CN102686789A - Control method of laundry machine - Google Patents

Control method of laundry machine Download PDF

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Publication number
CN102686789A
CN102686789A CN2010800429479A CN201080042947A CN102686789A CN 102686789 A CN102686789 A CN 102686789A CN 2010800429479 A CN2010800429479 A CN 2010800429479A CN 201080042947 A CN201080042947 A CN 201080042947A CN 102686789 A CN102686789 A CN 102686789A
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CN
China
Prior art keywords
cylinder
control method
rotating speed
irregular oscillation
washing machine
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Pending
Application number
CN2010800429479A
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Chinese (zh)
Inventor
张宰赫
具本权
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LG Electronics Inc
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LG Electronics Inc
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Publication date
Priority claimed from KR1020090079912A external-priority patent/KR101741549B1/en
Priority claimed from KR1020090079923A external-priority patent/KR20110022367A/en
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of CN102686789A publication Critical patent/CN102686789A/en
Pending legal-status Critical Current

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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F35/00Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005Methods for washing, rinsing or spin-drying
    • D06F35/007Methods for washing, rinsing or spin-drying for spin-drying only
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
    • D06F37/225Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14Arrangements for detecting or measuring specific parameters
    • D06F34/16Imbalance

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

A control method of a laundry machine is disclosed. The control method of a laundry machine comprising a balancer includes a step configured to determine an irregular vibration region of the laundry machine and a balancing step implemented at least one time before a rotation speed of a drum enters the irregular vibration region, while the rotation speed is passing the irregular vibration region and after the rotation speed passes the irregular vibration region.

Description

The control method of washing machine
Technical field
The present invention relates to a kind of control method of washing machine.
Background technology
Usually, washing machine can comprise three operation cycle of washing, rinsing and dehydration (drying).Here, dewatering cycle comprises and makes the cylinder that is arranged in this washing machine rotation step with the highest RPM (revolutions per minute) rotation.Because this step, dewatering cycle can produce sizable noise and vibration, and this is the problem that under the present invention, needs solution in the field.
Summary of the invention
Technical problem
Therefore, the present invention is intended to propose a kind of control method of washing machine.
The control method that the purpose of this invention is to provide the washing machine that can overcome the above problems.
Technical scheme
For addressing these problems, the purpose of this invention is to provide a kind of control method that comprises the washing machine of balancer, this control method comprises: the regional step of irregular oscillation that is configured to be used for confirming washing machine; And equilibrium step, before the rotating speed of cylinder gets into this irregular oscillation zone, in this this irregular oscillation zone of rotating speed process and after this this irregular oscillation zone of rotating speed process, this equilibrium step is performed at least once.
Beneficial effect
The present invention mentioned above can obtain following advantage:
According to the present invention, its favourable part is, even in the irregular oscillation zone that during cylinder rotation (rotation especially at a high speed), possibly occur, still can reduce the vibration of cylinder effectively.
Description of drawings
Comprise in this specification that accompanying drawing is for further understanding the present invention; These accompanying drawings combine in this application and constitute the application's a part, have demonstrated a plurality of embodiment of the present invention, and have been used for explaining principle of the present invention with specification.
In the accompanying drawings:
Fig. 1 is the cutaway view that common washing machine is shown;
Fig. 2 is the cutaway view that illustrates according to the example of washing machine of the present invention;
Fig. 3 is the exploded perspective view of Fig. 2;
Fig. 4 is the curve map of vibration characteristics that the washing machine of Fig. 2 is shown;
Fig. 5 is the curve map that illustrates according to the example of the control method of washing machine of the present invention;
Fig. 6 is the curve map that illustrates according to another example of the control method of washing machine of the present invention;
Fig. 7 is the curve map that illustrates according to other example of the control method of washing machine of the present invention; And
Fig. 8 is the curve map that the relation of expression quality and intrinsic frequency is shown.
The specific embodiment
To introduce specific embodiment of the present invention in detail below, demonstrate the example of these embodiment in the accompanying drawings.As much as possible, in institute's drawings attached, refer to same or analogous parts with identical Reference numeral.
With reference to Fig. 1, washing machine 100 comprises: casing 10, and it is configured in order to limit the outward appearance of this washing machine; Be installed in the steel ladle 20 in the casing 10, in order to the splendid attire washings; And cylinder 30, can be rotatably set in the steel ladle 20.
Casing 10 defines the outward appearance of washing machine 100, and a plurality of constructional elements that will describe after a while can be installed in the casing 10.Door 11 is connected to the front portion of casing 10, and the user can open door 11 with in clothing (to call " clothing " in the following text) casing 10 of packing into that will comprise clothes, bedding, textiles and so on.
Be configured to be arranged in the casing 10, and be configured to be set in steel ladle 20 rotatable in order to the cylinder of accommodating laundry in order to the steel ladle 20 of splendid attire washings.In this situation, a plurality of lifters (lifter) 31 can be set in cylinder 30 during the rotation of cylinder 30 so that clothing rises and falls.
Steel ladle 20 can be supported by the spring that is arranged on steel ladle 20 tops 50.Here, motor 40 is installed to the back surface of steel ladle 20, in order to rotary drum 30.That is, motor 40 is arranged on the rear wall of steel ladle 20 and makes cylinder 30 rotations.When in by the cylinder 30 of motor 40 driven in rotation, producing vibration, be arranged on according to the steel ladle in the washing machine of present embodiment 20 and possibly vibrated explicitly with cylinder 30.When cylinder 30 rotations, the shock absorber 60 that the vibration that produces in cylinder 30 and the steel ladle 20 can be set at steel ladle 20 belows absorbs.
