WO2017092534A1 - 一种洗衣机的排水方法 - Google Patents

一种洗衣机的排水方法 Download PDF

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Publication number
WO2017092534A1
WO2017092534A1 PCT/CN2016/103968 CN2016103968W WO2017092534A1 WO 2017092534 A1 WO2017092534 A1 WO 2017092534A1 CN 2016103968 W CN2016103968 W CN 2016103968W WO 2017092534 A1 WO2017092534 A1 WO 2017092534A1
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WO
WIPO (PCT)
Prior art keywords
speed
water
inner cylinder
foam
washing machine
Prior art date
Application number
PCT/CN2016/103968
Other languages
English (en)
French (fr)
Inventor
李文伟
吴军
王海波
王育宝
Original Assignee
青岛海尔滚筒洗衣机有限公司
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 青岛海尔滚筒洗衣机有限公司 filed Critical 青岛海尔滚筒洗衣机有限公司
Priority to EP16869844.7A priority Critical patent/EP3385436B1/en
Priority to JP2018528666A priority patent/JP2019500936A/ja
Priority to AU2016364098A priority patent/AU2016364098B2/en
Priority to US15/781,402 priority patent/US20190062982A1/en
Publication of WO2017092534A1 publication Critical patent/WO2017092534A1/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
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005—Methods for washing, rinsing or spin-drying
    • D06F35/007—Methods for washing, rinsing or spin-drying for spin-drying only
    • 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 
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/36—Driving arrangements  for rotating the receptacle at more than one speed
    • 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
    • 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
    • D06F21/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement 
    • 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
    • D06F2103/24—Spin speed; Drum movements
    • 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
    • D06F2105/48—Drum speed
    • 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
    • D06F2105/52—Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps
    • 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
    • D06F2105/54—Changing between normal operation mode and special operation modes, e.g. service mode, component cleaning mode or stand-by mode
    • 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
    • D06F29/00—Combinations of a washing machine with other separate apparatus in a common frame or the like, e.g. with rinsing apparatus
    • 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
    • D06F31/00—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies
    • 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
    • D06F33/42—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of draining

Definitions

  • the present invention relates to the technical field of washing machines, and in particular to a drainage method for a washing machine.
  • the drum washing machine has an outer cylinder and a drum set in the outer cylinder.
  • the door cover of the drum washing machine is generally disposed on the front panel, and the sealing between the door cover and the outer cylinder needs to be better, so that the washing machine is in the washing process.
  • the pressure is greater.
  • the drum washing machine is for drainage, that is, the drain pipe has an ascending section, and a drain pump is arranged on the drain pipe for passing the water pump in the drain pipe through the ascending section, and then flowing out of the drain pipe.
  • the amount of detergent required differs depending on the amount of laundry, the material, and the degree of soiling; and even if the same laundry is washed, different brands of detergent may be required to be different. Therefore, if the user uses the washing machine, too much detergent may be added, which will cause more foam in the outer cylinder, and the sealing performance of the drum washing machine is better, the foam is not easily broken, and the pressure in the outer cylinder is increased. The foam may overflow the washing machine; especially in the dewatering stage, the drum will rotate at a high speed, and the foam will be more and more. In addition, in the case of adding a lot of detergent, it is often the case that the washed laundry is not cleaned, and the laundry has a large detergent taste.
  • the present invention provides a drainage method for a washing machine, in which more foam can be discharged from the washing machine, the washing effect of the washing machine is increased, and the overflow of the foam is prevented. [0006] In order to achieve the above technical purpose, the present invention is implemented by the following technical solutions:
  • a method of draining a washing machine comprising an outer cylinder for holding washing water, an inner cylinder fitted in the outer cylinder, a motor for driving the inner cylinder to rotate, and
  • the drainage system connected to the bottom of the outer cylinder includes at least a drain pump and a drain pipe; the draining method sequentially includes the following steps: an emptying step of controlling the drain pump to intermittently work until the water level in the outer cylinder reaches the set row An empty water level; a dehydration step, controlling the motor to drive the inner cylinder to rotate for dehydration, and simultaneously controlling the drainage pump to intermittently work.
  • the intermittent operation of the drain pump is: 10 ⁇ 20S in the working day and 2 ⁇ 10S in the stop.
  • the intermittent operation of the drain pump is: 12 ⁇ 18S in the working chamber and 4 ⁇ 6S in the stop.
  • the emptying step has a step of detecting a water level in the outer cylinder and comparing the detection result with a set empty water level; when the detection result is higher than a set empty water level, The drain pump continues to operate intermittently, and when the detection result is equal to or less than the set empty water level, the drain pump stops.
  • the balancing step and the dehydrating step further have a balancing load step, wherein the balancing load step is: controlling the motor to drive the inner cylinder to rotate according to a set distribution speed, and passing through the detecting station The change in the rotational speed of the inner cylinder determines whether the laundry in the inner cylinder is evenly distributed.
  • the step of balancing the load is: passing the rotational speed of the plurality of points on the rotating shaft of the inner cylinder, and respectively comparing with the set distributed rotational speed, if the difference is within the set range, then the inner cylinder The laundry distribution is balanced, the balancing load step ends; if the difference is not within the set range, the laundry distribution in the inner cylinder is unbalanced, and the balancing load step continues.
  • the distributed rotation speed is 90 to 120 rpm.
  • the distributed rotation speed is 90 ⁇ 100 rpm.
  • the dehydrating step includes a low-speed dehydration step, and the low-speed dehydration step is: a, controlling the motor to drive the inner cylinder to rotate at a speed to perform dehydration, and simultaneously the drain pump intermittently operates;
  • the maximum speed of the inner cylinder of the low speed dewatering is the first rotation speed;
  • b detecting the water level in the outer cylinder to determine whether the foam in the washing machine is super value, if the foam is not overvalued, performing step c; If the foam exceeds the value, the defoaming process is performed, and then the step a is continued;
  • the defoaming process is: controlling the motor to drive the inner cylinder to slow down to a set distributed speed, and then the water is introduced into the washing machine.
  • the drain pump is intermittently operated at the same time as the water inlet; c. detecting the rotation speed of the inner cylinder and determining whether the first rotation speed is reached; If the rotational speed reaches the first rotational speed, the low-speed dehydration step ends; if the rotational speed is less than the first rotational speed, the defoaming procedure is performed, and then step a is continued.
  • the first rotation speed is 350 to 450 rpm.
  • the intermittent operation of the drain pump in step a is: 10 ⁇ 20S in the working day and 2 ⁇ 10S in the stop.
  • the intermittent operation of the drain pump is: 12 ⁇ 18S in the working day and 4 ⁇ 6S in the stop time.
  • the water inflow in the defoaming process is 30 ⁇ 60S.
  • the intermittent operation of the drain pump is: 8 ⁇ 12S in the working chamber and 2 ⁇ 6S in the stop.
  • the distributed rotation speed is 90 to 100 rpm.
  • step b it is determined whether the foam in the outer cylinder is overvalued by detecting the water level in the outer cylinder and comparing the detection result with the set foam water level; when the water level in the outer cylinder is equal to or greater than The determined foam level is determined to be the value of the foam in the outer cylinder.
  • the motor drives the inner cylinder to slow down to a set distribution speed.
  • the dehydrating step further includes a high-speed dehydration step after the low-speed dehydration step, and the high-speed dehydration step is: A. controlling the motor to drive the inner cylinder to rotate at a speed to perform dehydration, and the same The drain pump intermittently operates; the high speed dehydration is set, the maximum speed of the inner cylinder is the second speed; B, detecting whether the inner cylinder can reach the second speed in the set day to judge the washing machine Whether the medium foam is super value; if the foam is not overvalued, the high speed dehydration step ends, the motor stops; if the foam exceeds value, a defoaming procedure is performed, and then step A is continued; the defoaming
  • the program is: controlling the motor to drive the inner cylinder to decelerate to a set distributed speed, and then inject water into the washing machine in the set time zone, and intermittently operate the drain pump in the same water inlet.
  • the second rotation speed is 500 to 1000 rpm.
  • the dehydrating step further includes a dehydration step after the high-speed dehydration step, wherein the dehydration step is: controlling the motor to drive the inner cylinder to accelerate to deceleration at a third rotation speed.
  • the drain pump intermittently operates; after detecting that the fixed dewatering reaches the set time, the motor stops and the drain pump is closed.
  • the third rotation speed is 1100 ⁇ 1200 rpm.
  • the drainage system includes a drain valve, and the drain valve is in a snoring state in the draining method.
  • the washing machine is a double washing tub washing machine, the washing machine further has a second washing system, and the second washing system includes a second outer cylinder and a second drain pipe connected to the second outer cylinder.
  • a second drain valve is disposed on the second drain pipe;
  • the drain pipe has a bottom section, a rising section and a free section, the bottom section is in communication with the outer cylinder, and the bottom section is provided with a drain valve and a drain pump,
  • the second drain pipe is connected to the bottom section between the drain valve and the drain pump;
  • the draining method further includes determining whether the drain pump or the drain pipe is washed by another before the emptying step The system takes up steps, and if the drain pump is occupied, it needs to wait.
  • the drainage method of the washing machine provided by the present invention, by controlling the intermittent operation of the drain pump, the drain pump works, the wash water in the outer cylinder enters the drain pipe, is pumped by the drain pump, and passes through the ascending section on the drain pipe. Discharge; when the drain pump stops working, the washing water in the rising section on the drain pipe is recirculated under the action of gravity, so that the alternate operation and stop of the drain pump causes the washing water in the rising section to intermittently return, which is beneficial to The foam floating on the washing water is taken out of the washing machine; thereby increasing the washing effect of the washing machine and preventing the overflow of the foam.
  • FIG. 1 is a schematic structural view of an embodiment of a drainage method of a washing machine according to the present invention
  • FIG. 2 is a control flow chart of the drainage method of the washing machine of FIG. 1;
  • FIG. 3 is a schematic structural view of an embodiment of a drainage method of a washing machine according to the present invention.
  • FIG. 4 is a control flow chart of the drainage method of the washing machine of FIG. 3;
  • FIG. 5 is a schematic structural view of an embodiment of a drainage method of a washing machine according to the present invention.
  • the washing machine is an upper drain washing machine, as shown in FIG. 1, the washing machine includes a box 1 and an outer tube 2 , an inner cylinder, a motor, and a drainage system connected to the bottom of the outer cylinder 2, the drainage system includes a drain pipe 3 and a drain pump 4, wherein the outer cylinder 2 is for holding the washing water, and the inner cylinder is set in the outer cylinder 1 for
  • the laundry pipe 3 has a bottom section 31, a rising section 32 and a free section 33.
  • the bottom section 31 communicates with the bottom of the outer cylinder 2, the rising section 32 is fixed to the casing 1, and the drain pump 4 is disposed at the bottom section 31.
  • the upper part is used for pumping the washing water through the rising section 32, and the motor is fixed on the outer cylinder 2 to drive the inner cylinder to rotate.
  • FIG. 2 it is a flow control diagram of the drainage method of the washing machine in the embodiment.
  • the drainage method of the washing machine includes an emptying step and a dehydrating step, wherein the emptying step is: controlling the drainage pump 4 to intermittently work. Until the water level in the outer cylinder 2 reaches the set empty water level.
