WO2003050341A1 - Inverseur pour lave-linge et inverseur pour lave-linge/seche-linge - Google Patents
Inverseur pour lave-linge et inverseur pour lave-linge/seche-linge Download PDFInfo
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- WO2003050341A1 WO2003050341A1 PCT/JP2002/011635 JP0211635W WO03050341A1 WO 2003050341 A1 WO2003050341 A1 WO 2003050341A1 JP 0211635 W JP0211635 W JP 0211635W WO 03050341 A1 WO03050341 A1 WO 03050341A1
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- Prior art keywords
- motor
- washing
- water
- control
- rinsing
- Prior art date
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
- D06F37/304—Arrangements or adaptations of electric motors
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/10—Power supply arrangements, e.g. stand-by circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/24—Spin speed; Drum movements
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
- D06F2105/48—Drum speed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Definitions
- the present invention relates to a fully automatic washing machine that continuously performs washing, rinsing, and dewatering processes.
- a washing machine that drives and controls a motor that provides a rotational driving force for performing each of washing, rinsing, and dewatering operations.
- the rotary driving force for each of the washing, rinsing, dewatering and drying operations is provided.
- a brushless DC motor is used for a stirring blade (pulse overnight) or a motor for rotating a rotating tub.
- a system in which the motor is driven by an inverter circuit is widely used.
- the torque is controlled in accordance with the driving conditions of the motor, the applied voltage of the motor is increased or decreased.
- the rotation speed of the motor is proportional to the output torque, but the output torque controlled by the applied voltage is not proportional to the voltage. Therefore, a difference is likely to occur between the target speed command and the detection speed of the motor. There is a problem that it tends to be stable.
- the inventor of the present invention has applied vector control to drive the motor used in a washing machine or the like with higher accuracy, and controlled the output torque by the q (quadrature) axis current.
- the proposed technology is proposed in Japanese Patent Application No. 2000-171. That is, since the output torque of the brushless DC motor is proportional to the q (quadrature) axis current obtained by the vector control, the torque control of the motor and, consequently, the rotation speed control can be performed with high accuracy.
- the motor used in the washing machine or the washer / dryer is controlled so that it rotates at a low speed in the washing operation, but rotates at a high speed in the dehydrating operation.
- the output voltage of the impeller overnight circuit cannot be set close to 100% when performing the weak field operation. For this reason, the field must be weakened further by an amount corresponding to the lowering of the voltage, and the efficiency of the motor is reduced, and the power supply current must be increased. There was a problem.
- the present invention has been made in view of the above circumstances, and has as its object to realize a weak field operation even when vector control is introduced as a drive control of a motor used in a washing machine or a washer / dryer. It is an object of the present invention to provide an amplifier device that can further increase the output voltage when performing the operation. Disclosure of the invention
- the inverting device of the washing machine according to the present invention includes a series of washing, rinsing, and dehydrating steps. For a fully automatic washing machine to be performed subsequently, a motor that gives a rotational driving force for performing each operation of washing, rinsing, and dehydration is controlled.
- the motor In the low-speed rotation region of the washing, rinsing and dehydrating operations, the motor is controlled to operate at the entire field, and in the high-speed rotation region of the dehydration operation, the motor is controlled to operate at the weak field.
- the output torque of the motor When the all-field operation is performed, the output torque of the motor is vector-controlled, and when the weak-field operation is performed, control means for controlling the voltage and phase of the motor is provided.
- the inverting device of the washer / dryer of the present invention is a fully automatic washer / dryer that continuously performs each of the steps of washing, rinsing, dehydrating and drying, and performs the operations of washing, rinsing, dewatering and drying.
- Drive control to provide a rotational drive force to perform
- Control means for performing vector control of the output torque of the motor when performing the full-field operation, and voltage and phase control for controlling the output torque of the motor when performing the weak-field operation It is characterized by having. That is, in the high-speed rotation region of the dehydration operation in which the weak field operation needs to be performed, the control means switches to the voltage / phase control without performing the vector control. It does not exceed the voltage given as a value. Accordingly, the weak field operation can be performed after setting the voltage supplied to the motor in the high-speed rotation region of the dehydration operation to be higher.
- FIG. 1 shows a first embodiment in which the present invention is applied to a washing machine, and is a functional block diagram showing a configuration of a control system centered on a microcomputer.
- FIG. 2 is a longitudinal sectional view of the washing machine
- FIG. 3 is a flowchart showing the control contents at the beginning of the motor drive control by the microcomputer.
- Fig. 4 is a diagram corresponding to Fig. 3 during the dehydration operation
- Fig. 5 shows (a) PWM It is a figure which shows the waveform of a carrier wave and the gate signal of (b) upper arm side, and (c) lower arm side.
- FIG. 6 is a waveform diagram showing the relationship between (a) the reverse current I MINV of the phase current over time, (b) the current I SR flowing through the shunt resistor, and (c) the phase voltage.
- FIG. 7 is a diagram showing the rotation speed control unit of the stirring blades during washing or rinsing operation
- Fig. 7 (b) is a rotation speed control unit shown in (a).
- FIG. 7 is a diagram showing an output pattern of a q-axis current command value I qref output by a speed PI control unit in response to the above.
- FIG. 8 is a diagram corresponding to FIG. 7 during the dehydration operation.
- Fig. 9 explains the field weakening control by the lead angle energization.
- (A) to (g) show the positional relationship between the stay winding coil and the mouth opening magnet when the motor speed is the rotation speed.
