CN101824729B - Control method of washing device - Google Patents
Control method of washing device Download PDFInfo
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- CN101824729B CN101824729B CN2010101614657A CN201010161465A CN101824729B CN 101824729 B CN101824729 B CN 101824729B CN 2010101614657 A CN2010101614657 A CN 2010101614657A CN 201010161465 A CN201010161465 A CN 201010161465A CN 101824729 B CN101824729 B CN 101824729B
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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
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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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/22—Condition of the washing liquid, e.g. turbidity
- D06F34/24—Liquid temperature
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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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/28—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
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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
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/02—Rotary receptacles, e.g. drums
- D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
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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
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
- D06F37/304—Arrangements or adaptations of electric motors
-
- 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
- D06F39/088—Liquid supply arrangements
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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
- D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2101/20—Operation modes, e.g. delicate laundry washing programs, service modes or refreshment cycles
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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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/16—Washing liquid temperature
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/52—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to electric heating means, e.g. temperature or voltage
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
The invention discloses a control method of a washing device, which comprises the following steps: selecting color clothes washing progress for washing the color clothes; supplying washing water to a washing barrel; performing the step motions, namely, enabling the drum to rotate to one direction by the speed preventing the washings from being separated from the internal circumstance surface of the drum, and enabling the drum to stop the rotating when the washings is positioned on the 180 DEG position on the rotating direction of the drum.
Description
Technical field
The present invention relates to be used for the control method of the car washing installation of color clothes washing.
Background technology
In general, car washing installation is a kind of device of removing the spot of pasting on the washings by the effect of water and washing agent.
Car washing installation can be divided into impeller-type, eddy current type and drum type washing apparatus of laundry substantially.
The impeller-type car washing installation passes through the agitators direction rotation to the left and right with the central protrusion of sink, thereby carries out washing operation.The eddy current type car washing installation passes through the rotation fin direction rotation to the left and right with the disk apperance of sink bottom formation, thereby utilizes the frictional force between current and the washings to carry out washing operation.The drum type washing apparatus of laundry is put into water, washing agent and washings in the inside of cylinder, and swing roller, thereby carries out washing operation.
In the drum type washing apparatus of laundry, in the inside of the housing that forms outward appearance the wash bucket that is used to hold washings is installed, be provided with the cylinder that is used to hold washings in the inboard of wash bucket, be provided with the motor and the axle that are used to rotate above-mentioned cylinder at the back side of wash bucket.
Have the frictional force that the drum type washing apparatus of laundry of structure as mentioned above utilizes the washings that stores in the washings that store in the wash bucket and the cylinder, and the chemical action of the washing agent that contains in the washings is removed the spot that contains in the washings.Therefore, the combination of the direction of rotation of cylinder and rotary speed will have close related with the laundry performance of car washing installation.In addition, in the control method of the car washing installation of prior art, under the situation of color clothing, the problem that problem and the dress material that exists to other washings dyeing sustained damage.
Summary of the invention
Goal of the invention: the object of the present invention is to provide a kind of control method of car washing installation, in the present invention, can prevent to give other washings, and can prevent that the color clothing from sustaining damage with the colors staining of washings.
Technical scheme: in order to achieve the above object, according to the control method of the car washing installation among the present invention, in car washing installation, comprise: the wash bucket that is used to store washings with lower member; Rotatablely be arranged at above-mentioned wash bucket, be used to store the cylinder of washings; Be used for detecting the temperature-detecting device of the water temperature of above-mentioned wash bucket washing water supplied; Be used to control the control device of car washing installation, may further comprise the steps in the control method of its car washing installation: the process selection step of selecting to be used to wash the color clothing clothes washing process of color clothing; Supply with the feedwater step of washings to above-mentioned wash bucket; Be provided with stepwise operation, promptly, make the step of above-mentioned cylinder repeatedly to prevent that speed that washings separates from the inner peripheral surface of cylinder is rotated to a direction, and the color clothes washing step that when washings is positioned at 180 degree positions on the direction of rotation of cylinder, makes the step that above-mentioned cylinder stops to be rotated.
Beneficial effect: the control method of the car washing installation in according to the present invention can prevent to give other washings with the colors staining of washings, and can prevent that the color clothing from sustaining damage.
Description of drawings
Fig. 1 is the stereogram of car washing installation;
Fig. 2 is the schematic diagram that illustrates the cylinder action of the control method that is applicable to the car washing installation among the present invention;
Fig. 3 is the detailed maps of stepwise operation;
Fig. 4 is a detailed maps of cleaning action;
Fig. 5 is the washing force of relatively each action and the chart of level of vibration;
Fig. 6 is the flow chart of control method of the car washing installation of the embodiment in according to the present invention;
Fig. 7 is the flow chart of control method of the car washing installation of another embodiment in according to the present invention.
The specific embodiment
Below, with reference to the accompanying drawings, the preferred embodiment among the present invention is described in detail.
Under the situation of not having special definition, all technical termses in this specification are equal to the general sense of the relative terms of common technical staff's understanding in the technical field of the invention, when if the term that uses in this specification and the general sense of relative terms clash, should be according to the definition of using in this specification.
In addition, below the structure of the device that will illustrate or control method are intended to illustrate the embodiment among the present invention, rather than are used to limit interest field of the present invention, and the identical reference marks of using in whole specification is represented identical structural element.
Fig. 1 is the stereogram applicable to the car washing installation of the embodiment among the present invention.
Comprise in the car washing installation with lower member: the housing 110 that forms outward appearance; Be arranged at the inside of above-mentioned housing, and by the wash bucket 120 of above-mentioned housings support; The rotatable inside that is arranged at above-mentioned wash bucket is used to throw in the cylinder 130 of washings; Apply moment of torsion to above-mentioned cylinder, the motor 140 that cylinder is rotated; Make the do washing control panel 115 of selection and execution of stroke of user.