  • the dehydration step is: Control the motor to rotate for dehydration, and the drain pump 4 continues to work intermittently. Drain pump 4 Intermittent operation is the drain pump 4 work and stop alternately.
  • the drain pump 4 By controlling the drain pump 4 to operate intermittently, after the drain pump 4 is operated, the washing water in the outer cylinder 2 enters the drain pipe 3, is pumped by the drain pump 4, and is discharged through the ascending section 32 on the drain pipe 3; The pump 4 stops working, so that the washing water of the rising section located on the drain pipe 3 is returned by gravity, so that the alternate operation and stop of the drain pump 4 causes the washing water of the rising section to also intermittently return, which is advantageous for floating in the The foam on the washing water brings out the washing machine; thereby increasing the washing effect of the washing machine and preventing the overflow of the foam.
  • the washing water in the rising section intermittently returns to the washing water remaining in the washing machine, Cause Washing the surface of the water surface so that part of the foam on the surface of the washing water is taken up into the drain pipe 4, and after the drain pump 4 is operated, it is pumped through the rising section and then discharged out of the washing machine; second, the remaining washing water in the washing machine is less, If the washing water cannot fill the inner cavity of the drain pump 4, part of the air enters, the drain pump 4 cannot send the washing water pump; the washing water passing through the rising section 32 is intermittently returned, so that the washing water squeezes the air in the drain pump 4.
  • the drain pump 4 can continue to operate effectively, and the foam also floats upward in the rising section 32 of the drain pipe 3, so that the foam first reaches the free end 33 and exits the washing machine, after which the washing water is discharged, and the drain pump 4 stops at the ascending section 32.
  • the wash water in the bottom is returned to the bottom section 31; this discharges the foam out of the washing machine and returns the wash water in the rising section 32 so that more foam is discharged.
  • the intermittent operation of the drain pump 4 is set to: 10 ⁇ 20S in the working day and 2 ⁇ 10S in the stop time; the preferred setting is: 12 ⁇ 18S in the working day and 4 ⁇ 6S in the stop time. More preferable settings: 1 5S for work time and 5S for stop time.
  • the generally empty water level is set to the water level at the bottom of the outer cylinder 2, that is, when the water level in the outer cylinder 2 is detected to reach the bottom of the outer cylinder 2, the emptying is performed. The step ends and then proceeds to the next step.
  • the balancing load step is: controlling the motor to drive the inner cylinder to rotate according to the set distributed speed; detecting the rotational speed of multiple points on the motor shaft, and respectively setting with When the distributed rotational speed is compared, if the difference is within the set range, the laundry in the inner cylinder is evenly distributed, and the balanced load step ends; if the difference is not within the set range, the laundry in the inner cylinder is distributed. Uneven, the balancing load step continues.
  • the distributed rotational speed is set to 90 to 120 rpm (revolutions per minute), that is, the rotational speed of the inner cylinder is 90 to 1 20 rpm, preferably set to 90 to 100 pm, and more preferably set to 95 rpm.
  • the dehydration step includes a low-speed dehydration step and a high-speed dehydration step.
  • the low speed dehydration step is:
  • a control the motor to drive the inner cylinder to rotate at a speed to perform dehydration, and the same drain pump 4 intermittently operates; set the low speed dewatering ⁇ the maximum speed of the inner cylinder is the first rotation speed.
  • the first rotation speed is set to 350 to 450 rpm, and the first rotation speed is preferably set to 400 rpm. That is to say, the motor speed is controlled to increase from the distributed speed.
  • Drain pump 4 Intermittent operation is set to: 12 ⁇ 18S in the working chamber and 4 ⁇ 6S in the stop. The preferred setting is: 15S between work hours and 5S at stop time.
  • step b Detecting the water level in the outer cylinder 2 to determine whether the foam in the washing machine is excessive. If the foam does not exceed the value, step c is performed; if the foam is overvalued, the defoaming procedure is performed, and then step a is continued.
  • the defoaming procedure is as follows: The control motor drives the inner cylinder to decelerate to a set distributed speed, and then the water is introduced into the washing machine for a certain period of time, and the same drainage pump in the water inlet intermittently works.
  • the foam in the outer cylinder 2 is exceeded by detecting the water level in the outer cylinder 2 and comparing the detection result with the set foam water level; when the water level in the outer cylinder is equal to or greater than the set value
  • the foam water level is judged to be a value of the foam in the outer cylinder.
  • the foam water level can be set to the water level at the lower end of the inner cylinder.
  • the motor In the defoaming procedure, the motor is driven to lower the inner cylinder to the distributed rotational speed, one is to avoid the rapid rotation of the foam, the foam continues to increase, and the foam overflow; and the excessive load caused by the increase of the foam, damage to the motor itself;
  • the second is to avoid the influx of water only to eliminate the partially formed foam, but before it has enough time to get in full contact with the clothes, it is directly taken out and discharged to the washing machine.
  • the third is to reduce the distribution speed, in order to drive the rotation of the inner cylinder by the motor, so that the clothes in the inner cylinder are in full contact with the influent water, absorb water, and rinse, and take away the foaming components in the detergent adsorbed on the clothes. , discharged by washing water pump. This not only eliminates the foam formed in the washing machine, but also plays a certain rinsing effect on the laundry, reduces the amount of foam that may be formed in the washing machine, and tries to avoid the value of the foam again.
  • the intermittent operation of the drain pump 4 is: 12 ⁇ 18S in the working day and 2 ⁇ 6S in the stop time; the preferred setting is: 10S in the working day and 5S in the stop time.
  • the shortening of the working time of the drain pump 4 in the step a a large amount of the formed foam pump is sent out to the washing machine as much as possible to increase the effect of defoaming.
  • Set the water The time is 30 ⁇ 60S.
  • the defoaming procedure is: the control motor drives the inner cylinder to decelerate to a set distributed speed, and then the water is introduced into the washing machine for a certain period of time, and the same drainage pump in the water inlet intermittently works.
  • the motor drives the inner cylinder to decelerate to a set distributed rotational speed, and enters a high-speed dehydration step, and the high-speed dehydration step is:
  • control motor drives the inner cylinder to rotate at a rising speed for dehydration, and the same drainage pump 4 intermittently operates; the maximum speed of the inner cylinder of the high-speed dehydration is set to be the second rotation speed;
  • the second rotation speed is set to 800 to 1200 rpm, that is, the maximum rotation speed of the inner cylinder is 800 to 1200 rpm; and the second rotation speed is preferably set to 1000 rpm.
  • Drain pump 4 Intermittent operation is set to: 12 ⁇ 18 S in working day and 4 ⁇ 6S in stop time. The preferred setting is: 15S between work hours and 5S at stop time.
  • the rotation speed of the rotation of the inner cylinder by the motor is further increased, so that the washing water adsorbed in the laundry in the inner cylinder is further taken out; and intermittently operates by the drain pump 4, so that more foam is discharged.
  • step B detecting whether the inner cylinder can reach the second rotation speed in the setting time to determine whether the foam in the washing machine is excessive; if the foam is not overvalued, the high-speed dehydration step ends, and the motor stops; if the foam exceeds value, Then, the defoaming process is performed, and then step A is continued.
  • the defoaming program is: the control motor drives the inner cylinder to decelerate to a set distributed speed, and then the water is introduced into the washing machine for a certain period of time, and the same drainage pump in the water inlet intermittently works.
  • this step it can be set whether the rotation speed of the inner cylinder can be from 400 in the 3 ⁇ 8S between the setting days.
  • the rpm reached 1000 rpm. Whether or not the foam is excessive in the high-speed dehydration step is detected by detecting whether the second rotation speed can be reached in the set day.
  • the dehydration step further includes dehydration after the high-speed dehydration step.
  • the other steps can be the same as in the first drain method.
  • the washing machine includes a casing 1, an outer cylinder 2, an inner cylinder, a motor, and a drainage system communicating with the bottom of the outer cylinder 2.
  • the drainage system includes a drain pipe 3, a drain pump 4, and a drain valve 5,
  • the outer cylinder 2 is for holding the washing water
  • the inner cylinder is set in the outer cylinder 1 for accommodating the laundry to be washed
  • the drain pipe 3 has a bottom section 31, a rising section 32 and a free section 33, and the bottom section 31 and the outer cylinder 2
  • the bottom portion is connected, the rising portion 32 is fixed on the casing 1, and the drain pump 4 and the drain valve are disposed on the bottom portion 31 for pumping the washing water through the rising portion 32, and the motor is fixed on the outer cylinder 2 to drive the inner cylinder to rotate.
  • a draining method of the washing machine includes an emptying step and a dehydrating step, and the snoring drain valve 5 is controlled before the emptying step, At the end of the drainage method, close the drain valve 5.
  • the emptying step is: Control the drain pump 4 Intermittent work until the water level in the outer cylinder 2 reaches the set emptying level.
  • the dehydration step is: Control the motor to rotate for dehydration, and the same drain pump 4 continues to work intermittently. Drain pump 4 Intermittent work is the drain pump 4 work and stop alternately.
  • the drain pump 4 By controlling the drain pump 4 to operate intermittently, after the drain pump 4 is operated, the washing water in the outer cylinder 2 enters the drain pipe 3, is pumped by the drain pump 4, and is discharged through the rising section 32 on the drain pipe 3; The pump 4 stops working, so that the washing water of the rising section located on the drain pipe 3 is returned by gravity, so that the alternate operation and stop of the drain pump 4 causes the washing water of the rising section to also intermittently return, which is advantageous for floating in the The foam on the washing water brings out the washing machine; thereby increasing the washing effect of the washing machine and preventing the overflow of the foam.
  • the inner cylinder is stationary, and the washing water surface in the cylinder 2 is smoothly decreased with the discharge of the washing water; therefore, the washing water in the rising section intermittently flows back to impact the remaining washing water in the washing machine, causing Washing the surface of the water so that part of the foam on the washing water surface is drawn into the drain pipe 4 and in the drain pump 4
  • the working raft is pumped through the rising section and then discharged out of the washing machine; second, the remaining washing water in the washing machine is less ⁇
  • the drain pump 4 cannot send the washing water pump; the washing water passing through the rising section 32 is intermittently returned, so that the washing water will bring the air in the drain pump 4 Extrusion, the drain pump 4 can continue to work effectively, and the foam also floats upward in the rising section 32 of the drain pipe 3, so that the foam first reaches the free end 33 to discharge the washing machine, and then the washing water is discharged, after the drain pump 4 is stopped, the rising section is located.
  • the wash water in 32 is returned to the bottom section 31; this discharges the foam out of the washing machine and returns the wash water in the ascending section 32 so that more foam is discharged.
  • the intermittent operation of the drain pump 4 is set to: 10 ⁇ 20S in the working day and 2 ⁇ 10S in the stop time; the preferred setting is: 12 ⁇ 18S in the working day, 4 ⁇ 6S in the stop time. More preferable settings: 1 5S for work time and 5S for stop time.
  • the generally empty water level is set to the water level at the bottom of the outer cylinder 2, that is, when the water level in the outer cylinder 2 is detected to reach the bottom of the outer cylinder 2, the emptying is performed. The step ends and then proceeds to the next step.