- (H) to (j) show the whole field control, and (k) to (m) show the field weakening control.
- FIG. 10 is a diagram showing the relationship between the applied voltage (V) and the input power (W) of the motor when driven at the maximum rotation speed of the dehydration operation.
- FIG. 11 shows a second embodiment in which the present invention is applied to a fully automatic washing and drying machine, and is a longitudinal side view of a drum type washing and drying machine.
- FIG. 12 is a functional block diagram showing the electrical configuration of the microcomputer and its periphery.
- FIG. 13 is a diagram showing a series of steps of the washing and drying machine.
- FIG. 14 is a diagram showing a motor / rotation speed control pattern during the washing or rinsing operation.
- FIG. 15 is a diagram corresponding to FIG. 14 during the dehydration operation, and
- FIG. 16 is a diagram during the drying operation. It is a figure equivalent to 14.
- FIG. 17 is a diagram corresponding to FIG. 2 showing a third embodiment in which the present invention is applied to a vertical washing / drying machine.
- FIG. 18 is a diagram corresponding to FIG. 14, and FIG. It is a figure equivalent to 5.
- Fig. 20 (a) is a diagram equivalent to Fig. 16, and Fig. 20 (b) is a diagram showing the rotation direction of the pulse train during drying operation.
- FIG. 2 is a longitudinal sectional view showing the entire configuration of the fully automatic washing machine 1.
- the outer box 2 has a rectangular shape as a whole, and a water receiving tank 3 is elastically supported therein through four sets (only one set is shown) of a vibration isolating mechanism 4.
- the anti-vibration mechanism 4 includes a suspension rod 4 a whose upper end is locked upward in the outer box 2, and a vibration damping damper 4 b attached to the other end of the suspension rod 4 a. Consists of '. Since the water receiving tank 3 is elastically held through these vibration isolating mechanisms 4, the vibration generated during the washing operation is prevented from being transmitted to the outer box 2 as much as possible.
- a rotary tub 5 for a washing tub and a dewatering tub is provided, and a stirring body (pulse set) 6 is provided at the inner bottom of the rotary tub 5.
- the rotating tank 5 includes a tank body 5a, an inner cylinder 5b provided inside the tank body 5a, and a balance ring 5c provided at an upper end thereof.
- the water inlet 7 is formed at the bottom of the rotary tank 5 and communicates with the drain 8 through a drain passage 7a.
- the drain 10 provided with the drain valve 9 is connected to the drain 8. Therefore, when water is supplied into the rotary tank 5 with the drain valve 9 closed, water is stored in the rotary tank 5, and when the drain valve 9 is opened, the water in the rotary tank 5 drains the drain passage 7a and the drain port 8 And drains through the drains 10.
- the auxiliary drain port 8a is formed at the bottom of the water receiving tank 3, and is connected to the drain channel 10 by bypassing the drain valve 9 via a connecting hose (not shown).
- the auxiliary drain 8a discharges the water discharged into the water receiving tank 3 when the rotating tank 5 rotates from above.
- the mechanism housing 11 is attached to the outer bottom of the water receiving tank 3.
- the hollow tank shaft 12 is provided rotatably with respect to the mechanism housing 11, and the rotary tank 5 is connected thereto.
- the stirring shaft 13 is rotatably provided inside the tank shaft 12, and a stirring body 6 is connected to the upper end of the stirring shaft 13.
- the lower end of the stirring shaft 13 is connected to the mouth 14a of the brushless model 14 of the shape of the mouth.
- the brushless model 14 directly drives the agitator 6 forward and reverse during washing.
- the brushless model 14 directly rotates the rotary tank 5 and the stirring body 6 in the negative direction while the tank shaft 2 and the stirring shaft 13 are connected by a clutch (not shown). It has become. Therefore, in the present embodiment, the rotation speed of the brushless machine 14 is the same as that of the stirring body 6 during washing, and the same as that of the rotating tank 5 and the stirring body 6 during dehydration. Is adopted.
- FIG. 1 is a functional block diagram showing the drive control system of the motor 14.
- (h, ⁇ ) is the orthogonal coordinate system obtained by orthogonally transforming the three-phase (UVW) coordinate system with electrical angle intervals of 120 degrees corresponding to each phase of the three-phase brushless model.
- (D, q) shows the coordinate system of the secondary magnetic flux rotating with the rotation of the mouth 14a of the brushless mode 14.
- the speed command output unit 15 outputs the target speed command w ref to the subtracter 16 as a value to be subtracted. Detection speed of brushless mode overnight 14 ⁇ is Estime overnight
- the speed PI controller 18 performs ⁇ I control based on the difference between the target speed command w ref and the detected speed ⁇ , and calculates the q-axis current command value I qref and d (direc axis current command value I dref). Generated and output as subtracted values to the subtracters 1 9 and 20.
- the d-axis current command value I dref is set to “0”.
- the drive 14 is driven by full-field control.
- the q-axis current value I q and the d-axis current value I d are output from the /? / dq converter 21 and are given to the subtracters 19 and 20 as subtracted values, respectively.
- the subtraction results of the subtracters 19 and 20 are given to the current PI controllers 22q and 22d, respectively.
- the control cycle in the speed PI controller 18 is set to 1 ms.
- the current PI controllers 2 2 q and 2 2 d perform PI control based on the difference between the q-axis current command value I qref and the d-axis current command value I dref, and provide the q-axis voltage command value V q and Generates d-axis voltage command value Vd and outputs it to dq / a?