As shown in fig. 1, steel ladle 20 can be provided with the bottom of casing 10 with cylinder 30 abreast, perhaps dips down (although not shown this set-up mode) tiltedly is set.When the user was loaded into clothing in the cylinder 30, advantageously, the front portion of steel ladle 20 and cylinder 30 should be inclined upwardly.
Rotate the vibration of the dewatering cycle intermediate roll of (especially with rotation at a high speed) in order to be suppressed at cylinder, balancer 70 is set so that the cylinder balance will be described balancer 70 in detail after a while at front surface and/or surface, back.
According to the washing machine of an embodiment, steel ladle can support on the casing regularly, perhaps can be by such as after a while the flexible support structures of describing such as suspension unit being set on the casing.In addition, the supporting way of steel ladle can and be completely fixed between the support between the support of suspension unit.
That is, steel ladle can perhaps can be supported for movable more rigidly mode by after a while the suspension unit of describing being supported flexibly with being completely fixed.With after a while with the embodiment that describes different be casing to be set, although not shown this situation in the accompanying drawing.For example, under the situation of built-in (embedded) washing machine, can form the predetermined space that this built-in washing machine wherein is installed by wall construction or analog (but not casing).In other words, built-in washing machine can not comprise the casing that is configured to limit independently its outward appearance.
With reference to Fig. 2 and Fig. 3, the steel ladle 12 that is arranged in the washing machine supports on the casing regularly.Steel ladle 12 comprises: steel ladle front portion 100, and it is configured to limit the front component of this steel ladle; And steel ladle rear portion 120, it is configured to limit the back component of this steel ladle.Steel ladle anterior 100 and steel ladle rear portion 120 are assembled with each other through screw, hold cylinder to form enough big predetermined space.Be formed with opening in the rear portion at steel ladle rear portion 120, and the inner peripheral of the rear portion at formation steel ladle rear portion 120 is connected with the outer peripheral edges of back liner 250.The through hole that steel ladle rear portion 130 has centre formation therein passes wherein for one.Back liner 250 is by can the transfer of vibration at steel ladle rear portion 130 not being processed to the flexible material at steel ladle rear portion 120.
Steel ladle rear portion 120 has surface, back 128, and this surface, back 128, steel ladle rear portion 130 and back liner 250 can limit the rear wall of steel ladle.Back liner 250 is tightly connected with steel ladle rear portion 130 and steel ladle rear portion 120, makes that the washings that are contained in the steel ladle can seepage.Steel ladle rear portion 130 vibrates with cylinder during the rotation of cylinder.At this moment, steel ladle rear portion 130 fully separates with steel ladle rear portion 120, so that do not interfere with the steel ladle rear portion.Because back liner 250 is made up of flexible material, so it can allow steel ladle rear portion 130 under the situation of not interfering with steel ladle rear portion 120, to carry out relative motion.Back liner 250 can comprise pleated portions 252, and this pleated portions may extend to predetermined length and carries out relative motion to allow steel ladle rear portion 130.
Be configured in order to prevent that the anti-foreign matter member 200 between foreign matter entering steel ladle and the cylinder can be connected to the anterior part of steel ladle anterior 100.Anti-foreign matter member 200 is supported by flexible material, and is fixed to steel ladle anterior 100.Here, anti-foreign matter member 200 can be by processing with the flexible material identical materials that constitutes back liner 250.Below, should prevent that foreign matter member 200 was called " preceding liner ".
Cylinder 32 comprises cylinder front portion 300, cylinder pars intermedia and cylinder back 340.Balancer 310 and 330 can be installed in respectively in the front component and back component of cylinder.Cylinder rear portion 340 is connected with pocket-wheel (spider) 350, and pocket-wheel 350 is connected with axle 351.Cylinder 32 is rotated in steel ladle 12 by the torque drive of transmitting via axle 351.
Axle 351 passes steel ladle rear portion 130 and directly is connected with motor 170.Particularly, the rotor 174 of formation motor 170 directly is connected with axle 351.Bearing block 400 is fixed to the rear portion at steel ladle rear portion 130, and bearing block 400 rotatably supports the axle between motor 170 and steel ladle rear portion 130.
The stator 172 that constitutes motor 170 is fixed to bearing block 400, and rotor 174 is provided with around stator 172.As indicated above, rotor 174 directly is connected with axle 351.Here, motor 170 is external-rotor motors, and it directly is connected with axle 351.
Bearing block 400 is supported with respect to chassis base 600 via suspension unit.Suspension unit 180 comprises three vertical support member and two inclined support, and these two inclined support are configured in order to respect to front-rear direction supporting bearing base 400 obliquely.
Suspension unit 180 can comprise the first cylinder body spring 520, the second cylinder body spring 510, the 3rd cylinder body spring 500, the first cylinder body shock absorber 540 and the second cylinder body shock absorber 530.
The first cylinder body spring 520 is connected between first suspension holdfast 450 and the chassis base 600.The second cylinder body spring 510 is connected between suspension holdfast 440 and the chassis base 600.
The 3rd cylinder body spring 500 directly is connected between bearing block 400 and the chassis base 600.
The first cylinder body shock absorber 540 is mounted obliquely between the rear portion of first suspension holdfast 450 and chassis base 600.The second cylinder body shock absorber 530 is mounted obliquely between the rear portion of second suspension holdfast 440 and chassis base 600.
