WO2024131320A1 - 洗衣机 - Google Patents

洗衣机 Download PDF

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Publication number
WO2024131320A1
WO2024131320A1 PCT/CN2023/128968 CN2023128968W WO2024131320A1 WO 2024131320 A1 WO2024131320 A1 WO 2024131320A1 CN 2023128968 W CN2023128968 W CN 2023128968W WO 2024131320 A1 WO2024131320 A1 WO 2024131320A1
Authority
WO
WIPO (PCT)
Prior art keywords
water temperature
water
detergent
outer tub
drum
Prior art date
Application number
PCT/CN2023/128968
Other languages
English (en)
French (fr)
Inventor
大槻太郎
Original Assignee
青岛海尔洗衣机有限公司
Aqua株式会社
海尔智家股份有限公司
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 青岛海尔洗衣机有限公司, Aqua株式会社, 海尔智家股份有限公司 filed Critical 青岛海尔洗衣机有限公司
Publication of WO2024131320A1 publication Critical patent/WO2024131320A1/zh

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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 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/36—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of washing
    • 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 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/37—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of metering of detergents or additives
    • 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 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/38—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of rinsing
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/06—Timing arrangements
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/08—Control circuits or arrangements thereof
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/10—Power supply arrangements, e.g. stand-by circuits
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/18—Condition of the laundry, e.g. nature or weight
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/22—Condition of the washing liquid, e.g. turbidity
    • D06F34/24—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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/28—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
    • 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 
    • D06F39/02—Devices for adding soap or other washing agents
    • 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 
    • D06F39/04—Heating arrangements

Definitions

  • the invention relates to a washing machine.
  • Patent Document 1 describes a drum washing machine as an example of such a washing machine.
  • the drum washing machine of Patent Document 1 has a tub that can store water and a drum disposed inside the tub.
  • a water storage portion is provided at the lower portion of the tub, and a heater is disposed in the water storage portion.
  • a specified amount of washing water (a mixture of water and detergent) is stored in the lower portion of the tub, and the water storage portion is filled with washing water.
  • the heater is turned on to heat the washing water.
  • a specified time has passed since the water supply to the tub is terminated, the drum starts to rotate.
  • Patent Document 1 Japanese Patent Application Publication No. 2020-81459
  • the present invention has been made in view of the related technical problems, and an object of the present invention is to provide a washing machine that can easily improve the cleaning effect of laundry by fully exerting the cleaning power of detergent at a water temperature that is a heating target.
  • the main scheme of the present invention is a washing machine comprising: an outer barrel, which is arranged in a casing and stores water; a washing unit, which includes an inner barrel and a driving motor arranged in the outer barrel, and applies mechanical force to the laundry contained in the inner barrel based on the torque generated by the driving motor; a detergent dispensing device, which dispenses detergent into the outer barrel; a heater, which heats the water stored in the outer barrel; a water temperature sensor, which detects the temperature of the water stored in the outer barrel; and a control unit, which controls the operation of the driving motor, the detergent dispensing device and the heater, and performs a washing operation including a washing process, a rinsing process and a dehydration process.
  • the control unit operates the heater to heat the water in the outer barrel, and operates the detergent dispensing device based on the water temperature in the outer barrel detected by the water temperature sensor reaching a specified water temperature, so as to dispense detergent into the outer barrel, and operates the driving motor during a period before the water temperature in the outer barrel reaches the specified water temperature and a period after the water temperature reaches the specified water temperature, so as to apply mechanical force to the laundry in the inner barrel.
  • the inner drum may be a drum configured to rotate around a horizontal rotation axis or a rotation axis inclined relative to the horizontal direction in the outer drum.
  • the washing unit rotates the drum at a rotation speed that causes the laundry in the drum to tumble by the driving motor, thereby applying mechanical force to the laundry.
  • the washing machine of this scheme After the water temperature in the outer drum reaches the specified water temperature, the detergent is put into the outer drum, and the detergent is dissolved in the water of the specified water temperature and becomes a state in which a higher cleaning power is exerted than when the detergent is dissolved in the water of the water temperature when stored in the outer drum. Therefore, by applying mechanical force to the laundry in this state, the cleaning effect of the laundry can be improved.
  • the control unit controls the action of the driving motor so that the mechanical force per unit time after the water temperature in the outer barrel reaches the specified water temperature is stronger than the mechanical force per unit time before the water temperature in the outer barrel reaches the specified water temperature.
  • control unit repeatedly turns on and off for a predetermined time.
  • the ratio of the on time of one cycle after the water temperature in the outer tub reaches the specified water temperature is longer than the ratio of the on time of one cycle before the water temperature in the outer tub reaches the specified water temperature.
  • the drive motor operates with a relatively stronger mechanical force per unit time, so that the laundry can be strongly cleaned using a detergent with a higher cleaning power, thereby achieving a greater cleaning effect.
  • the drive motor operates in a relatively weak mechanical force per unit time, so the power supplied to the drive motor per unit time is reduced, and the temperature rise caused by the heat of the drive motor is reduced. Therefore, even if the temperature rise of the drive motor increases due to the increase in mechanical force per unit time after the specified water temperature is reached, the temperature rise of the drive motor can be suppressed in general. Therefore, the mechanical force applied to the laundry can be fully enhanced after the specified water temperature is reached, and a greater cleaning effect can be achieved.
  • the following structure may be adopted, that is, it is further provided with: a load detection unit for detecting the load of the laundry in the inner tub.
  • the control unit determines the amount of detergent to be put into the outer tub based on the load, and divides the determined amount into a first amount and a second amount greater than the first amount, and puts the first amount of detergent into the outer tub before the water temperature in the outer tub reaches the specified water temperature, and puts the second amount of detergent into the outer tub based on the water temperature in the outer tub reaching the specified water temperature.
  • the main second amount of detergent is put into the outer tub after the water reaches the specified temperature, and before the specified temperature is reached, the first amount of detergent that is smaller than the second amount is put into the outer tub.
  • the cleaning power of the detergent can be exerted before the specified water temperature is reached, and the cleaning effect of the laundry before the specified water temperature is reached can be improved.
  • control unit divides the determined input amount into the first input amount and the second input amount at a preset ratio.
  • the ratio of the first input amount to the second input amount does not change. Therefore, even if the load of laundry changes, the washing effect before and after reaching the specified water temperature is not likely to deviate.
  • the following structure may be adopted, that is, it is further provided with: a load detection unit for detecting the load of the laundry in the inner tub.
  • the control unit determines the amount of detergent to be put into the outer tub based on the load, does not put the detergent into the outer tub before the water temperature in the outer tub reaches the specified water temperature, and puts the determined amount of detergent into the outer tub based on the water temperature in the outer tub reaching the specified water temperature.
  • the entire amount of detergent to be put into the outer tub during the washing process is used in water at a predetermined water temperature, thereby achieving high cleaning power.
  • the present invention it is possible to provide a washing machine that can easily improve the cleaning effect of laundry by fully exerting the cleaning power of the detergent at the water temperature used as the heating target.
  • Fig. 1 is a side cross-sectional view showing the structure of a drum washing machine according to an embodiment.
  • FIG. 2 is a block diagram showing the structure of the drum washing machine according to the embodiment.
  • FIG. 3 is a flowchart showing a control operation of a control unit executed during a load amount detection process according to the embodiment.
  • FIG. 4 is a flowchart showing a control operation of a control unit executed during water supply according to the embodiment.
  • FIG. 5 is a flowchart showing a control operation of a control unit executed during the warm water washing process according to the embodiment.
  • FIG. 6 (a) is a flowchart showing the control operation of the control unit executed during the water supply process of Modification Example 1, and (b) is a flowchart showing the control operation of the control unit executed during the warm water washing process of Modification Example 1.
  • drum washing machine washing machine
  • 10 housing
  • 20 outer drum
  • 23 drum
  • driving motor load detection unit
  • 50 water supply device (detergent feeding device)
  • 60 heater
  • 101 control unit (load detection unit)
  • 105 water temperature sensor
  • WU washing unit
  • FIG. 1 is a side cross-sectional view showing the structure of a drum washing machine 1 .
  • the drum washing machine 1 includes a square housing 10.
  • a circular inlet 11 for putting laundry in is formed on the front surface of the housing 10.
  • the inlet 11 is covered by a door 12 having a substantially disc shape and being openable and closable.
  • An outer barrel 20 is arranged in the box body 10.
  • the outer barrel 20 is elastically supported by a plurality of shock absorbers 21 and springs 22.
  • a horizontal axis type roller 23 is freely rotatably arranged in the outer barrel 20.
  • the roller 23 rotates around a horizontal rotation axis.
  • the roller 23 has a circular opening 23a on its front surface.
  • the roller 23 can also rotate around a rotation axis inclined relative to the horizontal direction.
  • the roller 23 is equivalent to the inner barrel of the present invention.
  • the outer tub 20 has a circular opening 20a on its front surface and in front of the opening 23a of the drum 23.
  • the peripheral edge 20b of the opening 20a of the outer tub 20 is connected to the peripheral edge 11a of the inlet 11 of the box 10 through an annular door gasket 24 made of elastic material.
  • the peripheral surface of the closed door 12 contacts the door gasket 24, and the inlet 11 and the door 12 are water-sealed.
  • a large number of dehydration holes 23b are formed on the inner peripheral surface of the drum 23.
