WO2013073140A1 - Machine à laver à tambour - Google Patents

Machine à laver à tambour Download PDF

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Publication number
WO2013073140A1
WO2013073140A1 PCT/JP2012/007178 JP2012007178W WO2013073140A1 WO 2013073140 A1 WO2013073140 A1 WO 2013073140A1 JP 2012007178 W JP2012007178 W JP 2012007178W WO 2013073140 A1 WO2013073140 A1 WO 2013073140A1
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WO
WIPO (PCT)
Prior art keywords
water
circulation pump
circulation
motor
load
Prior art date
Application number
PCT/JP2012/007178
Other languages
English (en)
Japanese (ja)
Inventor
菊川　智之
脇田　克也
内山　亘
中間　啓人
Original Assignee
パナソニック株式会社
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 パナソニック株式会社 filed Critical パナソニック株式会社
Priority to CN201280055632.7A priority Critical patent/CN103930609B/zh
Priority to EP12850049.3A priority patent/EP2781640A4/fr
Publication of WO2013073140A1 publication Critical patent/WO2013073140A1/fr

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    • 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
    • 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
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/44—Current or voltage
    • D06F2103/48—Current or voltage of the motor driving the pump
    • 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
    • D06F2105/06—Recirculation of washing liquids, e.g. by pumps or diverting valves
    • 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
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements

Definitions

  • the present invention relates to a drum type washing machine provided with means for circulating washing water.
  • the drum-type washing machine includes a circulation pump as a drive source for injecting washing water into clothes in the water tank.
  • the circulation pump is disposed in a circulation path through which the wash water circulates, and operates the circulation pump while maintaining a predetermined water level by the water level detection unit.
  • the to-be-processed object can be efficiently cleaned by increasing the contact between the to-be-processed object (laundry) and the washing water.
  • the water level of the washing water in the rotating drum is lowered due to the water absorption of the clothing.
  • the decrease in the water level of the washing water may be determined to be a fluctuation in the water level due to the driving of the circulation pump. Therefore, the operation of the circulation pump continues and bubbles and air enter the circulation pump. As a result, there is a problem that excessive foaming and noise occur due to the foam and air entering the circulation pump.
  • a drum-type washing machine of the present invention has a rotating drum formed in a bottomed cylindrical shape, a water tank containing the rotating drum, and a circulation path connecting the washing water in the water tank to the water tank.
  • At least one of a water circulation system circulated by a circulation pump, a water supply unit for supplying water into the rotary drum or the water tank, a motor for driving the rotary drum, a load detection unit for detecting the load of the circulation pump, and a washing step and a rinsing step.
  • a control unit for controlling one.
  • a control part has the structure which stops the function of a circulation pump while stopping a drive of a motor, when a load detection part detects the predetermined
  • the load detection unit detects a predetermined load fluctuation of the circulation pump
  • the circulation pump is stopped and the motor is stopped.
  • variation by rotation of a rotating drum or the drive of a circulation pump is eliminated, and a water level can be recovered, and mixing of the bubble and air into a circulation pump via a circulation path can be suppressed.
  • excessive foaming and noise in the circulation pump generated by the mixed bubbles and air can be suppressed.
  • FIG. 1 is a cross-sectional view showing a schematic structure of a drum-type washing machine according to Embodiment 1 of the present invention.
  • FIG. 2A is a cross-sectional view of a circulation pump of the drum type washing machine in the embodiment.
  • FIG. 2B is a side view of the circulation pump of the drum type washing machine in the embodiment.
  • FIG. 3 is a circuit diagram of a load detection unit of the drum type washing machine in the embodiment.
  • FIG. 4 is a time chart showing the operation of the drum type washing machine in the embodiment.
  • FIG. 5 is a time chart showing the operation of the drum type washing machine in the second embodiment of the present invention.
  • the washing water includes the washing water in the washing step and the rinsing water in the rinsing step.
  • (Embodiment 1) 1 is a cross-sectional view showing a schematic structure of a drum-type washing machine according to Embodiment 1 of the present invention.
  • the drum type washing machine of the present embodiment includes at least a water tank 3 that is swingably disposed inside a washing machine body 2 and a rotation that is rotatably disposed within the water tank 3.
  • the drum 4 is composed of a motor 6 attached to the outside of the back surface of the water tank 3, a water supply system 7, a drainage system 8, a drying system 9, a water circulation system 16, and the like.
  • the rotating drum 4 is rotationally driven by a motor 6.
  • the drum type washing machine of the present embodiment is a so-called drum type washing machine having a function of executing at least a washing step, a rinsing step, a dehydrating step, and a drying step by automatic control according to mode setting and a control program. Is configured. At this time, the drying system 9 may be omitted.
  • the water supply system 7 supplies water into the water tank 3 at an appropriate time as indicated by a solid arrow A by opening and closing a water supply valve (not shown) constituted by an electromagnetic valve or the like. At this time, the detergent in the detergent container 7a is introduced into the water tank 3 in a timely manner using water supply.
  • the drainage system 8 drains the washing water by opening and closing the drain valve 19 along the path indicated by the one-dot chain line arrow B when necessary at the end of the washing step or at the end of the rinsing step. At this time, the washing water is drained out of the drum type washing machine along a path passing through the drainage filter 8b through the drain pipe 8a connected to the lower portion of the water tank 3.
  • the drainage filter 8b is configured to collect lint and be removable from the outside.
  • the water circulation system 16 drives the circulation pump 20 to return the washing water in the water tank 3 to the water tank 3 through the following route in a washing preparation step, a washing step, a rinsing step, and the like as necessary. Repeat the cycle.
  • the water circulation system 16 is routed from the drain pipe 8a connected to the lower part of the water tank 3 to the drain filter 8b, the inflow side path 31a to the circulation pump 20 of the circulation path 31, the circulation pump 20, and the circulation of the circulation path 31.