Comprise with lower member in the above-mentioned housing 110: body 111; Be arranged at the front of above-mentioned body and the lid 112 of combination; Be incorporated into the top panel 116 of above-mentioned upper part of body.Wherein, can comprise with lower member in the above-mentioned lid 112: the peristome 114 that is used to throw in/take out washings; Be used for the optionally door 113 of open above-mentioned peristome.
Above-mentioned cylinder 130 is formed for washing the space of the inner washings of throwing in, and above-mentioned cylinder 130 is provided to power and is rotated from above-mentioned motor 140.Owing to be provided with a plurality of through holes 131 in the above-mentioned cylinder 130, the washings that store in the above-mentioned wash bucket 120 can flow into the inside of above-mentioned cylinder 130 by above-mentioned through hole 131, and, the washings of above-mentioned cylinder inside can flow out to above-mentioned wash bucket, therefore, when above-mentioned cylinder is rotated, the inner washings of throwing in of above-mentioned cylinder will with above-mentioned wash bucket in the washings that store take place to remove spot in the process of friction.
Above-mentioned control panel 115 is for user's input information relevant with washing operation, and can confirm the structure of the information relevant with washing operation, that is, above-mentioned control panel 115 is to be used for carrying out the structure that interface (interface) is connected with the user.
Therefore, comprise with lower member in the above-mentioned control panel 115: for the operating portion 117,118 of user's input control order; Show display part 119 with above-mentioned control instruction control information corresponding.In addition, control part (not shown) can be comprised in the above-mentioned control panel, the driving of the car washing installation of the operation that comprises above-mentioned motor will be controlled according to above-mentioned control instruction.
The control method of the car washing installation in according to the present invention, cylinder can drive by variform,, except general upset driving and spin (spin) driving, also will carry out drum driven with more various form that is.Wherein, it is when the washing of general roller washing machine or cleaning operation that above-mentioned upset drives, and makes its drum driven that drops action after lifting washings.And it is when carrying out dehydrating operations that above-mentioned spin drives, the drum driven action that washings is proceeded to rotate with the state of being close to cylinder inside.
Drum driven action among the present invention refers to, and except the RPM of cylinder rotation, associated washings is in the action of cylinder internal flow.Therefore, will provide the rotation of the cylinder that drives with the action of various drum driven among the present invention, particularly make the control method of the motor that cylinder is rotated.
Below, will the multiple drum driven action applicable to the embodiment among the present invention be described in detail.
Fig. 2 is the schematic diagram of multiple drum driven action that is applicable to the control method of car washing installation of the present invention.
The drum driven action refers to the combination of the direction of rotation and the rotary speed of above-mentioned cylinder.According to the action of above-mentioned different drum driven, be positioned at the washings of cylinder inside the direction that drops, the time point that drops will be different, thereby the mobile of washings of cylinder inside changed, above-mentioned drum driven action will realize by controlling above-mentioned motor.
When above-mentioned cylinder was rotated, washings will be promoted by the lifting device (lifter) 135 of the inner peripheral surface that is arranged at cylinder, by rotary speed and the direction of rotation of controlling above-mentioned cylinder, can make the impact that puts on washings different respectively.That is, can make the friction between friction, washings and the washings between the washings, and the mechanicals efforts such as fall impacting of washings are different respectively.That is to say, can make the degree of beating or washing by rubbing with the hands washings for washing operation different respectively, and make the dispersion or the upset degree difference difference of washings.
Thus, the control method of the car washing installation that is provided with multiple drum driven action will be provided among the present invention, to take different drum driven actions according to contaminated degree, each stroke of the kind of washings, washings, the refinement step that constitutes each stroke, thereby can best mechanicals efforts handle washings, thus, can improve the detersive efficiency of washings.In addition, can prevent to cause consuming the situation of too much wash time, thereby can shorten the time that is consumed because of adopting consistent drum driven to move.
In addition, in order to realize above-mentioned multiple drum driven action, above-mentioned motor 140 is the direct type motor preferably.That is, the stator that preferably constitutes motor is fixed in the rear of wash bucket 120, and the rotor of motor is rotated, and directly drives the form of above-mentioned cylinder 130.This be because, direction of rotation, moment of torsion etc. by the control motor can farthest prevent temporal delay or backlash (backlash), thus index drum drive actions at once.
In addition, send in the form of rotating shaft by pinion (pulley) etc. at revolving force motor, can adopt the drum driven action of the form that allows temporal delay or backlash, for example, can adopt upset to drive or the driving etc. of spinning, therefore, do not advise adopting in order to realize multiple drum driven action.The type of drive form of motor and cylinder belongs to common practise for the technical staff of relevant industries, will save detailed explanation at this.
Fig. 2 (a) is the schematic diagram that illustrates scroll actions (rolling motion), above-mentioned scroll actions is to be controlled as, above-mentioned motor 140 makes cylinder 130 be rotated to a direction, and the washings of above-mentioned cylinder inner peripheral surface is about the action that position below 90 degree drops to the minimum point of cylinder from the direction of rotation of cylinder.
Promptly, when motor 140 makes cylinder be rotated to be about 40RPM, after the washings that is positioned at the minimum point of above-mentioned cylinder 130 both rises to take the altitude along the direction of rotation of cylinder 130, to be about position below 90 degree to direction of rotation from the minimum point of above-mentioned cylinder, as flowing to the minimum point of above-mentioned cylinder as rolling, when visually looking, will constitute at cylinder when clockwise direction rotates, washings is from the form of the third quadrant face progressive rolling movement of cylinder.
Washings is by above-mentioned scroll actions, and by and the friction of washings, the friction between the washings, and carry out washing operation with the friction of cylinder inner peripheral surface, and, by above-mentioned action the upset of washings will take place fully, thereby can obtain soft effect of washing washings by rubbing with the hands.