  • three lifting ribs 25 having a substantially triangular prism shape are provided on the inner peripheral surface of the drum 23 at equal intervals in the circumferential direction.
  • a drive motor 30 for generating a torque for rotating the drum 23 is arranged at the rear of the outer tub 20.
  • the drive motor 30 is, for example, an outer rotor type DC brushless motor.
  • the drive motor 30 rotates the drum 23 at a rotation speed such that the centrifugal force applied to the laundry in the drum 23 is less than the gravity and the laundry tumbling during the washing process and the rinsing process.
  • the drive motor 30 rotates the drum 23 at a rotation speed such that the centrifugal force applied to the laundry in the drum 23 is much greater than the gravity and the laundry adheres to the inner circumference of the drum 23 during the dehydration process.
  • the drum 23 and the driving motor 30 constitute a washing unit WU.
  • the washing unit WU is driven by the driving motor
  • the drive motor 30 rotates the drum 23 at a rotation speed that causes the laundry in the drum 23 to tumble, thereby applying a mechanical force based on the torque generated by the drive motor 30 to the laundry in the drum 23 .
  • a drain outlet 20b is formed at the bottom of the outer barrel 20.
  • a drain portion 40 for draining water from the outer barrel 20 is connected to the drain outlet 220b.
  • the drain portion 40 is composed of a drain valve 41, a drain hose 42, and a drain filter 43.
  • the drain outlet 220b is connected to the drain valve 41.
  • the drain valve 41 includes, for example, a valve and a torque motor for opening and closing the valve.
  • the drain filter 43 is arranged downstream of the drain valve 41.
  • the drain filter 43 is connected to the drain hose 42.
  • a water supply device 50 is disposed at the upper portion of the housing 10.
  • the water supply device 50 supplies water into the outer tub 20.
  • the water supply device 50 has a function of automatically injecting detergent into the outer tub 20. That is, the water supply device 50 is also a detergent injecting device.
  • the water supply device 50 includes a water supply valve 51 , a water supply hose 52 , a water inlet member 53 , a detergent tank 54 , a water channel forming member 55 , a detergent pump 56 , and a water inlet pipe 57 .
  • the inlet of the water supply valve 51 is connected to a faucet via a connection hose (not shown).
  • the outlet of the water supply valve 51 is connected to the inlet of the water supply hose 52 .
  • the water inlet member 53 has a box shape with the front surface and the upper surface opened.
  • a water inlet 53a is provided at the bottom of the water inlet member 53.
  • the water inlet 53a is connected to the upper end of the water inlet pipe 57.
  • the lower end of the water inlet pipe 57 is connected to the outer tub 20.
  • the detergent box 54 is accommodated in the water inlet member 53.
  • the liquid detergent is stored in the detergent box 54 in the state of raw liquid. The user can pull the detergent box 54 out to the front of the housing 10 when replenishing the detergent in the detergent box 54.
  • the water channel forming member 55 is arranged on the upper surface of the water inlet member 53.
  • a water supply channel 55a extending forward from the rear end of the water channel forming member 55 and a water injection chamber 55b connected to the water supply channel 55a are formed inside the water channel forming member 55.
  • the outlet of the water supply hose 52 is connected to the inlet of the water supply channel 55a.
  • a plurality of water injection holes connected to the inside of the water inlet member 53 are formed on the bottom surface of the water injection chamber 55b.
  • a gap is formed inside the water inlet member 53 below the detergent box 54 , and the gap serves as a flow path 53 b for water discharged from the water inlet chamber 55 b of the water path forming member 55 .
  • the detergent pump 56 has a suction port connected to the detergent box 54 via a suction pipe 56 a , and a discharge port connected to the water supply path 55 a of the water path forming member 55 via a discharge pipe 56 b .
  • the water supply valve 51 When water is supplied to the outer tub 20 during the washing process or the rinsing process, the water supply valve 51 is opened. Water from the faucet flows into the water supply path 55a of the water path forming member 55 via the water supply valve 51 and the water supply hose 52. The water flowing into the water supply path 55a flows into the water injection chamber 55b and is discharged from the water injection chamber 55b to the inside of the water injection port member 53. The water discharged into the water injection port member 53 flows through the flow path 53b and is supplied to the outer tub 20 via the water injection port 53a and the water injection pipe 57. When the water in the outer tub 20 is stored to the washing water level or the rinsing water level, the water supply valve 51 is locked.
  • the detergent in the detergent box 54 is sent to the water supply path 55a by the action of the detergent pump 56 before the water supply valve 51 is opened. Thereafter, when the water supply valve 51 is opened, the detergent in the water supply path 55a is washed away by the water flowing through the water supply path 55a and is added into the outer tub 20 together with the water.
  • the detergent pump 56 is operated, and the detergent in the detergent box 54 is sent to the water supply path 55a.
  • the water supply valve 51 is opened, and the detergent in the water supply path 55a is flushed away by the water flowing through the water supply path 55a and put into the outer tub 20.
  • the water supply valve 51 is locked.
  • a softener box (not shown) storing liquid softener can be arranged next to the detergent box 54 in the water inlet member 53.
  • the softener in the softener box is sent to the water supply path 55a of the water path forming member 55 by a softener pump (not shown).
  • the softener in the water supply path 55a is washed away by the water flowing through the water supply path 55a and is put into the outer tub 20 together with the water.
  • a heater 60 is disposed at the bottom of the outer tub 20 .
  • the heater 60 heats the water stored in the outer tub 20 .
  • FIG. 2 is a block diagram showing the structure of drum washing machine 1 .
  • the drum washing machine 1 further includes a control unit 101, a storage unit 102, an operation unit 103, a display unit 104, a water level sensor 105, a water temperature sensor 106, a motor drive unit 107, a water supply drive unit 108, a drainage drive unit 109, a pump drive unit 110 and a heater drive unit 111.
  • the operation unit 103 includes: a power button for connecting and disconnecting the power supply; a mode selection button for selecting any operation mode from a plurality of operation modes of the washing operation; and a start button for starting the washing operation. The washing operation is started and paused.
  • the operation unit 103 outputs an input signal corresponding to the button operated by the user to the control unit 101.
  • Display unit 104 includes a light emitting element such as an LED or a display such as a liquid crystal panel, and displays a selected operation mode, the progress of the washing operation, and notifies abnormalities based on a control signal from control unit 101 .
  • the operation unit 103 and the display unit 104 may be constituted by an operation display unit such as a touch panel.
  • the water level sensor 105 detects the water level in the outer tub 20 and outputs a water level signal corresponding to the water level to the control unit 101.
  • the water temperature sensor 106 detects the temperature of the water in the outer tub 20 and outputs a water temperature signal corresponding to the water temperature to the control unit 101.
  • the motor driving unit 107 drives the drive motor 30 according to the control signal from the control unit 101.
  • the motor driving unit 107 includes a rotation sensor for detecting the rotation speed of the drive motor 30, an inverter circuit, etc., and adjusts the drive power so that the drive motor 30 rotates at the rotation speed set by the control unit 101.
  • the motor driving unit 107 includes a current sensor for detecting the current flowing to the drive motor 30.
  • the water supply drive unit 108 drives the water supply valve 51 according to a control signal from the control unit 101.
  • the water discharge drive unit 109 drives the water discharge valve 41 according to a control signal from the control unit 101.
  • the pump driving unit 110 drives the detergent pump 56 according to a control signal from the control unit 101.
  • the heater driving unit 111 drives the heater 60 according to a control signal from the control unit 101.
  • the storage unit 102 includes an EEPROM (Electrically Erasable Programmable Read Only Memory), a RAM (Random Access Memory), etc.
  • the storage unit 102 stores programs for executing washing operations in various operation modes.
  • the storage unit 102 stores various parameters and various control flags for executing these programs.
  • the control unit 101 includes a CPU (central processing unit) and the like, and controls the display unit 104, the motor driver 107, the water supply driver 108, the drainage driver 109, the pump driver 110, and the heater driver 111 and the like based on various signals from the operation unit 103, the water level sensor 105, the water temperature sensor 106, and the like, and according to a program stored in the storage unit 101.
  • the control unit 101 controls the operation of the drive motor 30, the water supply device 50 as the detergent feeding device, and the heater 60.
  • the washing operation of various operation modes is performed under the control of the control unit 101.
  • the washing process, the intermediate dehydration process, the rinsing process and the final dehydration process are performed in sequence. Depending on the operation mode, sometimes two operations are performed. The above rinsing process and intermediate dehydration process.
  • water containing detergent is accumulated in the outer tub 20 to a washing water level corresponding to the load of the laundry contained in the drum 23, and the laundry immersed in the water is tumbled by repeatedly rotating the drum 23 forward and reversely.
  • the water containing detergent penetrates into the laundry, and the dirt attached to the surface and inside of the laundry is removed by the cleaning power of the detergent and the mechanical force generated by the rotation of the drum 23, i.e., the tumbling.
  • the driving motor 30 rotates unidirectionally at a high speed
  • the drum 23 rotates unidirectionally at a speed at which the centrifugal force acting on the laundry in the drum 23 is much greater than the gravity.
  • the laundry is pressed against the inner circumference of the drum 23 by the centrifugal force and dehydrated.
  • the drum 23 rotates at a speed higher than that in the intermediate dehydration process.
