CN101532234B - Drum type washing machine - Google Patents

Drum type washing machine Download PDF

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Publication number
CN101532234B
CN101532234B CN2009100065908A CN200910006590A CN101532234B CN 101532234 B CN101532234 B CN 101532234B CN 2009100065908 A CN2009100065908 A CN 2009100065908A CN 200910006590 A CN200910006590 A CN 200910006590A CN 101532234 B CN101532234 B CN 101532234B
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CN
China
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mentioned
swing roller
tank
control part
vibration
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Expired - Fee Related
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CN2009100065908A
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CN101532234A (en
Inventor
犬塚正
八木功一
尾关祐仁
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Publication of CN101532234A publication Critical patent/CN101532234A/en
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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
    • D06F34/00Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/08Control circuits or arrangements thereof
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00Control of operations performed in washing machines or washer-dryers 
    • D06F33/50Control of washer-dryers characterised by the purpose or target of the control
    • D06F33/76Preventing or reducing imbalance or noise
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/26Imbalance; Noise level

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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)
  • Centrifugal Separators (AREA)

Abstract

A drum type washing machine includes a housing, a washtub unit (7) accommodated in the housing, a damper for elastically supporting the washtub at a supporting position, a vibration sensor for detecting a vibration of the washtub. The washtub unit includes a washtub having an opening therein, a rotary drum accommodated in the washtub, and a motor fixed to a bottom of the washtub and joined to a bottom of the rotary drum for rotating the rotary drum about a rotary axis. The rotary drum is adapted to accommodate a laundry. The supporting position and a center of gravity of the washtub unit approximate to the motor from a center plane which passes a center of the washtub and which is perpendicular to the rotary axis. The supporting position is distanced farther from the motor along a horizontal direction than the center of gravity is. The vibration sensor outputs a first signal and a second signal corresponding to a component of vibration of a portion of the washtub along a first direction and a component of the vibration along a second direction perpendicular to the first direction, respectively.

Description

Tumbling-box washing machine
Technical field
The present invention relates to a kind of tumbling-box washing machine that has around the swing roller of the rotation of level or inclination rotation.
Background technology
Fig. 7 is the cutaway view of tumbling-box washing machine 501 in the past.Tumbling-box washing machine 501 comprises housing 506 with gateway, utilize the tank 503 of vibrationproof damper 570 elastic bearings in housing 506, be fixed on the rear side of tank 503 motor 505, be provided in swing roller 502 in the tank 503, be arranged on the housing 506 and be arranged at the door 509 of gateway and be arranged at the flexible sealing component 541 of the gateway of housing 506.Tank 503, swing roller 502 and motor 505 constitute sink unit 507.On swing roller 502, be formed with many holes.The peristome of tank 503 is communicated in the gateway of housing 506.Swing roller 502 has the peristome of the peristome of the gateway that is communicated in housing 506 and tank 503.Swing roller 502 driven by motor 505 and around level or from peristome towards the downward-sloping rotation 502A of back side portion rotation.By opening door 509, the peristome that can be by tank 503 and the peristome of swing roller 502 and take out washings in the swing roller 502 or put it in the swing roller 502.Flexible sealing component 541 is made of the rubber elastomeric material, and it is sealed between the peristome of tank 503 and the door 509 by the peristome of tank 503 and door 509 compressions.
Since swing roller 502 levels or inclination, therefore, under static state below washings and the water deflection.When under this state, making swing roller 502 rotations, be easy to washings and water generates vibration by the deflection below.After washing or rinse cycle finish, below the washings that contains water is partial in swing roller 502.Afterwards, implementing to make swing roller 502 rotation and during at a high speed with the dehydration of washings dehydration, swing roller 502 vibrations, swing roller 502 makes tank 503 judders that are fixed by motor 505.Sometimes, in washing machine 501, produce abnormal vibrations, abnormal sound because of this vibration.
In dehydration, swing roller 502 rotates with rotating speed in a big way from low speed to high speed.Washings is when existing imbalance on the direction of rotation 502A, sometimes, rotating speed makes swing roller 502 produce strong whirlings and makes swing roller 502 collide tanks 503 and the generation noise.Particularly, exist in the front side under the situation of bigger weight along rotation 502A, and exist the situation of bigger weight to compare at rear side, swing roller 502 carries out whirling more consumingly.
Disclosed tumbling-box washing machine in the past has the vibrating detector of the oscillating component of vibration on a plurality of directions that detects tank 503 in the TOHKEMY 2006-311884 communique.When existing greater weight uneven, swing roller 502 is so that rotation 502A draws with motor 505 is that the mode of side of the cone shape on summit is vibrated.This washing machine is judged to be the front sides in the big weight deflection swing roller 502 and has imbalance according to the greater weight position of the detection of the oscillating component on detected a plurality of directions washings.
In tumbling-box washing machine 501 in the past, the vibration frequency of swing roller 502 is according to comprising that the weight of the swing roller 502 of washings, the position of washings change.When vibration frequency approaches the resonant frequency of tank 503, exist sink unit 507 integral body to vibrate consumingly and produce the situation of noise.The sufficient sealing load of the degree of guaranteeing to pass through for flexible sealing component 541 is compressed, so that the water in the washing, rinsing, dehydration and the spittle make the elastomeric material of flexible sealing component 541 harder not from flowing out between door 509 and the flexible sealing component 541.Thereby the vibration of sink unit 507 is passed to housing 506 via flexible sealing component 541, thereby makes housing 506 vibrations.Approach in vibration frequency under the situation of resonant frequency of housing 506, housing 506 also vibrates consumingly and influences the vibration of sink unit 507.Thereby, in tumbling-box washing machine in the past 501 shown in Figure 7, existence can't correctly judge member of formation is exerted an influence, the imbalance of washings in swing roller 502.
Summary of the invention
Tumbling-box washing machine comprises housing, be contained in sink unit in the housing, at the damper of bearing position elastic bearing tank with detect the vibration detecting part of tank vibration.Sink unit comprises tank with peristome, is contained in the swing roller in the tank and is fixed in the bottom of tank and make the motor of rotary drum rotating.Swing roller holds washings, rotates around rotation.The center of gravity of sink unit and bearing position are positioned at from by sink center and the central plane vertical with the rotation position near motor.In the horizontal direction, bearing position than center of gravity away from motor.Vibration detecting part is exported the 1st signal and the 2nd signal, and the 1st signal and the 2nd signal correspond respectively to the vibration of the part between the peristome of the central plane of tank and tank at oscillating component on mutually perpendicular the 1st direction and the oscillating component on the 2nd direction.Control part is according to the 1st signal and the 2nd signal of vibration detecting part output, judge whether produce the distribution of washings in swing roller than central plane close and be partial to swing roller peristome preceding imbalance and whether to produce the distribution of washings in swing roller more close and be partial to the back imbalance of the bottom of swing roller than central plane.
Even near the bottom of the distribution deflection swing roller of this tumbling-box washing machine washings in swing roller, also can judge imbalance.