  • the balancing load step is: controlling the motor to drive the inner cylinder to rotate according to the set distributed speed; detecting the multiple speeds on the motor shaft, and respectively setting with When the distributed rotational speed is compared, if the difference is within the set range, the laundry in the inner cylinder is evenly distributed, and the balanced load step ends; if the difference is not within the set range, the laundry in the inner cylinder is distributed. Uneven, the balancing load step continues.
  • the distributed rotational speed is set to 90 to 120 rpm (revolutions per minute), that is, the rotational speed of the inner cylinder is 90 to 1 20 rpm, preferably set to 93 to 100 rpm, and more preferably set to 95 rpm.
  • the laundry located in the inner cylinder is redistributed to avoid excessive vibration caused by uneven load distribution in the dehydration step; and the load is judged by detecting the rotation speed change of the motor shaft Whether it is evenly distributed.
  • the dehydration step includes a low-speed dehydration step, a high-speed dehydration step, and a dehydration step. among them , the low speed dehydration step is:
  • the control motor drives the inner cylinder to rotate at a speed to perform dehydration, and the same drain pump 4 intermittently operates; the maximum speed of the inner cylinder of the low speed dewatering is set to be the first rotation speed.
  • the first rotation speed is set to 350 to 450 rpm, and the first rotation speed is preferably set to 400 rpm. That is to say, the motor speed is controlled to increase from the distributed speed.
  • Drain pump 4 Intermittent operation is set to: 12 ⁇ 18S in the working chamber and 4 ⁇ 6S in the stop. The preferred setting is: 15S between work hours and 5S at stop time.
  • step b Detecting the water level in the outer cylinder 2 to determine whether the foam in the washing machine is excessive. If the foam does not exceed the value, step c is performed; if the foam is overvalued, the defoaming procedure is performed, and then step a is continued.
  • the defoaming procedure is as follows: The control motor drives the inner cylinder to decelerate to a set distributed speed, and then the water is introduced into the washing machine for a certain period of time, and the same type of drain pump in the water inlet intermittently works.
  • the foam in the outer cylinder 2 is overvalued by detecting the water level in the outer cylinder 2 and comparing the detection result with the set foam water level; when the water level in the outer cylinder is equal to or greater than the set value
  • the foam water level is judged to be a value of the foam in the outer cylinder.
  • the foam water level can be set to the water level at the lower end of the inner cylinder.
  • the intermittent operation of the drain pump 4 is: 12 ⁇ 18S in the working day and 2 ⁇ 6S in the stop time; the preferred setting is: 10S in the working day and 5S in the stop.
  • the shortening of the working time of the drain pump 4 in the step a a large amount of the formed foam pump is sent out to the washing machine as much as possible to increase the effect of defoaming.
  • Set the inlet water to 30 ⁇ 60S.
  • step c detecting the rotation speed of the inner cylinder and determining whether the first rotation speed is reached; if the rotation speed reaches the first rotation speed, the low speed dewatering step ends; if the rotation speed is less than the first rotation speed, the defoaming procedure is performed, and then step a is continued.
  • the defoaming procedure is as follows: The control motor drives the inner cylinder to decelerate to a set distributed speed, and then the water is introduced into the washing machine for a certain period of time, and the same drainage pump in the water inlet intermittently works.
  • the motor drives the inner cylinder to decelerate to a set distributed rotational speed, and enters a high-speed dehydration step, and the high-speed dehydration step is:
  • control motor drives the inner cylinder to rotate at a rising speed for dehydration, and the same drainage pump 4 intermittently operates; the maximum speed of the inner cylinder of the high-speed dehydration is set to be the second rotation speed;
  • the second rotation speed is set to 800 to 1000 rpm, that is, the maximum rotation speed of the inner cylinder is 800 to 1000 rpm; and the second rotation speed is preferably set to 800 rpm.
  • Drain pump 4 Intermittent operation is set to: 12 ⁇ 18 S in working day and 4 ⁇ 6S in stop time. The preferred setting is: 15S between work hours and 5S at stop time.
  • the rotation speed of the rotation of the inner cylinder by the motor is further increased, so that the washing water adsorbed in the laundry in the inner cylinder is further scooped out; and intermittently operates by the drain pump 4, so that more foam is discharged.
  • step B detecting whether the inner cylinder can reach the second rotation speed in the setting day to determine whether the foam in the washing machine is excessive; if the foam is not overvalued, the high-speed dehydration step ends, and the motor stops; if the foam exceeds value, Then, the defoaming process is performed, and then step A is continued.
  • the defoaming procedure is as follows: The control motor drives the inner cylinder to decelerate to a set distributed speed, and then the water is introduced into the washing machine for a certain period of time, and the same drainage pump in the water inlet intermittently works.
  • this step it can be set to determine whether the rotation speed of the inner cylinder can be from 400 in the set time between 3 and 8 seconds.
  • the rpm reached 800 rpm. Detecting high speed off by detecting whether the second speed can be reached within the set time Whether the foam is worth the water step.
  • the dehydration step is: controlling the motor to start, and driving the inner cylinder to accelerate to the third rotation speed, and the same drainage pump 4 intermittently operates; After the dehydration reaches the set time, the motor stops, the drain pump 4 closes, the drain valve 5 closes, and the drain ends.
  • the third rotation speed is set to be 1100 to 1200 rpm, that is, the rotation speed of the inner cylinder is 1100 to 1200 rpm, and the third rotation speed is preferably set to 1200 rpm.
  • Drain pump 4 Intermittent work is set to: 12 ⁇ 18S in the working day and 4 ⁇ 6S in the stop time. The preferred setting is: 15S between work hours and 5S at stop time.
  • FIG. 5 to FIG. 6 which is a third embodiment of the drainage method of the washing machine proposed by the present invention
  • the main difference from the second embodiment is that the washing machine in this embodiment is a double drum washing machine. , share a drain and drain pump.
  • the washing machine is a double drum washing machine including a box body 1 and a first washing system and a second washing system disposed in the box body 1.
  • the first washing system has an outer tube 2, an inner tube, a motor, a drainage system communicating with the bottom of the outer cylinder 2, the drainage system comprising a drain pipe 3, a drain pump 4 and a drain valve 5, wherein the outer cylinder 2 is for holding washing water, and the inner cylinder is set in the outer cylinder 1 for receiving Washing the laundry;
  • the drain pipe 3 has a bottom section 3 1 , a rising section 32 and a free section 33 , the bottom section 31 is in communication with the bottom of the outer cylinder 2 , the rising section 32 is fixed on the tank 1 , the drain pump 4 and the drain valve are arranged at the bottom In the segment 31, the washing water pump is sent through the rising section 32, and the motor is fixed on the outer cylinder 2 to drive the inner cylinder to rotate.
  • the second washing system includes a second outer cylinder 6, a second drain pipe 7 communicating with the second outer cylinder 6, and a second drain valve 8 disposed on the second drain pipe; the second drain pipe 7 is connected to the drain valve 5 and The bottom section 31 between the drain pumps 4; such that the first washing system and the second washing system share the lift section 32 and the free section 33 on the drain pump 4 and the drain 3. Therefore, the two systems cannot be drained at the same time, and it is necessary to first judge whether the drain pump 4 is occupied.
  • the drainage method of the double drum washing machine is described below by taking the drainage of the main washing system as an example.
  • FIG. 6 which is a control flow chart of the drainage method in the embodiment, the drainage method of the washing machine sequentially includes determining whether the water can be drained. Steps, emptying steps and dehydrating steps.
  • the step of determining whether the water can be drained is: determining whether the drain pump 4 is occupied by the second washing system, and if the drain pump 4 is occupied, it is necessary to wait; if the drain pump 4 is not occupied, the drain valve 5 is slammed Emptying steps.
  • the emptying step is: controlling the drain pump 4 to work intermittently until the water level in the outer cylinder 2 reaches the set emptying water level.
  • the dehydration step is: controlling the rotation of the motor for dehydration, and the drainage pump 4 continues to work intermittently.
  • the intermittent operation of the drain pump 4 means that the drain pump 4 operates alternately and stops.
  • the drain pump 4 By controlling the drain pump 4 to operate intermittently, after the drain pump 4 is operated, the washing water in the outer cylinder 2 enters the drain pipe 3, is pumped by the drain pump 4, and is discharged through the ascending section 32 on the drain pipe 3; The pump 4 stops working, so that the washing water of the rising section located on the drain pipe 3 is returned by gravity, so that the alternate operation and stop of the drain pump 4 causes the washing water of the rising section to also intermittently return, which is advantageous for floating in the The foam on the washing water brings out the washing machine; thereby increasing the washing effect of the washing machine and preventing the overflow of the foam.
  • the washing water in the rising section intermittently returns to the washing water remaining in the washing machine, causing the washing water surface to sway, so that part of the foam located on the washing water surface is caught in the drain pipe 4, And after the drain pump 4 is working, it is pumped through the rising section and then discharged out of the washing machine; second, the remaining washing water in the washing machine is less, such as the washing water can not fill the inner cavity of the drain pump 4, and some air enters, then the drainage
  • the pump 4 cannot send the washing water pump; the washing water passing through the rising section 32 is intermittently returned, so that the washing water squeezes the air in the drain pump 4, the drain pump 4 can continue to work effectively, and the foam is in the rising section 32 of the drain pipe 3.
  • the middle also floats upwards, so that the foam first reaches the free end 33 to discharge the washing machine, and then the washing water is discharged, and the drain water pump 4 stops the washing water in the rising section 32 to return to the bottom section 31; thus discharging the foam out of the washing machine, and will be in the ascending section
  • the wash water in 32 is refluxed so that more foam is discharged.
  • the intermittent operation of the drain pump 4 is set to be 12 ⁇ 18S in the working chamber and 4 ⁇ 6S in the stop.
  • the preferred setting is 15S for the workroom and 5S for the stoppage.
  • the generally empty water level is set to the water level at the bottom of the outer cylinder 2, that is, when the water level in the outer cylinder 2 is detected to reach the bottom of the outer cylinder 2, the emptying is performed. The step ends and then proceeds to the next step.
  • the balancing load step is: controlling the motor to drive the inner cylinder to rotate according to the set distributed speed; detecting the rotational speed of multiple points on the motor shaft, and respectively setting with Minute Comparing the rotation speeds of the cloths, if the difference is within the set range, the laundry in the inner cylinder is evenly distributed, and the balancing load step ends; if the difference is not within the set range, the laundry distribution in the inner cylinder Uneven, the balancing load step continues.
  • the distributed rotational speed is set to 90 ⁇ 100 rpm (rev/min), that is, the rotational speed of the inner cylinder is 90 ⁇ 1.
  • OOrpm preferably set to 93 to 95 rpm, more preferably set to 95 rpm.
  • the motor is driven to rotate the inner cylinder according to the set distributed rotation speed, so that the laundry located in the inner cylinder is redistributed to avoid excessive vibration caused by the uneven distribution of the load; and the load is judged by detecting the rotation speed of the motor shaft. Whether it is evenly distributed.
  • the dehydration step includes a low-speed dehydration step, a high-speed dehydration step, and a dehydration step. among them
  • the low speed dehydration step is:
  • the control motor drives the inner cylinder to rotate at a speed to perform dehydration, and the same drain pump 4 intermittently operates; the maximum speed of the inner cylinder of the low speed dewatering is set to be the first rotation speed.