  • the operation mode executed in drum washing machine 1 of the present embodiment includes a warm water washing mode for washing laundry with warm water.
  • the washing operation in the warm water washing mode will be described in detail below.
  • the user After the user puts the laundry into drum 23, the user selects the warm water washing mode by the mode selection button on operation unit 103 and presses the start button. Thus, the washing operation in the warm water washing mode starts.
  • a load amount detection process for detecting the load amount of laundry in drum 23 is performed.
  • FIG. 3 is a flowchart showing a control operation of the control unit 101 executed during the load amount detection process.
  • Control unit 101 starts load detection drum rotation and drives motor 30 to rotate drum 23 at a rotation speed (eg, 180 rpm) at which laundry adheres to the inner peripheral surface of drum 23 (S101).
  • a rotation speed eg, 180 rpm
  • the control unit 101 detects the load of the laundry based on the load applied to the drum 23 (S102). For example, the control unit 101 detects the current flowing through the drive motor 30 through a current sensor, and determines the load based on the magnitude of the current. The greater the load of the laundry, the greater the load applied to the drum 23, and the greater the current flowing through the drive motor 30.
  • control unit 101 ends the rotation of the load amount detection drum and stops the drum 23 (S103).
  • the storage unit 102 stores a detergent dosage table that associates the amount D of detergent put into the outer tub 20 with the load amount.
  • the control unit 101 refers to the detergent dosage table and determines the amount D of detergent put in based on the detected load amount (S104). In this way, the load amount detection process ends.
  • drum 23, the drive motor 30, and the control unit 101 constitute a load amount detection unit of the present invention.
  • the washing process is performed.
  • the water supply process, the warm water washing process and the drainage process are performed in sequence.
  • FIG. 4 is a flowchart showing the control operation of the control unit 101 executed during the water supply process.
  • the control unit 101 When the water supply process starts, the control unit 101 operates the detergent pump 56 to inject a first amount of detergent into the outer tub 20, and delivers the first amount of detergent from the detergent box 54 to the water supply path 55a of the water path forming member 55 (S201). Before the detergent is injected, the control unit 101 divides the amount of detergent input D determined in the load detection process into a first amount and a second amount greater than the first amount at a certain ratio. For example, the ratio of the first amount to the second amount can be set to 3 to 7.
  • control unit 101 opens the water supply valve 51 (S202). Water from the faucet is supplied to the outer tub 20, and the detergent in the water supply path 55a is washed away by the water and poured into the outer tub 20. It should be noted that, through the processing of steps S201 and S202, the control unit 101 operates the water supply device 50 to pour a first amount of detergent (for example, 30% of the amount D) into the outer tub 20.
  • a first amount of detergent for example, 30% of the amount D
  • the control unit 101 determines whether the water level in the outer tub 20 has reached the water absorption start water level (S203).
  • the water absorption start water level is a water level at which the bottom of the drum 23 is slightly immersed in water and is a water level lower than the washing water level.
  • the control unit 101 starts the rotation of the water absorption drum, and drives the motor 30 to rotate the drum 23 alternately in the right direction and the left direction at a first speed by repeatedly turning on the first on time and turning off the first off time (S204).
  • the first on time is set to 10 seconds, for example, and the first off time is set to 10 seconds, for example.
  • the first speed is the speed at which the laundry will tumble in the drum 23, and is set to 45 rpm, for example.
  • the laundry is agitated to fully absorb the water in drum 23, and the water permeates throughout the laundry.
  • the control unit 101 stops the rotation of the water absorption drum and stops the drum 23 (S206).
  • control unit 101 closes the water supply valve 51 (S207), thereby stopping the water supply to the outer tub 20.
  • the water stored in the outer tub 20 contains the first amount of detergent.
  • FIG. 5 is a flowchart showing the control operation of the control unit 101 executed during the warm water washing process.
  • the control unit 101 activates the heater 60 (S301). This starts heating the water in the outer tub 20. After the heating starts, the water temperature in the outer tub 20 is continuously detected by the water temperature sensor 106.
  • the control unit 101 starts the detergent dissolving drum rotation, and drives the motor 30 to rotate the drum 23 alternately in the right direction and the left direction at the second speed by repeatedly turning on the second on time and turning off the second off time (S302).
  • the second on time is set to 10 seconds, for example, and the second off time is set to 10 seconds, for example.
  • the second speed is set to 45 rpm, for example.
  • the water in the outer barrel 20 is stirred by the rotation of the drum 23, and the detergent is well dissolved in the water.
  • control unit 101 ends the detergent dissolution drum rotation and stops drum 23 (S304).
  • the control unit 101 starts the hot water drum rotation, and drives the motor 30 to rotate the drum 23 alternately in the right direction and the left direction at the third speed by repeatedly turning on the third on time and turning off the third off time (S305).
  • the third on time is set to 10 seconds, for example, and the third off time is set to 290 seconds, for example.
  • the third speed is the speed at which the laundry tumbles in the drum 23, and is set to 30 rpm, for example.
  • the third off time is significantly longer than the second off time.
  • the water in the outer tub 20 is stirred by the rotation of the drum 23, and the water temperature becomes uniform. Furthermore, the laundry in the drum 23 is cleaned by the mechanical force applied by the tumbling and the cleaning power exerted by the detergent.
  • the control unit 101 determines whether the water temperature in the outer tub 20 reaches a predetermined water temperature (S306).
  • the detergent contained in the detergent box 54 includes a surfactant as a main agent and an enzyme as an additive. Before the water temperature reaches a certain level, the detergent, i.e., the surfactant and the enzyme, exerts a higher cleaning power as the water temperature increases. In particular, the surfactant and the enzyme are activated by using them in warm water at about 40°C, and are easy to exert the highest cleaning power.
  • the predetermined water temperature may be set to a temperature (e.g., 40° C.) at which the detergent, i.e., the surfactant or enzyme contained in the detergent, is activated and easily exhibits high cleaning power.
  • the predetermined water temperature may also be set to a higher temperature than the above water temperature. Low water temperature.
  • the warm water washing mode is a mode that does not want to take a long time
  • the water temperature of about 30°C can be set as the specified water temperature.
  • the warm water washing mode is a mode used when the water supply temperature is very low in winter, etc.
  • the water temperature of about 20°C can be set as the specified water temperature.
  • the water temperature rises to the predetermined water temperature in, for example, about 30 minutes to 60 minutes.
  • the control unit 101 When the water temperature in the outer tub 20 reaches the specified water temperature (S306: Yes), the control unit 101 operates the water supply device 50 to inject a second amount of detergent (for example, 70% of the amount D) into the outer tub 20 (S307). That is, after the control unit 101 operates the detergent pump 56 to send the second amount of detergent from the detergent box 54 to the water supply path 55a of the water path forming member 55, it opens the water supply valve 51 to supply water into the water supply path 55a, and the detergent is sent to the outer tub 20 through the water. When the detergent is injected into the outer tub 20, the control unit 101 locks the water supply valve 51.
  • a second amount of detergent for example, 70% of the amount D
  • the detergent is mainly added after the water temperature reaches a predetermined temperature, it is ideal that the second amount of addition is at least twice the first amount of addition.
  • the water temperature in the outer tub 20 reaches the specified water temperature, so when the second amount of detergent added to the outer tub 20 dissolves in the water in the outer tub 20, it will be in a state where high cleaning power can be fully exerted compared to the case where the detergent is added before the specified water temperature is reached.
  • the specified water temperature is set to a water temperature of about 40°C, the detergent is fully activated and becomes the state where the cleaning power is most easily exerted.
  • control unit 101 stops the detergent dissolving drum rotation, stops drum 23 (S308), and stops heater 60 (S309).
  • the control unit 101 starts the formal washing drum rotation, and drives the motor 30 to rotate the drum 23 alternately in the right direction and the left direction at a fourth speed by repeatedly turning on the fourth on time and turning off the fourth off time (S310).
  • the fourth on time is set to 20 seconds, for example, and the fourth off time is set to 5 seconds, for example.
  • the fourth speed is set to a speed at which the laundry will tumble in the drum 23, for example, 45 rpm.
  • the fourth on time is set to be longer than the third on time
  • the fourth off time is set to be shorter than the third off time. That is, the control unit 101 makes the ratio of the on time of one cycle after the water temperature in the outer tub 20 reaches the specified water temperature longer than the ratio of the on time of one cycle before the water temperature reaches the specified water temperature.
  • the fourth speed is set to be higher than the third speed. That is, the control unit 101 The rotation speed of the drum 23 during the period after the predetermined water temperature is reached is made higher than the rotation speed of the drum 23 during the period before the predetermined water temperature is reached.
  • the mechanical force per unit time applied to the laundry by the rotation of the drum 23 is greater during the period after the predetermined water temperature is reached than during the period before the predetermined water temperature is reached.
  • the laundry in the drum 23 is fully cleaned by the large mechanical force applied by the tumbling of the main washing drum during rotation and the high cleaning power exerted by the detergent added after the water reaches a predetermined temperature. Thus, dirt on the laundry is well removed.
  • the control unit 101 ends the main washing drum rotation and stops the drum 23 (S312). In this way, the warm water washing process ends.
  • the drainage valve 41 is opened to drain water from the outer tub 20. When the drainage is completed, the drainage valve 41 is locked.
  • the washing process ends.
  • the intermediate dehydration process, the rinsing process and the final dehydration process are sequentially performed, and the washing operation of the warm water washing mode ends.