Description of drawings
Fig. 1 is the cutaway view of the tumbling-box washing machine of embodiments of the present invention.
Fig. 2 is the circuit block diagram of the tumbling-box washing machine of embodiment.
Fig. 3 A~Fig. 3 C represents the vibration of tank of the tumbling-box washing machine of embodiment.
Fig. 4 represents the amplitude of vibration of the tumbling-box washing machine of embodiment.
Fig. 5 represents the vibration of the tumbling-box washing machine of embodiment.
Fig. 6 A and Fig. 6 B are the flow charts of the tumbling-box washing machine work of expression embodiment.
Fig. 7 is a cutaway view of representing tumbling-box washing machine in the past.
The specific embodiment
Fig. 1 is the cutaway view of the tumbling-box washing machine 1 of embodiments of the present invention.Washing machine 1 comprises housing 6 and the sink unit 7 that is contained in the housing 6.Sink unit 7 has tank 3, be contained in swing roller 2 in the tank 3, be fixed in the bearing 68 on the tank 3 and be fixed in motor 5 on the tank 3.Motor 5 utilizes rotary shaft 2B and swing roller 2 to link, and swing roller 2 is rotated around rotation 2A.Rotary shaft 2B is by bearing 68 supportings.Swing roller 2 has sidewall 2E and bottom 2F, and it is the drum that extend at the center that this sidewall 2E has with rotation 2A, and bottom 2F is connected towards motor 5 ground settings and with rotary shaft 2B.On sidewall 2E, be formed with many hole 2G.Swing roller 2 has towards the place ahead of housing 6 and is positioned at peristome 2C on the rotation 2A at the opposition side of bottom 2F.Tank 3 has towards the place ahead of housing 6 and is positioned at peristome 3C on the rotation 2A.Housing 6 have towards the place ahead and be arranged on the rotation 2A, can take out washings or washings be put into the gateway 6C of swing roller 2 from swing roller 2.Peristome 2C, 3C and gateway 6C interconnect on rotation 2A.The peristome 2C of rotation 2A spinning cylinder 2 dips down towards bottom 2F and tiltedly extends.Rotation 2A also can be level.Tank 3 has respectively sidewall 3E and the bottom 3F that faces mutually with the sidewall 2E and the bottom 2F of swing roller 2.The peristome 3C of tank 3 is positioned at the opposition side of bottom 3F.Since on the 3F of the bottom of tank 3, be equipped with have greater weight bearing 68, motor 5, therefore, the center of gravity G1 of sink unit 7 compares with the center C 1 of sink unit 7 near its back side, i.e. close motor 5, sink unit 7 instabilities.Sink unit 7, be that tank 3 utilizes vibrationproof damper 70 to be bearing in bearing position Q1 below tank 3, on the 1H, center of gravity G1 is between this bearing position Q1 and motor 5 in the horizontal direction.That is, in the horizontal direction on the 1H, bearing position Q1 than center of gravity G1 away from motor 5.And, be erected at helical spring 71 between the upper surface of the support unit 75 that is fixed in tank 3 tops and housing 6 towards the direction opposite with motor 5 to sink unit 7 (tank 3) application of force.And, utilize the back side and the helical spring 72 between housing 6 back sides of the sink unit 7 of the bearing position Q1 below be erected at vibrationproof damper 70, revise sink unit 7 and to back side inclination along the direction of motor 5.Like this, utilize vibrationproof damper 70 and helical spring 71,72, with higher effectiveness in vibration suppression supporting sink unit 7.Definition is by the center C 1 of tank 3 (sink unit 7) and the central plane S1 vertical with rotation 2A.On the direction 2H of rotation 2A, the bearing position Q1 of vibrationproof damper 70 and center of gravity G1 all are positioned at rear side, promptly are positioned at position towards the direction of motor 5 with respect to central plane S1 with respect to central plane S1.That is, the center of gravity G1 of sink unit 7 and bearing position Q1 are positioned at the position near motor 5 than the center C 1 by tank 3 and the central plane S1 vertical with rotation 2A.Distance L 1 between central plane S1 and the bearing position Q1 is greater than the distance L 2 between central plane S1 and the center of gravity G1.In the horizontal direction on the 1H, though bearing position Q1 be positioned at the rear side of center of gravity G1, promptly be positioned at proportion heart G1 towards the position of the direction of motor 5 since its be positioned at center of gravity G1 near, therefore, be easy to suppress the rear side vibration of sink unit 7.Vibration detecting part 40 detects the oscillating component of vibration on mutually perpendicular a plurality of directions of the part 3G of tank 3 at the central plane S1 of tank 3 and the part 3G between the peristome 3C.Specifically, displacement, speed or the acceleration component on mutually perpendicular a plurality of directions of the vibration of the part 3G of vibration detecting part 40 detection tanks 3 is as oscillating component.
In the 6C of the gateway of housing 6, be provided with door 9.On the 6C of the gateway of housing 6, be provided with flexible sealing component 41.By opening door 9, the peristome 3C that can be by tank 3 and the peristome 2C of swing roller 2 and gateway 6C and in swing roller 2, take out washings or washings is put into swing roller 2.Flexible sealing component 41 is made of the rubber elastomeric material, and it is sealed between the peristome 3C of tank 3 and the door 9 by the peristome 3C of tank 3 and door 9 compressions.
Fig. 2 is the circuit block diagram of tumbling-box washing machine 1.Tumbling-box washing machine 1 comprises the Air Blast fan 17 of heat air delivery in swing roller 2 and generates the heater 18,19 of this warm braw and have drying function.Control part 20 monitors from user's the indication input and the duty of each several part, to the rinse cycle of the washing process of washing washings, rinsing washings, with the dehydration of washings dehydration, control up to a succession of action of the washing machine 1 of the drying course that makes the washings oven dry.
Alternating current 31 is become direct current by rectifier 32 rectifications by the smoothing circuit smoothing that is made of choking-winding 33 and smmothing capacitor 34.This direct current makes its rotation via phase inverter 26 drive motors 5.Control part 20 is controlled the work of required loads such as feed water valve 64, draining pump 13, Air Blast fan 17, heater 18,19 according to reaching the rotation that the operating condition that is detected by each test section is controlled motor 5 from the running indication of importing configuration part 21 inputs by load drive division 37.
Motor 5 is to be provided with the stator with 3 phase coil 5A, 5B, 5C, the rotor with 2 utmost point permanent magnets and position detecting element 24A, the 24B of 3 detection rotor positions, the DC Brushless Motor of 24C.Paraphase (inverter) circuit 26 comprises switch element 26A~26F, makes its rotation by pulse width modulation (PWM) mode drive motor 5.The signal of the detected rotor-position of display position detecting element 24A~24C is imported into control part 20, come connection, the disconnection of gauge tap element 26A~26F according to this signal by drive circuit 25, the 3 phase coils 5A~5C that controls to stator in the PMW mode switches on, and rotor is rotated with required rotating speed.In addition, control part 20 comprises rotating speed test section 24.Rotating speed test section 24 any in the output signal of position detecting element 24A~24C detects the cycle of this signal when changing, according to the rotating speed of this computation of Period rotor.