The cylinder body spring 520,510 of suspension unit 180 and 500 can flexibly be connected to chassis base 600, the cylinder that its elasticity is enough to be connected to chassis base 600 with allowing on-fixed along preceding/rear to and a left side/right-hand to moving.That is, these springs are flexibly supported by base 600, with before allowing cylinder with respect to the coupling part/rear to and a left side/right-hand to the rotation predetermined angular.
In suspension unit, those vertical parts are configurable in order to flexibly slowing down the vibration of cylinder, and those parts that tilt configurable be in order to damped vibration.That is, among the vibrational system that comprises spring and vibration absorber, vertical device is used as spring, and the device that tilts is used as vibration absorber.
Fixedly install on the casing 110 at steel ladle anterior 100 and steel ladle rear portion 120, and the vibration of cylinder 32 is supported with suspended pattern by suspension 180.The supporting construction of steel ladle 12 and cylinder 32 can be described as basically the supporting construction of " independence ", even if thus when cylinder 32 vibrates, steel ladle 12 can not vibrated yet.
Bearing block 400 can be connected to each other through the first counterweight portion 431 and the second counterweight portion 430 with suspension holdfast.
After clothing 1 is encased in the cylinder 30 and 32 according to the washing machine of above embodiment, make under the situation of cylinder 30 and 32 rotations,, possibly produce very serious noise and vibration based on clothing 1 residing position.For example, when the down rotation of the not equally distributed state of cylinder 30 and 32 clothing within it (below be called " uneven rotation "), can produce very big noise and vibration.If especially so that clothing is dewatered, noise will be a problem with vibration cylinder 30 and 32 very much with rotation at a high speed.
Therefore, washing machine can comprise balancer 70,310 and 330, to prevent uneven vibration generated by rotation and the noise because of cylinder 30 and 32.Balancer 70,310 and 330 can be arranged on the anterior part or the rear portion of cylinder 30 and 32, perhaps is arranged on the anterior part and the rear portion of cylinder 30 and 32 simultaneously.
These balancers are installed on cylinder 30 and 32 to reduce imbalance.Therefore, the center of gravity of balancer can be mobile.For example, balancer can comprise located therein and have the movable body of predetermined weight and the passage that the motion of these movable bodys is followed.If this balancer can be ball balancer (ball balancer), balancer 70,310 and 330 can comprise the ball with predetermined weight located therein 72,312 and 332 and the passage that followed during the motion of these balls so.
To describe the structure of balancer 310 and 330 now in detail.
Balancer 310 comprises: raceway 312a; Ball 312, it can freely-movable in raceway 312a; And oil, it is filled among the raceway 312a to control the motion of ball 312.Above-mentioned ball adopts steel to process usually, and above-mentioned oil can use silica-based lubricating oil.
The operation principle of balancer will be described now.
When cylinder 32 rotations, because the decentered distribution of the clothing in its unbalanced eccentric structure and the cylinder 32 makes cylinder can not keep dynamic equilibrium (dynamic balancing).In this case, ball 312 can compensate dynamic unbalance (UB), makes this cylinder keep dynamic equilibrium.That is, if in the cylinder 32 dynamic unbalance takes place, then ball 312 moves to the opposite location of the occurrence positions of dynamic unbalance, with the imbalance of compensation cylinder 32.
Yet with respect to all rotating speeds of cylinder 32, ball 312 all automatically is positioned unbalanced opposite direction (below be called " balance "), so its is difficult to compensate substantially dynamic unbalance.This is because because variant sometimes between the rotating speed of the rotating speed of cylinder 32 and ball 312, so ball 312 is difficult to arrive equilbrium positions.
In addition, in the time interval that the rotating speed of cylinder increases, the position of ball 312 is changed, and therefore possibly not reach balance.Even after ball 312 is balanced, the position of ball 312 also possibly be changed.If ball 312 distributes with separated mode, then unbalanced position is near 90, and the vibration of cylinder 32 is very big, and it is unstable that balance possibly become.Therefore, for effectively realizing balance, should select the size of ball 312, shape, oil viscosity and the oily filled level of raceway 312a through the vibration characteristics of considering washing machine.
The vibration characteristics of washing machine according to this embodiment of the invention at first, will be described with reference to Fig. 4.
Along with drum rotation speed increases, can form the zone (below be referred to as " transient oscillation zone ") of irregular transient oscillation with high amplitude.Before, this transient oscillation zone with high amplitude occurs brokenly to carry out the transition to steady-state vibration zone (below be referred to as " stationary zones ") in vibration, and has fixed vibration characteristics when design vibrational system (washing machine).Although for dissimilar washing machines, this transient oscillation zone is different, and transient oscillation occurs in the scope of about 200rpm to 270rpm.Transient oscillation is considered to caused by resonance.Therefore, be necessary through considering that carrying out this factor of effective balance in the transient oscillation zone comes the design balance device.
Simultaneously, as indicated above, in washing machine according to an embodiment of the invention, vibration source (being motor and the cylinder that is connected with this motor) is connected with steel ladle 12 through back liner 250.Therefore, the vibration that in cylinder, takes place seldom is delivered to steel ladle, and cylinder is supported through bearing block 400 by vibration absorber and suspension unit 180.Therefore, steel ladle 12 can directly be fixed to casing 110, need not to be provided with any vibration absorber.