  • the first rotational speed is set to be 350 to 450 rpm, and the first rotational speed is preferably set to 400 rpm. That is to say, the motor speed is controlled to increase from the distributed speed.
  • Drain pump 4 Intermittent operation is set to: 12 ⁇ 18S in the working chamber and 4 ⁇ 6S in the stop. The preferred setting is: 15S between work hours and 5S at stop time.
  • step b Detecting the water level in the outer cylinder 2 to determine whether the foam in the washing machine is excessive. If the foam is not overvalue, perform step c; if the foam is overvalued, perform a defoaming procedure, and then continue to perform step a.
  • the defoaming procedure is as follows: The control motor drives the inner cylinder to decelerate to a set distributed speed, and then the water is introduced into the washing machine for a certain period of time, and the same drainage pump in the water inlet intermittently operates.
  • the foam in the outer cylinder 2 is exceeded is determined by detecting the water level in the outer cylinder 2 and comparing the detection result with the set foam water level; when the water level in the outer cylinder is equal to or greater than the set value The foam water level is judged to be a value of the foam in the outer cylinder.
  • the foam water level can be set to the water level at the lower end of the inner cylinder.
  • the motor In the defoaming procedure, the motor is driven to lower the inner cylinder to the distributed rotational speed, one is to avoid the rapid rotation of the foam, the foam continues to increase, and the foam overflow; and the excessive load caused by the increase of the foam, damage to the motor itself;
  • the second is to avoid the influx of water just to eliminate the part of the formed foam, but have not had time to fully with the clothing After contact, it is directly taken out and discharged from the washing machine.
  • the third is to reduce the distribution speed, in order to drive the rotation of the inner cylinder by the motor, so that the clothes in the inner cylinder are in full contact with the influent water, absorb water, and rinse, and take away the foaming components in the detergent adsorbed on the clothes. , discharged by washing water pump. This not only eliminates the foam formed in the washing machine, but also plays a certain rinsing effect on the laundry, reduces the amount of foam that may be formed in the washing machine, and tries to avoid the value of the foam again.
  • the intermittent operation of the drain pump 4 is: 12 ⁇ 18S in the working day and 2 ⁇ 6S in the stop time; the preferred setting is: 10S in the working day and 5S in the stop.
  • the more shaped foam pump is sent out of the washing machine to increase the effect of defoaming.
  • step c Detecting the rotation speed of the inner cylinder and determining whether the first rotation speed is reached; if the rotation speed reaches the first rotation speed, the low speed dewatering step ends; if the rotation speed is lower than the first rotation speed, the defoaming procedure is performed, and then step a is continued.
  • the defoaming procedure is as follows: The control motor drives the inner cylinder to decelerate to a set distributed speed, and then the water is introduced into the washing machine for a certain period of time, and the same drainage pump in the water inlet intermittently works.
  • the motor drives the inner cylinder to decelerate to a set distributed rotational speed, and enters a high-speed dehydration step, and the high-speed dehydration step is:
  • control motor drives the inner cylinder to rotate at a rising speed for dehydration, and the same drain pump 4 intermittently operates; the maximum speed of the inner cylinder of the high-speed dehydration is set to be the second rotation speed;
  • the second rotation speed is set to 800 to 1000 rpm, that is, the maximum rotation speed of the inner cylinder is 800 to 1000 rpm; and the second rotation speed is preferably set to 800 rpm.
  • the intermittent operation of the drain pump 4 is set to: 12 ⁇ 18 S in the working chamber and 4 ⁇ 6S in the stop. Preferably, the setting is: 15S in the working day and 5S in the stop time.
  • the rotation speed of the rotation of the inner cylinder by the motor is further increased, so that the washing water adsorbed in the laundry in the inner cylinder is further taken out; and intermittently operates by the drain pump 4, so that more foam is discharged.
  • step A If the foam does not exceed the value, the high-speed dehydration step ends and the motor stops. If the foam exceeds the value, the defoaming procedure is performed, and then step A is continued.
  • the defoaming procedure is as follows: The control motor drives the inner cylinder to decelerate to a set distributed speed, and then the water is introduced into the washing machine for a certain period of time, and the same drainage pump in the water inlet intermittently works.
