CN1179078C - Centrifugal dehydrator - Google Patents

Abstract

The object of the invention is to surely prevent abnormal vibrations/noises at the time of dehydration. The technique solution of the invnetion is, when the detected quantity of eccentricity exceeds a prescribed value and an eccentric position is located near a position facing at 180 DEG, a balancer provided at one part on the inner peripheral wall surface of drum, weight is increased by pouring water into this balancer, and the balance of drum is controlled. When pouring water, first of all, water just corresponding to the wight of eccentric quantity A1*times (4/9) is poured into the balancer (S62), afterwards, the eccentric quantity is detected again and when this eccentric quantity is less than A1*times (1/3), water pouring is completed (S63). When this eccentric quantity exceed A1*times (1/3), water just corresponding to the weight of A1*times (1/9) is additionally poured into the balancer (S64).

Description

Centrifugal dehumidifier

Technical field

The present invention relates to washings is housed in the inside of cage shape cylinder, making this cylinder make the center high speed rotary with trunnion axis carries out the washings dehydration or cleans the centrifugal dehumidifier (centrifugal dewatering device that wherein also comprises solvent, general designation is made " centrifugal dehumidifier ") that takes off liquid with solvent.Certainly, the present invention can be used in and carry out continuously by washing dehydration, arrives dry washing machine or scrubbing-and-drying unit again.

Background technology

Cylinder centrifugal dehydrator is exactly that the washings after cleaning is housed in cage shape cylinder inside, and making this cylinder is high speed rotating structure in center with the trunnion axis.One of big problem of this centrifugal dehumidifier is when making the cylinder high speed rotary exactly, because of abnormal vibrations and abnormal sound take place for the imbalance of Mass Distribution around the gyroaxis under the unequal state that is dispersed on the cylinder internal perisporium face of washings.Have in the commercially available drum-type washing drying machine of such centrifugal dehumidifier in collocation,, weight is installed around the water jacket of interior dress cylinder for suppressing above-mentioned abnormal vibrations.Therefore, this scrubbing-and-drying unit weight in past becomes and weighs very much, make that the place is set is restricted, moves simultaneously or also difficulty of carrying.

To solve above-mentioned problem of abnormal vibration, several cylinder centrifugal dehydrators have been proposed always as purpose.For example open in the centrifugal dehumidifier of putting down in writing in the flat 6-254294 communique, disclosed before the dehydration running of carrying out the cylinder high speed rotary, make the method for the impartial decentralized configuration of washings on cylinder internal perisporium face by the revolution of cylinder low speed the spy.Be exactly in more detail, at first make the revolution of cylinder utmost point short time low speed, then with than this speed of gyration the speed of gyration during hurry up but than the dehydration running fully slow speed of gyration make the cylinder revolution, by the combination of this two-stage revolution control, seek the dispersion of washings.

In this prior art, as the means that detect the inner washings biasing of cylinder, pedestal at device partly is provided with the vibration monitoring sensor, when the speed of gyration that makes cylinder rises to the high speed rotary speed of the running of dewatering, in case this vibration monitoring sensor will reduce speed of gyration to abnormal vibrations.

But even adopt the such cylinder revolving-control method of above-mentioned prior art, also may not slowing down by a cylinder, washings is impartial to be disperseed with regard to making really in revolution.Thereby, after attempting making the washings dispersion, making the cylinder high speed rotary by the revolution of cylinder low speed, the occasion of abnormal vibrations still takes place in this moment, and the speed of gyration recast that must reduce cylinder once more disperses washings.So, if repeatedly carry out the revolution of cylinder low speed repeatedly, will prolong dewatering time to disperse washings and to detect the non-central load that the cylinder high speed rotary causes.

And, in above-mentioned seeking the washings equalization is dispersed in the cylinder in the method on week, when in cylinder, only accommodating the heavier clothing such as (as artificial silk) of 1 weight, can not realize impartial the dispersion, can not suppress abnormal vibrations.

