank 2. At this time, since the heated water and the lower part of the washing tub 3 are in contact, the washing tub 3 is directly heated with warm water. Therefore, the washing tub 3 having a large mass and heat capacity can be efficiently heated, and the temperature in the water tub 2 can be quickly raised.
  • the control unit 22 rotationally drives the stirring blade 27 almost simultaneously with the energization of the heater 19 or before and after.
  • the washing water stored in the water tank 2 is agitated.
  • the surrounding side surface of the washing tub 3 can be heated entirely with warm water.
  • heated water can be agitated to promote the generation of steam. That is, the water tank 2 can be quickly heated from the low temperature stage during the temperature increase by heating the water in the water tank 2.
  • the inside of the water tank 2 can be sterilized by heating the inside of the water tank 2.
  • control part 22 detects the water temperature of the wash water in the water tank 2 by the temperature detection part 21.
  • the control unit 22 controls the heater 19 to be turned on or off, and maintains the temperature near the set temperature T1 for a predetermined time. In this way, the inside of the water tank 2 is heated to kill the fungi and molds that inhabit the wall surfaces of the water tank 2 and the washing tank 3.
  • the control unit 22 executes the tank sterilization step described above for a predetermined time (for example, 10 minutes after reaching the set temperature T1), and stops energization of the heater 19.
  • control unit 22 executes a tank sterilization step followed by a drainage step.
  • the heated water used in the tank sterilization step is drained.
  • the control unit 22 opens the drain valve 13. As a result, the heated water is drained from the drainage port (not shown) through the drainage path 12 to the outside of the apparatus.
  • control unit 22 executes a rinsing step following the tank sterilization step and the drainage step.
  • dirt such as bacteria, molds, biofilms, etc. killed in the tank sterilization step are peeled off from the wall surface of the water tub 2 or the washing tub 3 and washed away.
  • the control unit 22 opens the water supply valve 9, supplies water into the water tank 2 to the predetermined water level L2 based on the output of the water level detection unit 20, and closes the water supply valve 9. And the control part 22 rotationally drives the stirring blade 27 at high speed. By this rotational drive, a water flow is generated in the water tank 2. And the circumference
  • the control unit 22 executes a draining step following the rinsing step and ends the tank cleaning operation.
  • the water in the water tank 2 is drained outside the apparatus.
  • the water in the water tank 2 includes dirt such as bacteria, molds, biofilms, etc. that have been killed in the tank disinfection step.
  • the control unit 22 opens the drain valve 13 to drain the water in the water tank 2.
  • the stirring blade 27 may be driven to rotate integrally with the washing tub 3.
  • the washing machine of the present embodiment includes the washing tub 3 that is rotatably provided in the water tub 2, the water supply valve 9 that supplies water to the water tub 2, and the water stored in the water tub 2.
  • the heater 19 for heating the water, the water level detection unit 20 for detecting the water level stored in the water tank 2, the washing operation, and the water generated in the water tank are heated by the heating unit, and steam generated by heating
  • a control unit 22 that executes a tank cleaning operation including a tank sterilization step for sterilizing the inside of the water tank.
  • control unit 22 sets the first water level L1 of water stored in the water tank 2 to be lower than the lowest water level set in the washing operation, and from the water level at which the lower end of the washing tank 3 is in contact with the water surface. Control to be higher.
  • the water heated by the heater 19 and the washing tub 3 come into contact with each other, whereby the heat of the heater 19 can be efficiently transmitted to the washing tub 3.
  • the temperature in the water tub 2 can be raised rapidly by the heat radiation of the washing tub 3.
  • the inside of the water tank 2 can be sterilized efficiently.
  • the washing tub 3 disposed in the water tub 2 has a large mass and heat capacity, the temperature in the water tub 2 can be quickly raised by efficiently heating the washing tub 3.
  • the water level stored in the water tank 2 is lower than the lowest water level set in the normal washing operation and higher than the water level at which the lower end of the washing tank 3 is in contact with the water surface. The time and energy required for heating can be reduced.
  • the washing machine according to the present invention is useful as a washing machine because it can efficiently disinfect the water tank.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

L'invention concerne une machine à laver comprenant : une cuve de lavage qui est disposée de façon rotative dans un réservoir d'eau; une unité d'alimentation en eau qui fournit de l'eau au réservoir d'eau; une unité de chauffage qui chauffe l'eau stockée dans le réservoir d'eau; une unité de détection de niveau d'eau qui détecte le niveau de l'eau stockée dans le réservoir d'eau; et une unité de commande qui effectue une opération de lavage et une opération de lavage de réservoir comprenant une étape de stérilisation de réservoir dans laquelle l'eau stockée dans le réservoir d'eau est chauffée par l'unité de chauffage, et l'intérieur du réservoir d'eau est stérilisé au moyen de la vapeur générée par le chauffage. L'unité de commande effectue une commande, au cours de l'étape de stérilisation de réservoir, de façon à régler le premier niveau d'eau de l'eau stockée dans le réservoir d'eau afin qu'il soit inférieur au niveau d'eau le plus bas réglé pour l'opération de lavage, et afin qu'il soit supérieur à un niveau d'eau au niveau duquel l'extrémité inférieure de la cuve de lavage est en contact avec la surface de l'eau.
PCT/JP2019/019201 2018-05-29 2019-05-15 Machine à laver WO2019230384A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020521836A JPWO2019230384A1 (ja) 2018-05-29 2019-05-15 洗濯機

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-102058 2018-05-29
JP2018102058 2018-05-29

Publications (1)