- the dq / h /? conversion unit 23 is provided with the rotational phase angle (low-sun position angle) 0 of the secondary magnetic flux in the brushless night 14 detected by the estimator 17. Then, (1 / H conversion unit 23 converts the voltage command values V d, V q into voltage command values .V H, V / 3 based on the rotation phase angle 0.
- the voltage command values V and V output by the dq /? conversion section 23 are given to the a ⁇ / U VW conversion section 24.
- The? / U VW converter 24 converts the voltage command values Va, V? Into three-phase voltage command values Vu, V, Vw and outputs them.
- the voltage command values Vu, VV and Vw are given to the fixed contacts 25 ua, 25 Va and 25 wa of the switching switches 25 u, 25 V and 25 w.
- the other fixed contacts 25 ub, 25 Vb, and 25 wb are given voltage command values Vus, Vvs, and Vws output by the voltage / phase control unit 26.
- the movable contacts 25 uc, 25 vc, 25 wc of the switching switches 25 u, 25 V, 25 w are connected to the input terminals of the PWM forming section 27.
- the PWM generator 27 generates a PWM signal Vup (+,-) of each phase obtained by modulating a 16 kHz carrier wave (triangular wave) based on the voltage command values VTIS, Vvs, Vws.
- V vp (+,-) and V wp (+,-) are output to the inverter circuit 28.
- the PWM signals Vup to Vwp are based on a sine wave such that a sinusoidal current is supplied to each phase winding 14 u, 14 V, 14 w (see FIG. 2) of the module 14. Is output as a signal having a pulse width corresponding to the applied voltage amplitude.
- the inverter circuit 28 is composed of six IGBTs 29 (af) connected in a three-phase bridge (only one phase is shown in Fig. 1).
- the emitters of the IGB T 29 C, 29 d on the lower arm side are connected to ground via a shunt resistor 30 (u, V), and an amplifier (not shown) It is connected to the A / D conversion section 32 via a bias circuit.
- Amplification The bias circuit is configured to include an operational amplifier, etc., so that the terminal voltage of the shunt resistor 30 is amplified and the output range of the amplified signal falls within the positive range (for example, 0 to +5 V) Bias is applied.
- the A / D converter 32 outputs the current signals I u and IV obtained by A / D conversion of the voltage signals appearing in the IGBT 29 C and 29 d emitters to the UVW / multi converter 33. I do.
- the conversion unit 3 3 estimates the W-phase current data Iw from the current data Iu, Iv, and the three-phase current data Iu, Iv, Iw. Is converted to two-axis current data I, 1? In a rectangular coordinate system according to equation (1).
- the power conversion unit 33 outputs 1 / 1/5 of the biaxial current data to the a / dq conversion unit 21.
- the h / dq converter 21 obtains the position angle 0 of the mouth 14 of the motor 14 from the estimator 17 at the time of vector control.
- E I and I ⁇ are converted to d-axis current value I d and q-axis current value I q on the rotating coordinate system (d, q).
- the d-axis current value I d and the q-axis current value I q are output to the estimator 17 and the subtracters 19 and 20 as described above.
- Estimation 17 is based on the d-axis current value Id and the q-axis current value Iq. Estimate the position angle 0 and rotation speed ⁇ of 14a overnight, and output to each part.
- the DC excitation is performed by the initial power output unit 31 disposed inside the voltage / phase control unit 26 at the time of startup, and the rotation of the motor 14a is performed.
- the starting pattern is applied and forced commutation is performed.
- the position angle 0 is obvious without being estimated.
- the Hi /? / Dq conversion unit 21 sets the current value I d, with the position angle 0 init obtained from the initial pattern output unit 31 as the initial value immediately before the vector control is started. Calculate and output I q.
- the position angle 0 and the rotation speed ⁇ of the mouth 14a are estimated when the Esteeme 17 is activated.
- the S.T. meter 17 converts the low-angle position angle 0 n to the current value I
- the estimation is based on the correlation between the low evening position angle estimated by the vector operation based on d and Iq and the mouth-evening position angle 0 n-2 estimated one cycle earlier. .
- the phase controller 26 is composed of a speed PI controller 34 and a UVW converter 35.
- the subtracter 51 outputs the result of subtraction between the speed command wref output from the speed command output unit 15 and the estimated speed ⁇ output from the estimator 17 to the speed I control unit 34.
- the speed control unit 34 generates a voltage command (DUTY) and a phase command (PHASE) based on the result of the subtraction, and outputs the voltage command (DUTY) and the phase command (PHASE) to the UVW converter 3'5.
- the speed PI control section 34 is provided with a phase angle 0 output by the estimator 17 in order to perform field weakening control described later.
- the estimated speed ⁇ is given to the subtractor 51 via the movable contact 50 c and the fixed contact 5 Ob of the switching switch 50.
- the U VW conversion unit 35 converts the command value output from the speed PI control unit 34 into a three-phase voltage command value of U, V, and W, and outputs it to the switching switch 25. That is, the voltage / phase control unit 26 is configured to perform the same control as the voltage / phase control method conventionally generally performed in the washing machine.
- the above-described initial pattern output unit 31 is disposed inside the UVW conversion unit 35. Switching between the switching switches 25 and 50 is performed by the switching control unit 52.
- the switching control section 52 controls the switching of the switching switches 25 and 50 based on the duty information of the PWM signal provided from the PWM forming section 27. Further, the switching control unit 52 outputs a command for performing the field weakening control in the high-speed rotation region of the dehydrating operation to the voltage / phase control unit 26 as described later.
- FIG. 3 is a flowchart mainly showing a schematic control content of the microcomputer 36.