Therefore, for example in the fair 7-100095 communique of spy, disclosed at the additional weight of the part of cylinder internal perisporium and carried out the centrifugal dehumidifier that balance is adjusted.In this existing centrifugal dehumidifier, when weight arrives the cylinder extreme higher position,, then judge into both balances if washings is in position with respect to cylinder gyroaxis and weight subtend because of gravity, just cylinder is turned round the high speed dewatering of dividing a word with a hyphen at the end of a line by low speed and turn round.But according to the method, under the state of weight and the certain balance of washings, therefore the high speed dewatering of also may not dividing a word with a hyphen at the end of a line revolution can not prevent abnormal vibrations fully when the dehydration running.In addition, by the weight of weight the washings of predetermined weight to be housed in the cylinder to make it balance be possible though satisfy, and it is unpractical being made in the actual centrifugal dehumidifier like this.

Supervise in the problems referred to above, the application's applicant is in the middle of the spy is willing to flat 8-354520 grade, a kind of centrifugal dehumidifier of new structure has been proposed, this device is the liquid maintaining part that can temporarily keep the bag shape of water in a formation of cylinder baffle plate, carries out all balance adjustment of cylinder by injecting this liquid maintaining part with the corresponding a certain amount of water of the biasing of washings.In this novel centrifugal dehumidifier, when the adjustment of non-central load relative equilibrium is in the certain position that is determined with the liquid maintaining part, will by the big young pathbreaker of this non-central load with it the water of the Sq of balance inject in this liquid maintaining part, take this balance that realizes that cylinder is all.

But though the washings in the cylinder sucked the water of volume before the dehydration beginning, when the high speed dewatering revolution made aqueous dispersion, the weight of washings lightened, and makes the size variation of non-central load.In addition, even before the high speed dewatering revolution of dividing a word with a hyphen at the end of a line,, so make the size variation of non-central load also because for the slow revolution of cylinder of eliminating non-central load makes that contained water some is emitted in the washings.Therefore, although before the dehydration beginning, adjust, also worry when high speed dewatering turns round, to take place vibration and noise for eliminating non-central load.

Summary of the invention

The present invention does further improvement to above-mentioned novel centrifugal dehumidifier, its purpose is, provide a kind of by the liquid of Sq being injected the liquid maintaining part of balance adjustment usefulness, even in the occasion that makes the size variation of non-central load because of dehydration, also can positively suppress to vibrate centrifugal dehumidifier with noise.

For solving the centrifugal dehumidifier of the present invention that above-mentioned problem is finished, be that washings is housed in the cylinder of cage shape, making the trunnion axis of this cylinder is center steering, takes this to carry out the centrifugal dehumidifier of the dehydration of this washings, it is characterized in that possessing

A) by ducted body liquid maintaining part that forms of cylinder wall and to this maintaining part inject balance adjusting device that the fluid infusion apparatus of liquid constitutes,

B) detect the cylinder non-central load size and location the non-central load checkout gear and

C) also big and position this non-central load is the occasion of closely being close to the position of aforesaid liquid maintaining part subtend on cylinder internal perisporium face to the size of the non-central load that is detected by above-mentioned non-central load checkout gear under the state before liquid injects the aforesaid liquid maintaining part than setting, serves as the control device that the basis determines to have considered the reservoir quantity rear drive aforesaid liquid injection device of the water absorption rate of washings or dehydration rate with the size of this non-central load.

The centrifugal dehumidifier of the invention described above does not inject at liquid under the state of liquid maintaining part, and self does not have non-central load cylinder, and when by fluid infusion apparatus liquid being injected the liquid maintaining part, cylinder self has and the corresponding non-central load of the amount of this liquid.