  • the control unit 101 operates the heater 60 to heat the water in the outer tub 20 during the washing process, and operates the water supply device 50 as a detergent injection device based on the water temperature in the outer tub 20 detected by the water temperature sensor 106 reaching the specified water temperature, and injects detergent into the outer tub 20. Furthermore, the control unit 101 operates the drive motor 30 before and after the water temperature in the outer tub 20 reaches the specified water temperature, and applies mechanical force to the laundry in the drum 23 by rotating the drum 23 in which the laundry tumbles.
  • the surfactant contained in the detergent has an effect of preventing the laundry from being recontaminated, but for detergent added after the water temperature reaches the specified temperature, the time for maintaining the anti-recontamination effect does not extend until the end of the washing process. Therefore, there is no need to worry about the laundry being recontaminated due to the reduction of the anti-recontamination effect.
  • control unit 101 controls the operation of the drive motor 30 so that the mechanical force per unit time after the water temperature in the outer barrel 20 reaches the specified water temperature is stronger than the mechanical force per unit time before the water temperature in the outer barrel 20 reaches the specified water temperature.
  • the drive motor 30 operates with a relatively stronger mechanical force per unit time, so that the laundry can be strongly cleaned using a detergent with a higher cleaning power, thereby achieving a greater cleaning effect.
  • the drive motor 30 operates in a relatively weak mechanical force per unit time, so the power supplied to the drive motor 30 per unit time is reduced, and the temperature rise caused by the heat of the drive motor 30 is reduced. Therefore, even if the temperature rise of the drive motor 30 becomes larger due to the increase in mechanical force per unit time in the period after the predetermined water temperature is reached, the temperature rise of the drive motor 30 can be suppressed in general. Therefore, the mechanical force applied to the laundry can be fully enhanced in the period after the predetermined water temperature is reached, and a greater cleaning effect can be achieved.
  • the control unit 101 determines the amount D of detergent to be put into the outer tub 20 based on the load, and divides the determined amount D into a first amount and a second amount greater than the first amount. Furthermore, the control unit 101 puts the first amount of detergent into the outer tub 20 before the water temperature in the outer tub 20 reaches a predetermined water temperature, and puts the second amount of detergent into the outer tub 20 when the water temperature in the outer tub 20 reaches the predetermined water temperature.
  • the main second amount of detergent is put into the outer tub 20 after the specified water temperature is reached, and before the specified water temperature is reached, the first amount of detergent that is smaller than the second amount is put into the outer tub 20.
  • the cleaning power of the detergent can be exerted before the specified water temperature is reached, and the cleaning effect of the laundry before the specified water temperature is reached can be improved.
  • control unit 101 divides the input amount D into the first input amount and the second input amount at a preset ratio.
  • the ratio of the first input amount to the second input amount does not change. Therefore, even if the load of laundry changes, the washing effect before and after reaching the specified water temperature is not likely to deviate.
  • Fig. 6(a) is a flowchart showing the control operation of the control unit 101 executed during the water supply process according to Modification 1.
  • Fig. 6(b) is a flowchart showing the control operation of the control unit 101 executed during the warm water washing process according to Modification 1.
  • the control unit 101 determines the amount D of detergent to be put into the outer tub 20 based on the load, and divides the determined amount D into a first amount and a second amount greater than the first amount. Furthermore, the control unit 101 puts the first amount of detergent into the outer tub 20 before the water temperature in the outer tub 20 reaches a predetermined water temperature, and puts the second amount of detergent into the outer tub 20 when the water temperature in the outer tub 20 reaches the predetermined water temperature.
  • control unit 101 does not inject detergent into the outer tub 20 before the water temperature in the outer tub 20 reaches a specified water temperature, and injects an amount D of detergent determined based on the load into the outer tub 20 after the water temperature in the outer tub 20 reaches the specified water temperature.
  • the control unit 101 does not put detergent into the outer tub 20, but opens the water supply valve 51 to start supplying water into the outer tub 20 (S202). Furthermore, as shown in FIG. 6 (b), during the warm water washing process, the control unit 101 operates the heater 60 (S301) and does not rotate the detergent dissolving drum but starts the hot water drum rotation (S305). Then, when the water temperature in the outer tub 20 reaches the specified water temperature (S306: Yes), the control unit 101 operates the water supply device 50 to put the detergent of the input amount D into the outer tub 20 (S321).
  • the ratio during the period after the water temperature in the outer tub 20 reaches the specified water temperature is longer than the ratio during the period before reaching the specified water temperature, so the fourth on-time is longer than the third on-time, and the fourth off-time is shorter than the third off-time.
  • the fourth on-time is longer than the third on-time, and the fourth off-time is equal to the third off-time.
  • the fourth rotational speed and the third rotational speed may be set to be equal to each other as long as the mechanical force per unit time applied to the laundry by the rotation of the drum 23 after the predetermined water temperature is reached is greater than the mechanical force per unit time before the predetermined water temperature is reached.
  • the first amount of detergent is put into the outer tub 20 during the water supply process.
  • the first amount of detergent may be put into the outer tub 20 just before or just after the heater 60 starts heating the water during the warm water washing process.
  • the control unit 101 continues to detect the water temperature through the water temperature sensor 106 and performs on-off control of the heater 60 in a manner to maintain the specified water temperature.
  • the water supply device 50 as the detergent dispensing device adopts the following structure: the liquid detergent in the detergent box 54 is sent to the water supply path 55a of the water path forming member 55, and the detergent is washed away by the water flowing through the water supply path 55a, thereby dispensing the detergent into the outer barrel 20.
  • the structure of the detergent dispensing device is not limited to such a structure.
  • the detergent supply device may also be composed of a water supply device having the following components: a detergent box, into which the amount D of detergent is supplied at one time; a first water supply path, through which water is supplied to the outer barrel 20 via the detergent box; a second water supply path, through which water is supplied to the outer barrel 20 without passing through the detergent box; a first water supply valve, for causing water to flow to the first water supply path; and a second water supply valve, for causing water to flow to the second water supply path.
  • the second water supply valve is opened.
  • the first water supply valve is opened.
  • a drum washing machine 1 is illustrated.
  • the present invention can also be applied to a fully automatic washing machine.
  • a washing and dehydrating barrel having a pulsator at the bottom and capable of rotating around a vertical axis is arranged in an outer barrel as an inner barrel.
  • the washing unit includes a washing and dehydrating barrel and a pulsator, and a driving motor that generates a torque for driving them.
  • the washing unit rotates the pulsator by a driving motor in the washing and dehydrating barrel in which water is stored, thereby applying a mechanical force to the laundry.
  • the present invention can also be applied to a drum-type washer-dryer and a fully automatic washer-dryer with a drying function.

