CN1280415A - Washing mechine - Google Patents

Abstract

The washing machine of this invention is to control the voltage supplied to an inverter circuit for driving the motor with high reliability so as to increase the efficiency. The solution of this invention is to apply a partial voltage of the terminal voltage of a capacitor to a DC voltage control circuit for controlling the voltage supplied to the inverter circuit, and controlling the charging to the capacitor so that this voltage is a reference value. The control circuit controls the distributing the aforementioned partial voltage, thereby controls the terminal voltage of the capacitor.

Description

Washing machine

The present invention relates to the washing machine that general family uses.

The general such formation of washing machine, it has the Vidacare corp that is arranged on the washing and dewatering bucket that can rotate in the outer bucket, the stirring wheel that can rotate that is arranged on this washing and dewatering bucket bottom and driving washing and dewatering bucket and stirring wheel rotation, utilize this Vidacare corp to drive aforementioned washing and dewatering bucket and stirring wheel selectively, washings thereby agitator treating is held concurrently in the dehydration barrel, carry out washing procedure and rinsing process, make washing and dewatering bucket high speed rotating then, washings is carried out centrifugal dehydration.

The general usability induction motor of the Vidacare corp of washing machine proposes to utilize the scheme of inverter to the motor power supply recently as power source.The washing machine of inverter control for example have Japanese patent of invention to disclose 1997 No. 121584 patent that communique disclosed.

In addition, also propose a kind of scheme of using brushless motor as the washing machine of motor, can realize the washing and the dehydration running of multiple mode, aforementioned washing machine generally adopts microcomputer to control.

In Vidacare corp in the past, be to make the supply voltage of inverter circuit keep certain, and the duty of change switch element is recently controlled motor output.For washing and the dehydration running that realizes aforementioned multiple mode, must accounting for of inner control inverter circuit hold ratio on a large scale.But problem is, if carry out such control, can increase the switching loss of inverter control circuit, increases heating and power consumption, and efficient is reduced.

In addition, in washing machine in the past, motor is arranged on the washing machine bottom, and Vidacare corp is arranged on washing machine top, connects motor and Vidacare corp with power line.Because power line is longer, therefore follow the aforementioned switches effect and large power, electrically that size changes fails to be convened for lack of a quorum and produces very big interference, propagate towards periphery, may to around electric equipment produce baneful influence.In addition, aforementioned interference also may exert an influence and causes misoperation the mode configuration switch.

One object of the present invention is to improve the efficient of washing machine inverter control circuit, so that control motor expeditiously.

Other purpose of the present invention is to provide the influence that can reduce aforementioned interference, realizes the washing machine of various application controls with the high reliability circuit.

The present invention is a kind of washing machine, have washings is washed the washing tube of usefulness, the motor that is arranged on the stirring wheel that aforementioned washing tube inside can rotate freely and makes aforementioned stirring wheel rotation, comprise washing procedure and rinsing process at interior multiple drive manner

Have inverter circuit that ac voltage rectifier is powered with the dc voltage generating circuit that produces direct voltage, the direct voltage of accepting aforementioned dc voltage generating circuit output and to the aforementioned electric motivation and the control device of controlling aforementioned washing machine running and aforementioned dc voltage generating circuit

As aforementioned multiple drive manner, described control device has for one of the processing active force power in the same processing action or processing time length, sets the means of 2 grades of drive manners at least,

Aforementioned dc voltage generating circuit has the capacitor that keeps the supply contravarianter voltage and controls the dc voltage control circuit that aforementioned capacitor is charged,

Aforementioned dc voltage control circuit constitutes like this, and it accepts the branch pressure voltage of capacitor terminal voltage, and control makes aforementioned branch pressure voltage reach reference voltage to the charging of aforementioned capacitor,

Aforementioned control device is according to aforementioned drive manner, is added in aforementioned branch pressure voltage on the aforementioned dc voltage control circuit by change, controls aforementioned capacitor voltage, changes the direct voltage of supplying with aforementioned inverter circuit.

Further feature of the present invention is, interior being equipped with is arranged on aforementioned washing machine bottom to the aforementioned dc voltage generating circuit of aforementioned electric motivation power supply and the 2nd control device of inverter circuit, will according to aforementioned drive manner to the 1st control device that the 2nd control device sends instruction be configured in the washing and dewatering bucket above.