Because the rotation 2A level of swing roller 2 or extend obliquely, therefore, hold the washings that contains water and when rotating, washings and water are easy to the deflection below at swing roller 2.Because the tank 3 of supporting swing roller 2 utilizes rubber-like vibrationproof damper 70, helical spring 71,72 to be supported on housing 6, therefore, be easy to when swing roller 2 rotations, vibrate.Particularly, make swing roller 2 with 1000~1600rpm so at a high speed the rotating speed rotation and in the process with the washings dehydration, after washing process or rinse cycle, the heavier washings that contains water is easy to concentrate on the position of the bias of swing roller 2.During washings generation bias, in the tank 3 that holds swing roller 2, produce bigger vibration, in washing machine 1, produce abnormal vibrations, abnormal sound.Since will be between door 9 and the sink unit 7 (tank 3) sealing flexible sealing component 41 for make water, the spittle not between door 9 and the tank 3 by and pressed against with bigger pressure 9 and tank 3 on, therefore, it constitutes flexible sealing component 41 by harder elastomeric material.Thereby with respect to via vibrationproof damper 70, the vibration of sink unit 7 (tank 3) more is to be transmitted by housing 6 via flexible sealing component 41.Like this, the situation that has the vibration resonance of housing 6 and tank 3.
In tumbling-box washing machine in the past 501 shown in Figure 7, detect the situation that swing roller 502 contacts with tank 503.At tank 503 during with the vibration resonance of the first resonance rotating speed about 120rpm, subresonance rotating speed about 250rpm or high rotational speed more than the 1000rpm and swing roller 502, sink unit 507 whole abnormal vibrations.Only detecting under swing roller 502 and the situation that tank 503 contacts, can't prevent to produce abnormal sound because of this vibration.In order to prevent abnormal sound, need to detect washings and concentrate on the preceding imbalance of front portion of swing roller 502 and the back imbalance at the rear portion that washings concentrates on swing roller 502.Sometimes, no matter the bias position of washings how, and the action during swing roller 502 vibrations is all different with the action of tank 503.In this case, can cause damage to motor 505 with tank 503 and swing roller 502 combinations.
In the tumbling-box washing machine 1 of embodiment, definition is passed through along the center C 1 of the rotation 2A of tank 3 and the central plane S1 vertical with rotation 2A.The center of gravity G1 of sink unit 7 be positioned at leave central plane S1 distance L 2 and than central plane S1 near the position of motor 5.The bearing position Q1 of 70 raggles 3 of vibrationproof damper be positioned at leave central plane S1 distance L 1 and than central plane S1 near the position of motor 5.Bearing position Q1 is positioned near the place ahead of center of gravity G1 on the 1H in the horizontal direction.Under this condition, the vibration at the peristome 3C place of the vibration of the bottom 3F at tank 3 rear portions and tank 3 front portions has the higher correlation of reliability.Vibration detecting part 40 outputs are based on the signal of the amplitude of vibration on a plurality of directions of tank 3 front portions.Control part 20 judges that according to the amplitude of detected vibration washings is than central plane S1 deflection the place ahead, is peristome 3C, still than central plane S1 near and be partial to the rear, promptly bottom 3F and motor 5.
As shown in Figure 1, vibration detecting part 40 output respectively with the displacement S of vibration on the fore-and-aft direction FR parallel of tank 3 front portions with rotation 2A FFR, the displacement S on vertical with rotation 2A and parallel left and right directions LR with horizontal direction 3H FLR, the displacement S on vertical with rotation 2A and parallel above-below direction UD with vertical direction IV FUDCorresponding signal.The vibration detecting part 40 of embodiment for example is the 3D acceleration detector of a plurality of components of sense acceleration, but also can substitute sense acceleration and a plurality of components of detection speed or a plurality of components of displacement.But vibration detecting part 40 does not need to detect the displacement S of vibration on left and right directions LR of the part 3G of tank 3 FLRWith the displacement S on above-below direction UD FUDIn a side. Horizontal direction 1H, 3H are level.
The washings that Fig. 3 A is illustrated in 500g from the central plane S 1 of tank 3 near and be partial to the place ahead, under the preceding unbalanced state when being peristome 3C, the displacement S that tank 3 is produced by vibration detecting part 40 detected vibrations FFR, S FLR, S FUD and displacement S FFR, S FLR, S FUDAmplitude A separately FFR, A FLR, A FUDFig. 3 B be illustrated in washings from the central plane S1 of tank 3 near and be partial to the rear, promptly bottom the displacement S of tank 3 under back non-equilibrium state during 3F FFR, S FLR, S FUDAnd amplitude A FFR, A FLR, A FUDThe displacement S of the tank 3 under the middle non-equilibrium state when Fig. 3 C is illustrated in the central plane S1 of washings deflection tank 3 FFR, S FLR, S FUDAnd amplitude A FFR, A FLR, A FUDDisplacement S FFR, S FLR, S FUDAnd amplitude A FFR, A FLR, A FUDBe actually the signals such as voltage, electric current of vibration detecting part 40 output.
Shown in Fig. 3 A~Fig. 3 C, can find out preceding imbalance, back imbalance and middle imbalance and amplitude A FLR, A FFR, A FUDHave following relevant.Amplitude A under the back non-equilibrium state shown in Fig. 3 B FLR, A FUDRespectively less than the amplitude A under the preceding non-equilibrium state shown in Fig. 3 A FLR, A FUDAmplitude A under the middle non-equilibrium state shown in Fig. 3 C FLRIt is the amplitude A under the preceding non-equilibrium state shown in Fig. 3 A FLRWith the amplitude A under the back non-equilibrium state shown in Fig. 3 B FLRBetween size.Amplitude A under the middle non-equilibrium state shown in Fig. 3 C FUDIt is the amplitude A under the preceding non-equilibrium state shown in Fig. 3 A FUDWith the amplitude A under the back non-equilibrium state shown in Fig. 3 B FUDBetween size.Amplitude A under the preceding non-equilibrium state shown in Fig. 3 A FFRLess than the amplitude A under the preceding non-equilibrium state shown in Fig. 3 A FLR, A FUDAmplitude A under the back non-equilibrium state shown in Fig. 3 B FFRGreater than the amplitude A under the back non-equilibrium state shown in Fig. 3 B FLR, A FUDAmplitude A under the middle non-equilibrium state shown in Fig. 3 C FFRLess than the amplitude A under the preceding non-equilibrium state shown in Fig. 3 A FFRWith the amplitude A under the back non-equilibrium state shown in Fig. 3 B FFRAmplitude A under the back non-equilibrium state shown in Fig. 3 B FFRWith the amplitude A under the preceding non-equilibrium state shown in Fig. 3 A FFRRoughly the same.Like this, the preceding imbalance under the state of washings bias, back imbalance and middle imbalance and amplitude A FLR, A FFR, A FUD, displacement S FLR, S FFR, S FUDClimbing, cycle, phase place have correlation.Oscillating component (the displacement S of the vibration of tank 3 front portions vertical on direction LR with rotation 2A FLR) and oscillating component (the displacement S on direction UD FUD), only be the difference that applies of gravity, all similarly act on the rotation of swing roller 2, therefore be analogous to each other.In addition, the component of the vibration of tank 3 front portions on direction LR, be displacement S FLRPrior to the component on direction FR, be displacement S FFRChange.That is displacement S, FLRPhase place than displacement S FFRPhase place forward.