- the microcomputer 36 performs the above-described startup processing when, for example, starting the washing operation (step S1). That is, the movable contacts 25 uc to 25 wc of the switching switches 25 u to 25 w are switched by the switching control unit 52 to the voltage / phase control unit 26 side (the fixed contacts 25 ub to 25 wb side).
- the microcomputer 36 causes the initial power output unit 31 to perform DC excitation, initializes the rotational position of the port — evening 14a, and then inputs the voltage command values Vus to Vws. It is applied to the bar circuit 28 to forcibly commutate the module 14 (step S2). Then, the motor starts to rotate, and the rotation speed gradually increases.
- the microcomputer 36 determines, for example, that the rotation speed of the motor 14 has reached 2 O rpm based on the detection signal given by the initial power output unit (step S 3, “YES”), and the switching switches 25 u to 25 w are switched so that the movable contacts 25 uc to 25 wc are connected to the fixed contacts 25 ua to 25 wa.
- the movable contact 50c of the switching switch 50 is switched to the fixed contact 50a.
- output of the target speed command wref is started, and voltage and phase control (PI control) is performed (step S4). That is, the region where the rotation speed is relatively low In this region, it is difficult to perform vector control with high accuracy.
- the microcomputer 36 refers to the rotation speed ⁇ given from the estimator 17 and determines that the rotation speed of the motor 14 has reached 60 rpm (steps S5 and S5). “YE S” :), start vector control (and speed PI control) (step S6). Thereafter, the operation is continued until an instruction to stop the operation is given (step S7). In the meantime, when performing the washing or rinsing operation, the motor 14 is rotated forward and reverse so that the maximum rotation speed reaches 150 rpm.
- the PWM forming unit 27 generates a 16 kHz PWM carrier by the internal countdown output (not shown) of the internal up / down count, and the count value is “0”, that is, the valley of the triangular wave.
- the conversion timing signal is output to the A / D converter 32 at the point when it reaches (see Fig. 5 (a)).
- the 1 ⁇ forming unit 27 compares the voltage command values Vu to Vw output by the //? / UVW conversion unit 24 with the level of the PWM carrier, and calculates the period during which the latter level is higher than the former. Then, the PWM signals V up (+) to V wp (+) are output so that the upper arm IGBTs 29 a to 29 c turn on. Then, the lower arm IGBTs 29d to 29f are turned on with the dead time interposed therebetween while the upper arm IGBTs 29a to 29c are off. ing.
- 6 (a) to 6 (c) are waveform diagrams showing the relationship between the inversion I MINV of the phase current of FIG. 14 and the current I SR flowing through the shunt resistor 30 and the phase voltage.
- the period during which the current I SR flows is the case where the IGBT 29 on the lower arm side turns on and the phase voltage indicates 0 V. Therefore, the valley of the triangular wave indicates the intermediate phase during the period when the lower arm IGBTs 29 d to 29 f are on.
- the A / D conversion section 32 performs A / D conversion at the time when the count value “0” inside the PWM formation section 27 is reached, the lower arm of the inverter circuit 28 is provided.
- the phase current flowing to the side can be reliably sampled.
- the two-phase current value A / D-converted by the A / D converter 32 is used together with the estimated remaining one-phase current value as the U VW /? Converter 33, ⁇ / ⁇ q converter 21 ,
- the current is converted into two-axis current data Ihi, I ⁇ , ⁇ Id, Iq, output to the stymmeter 17 and the subtractors 19, 20 and the estimator
- the position angle 0 and the rotation speed ⁇ are estimated from 17.
- the current Iq is a current flowing in a direction perpendicular to the direction of the secondary magnetic flux of the motor 14, and is a current component that contributes to the generation of torque.
- the current Id is a current flowing in a direction parallel to the direction of the secondary magnetic flux, and is a current component that does not contribute to the generation of torque.
- the speed PI control unit 18 performs q-axis and d-axis current command values I qref, I dref
- the current PI control units 2 2 q and 2 2 d calculate the voltage command values V q and V d based on the difference between the command values I qref and I dref and the detected current values I q and I d. Is output.
- the voltage command values V q, V d are converted to voltage command values V u, V v, V w via the dq / h conversion section 23 and the h /? / U VW conversion section 21 to form a PWM.
- the PWM signal is output to the unit 27, and the PWM forming unit 27 outputs the PWM signals Vup to Vwp to the inverter circuit 28. Then, current is supplied to each phase winding of the motor 14.
- FIG. 7 (a) shows a rotation speed control pattern of the stirrer 6 (motor 14) during the washing or rinsing operation.
- the rotation speed is increased from O rpm to 150 rpm in 0.3 seconds, the state is maintained for 0.5 seconds, and then reduced from 150 rpm to 0 rpm in 0.3 seconds. Then, after a stop period of 0.7 seconds, the rotation direction is reversed. Repeat this pattern.
- FIG. 7B shows an output pattern of the q-axis current command value I qref output from the speed PI control unit 18 according to the rotation speed control pattern shown in FIG. 7A.
- the d-axis current command value I dref is set to “0”, and the motor 14 is driven in an all-field state.
- FIG. 4 is a flowchart showing the control contents of the motor 14 during the dehydration operation.
- the start processing of step A1 in FIG. 4 corresponds to steps S1 to S5 shown in FIG.
- the switching control unit 52 switches the switching switches 50 and 25 to the vector control side (that is, the fixed state). Switch (contacts 50a and 25a) (step A2).