Above-mentioned non-central load checkout gear does not at first import under the state of liquid maintaining part at liquid, i.e. during state that non-central load is only caused by the biasing of washings, detect the size and the position of this non-central load.This non-central load checkout gear can be taked following formation, when for example cylinder is better than the speed of gyration revolution of gravity with the centrifugal force that acts on washings, by the change detection non-central load of the drive current that turns round the motor that drives this cylinder.

The size of the non-central load that is detected is more than the setting, and the position of this non-central load is the occasion of closely being close to the position of liquid maintaining part subtend on cylinder internal perisporium face, and the balance that is obtained cylinder by balance adjusting device is possible.Reduce because washings is accompanied by dehydrated weight,, at first drive fluid infusion apparatus, make the liquid of the amount suitable inject the liquid maintaining part with the weight also littler than the size of the non-central load that detects so control device presupposes the water absorption rate or the dehydration rate of washings.Thereby, before cylinder high speed dewatering revolution, the weight ratio of liquid maintaining part is little by the non-central load that the biasing of washings causes, and the balance of cylinder is not best state, but be accompanied by the carrying out of washings dehydration, just towards balance and near the direction variation of optimum state.

In addition, under the state of the non-central load balance that the biasing of the weight that makes liquid injection portion and washings causes, in order to suppress vibration and noise really, it is good that employing possesses constituting of following such rotation control device: above-mentioned non-central load checkout gear injects the size that detects the cylinder non-central load under the state of aforesaid liquid maintaining part once more at liquid, be in second setting when following in the size of this non-central load, this rotation control device control revolution drives the motor of this cylinder, and cylinder is turned round with dehydration speed of gyration at a high speed.

And, above-mentioned control device adopts following formation better, when the size of non-central load is bigger than second setting after liquid injects the aforesaid liquid maintaining part, drive the aforesaid liquid injection device up to becoming this below second setting in order to append injection liquid repeatedly.

In the centrifugal dehumidifier of above-mentioned preferred formation, begin the liquid of less weight is injected the liquid maintaining part, judge whether to arrive desirable eccentric state by the size that detects non-central load then, during the insufficient infusion of liquid, slightly liquid is appended again at every turn and be injected into the liquid maintaining part, investigate the size of non-central load at every turn.Thereby the liquid that will not cross volume injects the liquid maintaining part, just can be according to desirable state near the preceding offset of high speed dewatering revolution.

Moreover the water absorption rate of the washings generally kind because of fiber is different with weave etc.Thereby, in the centrifugal dehumidifier of the invention described above, wish most the water absorption rate (or dehydration rate) of actual washings of accommodating in the cylinder is considered.Therefore, can adopt with following formation: further possess the setting device according to user's the desirable washing procedure of operating and setting, above-mentioned control device is calculated water injection rate according to above-mentioned water absorption rate of washing procedure correction or the dehydration rate set by this setting device.

By above-mentioned setting device, when for example selecting felt (cloth group) washing procedure by the user, control device is calculated reservoir quantity with regard to the supposition big rate of suction bigger than the washings of standard.Take this, can more positively infer the water absorption rate of washings, washing weight reduces suitable suitable balance adjustment in the time of therefore can carrying out with dehydration.

According to centrifugal dehumidifier of the present invention, when non-central load is present on the cylinder internal perisporium face subtend position that becomes 180 ° with the liquid maintaining part and closely is close to, make the liquid of the weight that washing weight reduces when having considered dehydration inject this liquid maintaining part, the running of after all offsets of cylinder diminish, dewatering.Therefore,, kept all balances of cylinder, can positively suppress the generation of abnormal vibrations and noise though residual some non-central loads before the dehydration running is divided a word with a hyphen at the end of a line are followed dehydration to carry out offset and further reduced.

Description of drawings

Fig. 1 is the side sectional drawing of tumbling-box washing machine that possesses the centrifugal dehumidifier of the embodiment of the invention.

Fig. 2 is the back perspective view of Fig. 1 washing machine major part.

Fig. 3 is that expression is to the balancer water filling of this enforcement centrifugal dehumidifier, the ideograph of hull-borne.