  • this step it can be set whether the rotation speed of the inner cylinder can be from 400 in the set time between 3 and 8 seconds.
  • the dehydration step is: controlling the motor to start, and driving the inner cylinder to accelerate to the third rotation speed, and the same drainage pump 4 intermittently operates; After the dehydration reaches the set time, the motor stops, the drain pump 4 closes, the drain valve 5 closes, and the drain ends.
  • the third rotation speed is set to be 1100 to 1200 rpm, that is, the rotation speed of the inner cylinder is 1100 to 1200 rpm, and the third rotation speed is preferably set to 1200 rpm.
  • Drain pump 4 Intermittent work is set to: 12 ⁇ 18S in the working day and 4 ⁇ 6S in the stop time. The preferred setting is: 15S between work hours and 5S at stop time.

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Abstract

一种洗衣机的排水方法，所述排水方法依次包括下述步骤：排空步骤，控制所述排水泵（4）间歇工作直至所述外筒（2）中的水位到达设定的排空水位；脱水步骤，控制所述电机带动所述内筒旋转进行脱水，同时控制所述排水泵（4）间歇工作。通过控制所述排水泵（4）间歇工作，所述排水泵（4）工作时，外筒（2）中的洗涤水进入排水管（3），由排水泵（4）泵送，通过排水管（3）上的上升段排出；当排水泵（4）停止工作，使得位于所述排水管（3）上的上升段的洗涤水在重力的作用下回流，这样排水泵（4）的交替工作和停止，使得上升段的洗涤水也间歇回流，这样有利于将漂浮在洗涤水上的泡沫带出洗衣机；从而增加洗衣机的漂净效果，以及防止泡沫的溢出。

Description

发明名称：一种洗衣机的排水方法
技术领域
[0001] 本发明属于洗衣机技术领域， 具体涉及一种洗衣机的排水方法。
背景技术
[0002] 滚筒洗衣机具有外筒和套装在外筒内的滚筒， 滚筒洗衣机的门盖一般设置在前 板上， 需要设置门盖与外筒之间的密封性较好， 使得在洗涤过程中洗衣机内的 压力较大。 滚筒洗衣机为上排水， 就是排水管具有上升段， 在排水管上设置有 排水泵用于将排水管中的水泵送通过上升段， 之后流出排水管。
[0003] 在利用滚筒洗衣机洗涤衣物吋， 由于洗涤衣物的多少、 材质、 以及脏污程度等 不同需要的洗涤剂量也不同； 并且即使洗涤相同的衣物， 利用不同品牌的洗涤 剂也可能需要不同的量； 因而用户在使用洗衣机吋可能加入的洗涤剂过多， 会 导致外筒内产生较多的泡沫， 加上滚筒洗衣机的密封性较好， 泡沫不易破裂， 使得外筒内的压力增大， 泡沫可能溢出洗衣机； 特别是在脱水阶段滚筒高速旋 转吋， 泡沫会越来越多。 此外， 在洗涤剂加多吋， 经常出现洗涤完成的衣物漂 洗不净， 衣物上有较大的洗涤剂的味道。
技术问题
[0004] 目前， 尤其是在洗涤剂加多吋， 经常出现洗涤完成的衣物漂洗不净， 衣物上有 较大的洗涤剂的味道； 以及在排水的空排阶段， 滚筒不旋转， 洗涤水从外筒底 部经排水管排出， 但已经形成的泡沫漂浮在洗涤水面上， 也就是洗涤水首先被 排出， 泡沫才能到达排水管， 这样只有少量的泡沫能被带出； 大部分泡沫被留 在洗衣机中， 等待后续的漂洗过程中将泡沫消除， 造成了衣物不易被漂洗干净 问题的解决方案
技术解决方案
[0005] 本发明提供一种洗衣机的排水方法， 在排水过程中可以将较多的泡沫从洗衣机 排出， 增加洗衣机的漂净效果， 以及防止泡沫的溢出。 [0006] 为达到上述技术目的， 本发明采用以下技术方案实现：
[0007] 一种洗衣机的排水方法， 所述洗衣机为上排水洗衣机， 包括用于盛放洗涤水的 外筒、 套装在所述外筒内的内筒、 驱动所述内筒旋转的电机、 与外筒底部相连 通的排水系统， 至少包括排水泵和排水管； 所述排水方法依次包括下述步骤： 排空步骤， 控制所述排水泵间歇工作直至所述外筒中的水位到达设定的排空水 位； 脱水步骤， 控制所述电机带动所述内筒旋转进行脱水， 同吋控制所述排水 泵间歇工作。
[0008] 进一步的， 所述排水泵间歇工作为： 工作吋间为 10~20S、 停止吋间为 2~10S。
[0009] 优选的， 所述排水泵间歇工作为： 工作吋间为 12~18S、 停止吋间为 4~6S。
[0010] 进一步的， 所述排空步骤中具有检测所述外筒中的水位、 并将检测结果与设定 的排空水位相比较的步骤； 当检测结果高于设定的排空水位吋， 所述排水泵继 续间歇工作， 当检测结果等于或者小于设定的排空水位吋， 所述排水泵停止。
[0011] 进一步的， 所述排空步骤与脱水步骤之间还具有平衡负载步骤， 所述平衡负载 步骤为： 控制所述电机带动所述内筒按照设定的分布转速旋转， 并通过检测所 述内筒的转速变化判断所述内筒内的衣物是否分布均匀。
[0012] 进一步的， 平衡负载步骤为： 通过所述内筒转轴上多点的转速、 并分别与设定 的分布转速相比较， 如差值均在设定的范围内， 则内筒内的衣物分布平衡， 所 述平衡负载步骤结束； 如差值不在设定的范围内， 则内筒内的衣物分布不平衡 ， 所述平衡负载步骤继续。
[0013] 进一步的， 所述分布转速为 90~120rpm。
[0014] 优选的， 所述分布转速为 90~100rpm。
[0015] 进一步的， 所述脱水步骤包括低速脱水步骤， 所述低速脱水步骤为： a、 控制 所述电机带动所述内筒升速旋转进行脱水， 同吋所述排水泵间歇工作； 设定低 速脱水吋所述内筒的最高转速为第一转速； b、 检测所述外筒中的水位， 来判断 所述洗衣机中泡沫是否超值， 如所述泡沫不超值， 则执行步骤 c ; 如所述泡沫超 值， 则进行消泡程序， 之后继续执行步骤 a; 所述消泡程序为： 控制所述电机带 动所述内筒降速到设定的分布转速， 之后向洗衣机内进水一定吋间， 在进水的 同吋所述排水泵间歇工作； c、 检测所述内筒的转速并判断是否达到第一转速； 如转速达到第一转速， 则所述低速脱水步骤结束； 如转速小于第一转速， 则进 行所述消泡程序， 之后继续执行步骤 a。
[0016] 进一步的， 所述第一转速为 350~450rpm。
[0017] 进一步的， 步骤 a中所述排水泵间歇工作为： 工作吋间为 10~20S、 停止吋间为 2 ~10S。
[0018] 优选的， 所述排水泵间歇工作为： 工作吋间为 12~18S、 停止吋间为 4~6S。
[0019] 进一步的， 所述消泡程序中的进水吋间为 30~60S。
[0020] 进一步的， 所述消泡程序中所述排水泵间歇工作为： 工作吋间为 8~12S、 停止 吋间为 2~6S。
[0021] 进一步的， 所述分布转速为 90~100rpm。
[0022] 进一步的， 步骤 b中通过检测所述外筒中的水位并将检测结果与设定的泡沫水 位相比较来判断所述外筒中的泡沫是否超值； 当外筒中的水位等于或大于设定 的泡沫水位吋， 判断为所述外筒中的泡沫超值。
[0023] 进一步的， 所述低速脱水步骤结束后， 所述电机带动所述内筒降速到设定的分 布转速。
[0024] 进一步的， 所述脱水步骤还包括所述低速脱水步骤之后的高速脱水步骤， 所述 高速脱水步骤为： A、 控制所述电机带动所述内筒升速旋转进行脱水， 同吋所述 排水泵间歇工作； 设定高速脱水吋所述内筒的最高转速为第二转速； B、 检测所 述内筒在设定吋间内能否达到所述第二转速， 来判断所述洗衣机中泡沫是否超 值； 如所述泡沫不超值， 则所述高速脱水步骤结束， 所述电机停止； 如所述泡 沫超值， 则进行消泡程序， 之后继续执行步骤 A; 所述消泡程序为： 控制所述电 机带动所述内筒降速到设定的分布转速， 之后在设定吋间内向洗衣机内进水， 在进水的同吋所述排水泵间歇工作。
[0025] 进一步的， 所述第二转速为 500~1000rpm。
[0026] 进一步的， 所述脱水步骤还包括所述高速脱水步骤之后的定吋脱水步骤， 所述 定吋脱水步骤为： 控制所述电机带动所述内筒升速到第三转速旋转脱水， 同吋 所述排水泵间歇工作； 检测所述定吋脱水到达设定吋间后， 所述电机停止、 所 述排水泵关闭。 [0027] 进一步的， 所述第三转速为 1100~1200rpm。
[0028] 进一步的， 所述排水系统包括排水阀， 在所述排水方法中所述排水阀处于打幵 状态。
[0029] 进一步的， 所述洗衣机为双洗涤筒洗衣机， 所述洗衣机还具有第二洗涤系统， 所述第二洗涤系统包括第二外筒、 与第二外筒相连通的第二排水管， 所述第二 排水管上设置有第二排水阀； 所述排水管具有底段、 上升段和自由段， 所述底 段与外筒连通， 所述底段上设置有排水阀和排水泵， 所述第二排水管连接在所 述排水阀和排水泵之间的所述底段上； 所述排水方法还包括在所述排空步骤之 前判断所述排水泵或排水管是否被另一洗涤系统占用步骤， 如所述排水泵被占 用， 则需要等待。
发明的有益效果
有益效果
[0030] 本发明提供的洗衣机的排水方法， 通过控制所述排水泵间歇工作， 所述排水泵 工作吋， 外筒中的洗涤水进入排水管， 由排水泵泵送， 通过排水管上的上升段 排出； 当排水泵停止工作， 使得位于所述排水管上的上升段的洗涤水在重力的 作用下回流， 这样排水泵的交替工作和停止， 使得上升段的洗涤水也间歇回流 ， 这样有利于将漂浮在洗涤水上的泡沫带出洗衣机； 从而增加洗衣机的漂净效 果， 以及防止泡沫的溢出。
[0031] 结合附图阅读本发明的具体实施方式后， 本发明的其他特点和优点将变得更加 清楚。
对附图的简要说明
附图说明
[0032] 图 1为本发明所提出的洗衣机的排水方法的一个实施例的结构示意图；
[0033] 图 2为图 1中洗衣机的排水方法的控制流程图；
[0034] 图 3为本发明所提出的洗衣机的排水方法的一个实施例的结构示意图；
[0035] 图 4为图 3中洗衣机的排水方法的控制流程图；
[0036] 图 5为本发明所提出的洗衣机的排水方法的一个实施例的结构示意图；
[0037] 图 6为图 5中洗衣机的排水方法的控制流程图。 实施该发明的最佳实施例
本发明的最佳实施方式
[0038] 为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发明实施 例中的附图， 对本发明实施例中的技术方案进行清楚、 完整地描述。
[0039] 在本发明的描述中， 需要说明的是， 术语"上"、 "下"等指示的方位或位置关系 为基于附图所示的位置关系， 仅是为了便于描述本发明和简化描述， 而不是指 示或暗示所指的装置或元件必须具有特定的方位、 以特定的方位构造和操作， 因此不能理解为对本发明的限制。 此外， 术语"第一"、 "第二"、 "第三 "仅用于描 述目的， 而不能理解为指示或暗示相对重要性。