As the result of inventor's research of the present invention, in washing machine according to the present invention, having occurred usually can observed vibration characteristics.According to common washing machine, becoming stable through transient oscillation zone after vibration (displacement).Yet, in washing machine according to this embodiment of the invention, may be created in through transient oscillation zone after vibration and become stable and become the zone of big (below be called " irregular oscillation ") once more.For example, if in being lower than the RPM band (band) of transient area, produce maximum or bigger cylinder displacement, perhaps the steady-state process in being higher than the RPM band of transient area produces maximum or bigger cylinder displacement, then confirms to have produced irregular oscillation.Perhaps; If produced the average cylinder displacement in the transient area, produced average cylinder displacement in this transient area+displacement in 20% to-20% the scope, or produced 1/3 displacement more than or equal to the maximum cylinder displacement in the intrinsic frequency of this transient area, then can confirm to have produced irregular oscillation.
Yet as the result of research, irregular oscillation occurs in the RPM band that is higher than transient area, for example occurs in zone in about 350rpm to 1000rpm range of speeds (below be referred to as " irregular oscillation is regional ").Irregular oscillation possibly be owing to balancer, vibration insulating system and the use of liner afterwards cause.Therefore, in this washing machine, need take into account irregular oscillation zone and transient oscillation zone (two aspects) and come the design balance device.
For example, this balancer is set to ball balancer, preferably takes into account the structure that this balancer is selected in irregular oscillation zone and transient oscillation zone, i.e. the charging amount of the shape of the quantity of the size of ball, ball, raceway, oil viscosity and oil.When with transient oscillation zone and/or irregular oscillation zone, especially with the irregular oscillation zone during as Consideration, ball balancer have 255.8mm than major diameter and 249.2mm than minor diameter.The sectional area in the space that holds ball of raceway is 411.93mm 2The quantity of the ball of front and rear is respectively 14, and ball is of a size of 19.05mm.The silicon-based oil of for example using dimethyl silicone polymer (PDMS) is as above-mentioned oil.Preferably, oil viscosity at room temperature is 300CS, and charging amount is 350cc.
Except the structure of balancer,, preferably take into account irregular oscillation zone and transient oscillation zone from the consideration of control aspect.For example, for preventing irregular oscillation, if confirm the irregular oscillation zone, then can be before drum rotation speed be through the irregular oscillation zone, in the process or through implementing afterwards once balance at least.Here; If the rotating speed of cylinder is high relatively; Then may not implement the balance of balancer rightly, and under the situation that reduces drum rotation speed, implement balance possibly, yet; Be lower than transient area and implement balance if the rotating speed of cylinder is reduced to, then this rotating speed must pass through transient area once more.Rotating speed reducing cylinder is implemented under the situation of balance, and the rotating speed that is lowered can be higher than transient area.
To control method for washing machine according to an embodiment of the invention be described with reference to Fig. 5 to Fig. 7 now.When washing with washing machine, washing process generally comprises wash cycle, rinse cycle and dewatering cycle.In the present embodiment, with mainly describing the dewatering cycle that possibly cause irregular oscillation owing to the high rotating speed of cylinder.
Fig. 5 is the curve map that illustrates according to an example of the control method of washing machine of the present invention.The curve map of Fig. 5 illustrates drum rotation speed situation over time.In Fig. 5, trunnion axis express time, vertical axes are represented the rotating speed of target of cylinder, i.e. revolutions per minute (RPM).
As a reference, before description is used to reduce the control method of irregular oscillation, dewatering cycle is described earlier.Dewatering cycle comprises clothing allocation step S100 and dehydration S200.Clothing allocation step S100 is used to make clothing in the drum uniform distribution, to reduce unbalanced generation.Dehydration S200 is used for through the rotating speed of cylinder is brought up to the water that high rotational speed removes basically clothing.Yet, it being understood that clothing allocation step and dehydration just divides based on its major function for convenience's sake, and be not limited to their major function.For example, even if in the clothing allocation step, also can water be removed from clothing through the cylinder rotation.
Clothing allocation step S100 comprises wet wash sensing step S110, clothing allocation step S130 and uneven sensing step S150.Dehydration S200 can be divided into: main dehydration S260 is used for carrying out dehydration with desired speed basically; And accelerating step S250, be used to reach main dehydration S260.In the case, accelerating step S250 dehydration means that the execution acceleration is to reach main dehydration.Yet accelerating step 250 is not to be intended to carry out continuously quicken and do not carry out and slow down or constant speed.In other words, accelerating step S250 comprises accelerating step and deceleration steps and constant speed step.
At first, clothing dispersion steps S100 will be described in more detail.
If rinse cycle finishes, the clothing of drum wets.If dewatering cycle begins (S110), control part is the interior laundry amounts of sensing roller initially, promptly wet laundry amounts.The reason of control part sensing wet wash amount is, though the initial sensing of control part non-wet laundry amounts (laundry amounts of promptly doing), but the varying in weight of aqueous laundry in the weight of drying clothes.The wet wash amount that records can be used as the factor of the tolerable condition of confirming the acceleration cylinder in dehydration S200, or in main dehydration S260, is used as the factor of confirming drum rotation speed Tf-RPM.