Wherein, cylinder RPM by with the relation decision of the radius of cylinder, promptly, when the RPM of cylinder becomes big, to produce centrifugal force in the washings in the cylinder, because the size of above-mentioned centrifugal force and gravity there are differences, flowing of the washings of cylinder inside will be different, certainly, need consider the revolving force of cylinder and the frictional force between cylinder and the washings simultaneously.
Therefore, in scroll actions, the RPM of decision cylinder is so that the centrifugal force and the frictional force that produce are less than gravity (1G).
Fig. 2 (b) is the schematic diagram that illustrates rotary movement (tumbling motion).
Above-mentioned rotary movement is to be controlled as, and above-mentioned motor 140 makes cylinder 130 be rotated to a direction, and the washings of above-mentioned cylinder inner peripheral surface is about 90 degree drop to the minimum point of cylinder to 110 degree positions action from the direction of rotation of cylinder.In above-mentioned rotary movement, only need index drum to be rotated to a direction and can produce mechanicals efforts with suitable RPM, it is the general drum driven action of using when washing and cleaning operation.
Promptly, before motor 140 drives, the washings of throwing in the cylinder 130 will be positioned at the minimum point of above-mentioned cylinder 130, when above-mentioned motor 140 when above-mentioned cylinder 130 provides moment of torsion, above-mentioned cylinder 130 will be rotated, the lifting device 135 that is arranged at the inner peripheral surface of above-mentioned cylinder moves to both take the altitudes with washings from the minimum point in the cylinder, when above-mentioned motor 140 makes above-mentioned cylinder 130 be rotated to be about the 46RPM degree, washings will be about 90 degree to the position of 110 degree to direction of rotation from the minimum point of above-mentioned cylinder and drop to the minimum point direction of cylinder.
In rotary movement, the RPM of decision cylinder so that the centrifugal force that produces during greater than scroll actions centrifugal force and less than gravity.
When visually looking, rotary movement will constitute at cylinder when clockwise direction rotates, after washings moves to the part of third quadrant face to the second quadrant face from the minimum point of cylinder, break away from and drop to the form of the minimum point of cylinder from the inner peripheral surface of cylinder.
Thus, in above-mentioned rotary movement, to make washings by carrying out washing operation with the friction of washings and the impulsive force that causes that drops, and the mechanicals efforts with greater than above-mentioned scroll actions the time carried out washing and cleaning operation, and, owing to be to break away from the inside of cylinder and the action of dropping to a certain degree, the effect that can obtain making the washings of mutual winding to separate and disperse washings.
Fig. 2 (c) is the schematic diagram that illustrates stepwise operation (step motion), above-mentioned stepwise operation is to be controlled as, above-mentioned motor 140 makes cylinder 130 be rotated to a direction, and the washings of above-mentioned cylinder inner peripheral surface peak (being about 180 degree positions) on the direction of rotation of cylinder drops to the action of the minimum point of cylinder.
When above-mentioned motor 140 made above-mentioned cylinder 130 be rotated more than the 60RPM to be about, washings can not have being rotated of dropping under action of centrifugal force.Above-mentioned stepwise operation be make above-mentioned cylinder with washings after preventing under the action of centrifugal force to be rotated from the speed that the cylinder inner peripheral surface drops, by the above-mentioned cylinder of brake hard, make the action of the impulsive force maximization that washings is subjected to.
In above-mentioned stepwise operation, be controlled as, above-mentioned motor 140 make above-mentioned cylinder with washings after the speed (being about more than the 60RPM) that prevents under the action of centrifugal force to drop from the inner peripheral surface of cylinder is rotated, be positioned at washings under near the situation the peak (direction of rotation 180 degree) of cylinder, will be to above-mentioned cylinder 130 supply moments of torsion.
Thus, after the direction of rotation of washings from the minimum point of above-mentioned cylinder 130 along cylinder promotes, the moment in that the torsional interaction bottom roll of motor 140 is stopped, will drop to minimum point from the peak of cylinder 130.Therefore, above-mentioned stepwise operation is that the impulsive force that causes in the process that drops with maximum drop of the washings by cylinder inside is carried out the action of washing operation, will be greater than aforesaid scroll actions or rotary movement by the mechanicals efforts that above-mentioned stepwise operation produces.
When visually looking, stepwise operation will constitute at cylinder when clockwise direction rotates, through third quadrant face to the second quadrant face and after moving to the peak of cylinder, the inner peripheral surface from cylinder breaks away from suddenly from the minimum point of cylinder, and drops to the form of the minimum point of cylinder.Thus, in stepwise operation, the distance that drops in the inside of cylinder under the less situation of washing bag amount, can more effectively provide mechanicals efforts with maximum.
In addition, for the braking of above-mentioned cylinder, above-mentioned motor 140 is preferably by plugging, and above-mentioned plugging is that the opposite direction of the direction in the motor rotation produces the mode of revolving force with braking motor.For produce with motor rotation in side's revolving force in the opposite direction, the phase place (phase) of the electric current of supplying with in the motor is reversed, above-mentioned plugging makes the brake hard of motor become possibility, therefore, above-mentioned plugging will be the mode of braking that is fit to the most for the above-mentioned stepwise operation that applies thump to washings.
Subsequently, above-mentioned motor 140 applies moment of torsion to above-mentioned cylinder 130 again, make the washings of the minimum point of cylinder rise to peak, promptly, applying moment of torsion after the clockwise direction rotation, apply moment of torsion moment is rotated promptly to stop to counter clockwise direction, will rotate to clockwise direction again with after-applied moment of torsion, thereby realize above-mentioned stepwise operation.
Consequently, above-mentioned stepwise operation is when cylinder is rotated, and the washings and the washings that flow into through hole 131 is rubbed, and carry out washing operation, when washings is positioned at the peak of cylinder, it is dropped, and carry out the action of washing operation by impulsive force.