The present invention is a kind of washing machine, it is characterized in that, a plurality of console switchs with one of the predefined multiple drive manner of selection that is arranged on washing machine top usefulness, be arranged on the washing tube of washing machine inside, be arranged on the stirring wheel of washing tube inside, be arranged on the motor below the aforementioned washing tube, and the control device of control washing machine, utilize aforementioned control device that the aforementioned electric motivation is controlled, utilizing the aforementioned electric motivation that aforementioned stirring wheel is rotated washs, aforementioned washing machine is controlled like this, when making 2nd control switch of operation among aforementioned a plurality of console switchs, it is fast that the rotating speed of the aforementioned stirring wheel the when rotating ratio of aforementioned stirring wheel is operated the 1st console switch in aforementioned a plurality of console switch is wanted

As aforementioned multiple drive manner, in same processing action, have about handling at least 2 grades of drive manners of one of active force power or processing time length, the processing active force that aforementioned the 2nd console switch is set than aforementioned the 1st console switch is strong or the processing time is long,

Aforementioned control device have the running control circuit that produces the 1st and the 2nd control signal, with the rectification circuit of alternating current rectification, accept aforementioned rectification circuit output electric current and according to the dc voltage output circuit of aforementioned the 1st control signal output dc voltage, with the direct voltage of aforementioned dc voltage output circuit output as input and the inverter circuit the aforementioned electric motivation controlled according to aforementioned the 2nd control signal.

The height when output voltage of aforementioned dc voltage output circuit is than aforementioned the 1st console switch of operation when making aforementioned the 2nd console switch of operation.

In the present invention, except the inverter circuit that motor is controlled, also be arranged on the interior dc voltage control circuit that the supply voltage of motor is controlled in addition on a large scale.Then, the dc voltage control circuit that the voltage of supplying with inverter circuit is controlled is accepted the branch pressure voltage of capacitor C terminal voltage, and the charging of capacitor is controlled, and makes this voltage reach fiducial value.Control circuit is controlled the dividing potential drop of aforementioned branch pressure voltage, and control capacitor terminal voltage in view of the above.According to the present invention, can be provided at various occupation modes and all have high efficiency washing machine.

In addition, in the present invention, the computer of not only motor, and inverter circuit and control inverter also be configured in washing tube below, in addition, control washing machine computer configuration on washing tube.Like this, the distance that high-power electric current flows through can be shortened, the influence of interference can be reduced.Thereby, according to the present invention, can provide reliability high washing machine.

Figure 1 shows that the concise and to the point vertical profile end view of the single container washing and extracting machine basic comprising of the present invention's one example.

Fig. 2 is the single container washing and extracting machine circuit block diagram of Fig. 1.

Figure 3 shows that the main control unit of Fig. 2 and the allocation plan of sub controlling unit.

Figure 4 shows that the single container washing and extracting machine control panel figure of Fig. 1.

Figure 5 shows that the inner vertical profile end view that constitutes of Vidacare corp in the single container washing and extracting machine of Fig. 1.

Fig. 6 is the end view after the part in the Vidacare corp of Fig. 5 is amplified, and is depicted as the state that drives washing and dewatering bucket and stirring wheel rotation.

Figure 7 shows that and utilize the V/F of sinusoidal wave PWM control to decide one of control waveform example.

The basic controlling process chart of the washing that Fig. 8 carries out for main microcomputer in the washing machine of the present invention's one example, rinsing, dehydration procedure.

VD (capacitor terminal voltage) the basic controlling performance plot that the desirable direct voltage generative circuit that Fig. 9 controls usefulness for turning round in the single container washing and extracting machine of the present invention's one example has.

Figure 10 is the motor vector control key diagram of example for the washing machine of the present invention's one example during with the dehydration running.

Figure 11 is that motor 51 produces the polar plot under the operating condition of decelerative forces.

Figure 12 is that the rotating speed of motor 51 is in the polar plot under the lower decelerate state.

Figure 13 shows that the state of record phase place δ.

Figure 14 shows that the braking control action flow process of the present invention's one example.

Figure 15 is the power supply detailed circuit diagram of the present invention's one example.

Figure 16 is the control device power supply detailed circuit diagram of the present invention's one example.

Corresponding actions flow chart when the AC power that Figure 17 shows that the present invention's one example is stopped power supply.

Figure 18 is the detailed circuit diagram of dc voltage generating circuit 29a in the present invention's one example.

Figure 19 is the action specification figure of dc voltage generating circuit 29a in the present invention's one example.

Figure 20 lays down the vertical view that washing tube and following motor thereof etc. are seen from above for the washing machine in the present invention's one example.

Figure 21 lays down the upward view that base plate is seen from below for the washing machine in the present invention's one example.

Figure 22 is the top view of the 2nd control device 29 in the present invention's one example.

Figure 23 is the end view of the 2nd control device 29 in the present invention's one example.