Through with predetermined rotating speed A-RPM (general in the scope of 108RPM) cylinder being quickened and utilizing brake force that cylinder is slowed down, come sensing wet wash amount.Because this sensing to the wet wash amount is a well-known, therefore omit its detailed description.At sensing after the wet wash amount, control part is carried out clothing and is loosened step in cylinder, to distribute clothing (S130).The clothing step of loosening is with clothing uniform distribution in cylinder.Thereby prevent the unbalance factor of cylinder to be increased owing to clothing concentrates on the specific region.This is because if unbalance factor increases, and vibration can increase when the rotating speed of cylinder improves.Subsequently, control part sensing unbalance factor (S150).If the clothing in the cylinder is not uniform distribution, but concentrates on a presumptive area, then unbalance factor increases, thereby when the rotating speed of cylinder improves, causes vibration.Therefore, control part determines whether cylinder is quickened through the unbalance factor of sensing roller.Uneven sensing is when cylinder rotates, to utilize the difference of acceleration to carry out.That is, when cylinder rotated, the difference of the acceleration between the situation that situation that cylinder is rotated down and cylinder rotate up was based on uneven degree and takes place.The control part utilization is arranged on the difference that velocity sensor (like the hole sensor) in the drive motors is measured this acceleration, thus the sensing unbalance factor.Thus, as sense unbalance factor, the clothing in the cylinder is attached to inner wall of rotary drum, even cylinder can not fall when rotating yet.In the case, cylinder rotates with the rotating speed in the scope that is in about 108RPM.
To describe dehydration S200 in detail now.
As indicated above, dehydration S200 can be divided into and be used for carrying out the main dehydration S260 of dehydration and the accelerating step S250 that is used to arrive this main dehydration S260 with desired speed Tf-RPM basically.In order to arrive this main dehydration, promptly arrive main dewatering speed Tf-RPM, the rotating speed of cylinder should pass through transient oscillation region R 1 and irregular oscillation region R 2.As stated, transient oscillation region R 1 has the natural vibration characteristic by the structures shape of washing machine, and this zone is in the scope of about 200RPM to 350RPM.
Fig. 8 shows the curve map of the relation of expression quality and intrinsic frequency.Suppose that in the vibrational system of two washing machines two washing machines have quality m0 and m1 respectively, and maximum clothing saturation is Δ m respectively.Subsequently, can be the transitional region that Consideration is confirmed these two washing machines with Δ nf0 and Δ nf1 respectively.In this case, with the moisture that puts aside in the clothing.
Simultaneously, with reference to Fig. 8, the scope of transitional region of washing machine with less quality m1 is bigger than the washing machine with big quality m0.That is, when the variation of laundry amounts was taken into account, along with the quality of vibrational system diminishes, it is big that the scope of transitional region becomes.
To assess the scope of transitional region of washing machine of washing machine and the present embodiment of prior art now.
The washing machine of prior art has such structure: in this structure, the vibration meeting is delivered to steel ladle and causes the steel ladle vibration from cylinder.Therefore, consider the vibration of the washing machine of prior art, steel ladle is indispensable.Yet steel ladle not only has the weight of itself usually, also has a plurality of entity counterweight portions (substantial weight) that are used for balance in its front portion, rear portion or peripheral surface.Thus, the washing machine of prior art has big vibrational system quality.
In contrast be, in the washing machine of present embodiment,, but also separate by supporting construction and cylinder because steel ladle not only do not have counterweight portion, therefore when the vibration of consideration cylinder, can steel ladle not counted.Therefore, the washing machine of present embodiment can have relatively little vibrational system quality.
Therefore, with reference to Fig. 8, the washing machine of prior art has quality m0, and the washing machine of present embodiment has quality m1, finally makes the washing machine of present embodiment have bigger transitional region.
In addition, if consider the moisture in the clothing simply, the Δ m among Fig. 8 will become bigger, cause the difference of scope of transitional region bigger.And, because in the washing machine of prior art, even water is deviate from from clothing along with the cylinder rotation, water also can fall into steel ladle from cylinder, thereby the quality of the water that reduces through dewatering is less.Owing to consider vibration factor, the steel ladle and the cylinder of the washing machine of present embodiment are isolated from each other, and the water of deviating from from cylinder immediately influences the vibration of cylinder.That is, compare with the washing machine of prior art, in the washing machine of present embodiment, the influence of the mass change of water is bigger.
For these reasons, although the washing machine of prior art has the transitional region of about 200~270rpm, can be identical according to the initial RPM (revolutions per minute) of the transient area of the washing machine of present embodiment with the initial RPM of the transient area of traditional washing machine.According to the termination RPM of the transient area of the washing machine of present embodiment can rise to greater than calculate through about 30% the numerical value that initial RPM is added this initial RPM RPM.For example, transient area calculate through about 80% the numerical value that initial RPM is added this initial RPM the RPM place finish.According to present embodiment, this transient area can comprise about 200 to 350rpm RPM band.
Simultaneously, can reduce imbalance through the oscillation intensity that reduces cylinder.For this reason, before the rotating speed of cylinder gets into transitional region, carry out average (spreading) clothing (step) that disperses, so that in cylinder, clothing is disperseed as much as possible.
Using under the situation of balancer, can consider a kind of like this method: the rotating speed of cylinder is through transitional region, is arranged on the unbalanced opposition side that movable body in this balancer is positioned at clothing simultaneously.Under this situation, preferably in the centre of transitional region, movable body is positioned at unbalanced opposite location just.
Yet, as indicated above, compare with the transient area of traditional washing machine, according to the relative broad of transient area of the washing machine of present embodiment.Therefore, even be with average dispersion steps or the ball balance (operation) of having implemented clothing at the RPM that is lower than transient area, but along with drum rotation speed process transient area, clothing still possibly be in disorder state, and perhaps balance maybe be malfunctioning.