Fig. 2 (d) is the schematic diagram that illustrates wobbling action (swing motion), above-mentioned wobbling action is to be controlled as, above-mentioned motor 140 makes cylinder 130 be rotated to two directions, and makes washings be about the action of dropping in the position below 90 degree from the direction of rotation of cylinder.
Promptly, when above-mentioned motor 140 makes above-mentioned cylinder 130 when counter clockwise direction is rotated to be about 40RPM, the washings that is positioned at the minimum point of above-mentioned cylinder 130 will rise to both take the altitudes to counter clockwise direction, at this moment, washings arrive be about the positions of 90 degree from the counter clockwise direction of cylinder before, above-mentioned motor makes cylinder stop to be rotated, thereby washings is moved to the minimum point direction of cylinder from the position that the counter clockwise direction of cylinder is about below 90 degree.
Subsequently, above-mentioned motor 140 makes above-mentioned cylinder 130 be rotated to be about 40RPM to clockwise direction, and make the washings in dropping rise to both take the altitudes to clockwise direction along the direction of rotation of cylinder, at this moment, washings arrive be about the positions of 90 degree from the clockwise direction of cylinder before, above-mentioned motor 140 makes cylinder stop to be rotated, thereby washings is moved to the minimum point direction of cylinder from the position that the clockwise direction of cylinder is about below 90 degree.
Promptly, wobbling action is the direction rotation of cylinder and stops and action that contrary direction rotation and stopping to be carried out repeatedly, when visually looking, it is to carry out four-quadrant face that washings is thus lifted to cylinder repeatedly to a first quartile face part and soft dropping, and is thus lifted to third quadrant face to the second quadrant face part of cylinder and the form of soft action of dropping.
At this, will utilize dynamic brake as the braking of above-mentioned motor 140, make the load minimizes that produces in the motor 140 thus, make the minimized while of mechanical friction of motor 140, can regulate the impact that applies on the washings.
Above-mentioned dynamic brake is that motor will play the mode of braking of the effect of generator under the effect of rotatory inertia when utilizing the electric current that inserts in the motor to be closed (OFF).When the electric current that inserts in the motor is closed (OFF), flow on the coil of electric current sense of current will sense of current be opposite before with power-off (OFF), thereby will produce active force (Fu Laiming right-hand rule), and braking motor to the direction that hinders the motor rotation.Above-mentioned dynamic brake is different with above-mentioned plugging, and it does not make motor by brake hard, but the direction of rotation of soft conversion cylinder.
Therefore, when visually looking, above-mentioned wobbling action will constitute washings striding across the third quadrant face and the four-quadrant face of cylinder, and the form that flows with 8 font attitudes of accumbency.
Fig. 2 (e) illustrates the schematic diagram of cleaning action (scrub motion), above-mentioned scouring action is to be controlled as, above-mentioned motor 140 makes cylinder 130 be rotated with two directions, and makes washings be about the action of dropping in the position more than 90 degree from the direction of rotation of cylinder.
Promptly, when above-mentioned motor 140 makes above-mentioned cylinder 130 when counter clockwise direction is rotated to be about 60RPM, the washings that is positioned at the minimum point of above-mentioned cylinder 130 will rise to both take the altitudes to counter clockwise direction, at this moment, after washings is through the position that is about 90 degree on the counter clockwise direction of cylinder, above-mentioned motor will provide contrary moment of torsion to cylinder, thereby make above-mentioned cylinder temporarily stop to be rotated, at this moment, the washings of the inner peripheral surface of cylinder will sharply drop.
Subsequently, above-mentioned motor 140 makes above-mentioned cylinder 130 be rotated to be about 60RPM to clockwise direction, and make the washings that drops rise to both take the altitudes to clockwise direction, at this moment, behind the position of washings through 90 degree on the clockwise direction of cylinder, above-mentioned motor 140 will provide contrary moment of torsion to cylinder, thereby make above-mentioned cylinder temporarily stop to be rotated, at this moment, the washings of the inner peripheral surface of cylinder position more than 90 degree from the clockwise direction of cylinder drops to the minimum point of cylinder.
Thus, in above-mentioned scouring action, sharply drop and washings is carried out washing operation from both take the altitudes by washings.In addition, in order to brake above-mentioned cylinder, above-mentioned motor 140 is preferably by plugging.
Because the direction of rotation of cylinder is sharply changed, the inner peripheral surface of the disengaging cylinder that washings will can be not bigger, thus can obtain the very powerful effect of washing by rubbing with the hands.Above-mentioned scouring action is to carry out repeatedly sharply dropping through four-quadrant face and the washings that moves to a first quartile face part, again through the third quadrant face and move to the form of the action of dropping after the second quadrant face part.Therefore, when visually looking, above-mentioned scouring action will constitute the form of the action that the washings that is raised descends repeatedly along the inner peripheral surface of cylinder.
Fig. 2 (f) is the schematic diagram that illustrates filter action (filtration), above-mentioned filter action is, above-mentioned motor 140 is rotated cylinder 130, and makes washings prevent to drop from the inner peripheral surface of cylinder under action of centrifugal force, and the while is to the action of the internal spray washings of above-mentioned cylinder.
Promptly, in above-mentioned filter action, after being unfolded, washings is close in the process that the inner peripheral surface of cylinder is rotated, will be to the internal spray washings of cylinder, and washings are under action of centrifugal force, to be discharged to wash bucket 120 via the through hole 131 of washings, cylinder, thus, in above-mentioned filter action, when the surface area that makes washings is widened, because washings can connect washings, can obtain making washings to supply to the effect of washings uniformly.
In above-mentioned filter action, will realize in the following way to the mode of roller spray washings, that is, utilize circulation stream (not shown) and take out pump (not shown) washings that store in the wash bucket are circulated and to spray.