When washings existed greater weight uneven, it was that the mode of side of the cone shape on summit is vibrated that swing roller 2 is drawn with motor 5 with rotation 2A.Even swing roller 2 judders, swing roller 2 is still less at the amplitude of the part of close motor 5, and this part can not contact with tank 3.But because motor 5 has bigger weight, therefore, motor 5 is in case vibration then can make the whole judder of the front portion that comprises tank 3.In addition, at the front and rear of sink unit 7, the action difference of vibration, resonance.Like this, according to the unbalance condition of washings, sometimes, near the vibration at the rear portion that the front portion of being not only tank 3 vibrates, the bottom 3F of tank 3 is also is very beneficial for sink unit 7 vibrations and produces abnormal sound.
The oscillating component of the vibration of front portion 40 detected by vibration detecting part, be close to peristome 3C from the central plane S1 of tank 3 on 3 directions, be displacement S FLR, S FFR, S FUDAnd have correlation from the central plane S1 of tank 3 near the oscillating component of vibration on 3 directions at the rear portion of bottom 3F.Fig. 4 be illustrated in washings from the central plane S1 of tank 3 near and be partial to the rear, promptly bottom the amplitude A of vibration under back non-equilibrium state during 3F, tank 3 FLRWith A FFRNear and the amplitude A of vibration on direction LR at the rear portion the bottom 3F of tank 3 RLRAs shown in Figure 4, the amplitude A of Qian Bu vibration on fore-and-aft direction FR FFRThe amplitude A of vibration on left and right directions LR with the rear portion RLRVery similar, therefore, can be by detecting the anterior amplitude A of vibration on fore-and-aft direction FR FFRInfer the amplitude A of vibration on left and right directions LR at rear portion RLR Vibration detecting part 40 is arranged on the front portion from the central plane S1 of tank 3 near peristome 3C ground, and therefore, vibration detecting part 40 is exported the corresponding strictly according to the facts signal of vibration with tank 3 front portions.
Below, illustrate according to the vibration of tank 3 front portions of tumbling-box washing machine 1 and judge that the distribution of washings in swing roller 2 is preceding imbalance or the unbalanced work in back.The corresponding signal of oscillating component in the oscillating component of vibration on a plurality of directions of vibration detecting part 40 output and tank 3 front portions and the fore-and-aft direction FR rotation 2A that is parallel to cylinder 2 and with perpendicular to the rotation 2A of cylinder 2 and be parallel to the corresponding signal of oscillating component on the left and right directions LR of horizontal direction 3H.Control part 20 is by the displacement S of front portion on left and right directions LR of these signal detection effluent troughs 3 FLRWith its displacement S on fore-and-aft direction FR FFRFig. 5 represents the displacement S on the left and right directions LR FLRWith the displacement S on the fore-and-aft direction FR FFR
As mentioned above, the displacement S on the left and right directions LR FLRDisplacement S on fore-and-aft direction FR FFRChange before.Displacement S on the left and right directions LR that formerly carries out FLRDo not reach under the situation of specified reference value B1, promptly vibrate the amplitude A on left and right directions LR FLRUnder the situation less than a reference value B1, control part 20 is uneven before being judged to be and both producing, and is uneven after also producing.Displacement S on left and right directions LR FLRReach under the situation of specified reference value B1, promptly vibrate the amplitude A on left and right directions LR FLRUnder the situation more than or equal to a reference value B1, the side before control part 20 is judged to be and produces in imbalance and the back imbalance.
Amplitude A on left and right directions LR FLRUnder the situation more than or equal to specified reference value B1, as long as from displacement S FLRThe moment P that arrives specified reference value B1 from the value less than specified reference value B1 is through the displacement S on official hour Δ T, the fore-and-aft direction FR FFRAscensional range Δ B more than or equal to the value B2 of regulation, control part 20 just is judged to be and is producing preceding imbalance, as long as ascensional range Δ B is less than the value B2 of regulation, control part 20 just is judged to be that to produce the back uneven.
Perhaps, the amplitude A on left and right directions LR FLRUnder the situation more than or equal to specified reference value B1, as long as at official hour Δ T intrinsic displacement S FFRRate of rise delta B/ Δ T more than or equal to the value B3 of regulation, control part 20 just is judged to be and is producing preceding imbalance, as long as rate of rise delta B/ Δ T is less than the value B3 of regulation, control part 20 just is judged to be that to produce the back uneven.
Then, illustrate according to the vibration of tank 3 front portions of tumbling-box washing machine 1 and judge the action that the preceding imbalance that be distributed as extreme bias of washings in swing roller 2 is unusual and the back is uneven unusual.Under the unusual state of preceding imbalance, compare with preceding unbalanced state, washings more near and be partial to the front portion of tank 3, promptly than central plane S1 near and be partial to peristome 3C.In addition, under the uneven unusual state in back, compare with the unbalanced state in back, washings more near and be partial to the rear portion of tank 3, promptly than central plane S1 near and deflection bottom 3F.As mentioned above, control part 20 be judged to be produce before under the unbalanced situation, in the amplitude A of vibration on left and right directions LR FLRDuring more than or equal to the threshold value A 1 of regulation, control part 20 is uneven unusual before being judged to be and producing.In addition, control part 20 be judged to be produce before under the unbalanced situation, in the amplitude A of vibration on left and right directions LR FLRDuring less than the threshold value A 1 of regulation,, control part 20 produces preceding imbalance though being judged to be, and uneven unusual before producing.The threshold value A 1 that is used for judging regulation uneven unusual before producing is greater than the specified reference value B1 that is used to judge the either party of uneven and back imbalance before producing.And, as mentioned above, be judged to be at control part 20 and produce under the unbalanced situation in back, in the amplitude A of vibration on fore-and-aft direction FR FFRDuring more than or equal to the threshold value A 2 of regulation, control part 20 is judged to be that to produce the back uneven unusual.In addition, be judged to be at control part 20 and produce under the unbalanced situation in back, in the amplitude A of vibration on fore-and-aft direction FR FFRDuring less than the threshold value A 2 of regulation, to produce the back uneven though control part 20 is judged to be, and it is uneven unusual to produce the back.Under uneven unusual or the situation that the back is uneven unusual, distribute equably in swing roller 2 in order to make washings before producing, control part 20 is to make swing roller 2 rotations, still swing roller 2 is stopped and washings bias significantly to user's report.In addition, compare with the vibration that preceding imbalance is unusual, vibration under the back imbalance is unusual is bigger to the influence of sink unit 7, particularly engine 5 and bearing 68, therefore, be used to judge that the threshold value A 2 that whether produces the uneven unusual regulation in back is set less than being used to judge the threshold value A 1 that whether produces the unusual regulation of preceding imbalance.