- FIG. 8 shows a diagram corresponding to FIG. 7 during the dehydration operation.
- Fig. 8 (a) during dehydration, if the rotation speed is increased from 0 rpm to 900 rpm for 90 seconds, the state is maintained for 4 minutes, and then from 900 rpm to O rpm Let go down in 15 seconds.
- the target rotation speed is gradually increased toward 900 rpm (steps A3 and A4).
- the torque of the motor 14 is increased by giving the q-axis current command value Iqref, as in the washing or rinsing operation.
- the d-axis current command value I dref is set to "0", and the motor 14 is driven in the all-field state.
- the switching control unit 52 refers to the duty information of the glue1 ⁇ signal supplied from the PWM forming unit 27, and determines when to switch from vector control to voltage / phase control. It is determined whether or not it is (step A5). The timing of switching here is determined by whether or not the duty of the PMW signal has exceeded 90%. If the duty does not exceed 90% ("N0"), return to step A2. If the duty exceeds 90% ("YE S"), switch the switches 50, 25 to the voltage Switch to the phase control side (fixed contact 50b, 25b side) (Step A6), and perform voltage / phase control (PI control) by the speed PI control unit 34.
- PI control voltage / phase control
- the duty of the PWM signal reaches 90% when the rotational speed of the motor 14 has reached about 400 rpm.
- the switching control unit 52 also outputs a switching control signal to the speed PI control unit 34 to perform the field weakening control, thereby achieving the target rotation of the motor 14.
- the number (speed command value wref) is further increased (step A7).
- Field-weakening control is performed by lead angle conduction.
- (h) to (j) show that the efficiency of the module 14 is the maximum for the phases P 0 to P 5 every 60 degrees estimated by the estimator 17.
- the energizing evening is advanced by the phase command PHASE as shown in (k) to (m) and shifted to the phase side, The field is weakened while maintaining the applied voltage for evening 14 at a level based on the voltage command (DUTY) output by the speed PI control unit 34.
- (A) to (g) show the positional relationship (phases P 0 to P 5) between the stay winding and the mouth magnet when the motor 14 rotates. Then, the energization lead angle is set to increase as the speed command value Wref increases, and the induced voltage generated in the motor 14 is suppressed.
- step A8 the switching control unit 52 determines whether or not the rotation speed of the motor 14 has reached 900 rpm, and if it has not reached (" N 0 ”) Return to step A7. If it reaches 900 rpm ("Y E S"), perform the dehydration operation as it is for a predetermined period of time (in this case, 4 minutes) (step A9). Thereafter, the power supply to the motor 14 is stopped, a brake mechanism (not shown) is operated to stop the rotation of the mouth, and the rotary tank 5 is stopped (Step A 10), thereby terminating the process.
- FIG. 10 shows the relationship between the applied voltage (V) and the input power (W) of the motor 14 when driven at the maximum rotation speed of 900 rpm in the dehydration operation.
- Point A in the figure is the case where vector control is applied to motor 14 and field weakening control is performed at the same time. The applied voltage is about 200 V and the input power is about 208 W.
- point B is a case where the field and field weakening control is performed simultaneously with the voltage and phase control of the motor 14. The applied voltage rises to about 220 V and the input power becomes about 18 It has dropped to 5 W.
- the applied voltage to the motor 14 can be further increased, and as a result, the input power becomes 1 This indicates that it could be reduced by about 0%.
- the motor 14 is operated at full field in the low-speed rotation region of the washing, rinsing operation and dehydration operation, and is operated in the high-speed rotation region of the dehydration operation.
- 4 is controlled by weak field operation, and when performing full field operation, the output torque of mode 1 is controlled by vector.
- mode 1 is controlled. 4 is controlled by voltage and phase. Therefore, it is possible to perform the weak field operation after setting the voltage supplied to the motor 14 higher in the high-speed rotation region when performing the dehydration operation, thereby reducing the power consumption and improving the efficiency. Can be enhanced.
- FIGS. 11 to 16 show a second embodiment in which the present invention is applied to a fully automatic washing and drying machine, and the same parts as those in the first embodiment are denoted by the same reference numerals and will be described. The description will be omitted, and only different portions will be described below.
- Fig. 11 shows the vertical side of the drum type washer / dryer.
- a door 62 is provided at the center of the front of an outer box 61 forming an outer shell of the entire drum type washer / dryer, and an operation panel 63 and a detergent input case (not shown) are provided at an upper portion.
- the door 62 is provided with a laundry outlet formed in the center of the front of the outer box 61. Open and close entrance 65.
- the operation circuit unit 66 is provided on the upper rear side (the rear side of the operation panel 63) of the outer box 61, and the control circuit unit 67 is provided on the lower side.
- the water tank 68 is provided inside the outer box 61.
- the water tank 68 has a cylindrical shape, and is disposed in a horizontal axis shape with the axial direction being forward and backward (in FIG. 11, left and right), and is arranged in a forwardly inclined shape, and a pair of left and right (FIG. 11) Only one of them is shown).
- the drum (dewatering tank) 70 is coaxially arranged inside the water tank 68.
- the drum 70 functions as a tub commonly used for washing, dewatering and drying, and has a large number of small holes 71 in almost the entire body (only a part is shown in FIG. 11). ). Further, a plurality of baffles 72 are provided on the inner peripheral side of the body to lift up the laundry inside when the drum 70 rotates (only one baffle is shown in FIG. 11).
- Both the water tank 6'8 and the drum 70 have openings 73 and 74 at the front thereof for taking in and out of laundry.