[0040] 参见图 1-图 2， 是本发明所提出的洗衣机的排水方法的第一个实施例， 所述洗 衣机为上排水洗衣机， 参见图 1所示， 洗衣机包括箱体 1、 外筒 2、 内筒、 电机、 与外筒 2底部相连通的排水系统， 排水系统包括排水管 3和排水泵 4， 其中， 外筒 2用于盛放洗涤水， 内筒套装在外筒 1内、 用于容纳待洗涤衣物； 排水管 3具有底 段 31、 上升段 32和自由段 33， 底段 31与外筒 2的底部连通， 上升段 32固定在箱体 1上， 排水泵 4设置在底段 31上、 用于将洗涤水泵送通过上升段 32， 电机固定在 外筒 2上、 带动内筒旋转。
[0041] 参见图 2所示， 是本实施例中洗衣机的排水方法的流程控制图， 一种洗衣机的 排水方法包括排空步骤和脱水步骤， 其中， 排空步骤为： 控制排水泵 4间歇工作 直至外筒 2中的水位到达设定的排空水位。 脱水步骤为： 控制电机旋转进行脱水 ， 同吋排水泵 4继续间歇工作。 排水泵 4间歇工作就是排水泵 4工作和停止交替进 行。
[0042] 通过控制排水泵 4间歇工作， 在排水泵 4工作吋， 外筒 2中的洗涤水进入排水管 3 ， 由排水泵 4泵送， 通过排水管 3上的上升段 32排出； 当排水泵 4停止工作， 使得 位于排水管 3上的上升段的洗涤水在重力的作用下回流， 这样排水泵 4的交替工 作和停止， 使得上升段的洗涤水也间歇回流， 这样有利于将漂浮在洗涤水上的 泡沫带出洗衣机； 从而增加洗衣机的漂净效果， 以及防止泡沫的溢出。 具体的 ， 一是在电机没启动即内筒静止吋， 外筒 2内的洗涤水面随着洗涤水的排出平稳 下降； 此吋， 由于上升段的洗涤水间歇回流冲击洗衣机内剩余的洗涤水， 引起 洗涤水面的荡漾， 使得位于洗涤水面上的部分泡沫被卷入排水管 4、 并在排水泵 4工作吋被泵送通过上升段后排出洗衣机； 二是在洗衣机内剩余的洗涤水较少吋 ， 如洗涤水不能充满排水泵 4的内腔， 会有部分空气进入， 则排水泵 4不能将洗 涤水泵送上去； 通过上升段 32的洗涤水间歇回流， 使得洗涤水将排水泵 4内的空 气挤出， 排水泵 4能继续有效工作， 并且泡沫在排水管 3的上升段 32中也是向上 漂浮， 使得泡沫首先到达自由端 33排出洗衣机、 之后洗涤水排出， 在排水泵 4停 止吋位于上升段 32中的洗涤水回流到底段 31 ; 这样将泡沫排出洗衣机， 并将位 于上升段 32中的洗涤水回流， 使得较多的泡沫被排出。
[0043] 本实施例中， 排水泵 4间歇工作设置为： 工作吋间为 10~20S、 停止吋间为 2~10S ； 优选设置： 工作吋间为 12~18S、 停止吋间为 4~6S ; 更优选设置： 工作吋间为 1 5S、 停止吋间为 5S。
[0044] 在排空步骤中， 外筒 2中水位是否到达设定的排空水位的判断， 通过检测外筒 2 中的水位、 并将检测结果与设定的排空水位相比较； 当检测结果高于设定的排 空水位吋， 排水泵 4继续间歇工作， 当检测结果等于或者小于设定的排空水位吋 ， 排水泵 4停止， 排空步骤结束。
[0045] 对于排空水位可以根据洗衣机机型的不同设置， 一般排空水位设置为外筒 2底 部的水位， 也就是当检测到外筒 2中的水位到达外筒 2的底部吋， 排空步骤结束 ， 之后进入下一步骤。
[0046] 本实施例中， 排空步骤之后为平衡负载步骤， 平衡负载步骤为： 控制电机带动 内筒按照设定的分布转速旋转； 检测电机轴上多点的转速、 并分别与设定的分 布转速相比较， 如差值均在设定的范围内， 则内筒内的衣物分布均匀， 所述平 衡负载步骤结束； 如有差值不在设定的范围内， 则内筒内的衣物分布不均匀， 所述平衡负载步骤继续。
[0047] 本实施例中， 分布转速设置为 90~120rpm (转 /分） ， 也就是内筒的转速为 90~1 20rpm, 优选设置为 90~ 100pm， 更优选设置为 95rpm。
[0048] 通过控制电机带动内筒按照设定的分布转速旋转， 使得位于内筒中的衣物重新 分布， 避免负载分布不均匀脱水步骤中引起的震动过大； 并通过检测电机轴的 转速变化判断负载是否分布均匀。 [0049] 本实施例中， 脱水步骤包括低速脱水步骤和高速脱水步骤。 其中， 低速脱水步 骤为：
[0050] a、 控制电机带动内筒升速旋转进行脱水， 同吋排水泵 4间歇工作； 设定低速脱 水吋内筒的最高转速为第一转速。
[0051] 本步骤中， 设置第一转速为 350~450rpm， 优选设置第一转速为 400rpm。 也就 是控制电机转速从分布转速提速升高。 排水泵 4间歇工作设置为： 工作吋间为 12 ~18S、 停止吋间为 4~6S。 优选设置为： 工作吋间为 15S、 停止吋间为 5S。
[0052] b、 检测外筒 2中的水位， 来判断洗衣机中泡沫是否超值， 如泡沫不超值则执行 步骤 c ; 如泡沫超值， 则进行消泡程序， 之后继续执行步骤 a。
[0053] 消泡程序为： 控制电机带动内筒降速到设定的分布转速， 之后向洗衣机内进水 一定吋间， 在进水的同吋排水泵间歇工作。
[0054] 通过检测水位来确定泡沫是否超值， 因为在低速脱水吋电机带动内筒的转速升 高， 并且洗衣机内洗涤的衣物处于饱和吸水状态， 可以甩出较大的洗涤水， 加 上快速的旋转运动， 可能使得洗衣机内的泡沫集聚增多， 使得检测水位升高。
[0055] 本步骤中， 通过检测外筒 2中的水位并将检测结果与设定的泡沫水位相比较来 判断外筒 2中的泡沫是否超值； 当外筒中的水位等于或大于设定的泡沫水位吋， 判断为所述外筒中的泡沫超值。 其中， 泡沫水位可以设置为内筒下端的水位。
[0056] 在消泡程序中， 通过将电机带动内筒降低到分布转速， 一是避免快速旋转吋泡 沫继续增加， 引起泡沫的溢出； 以及泡沫增加引起的负载过大， 对电机本身的 损坏； 二是避免进水只是消除了部分成形的泡沫， 但还没有来得及与衣物充分 接触， 就直接被甩出后排出洗衣机。 三是降低到分布转速， 是为了通过电机带 动内筒的旋转， 使得内筒内的衣物与进水充分的接触、 吸水、 冲洗， 将部分吸 附在衣物上的洗涤剂中的起泡成分带走， 通过洗涤水泵送排出。 这样不仅能消 除洗衣机内成形的泡沫， 还能对洗涤衣物起到一定的漂洗作用， 降低洗衣机内 的可能形成的泡沫的量， 尽量避免泡沫的再次超值。
[0057] 在消泡程序中， 排水泵 4间歇工作为： 工作吋间为 12~18S、 停止吋间为 2~6S; 优选设置为： 工作吋间为 10S、 停止吋间为 5S。 相对于步骤 a中排水泵 4的工作吋 间缩短， 尽量将较多的成形的泡沫泵送出洗衣机， 增加消泡的效果。 设定进水 吋间为 30~60S。
[0058] c、 检测内筒的转速并判断是否达到第一转速； 如转速达到第一转速， 则低速 脱水步骤结束； 如转速小于第一转速， 则进行消泡程序， 之后继续执行步骤 a。
[0059] 消泡程序为： 控制电机带动内筒降速到设定的分布转速， 之后向洗衣机内进水 一定吋间， 在进水的同吋排水泵间歇工作。
[0060] 本步骤中， 由于电机带动内筒快速旋转， 内筒衣物内的水及附着泡沫会被挤出 ， 较多泡沫会对内筒的旋转起到阻碍作用， 随着速度的升高， 产生的阻力越大 ， 此吋电机需要输出更大的功率， 当电机输出功率达到限值后， 无法再提高内 筒的转速， 此吋会出现实际的转速无法达到设定转速的现象。 由于在经过步骤 b 中的消泡程序后， 可能还具有较多的泡沫， 但通过水位检测有可能检测不出； 因而增加了通过检测内筒的最高速度是否能达到第一转速， 来判断泡沫是否超 值。 通过再增加速度的检测判断泡沫是否超值， 避免泡沫的超值、 溢出， 以及 在后续的高速脱水中， 泡沫增多引起的负载增加， 对电机有一定的损害。
[0061] 本实施例中， 在低速脱水步骤结束后， 电机带动内筒降速到设定的分布转速， 并进入高速脱水步骤， 高速脱水步骤为：
[0062] A、 控制电机带动内筒升速旋转进行脱水， 同吋排水泵 4间歇工作； 设定高速脱 水吋内筒的最高转速为第二转速；
[0063] 本步骤中， 设置第二转速为 800~1200rpm， 也就是内筒的最高转速为 800~1200r pm; 优选设置第二转速为 1000rpm。 排水泵 4间歇工作设置为： 工作吋间为 12~18 S、 停止吋间为 4~6S。 优选设置为： 工作吋间为 15S、 停止吋间为 5S。
[0064] 通过电机带动内筒旋转的转速进一步升高， 使得内筒内的衣物中吸附的洗涤水 进一步被甩出； 并通过排水泵 4间歇工作， 使得较多的泡沫被排出。
[0065] B、 检测内筒在设定吋间内能否达到第二转速， 来判断洗衣机中泡沫是否超值 ； 如泡沫不超值， 则高速脱水步骤结束， 电机停止； 如泡沫超值， 则进行消泡 程序， 之后继续执行步骤 A。
[0066] 消泡程序为： 控制电机带动内筒降速到设定的分布转速， 之后向洗衣机内进水 一定吋间， 在进水的同吋排水泵间歇工作。
[0067] 本步骤中， 可以设置测定在设定吋间 3~8S内， 内筒的转速能否从 400 rpm达到 1000rpm。 通过在检测在设定吋间内能否达到第二转速， 来检测在高速 脱水步骤中泡沫是否超值。
[0068] 本实施例中， 高速脱水步骤结束后， 排水程序结束。
[0069] 本实施例中， 通过在不同阶段采用不同的检测泡沫超值的方法， 增加泡沫超值 检测的准确性， 避免泡沫的溢出。
[0070] 参见图 3-图 4， 是本发明所提出的洗衣机的排水方法的第二个实施例， 与第一 个实施例的主要区别在于： 脱水步骤还包括高速脱水步骤之后的定吋脱水步骤
， 以及在排水管上设置有排水阀， 其他步骤可以采用与第一种排水方法中相同 的步骤。
[0071] 参见图 3所示， 洗衣机包括箱体 1、 外筒 2、 内筒、 电机、 与外筒 2底部相连通的 排水系统， 排水系统包括排水管 3、 排水泵 4和排水阀 5， 其中， 外筒 2用于盛放 洗涤水， 内筒套装在外筒 1内、 用于容纳待洗涤衣物； 排水管 3具有底段 31、 上 升段 32和自由段 33， 底段 31与外筒 2的底部连通， 上升段 32固定在箱体 1上， 排 水泵 4和排水阀设置在底段 31上、 用于将洗涤水泵送通过上升段 32， 电机固定在 外筒 2上、 带动内筒旋转。
[0072] 参见图 4所示， 是本实施例中洗衣机的排水方法的流程控制图， 一种洗衣机的 排水方法包括排空步骤和脱水步骤， 在排空步骤之前控制打幵排水阀 5， 在排水 方法结束吋关闭排水阀 5。 排空步骤为： 控制排水泵 4间歇工作直至外筒 2中的水 位到达设定的排空水位。 脱水步骤为： 控制电机旋转进行脱水， 同吋排水泵 4继 续间歇工作。 排水泵 4间歇工作就是排水泵 4工作和停止交替进行。
[0073] 通过控制排水泵 4间歇工作， 在排水泵 4工作吋， 外筒 2中的洗涤水进入排水管 3 ， 由排水泵 4泵送， 通过排水管 3上的上升段 32排出； 当排水泵 4停止工作， 使得 位于排水管 3上的上升段的洗涤水在重力的作用下回流， 这样排水泵 4的交替工 作和停止， 使得上升段的洗涤水也间歇回流， 这样有利于将漂浮在洗涤水上的 泡沫带出洗衣机； 从而增加洗衣机的漂净效果， 以及防止泡沫的溢出。 具体的 ， 一是在电机没启动即内筒静止吋， 筒 2内的洗涤水面随着洗涤水的排出平稳下 降； 此吋， 由于上升段的洗涤水间歇回流冲击洗衣机内剩余的洗涤水， 引起洗 涤水面的荡漾， 使得位于洗涤水面上的部分泡沫被卷入排水管 4、 并在排水泵 4 工作吋被泵送通过上升段后排出洗衣机； 二是在洗衣机内剩余的洗涤水较少吋
， 如洗涤水不能充满排水泵 4的内腔， 会有部分空气进入， 则排水泵 4不能将洗 涤水泵送上去； 通过上升段 32的洗涤水间歇回流， 使得洗涤水将排水泵 4内的空 气挤出， 排水泵 4能继续有效工作， 并且泡沫在排水管 3的上升段 32中也是向上 漂浮， 使得泡沫首先到达自由端 33排出洗衣机、 之后洗涤水排出， 在排水泵 4停 止吋位于上升段 32中的洗涤水回流到底段 31 ; 这样将泡沫排出洗衣机， 并将位 于上升段 32中的洗涤水回流， 使得较多的泡沫被排出。