Like this, the signal by the vibration detecting part 40 of the front portion vibration that detects tank 3 is exported needs only the displacement S of vibration on left and right directions LR FLRAmplitude A FLRLess than specified reference value B1, control part 20 is uneven before just being judged to be and both producing, and is uneven after also producing.Thereby control part 20 need be by the amplitude A on the left and right directions LR FLRWith the amplitude A on the fore-and-aft direction FR FFRJudge before whether producing uneven unusual and the back is uneven unusual, and, need be by the displacement S on the fore-and-aft direction FR FFRJudge any that whether produces in preceding imbalance and the back imbalance, even do not need to detect displacement S FFR
In the tumbling-box washing machine 1 of embodiment, the specified reference value B1 that is used for judging a side who is producing preceding imbalance and back imbalance is more than or equal to 15mm, be used for judging that producing the unbalanced official hour Δ T in back is 2 seconds, the value B2 of regulation is more than or equal to 1mm.The threshold value A 1 that is used to judge regulation uneven unusual before producing is 25mm, is used to judge that the threshold value A 2 that is producing the uneven unusual regulation in back is 20mm.But these values are not defined as above-mentioned value.
The threshold value A 2 of the threshold value A 1 of control part 20 store predetermined and the regulation littler than the threshold value A 1 of regulation.In addition, the threshold value A 1 that control part 20 also can store predetermined and the amplitude A 3 of regulation will deduct the value that obtains after the amplitude A 3 of regulation from the threshold value A 1 of regulation and judge that as the threshold value A 2 of regulation the back is unusually uneven.Thus, can follow the threshold value A 2 of the threshold value A 1 ground change regulation of regulation by the threshold value A 1 that changes regulation.In addition, when imbalance was unusual after judgement, control part 20 also can calculate the amplitude A of vibration on fore-and-aft direction FR FFRAdd the value that obtains after the amplitude A 3 of regulation, under the situation of this value, be judged to be and produce the back imbalance unusually, under the situation of this value, be judged to be and do not produce the back imbalance unusually less than the threshold value A 1 of regulation more than or equal to the threshold value A 1 of regulation.
In addition, control part 20 also can be in tank 3 front portions the displacement S on left and right directions LR FLRAmplitude A FLRUnder the situation less than a reference value B1, be judged to be and produce preceding imbalance.Because displacement S FLRDisplacement S on fore-and-aft direction FR FFRDetected before, therefore, in amplitude A FLRUnder the situation less than a reference value B1, it is uneven that imbalance does not produce the back yet before both not produced, and therefore do not produce abnormal vibrations.
In addition, because washings is being easy to be partial to the bottom 2F of swing roller 2 more after a little while, therefore, under the unbalanced situation of the distribution bias that produces washings, it is bigger towards the inclined to one side back unbalanced tendency in the rear portion of close 3F from the central plane S1 of tank 3 to produce washings.Thereby, the amount of washings smaller or equal to ormal weight and vibration the amplitude A on left and right directions LR FLRUnder the situation more than or equal to a reference value B1, control part 20 also can not be judged to be a side who produces in preceding imbalance and the back imbalance, produces the back imbalance and be judged to be.Thus, uneven unusual before control part 20 can not judged, and uneven unusual after whether judgement is producing in early days.Because the amount of washings is relevant with the rotary load of swing roller 2, therefore, change from the electric current of phase inverter 26 inflow motors 5 amount when making swing roller 2 begin to rotate according to washings.When the amount of washings increased, it is big that electric current becomes.Current detection circuit 29 bases detect the electric current that flows into phase inverter 26 with the voltage at resistor 28 two ends that phase inverter 26 is connected in series.Control part 20 can detect the amount of washings according to detected electric current.
Control part 20 head for target rotating speeds promote the rotating speed of swing roller 2, up to judge before producing uneven unusual and back uneven unusually till.Before the rotating speed of swing roller 2 rises to rotating speed of target; it is uneven when unusual to be judged to be before producing uneven unusual or back; as long as the rotating speed of swing roller 2 is less than the reference rotation speed littler than rotating speed of target, control part 20 is just temporary transient to be reduced the rotating speed of swing roller 2 or swing roller 2 is stopped.Afterwards, the circular arc rotation that is repeated below, promptly, commentaries on classics control part 20 is controlled motor 5 and is made after the anglec of rotation of swing roller 2 rotations less than half-turn, make it rotate the anglec of rotation of enclosing round about less than 1, and, make it rotate the anglec of rotation of enclosing round about less than 1.Thus, the extreme bias of distribution of control part 20 elimination washings is uneven unusual.Afterwards, control part 20 once more the head for target rotating speed promote the rotating speed of swing roller 2.Thereby, can not produce imbalance and finish dehydration singularly.Perhaps, control part 20 also can eliminated the uneven rotating speed that promotes swing roller 2 after unusual, rotating speed is maintained this reference rotation speed after rotating speed reaches the said reference rotating speed.At this moment, control part 20 makes swing roller 2 speed ratios make the time longer time of swing roller 2 with the rotating speed of target rotation.This reference rotation speed is finished dehydration less than rotating speed of target singularly but control part 20 can not produce imbalance.Reference rotation speed is set to, and produces the uneven value that problems such as washing machine 1 breakage can not take place unusually yet that washings distributes even control part 20 is judged to be, and in embodiment, is set to about 880rpm~900rpm.
Like this, in tumbling-box washing machine 1, control part 20 do not detect part from the central plane S1 of tank 3 to bottom 3F, is the vibration at rear portion, just can according to the vibration of tank 3 front portions judge washings in swing roller 2 be distributed as preceding imbalance, still the back is uneven.
Then, the action of enforcement with the tumbling-box washing machine 1 of the dehydration of washings dehydration described.Fig. 6 A and Fig. 6 B are the flow charts of the work of the swing roller 2 in the expression dehydration.Sink unit 7 produces resonance when the rotating speed of swing roller 2 is first resonance rotating speed and subresonance rotating speed.In embodiment, the first resonance rotating speed is 120rpm, and the subresonance rotating speed is 240rpm, but is not limited thereto.In addition, the rotating speed of target of swing roller 2 is maximum speed in embodiment, is 1600rpm, but is not limited thereto.