Therefore, through before the transient area or simultaneously, in according to the washing machine of present embodiment, can implement once balance at least at drum rotation speed.Here, balance can be defined as cylinder and in a scheduled time slot, rotates with constant speed.This balance allows the movable body of balancer to be merely the opposite location that reduces unbalanced amount and arrive clothing, and amplification ground is said, reaches the effect that clothing on average disperses.At last, in drum rotation speed process transient area, implement balance, and can prevent to produce noise and vibration because of the expansion of transient area.
Here, when when drum rotation speed is implemented balance before through transient area, can in the RPM band different, implement balance with the RPM of conventional washer.For example, if transient area originates in 200RPM, then in being lower than the RPM band of about 150RPM, implement balance.Because the transient area of traditional washing machine with relative narrower, even implement balance being lower than under the RPM condition of about 150RPM, it is not difficult that drum rotation speed passes through this transient area yet.Yet; As indicated above; Washing machine according to present embodiment has wide relatively expansion transient area, if under RPM condition low as traditional washing machine, implement balance, then just may cause the position of movable body chaotic through implementing balance under the drum rotation speed of transient area.Therefore, when before drum rotation speed gets into transient area, implementing balance, compare, can improve according to the balance RPM of the washing machine of present embodiment with traditional washing machine.That is, if confirmed the initial RPM of transient area, then than calculate through about 25% the numerical value that deducts this initial RPM from initial RPM the higher RPM band of RPM implement balance.For example, the initial RPM of transient area is about 200RPM, then can be lower than being higher than 150RPM in the RPM band of 200RPM to implement balance.
In addition, between balance period, can measure unbalanced amount.That is this control method can further comprise the steps: in the unbalanced amount of balance period measurements, and amount of unbalance that records and the tolerable amount of unbalance that allows to improve drum rotation speed are compared.If the amount of unbalance that records then accelerates to drum rotation speed outside the transient area after balance less than the tolerable amount of unbalance.On the contrary, as the amount of unbalance that records is equal to or greater than the tolerable amount of unbalance, then can implement the average dispersion steps of clothing once more, and in the case, the tolerable amount of unbalance can be different from and allows the initial tolerable amount of unbalance that quickens.
According to inventor's of the present invention research, irregular oscillation region R 2 is regarded as the certain vibration characteristic of embodiments of the invention.This irregular oscillation always can not produce, and is likely generation relatively.Irregular oscillation takes place in the scope of about 400RPM to 1000RPM.
When the rotating speed of cylinder passed through transient oscillation region R 1 with irregular oscillation region R 2, big vibration took place in washing machine brokenly.Therefore, preferably, control part is the rotation of index drum suitably, passes through transient oscillation region R 1 and irregular oscillation region R 2 effectively to allow cylinder.Owing to proposed multiple suggestion to transient oscillation region R 1, so will omit detailed description here to transient oscillation region R 1.The control method of irregular oscillation region R 2 below will mainly be described.
In the present embodiment, the control method of irregular oscillation region R 2 comprises: step is confirmed in the irregular oscillation zone, is used for confirming the irregular oscillation region R 2 of washing machine; And equilibrium step, be used to carry out balance; The execution of this balance is through based on determined irregular oscillation region R 2, and makes cylinder rotate a scheduled time with predetermined balancing speed, to allow ball is positioned at the opposite location of non-equilibrium site.
Preferably, before the rotating speed of cylinder falls into irregular oscillation region R 2, when the rotating speed of cylinder is through irregular oscillation region R 2 and after the rotating speed of cylinder is through irregular oscillation region R 2 execution this equilibrium step at least once.This is because in the time in irregular oscillation region R 2, maybe irregular oscillation taking place, balanced ball possibly break away from from the equilbrium position.So also be because if ball is not positioned at the opposite location of non-equilibrium site, it is uneven that club becomes, and owing to imbalance bigger vibration possibly take place.Therefore; If before the rotating speed of cylinder falls into irregular oscillation region R 2, when the rotating speed of cylinder is through irregular oscillation region R 2 and after the rotating speed of cylinder is through irregular oscillation region R 2, carry out once balance at least, the vibration of the washing machine that then can reduce to cause because of contingent irregular oscillation.And; If at least equilibrium step of execution before the rotating speed of cylinder falls into irregular oscillation region R 2, in the rotating speed process irregular oscillation region R 2 of cylinder and after the rotating speed process irregular oscillation region R 2 of cylinder; Its favourable part is: when carrying out dehydration, water is removed from clothing, and can compensate the imbalance that the difference because of the dehydrating amount of clothing produces.
The rotating speed that will be described in cylinder below falls into before the irregular oscillation region R 2, performed equilibrium step each time when the rotating speed of cylinder is through irregular oscillation region R 2 and after the rotating speed of cylinder is through irregular oscillation region R 2.
The rotating speed that at first is described in cylinder falls into the balance of carrying out before the irregular oscillation region R 2 (first balance).
Preferably, before the rotating speed of cylinder falls into irregular oscillation region R 2, cylinder is remained on predetermined balancing speed B1-RPM (below be referred to as " first balancing speed ") scheduled time t1.In the case; Because before cylinder (rotating speed) falls into irregular oscillation region R 2; The opposite location that can ball relatively accurately be positioned at non-equilibrium site once more than, thereby can relatively accurately compensate imbalance, can avoid contingent irregular oscillation thus; And do not carry out the equilibrium phase ratio before falling into irregular oscillation region R 2 with the rotating speed of cylinder, even ball breaks away from from compensated position when cylinder is through irregular oscillation region R 2, still can reduce vibration.