  • a discharge side path 31b from the pump 20 is configured. This prevents the detergent introduced into the water tank 3 from dissolving at an early stage and uneven clothing, thereby improving the functions of the washing step and the rinsing step.
  • the operation panel 21 is provided on the upper front side of the washing machine main body 2, and a mode such as an operation course and various functions are selected by input of an input setting unit of the operation panel 21.
  • the control unit 22 displays the input information on the display unit on the operation panel 21 to notify the user.
  • the control unit 22 receives data from the water level detection unit 40 that detects the water level in the water tank 3, and the drum type washing machine. Start driving.
  • the control part 22 controls operation
  • the rotary shaft 4a is inclined downward.
  • the rotating shaft 4 a of the rotating drum 4 is directly connected to the shaft of the motor 6 provided on the back surface of the water tank 3.
  • the laundry can be easily put in and out of the rotating drum 4 without taking an unreasonable posture such as bending the user.
  • the laundry by setting the inclination angle ⁇ to 20 ⁇ 10 degrees, even if there is a difference in height from a child (excluding an infant) to an adult or a wheelchair user, the laundry It is possible to obtain a state where the work of taking in and out is most easily performed. Furthermore, there is an advantage that a deep water storage state can be realized by inclining the rotating drum 4 even when the washing water supplied to the rotating drum 4 accumulated on the back side of the rotating drum 4 is small.
  • the water tank 3 is provided along the vicinity of the rotating drum 4 with the same inclination as the rotating drum 4 in order to make water supply act on the laundry in the rotating drum 4 efficiently.
  • the washing machine body 2 is provided with an opening / closing door 5 so that the opening 13 of the water tub 3 is sealed through a sealing material 14 attached to the rim of the opening / closing door 5 and the opening 13 of the water tub 3 is opened. Is provided.
  • the rotating drum 4 is driven in a forward / reverse arc rotation drive mode and a forward / reverse continuous rotation drive mode during a washing operation.
  • the forward / reverse arc rotation drive mode is a drive mode in which sudden forward arc rotation and sudden reverse arc rotation in which the rotating drum 4 is driven at more than 90 degrees and less than 180 degrees are alternately repeated.
  • the forward / reverse continuous rotation drive mode refers to the continuous rotation of the rotating drum 4 at the rotational speed at which the laundry lifted by the rotation of the rotating drum 4 falls from the height where the weight of the rotating drum is superior. This is a repeated drive mode.
  • the forward / reverse arc rotation drive mode and the forward / reverse continuous rotation drive mode of the rotary drum 4 are alternately executed.
  • the laundry is lifted up to more than 90 degrees and less than 180 degrees by the arc rotation and rapid braking of the rotating drum 4 at a rapid speed exceeding 90 degrees and less than 180 degrees.
  • the sudden braking at the final stage of lifting the laundry the laundry is peeled off from the inner surface of the rotating drum 4 by the inertia and weight of the laundry, and the laundry is surely dropped to the side opposite to the lifting side by the weight of the laundry. be able to.
  • a particularly high unraveling action (unraveling action) can be imparted to the laundry that is sufficiently swollen, including the washing water, loosened and slippery.
  • the washing performance can be enhanced by exerting a mechanical action such as dropping on the laundry.
  • the forward / reverse arc rotation drive mode that alternately repeats the forward and reverse sudden arc rotations in the forward and reverse directions of the arc rotation drive, the laundry lifting position and falling by the forward and reverse alternating sudden arc rotation drive.
  • the position can be alternately switched between the left and right in each arc rotation drive. Therefore, it is possible to further enhance the action of solving the laundry while preventing the laundry from being entangled more effectively. Further, the cleaning performance can be improved by increasing the number of times that the mechanical action such as dropping is applied to the laundry.
  • FIG. 2A is a cross-sectional view of the circulation pump of the drum type washing machine in the present embodiment.
  • FIG. 2B is a side view of the circulation pump of the drum type washing machine in the present embodiment.
  • the circulation pump 20 is fixedly disposed on a base plate 2 a that is the bottom of the washing machine body 2.
  • the circulation pump 20 includes a resin pump casing 20b that houses an impeller 20a fitted on a resin mounting seat 35, and a metal motor casing of the circulation motor 20c. 20d.
  • the opening side of the pump casing 20b is fitted to the mounting seat 35 so as to be in contact with and integrated with the bearing partition wall 20d1 at the front end of the motor casing 20d.
  • the impeller 20a is directly connected to the motor shaft 20e of the circulation motor 20c.
  • the circulation pump 20 is being fixed to the base plate 2a of the washing machine main body 2 with the bolt etc. via the attachment piece 35a of the attachment seat 35, for example.
  • route 31b of the circulation path 31 connected to the drainage connection part 20g of the circulation pump 20 is the injection port 51 provided in the lowest part of the front end wall 3h around the opening 13 of the water tank 3, as shown in FIG. Connected from the outside.