- the opening 73 of the water tank 68 is connected (watertightly) to the laundry entrance 65 of the outer box 61 by a tongue 75.
- the opening 74 of the drum 70 faces the opening 73 of the water tub 68 so that the laundry entrance 65 can be communicated with the inside of the drum 70.
- a motor 76 for rotating and driving the drum 70 is provided on the back of the water tank 68.
- the mode 76 is a DC-brush-less-type DC brassile-mode, and the station 76 a is attached to the back of the water tank 68.
- the rotating shaft 76c is arranged at the center of the mouth 76b, and communicates with the inside of the water tank 68, and the center of the back of the drum 70 is attached to the front end thereof.
- the water basin 77 is attached to the lower surface of the water tank 68, and a heater 78 for heating the rinsing water is provided inside the basin 77.
- the drain hose 80 is connected to the rear of the basin 77 via a drain valve 79.
- the drain valve 79 is an electric type that is opened by a driving force such as an electromagnet or a motor.
- the blower 81 is disposed on the rear side above the water tank 68, and the heater 82 is disposed on the front side.
- the blower 81 is provided with a blowing blade 84 inside the casing 83, and a motor 85 (see FIG. 12) for rotating the blow blade 84 is provided outside the casing 83.
- the heater 82 is provided with a hot air generator 88 inside the case 87, and the inlet of the case 87 is equipped with a blower and a casing 81. It communicates with the outlet of 3.
- the duct 89 is disposed at the front part of the water tank 68, and one end communicates with the outlet of the case 87 of the heater 82, and the other end faces the water tank 68. .
- the heat exchanger 90 is disposed on the back of the water tank 68.
- the heat exchanger 90 is a water-cooled type in which water in the air passing from below through the inside is exchanged with water to cool, condense, and dehumidify by pouring water from the top. It has a hollow shape.
- the heat exchanger 90 has a shape that is concentrically curved with respect to the rotation shaft 76 c of the motor 6 that is the rotation center of the drum 70. It is arranged to avoid.
- the heat exchanger 90 has an air inlet 91 serving as a water outlet, which is a communication port, at a lower portion thereof, and the air inlet 91 communicates with an inner lower portion of the water tank 68.
- the upper part of the heat exchanger 90 communicates with the casing 83 of the blower 81 by a duct 92.
- the heat exchanger 90, the duct 92, the blower 81, and the heater 82, and the duct 89 constitute a drying unit 93.
- the water injection pipe 94 is suspended above the inside of the heat exchanger 90.
- the water injection pipe 94 has a large number of fountain ports (not shown), for example, arranged in a horizontal line on the lower surface facing the lower part in the heat exchanger 90, and one end thereof is connected to the heat exchanger 90. It is located outside.
- One end of the water injection pipe 9 is connected to one end of a water injection tube 95, and the other end of the water injection tube 95 is connected to a water supply valve 9 disposed at the top of the outer box 61. Connected to 6.
- the water level sensor 97 is located at the top of the outer box 61 (see Fig. 12). ).
- the water level sensor 97 detects the water level in the water tank 68 by air pressure from an air trap (not shown) attached to the bottom of the water tank 68 via an air tube.
- the inside of the water tank 68 communicates with the inside of the drum 70 via the small hole 71, and when water is stored in the water tank 68, the water is also stored in the drum 70 through the small hole 71. You. Therefore, the water level sensor 97 and the air trap and air tube (not shown) also detect the water level in the drum 70.
- the water supply pump 99 is disposed at the top of the outer box 61.
- the water supply pump 99 sucks and discharges water other than tap water, such as bath water, through a water absorption hose (not shown).
- the water injection case 100 is disposed in front of the uppermost part in the outer box 61, and receives water other than tap water discharged from the water supply pump 99 via the connection hose 101.
- the water injection case 100 receives tap water supplied from a water tap (not shown) through a water supply valve 102 (see FIG. 12) through a connection hose 103.
- the detergent-injection case is housed in a water injection case 100, and a front bottom portion of the water injection case 100 communicates with the water tank 68 through a water injection pipe 94. ing.
- FIG. 12 shows the electrical configuration of the microcomputer (control means) 105 and its surroundings.
- the microcomputer 105 is included in the control circuit unit 67. It controls the overall operation of the drum type washer / dryer.
- Various operation signals are input to the microcomputer 105 from an operation input unit 106 composed of various switches of the operation panel 63.
- the operation input unit 106 is included in the operation circuit unit 66, and outputs various operation signals according to a user operation on the operation panel 63.
- the microcomputer 105 receives a water level detection signal from the water level sensor 97, and receives a dirt detection signal from the dirt sensor 107 provided to detect dirt of the washing water in the water tank 68. Is entered.
- the microcomputer 105 receives a temperature detection signal from a temperature sensor (for example, a summer evening) 108 for detecting the temperature in the drum 70, and simultaneously detects the water temperature in the water tank 68.
- a water temperature detection signal is input from a water temperature sensor 1 1 2 for detection.
- the microcomputer 105 is configured to drive the motor 76 based on a current detection signal supplied to the A / D converter 32 and a control program stored in advance. 9 is provided with a drive control signal.
- the configuration in which the microcomputer 105 drives and controls the motor 76 via the inverter circuit 109 is exactly the same as that shown in FIG. 1 in the first embodiment.
- the microcomputer 105 is composed of a display unit 110 composed of various display sections of the operation panel 63, a heating water heater 78 for heating the washing water, a drain valve ⁇ 9, and a blower 81
- a drive control signal is supplied to a drive circuit 1 1 1 for driving a blower module 8 5, a hot air generator 8 8, a water supply pump 9 9, a water supply valve 9 6, 10 2. ing.