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Abstract

一种滚筒洗衣机，具备：洗涤单元，包括滚筒(23)和驱动马达(30)，洗涤单元基于驱动马达(30)所产生的转矩来对滚筒(23)内的洗涤物施加机械力；洗涤剂投入装置(50)，将洗涤剂投入至外桶(20)内；加热器(60)，加热蓄于外桶(20)内的水；水温传感器(106)，检测蓄于外桶(20)内的水的温度；以及控制部(101)，对驱动马达(30)、洗涤剂投入装置(50)以及加热器(60)的动作进行控制。控制部(101)在清洗过程中使加热器(60)工作来加热外桶(20)内的水，并基于外桶(20)内的水温达到规定水温而使洗涤剂投入装置(50)工作，将洗涤剂投入至外桶(20)内，在外桶(20)内的水温达到规定水温前的期间和外桶(20)内的水温达到规定水温后的期间使驱动马达(30)工作，对滚筒(23)内的洗涤物施加机械力。

Description

洗衣机 技术领域
本发明涉及一种洗衣机。
背景技术
以往，已知一种使用温水进行洗涤物的洗净的洗衣机。专利文献1中记载了作为这种洗衣机的一个例子的滚筒洗衣机。
专利文献1的滚筒洗衣机具有能蓄水的桶(tub)和配置于桶的内部的滚筒。在桶的下部设置有蓄水部，在该蓄水部配置有加热器。当清洗过程开始时，向桶内进行供水，并与该供水一起从药剂投入装置向桶内投入洗涤剂。在桶的下部蓄有规定量的清洗水(水和洗涤剂的混合水)，蓄水部充满清洗水。当蓄水部充满清洗水时，加热器工作(ON)而对清洗水进行加热。当从向桶内进行的供水结束起经过规定时间时，滚筒开始旋转。
在上述的滚筒洗衣机中，在清洗过程中，在向桶内供水时，将该清洗过程中使用的全部量的洗涤剂投入至桶内。因此，存在如下的隐患：在通过滚筒的旋转对洗涤物施加机械力从而进行洗涤物的洗净时，从桶内呈刚供水后的低水温的状态时起就发挥洗涤剂的洗净力，当桶内达到作为加热目标的水温后，无法充分发挥在该水温下本该发挥的洗涤剂的洗净力。
现有技术文献
专利文献
专利文献1：日本特开2020－81459号公报
发明内容
发明所要解决的问题
本发明是鉴于相关技术问题而完成的，其目的在于提供一种通过在作为加热目标的水温下充分发挥洗涤剂的洗净力来使得洗涤物的洗净效果容易提高的洗衣机。
用于解决问题的方案
本发明的主要的方案的洗衣机具备：外桶，配置于箱体内，蓄留水；洗涤单元，包括配置于所述外桶内的内桶和驱动马达，基于所述驱动马达所产生的转矩来对容纳于所述内桶内的洗涤物施加机械力；洗涤剂投入装置，将洗涤剂投入至所述外桶内；加热器，加热蓄于所述外桶内的水；水温传感器，检测蓄于所述外桶内的水的温度；以及控制部，对所述驱动马达、所述洗涤剂投入装置以及所述加热器的动作进行控制，执行包括清洗过程、漂洗过程以及脱水过程的洗涤运转。其中，所述控制部在所述清洗过程中使所述加热器工作来加热所述外桶内的水，并基于由所述水温传感器检测出的所述外桶内的水温达到规定水温而使所述洗涤剂投入装置工作，将洗涤剂投入至所述外桶内，在所述外桶内的水温达到所述规定水温之前的期间和达到所述规定水温之后的期间使所述驱动马达工作，对所述内桶内的洗涤物施加机械力。
例如，所述内桶可以采用配置为能在所述外桶内绕水平的旋转轴或相对于水平方向倾斜的旋转轴旋转的滚筒。在该情况下，所述洗涤单元通过所述驱动马达来以所述滚筒内的洗涤物会翻滚的转速使所述滚筒旋转，由此对洗涤物施加机械力。
根据本方案的洗衣机，在外桶内的水温达到规定水温后将洗涤剂投入至外桶内，该洗涤剂溶入规定水温的水中而成为与溶入蓄于外桶内时的水温的水中相比发挥更高的洗净力的状态。因此，通过在这种状态下对洗涤物施加机械力，能提高洗涤物的洗净效果。
在本方案的洗衣机中，可以采用如下结构：所述控制部对所述驱动马达的动作进行控制，使得所述外桶内的水温达到所述规定水温后的期间的每单位时间的机械力比所述外桶内的水温达到所述规定水温前的期间的每单位时间的机械力强。
例如，控制部在以反复进行规定时间的接通和规定时间的断开的方式通过 驱动马达使滚筒旋转的情况下，使外桶内的水温达到规定水温后的期间的一个周期的接通时间的比率比外桶内的水温达到规定水温前的期间的一个周期的接通时间的比率长。
根据该结构，在达到规定水温后的期间，驱动马达以每单位时间的机械力相对变强的方式工作，因此能使用洗净力变高的洗涤剂来强力洗净洗涤物，能发挥较大的洗净效果。
进而，在达到规定水温前的期间，驱动马达以每单位时间的机械力相对变弱的方式工作，因此供给至驱动马达的每单位时间的电力变少，由驱动马达的发热引起的温度上升变小。因此，即使在达到规定水温后的期间由于每单位时间的机械力变强而使得驱动马达的温度上升变大，综合而言也能抑制驱动马达的温度上升。因此，能在达到规定水温后的期间充分增强施加于洗涤物的机械力，能发挥更大的洗净效果。
在本方案的洗衣机中，可以采用如下结构，即，还具备：负荷量检测部，检测所述内桶内的洗涤物的负荷量。在该情况下，可以采用如下结构：所述控制部基于所述负荷量来确定要向所述外桶内投入的洗涤剂的投入量，并将确定出的所述投入量分为第一投入量和比所述第一投入量多的第二投入量，在所述外桶内的水温达到所述规定水温前将所述第一投入量的洗涤剂投入至所述外桶内，并基于所述外桶内的水温达到所述规定水温而将所述第二投入量的洗涤剂投入至所述外桶内。
根据该结构，在清洗过程中应投入至外桶内的投入量中，主要的第二投入量的洗涤剂在达到规定水温后被投入至外桶内，而在达到规定水温前，比第二投入量少的第一投入量的洗涤剂被投入至外桶内。由此，在达到规定水温前也能发挥洗涤剂的洗净力，能提高达到规定水温前的洗涤物的洗净效果。
在上述结构的情况下，可以进一步采用如下结构：所述控制部将确定出的所述投入量以预先设定的比率分为所述第一投入量和所述第二投入量。
根据该结构，即使投入量根据洗涤物的负荷量而发生变化，第一投入量与第二投入量的占比也不会变化。因此，即使洗涤物的负荷量发生变化，达到规定水温前和达到规定水温后的洗净效果也不容易产生偏差。
在本方案的洗衣机中，可以采用如下结构，即，还具备：负荷量检测部，检测所述内桶内的洗涤物的负荷量。在该情况下，可以采用如下结构：所述控制部基于所述负荷量来确定要向所述外桶内投入的洗涤剂的投入量，在所述外桶内的水温达到所述规定水温前不将洗涤剂投入至所述外桶内，基于所述外桶内的水温达到所述规定水温而将确定出的所述投入量的洗涤剂投入至所述外桶内。
根据上述的结构，在清洗过程中应投入至外桶内的全部投入量的洗涤剂会在规定水温的水中内使用，由此能发挥高洗净力。
发明效果
根据本发明，能提供一种通过在作为加热目标的水温下充分发挥洗涤剂的洗净力来使得洗涤物的洗净效果容易提高的洗衣机。
本发明的效果和意义将通过以下所示的实施方式的说明会更加明了。不过，以下实施方式仅仅是实施本发明时的一个示例，本发明不受以下的实施方式中所记载的内容的任何限制。
附图说明
图1是表示实施方式的滚筒洗衣机的结构的侧面剖视图。
图2是表示实施方式的滚筒洗衣机的结构的框图。
图3是表示实施方式的在负荷量检测过程中执行的控制部的控制动作的流程图。
图4是表示实施方式的在供水过程中执行的控制部的控制动作的流程图。
图5是表示实施方式的在温水洗净过程中执行的控制部的控制动作的流程图。
图6中，(a)是表示变更例1的在供水过程中执行的控制部的控制动作的流程图，(b)是表示变更例1的在温水洗净过程中执行的控制部的控制动作的流程图。
附图标记说明
1：滚筒洗衣机(洗衣机)；10：箱体；20：外桶；23：滚筒(内桶、负荷
量检测部)；30：驱动马达(负荷量检测部)；50：供水装置(洗涤剂投入装置)；60：加热器；101：控制部(负荷量检测部)；105：水温传感器；WU：洗涤单元。
具体实施方式
以下，参照附图对本发明的洗衣机的一个实施方式进行说明。
图1是表示滚筒洗衣机1的结构的侧面剖视图。
滚筒洗衣机1具备方形的箱体10。在箱体10的前表面形成有供洗涤物投入的圆形的投入口11。投入口11由具有大致圆盘状的开闭自如的门12覆盖。
在箱体10内配置有外桶20。外桶20由多个减振器21和弹簧22弹性支承。在外桶20内旋自如地配置有横轴型的滚筒23。滚筒23绕水平的旋转轴旋转。滚筒23在其前表面具有圆形的开口部23a。滚筒23也可以绕相对于水平方向倾斜的旋转轴旋转。滚筒23相当于本发明的内桶。
外桶20在其前表面且在滚筒23的开口部23a的前方具有圆形的开口部20a。外桶20的开口部20a的周缘部20b与箱体10的投入口11的周缘部11a通过由弹性材料构成的环状的门衬垫24连结。关闭的门12的周面与门衬垫24接触，投入口11与门12之间被水封。
在滚筒23的内周面形成有许多脱水孔23b。此外，在滚筒23的内周面沿周向等间隔地设有具有大致三棱柱形状的三个提升筋25。
在外桶20的后方配置有产生用于使滚筒23旋转的转矩的驱动马达30。驱动马达30例如为外转子型的DC无刷马达。驱动马达30在清洗过程和漂洗过程时以施加于滚筒23内的洗涤物的离心力小于重力而洗涤物会翻滚(tumbling)的转速使滚筒23旋转。另一方面，驱动马达30在脱水过程时以施加于滚筒23内的洗涤物的离心力远大于重力而洗涤物会贴附于滚筒23的内周面的转速使滚筒23旋转。