In addition, in above-mentioned filter action, can be under the situation that washings do not spray, the inner peripheral surface that makes washings be close to cylinder is rotated, this will produce the dispersion of washing bag, is suitable for for the dispersion that produces the washing bag in washing process thereby soak the back at the washing bag.
And, in above-mentioned filter action, the washings that store in the wash bucket are not circulated, but carry out from the mode of the clean washings of the water-supply source supply of outside with injection.For with wash bucket in the situation of the washings circulation that stores distinguish, at this it is defined as jet cleaning action (Spray Rinse motion), to utilize clean washings in above-mentioned jet cleaning action, therefore, it is the action that is suitable for the stroke of needs cleaning.
Fig. 2 (g) is the schematic diagram that illustrates extrusion action (squeeze motion), above-mentioned extrusion action is, above-mentioned motor 140 is rotated cylinder 130, and make washings under action of centrifugal force, prevent to drop from the inner peripheral surface of cylinder, reduce the rotary speed of cylinder 130 subsequently, and carry out the action that washings separates from the inner peripheral surface of cylinder repeatedly, and in the rotary course of above-mentioned cylinder to the action of the internal spray washings of cylinder.
Promptly, the difference of above-mentioned filter action and above-mentioned extrusion action is, in above-mentioned filter action, to proceed rotation with the speed that washings does not drop from the inner peripheral surface of cylinder, but in above-mentioned extrusion action, to change the rotary speed of above-mentioned cylinder, and carry out the action that washings is close to and is separated from the inner peripheral surface of cylinder 130 repeatedly.
Though the not shown process that goes out in above-mentioned filter action and extrusion action to the internal spray washings of above-mentioned cylinder 130 among Fig. 2, but it can and take out pump and realize by the circulation stream, it can be set to, the above-mentioned pump of taking out is communicated with and the washings that pressurize with the bottom surface of wash bucket 120, one side of above-mentioned circulation stream is connected with the above-mentioned pump of taking out, opposite side from the top of above-mentioned cylinder to the internal spray washings of cylinder.
Just, above-mentioned circulation stream and necessary structure when taking out pump and being the washings that in spraying wash bucket, store, it is not the situation that is intended to get rid of by the internal spray washings of the above-mentioned cylinder of injection feedwater flow road direction that is connected with the water-supply source of hull outside.That is, when a side of above-mentioned injection feedwater stream is connected with water-supply source, opposite side is connected with above-mentioned wash bucket, and be provided with can be when the nozzle of the internal spray washings of above-mentioned cylinder, can filter action with extrude move in to the internal spray washings of cylinder.
Fig. 3 is the more detailed schematic diagram that illustrates above-mentioned stepwise operation.When motor 140 when cylinder 130 applies moment of torsion with certain orientation, cylinder 130 will be rotated to moving direction, and washings will be close to the inner peripheral surface of cylinder 130 and promote, at this moment, for the inner peripheral surface that makes washings be close to cylinder promotes, cylinder preferably is rotated to be about more than the 60RPM.Wherein, the rotary speed of cylinder by with the relation decision of the internal diameter of cylinder, it is decided to be centrifugal force will be greater than the rotary speed of gravity.
In the positions of washings 90 degree on the direction of rotation of the cylinder 130 of associating and reach in the cylinder before the peak, temporarily stop the rotation in order to make above-mentioned cylinder, motor 140 will be by plugging.Because the position of the washings in the plugging time point of motor 140 and the cylinder 130 has close association, therefore, preferably is provided with the device that can judge or dope the position of washings.As the one example, can be the checkout gear of the Hall element (Halleffect sensor) that is provided with the anglec of rotation that to judge rotor.
Control part also can be judged direction of rotation by above-mentioned Hall element except the anglec of rotation of rotor.Xiang Guan content belongs to common practise for the technical staff of relevant industries therewith, will save detailed explanation at this.
Control part can be judged the anglec of rotation of cylinder by above-mentioned detection device, and before cylinder arrives 180 degree the above-mentioned motor of control 140 by plugging.Wherein, plugging refers to, and inserts anti-phase electric current for cylinder is rotated round about.For example, in motor, insert electric current and make it after the clockwise direction rotation, insert electric current suddenly and make it to rotation counterclockwise.
Thus, cylinder in the clockwise direction rotation will stop to be rotated moment, and the angle of this moment reaches 180 degree in fact, thereby makes washings drop to the minimum point of cylinder inside from the peak of cylinder inside, subsequently, in order to make cylinder continue to continue to insert electric current to the clockwise direction rotation.
Illustrate cylinder among Fig. 3 to right handed situation, but also can carry out stepwise operation in the rotation in the counterclockwise direction, just, owing in above-mentioned stepwise operation, on motor 140, will produce high capacity, therefore, preferably reduction is clean moves rate and carries out above-mentioned stepwise operation.
Clean moving rate refers to the ratio for the motor-driven time of the summation of the driving time of motor 140 and dwell time, and moving only rate is driving of 1 no dwell time of expression.Under the situation of above-mentioned stepwise operation, consider the load of accepting in the motor, preferably control to be about 70% clean moving rate.As the one example, can be to stop 4 second time after driving 10 second time.
Fig. 4 is the more detailed schematic diagram of cleaning action that illustrates.When motor 140 when cylinder 130 applies moment of torsion, washings in the cylinder will be rotated to clockwise direction, for the inner peripheral surface that makes washings be close to cylinder is rotated, preferably controls above-mentioned motor 140 and above-mentioned cylinder 130 is had be about the above rotation number of 60RPM.Subsequently, when washings passes through the position of 90 degree on the direction of rotation of cylinder, because motor 140 will be by plugging, the washings of being close to the inner peripheral surface of cylinder will drop to the minimum point of cylinder.