- FIGS. Fig. 13 shows a series of steps of the washer / dryer.
- cloth amount detection is performed to estimate the amount of laundry put into the drum 70 by the user, and as a result, the amount of detergent to be put in is displayed on the display unit 60.
- the user looks at the display and puts the detergent in the detergent case.
- the drum 70 is driven forward and reverse to perform the washing process.
- the electricity is supplied at 780 overnight.
- the process proceeds to the rinsing process, and after the “water supply” is performed, the first “rinsing 1” is started. After “Rinse 1”, the “Drain”, “Drain”, “Drain”, and “Rinse” sets are repeated twice, for a total of three rinses. Then, the process shifts to the dehydration process, and when “draining” and “dehydration” are performed, the process shifts to the drying process. As a result, hot air is circulated in the drum 70.
- FIGS. 14 to 16 show the rotational speed control of the drum 70 (motor 76) during washing or rinsing, dehydration, and drying.
- increasing the rotation speed from 0 rpm to 50 rpm in 1 second maintains the state for 3 seconds, and then lowers from 5 O rpm to O rpm in 1 second. . Then, after a stop period of 3 seconds, the rotation direction is reversed. Repeat this pass.
- the motor 76 is operated at all fields in the low-speed rotation region of the washing, rinsing, dehydration operation and the dehydration operation, and the motor is operated in the high-speed rotation region of the deactivation operation.
- the motor is controlled to operate in the weak field in the evening, and the motor is controlled by the torque control of the motor when performing the full-field operation.
- the voltage and phase of 7 6 are controlled. Therefore, the same effect as in the first embodiment can be obtained in the washing / drying machine.
- FIGS. 17 to 20 show a third embodiment in which the present invention is applied to a vertical washing and drying machine.
- FIG. 17 is a longitudinal sectional side view showing a part of the entire configuration of the washing and drying machine in a developed state.
- a lid 1 2 2 for opening and closing the laundry entrance is provided at the center of the upper surface of the main body 1 2 1 forming the outer shell, and an operation panel 1 2 3 having various selection switches is provided on the main body 1 2 1. It is arranged in front.
- the control device (control means) 124 controls the overall washing and drying operations, and is composed of a circuit mainly composed of a computer with a microphone, and the main body of the part where the operation panel 123 is arranged.
- 1 2 1 Provided inside.
- the water tank 125 is formed in a bottomed cylindrical shape having an open upper surface and capable of storing water, and is provided inside the main body 122 through a plurality of elastic support devices 126 (only one is shown). .
- the drain outlet 125a is located at the lowest part of the water tank 125.
- a drainage valve 127 is connected to the drainage outlet 125a, and a drainage hose 128 is connected at one end to the outside.
- the water tank 125 is made of a synthetic resin.
- the water tank 125 is used as a drying chamber by molding a composite material in which glass fiber is added to a base material of polypropylene and 15 wt% or more. Heat-resistant reinforced for use.
- the rotating tub 1229 stores laundry and serves as both a washing tub and a dewatering tub, and is rotatably disposed inside the water tub 125.
- the rotary tank 1229 is made of a metal or a material mainly composed of metal and has a rigid structure.
- the upper surface is opened almost in the same manner as the water tank 125, and a large number of through holes are formed in the entire peripheral wall including the bottom. 1 2 9 a It has a vertical cylindrical shape.
- the stirrer 130 is rotatably provided at the center of the inner bottom of the rotating tank 127, and the balance ring 125 b is fixed to the upper end of the rotating tank 127.
- the rotary tank 12 9 and the stirring body 13 30 are rotationally driven by a driving motor 13 1 mounted on the outer bottom of the water tank 125. Then, through a clutch mechanism (not shown), only the agitator 130 is driven in the washing operation, and both the agitator 130 and the water tank 125 are rotated in the dehydration operation or the drying operation. However, the water tank 125 is controlled to rotate at a lower speed during the drying operation than during the dehydrating operation.
- the module 13 is composed of a brushless type brushless module similar to the first or second embodiment.
- the hot air circulation path 1332 circulates and supplies hot air into the water tank 125, and is located at the back corner of the main body 122 and at the side of the water tank 125 configured as described above from the lower end. It is formed so as to surround the water tank 125 over the upper end.
- the lower end of the hot air circulation path 132 is in open communication with the drainage port 125a below the water tank 125 via the duct 133a.
- the upper end of the hot air circulation path 132 opens at a position facing the top opening of the water tank 125 via the duct 133b.
- the dehumidifying unit 134 is formed between the ducts 133a and 133b.
- the hot air generator is provided with a blower 135 and a drying heater 136 arranged in sequence on the downstream side of the dehumidifying unit 134.
- the hot air circulation path 13 2 is provided with a duct 13 3, a dehumidifying unit 13 4 and a hot air generator,
- the heat exchanging section 13 7 constituting the dehumidifying unit 13 4 is formed in a tubular shape with inner and outer peripheral surfaces forming bellows, and arranged so as to connect ducts 13 3 a and 13 3 b. .
- the cooling fan device 1338 supplies outside air as cool air to the peripheral side of the heat exchange section 1337.
- the short cylindrical wind tunnel 1339 is provided so as to surround an upper portion of the heat exchange section 1337 and form an air passage for guiding the cool air downward. Then, when the outside air taken in by driving the cooling fan device 1338 is guided to the wind tunnel 1339 as cool air, the cool air flows downward on the outer surface of the heat exchange section 1337.