Publication Number Publication Date
WO2019230384A1 true WO2019230384A1 (fr) 2019-12-05

Family

ID=68697180

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/019201 WO2019230384A1 (fr) 2018-05-29 2019-05-15 Machine à laver

Country Status (3)

Country Link
JP (1) JPWO2019230384A1 (fr)
TW (1) TW202003957A (fr)
WO (1) WO2019230384A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112430969A (zh) * 2020-11-20 2021-03-02 珠海格力电器股份有限公司 一种波轮
JP2022026391A (ja) * 2020-07-31 2022-02-10 アイリスオーヤマ株式会社 洗濯機
CN114645430A (zh) * 2020-12-21 2022-06-21 无锡小天鹅电器有限公司 衣物处理设备及其控制方法和存储介质
JP7189638B1 (ja) 2021-06-04 2022-12-14 アイリスオーヤマ株式会社 洗濯機
JP2023011025A (ja) * 2021-06-04 2023-01-20 アイリスオーヤマ株式会社 洗濯機

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005253584A (ja) * 2004-03-10 2005-09-22 Sanyo Electric Co Ltd 洗濯乾燥機
US20100000574A1 (en) * 2008-07-04 2010-01-07 Samsung Electronics Co., Ltd. Control method of washing machine
US20100065086A1 (en) * 2006-07-04 2010-03-18 Lg Electronics Inc. Drum-type washer and tub cleaning method of the same
JP2011019962A (ja) * 2010-10-29 2011-02-03 Sanyo Electric Co Ltd 洗濯機
JP2012085774A (ja) * 2010-10-19 2012-05-10 Panasonic Corp ドラム式洗濯機
JP2013075172A (ja) * 2012-10-29 2013-04-25 Hitachi Appliances Inc ドラム式洗濯機
JP2016019632A (ja) * 2014-07-14 2016-02-04 シャープ株式会社 洗濯機

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005253584A (ja) * 2004-03-10 2005-09-22 Sanyo Electric Co Ltd 洗濯乾燥機
US20100065086A1 (en) * 2006-07-04 2010-03-18 Lg Electronics Inc. Drum-type washer and tub cleaning method of the same
US20100000574A1 (en) * 2008-07-04 2010-01-07 Samsung Electronics Co., Ltd. Control method of washing machine
JP2012085774A (ja) * 2010-10-19 2012-05-10 Panasonic Corp ドラム式洗濯機
JP2011019962A (ja) * 2010-10-29 2011-02-03 Sanyo Electric Co Ltd 洗濯機
JP2013075172A (ja) * 2012-10-29 2013-04-25 Hitachi Appliances Inc ドラム式洗濯機
JP2016019632A (ja) * 2014-07-14 2016-02-04 シャープ株式会社 洗濯機

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022026391A (ja) * 2020-07-31 2022-02-10 アイリスオーヤマ株式会社 洗濯機
JP7199732B2 (ja) 2020-07-31 2023-01-06 アイリスオーヤマ株式会社 洗濯機
JP7469825B2 (ja) 2020-07-31 2024-04-17 アイリスオーヤマ株式会社 洗濯機
CN112430969A (zh) * 2020-11-20 2021-03-02 珠海格力电器股份有限公司 一种波轮
CN114645430A (zh) * 2020-12-21 2022-06-21 无锡小天鹅电器有限公司 衣物处理设备及其控制方法和存储介质
JP7189638B1 (ja) 2021-06-04 2022-12-14 アイリスオーヤマ株式会社 洗濯機
JP2022188785A (ja) * 2021-06-04 2022-12-22 アイリスオーヤマ株式会社 洗濯機
JP2023011025A (ja) * 2021-06-04 2023-01-20 アイリスオーヤマ株式会社 洗濯機
JP7288721B2 (ja) 2021-06-04 2023-06-08 アイリスオーヤマ株式会社 洗濯機

Also Published As

Publication number Publication date
TW202003957A (zh) 2020-01-16
JPWO2019230384A1 (ja) 2021-06-10

Similar Documents

Publication Publication Date Title
WO2019230384A1 (fr) Machine à laver
JP7398678B2 (ja) 洗濯機
RU2303667C2 (ru) Стиральная машина и способ очистки бака для стирки (варианты)
KR100789834B1 (ko) 드럼 세탁기 및 드럼 세탁기의 터브 세척 방법
EP2025794B1 (fr) Machine à laver
WO2009084281A1 (fr) Machine lavante-séchante et dispositif désodorisant
JP6706735B2 (ja) 洗濯機
WO2020003760A1 (fr) Machine à laver
JP6677476B2 (ja) 洗濯機
JP2018029891A (ja) 洗濯機
JP6513978B2 (ja) 洗濯機
KR100692619B1 (ko) 세탁기의 세탁조 관리방법
KR100739611B1 (ko) 드럼 세탁기 및 드럼 세탁기의 터브 세척 방법
TW201111585A (en) Laundry and drying machine
JP2020081347A (ja) 洗濯機
WO2017206938A1 (fr) Machine à laver
JP2014100428A (ja) 洗濯機
JP2020028542A (ja) 洗濯機
JP2020039836A (ja) 洗濯機
JP2005253584A (ja) 洗濯乾燥機
CN111155269A (zh) 衣物处理装置及其控制方法、控制装置
WO2022054477A1 (fr) Machine à laver de type à tambour
JP7174893B2 (ja) 洗濯機
WO2023125408A1 (fr) Dispositif de blanchisserie
JP2003103092A (ja) 洗濯機

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19811063

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2020521836

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: 19811063

Country of ref document: EP

Kind code of ref document: A1