In beginning during dehydration, control part 20 will be used for detect that washings distributes uneven unusual and several N that number of times that obtain is counted are set at " 1 " and (N=1) carry out initialization (step 100).Afterwards, behind the water (step 101) in discharging tank 3, carry out separating open procedure (step 102) with what swing roller 2 interior washings were untied.In separating open procedure, control part 20 is controlled motor 5 and swing roller 2 is rotated greater than 90 degree and less than 180 anglecs of rotation of spending with the rotating speed (for example about 40rpm) of untiing of regulation, it is lifted to greater than 90 degree and less than 180 angle positions of spending it is stopped suddenly.Afterwards, control part 20 makes swing roller 2 rotate the anglec of rotation of enclosing less than 1 round about with the rotating speed of untiing of regulation, it is lifted to greater than 90 degree and less than the angle positions of 180 degree it is stopped suddenly.And control part 20 further makes swing roller 2 rotate the anglec of rotation of enclosing less than 1 with the rotating speed of untiing of regulation to this opposite direction, washings is lifted to greater than 90 degree and less than the angle positions of 180 degree it is stopped suddenly, repeats circular arc and rotates.Thus, the washings on the sidewall 2E that is attached to swing roller 2 is applied stronger inertia force and washings spinning cylinder 2 is peeled off, it is fallen to the direction opposite with a side of mentioning.Thus, replaced about can be by mutual rightabout circular arc rotation by to untiing by the washings that peeled, and, all around be distributed in effectively in the swing roller 2 equably.
Then, control part 20 rises to the rotating speed of swing roller 2 to make washings to be attached to the regulation rotating speed (approximately 70rpm) (step 103) of the degree on swing roller 2 inner surfaces lentamente.Afterwards, the first regulation rotating speed of the first resonance rotating speed that control part 20 rises to the rotating speed of swing roller 2 to be lower than sink unit 7 (for example approximately 80rpm), and keep official hour (step 104A).Control part 20 judges whether producing uneven unusual (the step 104B) that washings distributes.At this moment, control part 20 is only according to uneven the two the displacement S of tank 3 on left and right directions LR in uneven before the signal reflection by vibration detecting part 40 output and back FLR, judge that imbalance is unusual, not according to the displacement S on the fore-and-aft direction FR FFRJudge uneven.Specifically, if the amplitude A on the left and right directions LR FLRMore than or equal to threshold value A 11, then control part 20 is judged to be and produces the imbalance that washings distributes, if amplitude A FLRLess than threshold value A 11, then control part 20 is not judged to be and produces imbalance.Threshold value A 11 is set at 40mm greater than above-mentioned threshold value A 1 in embodiment.In addition, when producing uneven unusual that washings distributes, the rotating speed of swing roller 2 is non-constant and unstable.Thereby, in step 104B, substitute relatively amplitude A FLRWith threshold value A 11, control part 20 also can produce imbalance unusually by not judging with the signal of predetermined distance outgoing position detecting element 24A, 24B, 24C output.
Control part 20 is judged to be and produces under the uneven unusual situation in step 104B, judges that number N is whether more than or equal to stipulated number, i.e. 4 (steps 105).Number N are less than under 4 the situation in step 105, and control part 20 makes swing roller 2 temporarily stop (step 106), afterwards, logarithm N add 1 (step 107) and execution in step 102 separate open procedure.
Number N regards as separating of step 102 and does not eliminate uneven unusual that washings distributes in the open procedure more than or equal under 4 the situation in step 105, and control part 20 judges that whether number N is more than or equal to 10.N is less than under 10 the situation in step 108, and control part 20 supplies water in swing roller 2 and revises uneven unusual (step 110) that washings distributes.In step 110, with step 102 to separate open procedure same, control part 20 is controlled motor 5 and swing roller 2 is rotated greater than 90 degree and less than 180 anglecs of rotation of spending with the rotating speed (for example about 40rpm) of untiing of regulation, it is lifted to greater than 90 degree and less than 180 angle positions of spending it is stopped suddenly.Afterwards, control part 20 makes swing roller 2 rotate the anglec of rotation of enclosing less than 1 round about with the rotating speed of untiing of regulation, it is lifted to greater than 90 degree and less than the angle positions of 180 degree it is stopped suddenly.And control part 20 makes swing roller 2 rotate the anglec of rotation of enclosing less than 1 with the rotating speed of untiing of regulation to this opposite direction, washings is lifted to greater than 90 degree and less than the angle positions of 180 degree it is stopped suddenly, repeats circular arc and rotates.Thus, the washings on the sidewall 2E that is attached to swing roller 2 is applied stronger inertia force and washings spinning cylinder 2 is peeled off, it is fallen to the direction opposite with a side of mentioning.Thus, can be utilized mutual rightabout circular arc rotation by the washings that peeled and about replacing and untied, and, all around be distributed in effectively in the swing roller 2 equably.
N is under 10 the situation in step 108, regards as and can't eliminate uneven unusual that washings distributes, and control part 20 shows uneven unusual and make tumbling-box washing machine 1 shut down (step 109).
Control part 20 is not judged to be at the appointed time and is producing under the uneven unusual situation in step 104B, control part 20 control motor 5 make the rotating speed of swing roller 2 rise to the first resonance rotating speed (for example 120rpm) of sink unit 7 and keep official hour (step 111A).In step 111A, control part 20 also can make swing roller 2 with the near (for example 120rpm~140rpm) rotation of the rotating speed the first resonance rotating speed.During making swing roller 2 with above-mentioned rotating speed rotation, control part 20 is according to the displacement S of the front portion vibration of tank 3 FLR, S FFR, amplitude A FLR, A FFR, a reference value B1 and ascensional range Δ B, judge that as described above preceding imbalance and back that washings distributes are uneven, and judge the preceding imbalance unusual and back uneven unusual (step 111B) that washings distributes.In step 111B, control part 20 produces preceding imbalance or the imbalance that washings distributes in order to judge, also can substitute according to displacement S FFRThe method shown in Figure 5 of ascensional range Δ B, and the amplitude A on left and right directions LR FLRMore than or equal to the amplitude A on the fore-and-aft direction FR FFRSituation under, be judged to be and produce preceding imbalance, the amplitude A on left and right directions LR FLRLess than the amplitude A on the fore-and-aft direction FR FFRSituation under, be judged to be that to produce the back uneven.In step 111B, the amplitude A of control part 20 on left and right directions LR FLRUnder the situation more than or equal to threshold value A 12, be judged to be and produce preceding imbalance unusually, in amplitude A FLRUnder the situation less than threshold value A 12, be not judged to be and producing preceding imbalance unusually.And, in step 111B, the amplitude A on fore-and-aft direction FR FFRUnder the situation more than or equal to threshold value A 22, control part 20 is judged to be and produces the back imbalance unusually, in amplitude A FFRUnder the situation less than threshold value A 22, be not judged to be and produce the back imbalance unusually.Usually, sink unit 7 is near the oscillating component of the vibration the first resonance rotating speed oscillating component greater than near its vibration the subresonance rotating speed, particularly, near the vibration the first resonance rotating speed at the oscillating component on the left and right directions LR greater than it near the oscillating component of the vibration the subresonance rotating speed on left and right directions LR.Thereby the threshold value A 12 among the step 111B is set greater than the 40mm of above-mentioned threshold value A 1 (25mm).In addition, threshold value A 22 is set less than 24mm.