Fig. 4 is the electrical system square frame pie graph of present embodiment centrifugal dehumidifier.

Fig. 5 is the figure of the example of motor current change that causes of the influence of expression non-central load.

Fig. 6 is the figure that concerns an example between expression offset and the motor current change amplitude.

Fig. 7 be in the expression present embodiment when running dehydration to the flow chart of control action.

Fig. 8 is the flow chart of the control action when dehydration is turned round in this example of expression.

Fig. 9 is the flow chart of the control action when dehydration is turned round in the expression present embodiment.

Figure 10 is the ideograph of washings mobile status in the expression present embodiment intermediate roll.

Symbol description

10 control parts, 11 central control parts

12 speed of gyration control parts, 13 non-central load test sections

14 water filling control parts, 21 motor driving parts

22 motor current test sections, 23 rotary sensors

38 cylinders, 46 balancers

72 balances water injection valve 74 water filling nozzles

The specific embodiment

Embodiment

Followingly describe with reference to the embodiment of accompanying drawing to centrifugal dehumidifier of the present invention.Be the structure that base description possesses the tumbling-box washing machine of centrifugal dehumidifier of the present invention embodiment at first with Fig. 1 and Fig. 2.Fig. 1 is the side sectional drawing of this washing machine, and Fig. 2 is the back perspective view of this tumbling-box washing machine major part of expression.

In the inside of outer container 30, water jacket 32 is hung and is supported on spring 34 and the shock absorber 36, and in water jacket 32 inside, 38 on the cylinder of accommodating washings is supported on the main shaft 40.Be provided with a plurality of limberss 42 on the perisporium of cylinder 38, the water that is given in the water jacket 32 flow in the cylinder 38 by this limbers 42, and the water of being deviate from by washings in cylinder 38 disperses to water jacket 32 by limbers 42 on the contrary.

On the interior week of cylinder 38, the position of per 90 degree angles of revolution is provided with 4 baffle plates 44 of following revolution that washing is stirred up altogether.Double its inner balancer 46 that keeps water that is made in this baffle plate 44.Be provided with water guide chamber 48 at the back side of cylinder 38, it does the center with main shaft 40, and is roughly in the form of annular discs, and in interior all sides of circumference big water filling opening 50 is arranged.In this water guide chamber 48, form the hand-hole 52 is communicated with balancer 46 in cylinder 38 1 sides, with respect to main shaft 40 and this water injection hole 52 180 outer groove 32 1 sides of spending subtends roughly, formation osculum 54.In the front of outer container 30, the lid 56 that the front openings of external groove 32 opens and closes is set, open this lid 56 washings is accommodated cylinder 38 inside.

Main shaft 40 is kept by the bearing 58 that is contained on the water jacket 32, at its front end main pulley 60 is installed.Configuration motor 62 below water jacket 32, the rotary driving force of motor 62 conveys to main pulley 60 by motor belt pulley 64, vee-belt 66.In addition, by the water of supply admission ports 68 such as outside water channel bolt, when being injected in the water jacket 32, also emit by the water filling spray 74 that is located on the water jacket 32 with water injection valve 72 by balance by water-supply valve 70.On the other hand, remain in the water in the water jacket 32, be discharged to the outside by the water discharge outlet 78 that opens and closes by draining valve 76.1 position of ring part on circumference at main pulley 60 is provided with opening, clipping the both sides configuration illuminating part 801 and the light accepting part 802 of this ring part.Take this, during 38 1 weeks of revolution of cylinder, the light that is sent by illuminating part 801 only has 1 time by opening arrival light accepting part 802.Rotary sensor described later is subjected on the basis of optical signal at this, the detection signal (revolution sign) that output is synchronous with the revolution of cylinder 38.