When washings drops to minimum point, above-mentioned motor 140 will provide and make cylinder to the moment of torsion that counterclockwise rotates, thus, the washings that drops will be close to the inner peripheral surface of cylinder and be rotated to counter clockwise direction, when washings be in minimum point from cylinder on counter clockwise direction 90 degree positions and the peak of cylinder between the time, above-mentioned motor will be by plugging, and the washings of being close to the inner peripheral surface of cylinder will drop to the minimum point of cylinder.
Identical with above-mentioned stepwise operation, because above-mentioned scouring action also will produce high capacity on motor 140, preferably reduce clean moving rate and carry out above-mentioned scouring action.As the one example, can be to carry out repeatedly carrying out the operation that stops 4 second time after scouring is moved, thereby control with 70% clean moving rate with 10 second time.
In addition, though not shown, in wobbling action, the mode of braking of the motor in the above-mentioned scouring action is changed to dynamic brake, and the time point of dynamic brake changed to get final product when washings arrives on the direction of rotation of cylinder 90 degree positions, so will save detailed explanation.
Fig. 5 is the washing force of each action of illustrating in the comparison diagram 2 and the chart of the degree of vibration.Wherein, transverse axis is the axle of expression washing force, the spot that contains in its easy more more to the left separating, washing thing, and the longitudinal axis is the axle of expression vibration or noise level, it more will be high more to the top level of vibration, but will reduce for the wash time of identical washings.
Therefore above-mentioned stepwise operation and clean action and has outstanding washing force is the pollution level serious situation that is suitable for washings, and the action that is used to shorten the clothes washing process of wash time.And above-mentioned stepwise operation and scouring action are vibration and the high action of noise level, and therefore, it is not suitable for the situation of the clothing of washings sensitivity, or need make the clothes washing process of noise and minimum vibration.
Above-mentioned scroll actions be have outstanding washing force and the vibration level low, be action simultaneously to washing material injury minimizes and motor load is low, therefore, it can be suitable in all clothes washing process, but it is the action that is particularly suitable for washing initial stage detergent dissolution and washings dip operation.
Above-mentioned rotary movement is that washing force is lower than above-mentioned scouring action, but its level of vibration is the action of the by-level of above-mentioned scouring action and scroll actions.Though its level of vibration of above-mentioned scroll actions is low, when comparing with above-mentioned rotary movement, the wash time that needs are long.Above-mentioned rotary movement is suitable in all clothes washing process, but it is to be particularly suitable for being used to wash the action of wrapping the step of disperseing.
Above-mentioned extrusion action is similar with rotary movement on washing force, and its level of vibration is higher than rotary movement.In above-mentioned extrusion action, when washings the inner peripheral surface of cylinder be close to repeatedly with separating process in, washings will be discharged to the outside of cylinder via washings, therefore, it is the action that is suitable for the step that is used to clean.
Above-mentioned filter action is to be lower than the extrusion action on washing force, and the degree and the scroll actions of its noise are similarly moved.In above-mentioned filter action, to be close at washings under the state of inner peripheral surface of rolling, washings will and be discharged to the outside of cylinder via washings, and therefore, it is the action that is suitable for the step that needs washing bag soaks.
Above-mentioned wobbling action is the minimum action of level of vibration and washing force, and therefore, wobbling action is the action that is suitable for low noise or low vibration clothes washing process, and, be the action that is suitable for responsive clothes washing operation.
As previously mentioned, each drum driven action has its pluses and minuses respectively, therefore, preferably suitably uses above-mentioned multiple drum driven action.In addition, the action of each drum driven can have pluses and minuses fastening with the pass of washing bag amount, therefore, under the situation of same process, identical stroke etc., is preferably fastening the multiple drum driven action of suitable use with the pass of washing bag amount.
Fig. 6 is the flow chart of control method that is provided with the car washing installation of color clothing clothes washing process.
According to the control method of the car washing installation among the present invention, it may further comprise the steps: the process selection step S10 that selects color clothing clothes washing process; Supply with the feedwater step S20 of the required washings of washing to wash bucket; The water temperature that detects the temperature of washing water supplied detects step S30; When detected water temperature is fiducial temperature when following, the heating steps S40 of heated scrub water; The rotary speed of index drum 130 and direction of rotation, and the color clothes washing step S50 of washing washings; Clean the cleaning step S60 of washings; From washings, remove the dehydration S70 of washings.
When washing color clothing, will there be following problem, that is, and the colouring problem between the washings, the problem of fluffing (fluff) on the clothing, and balling-up (pilling) problem that drops of the knitting wool of clothing.And, the possibility height that above-mentioned colouring problem takes place under the high situation of the temperature of washings, the possibility height that takes place when fluffing and the frictional force of pilling effect between cylinder and washings are big.Therefore, will provide the step of controlling the temperature of washings in order to prevent to dye among the present invention, and in order to prevent to fluff and pilling effect and the color clothes washing step S50 and the cleaning step S60 of head roll.
At first, the user selects color clothing clothes washing process S10 by the operating portion that is arranged at control panel, the control device that is arranged at control panel will carry out supplying with to wash bucket the feedwater step S20 of washings when selecting color clothing clothes washing process by aforesaid operations portion.
When feedwater step S20 began, in order to supply with washings to above-mentioned wash bucket, the control part (not shown) that is arranged at control panel will be to controlling with the waterworks (feedwater stream, feed-water valve etc.) that water-supply source is connected with wash bucket.In the case, to wash bucket washing water supplied cold water preferably, this be because, the temperature of washings is high more, its possibility that dyeing takes place will be high more.
In addition, in above-mentioned feedwater step S20, control part control motor 140 makes above-mentioned cylinder 130 drive with the combination of wobbling action and filter action.Above-mentioned feedwater step S20 is when wash bucket 120 is supplied with the required washings of washing, makes the washings of throwing in the cylinder 130 be washed the step of water-soaked.Therefore, in above-mentioned feedwater step S20, can be easy to wash bag by filter action and soak.