由滚筒23和驱动马达30构成洗涤单元WU。洗涤单元WU通过驱动马达 30来使滚筒23以滚筒23内的洗涤物会翻滚的转速旋转，由此对容纳于滚筒23内的洗涤物施加基于驱动马达30所产生的转矩的机械力。
在外桶20的底部形成有排水口部20b。在排水口部220b连接有从外桶20内进行排水的排水部40。排水部40由排水阀41、排水软管42以及排水过滤器43构成。排水口部220b与排水阀41连接。排水阀41例如包括阀门和使阀门开闭的力矩马达。排水过滤器43设置于排水阀41的下游。排水过滤器43与排水软管42连接。当排水阀41打开时，蓄于外桶20内的水经过排水口部20b、排水过滤器43以及排水软管42向机外排出。线屑(lint)等异物被排水过滤器43捕获。
在箱体10内的上部配置有供水装置50。供水装置50向外桶20内进行供水。此外，供水装置50具有将洗涤剂自动投入至外桶20内的功能。即，供水装置50也是洗涤剂投入装置。
供水装置50具备供水阀51、供水软管52、注水口构件53、洗涤剂盒(tank)54、水路形成构件55、洗涤剂泵56以及注水管57。
供水阀51的入口经由未图示的连接软管连接于水龙头。在供水阀51的出口连接有供水软管52的入口。
注水口构件53具有前表面和上表面开口的箱状。在注水口构件53的底部设有注水口53a。注水口53a与注水管57的上端连接。注水管57的下端连接于外桶20。
洗涤剂盒54容纳于注水口构件53内。洗涤剂盒54内以原液的状态贮留有液体洗涤剂。用户能在向洗涤剂盒54内补充洗涤剂时将洗涤剂盒54向箱体10的前方拉出。
水路形成构件55配置于注水口构件53的上表面。在水路形成构件55的内部形成有从水路形成构件55的后端部向前方延伸的供水路55a和与该供水路55a相连的注水室55b。在供水路55a的入口连接有供水软管52的出口。在注水室55b的底面形成有与注水口构件53的内部相连的许多注水孔。
在注水口构件53的内部，在洗涤剂盒54的下方形成有间隙，该间隙成为从水路形成构件55的注水室55b排出的水的流路53b。
洗涤剂泵56中，其吸入口经由吸入管56a连接于洗涤剂盒54，其吐出口经由排出管56b连接于水路形成构件55的供水路55a。
在清洗过程或漂洗过程中向外桶20内供水时，供水阀51打开。来自水龙头的水经由供水阀51和供水软管52向水路形成构件55的供水路55a流入。流入至供水路55a的水流向注水室55b并从注水室55b向注水口构件53的内部排出。排出至注水口构件53内的水流过流路53b，经由注水口53a和注水管57供给至外桶20内。当外桶20内蓄水至清洗水位或漂洗水位时，供水阀51锁闭。
在清洗过程中，在与供水同时地向外桶20内投入洗涤剂的情况下，在供水阀51打开前，通过洗涤剂泵56的动作来将洗涤剂盒54内的洗涤剂送至供水路55a。之后，当供水阀51打开时，供水路55a内的洗涤剂被流过供水路55a的水冲走，与水一起投入至外桶20内。
在清洗过程中，在将洗涤剂与供水分开地投入到外桶20内的情况下，洗涤剂泵56工作，洗涤剂盒54内的洗涤剂被送至供水路55a。之后，供水阀51打开，供水路55a内的洗涤剂被流过供水路55a的水冲走而投入至外桶20内。当流过了会使所有的洗涤剂冲至外桶20内的量的水时，供水阀51锁闭。
需要说明的是，在供水装置50中，可以在注水口构件53内的洗涤剂盒54旁边配置贮留液体柔顺剂的柔顺剂盒(未图示)。在该情况下，在漂洗过程中柔顺剂盒内的柔顺剂通过柔顺剂泵(未图示)被送至水路形成构件55的供水路55a。之后，当供水阀51打开时，供水路55a内的柔顺剂被流过供水路55a的水冲走，与水一起投入至外桶20内。
在外桶20内的底部配置有加热器60。加热器60对蓄于外桶20内的水进行加热。
图2是表示滚筒洗衣机1的结构的框图。
滚筒洗衣机1除了上述结构以外，还具备控制部101、存储部102、操作部103、显示部104、水位传感器105、水温传感器106、马达驱动部107、供水驱动部108、排水驱动部109、泵驱动部110以及加热器驱动部111。
操作部103包括：电源按钮，进行电源的接入和断开；模式选择按钮，用于从洗涤运转的多个运转模式中选择任意的运转模式；以及开始按钮，用于使 洗涤运转开始和暂停。操作部103将与用户所操作的按钮对应的输入信号输出至控制部101。
显示部104包括LED等发光元件、液晶面板等显示器，根据来自控制部101的控制信号，进行已选择的运转模式的显示、洗涤运转的进行状况的显示、异常的通知等。
操作部103和显示部104也可以由触摸面板等操作显示部构成。
水位传感器105检测外桶20内的水位，并将与水位对应的水位信号输出至控制部101。水温传感器106检测外桶20内的水的温度，并将与水温对应的水温信号输出至控制部101。
马达驱动部107根据来自控制部101的控制信号对驱动马达30进行驱动。马达驱动部107包括检测驱动马达30的转速的旋转传感器、逆变电路等，调整驱动电力使得驱动马达30按照由控制部101设定的转速进行旋转。而且，马达驱动部107包括对流向驱动马达30的电流进行检测的电流传感器。
供水驱动部108根据来自控制部101的控制信号驱动供水阀51。排水驱动部109根据来自控制部101的控制信号驱动排水阀41。
泵驱动部110根据来自控制部101的控制信号驱动洗涤剂泵56。加热器驱动部111根据来自控制部101的控制信号驱动加热器60。
存储部102包括EEPROM(电可擦可编程只读存储器)、RAM(随机存取存储器)等。存储部102中存储有用于执行各种运转模式的洗涤运转的程序。此外，存储部102中存储有用于执行这些程序的各种参数、各种控制标记。
控制部101包括CPU(中央处理器)等，基于来自操作部103、水位传感器105、水温传感器106等的各信号，并根据存储于存储部101的程序来控制显示部104、马达驱动部107、供水驱动部108、排水驱动部109、泵驱动部110以及加热器驱动部111等。由此，控制部101控制驱动马达30、作为洗涤剂投入装置的供水装置50以及加热器60的动作。
那么，在滚筒洗衣机1中，基于用户对操作部103的操作，在控制部101的控制下进行各种运转模式的洗涤运转。在洗涤运转中，依次进行清洗过程、中间脱水过程、漂洗过程以及最终脱水过程。根据运转模式，有时会进行两次 以上漂洗过程和中间脱水过程。
在清洗过程中，向外桶20内蓄留含有洗涤剂的水直至与容纳于滚筒23内的洗涤物的负荷量对应的清洗水位，并通过反复进行滚筒23的正转和反转来使浸泡于该水中的洗涤物翻滚。含有洗涤剂的水浸透至洗涤物的内部，通过洗涤剂的洗净力和由滚筒23的旋转即翻滚产生的机械力，附着于洗涤物的表面、内部的污垢被去除。
在漂洗过程中，在外桶20内蓄水至漂洗水位的状态下，滚筒23反复进行正转和反转，洗涤物翻滚。由此，洗涤物中所含的洗涤剂与水一同被排出，洗涤物被漂洗。
在中间脱水过程和最终脱水过程中，驱动马达30单向高速旋转，滚筒23以作用于滚筒23内的洗涤物的离心力远大于重力的转速单向旋转。通过离心力的作用，洗涤物被按压在滚筒23的内周面而被脱水。在最终脱水过程中，滚筒23以比中间脱水过程中的转速高的转速旋转。
本实施方式的滚筒洗衣机1中执行的运转模式包括使用温水进行洗涤物的洗净的温水洗涤模式。以下，对温水洗涤模式的洗涤运转进行详细说明。
用户将洗涤物投入至滚筒23内后，在操作部103中通过模式选择按钮来选择温水洗涤模式并按下开始按钮。由此，温水洗涤模式的洗涤运转开始。
首先，执行检测滚筒23内的洗涤物的负荷量的负荷量检测过程。
图3是表示在负荷量检测过程中执行的控制部101的控制动作的流程图。
控制部101开始负荷量检测滚筒旋转，通过驱动马达30来使滚筒23以洗涤物会贴附于滚筒23的内周面的转速(例如，180rpm)旋转(S101)。
在滚筒23旋转期间，控制部101基于施加于滚筒23的负荷来检测洗涤物的负荷量(S102)。例如，控制部101通过电流传感器来检测流过驱动马达30的电流，并基于电流的大小来判定负荷量。洗涤物的负荷量越多，施加于滚筒23的负荷越大，流过驱动马达30的电流越大。
当完成负荷量的检测时，控制部101结束负荷量检测滚筒旋转，使滚筒23停止(S103)。
存储部102中保存有将向外桶20内投入的洗涤剂的投入量D与负荷量建立对应而得到的洗涤剂量表。控制部101参照洗涤剂量表并基于检测出的负荷量来确定洗涤剂的投入量D(S104)。这样，负荷量检测过程结束。
需要说明的是，由滚筒23、驱动马达30以及控制部101构成本发明的负荷量检测部。
接着，执行清洗过程。在清洗过程中，依次执行供水过程、温水洗净过程以及排水过程。
图4是表示在供水过程中执行的控制部101的控制动作的流程图。
当供水过程开始时，控制部101使洗涤剂泵56工作以将第一投入量的洗涤剂投入至外桶20内，并将第一投入量的洗涤剂从洗涤剂盒54送至水路形成构件55的供水路55a内(S201)。在该洗涤剂投入之前，控制部101将在负荷量检测过程中确定的洗涤剂的投入量D以一定的比率分为第一投入量和比该第一投入量多的第二投入量。例如，可以将第一投入量与第二投入量的比率设为3比7。