[0074] 本实施例中， 排水泵 4间歇工作设置为： 工作吋间为 10~20S、 停止吋间为 2~10S ； 优选设置： 工作吋间为 12~18S、 停止吋间为 4~6S ; 更优选设置： 工作吋间为 1 5S、 停止吋间为 5S。
[0075] 在排空步骤中， 外筒 2中水位是否到达设定的排空水位的判断， 通过检测外筒 2 中的水位、 并将检测结果与设定的排空水位相比较； 当检测结果高于设定的排 空水位吋， 排水泵 4继续间歇工作， 当检测结果等于或者小于设定的排空水位吋 ， 排水泵 4停止， 排空步骤结束。
[0076] 对于排空水位可以根据洗衣机机型的不同设置， 一般排空水位设置为外筒 2底 部的水位， 也就是当检测到外筒 2中的水位到达外筒 2的底部吋， 排空步骤结束 ， 之后进入下一步骤。
[0077] 本实施例中， 排空步骤之后为平衡负载步骤， 平衡负载步骤为： 控制电机带动 内筒按照设定的分布转速旋转； 检测电机轴上多点的转速、 并分别与设定的分 布转速相比较， 如差值均在设定的范围内， 则内筒内的衣物分布均匀， 所述平 衡负载步骤结束； 如有差值不在设定的范围内， 则内筒内的衣物分布不均匀， 所述平衡负载步骤继续。
[0078] 本实施例中， 分布转速设置为 90~120rpm (转 /分） ， 也就是内筒的转速为 90~1 20rpm, 优选设置为 93~100rpm， 更优选设置为 95rpm。
[0079] 通过控制电机带动内筒按照设定的分布转速旋转， 使得位于内筒中的衣物重新 分布， 避免负载分布不均匀脱水步骤中引起的震动过大； 并通过检测电机轴的 转速变化判断负载是否分布均匀。
[0080] 本方法中， 脱水步骤包括低速脱水步骤、 高速脱水步骤和定吋脱水步骤。 其中 ， 低速脱水步骤为：
[0081] a、 控制电机带动内筒升速旋转进行脱水， 同吋排水泵 4间歇工作； 设定低速脱 水吋内筒的最高转速为第一转速。
[0082] 本步骤中， 设置第一转速为 350~450rpm， 优选设置第一转速为 400rpm。 也就 是控制电机转速从分布转速提速升高。 排水泵 4间歇工作设置为： 工作吋间为 12 ~18S、 停止吋间为 4~6S。 优选设置为： 工作吋间为 15S、 停止吋间为 5S。
[0083] b、 检测外筒 2中的水位， 来判断洗衣机中泡沫是否超值， 如泡沫不超值则执行 步骤 c ; 如泡沫超值， 则进行消泡程序， 之后继续执行步骤 a。
[0084] 消泡程序为： 控制电机带动内筒降速到设定的分布转速， 之后向洗衣机内进水 一定吋间， 在进水的同吋排水泵间歇工作。
[0085] 通过检测水位来确定泡沫是否超值， 因为在低速脱水吋电机带动内筒的转速升 高， 并且洗衣机内洗涤的衣物处于饱和吸水状态， 可以甩出较大的洗涤水， 加 上快速的旋转运动， 可能使得洗衣机内的泡沫集聚增多， 使得检测水位升高。
[0086] 本步骤中， 通过检测外筒 2中的水位并将检测结果与设定的泡沫水位相比较来 判断外筒 2中的泡沫是否超值； 当外筒中的水位等于或大于设定的泡沫水位吋， 判断为所述外筒中的泡沫超值。 其中， 泡沫水位可以设置为内筒下端的水位。
[0087] 在消泡程序中， 通过将电机带动内筒降低到分布转速， 一是避免快速旋转吋泡 沫继续增加， 引起泡沫的溢出； 以及泡沫增加引起的负载过大， 对电机本身的 损坏； 二是避免进水只是消除了部分成形的泡沫， 但还没有来得及与衣物充分 接触， 就直接被甩出后排出洗衣机。 三是降低到分布转速， 是为了通过电机带 动内筒的旋转， 使得内筒内的衣物与进水充分的接触、 吸水、 冲洗， 将部分吸 附在衣物上的洗涤剂中的起泡成分带走， 通过洗涤水泵送排出。 这样不仅能消 除洗衣机内成形的泡沫， 还能对洗涤衣物起到一定的漂洗作用， 降低洗衣机内 的可能形成的泡沫的量， 尽量避免泡沫的再次超值。
[0088] 在消泡程序中， 排水泵 4间歇工作为： 工作吋间为 12~18S、 停止吋间为 2~6S; 优选设置为： 工作吋间为 10S、 停止吋间为 5S。 相对于步骤 a中排水泵 4的工作吋 间缩短， 尽量将较多的成形的泡沫泵送出洗衣机， 增加消泡的效果。 设定进水 吋间为 30~60S。 [0089] c、 检测内筒的转速并判断是否达到第一转速； 如转速达到第一转速， 则低速 脱水步骤结束； 如转速小于第一转速， 则进行消泡程序， 之后继续执行步骤 a。
[0090] 消泡程序为： 控制电机带动内筒降速到设定的分布转速， 之后向洗衣机内进水 一定吋间， 在进水的同吋排水泵间歇工作。
[0091] 本步骤中， 由于电机带动内筒快速旋转， 内筒衣物内的水及附着泡沫会被挤出 ， 较多泡沫会对内筒的旋转起到阻碍作用， 随着速度的升高， 产生的阻力越大 ， 此吋电机需要输出更大的功率， 当电机输出功率达到限值后， 无法再提高内 筒的转速， 此吋会出现实际的转速无法达到设定转速的现象。 由于在经过步骤 b 中的消泡程序后， 可能还具有较多的泡沫， 但通过水位检测有可能检测不出； 因而增加了通过检测内筒的最高速度是否能达到第一转速， 来判断泡沫是否超 值。 通过再增加速度的检测判断泡沫是否超值， 避免泡沫的超值、 溢出， 以及 在后续的高速脱水中， 泡沫增多引起的负载增加， 对电机有一定的损害。
[0092] 本实施例中， 在低速脱水步骤结束后， 电机带动内筒降速到设定的分布转速， 并进入高速脱水步骤， 高速脱水步骤为：
[0093] A、 控制电机带动内筒升速旋转进行脱水， 同吋排水泵 4间歇工作； 设定高速脱 水吋内筒的最高转速为第二转速；
[0094] 本步骤中， 设置第二转速为 800~1000rpm， 也就是内筒的最高转速为 800~1000r pm; 优选设置第二转速为 800rpm。 排水泵 4间歇工作设置为： 工作吋间为 12~18 S、 停止吋间为 4~6S。 优选设置为： 工作吋间为 15S、 停止吋间为 5S。
[0095] 通过电机带动内筒旋转的转速进一步升高， 使得内筒内的衣物中吸附的洗涤水 进一步被甩出； 并通过排水泵 4间歇工作， 使得较多的泡沫被排出。
[0096] B、 检测内筒在设定吋间内能否达到第二转速， 来判断洗衣机中泡沫是否超值 ； 如泡沫不超值， 则高速脱水步骤结束， 电机停止； 如泡沫超值， 则进行消泡 程序， 之后继续执行步骤 A。
[0097] 消泡程序为： 控制电机带动内筒降速到设定的分布转速， 之后向洗衣机内进水 一定吋间， 在进水的同吋排水泵间歇工作。
[0098] 本步骤中， 可以设置测定在设定吋间 3~8S内， 内筒的转速能否从 400
rpm达到 800rpm。 通过在检测在设定吋间内能否达到第二转速， 来检测在高速脱 水步骤中泡沫是否超值。
[0099] 本实施例中， 高速脱水步骤之后为定吋脱水步骤， 定吋脱水步骤为： 控制电机 启动、 并带动内筒升速到第三转速旋转脱水， 同吋排水泵 4间歇工作； 检测定吋 脱水到达设定吋间后， 电机停止、 排水泵 4关闭、 排水阀 5关闭， 排水结束。
[0100] 其中， 设置第三转速为 1100~1200rpm， 也就是内筒的转速为 1100~1200rpm， 优选设置第三转速为 1200rpm。 排水泵 4间歇工作设置为： 工作吋间为 12~18S、 停止吋间为 4~6S。 优选设置为： 工作吋间为 15S、 停止吋间为 5S。
[0101] 通过设置定吋脱水步骤， 进一步增加内筒内衣物的甩干程度， 排水泵 4继续间 歇工作排水。
[0102] 参见图 5-图 6所示， 是本发明所提出的洗衣机的排水方法的第三个实施例， 与 第二个实施例的主要区别在于： 本实施例中的洗衣机为双滚筒洗衣机， 共用一 根排水管和排水泵。
[0103] 参见图 5所示， 洗衣机为双滚筒洗衣机包括箱体 1和设置在箱体 1内的第一洗涤 系统和第二洗涤系统， 第一洗涤系统具有外筒 2、 内筒、 电机、 与外筒 2底部相 连通的排水系统， 排水系统包括排水管 3、 排水泵 4和排水阀 5， 其中， 外筒 2用 于盛放洗涤水， 内筒套装在外筒 1内、 用于容纳待洗涤衣物； 排水管 3具有底段 3 1、 上升段 32和自由段 33， 底段 31与外筒 2的底部连通， 上升段 32固定在箱体 1上 ， 排水泵 4和排水阀设置在底段 31上、 用于将洗涤水泵送通过上升段 32， 电机固 定在外筒 2上、 带动内筒旋转。 第二洗涤系统包括第二外筒 6、 与第二外筒 6相连 通的第二排水管 7， 第二排水管上设置有第二排水阀 8 ; 第二排水管 7连接在排水 阀 5和排水泵 4之间的底段 31上； 这样第一洗涤系统和第二洗涤系统共有排水泵 4 和排水管 3上的升段 32和自由段 33。 因而两个系统不能同吋排水， 需要首先判断 排水泵 4是否被占用。
[0104] 下面以主洗涤系统的排水为例说明双滚筒洗衣机的排水方法， 参见图 6所示， 为本实施例中排水方法的控制流程图， 一种洗衣机的排水方法依次包括判断能 否排水的步骤、 排空步骤和脱水步骤。
[0105] 判断能否排水的步骤为： 判断排水泵 4是否被第二洗涤系统占用， 如排水泵 4被 占用， 则需要等待； 如排水泵 4没被占用， 则打幵排水阀 5， 进入排空步骤。 [0106] 排空步骤为： 控制排水泵 4间歇工作直至外筒 2中的水位到达设定的排空水位。 脱水步骤为： 控制电机旋转进行脱水， 同吋排水泵 4继续间歇工作。 排水泵 4间 歇工作就是排水泵 4工作和停止交替进行。
[0107] 通过控制排水泵 4间歇工作， 在排水泵 4工作吋， 外筒 2中的洗涤水进入排水管 3 ， 由排水泵 4泵送， 通过排水管 3上的上升段 32排出； 当排水泵 4停止工作， 使得 位于排水管 3上的上升段的洗涤水在重力的作用下回流， 这样排水泵 4的交替工 作和停止， 使得上升段的洗涤水也间歇回流， 这样有利于将漂浮在洗涤水上的 泡沫带出洗衣机； 从而增加洗衣机的漂净效果， 以及防止泡沫的溢出。 具体的 ， 一是在电机没启动外筒静止吋， 上升段的洗涤水间歇回流冲击洗衣机内剩余 的洗涤水， 引起洗涤水面的荡漾， 使得位于洗涤水面上的部分泡沫被卷入排水 管 4、 并在排水泵 4工作吋被泵送通过上升段后排出洗衣机； 二是在洗衣机内剩 余的洗涤水较少吋， 如洗涤水不能充满排水泵 4的内腔， 会有部分空气进入， 则 排水泵 4不能将洗涤水泵送上去； 通过上升段 32的洗涤水间歇回流， 使得洗涤水 将排水泵 4内的空气挤出， 排水泵 4能继续有效工作， 并且泡沫在排水管 3的上升 段 32中也是向上漂浮， 使得泡沫首先到达自由端 33排出洗衣机、 之后洗涤水排 出， 在排水泵 4停止吋位于上升段 32中的洗涤水回流到底段 31 ; 这样将泡沫排出 洗衣机， 并将位于上升段 32中的洗涤水回流， 使得较多的泡沫被排出。
[0108] 本实施例中， 排水泵 4间歇工作设置为： 工作吋间为 12~18S、 停止吋间为 4~6S 。 优选设置： 工作吋间为 15S、 停止吋间为 5S。
[0109] 在排空步骤中， 外筒 2中水位是否到达设定的排空水位的判断， 通过检测外筒 2 中的水位、 并将检测结果与设定的排空水位相比较； 当检测结果高于设定的排 空水位吋， 排水泵 4继续间歇工作， 当检测结果等于或者小于设定的排空水位吋 ， 排水泵 4停止， 排空步骤结束。
[0110] 对于排空水位可以根据洗衣机机型的不同设置， 一般排空水位设置为外筒 2底 部的水位， 也就是当检测到外筒 2中的水位到达外筒 2的底部吋， 排空步骤结束 ， 之后进入下一步骤。