In step 111B, uneven unusual or back was uneven when unusual before control part 20 was judged to be and produces, and in step 105, control part 20 judges that whether N are more than or equal to the number of times of regulation, promptly whether more than or equal to 4.Afterwards, control part 20 is carried out in step 102 as described above and is separated open procedure, and it is unusual perhaps to revise imbalance in step 110, and tumbling-box washing machine 1 is shut down.
Under the situation that imbalance was unusual or the back is uneven unusual before control part 20 was not judged to be at the appointed time and is producing in step 111B; control part 20 control motor 5 make the rotating speed of swing roller 2 rise to the subresonance rotating speed (for example 240rpm) of sink unit 7 and keep official hour (step 112A).In step 112A, control part 20 also can make swing roller 2 with greater than the rotating speed among the step 111B and be near the subresonance rotating speed rotating speed (for example 141rpm~330rpm) rotation.During making swing roller 2 with above-mentioned rotating speed rotation, control part 20 is according to the displacement S of the front portion vibration of tank 3 FLR, S FFR, amplitude A FLR, A FFR, a reference value B1 and ascensional range Δ B, judge that as described above preceding imbalance and back that washings distributes are uneven, and judge the preceding imbalance unusual and back uneven unusual (step 112B) that washings distributes.In step 112B, the amplitude A of control part 20 on left and right directions LR FLRUnder the situation more than or equal to threshold value A 13, be judged to be and produce preceding imbalance unusually, in amplitude A FLRUnder the situation less than threshold value A 13, be not judged to be and produce preceding imbalance unusually.And, in step 112B, the amplitude A of control part 20 on fore-and-aft direction FR FFRUnder the situation more than or equal to threshold value A 23, be judged to be and produce the back imbalance unusually, in amplitude A FFRUnder the situation less than threshold value A 23, be not judged to be and produce the back imbalance unusually.Threshold value A 13 among the step 112B is configured to be all 25mm with above-mentioned threshold value A 1.In addition, threshold value A 23 is configured to be all 20mm with above-mentioned threshold value A 2.
Uneven unusual or back was uneven when unusual before control part 20 was judged to be and produces in step 112B, and in step 105, control part 20 judges that whether N are more than or equal to the number of times of regulation, promptly whether more than or equal to 4.Afterwards, control part 20 is carried out in step 102 as described above and is separated open procedure, and it is unusual perhaps to revise imbalance in step 110, and tumbling-box washing machine 1 is shut down.
Under the situation that imbalance was unusual or the back is uneven unusual before control part 20 was not judged to be at the appointed time and is producing in step 112B; control part 20 control motor 5 make swing roller 2 with greater than the reference rotation speed of the rotating speed among step 112A, the 112B (the rotation official hour (step 113A) of 880rpm~900rpm) for example.During making swing roller 2 with the reference rotation speed rotation, control part 20 is according to the displacement S of the front portion vibration of tank 3 FLR, S FFR, amplitude A FLR, A FFR, a reference value B1 and ascensional range Δ B, judge that as described above preceding imbalance and back that washings distributes are uneven, and judge the preceding imbalance unusual and back uneven unusual (step 113B) that washings distributes.In step 113B, the amplitude A of control part 20 on left and right directions LR FLRUnder the situation more than or equal to threshold value A 14, be judged to be and produce preceding imbalance unusually, in amplitude A FLRUnder the situation less than threshold value A 14, be not judged to be and producing preceding imbalance unusually.And, in step 113B, the amplitude A of control part 20 on fore-and-aft direction FR FFRUnder the situation more than or equal to threshold value A 24, be judged to be and produce the back imbalance unusually, in amplitude A FFRUnder the situation less than threshold value A 24, be not judged to be and producing the back imbalance unusually.Threshold value A 14 among the step 113B, A24 set for identical with threshold value A 13, A23 among the step 112B respectively.
Uneven unusual or back was uneven when unusual before control part 20 was judged to be and produces in step 113B, and in step 105, control part 20 judges that whether N are more than or equal to the number of times of regulation, promptly whether more than or equal to 4.Afterwards, control part 20 is carried out in step 102 as described above and is separated open procedure, and it is unusual perhaps to revise imbalance in step 110, and tumbling-box washing machine 1 is shut down.
Under the situation that imbalance was unusual or the back is uneven unusual before control part 20 was not judged to be at the appointed time and is producing in step 113B; control part 20 control motor 5, the rotating speed that makes swing roller 2 from reference rotation speed towards maximum speed, be rotating speed of target (for example 1600rpm) rise (step 114A).In step 114A, make swing roller 2 rotation during in, control part 20 is according to the displacement S of the front portion vibration of tank 3 FLR, S FFR, amplitude A FLR, A FFR, a reference value B1 and ascensional range Δ B, judge that as described above preceding imbalance and back that washings distributes are uneven, and judge the preceding imbalance unusual and back uneven unusual (step 114B) that washings distributes.In step 114B, the amplitude A of control part 20 on left and right directions LR FLRUnder the situation more than or equal to threshold value A 15, be judged to be and produce preceding imbalance unusually, in amplitude A FLRUnder the situation less than threshold value A 15, be not judged to be and producing preceding imbalance unusually.And, in step 114B, the amplitude A of control part 20 on fore-and-aft direction FR FFRUnder the situation more than or equal to threshold value A 25, be judged to be and produce the back imbalance unusually, in amplitude A FFRUnder the situation less than threshold value A 25, be not judged to be and producing the back imbalance unusually.In step 114B, the rotating speed of swing roller 2 is bigger, therefore, considers the intensity of sink unit 7, and control part 20 is set threshold value A 15 to such an extent that be 12mm less than threshold value A 14, and threshold value A 15 further reduces along with the increase of rotating speed.Equally, control part 20 is set threshold value A 25 less than threshold value A 24, threshold value A 15 and is 10mm, and threshold value A 25 further reduces along with the increase of rotating speed.In step 114B, control part 20 produces any in preceding imbalance that washings distributes or the back imbalance in order to judge, also can substitute according to displacement S FFRThe method shown in Figure 5 of ascensional range Δ B, and the amplitude A on left and right directions LR FLRMore than or equal to the amplitude A on the fore-and-aft direction FR FFRSituation under, be judged to be and produce preceding imbalance, the amplitude A on left and right directions LR FLRLess than the amplitude A on the fore-and-aft direction FR FFRSituation under, be judged to be that to produce the back uneven.
Under the situation that imbalance was unusual or the back is uneven unusual before control part 20 was not judged to be and produces in step 114B, control part 20 judges whether the rotating speed of swing roller 2 has reached rotating speed of target (step 115).
The rotating speed that control part 20 is judged to be swing roller 2 in step 115 reaches under the situation of rotating speed of target, makes the rotating speed of swing roller 2 keep official hour (step 116A) with rotating speed of target, afterwards, makes swing roller 2 stop (step 117), finishes dehydration.In step 115, the rotating speed that control part 20 is not judged to be swing roller 2 has reached under the situation of rotating speed of target, and in step 114A, control part 20 is controlled motor 5 and the rotating speed head for target rotating speed of swing roller 2 is risen.In step 114B, make swing roller 2 rotation during in, control part 20 is according to the displacement S of the front portion vibration of tank 3 FLR, S FFR, amplitude A FLR, A FFR, a reference value B1 and ascensional range Δ B, judge that as described above preceding imbalance and back that washings distributes are uneven, and judge that preceding imbalance that washings distributes is unusual and the back is uneven unusual.