Below, describe in detail with the water filling and the draining of the above-mentioned balancer 46 of Fig. 3 subtend.Fig. 3 is the ideograph of expression balancer 46 and water guide chamber 48 operating states.When turning round more than the speed of gyration of cylinder 38 with regulation, water is in case emitted by water filling nozzle 74.The water of emitting just enters water guide chamber 48 by water filling opening 50, while pass to rear surface etc. locate because of centrifugal force to the periphery side shifting.Then, shown in Fig. 3 (a), water attaches the periphery wall inboard that remains on water guide chamber 48 because of centrifugal force.Because water filling opening 50 areas are big, so even disperse because of water pressure fluctuations etc. causes the water of being emitted by water filling nozzle 74 to fall direction, its major part also flies in the water guide chamber 48 really.

Balancer 46 is made for the big ducted body that also more leans on outer circumferential side with respect to main shaft 40 than water guide chamber 48.Therefore, the water that injects water guide chamber 48 enters balancer 46 inside because of centrifugal force by water injection hole 52, and shown in Fig. 3 (b), attaching the periphery wall side that remains on balancer 46 is on the internal perisporium face of cylinder 38.And also opening of osculum 54 on the outer circumferential side of water guide chamber 48, water is overflowed by water guide chamber 48 by this osculum 54, but its displacement is more few with the water yield of injecting water guide chamber 48.

When remaining in water in the balancer 46 and discharge, the extreme higher position of balancer 46 on the revolution circumference stopped and remaining on this position.So, because acting on the centrifugal force of the water in the balancer 46 disappears, so shown in Fig. 3 (C), water flows out to water guide chamber 48 by water injection hole 52, the water that accumulates in the bottom of water guide chamber 48 flows out to water jacket 32 by the osculum 54 that is in extreme lower position on the revolution circumference just.The aperture area of water injection hole 52 and osculum 54 is little, but as long as temporary transient through balancer 46 is remained on above-mentioned position, the water in balancer 46 and the water guide chamber 48 just is discharged in the water jacket 32 fully.

Following electric formation and the action that relevant centrifugal dehydration in the above-mentioned washing machine is described with reference to Fig. 4.With the micro computer is that the control part 10 that the center constitutes is made of central control part 11, speed of gyration control part 12, non-central load test section 13 and water filling control part 14.Central authorities' control part 11 comprises the memory of the running program of storing the running of dewatering in advance, got the information of the size and location of relevant non-central load by non-central load test section 13, carry out processing described later, will indicate to speed of gyration control part 12 with the speed of gyration of the corresponding motor 62 of desirable cylinder speed of gyration.

Speed of gyration control part 12 makes motor 62 remain on indicated speed of gyration with motor driving part 21 actions.When motor 62 uses induction type motor, commutator motor etc. to control the motor of speed of gyration by phase controlling, the speed of gyration information of the now that speed of gyration control part 12 is got based on indicated target speed of gyration with by rotary sensor 23, calculate phase control angle, pass and motor driving part 21.Motor driving part 21 for example comprises the paraphase control loop, according to pass and phase control angle make the switch element ON/OFF, with resulting drive current supply motor 62.

Motor current test section 22 detects the drive current that flows through in the motors 62, passes and non-central load test section 13 after being transformed into voltage value.Fig. 5 is the figure that shows an example of motor current change.Among the figure, revolution sign M is the sign of the signal of 38 1 gyration periods of cylinder of being obtained by above-mentioned rotary sensor 23 based on expression.When having non-central load in cylinder 38, as shown in Figure 5, motor current has and the corresponding variance components of this non-central load.The change of this motor current is corresponding with the load torque change of motor 26, and the peak-peak of motor current occurs when the internal loading moment of torsion is maximum during 38 1 weeks of revolution of cylinder.In addition, the change amplitude L of motor current and the size of non-central load, promptly offset is corresponding.Fig. 6 is display eccentric amount and the figure that changes an example that concerns between the amplitude L.Investigate this relation in advance and be stored in the memory, just can obtain offset by change amplitude L.But because the variable of motor current not necessarily only is non-central load, so, preferably carry out the filter process that variance components by motor current only takes out the frequency content that cylinder 38 speeds of gyration closely are close in order to detect the variance components depend on non-central load accurately.