And, in feedwater step S20, except above-mentioned filter action, also can append above-mentioned cylinder is driven with wobbling action.This be because, compare with other action, above-mentioned wobbling action is to make the washings in the cylinder move minimized action, thereby can make the minimizing possibility of the fluffiness generation that causes owing to the friction between the washings, and pilling effect is minimized.
When feedwater step S20 finished, the water temperature that will detect the water temperature of washing water supplied in the wash bucket detected step S30.Subsequently, when the water temperature of detected washings is that fiducial temperature (30 degrees centigrade or 40 degrees centigrade) is when above, to carry out color clothes washing step S50, when the water temperature of washings during less than the said reference temperature (because washing water supplied is a cold water in the feedwater step), will be used for the heating steps S40 of heated scrub water.In the case, the reason that the temperature (fiducial temperature) that will be used to carry out the washings of color clothes washing step S50 is set at 30 degrees centigrade (or 40 degrees centigrade) is, making the minimizing possibility of dyeing and making the temperature of the maximized washings of washing force is 30 degrees centigrade to 40 degrees centigrade temperature range.
And above-mentioned heating steps S40 is that heater (not shown) heating by being provided with in the car washing installation is to the step of wash bucket washing water supplied.Above-mentioned heater can be the heater (not shown) that is arranged at the wash bucket bottom surface, also can be the steam raising plant (not shown) to wash bucket internal feed steam (steam).
When making the temperature of washings reach said reference temperature (30 degrees centigrade or 40 degrees centigrade) by above-mentioned heating steps S40, will carry out color clothes washing step S50.In above-mentioned color clothing laundry step S50, in order to prevent the phenomenon of fluffing and balling-up, above-mentioned motor 140 will drive above-mentioned cylinder 130, make mechanical friction power reach the minimized desirable laundry performance that realizes simultaneously.At this, illustrate the color clothes washing step S50 that comprises wobbling action and stepwise operation among Fig. 6.
Above-mentioned wobbling action S52 is controlled as, and motor 140 makes above-mentioned cylinder 130 be rotated to two directions, and the action that when the direction of rotation through cylinder is about the position of 90 degree washings is dropped.This be because, in above-mentioned wobbling action, utilize dynamic brake as the braking of motor, this will make the physical property minimise friction that applies on the washings in the washing force that keeps certain level.Thus, can make owing to the fluffing that the friction between the friction between the washings or washings and the cylinder causes, the minimizing possibility of pilling effect.
Above-mentioned stepwise operation S51 makes above-mentioned cylinder with after preventing that speed that washings drops from the cylinder inner peripheral surface is rotated, and with above-mentioned cylinder brake hard, and makes the action of the impulsive force maximization that washings is subjected to.Thus, can replenish the washing force of wobbling action by the outstanding washing force of above-mentioned stepwise operation, but the carrying out time that preferably makes above-mentioned stepwise operation S51, S53 is shorter than the carrying out time of above-mentioned wobbling action S52, S54, thus the minimizing possibility that fluffing, pilling effect are taken place.
When color clothes washing step S50 finishes, the washings that in discharging washing, use, and after wash bucket resupplies clean washings, the cleaning step S60 that cylinder will be driven with filter action.Above-mentioned filter action is that motor 140 makes cylinder 130 with after preventing that speed that washings drops from the inner peripheral surface of cylinder is rotated, to the internal spray washings of above-mentioned cylinder, and the action that helps soaking or cleaning washings.And, produce friction between the washings because it does not make, and do not make generation friction between washings and the cylinder, thereby can clean washings at short notice.In addition, in order to replenish the cleaning performance of above-mentioned filter action, can append rotary movement and carry out cleaning step S60.
After cleaning step S60 finishes, will be used for removing the dehydration S70 of washings, and color clothing clothes washing process is finished from washings.
Illustrate another embodiment of the control method of the car washing installation among the present invention among Fig. 7.Compare with the embodiment among Fig. 6, in the present embodiment, behind feedwater step S20, with the heating steps S40 that carries out color clothes washing step S50 simultaneously and detect by water temperature.
Embodiment as shown in Figure 6 when water temperature detects step S30 and heating steps S40 and carried out before color clothes washing step S50, will make wash time increase.Therefore, compare with the embodiment of Fig. 6, present embodiment will provide the color clothing that can shorten wash time clothes washing process.
Behind feedwater step S20, in the process of the stepwise operation S51 that carries out color clothes washing step S50, judge whether the temperature of washings is the above S31 of fiducial temperature (30 degrees centigrade or 40 degrees centigrade).
When the temperature of washings is that said reference temperature (30 degrees centigrade or 40 degrees centigrade) is when above, to behind above-mentioned stepwise operation S51, carry out wobbling action S52, when the temperature of washings is said reference temperature when following, will be used for the heating steps S40 of heated scrub water.
Just, above-mentioned heating steps S40 preferably carries out after above-mentioned stepwise operation S51 finishes, that is, above-mentioned heating steps S40 can carry out simultaneously with wobbling action S52, but does not preferably carry out simultaneously with above-mentioned stepwise operation S51.This be because, even regulate the clean moving rate of above-mentioned stepwise operation, situation when the load of accepting in the motor 140 also will be moved greater than other, when proceeding to be used for the heating steps S40 of heated scrub water in the process of carrying out stepwise operation, will in the consumption that increases electric power, cause the increase of the magnitude of current, thereby cause the problem of security.
Therefore, after above-mentioned stepwise operation finished, above-mentioned heating steps S40 and wobbling action S52 together carried out, and the step of carrying out is identical with the embodiment shown in Fig. 6 subsequently, and saves detailed explanation at this.
Deformable of the present invention is that variform is implemented, and therefore, interest field of the present invention is not to be defined in the foregoing description, and when comprising the structural element in claims of the present invention among the embodiment as if distortion, it should be considered to belong to interest field of the present invention.