Before control part 20 is judged to be and produces in step 114B under uneven unusual or the situation that the back is uneven unusual, control part 20 makes the rotating speed of swing roller 2 maintain control part 20 is judged to be uneven unusual or moment that the back is uneven unusual before producing in step 114B rotating speed (greater than reference rotation speed and less than rotating speed of target) stipulated time (step 116B).Afterwards, in step 117, control part 20 makes swing roller 2 stop (step 117), finishes dehydration.Stipulated time of rotating speed of keeping swing roller 2 in step 116B is longer than the stipulated time that the rotating speed of swing roller 2 is maintained rotating speed of target in step 116A.
Like this, the tumbling-box washing machine 1 of embodiment 1 can detect uneven unusual with first resonance rotating speed, the subresonance rotating speed that sink unit 7 is easy to produce abnormal vibrations efficiently, thereby can prevent abnormal vibrations, the noise of sink unit 7 reliably.
In addition, the tumbling-box washing machine 1 of embodiment 1 utilizes according to the amplitude of the value of signals self such as displacement, speed, the acceleration of tank 3 voltages that change, vibration detecting part 40 outputs, electric current, the distribution that phase place detects washings.
In addition, in tumbling-box washing machine 1, control part 20 is according to the separately displacement S of the tank 3 that produces because of vibration on left and right directions LR and fore-and-aft direction FR FLR, displacement S FFRDetect the distribution of washings.Because the displacement S of tank 3 on left and right directions LR FLRWith the displacement S on the above-below direction UD FUDSimilar, therefore, control part 20 also can be according to displacement S FUDWith displacement S FFRDetect the distribution of washings, and, also can be according to the displacement of the oscillating component on the conduct of the tank 3 front portions direction vertical with as the displacement S that is parallel to the oscillating component of rotation 2A with rotation 2A FFRDetect the distribution of washings.In addition, tumbling-box washing machine 1 detects the distribution of washings according to the displacement of tank 3 front portions that produce because of vibration.Because the displacement S shown in Fig. 3 A~Fig. 3 C FLR, S FFR, S FUDWaveform with sinusoidal wave similar, therefore, even differential or integration, its mutual phase place, relationship of amplitude are also constant, thereby in the tumbling-box washing machine 1 of embodiment, control part 20 also can be according to the speed of tank 3 front portions that produce because of vibration, the distribution that acceleration detects washings.
In addition, the detailed content of embodiment does not limit the present invention.
Even near the bottom of the distribution deflection swing roller of tumbling-box washing machine washings of the present invention in swing roller, also can judge imbalance, can be used for carrying out the distribute tumbling-box washing machine of the processing when unusual of washings.

Claims (3)

1. tumbling-box washing machine, wherein, this tumbling-box washing machine comprises housing, sink unit, damper, control part, vibration detecting part;
Above-mentioned sink unit comprises: tank, and it is contained in the above-mentioned housing, has peristome and the bottom that is positioned at the opposition side of above-mentioned peristome; Swing roller, it is contained in the above-mentioned tank, be used to hold washings, have and the sidewall of the parallel drum of rotation and the bottom that is arranged on the above-mentioned rotation and faces mutually with the bottom of above-mentioned tank, the peristome that also has the opposition side of the bottom that on above-mentioned rotation, is arranged at above-mentioned swing roller and be connected with the above-mentioned peristome of above-mentioned tank, this swing roller rotates around above-mentioned rotation; Motor, it is fixed in the above-mentioned bottom of above-mentioned tank and is connected with the above-mentioned bottom of above-mentioned swing roller, is used to make above-mentioned swing roller to rotate around above-mentioned rotation;
Above-mentioned damper is used for flexibly supporting above-mentioned tank at bearing position;
Above-mentioned control part is used to control above-mentioned motor;
Above-mentioned vibration detecting part is used to detect the vibration of above-mentioned tank;
The above-mentioned rotation of above-mentioned swing roller is level or downward-sloping towards the above-mentioned bottom of above-mentioned swing roller from the above-mentioned peristome of above-mentioned swing roller;
The center of gravity of above-mentioned sink unit and above-mentioned bearing position are positioned at than the center by above-mentioned tank and the central plane vertical with the above-mentioned rotation position near above-mentioned motor;
In the horizontal direction, above-mentioned bearing position than above-mentioned center of gravity away from above-mentioned motor;
Above-mentioned vibration detecting part is exported the 1st signal and the 2nd signal, the vibration of the part between the above-mentioned central plane that above-mentioned the 1st signal and above-mentioned the 2nd signal correspond respectively to above-mentioned tank and the above-mentioned peristome of above-mentioned tank with vertical the 1st direction of above-mentioned rotation on oscillating component and 2nd direction parallel with above-mentioned rotation on oscillating component;
Above-mentioned control part is according to the amplitude of above-mentioned the 1st signal of above-mentioned vibration detecting part output, judges that whether to produce the distribution of above-mentioned washings in above-mentioned swing roller more close and to be partial to the preceding imbalance of above-mentioned peristome of above-mentioned swing roller and the distribution of above-mentioned washings in above-mentioned swing roller more close and be partial in the back imbalance of above-mentioned bottom of above-mentioned swing roller any than above-mentioned central plane than above-mentioned central plane;
Judged produce above-mentioned before in the imbalance of uneven and above-mentioned back under any situation, based in the Δ T at the appointed time by above-mentioned the 2nd signal detection go out along the ascensional range of the displacement of above-mentioned the 2nd direction or climbing judge produce before above-mentioned uneven and above-mentioned after in the imbalance which.
2. tumbling-box washing machine according to claim 1, wherein,
Whether the amplitude of above-mentioned 1st signal of above-mentioned control part by judging above-mentioned vibration detecting part output more than or equal to the 1st threshold value, judges before above-mentioned unbalanced unusual; Whether the amplitude of above-mentioned the 2nd signal by judging the output of above-mentioned vibration detecting part judges above-mentioned back unbalanced unusual more than or equal to the 2nd threshold value.
3. tumbling-box washing machine according to claim 1 and 2, wherein,
Above-mentioned housing has the gateway that is connected with the above-mentioned peristome of above-mentioned tank;
Above-mentioned housing also comprises: door, and it is used to open or close above-mentioned gateway; Flexible sealing component, the above-mentioned gateway that it is arranged at above-mentioned housing is used for sealing between the above-mentioned peristome of above-mentioned tank and the above-mentioned door.
CN2009100065908A 2008-03-13 2009-02-19 Drum type washing machine Expired - Fee Related CN101532234B (en)

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MY146696A (en) 2012-09-14
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ATE501296T1 (en) 2011-03-15
TWI362439B (en) 2012-04-21

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