Non-central load test section 13, when the signal of input motor current variance components shown in Figure 5, detection peak-peak and minimum peak in during each of revolution sign M is per 1 revolution of cylinder 38 at interval, calculate poor (the change amplitude L) of this maximum and minimum peak then, obtain eccentric size (offset) with reference to the relation as shown in Figure 6 of being stored in the memory.In addition, the timing that is occurred by peak-peak (for example by before revolution sign M time delay) detects the position of non-central load on cylinder 38 internal perisporium faces.

Referring now to the control sequence when the dehydration stroke of the washing machine of the above-mentioned formation of flowchart text of Fig. 7～Fig. 9.In the following description, what exemplify is numerical value when diameter of cylinder is taken as 470mm, but can be bright be that in the different occasion of diameter of cylinder, the numerical value by suitable each speed of gyration of change can access corresponding result.

When cleaning stroke end dehydration stroke began, the washings of cylinder 38 inside was in the state that heavily amasss in the bottom as shown in Figure 1.This moment, water did not inject balancer 46 completely, and self does not have non-central load cylinder.

When the user was begun by operating portion 20 indication dehydration strokes, motor 62 startings were carried out non-central load and are detected revolution (step 1).At this moment, cylinder 38 turns round towards a direction with the also fast some speed of gyration N1 (for example about 80rpm) of the speed of gyration more balanced mutually than centrifugal force that acts on washings and gravity.

Because above-mentioned revolution, all washings turns round with the state that is pressed in cylinder 38 internal perisporium faces shown in Figure 10 (b) because of centrifugal force.Washings produces the change of motor current as shown in Figure 5 when cylinder 38 internal perisporium face upper offsets, detect offset and eccentric position (step S2) as described above by non-central load test section 13.

Then, judge by central control part 11 whether offset is (step S3) below the setting a.Step S3 judges that offset is setting a when following, carries out directly under this state that the dehydration running is vibrated and noise also is little even then can be judged as.Therefore, enter step S7, make the speed of gyration of cylinder 38 rise to the high speed rotary speed N2 of regulation.Take this, be soaked in water in the washings because of the centrifugal force dehydration of dispersing.Wherein, high speed rotary speed N2 can be decided to be about 1000rpm; but, preferably it is limited in and the corresponding higher limit of the washing procedure of user's appointment (for example felt washing procedure, dry special-purpose clothing class washing procedure etc.) in order to protect the washings of easy generation cloth damage.

Above-mentioned steps S3 judges when offset is bigger than setting a, judges then whether eccentric position spends in the prescribed limit of closely being close to the subtend positions (step S4) at balancer 46 180.This prescribed limit is to have considered the detection error etc. of eccentric position, facing to main shaft 40, is that the center is set with suitable width with the rotary position with balancer 46 180 degree subtends.When this step S4 judged that eccentric position is in prescribed limit, then can be judged as can be by carrying out the balance adjustment that cylinder 38 is carried out in water filling to balancer 46.Therefore, enter step S6 and carry out balance water filling running described later, the running of dewatering after averaging out.

If above-mentioned steps S4 judges when eccentric position closely is not close in balancer 46 subtend positions, can not carry out the balance adjustment that utilizes balancer 46.Therefore, carry out washings described later and untie running (step S5), seek the impartial decentralized configuration of washings on the cylinder 38 internal perisporium faces, and then carry out the detection of non-central load.