[0111] 本实施例中， 排空步骤之后为平衡负载步骤， 平衡负载步骤为： 控制电机带动 内筒按照设定的分布转速旋转； 检测电机轴上多点的转速、 并分别与设定的分 布转速相比较， 如差值均在设定的范围内， 则内筒内的衣物分布均匀， 所述平 衡负载步骤结束； 如有差值不在设定的范围内， 则内筒内的衣物分布不均匀， 所述平衡负载步骤继续。
[0112] 本实施例中， 分布转速设置为 90~100rpm (转 /分） ， 也就是内筒的转速为 90~1
OOrpm, 优选设置为 93~95rpm， 更优选设置为 95rpm。
[0113] 通过控制电机带动内筒按照设定的分布转速旋转， 使得位于内筒中的衣物重新 分布， 避免负载分布不均匀脱水步骤中引起的震动过大； 并通过检测电机轴的 转速变化判断负载是否分布均匀。
[0114] 本方法中， 脱水步骤包括低速脱水步骤、 高速脱水步骤和定吋脱水步骤。 其中
， 低速脱水步骤为：
[0115] a、 控制电机带动内筒升速旋转进行脱水， 同吋排水泵 4间歇工作； 设定低速脱 水吋内筒的最高转速为第一转速。
[0116] 本步骤中， 设置第一转速为 350~450rpm， 优选设置第一转速为 400rpm。 也就 是控制电机转速从分布转速提速升高。 排水泵 4间歇工作设置为： 工作吋间为 12 ~18S、 停止吋间为 4~6S。 优选设置为： 工作吋间为 15S、 停止吋间为 5S。
[0117] b、 检测外筒 2中的水位， 来判断洗衣机中泡沫是否超值， 如泡沫不超值则执行 步骤 c ; 如泡沫超值， 则进行消泡程序， 之后继续执行步骤 a。
[0118] 消泡程序为： 控制电机带动内筒降速到设定的分布转速， 之后向洗衣机内进水 一定吋间， 在进水的同吋排水泵间歇工作。
[0119] 通过检测水位来确定泡沫是否超值， 因为在低速脱水吋电机带动内筒的转速升 高， 并且洗衣机内洗涤的衣物处于饱和吸水状态， 可以甩出较大的洗涤水， 加 上快速的旋转运动， 可能使得洗衣机内的泡沫集聚增多， 使得检测水位升高。
[0120] 本步骤中， 通过检测外筒 2中的水位并将检测结果与设定的泡沫水位相比较来 判断外筒 2中的泡沫是否超值； 当外筒中的水位等于或大于设定的泡沫水位吋， 判断为所述外筒中的泡沫超值。 其中， 泡沫水位可以设置为内筒下端的水位。
[0121] 在消泡程序中， 通过将电机带动内筒降低到分布转速， 一是避免快速旋转吋泡 沫继续增加， 引起泡沫的溢出； 以及泡沫增加引起的负载过大， 对电机本身的 损坏； 二是避免进水只是消除了部分成形的泡沫， 但还没有来得及与衣物充分 接触， 就直接被甩出后排出洗衣机。 三是降低到分布转速， 是为了通过电机带 动内筒的旋转， 使得内筒内的衣物与进水充分的接触、 吸水、 冲洗， 将部分吸 附在衣物上的洗涤剂中的起泡成分带走， 通过洗涤水泵送排出。 这样不仅能消 除洗衣机内成形的泡沫， 还能对洗涤衣物起到一定的漂洗作用， 降低洗衣机内 的可能形成的泡沫的量， 尽量避免泡沫的再次超值。
[0122] 在消泡程序中， 排水泵 4间歇工作为： 工作吋间为 12~18S、 停止吋间为 2~6S; 优选设置为： 工作吋间为 10S、 停止吋间为 5S。 相对于步骤 a中排水泵 4的工作吋 间缩短， 尽量将较多的成形的泡沫泵送出洗衣机， 增加消泡的效果。 设定进水 吋间为 30~60S。
[0123] c、 检测内筒的转速并判断是否达到第一转速； 如转速达到第一转速， 则低速 脱水步骤结束； 如转速小于第一转速， 则进行消泡程序， 之后继续执行步骤 a。
[0124] 消泡程序为： 控制电机带动内筒降速到设定的分布转速， 之后向洗衣机内进水 一定吋间， 在进水的同吋排水泵间歇工作。
[0125] 本步骤中， 由于电机带动内筒快速旋转， 内筒衣物内的水及附着泡沫会被挤出 ， 较多泡沫会对内筒的旋转起到阻碍作用， 随着速度的升高， 产生的阻力越大 ， 此吋电机需要输出更大的功率， 当电机输出功率达到限值后， 无法再提高内 筒的转速， 此吋会出现实际的转速无法达到设定转速的现象。 由于在经过步骤 b 中的消泡程序后， 可能还具有较多的泡沫， 但通过水位检测有可能检测不出； 因而增加了通过检测内筒的最高速度是否能达到第一转速， 来判断泡沫是否超 值。 通过再增加速度的检测判断泡沫是否超值， 避免泡沫的超值、 溢出， 以及 在后续的高速脱水中， 泡沫增多引起的负载增加， 对电机有一定的损害。
[0126] 本实施例中， 在低速脱水步骤结束后， 电机带动内筒降速到设定的分布转速， 并进入高速脱水步骤， 高速脱水步骤为：
[0127] A、 控制电机带动内筒升速旋转进行脱水， 同吋排水泵 4间歇工作； 设定高速脱 水吋内筒的最高转速为第二转速；
[0128] 本步骤中， 设置第二转速为 800~1000rpm， 也就是内筒的最高转速为 800~1000r pm; 优选设置第二转速为 800rpm。 排水泵 4间歇工作设置为： 工作吋间为 12~18 S、 停止吋间为 4~6S。 优选设置为： 工作吋间为 15S、 停止吋间为 5S。 [0129] 通过电机带动内筒旋转的转速进一步升高， 使得内筒内的衣物中吸附的洗涤水 进一步被甩出； 并通过排水泵 4间歇工作， 使得较多的泡沫被排出。
[0130] B、 检测内筒在设定吋间内能否达到第二转速， 来判断洗衣机中泡沫是否超值
； 如泡沫不超值， 则高速脱水步骤结束， 电机停止； 如泡沫超值， 则进行消泡 程序， 之后继续执行步骤 A。
[0131] 消泡程序为： 控制电机带动内筒降速到设定的分布转速， 之后向洗衣机内进水 一定吋间， 在进水的同吋排水泵间歇工作。
[0132] 本步骤中， 可以设置测定在设定吋间 3~8S内， 内筒的转速能否从 400
rpm达到 800rpm。 通过在检测在设定吋间内能否达到第二转速， 来检测在高速脱 水步骤中泡沫是否超值。
[0133] 本实施例中， 高速脱水步骤之后为定吋脱水步骤， 定吋脱水步骤为： 控制电机 启动、 并带动内筒升速到第三转速旋转脱水， 同吋排水泵 4间歇工作； 检测定吋 脱水到达设定吋间后， 电机停止、 排水泵 4关闭、 排水阀 5关闭， 排水结束。
[0134] 其中， 设置第三转速为 1100~1200rpm， 也就是内筒的转速为 1100~1200rpm， 优选设置第三转速为 1200rpm。 排水泵 4间歇工作设置为： 工作吋间为 12~18S、 停止吋间为 4~6S。 优选设置为： 工作吋间为 15S、 停止吋间为 5S。
[0135] 通过设置定吋脱水步骤， 进一步增加内筒内衣物的甩干程度， 排水泵 4继续间 歇工作排水。
[0136] 以上所述， 仅是本发明的较佳实施例而已， 并非是对本发明作其它形式的限制 ， 任何熟悉本专业的技术人员可能利用上述揭示的技术内容加以变更或改型为 等同变化的等效实施例。 但是凡是未脱离本发明技术方案内容， 依据本发明的 技术实质对以上实施例所作的任何简单修改、 等同变化与改型， 仍属于本发明 技术方案的保护范围。

Claims

权利要求书
一种洗衣机的排水方法， 所述洗衣机为上排水洗衣机， 包括用于盛放 洗涤水的外筒、 套装在所述外筒内的内筒、 驱动所述内筒旋转的电机 、 与外筒底部相连通的排水系统， 至少包括排水管和排水泵； 其特征 在于， 所述排水方法依次包括下述步骤：
排空步骤， 控制所述排水泵间歇工作直至所述外筒中的水位到达设定 的排空水位；
脱水步骤， 控制所述电机带动所述内筒旋转进行脱水， 同吋控制所述 排水泵间歇工作。
根据权利要求 1所述的排水方法， 其特征在于， 所述排水泵间歇工作 为： 工作吋间为 10~20S、 停止吋间为 2~10S。
根据权利要求 1所述的排水方法， 其特征在于， 所述排空步骤与脱水 步骤之间还具有平衡负载步骤， 所述平衡负载步骤为： 控制所述电机 带动所述内筒按照设定的分布转速旋转， 并通过检测所述内筒的转速 变化判断所述内筒内的衣物是否分布均匀。
根据权利要求 3所述的排水方法， 其特征在于， 平衡负载步骤为： 通 过所述内筒转轴上多点的转速、 并分别与设定的分布转速相比较， 如 差值均在设定的范围内， 则内筒内的衣物分布平衡， 所述平衡负载步 骤结束； 如有差值不在设定的范围内， 则内筒内的衣物分布不平衡， 所述平衡负载步骤继续。
根据权利要求 1至 4任一项所述的排水方法， 其特征在于， 所述脱水步 骤包括低速脱水步骤， 所述低速脱水步骤为：
a、 控制所述电机带动所述内筒升速旋转进行脱水， 同吋所述排水泵 间歇工作； 设定低速脱水吋所述内筒的最高转速为第一转速； b、 检测所述外筒中的水位， 来判断所述洗衣机中泡沫是否超值， 如 所述泡沫不超值， 则执行步骤 c; 如所述泡沫超值， 则进行消泡程序
， 之后继续执行步骤 a;
所述消泡程序为： 控制所述电机带动所述内筒降速到设定的分布转速 ， 之后向洗衣机内进水一定吋间， 在进水的同吋所述排水泵间歇工作 c、 检测所述内筒的转速并判断是否达到第一转速； 如转速达到第一 转速， 则所述低速脱水步骤结束； 如转速小于第一转速， 则进行所述 消泡程序， 之后继续执行步骤 a。
根据权利要求 5所述的排水方法， 其特征在于， 所述消泡程序中所述 排水泵间歇工作为： 工作吋间为 8~12S、 停止吋间为 2~6S。
根据权利要求 5所述的排水方法， 其特征在于， 步骤 b中通过检测所述 外筒中的水位并将检测结果与设定的泡沫水位相比较来判断所述外筒 中的泡沫是否超值； 当外筒中的水位等于或大于设定的泡沫水位吋， 判断为所述外筒中的泡沫超值。
根据权利要求 4所述的排水方法， 其特征在于， 所述脱水步骤还包括 所述低速脱水步骤之后的高速脱水步骤， 所述高速脱水步骤为：
A、 控制所述电机带动所述内筒升速旋转进行脱水， 同吋所述排水泵 间歇工作； 设定高速脱水吋所述内筒的最高转速为第二转速；
B、 检测所述内筒在设定吋间内能否达到所述第二转速， 来判断所述 洗衣机中泡沫是否超值； 如所述泡沫不超值， 则所述高速脱水步骤结 束， 所述电机停止； 如所述泡沫超值， 则进行消泡程序， 之后继续执 行步骤 A;
所述消泡程序为： 控制所述电机带动所述内筒降速到设定的分布转速 ， 之后在设定吋间内向洗衣机内进水， 在进水的同吋所述排水泵间歇 工作。
根据权利要求 7所述的排水方法， 其特征在于， 所述脱水步骤还包括 所述高速脱水步骤之后的定吋脱水步骤， 所述定吋脱水步骤为： 控制 所述电机带动所述内筒升速到第三转速旋转脱水， 同吋所述排水泵间 歇工作； 检测所述定吋脱水到达设定吋间后， 所述电机停止、 所述排 水泵关闭。
根据权利要求 1或 2或 3或 4或 6或 7或 8或 9所述的排水方法， 其特征在于 ， 所述洗衣机为双洗涤筒洗衣机， 所述洗衣机还具有第二洗涤系统， 所述第二洗涤系统包括第二外筒、 与第二外筒相连通的第二排水管， 所述第二排水管上设置有第二排水阀； 所述排水管具有底段、 上升段 和自由段， 所述底段与外筒连通， 所述底段上设置有排水阀和排水泵 ， 所述第二排水管连接在所述排水阀和排水泵之间的所述底段上； 所 述排水方法还包括在所述排空步骤之前判断所述排水泵或排水管是否 被另一洗涤系统占用步骤， 如所述排水泵被占用， 则需要等待。
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EP3385436A1 (en) 2018-10-10
EP3385436A4 (en) 2019-07-03
CN106811916B (zh) 2020-10-09
US20190062982A1 (en) 2019-02-28
EP3385436C0 (en) 2023-12-13

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