Preferably, consider, the first balancing speed B1-RPM is chosen as makes ball to be balanced effectively from the structure angle of balancer.Ball is not all by balance effectively at each rotating speed of cylinder.If the rotating speed of cylinder is too small, counterbalance effect can variation.According to inventor's of the present invention research, when the rotating speed of cylinder was in the scope of about 200RPM to 800RPM, ball was by balance effectively.Especially, under the situation of low speed and constant speed, the ball quilt is balance effectively.
Therefore, preferably, the first balancing speed B1-RPM is selected from arbitrary rotating speed of 200RPM to 800RPM.More preferably, after the rotating speed process transient oscillation region R 1 of cylinder, the first balancing speed B1-RPM is selected from arbitrary rotating speed of 200RPM to 800RPM.This is because when the first balancing speed B1-RPM was selected from the speed in transient oscillation zone, ball may break away from from the equilbrium position owing to transient oscillation.
At last, if irregular oscillation region R 2 is in the scope of about 400RPM to 1000RPM, and transient oscillation region R 1 is in the scope of about 200RPM to 350RPM, and then preferably the first balancing speed B1-RPM is selected from the scope of about 350RPM to 400RPM.As the result of inventor's research of the present invention, the first balancing speed B1-RPM preferably is in the scope of 380RPM.And, preferably in (time) scope of 30 seconds to 60 seconds, keep the first balancing speed B1-RPM.
The balance of carrying out when next will be described in cylinder (second balance) through irregular oscillation region R 2.
Preferably, even in irregular oscillation region R 2, will cylinder remain on predetermined balancing speed B2-RPM (below be referred to as " second balancing speed ") scheduled time t2.This is because in irregular oscillation region R 2, irregular oscillation possibly take place, thereby in through irregular oscillation region R 2, ball possibly break away from from the equilbrium position.Therefore, preferably, in the rotating speed process irregular oscillation region R 2 of cylinder, make more than the balance execution once, so that allow ball accurately to be positioned at the opposite location of non-equilibrium site.
Preferably, consider, the second balancing speed B2-RPM is chosen as makes ball can be balanced (200RPM to 800RPM) effectively from the structure angle of balancer.Thus, if irregular oscillation region R 2 is in the scope of about 400RPM to 1000RPM, then the second balancing speed B2-RPM is preferably selected from the scope of about 400RPM to 800RPM.As the result of inventor's research of the present invention, second balancing speed preferably is in the scope of 600RPM, and this scope is corresponding to the by-level of irregular oscillation region R 2.
Next, will be described in the balance (the 3rd balance) of rotating speed through carrying out after the irregular oscillation region R 2 of cylinder with reference to Fig. 6.
In the present embodiment, after cylinder is through irregular oscillation region R 2, cylinder is remained on predetermined balancing speed B3-RPM (below be referred to as " the 3rd balancing speed ") scheduled time t3.This is because when the rotating speed of cylinder through irregular oscillation region R 2 time; Balanced club is redistributed owing to the irregular oscillation that takes place in the irregular oscillation region R 2; Thereby after the rotating speed process irregular oscillation region R 2 of cylinder, ball possibly break away from from the equilbrium position.In other words,, make more than balance carries out once if after the rotating speed of cylinder is through irregular oscillation region R 2, then when cylinder when main dehydrating speed Tf-RPM or main dehydrating speed place are accelerated, can stably compensate imbalance, thereby can reduce to vibrate.
After the rotating speed of cylinder was through irregular oscillation region R 2, can the 3rd balancing speed B3-RPM be chosen as should a specific speed, promptly greater than the rotating speed of the rotating speed of irregular oscillation region R 2.Yet, in the case, may not carry out balance effectively.Therefore, preferably, consider, the 3rd balancing speed B3-RPM is chosen as makes that ball can be by balance effectively from the structure angle of balancer.In this respect, if irregular oscillation region R 2 is in the scope of about 400RPM to 1000RPM, then the 3rd balancing speed B3-RPM is preferably selected from the scope of about 400RPM to 800RPM.In other words, preferably, after the rotating speed of cylinder is through irregular oscillation region R 2, make cylinder be decelerated to the 3rd balancing speed B3-RPM carrying out balance, and cylinder is accelerated to reach main dehydrating speed Tf-RPM subsequently.
In the case, the rotating speed of cylinder passes through irregular oscillation region R 2 once more.According to inventor's of the present invention research, consider from the angle that reduces to vibrate, do not carry out the 3rd balance and be only effectively.In other words, the dehydration irregular oscillation does not always occur, and when as one man water being removed from clothing with dewatering cycle, the weight of clothing reduces, and also can reduce imbalance.Therefore,, and make cylinder accelerate to balance once more subsequently, the possibility that makes irregular oscillation is reduced if after the rotating speed process irregular oscillation region R 2 of cylinder, cylinder is slowed down.
And, for the 3rd balance,, accelerate to again and reach main dehydrating speed Tf-RPM if cylinder is decelerated to after the 3rd balancing speed B3-RPM, then can shorten the required time of main dehydration.In other words, even under the situation about after cylinder being decelerated to the 3rd balancing speed B3-RPM, quickening again, when having defined the target water content of clothing, promptly can carry out dehydration.Therefore, can shorten the required time of main dehydration S260.Usually, issuable problem is if cylinder can cause vibration with the high speed rotation.Yet, carry out the required time of main dehydration S260 owing to can shorten with maximum speed by cylinder, therefore can reduce vibration.In other words; As result of study and since with the 3rd balance after when the rotating speed of cylinder pass through irregular oscillation when regional contingent vibration compare, the vibration that in main dehydration S260, takes place more possibly cause problem; Therefore effectively, the 3rd balance has stoped the generation of vibration.