- the air (warm exhaust air) flowing upward in the direction of the arrow shown in the figure in the heat exchange section 137 is cooled, and the condensed water drops to remove moisture from the air.
- the above mechanism constitutes the air-cooled dehumidifier 140.
- the water supply means for injecting the cooling water is provided inside the upper part of the heat exchange section 137.
- the water supply means is composed of a water supply switching valve 14 1 connected to a water supply source such as a water supply, and water passages 14 2 and 14 3 branched at least two from the water supply switching valve 14 1.
- the water passage 144 is a water passage communicating with the inside of the upper part of the heat exchange section 133 to allow a small amount of cooling water to flow, and the water passage 144 faces the water tank 125 to serve as washing water. It is a waterway for supplying a large amount of water. Therefore, a small amount of cooling water is supplied into the heat exchange section 1337 from the water passage 1432, and the water contacts the air moving upward in the heat exchange section 1337. For cooling, moisture in the air is condensed and dehumidified.
- the dehumidifying unit 134 has a configuration provided with two air-cooling type and water-cooling type dehumidifying units.
- the heat exchange section 1337 in this embodiment is formed in a bellows shape, the heat exchange area can be increased and efficient heat exchange can be performed.
- the agitating ribs 144 protrude from an inner lower portion of the heat exchanging section 135. The air flowing through the heat exchange section 13 7 comes into uniform contact with the cooling water by the stirring ribs 1 4 5.
- the dry air dehumidified through the dehumidification unit 13 4 is efficiently heated by the blower 13 5 and the air heater 13 6 that generate warm air, which are located downstream of the unit. It is supplied to water tank 125 through duct 133b.
- the dehumidifying unit 134 and the hot air circulation passage 132 are connected and fixed to the elastically supported water tank 125, though the detailed mounting structure is omitted. Further, the cooling fan device 1388 for taking in outside air is also elastically attached and supported at a position facing the outside of the main body 121.
- the electrical configuration of the washer / dryer is basically the same as that of the second embodiment.
- FIGS. 18 to 20 show the rotation speed control patterns of the motor 131 during washing or rinsing, dehydration, and drying.
- the rotation speed is increased from 0 rpm to 150 rpm for 0.3 seconds', the state is maintained for 0.5 seconds, followed by 150 rpm From 0 to O rpm in 0.5 seconds. Then, after a pause of 0.7 seconds, the direction of rotation is reversed. Repeat this pass.
- the rotation speed is increased to 5 Orpm to maintain that state, and then reduced from 5 Orpm to Orpm. This period is 10 minutes. Then, after a 1-minute suspension period, the direction of rotation is reversed (see (a)). During the stop period, the agitator 130 is alternately inverted at 100 rpm (see (b)). This pattern is repeated. This place In this case, vector control is performed on torque as in the case of the washing or rinsing operation, and PI control is performed on the speed to control the entire field.
- the same effects as those of the first or second embodiment can be obtained even when the present invention is applied to a vertical washing / drying machine.
- the rotation speed, the current value, and the like are merely examples, and may be appropriately changed according to individual designs.
- the switching from vector control to voltage and phase control is not limited to the one based on the 90% duty of the PMW signal, but is optimized according to individual design.
- the standard may be set appropriately.
- the impeller device of the present invention to a washing machine or a washer / dryer, it is possible to reduce power consumption and improve the efficiency of the motor.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Power Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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KR1020047009054A KR100758405B1 (ko) | 2001-12-13 | 2002-11-07 | 세탁기의 인버터 장치 및 세탁건조기의 인버터 장치 |
US10/498,249 US7579798B2 (en) | 2001-12-13 | 2002-11-07 | Inverter for washer and inverter for washer-drier |
EP02780049.9A EP1464749B1 (en) | 2001-12-13 | 2002-11-07 | Inverter of washing machine and inverter of washing machine/dryer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001-380176 | 2001-12-13 | ||
JP2001380176A JP3651595B2 (ja) | 2001-12-13 | 2001-12-13 | 洗濯機のインバータ装置及び洗濯乾燥機のインバータ装置 |
Publications (1)
Publication Number | Publication Date |
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WO2003050341A1 true WO2003050341A1 (fr) | 2003-06-19 |
Family
ID=19187107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/011635 WO2003050341A1 (fr) | 2001-12-13 | 2002-11-07 | Inverseur pour lave-linge et inverseur pour lave-linge/seche-linge |
Country Status (7)
Country | Link |
---|---|
US (1) | US7579798B2 (ja) |
EP (1) | EP1464749B1 (ja) |
JP (1) | JP3651595B2 (ja) |
KR (1) | KR100758405B1 (ja) |
CN (1) | CN100408749C (ja) |
TW (1) | TWI254756B (ja) |
WO (1) | WO2003050341A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
CN1604976A (zh) | 2005-04-06 |
KR100758405B1 (ko) | 2007-09-14 |
TWI254756B (en) | 2006-05-11 |
JP3651595B2 (ja) | 2005-05-25 |
KR20040068224A (ko) | 2004-07-30 |
US20050160771A1 (en) | 2005-07-28 |
EP1464749A1 (en) | 2004-10-06 |
JP2003181187A (ja) | 2003-07-02 |
US7579798B2 (en) | 2009-08-25 |
EP1464749A4 (en) | 2008-01-16 |
EP1464749B1 (en) | 2013-07-03 |
CN100408749C (zh) | 2008-08-06 |
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