接着，控制部101打开供水阀51(S202)。来自水龙头的水供给至外桶20内，并且供水路55a内的洗涤剂被水冲走而投入至外桶20内。需要说明的是，通过步骤S201和S202的处理，控制部101使供水装置50工作，向外桶20内投入第一投入量(例如，投入量D的30％)的洗涤剂。
控制部101判定外桶20内的水位是否达到吸水开始水位(S203)。吸水开始水位是滚筒23的底部稍微浸没在水中的程度的水位，是比清洗水位低的水位。
当外桶20内的水位达到吸水开始水位时(S203：是)，控制部101开始吸水滚筒旋转，以反复进行第一接通时间的接通和第一断开时间的断开的方式通过驱动马达30来使滚筒23以第一转速向右方向和左方向交替旋转(S204)。第一接通时间例如设定为10秒，第一断开时间例如设定为10秒。第一转速是洗涤物会在滚筒23内翻滚的转速，例如设定为45rpm。
洗涤物被搅拌而充分吸收滚筒23内的水，水渗入到洗涤物整体。
之后，当外桶20内的水位达到清洗水位时(S205：是)，控制部101结束吸水滚筒旋转，使滚筒23停止(S206)。
进而，控制部101锁闭供水阀51(S207)。由此，停止向外桶20内供水。
这样，供水过程结束。蓄于外桶20内的水中含有第一投入量的洗涤剂。
接着，温水洗净过程开始。
图5是表示在温水洗净过程中执行的控制部101的控制动作的流程图。
控制部101使加热器60工作(S301)。由此，开始外桶20内的水的加热。加热开始后，外桶20内的水温通过水温传感器106来持续检测。
接着，控制部101开始洗涤剂溶解滚筒旋转，以反复进行第二接通时间的接通和第二断开时间的断开的方式，通过驱动马达30来使滚筒23以第二转速向右方向和左方向交替旋转(S302)。第二接通时间例如设定为10秒，第二断开时间例如设定为10秒。第二转速例如设定为45rpm。通过滚筒23的旋转，外桶20内的水被搅拌，洗涤剂良好地溶于水中。
当经过预先设定的洗涤剂溶解时间(例如，3分钟)时(S303：是)，控制部101结束洗涤剂溶解滚筒旋转，使滚筒23停止(S304)。
接着，控制部101开始热水滚筒旋转，以反复进行第三接通时间的接通和第三断开时间的断开的方式，通过驱动马达30来使滚筒23以第三转速向右方向和左方向交替旋转(S305)。第三接通时间例如设定为10秒，第三断开时间例如设定为290秒。第三转速是洗涤物在滚筒23内进行翻滚的转速，例如设定为30rpm。第三断开时间与第二断开时间相比大幅延长。
通过滚筒23的旋转，外桶20内的水被搅拌，水温变得均匀。进而，滚筒23内的洗涤物通过翻滚所施加的机械力和洗涤剂发挥的洗净力被洗净。
控制部101判断外桶20内的水温是否达到规定水温(S306)。
容纳于洗涤剂盒54内的洗涤剂包括作为主剂的表面活性剂、作为添加剂的酶等。洗涤剂即表面活性剂、酶在达到一定程度高的水温之前，水温越高，发挥越高的洗净力。特别是，表面活性剂、酶通过在40℃左右的温水中使用而活性化，容易发挥最高的洗净力。
规定水温例如可以设定为洗涤剂即洗涤剂中所含的表面活性剂、酶活化而容易发挥高洗净力的温度(例如，40℃)。规定水温也可以设定为比上述水温 低的水温。例如，在温水洗涤模式为不想花费较长时间的模式的情况下，可以将30℃左右的水温设定为规定水温，在温水洗涤模式为用于冬季等供水温度非常低时的模式的情况下，可以将20℃左右的水温设定为规定水温。
虽然会被供水后的初始水温与规定水温之间的温度差影响，但水温例如会在30分钟～60分钟左右上升到规定水温。
当外桶20内的水温达到规定水温时(S306：是)，控制部101使供水装置50工作，向外桶20内投入第二投入量(例如，投入量D的70％)的洗涤剂(S307)。即，控制部101在使洗涤剂泵56工作来将第二投入量的洗涤剂从洗涤剂盒54送至水路形成构件55的供水路55a内后，打开供水阀51来向供水路55a内供水，通过该水将洗涤剂送至外桶20。当向外桶20内投入了洗涤剂时，控制部101锁闭供水阀51。
需要说明的是，由于以达到规定水温后的洗涤剂投入为主，因此，理想的是第二投入量为第一投入量的两倍以上。
外桶20内的水温达到规定水温，因此当投入至外桶20内的第二投入量的洗涤剂溶于外桶20内的水中时，会成为与达到规定水温前投入洗涤剂的情况相比能充分发挥高洗净力的状态。例如，在规定水温设定为40℃左右的水温的情况下，洗涤剂充分活性化而成为最容易发挥洗净力的状态。
当向外桶20内投入了洗涤剂时，进而，控制部101结束洗涤剂溶解滚筒旋转，使滚筒23停止(S308)并且使加热器60停止(S309)。
接着，控制部101开始正式清洗滚筒旋转，以反复进行第四接通时间的接通和第四断开时间的断开的方式，通过驱动马达30来使滚筒23以第四转速向右方向和左方向交替旋转(S310)。第四接通时间例如设定为20秒，第四断开时间例如设定为5秒。第四转速设定为洗涤物会在滚筒23内翻滚的转速，例如45rpm。
第四接通时间设定为比第三接通时间长的时间，第四断开时间设定为比第三断开时间短的时间。即，控制部101使外桶20内的水温达到规定水温后的期间的一个周期的接通时间的比率比达到规定水温之前的期间的一个周期的接通时间的比率长。进而，第四转速设定为比第三转速高的转速。即，控制部101 使达到规定水温后的期间的滚筒23的转速比达到规定水温前的期间的滚筒23的转速高。由此，对于通过滚筒23的旋转而施加于洗涤物的每单位时间的机械力而言，达到规定水温后的期间的该机械力比达到规定水温前的期间的该机械力大。
滚筒23内的洗涤物通过正式清洗滚筒旋转中的翻滚所施加的较大的机械力和达到规定水温后投入的洗涤剂所发挥的高洗净力而被正式洗净。由此，洗涤物的污垢被良好地去除。
当经过预先设定的正式清洗时间(例如，15分钟)时(S311：是)，控制部101结束正式清洗滚筒旋转，使滚筒23停止(S312)。这样，温水洗净过程结束。
接着，执行排水过程。排水阀41打开，从外桶20内进行排水。当排水完成时，排水阀41锁闭。
这样，清洗过程结束。在清洗过程之后接着依次执行中间脱水过程、漂洗过程以及最终脱水过程，温水洗涤模式的洗涤运转结束。
＜实施方式的效果＞
根据本实施方式，在滚筒洗衣机1中，控制部101在清洗过程中使加热器60工作来加热外桶20内的水，并基于由水温传感器106检测出的外桶20内的水温达到规定水温而使作为洗涤剂投入装置的供水装置50工作，向外桶20内投入洗涤剂。进而，控制部101在外桶20内的水温达到规定水温前的期间和达到规定水温后的期间使驱动马达30工作，通过洗涤物会翻滚的滚筒23的旋转来对滚筒23内的洗涤物施加机械力。
根据该结构，在外桶20内的水温达到规定水温后向外桶20内投入洗涤剂，该洗涤剂溶入规定水温的水中，成为与溶入蓄于外桶20内时的水温的水中的情况相比发挥更高洗净力的状态。因此，通过在这种状态下对洗涤物施加机械力，能提高洗涤物的洗净效果。
此外，洗涤剂中所含的表面活性剂发挥防止洗涤物再污染的效果，但对于达到规定水温后投入的洗涤剂，维持该防止再污染的效果的时间不会延长至清洗过程结束。因此，不必担心因防止再污染的效果下降而导致洗涤物的再污染。
进而，由于在外桶20内的水温达到规定水温之前也对洗涤物施加机械力，因此即使在规定水温下洗涤剂投入前，也能期待一定程度的洗涤物的洗净效果。
进而，根据本实施方式，控制部101对驱动马达30的动作进行控制，使得外桶20内的水温达到规定水温后的期间的每单位时间的机械力比外桶20内的水温达到规定水温前的期间的每单位时间的机械力强。
根据该结构，在达到规定水温后的期间，驱动马达30以每单位时间的机械力相对变强的方式工作，因此，能使用洗净力变高的洗涤剂来强力洗净洗涤物，能发挥较大的洗净效果。
进而，在达到规定水温前的期间，驱动马达30以每单位时间的机械力相对变弱的方式工作，因此供给至驱动马达30的每单位时间的电力变少，由驱动马达30的发热引起的温度上升变小。因此，即使在达到规定水温后的期间由于每单位时间的机械力变强而使得驱动马达30的温度上升变大，综合而言也能抑制驱动马达30的温度上升。因此，能在达到规定水温后的期间充分增强施加于洗涤物的机械力，能发挥更大的洗净效果。
进而，根据上述实施方式，控制部101基于负荷量来确定要向外桶20内投入的洗涤剂的投入量D，并将确定出的投入量D分为第一投入量和比该第一投入量多的第二投入量。并且，控制部101在外桶20内的水温达到规定水温前向外桶20内投入第一投入量的洗涤剂，并基于外桶20内的水温达到规定水温二将第二投入量的洗涤剂投入至外桶20内。
根据该结构，在清洗过程中应投入至外桶20内的投入量D中，主要的第二投入量的洗涤剂在达到规定水温后被投入至外桶20内，而在达到规定水温前，比第二投入量少的第一投入量的洗涤剂被投入至外桶20内。由此，在达到规定水温前也能发挥洗涤剂的洗净力，能提高达到规定水温前的洗涤物的洗净效果。
进而，根据本实施方式，控制部101将投入量D以预先设定的比率分为第一投入量和第二投入量。
根据该结构，即使投入量根据洗涤物的负荷量而发生变化，第一投入量与第二投入量的占比也不会变化。因此，即使洗涤物的负荷量发生变化，达到规定水温前和达到规定水温后的洗净效果也不容易产生偏差。