  • route 31b is provided between the back surface of the front end wall 3h of the water tank 3, and the surface of the front end wall 4b of the rotating drum 4 corresponding to the front end wall 3h. Spray.
  • the wash water is discharged by the circulation pump 20 into the rotary drum 4 through the flow path 52 formed between the back surface of the front end wall 3 h of the water tank 3 and the front end wall 4 b of the rotary drum 4.
  • the inflow connection 20f of the circulation pump 20 is connected to the inflow side path 31a of the circulation path 31, and the washing water in the water tank 3 is supplied to the circulation pump 20 via the drain pipe 8a provided in the lower part of the water tank 3. It is injected into the circulation pump 20 by driving.
  • the circulation pump 20 of the water circulation system 16 configured as described above is controlled by a control unit 22 described below.
  • the control unit 22 controls the circulation pump 20 by a current detection unit 30 that is a load detection unit that detects a change in the load of the circulation motor 20c, which will be described below with reference to FIG.
  • FIG. 3 is a circuit diagram illustrating a load detection unit of the drum type washing machine according to the first embodiment of the present invention.
  • FIG. 4 is a time chart showing the operation of the drum type washing machine in the first embodiment of the present invention.
  • the control unit 22 measures the load fluctuation of the circulation motor 20c of the circulation pump 20 as a drive current value or drive power amount of the circulation motor 20c at the current detection unit 30 at least during the cleaning step. To do.
  • the current detection unit 30 an application of a control method for inverter control of the circulation motor 20c that is generally used in recent years is used.
  • the drive current value of the circulation motor 20c will be described as an example of the load fluctuation of the circulation motor 20c.
  • the present invention is not limited to this, and any device that can detect a load change may be used.
  • the circulation motor 20 c is driven via the AC power supply 25, the rectifier circuit 26, the inverter circuit 27, and the control unit 22 that controls the inverter circuit 27 based on signals from the load detection unit 30.
  • the rectifier circuit 26 converts AC power from the AC power supply 25 into DC power.
  • the rectifier circuit 26 includes a full-wave rectifier circuit 28 and a DC voltage doubler circuit.
  • the DC voltage doubler circuit is configured by connecting capacitors 29a and 29b connected in series to the DC output terminal of the full-wave rectifier circuit 28 and the connection point of the capacitors 29a and 29b to one terminal of the input of the AC power supply. The voltage applied to the inverter circuit 27 is increased.
  • the inverter circuit 27 converts the DC power converted by the rectifier circuit 26 into three-phase AC power and drives the circulation motor 20c.
  • the current detection unit which is the load detection unit 30, is connected to the negative voltage side of the inverter circuit 27. It is detected by measuring the voltage. Thereby, the output current of the inverter circuit 27, that is, the drive current value that is the phase current supplied to the U-phase, V-phase, and W-phase of the circulating motor 20c can be detected.
  • the control unit 22 calculates the drive current value of the inverter circuit 27 based on the output signal of the current detection unit 30, applies a predetermined frequency and a predetermined voltage according to the set rotational speed, and drives the rotation of the circulation motor 20c. To control. At this time, according to the load of the circulation motor 20c, the circulation motor 20c is set by controlling the circulation motor 20c so that it becomes a drive current phase with respect to the output voltage output to each phase of the inverter circuit 27 or a reactive current. It can be rotationally driven at a synchronous speed (set rotational speed).
  • the control part 22 opens the solenoid valve of the water supply system 7, and the water used as washing water is supplied in the water tank 3.
  • the control unit 22 closes the electromagnetic valve to stop the water supply, and the rotating drum 4 Start rotating. At this time, the circulation pump 20 is driven while rotating the rotary drum 4. Thereby, the contact time of the laundry and the washing water is increased, and the cleaning performance can be improved.
  • the water level in the water tank 3 is lowered by the rotation of the rotating drum 4 and the driving of the circulation pump 20.
  • the water level in the water tank 3 also decreases when the laundry in the rotating drum 4 has a lot of highly water-absorbing fibers such as cotton.
  • the water level of the washing water is too low due to the water absorption of the laundry clothes, the washing performance of the laundry is reduced.
  • the water level detection unit 40 In the detection of the water level in the water tank 3 by the water level detection unit 40, the water level is lowered due to the rotation of the rotating drum 4 and the driving of the circulation pump 20, or the water level is lowered due to water absorption of clothes such as laundry. It is difficult to determine whether or not For this reason, when bubbles and air are mixed into the circulation path 31 and enter the circulation pump 20 in a state where the water level in the water tank 3 cannot be accurately detected, the output of the circulation pump 20 for circulating the wash water decreases. Furthermore, if bubbles or air is mixed into the circulation pump 20, excessive circulation or noise may be generated by the circulation pump 20.