Fig. 8 is the flow chart of untiing revolution control when turning round of expression above-mentioned steps S5.In untiing running, turning round of cylinder 38 stopped or being reduced to the degree (step S51) that almost stops.Then, speed of gyration (for example about 55rpm) the direction revolution (step S52) left when making cylinder 38 with the cleaning stroke makes the gyratory directions counter-rotating then, makes cylinder 38 to right revolution (step S53) with same speed.Then, counter-rotating finishes to untie running up to through the stipulated time (step S54) about repetition.Take this, by Figure 10 (C) cylinder that is shown in 38 inner agitator treating things, owing to enter air in the gap of each washings, institute is so that the washings that twines leaves, and a part washings is easy to separation mutually.Therefore, when then turning back to speed of gyration that S1 makes cylinder 38 and rise to low speed speed of gyration N1 by step S5, shown in Figure 10 (d), the washings of separation is easy to impartial dispersion the on the internal perisporium face of cylinder 38, and offset is received into the following possibility of setting a and uprises.

Fig. 9 is the flow chart that an example is controlled in the balance water filling running of the above-mentioned steps S6 of expression feature of the present invention.In balance water filling running, at first, make the speed of gyration of cylinder 38 rise to middling speed speed of gyration N3 (step S61).Middling speed speed of gyration N3 is set at the also fast speed than low speed speed of gyration N1, makes the water that injects water guide chamber 48 by water filling nozzle 74 be attached to really on the periphery internal face of this water guide chamber 48 because of centrifugal force.In addition, middling speed speed of gyration N3 preferably is set at than the speed of gyration by the low scope of the resonance point of decisions such as cylinder 38 own wts.Middling speed speed of gyration N3 is set at when higher than resonance point and since inject to balancer 46 water with the speed of gyration of front roll 38 by this resonance point, therefore can not bring into play the effect of balancer 46.In addition, because of resonance point also by the washing weight of accommodating in the cylinder 38 change, increase so also be necessary to consider the weight of the washings that causes because of suction.For example when diameter of cylinder was 470mm, resonance point was about 200rpm, therefore preferably the middling speed speed of gyration was set in the degree of 130rpm.

In central control part 11, be estimated as because the weight of dehydration washings reduces to 2/3, to consider that further the surplus that this weight that washings kinds of fibers etc. causes reduces the fluctuation of degree is taken as 2/3, the offset A1 that detects based on non-central load test section 13 calculates initial stage water filling weight B by following formula (1) earlier.

B＝A1×(2/3)×(2/3)＝A1×(4/9)…(1)

Thereby when being taken as 900g as if offset A1, initial stage water filling weight B then is 400g.

If the speed of gyration of cylinder 38 arrives middling speed speed of gyration N3, then water filling control part 14 makes balance open with water injection valve 72, emits water (step S62) with above-mentioned initial stage water filling weight B a great deal of by water filling nozzle 74.For example, supply with the flow of water and will be such the constituting of setting can being not limited to by the flow set that discharges water of water filling nozzle 74 to admission port 68, calculate open hour of water injection valve 72, only open water injection valve 72, locking then in these open hour by this discharge water flow and initial stage water filling weight B.And, preferably set up flow sensor etc. at constituting that the flow that discharges water by water filling nozzle 74 changes because of the discharge of supplying with admission port 68.As previously mentioned, the water of being emitted by water filling nozzle 74 enters balancer 46 by water guide chamber 48, remains on balancer 46 inside owing to centrifugal force with the state that is attached on the cylinder 38 internal perisporium faces.

When above-mentioned initial stage water filling finished, the offset A2 that biasing determined that non-central load test section 13 detects by balancer 46 and washings judged by central control part 11 whether this offset A2 is A1 * (1/3) following (step S63).This step S63 judges that offset A2 is that A1 * when (1/3) was following, because the running of dehydration thereafter, the dehydration of washings further made weight reduce, and offset is diminished more, so be judged as abnormal vibrations and abnormal sound can not take place.Therefore, finish balance water filling running, the dehydration running of the above-mentioned steps of dividing a word with a hyphen at the end of a line S7.

On the other hand, above-mentioned steps S63 judges when offset A2 surpasses A1 * (1/3), then is judged as the water injection rate deficiency to balancer 46.Append water filling weight C by calculating then, and put the water (step S64) that appends water filling weight C a great deal of with this with following formula (2).