Simultaneously, as the result of inventor's research of the present invention, noticed that it is preferred that the 3rd balancing speed B3-RPM hangs down, but it should be higher than 350RPM, so that it can not be in the scope in transient oscillation zone once again.More preferably, noticed that the 3rd balancing speed B3-RPM is 380RPM, identical with the first balancing speed B1-RPM.In other words, preferably, noticed at process irregular oscillation zone (T m-RPM) afterwards, the rotating speed of cylinder is decelerated to the first balancing speed B1-RPM, and remains on subsequently after the first balancing speed B1-RPM, one preset time, accelerate to reach main dehydrating speed T f-RPM.
Simultaneously, as shown in Figure 7, after through irregular oscillation region R 2, the rotating speed of cylinder can keep predetermined constant speed T m-RPM one preset time t4, and directly be not decelerated to the 3rd balancing speed B3-RPM.In the case, when the rotating speed of cylinder kept preset time t4 under predetermined constant speed Tm-RPM, the moisture in the clothing can reduce manyly.Therefore, the rotating speed when cylinder is in the main dehydrating speed T corresponding with maximum speed fIn the time of in the scope of-RPM, can further reduce the rotating speed of cylinder.As a result of, its advantage is to reduce the vibration that causes because of high rotating speed.
It will be readily apparent to one skilled in the art that and to make various changes and the modification that does not deviate from aim of the present invention or scope in the present invention.Therefore, if this type change and modification fall within the scope of the claims of enclosing and equivalent thereof, then the present invention is intended to contain these changes of the present invention and modification.

Claims (19)

1. control method that comprises the washing machine of balancer, this control method comprises:
Be configured to be used for confirming the regional step of irregular oscillation of washing machine; And
Equilibrium step, before the rotating speed of cylinder gets into this irregular oscillation zone, in this this irregular oscillation zone of rotating speed process, and after this this irregular oscillation zone of rotating speed process, this equilibrium step is performed at least once.
2. control method according to claim 1; Wherein, If in being lower than the RPM band of transient area, produce maximum or bigger cylinder displacement, perhaps in being higher than the RPM band of this transient area, produce the maximum or bigger cylinder displacement of stable state step, then confirm to have produced this irregular oscillation zone.
3. control method according to claim 2, wherein, this irregular oscillation produces in being higher than the RPM band of this transient area.
4. control method according to claim 1, wherein, this irregular oscillation produces in the RPM of 350RPM to 100RPM band.
5. control method according to claim 1; Wherein, If produced the average cylinder displacement in the transient area, produced average cylinder displacement in this transient area+displacement in 20% to-20% the scope, or produced 1/3 displacement more than or equal to the maximum cylinder displacement in the intrinsic frequency of this transient area, then confirm to have produced irregular oscillation.
6. control method according to claim 1 wherein, before the rotating speed of this cylinder falls into this irregular oscillation zone, is carried out the step that makes the ball balance.
7. control method according to claim 6, wherein, in the said step that makes the ball balance, balancing speed is maintained at the arbitrary value between the 350rpm to 400rpm.
8. control method according to claim 6, wherein, in the said step that makes the ball balance, balancing speed is maintained at 380rpm.
9. control method according to claim 1 wherein, in this irregular oscillation zone of rotating speed process of this cylinder, is carried out the said step that makes the ball balance.
10. control method according to claim 9, wherein, in the said step that makes the ball balance, balancing speed remains at least a rotating speed of 350rpm to 1000rpm.
11. control method according to claim 10, wherein, in the said step that makes the ball balance, balancing speed is maintained at 600rpm.
12. control method according to claim 1 wherein, after this irregular oscillation zone of rotating speed process of this cylinder, is carried out the said step that makes the ball balance.
13. control method according to claim 12, wherein, in the said step that makes the ball balance, balancing speed is chosen from the velocity band that is suitable for balance.
14. control method according to claim 13 wherein, is carried out the said step that makes the ball balance through at least a rotating speed that the rotating speed that makes this cylinder falls between the 200rpm to 800rpm.
15. control method according to claim 14 wherein, becomes 380rpm through the rotating speed that makes this cylinder and carries out the said step that makes the ball balance.
16. control method according to claim 14 wherein, after this irregular oscillation zone of rotating speed process of this cylinder, makes this cylinder rotate a scheduled time with constant rotational speed.
17. control method according to claim 1, wherein, this washing machine comprises driver element, and this driver element comprises: axle is connected to cylinder; Bearing housing is in order to rotatably to support this axle; And motor, in order to rotate this axle; And this washing machine comprises a mounting assembly that is connected to this driver element.
18. control method according to claim 1, wherein, this washing machine comprises the back liner, and it is used for sealing preventing that washings from spilling from the space between driver element and the steel ladle, and is used to make this driver element to move with respect to this steel ladle.
19. control method according to claim 1 wherein, is compared with the cylinder that is supported by mounting assembly, steel ladle is supported more rigidly.
CN2010800429479A 2009-08-27 2010-08-27 Control method of laundry machine Pending CN102686789A (en)

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KR1020090079912A KR101741549B1 (en) 2009-08-27 2009-08-27 Laundry machine and method for controlling the same
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