  • the circulation pump 20 when the circulation pump 20 is driven in a state in which the amount of water in the water tank 3 is reduced and the water level is lowered, the circulation pump 20 is driven in a so-called air-filled state in which air is mixed.
  • the load on the circulation pump 20 is reduced as shown in FIG. 4, and the load on the circulation motor 20c is also reduced. That is, the state of the circulation pump 20 can be detected based on the fluctuation of the load of the circulation motor 20c.
  • the air load of the circulation pump 20 is detected by utilizing the change in the load of the circulation motor 20c. .
  • a predetermined threshold value Wd is provided for the load of the circulation motor 20c detected by the load detection unit. Then, when the load of the circulation motor 20c becomes smaller than the predetermined threshold value Wd and a load fluctuation A that is (W0 ⁇ Wd) or more with respect to the load value W0 of the circulation motor 20c in the steady state occurs, the circulation pump 20 determines that air is present.
  • the control unit 22 controls the rotation speed of the circulation motor 20c so as to stop the function of the circulation pump 20. . Specifically, the rotation of the circulation motor 20c is stopped, or the rotation is reduced to such an extent that the function as the circulation pump 20 cannot be obtained. Then, the function of the circulation pump 20 is stopped to prevent a drop in the water level in the water tank 3 and bubbles and air from entering the circulation path 31 and entering the circulation pump 20. Thereby, it is possible to suppress bubbles generated in the circulation pump 20 and excessive foaming due to air crushing and noise generated during crushing.
  • control unit 22 stops the driving of the motor 6 and stops the rotation of the rotating drum 4.
  • the water level in the water tank 3 is detected by the water level detection unit 40 while the rotation of the rotary drum 4 is stopped and the water level is stabilized by stopping the driving of the circulation pump 20. And when the water level detection part 40 detects that it is more than a predetermined water level, the drive of the rotating drum 4 and the circulation pump 20 is started again. At this time, when the drop in the water level in the water tank 3 is caused by the rotation of the rotating drum 4 or the driving of the circulation pump 20, the clothes and the water tank 3 are stopped while the rotation of the rotating drum 4 and the circulation pump 20 are stopped. The washing water is reflected in the water level, and the water level in the water tank 3 is restored.
  • the control unit 22 determines that the water level in the water tank 3 has decreased due to water absorption of the laundry. Then, the control part 22 opens the solenoid valve of the water supply system 7, and supplies water to the predetermined water level in the water tank 3 again. Thereafter, the control unit 22 drives the motor 6 to rotate the rotating drum 4 and further drives the circulation pump 20. As a result, excessive foaming and noise caused by the circulation pump 20 can be suppressed, and the washing step can be executed without deteriorating the washing performance.
  • the circulation motor 20c of the circulation pump 20 by detecting a predetermined load fluctuation of the circulation motor 20c of the circulation pump 20 by the current detection unit 30, the circulation motor is always operated during the operation of the circulation pump 20. It becomes possible to detect the mixing of bubbles and air into the circulation pump 20 from the load fluctuation of 20c. As a result, the driving of the circulation pump 20 can be stopped, and excessive foaming due to crushing of bubbles and air mixed in the circulation pump 20 and noise generated during crushing can be suppressed.
  • the circulation pump 20 when the circulation pump 20 is stopped, the washing water returns to the clothes and the water tank, and is reflected in the water level in the water tank 3 to recover the water level. Therefore, when the circulation pump 20 is started again, mixing of bubbles and air into the circulation path is suppressed. As a result, it is possible to suppress a decrease in output of the circulation pump 20, excessive foaming, and noise generated when the air is crushed.
  • FIG. 5 is a time chart showing the operation of the drum type washing machine in the second embodiment of the present invention.
  • the drum type washing machine of this Embodiment stops the drive of a motor and the function of a circulation pump, and after a predetermined time passes, a water level detection part detects and controls a water level.
  • a water level detection part detects and controls a water level.
  • the drum type washing machine of the present embodiment drives the load fluctuation value W of the circulation motor 20c by the load detection unit 30 while the rotary drum 4 and the circulation pump 20 are being driven. Detect with current value. Then, when the load of the circulating motor 20c becomes smaller than the predetermined threshold Wd and the load detecting unit 30 detects a load fluctuation A that is equal to or greater than (W0 ⁇ Wd) with respect to the load value W0 of the circulating motor 20c in the steady state. The function of the circulation pump 20 is stopped, that is, the rotation speed of the circulation pump 20 is reduced or stopped.
  • control unit 22 stops the driving of the motor 6 and stops the rotation of the rotating drum 4.