Claims (6)
1. the control method of a car washing installation comprises in car washing installation with lower member: the wash bucket that is used to store washings; Rotatablely be arranged at above-mentioned wash bucket, be used to store the cylinder of washings; Be used for detecting the temperature-detecting device of the water temperature of above-mentioned wash bucket washing water supplied; Be used to control the control device of car washing installation, it is characterized in that, may further comprise the steps:
Selection is used to wash the process selection step of the color clothing clothes washing process of color clothing;
Supply with the feedwater step of washings to above-mentioned wash bucket;
Be provided with stepwise operation, promptly, make the step of above-mentioned cylinder repeatedly to prevent that speed that washings separates from the inner peripheral surface of cylinder is rotated to a direction, and the color clothes washing step that when washings is positioned at 180 degree positions on the direction of rotation of cylinder, makes the step that above-mentioned cylinder stops to be rotated;
Detect step by the detection of said temperature checkout gear to the water temperature of the temperature of above-mentioned wash bucket washing water supplied;
Washings are heated to 30 degrees centigrade heating steps.
2. the control method of car washing installation according to claim 1, it is characterized in that, in above-mentioned color clothes washing step, also comprise following action: wobbling action, it is controlled as, make above-mentioned cylinder to the rotation that hockets of two directions, and behind direction of rotation 90 degree positions, washings is dropped through above-mentioned cylinder.
3. the control method of car washing installation according to claim 1, it is characterized in that, above-mentioned feedwater step is carried out to comprise following action: filter action, promptly, with the step that makes above-mentioned cylinder to prevent that speed that washings separates from the inner peripheral surface of cylinder is rotated to a direction simultaneously, and to the step of the internal spray washings of above-mentioned cylinder.
4. the control method of car washing installation according to claim 3, it is characterized in that, in above-mentioned feedwater step, also comprise following action: wobbling action, it is controlled as, make above-mentioned cylinder to the rotation that hockets of two directions, and behind direction of rotation 90 degree positions, washings is dropped through above-mentioned cylinder.
5. the control method of car washing installation according to claim 1, it is characterized in that, also comprise the cleaning step that and then above-mentioned washing step carries out, above-mentioned cleaning step carries out to comprise following action: filter action, promptly, with the step that makes above-mentioned cylinder to prevent that speed that washings separates from the inner peripheral surface of cylinder is rotated to a direction simultaneously, and to the step of the internal spray washings of above-mentioned cylinder.
6. the control method of car washing installation according to claim 5, it is characterized in that, comprise also in the above-mentioned cleaning step that following action carries out: rotary movement, promptly, above-mentioned cylinder is rotated to a direction, and is dropped in the washings 90 degree positions on the direction of rotation of cylinder that are positioned at above-mentioned cylinder inner peripheral surface.
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020090073960A KR101625046B1 (en) | 2009-08-11 | 2009-08-11 | Controlling Method of Washing Machine |
| KR10-2009-0073960 | 2009-08-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8966944B2 (en) | 2008-08-01 | 2015-03-03 | Lg Electronics Inc. | Control method of a laundry machine |
| US9416478B2 (en) | 2009-03-31 | 2016-08-16 | Lg Electronics Inc. | Washing machine and washing method |
| ES2605027T3 (en) | 2009-02-11 | 2017-03-10 | Lg Electronics Inc | Washing machine |
| KR101609681B1 (en) | 2009-06-30 | 2016-04-20 | 삼성전자 주식회사 | Washing machine and method to control thereof |
| US9234307B2 (en) | 2009-07-27 | 2016-01-12 | Lg Electronics Inc. | Control method of a laundry machine |
| US9695537B2 (en) | 2009-07-27 | 2017-07-04 | Lg Electronics Inc. | Control method of a laundry machine |
| US10533275B2 (en) | 2009-07-27 | 2020-01-14 | Lg Electronics Inc. | Control method of a laundry machine |
| US9822473B2 (en) | 2009-07-27 | 2017-11-21 | Lg Electronics Inc. | Control method of a laundry machine |
| US9045853B2 (en) | 2009-10-13 | 2015-06-02 | Lg Electronics Inc. | Laundry treating apparatus |
| US8776297B2 (en) | 2009-10-13 | 2014-07-15 | Lg Electronics Inc. | Laundry treating apparatus and method |
| CN105088630A (en) * | 2014-04-18 | 2015-11-25 | 无锡小天鹅股份有限公司 | Washing machine and color-protecting method thereof |
| CN105088668A (en) * | 2014-04-18 | 2015-11-25 | 无锡小天鹅股份有限公司 | Washing machine and color-protecting method thereof |
| CN107022870A (en) * | 2016-02-01 | 2017-08-08 | 东华大学 | A kind of infant clothing control method of washing and roller washing machine |
| CN110894660A (en) * | 2018-08-23 | 2020-03-20 | 无锡小天鹅电器有限公司 | Washing control method and device and clothes treatment device |
| CN108950987A (en) * | 2018-08-28 | 2018-12-07 | 珠海格力电器股份有限公司 | Washing control method and device |
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| JP2004159974A (en) * | 2002-11-14 | 2004-06-10 | Matsushita Electric Ind Co Ltd | Washing machine |
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| CN101407991A (en) * | 2007-09-25 | 2009-04-15 | 松下电器产业株式会社 | Drum type washing machine |
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| JP2004159974A (en) * | 2002-11-14 | 2004-06-10 | Matsushita Electric Ind Co Ltd | Washing machine |
| CN101177870A (en) * | 2006-11-08 | 2008-05-14 | 南京乐金熊猫电器有限公司 | Stroke control method for washing machine |
| CN101407991A (en) * | 2007-09-25 | 2009-04-15 | 松下电器产业株式会社 | Drum type washing machine |
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