以上，对本发明的实施方式进行了说明，但本发明不受上述实施方式等的任何限制，此外，本发明的实施方式也可以在上述内容以外进行各种变更。
＜变更例1＞
图6的(a)是表示变更例1的在供水过程中执行的控制部101的控制动作的流程图。图6的(b)是表示变更例1的在温水洗净过程中执行的控制部101的控制动作的流程图。
在上述实施方式中，控制部101基于负荷量来确定要向外桶20内投入的洗涤剂的投入量D，并将确定出的投入量D分为第一投入量和比该第一投入量多的第二投入量。并且，控制部101在外桶20内的水温达到规定水温前向外桶20内投入第一投入量的洗涤剂，并基于外桶20内的水温达到规定水温二将第二投入量的洗涤剂投入至外桶20内。
与此相对，在本变更例中，控制部101在外桶20内的水温达到规定水温前不将洗涤剂投入至外桶20内，基于外桶20内的水温达到规定水温而将基于负荷量来确定的投入量D的洗涤剂投入至外桶20内。
即，在本变更例中，如图6的(a)所示，在供水过程中，控制部101不向外桶20内进行洗涤剂投入，而是打开供水阀51来开始向外桶20内供水(S202)。进而，如图6的(b)所示，在温水洗净过程中，控制部101使加热器60工作后(S301)不进行洗涤剂溶解滚筒旋转而开始热水滚筒旋转(S305)。然后，当外桶20内的水温达到规定水温时(S306：是)，控制部101使供水装置50工作来将投入量D的洗涤剂投入至外桶20内(S321)。
根据本变更例的结构，通过将在清洗过程中应投入至外桶20内的全部投入量D的洗涤剂用于规定水温的水中，能发挥高洗净力。
＜其他变更例＞
在上述实施方式中，在温水洗净过程中，对于滚筒23即驱动马达30的一个周期的接通时间的比率而言，外桶20内的水温达到规定水温后的期间的该比率比达到规定水温前的期间的该比率长，因此第四接通时间比第三接通时间长，第四断开时间比第三断开时间短。然而，也可以设为：第四接通时间比第三接通时间长，第四断开时间等于第三断开时间。或者，也可以设为：第四接通时 间等于第三接通时间，第四断开时间比第三断开时间短。进而，只要达到规定水温后的期间的通过滚筒23的旋转而施加于洗涤物的每单位时间的机械力比达到规定水温前的期间的每单位时间的该机械力大，也可以将第四转速和第三转速设定为相等的转速。
进而，在上述实施方式中，在供水过程中将第一投入量的洗涤剂投入至外桶20内。然而，也可以是，在温水洗净过程中，在由加热器60对水开始加热的紧前或者紧后将第一投入量的洗涤剂投入至外桶20内。
进而，在上述实施方式中，当外桶20内的水温达到规定水温时，加热器60停止，之后外桶20内的水不被加热。然而，也可以是，在基于达到规定水温而使加热器60停止之后，控制部101也通过水温传感器106来继续检测水温并以维持规定水温的方式进行加热器60的通断控制。
进而，在上述实施方式中，作为洗涤剂投入装置的供水装置50采用如下结构：将洗涤剂盒54内的液体洗涤剂送至水路形成构件55的供水路55a，利用流过供水路55a的水来冲走洗涤剂，由此将洗涤剂投入至外桶20内。然而，洗涤剂投入装置的结构并不限定于这样的结构。例如，也可以有别于供水装置50而采用如下结构：将洗涤剂盒内的液体洗涤剂经由泵、供给软管直接投入至外桶20内。
进而，在像上述变更例1那样在达到规定水温后供给全部投入量D的洗涤剂的结构的情况下，洗涤剂投入装置也可以由具备如下构件的供水装置构成：洗涤剂盒，投入一次投入量D的洗涤剂；第一供水路，经由该洗涤剂盒向外桶20内供水；第二供水路，以不经由洗涤剂盒的方式向外桶20内供水；第一供水阀，用于使水向第一供水路流动；以及第二供水阀，用于使水向第二供水路流动。在该情况下，在供水过程中，第二给水阀打开。进而，在温水洗净过程中，当外桶20内的水温达到规定水温时，第一供水阀打开。
进而，在上述实施方式中例示了滚筒洗衣机1。然而，本发明也可以适用于全自动洗衣机。在全自动洗衣机中，作为内桶，在外桶内配置有底部具有波轮并能绕铅直轴旋转的洗涤脱水桶。在该情况下，洗涤单元包括洗涤脱水桶和波轮以及产生用于驱动它们的转矩的驱动马达。而且，洗涤单元在蓄有水的洗涤脱水桶内通过驱动马达来使波轮旋转而产生水流，由此对洗涤物施加机械力。
进而，本发明也能适用于具有烘干功能的滚筒式洗干一体机和全自动洗干一体机。
此外，本发明的实施方式能在技术方案所示的技术构思的范围内适当地进行各种变更。

Claims (6)

  1. 一种洗衣机，其特征在于，具备：
    外桶，配置于箱体内，蓄留水；
    洗涤单元，包括配置于所述外桶内的内桶和驱动马达，基于所述驱动马达所产生的转矩来对容纳于所述内桶内的洗涤物施加机械力；
    洗涤剂投入装置，将洗涤剂投入至所述外桶内；
    加热器，加热蓄于所述外桶内的水；
    水温传感器，检测蓄于所述外桶内的水的温度；以及
    控制部，对所述驱动马达、所述洗涤剂投入装置以及所述加热器的动作进行控制，执行包括清洗过程、漂洗过程以及脱水过程的洗涤运转，
    所述控制部在所述清洗过程中使所述加热器工作来加热所述外桶内的水，并基于由所述水温传感器检测出的所述外桶内的水温达到规定水温而使所述洗涤剂投入装置工作，将洗涤剂投入至所述外桶内，在所述外桶内的水温达到所述规定水温前的期间和达到所述规定水温后的期间使所述驱动马达工作，对所述内桶内的洗涤物施加机械力。
  2. 根据权利要求1所述的洗衣机，其特征在于，
    所述内桶是配置为能在所述外桶内绕水平的旋转轴或相对于水平方向倾斜的旋转轴旋转的滚筒，
    所述洗涤单元通过所述驱动马达来以所述滚筒内的洗涤物会翻滚的转速使所述滚筒旋转，由此对洗涤物施加机械力。
  3. 根据权利要求1或2所述的洗衣机，其特征在于，
    所述控制部对所述驱动马达的动作进行控制，使得所述外桶内的水温达到所述规定水温后的期间的每单位时间的机械力比所述外桶内的水温达到所述规定水温前的期间的每单位时间的机械力强。
  4. 根据权利要求1或2所述的洗衣机，其特征在于，
    还具备：负荷量检测部，检测所述内桶内的洗涤物的负荷量，
    所述控制部基于所述负荷量来确定要向所述外桶内投入的洗涤剂的投入量，并将确定出的所述投入量分为第一投入量和比该第一投入量多的第二投入量，在所述外桶内的水温达到所述规定水温前将所述第一投入量的洗涤剂投入至所述外桶内，并基于所述外桶内的水温达到所述规定水温而将所述第二投入量的洗涤剂投入至所述外桶内。
  5. 根据权利要求4所述的洗衣机，其特征在于，
    所述控制部将确定出的所述投入量以预先设定的比率分为所述第一投入量和所述第二投入量。
  6. 根据权利要求1或2所述的洗衣机，其特征在于，
    还具备：负荷量检测部，检测所述内桶内的洗涤物的负荷量，
    所述控制部基于所述负荷量来确定要向所述外桶内投入的洗涤剂的投入量，在所述外桶内的水温达到所述规定水温前不将洗涤剂投入至所述外桶内，基于所述外桶内的水温达到所述规定水温而将确定出的所述投入量的洗涤剂投入至所述外桶内。
PCT/CN2023/128968 2022-12-21 2023-11-01 洗衣机 WO2024131320A1 (zh)

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CN1724766A (zh) * 2004-07-19 2006-01-25 乐金电子(天津)电器有限公司 可调整洗涤剂投入量的洗衣机及其控制方法
JP2007307026A (ja) * 2006-05-17 2007-11-29 Matsushita Electric Ind Co Ltd 洗濯機
CN103799936A (zh) * 2012-11-01 2014-05-21 松下电器产业株式会社 餐具清洗机
JP2018122015A (ja) * 2017-02-03 2018-08-09 パナソニックＩｐマネジメント株式会社 洗濯機
WO2020003760A1 (ja) * 2018-06-25 2020-01-02 パナソニックＩｐマネジメント株式会社 洗濯機
CN111101343A (zh) * 2018-10-25 2020-05-05 日立环球生活方案株式会社 洗衣机

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Publication number Priority date Publication date Assignee Title
CN1724766A (zh) * 2004-07-19 2006-01-25 乐金电子(天津)电器有限公司 可调整洗涤剂投入量的洗衣机及其控制方法
JP2007307026A (ja) * 2006-05-17 2007-11-29 Matsushita Electric Ind Co Ltd 洗濯機
CN103799936A (zh) * 2012-11-01 2014-05-21 松下电器产业株式会社 餐具清洗机
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