C＝A1×(1/3)×(1/3)＝A1×(1/9)…(2)

After this appends water filling action, detect offset A3 once more, judge that whether offset A3 is A1 * below (1/3).Thereby, by the processing of step S63～S64, repeat to balancer 46 water fillings with the amount suitable with appending water filling weight C at every turn, become A1 * below (1/3) up to the offset that detects constantly at this.If become A1 * below (1/3), just finish balance water filling running, dividing a word with a hyphen at the end of a line dehydration running at the offset in this moment.

In above-mentioned balance water filling running, beginning appends in the balancer 46 with less initial stage water filling weight B.This moment since cylinder 38 with middling speed speed of gyration N3 revolution, so though be not when turn round as high speed dewatering, the water that washings is inhaled is also emitted, the weight ratio of washings detects the moment minimizing of non-central load before this.Therefore but its minimizing degree is smaller, and usually after appending to initial stage water filling weight B in the balancer 46, offset A2 does not become A1 * below (1/3).Thereby in balancer 46, appending in the process of weight to append water filling weight C thereafter, offset is received into A1 * when (1/3) is following, stops the dehydration revolution of appending and make it to divide a word with a hyphen at the end of a line of this weight. at every turnTherefore, before dehydration revolution is divided a word with a hyphen at the end of a line, offset is at A1 * (1/3) below and become the value that approaches A1 * (1/3), and therefore, because the dehydration running follows washing weight to reduce, offset further minimizing approaches 0.

, reduce to about 2/3 though estimate the weight of dehydration back washings in the above-described embodiments, washings causes the water absorption rate difference because of the kind of its fiber, weave etc.For example cloth group water absorption is very big, and therefore the weight minimizing degree after the dehydration is big.Thereby, for the different washings of water absorption, as long as take initial stage water filling weight B, append the formation of determinating reference among water filling weight C and the above-mentioned steps S63 (being A1 * (1/3) in the foregoing description) correction that suit, just can more positively suppress the vibration and the noise that cause by non-central load.

As the method for the water absorption rate of inferring the washings of accommodating in the cylinder 38, the easiest is exactly to utilize the preceding setting information of being set by the user such as washing procedure of this washing machine washing beginning.For example when selecting felt (cloth group) washing procedure, the water absorption of washings is many when being judged as than the choice criteria washing procedure, then by followingly setting initial stage water filling weight B like that, appending water filling weight C.

B＝A1×(1/2)×(2/3)＝A1×(1/3)

C＝A1×(1/4)×(1/3)＝A1×(1/12)

Then, in above-mentioned steps S63, A1 * below (1/2), the dehydration of just dividing a word with a hyphen at the end of a line is turned round as long as the offset in this moment becomes.

The foregoing description is illustrated tumbling-box washing machine, but can be bright be that the present invention is also applicable to the dry cleaner that uses the oil series solvent.

Claims (1)

1, centrifugal dehumidifier, this device are that washings is housed in the cylinder of cage shape, and making this cylinder is center rotation with the trunnion axis, take this to carry out the centrifugal dehumidifier of the dehydration of this washings, it is characterized in that possessing

A) by ducted body liquid maintaining part that forms of cylinder wall and to this maintaining part inject balance adjusting device that the fluid infusion apparatus of liquid constitutes,

B) detect the cylinder non-central load size and location the non-central load checkout gear and

C) also big and position this non-central load is the occasion of closely being close to the position of aforesaid liquid maintaining part subtend on cylinder internal perisporium face to the size of the non-central load that is detected by above-mentioned non-central load checkout gear under the state before liquid injects the aforesaid liquid maintaining part than setting, serves as the control device that the basis determines to have considered the reservoir quantity rear drive aforesaid liquid injection device of the water absorption rate of washings or dehydration rate with the size of this non-central load.

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