  • the control unit 22 detects the water level in the water tank 3 with the water level detection unit 40. . At this time, if the detected water level is equal to or lower than the predetermined water level, it is determined that the water level is lowered due to a large amount of water absorbed by the clothing due to the material or the like, and bubbles or air are mixed in the circulation path 31. In that case, the control unit 22 opens the electromagnetic valve of the water supply system 7 and supplies water up to a predetermined water level or supplies water for a predetermined time, and then executes the washing step again.
  • the water level of the washing water is detected after a predetermined time t1 has elapsed since the circulation pump 20 was stopped, the water level in the water tank 3 can be accurately detected.
  • an appropriate amount of water can be supplied in accordance with the amount of water absorbed by clothing depending on the material and the like, and the laundry can be washed with a stable and high detergency.
  • the example is described in which the circulation pump is controlled by the load fluctuation of the circulation motor in the washing step.
  • the present invention is not limited to this.
  • it may be executed in a rinsing step. Thereby, a rinse performance can further be improved.
  • the load detection unit detects the load fluctuation due to the drive current value of the circulating motor.
  • the present invention is not limited to this.
  • load fluctuations such as the drive power amount and rotation speed of the circulation motor are detected and controlled by the load detector. Also good. Thereby, the same effect is acquired.
  • the load detection unit detects the three-phase drive current value of the circulation motor
  • the present invention is not limited to this.
  • the structure which detects the drive current value of 1 phase or 2 phases of the three phases of a circulation motor in a load detection part may be sufficient. Thereby, the structure of a load detection part can be simplified.
  • the present invention is not limited to this.
  • it is good also as a structure detected with the current sensor required in the case of inverter drive. Thereby, a cheap and compact load detection part is realizable.
  • the drum-type washing machine of the present invention has a rotating drum formed in a bottomed cylindrical shape, a water tank containing the rotating drum, and a circulation path that connects the washing water in the water tank to the water tank.
  • a water circulation system that is circulated by a circulation pump, a water supply unit that supplies water into the rotary drum or the water tank, a motor that drives the rotary drum, a load detection unit that detects a load of the circulation pump, and a washing step and a rinsing step
  • a control part has the structure which stops the function of a circulation pump while stopping a drive of a motor, when a load detection part detects the predetermined
  • This configuration prevents the water level in the aquarium from lowering due to rotation of the rotating drum, driving of the circulation pump, water absorption of the laundry, etc., preventing bubbles and air from entering the circulation path and entering the circulation pump. it can. As a result, excessive foaming in the circulation pump generated by the mixed bubbles and air and noise generated when the air is crushed can be suppressed. Further, when the water level in the water tank is lowered, the washing water in the clothes and the water tank is reflected in the water level and recovered while the rotation drum is driven and the function of the circulation pump is stopped. Therefore, even if the circulation pump is started again, the water level is restored, so that bubbles and air are prevented from being mixed into the circulation path. Thereby, the fall of the output of the circulation pump resulting from an air bag etc. can be prevented, and the fall of the cleaning power of a drum type washing machine can be suppressed.
  • the drum type washing machine of the present invention further includes a water level detection unit that detects the level of the washing water, and the control unit stops the drive of the motor and the function of the circulation pump, and then detects the water level detected by the water level detection unit.
  • the circulation pump is driven after the water supply unit supplies water.
  • the load detection unit and the water level detection unit can detect that water or foam has entered the circulation path and supply water. it can. Thereby, the output of the circulation pump is stabilized, and excessive foaming and noise generated during crushing can be suppressed. Furthermore, because the output of the circulation pump is stable, the washing water can be circulated stably and applied to the laundry. As a result, it is possible to realize a drum-type washing machine that can further improve the cleaning performance and the rinsing performance.
  • the load detection unit of the drum type washing machine of the present invention has a configuration for detecting the drive current value of the circulation motor of the circulation pump.
  • the load detection unit can be configured with a current sensor required for inverter driving. Therefore, an inexpensive load detector can be realized.
  • the load detection unit of the drum type washing machine of the present invention has a configuration for detecting the drive power amount of the circulation motor of the circulation pump.
  • it can be driven by a driving method such as constant electric energy control using a circulation pump driven by inverter control.
  • a driving method such as constant electric energy control using a circulation pump driven by inverter control.
  • the drum type washing machine of the present invention is useful in technical fields such as a drum type washing machine that suppresses a decrease in the output of the circulation pump and wash the laundry stored in the rotating drum with high cleaning performance.

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

Abstract

La présente invention concerne une machine à laver à tambour qui comprend : un tambour rotatif (4) qui présente une forme cylindrique qui comprend un fond solide ; un réservoir d'eau (3) qui entoure le tambour rotatif (4) ; un ensemble de circulation d'eau (16) qui fait circuler de l'eau de lavage dans le réservoir d'eau (3) en utilisant une pompe de circulation (20) par l'intermédiaire d'un trajet de circulation (31) qui se raccorde au réservoir d'eau (3) ; un moteur (6) qui entraîne le tambour rotatif (4) ; une unité de détection de charge (30) qui détecte la charge de la pompe de circulation (20) ; et une unité de commande (22) qui commande une étape de lavage et/ou une étape de rinçage. Lorsque le moteur (6) et la pompe de circulation (20) sont entraînés, si une fluctuation de charge prescrite de la pompe de circulation (20) est détectée par l'unité de détection de charge (30), l'unité de commande (22) arrête l'entraînement du moteur (6) et le fonctionnement de la pompe de circulation (20). Il est ainsi possible d'éviter que des bulles ou de l'air entrent dans la pompe de circulation (20) et de réduire le moussage ou un bruit excessif.
PCT/JP2012/007178 2011-11-14 2012-11-08 Machine à laver à tambour WO2013073140A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201280055632.7A CN103930609B (zh) 2011-11-14 2012-11-08 滚筒式洗衣机
EP12850049.3A EP2781640A4 (fr) 2011-11-14 2012-11-08 Machine à laver à tambour

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011248318 2011-11-14
JP2011-248318 2011-11-14

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WO2013073140A1 true WO2013073140A1 (fr) 2013-05-23

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PCT/JP2012/007178 WO2013073140A1 (fr) 2011-11-14 2012-11-08 Machine à laver à tambour

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EP (1) EP2781640A4 (fr)
JP (1) JPWO2013073140A1 (fr)
CN (1) CN103930609B (fr)
WO (1) WO2013073140A1 (fr)

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KR101756408B1 (ko) * 2016-04-18 2017-07-11 엘지전자 주식회사 배수펌프 구동장치, 및 이를 구비한 세탁물 처리기기
DE102016212490A1 (de) * 2016-07-08 2018-01-11 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung
DE102016212489A1 (de) * 2016-07-08 2018-01-11 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung
US10541607B2 (en) 2017-05-23 2020-01-21 Whirlpool Corporation Voltage doubling circuit for laundry treating appliance with high power variable frequency drive
CN110396801A (zh) * 2018-01-27 2019-11-01 张太平 一种防泡沫溢出洗衣机
US20210087734A1 (en) * 2018-02-22 2021-03-25 Lg Electronics Inc. Washing apparatus and method for controlling same
KR102146281B1 (ko) * 2018-04-19 2020-08-20 엘지전자 주식회사 배수펌프 구동장치, 및 이를 구비한 세탁물 처리기기
KR102539460B1 (ko) * 2018-07-06 2023-06-01 엘지전자 주식회사 세탁물 처리기기
KR102578681B1 (ko) 2018-07-06 2023-09-13 엘지전자 주식회사 세탁물 처리기기
KR102603619B1 (ko) * 2018-07-06 2023-11-16 엘지전자 주식회사 배수펌프 구동장치, 및 이를 구비한 세탁물 처리기기

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Also Published As

Publication number Publication date
CN103930609A (zh) 2014-07-16
JPWO2013073140A1 (ja) 2015-04-02
EP2781640A4 (fr) 2015-02-25
CN103930609B (zh) 2016-01-06
EP2781640A1 (fr) 2014-09-24

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