Figure 24 is the interior view of the 2nd control device 29 in the present invention's one example.

The following describes the invention process form.Figure 1 shows that the vertical profile end view of the washing machine of the present invention's one example.Be single container washing and extracting machine basic comprising shown in this example as an example of washing machine.

1 is washing machine shell, is the casing of washing machine that will be surrounded around the internal mechanism.2 for being arranged on the washing tube of washing machine shell inside, specifically, is the washing and dewatering bucket.Top edge at washing tube or washing and dewatering bucket (below be called washing and dewatering bucket) has fluid balance ring 3.Bottom inside at washing and dewatering bucket 2 has the stirring wheel 4 that can rotate freely.5 is outer bucket, and its inside has the washing and dewatering bucket 2 that can rotate freely.The Vidacare corp 6 that will have a motor utilizes the installation base plate 7 of steel plate system to be installed in the bottom outside of outer bucket 5, and four jiaos are utilized vibration damping support apparatus 8 supporting of dangling from the upper end of shell 1.Inside about Vidacare corp 6 constitutes and will narrate in the back.

The loam cake 9 that is provided with clothes inlet 9a be arranged on washing and dewatering bucket 2 above.Above-mentioned loam cake 9 embeds the upper, open end edge of casing 1 to cover this upper opening, and front panel 10 and rear board 11 1 are reinstated installation screw (diagram is omitted) and be installed on the casing 1.

Mains switch 13, console switch are housed are input switch group 14 in the front panel box 12 that forms below the place ahead of loam cake 9 and front panel 10 (14a～n), display element group 15 (15A and 15B), is the 1st control device 17 according to the level sensor 16 and the main control unit of the water level generation water level signal in the outer bucket 5.

Input switch group 14 as shown in Figure 4, have timer preset switch 14a, water yield configuration switch 14b, washings degree of fouling (dirty many, standard is dirty, dirty few) configuration switch 14i～k, dry mark dress material washing configuration switch 14l, bed clothes washing configuration switch 14m, starting switch 14n etc.The switch that also has strong and weak selector switch of washing or rinsing current and expression cloth matter in addition.

In the present embodiment, switch 14k, 14l, 14m etc. are called the 1st console switch, switch 14i, 14j etc. are called the 2nd console switch.

The rear of loam cake 9 and in the back plate 11 below rear board box 18 is set.The water-suppling electromagnetic valve 21 that water inlet side links to each other with tap 19, water outlet side links to each other with water filling port 20 is housed in this rear board box 18.Water filling port 20 discharges water towards the opening of washing and dewatering bucket 2.The pump of water such as bathing pool water being supplied with washing and dewatering bucket 2 usefulness by pump also is set in the plate box 18 in the back.In addition, be directed to water filling port 20 behind the filter of water from aforementioned water-suppling electromagnetic valve 21 by the removal metal ion.The clothes inlet 9a that loam cake 9 forms has the structure that utilizes cover plate 22 energy free switchs and cover.

The discharge outlet 5a of the bottom of bucket 5 formation outside links to each other with scupper hose 24 by drain solenoid valve 23.In addition, the below of bucket 5 is provided with gas dome 5b outside, and this gas dome 5b links to each other with aforementioned level sensor 16 by tracheae 25.Level sensor 16 utilizes the said structure sensed water level, and the signal of representing water level is inputed to the 1st control device 17.

The synthetic resin system base 27 of footing 26 being installed at four jiaos is housed below casing 1.Aforementioned Vidacare corp 6 usefulness covers 28 cover with waterproof.This Vidacare corp 6 has drive motor.In this example, controlled good brushless motor is set.The defeated control device that helps that inverter circuit is housed in the utilization is that 29 pairs of these motor of the 2nd control device are powered.

The 2nd control device 29 is powered to motor from the inverter circuit of interior dress according to the instruction from aforementioned the 1st control device 17.The 1st control device 17 be configured in washing and dewatering bucket 2 and Vidacare corp 6 above.

In addition, the 2nd control device 29 be arranged on washing and dewatering bucket 2 below, by such formation, can guarantee that water and high pressure can not cause safety problem.Promptly in the 1st control device 17, be provided with the microcomputer of controlling, be arranged on the top of the washing and dewatering bucket 2 that carries out waterproofing protection easily.And the 2nd control device 29 is owing to have the dc voltage generating circuit of supplying with high pressure, therefore is configured in the below away from the washing and dewatering bucket 2 of people's position.In the present embodiment, be arranged on the plastic base 27, more improved fail safe.

Brushless motor 51 is housed as driving power source in the Vidacare corp 6.

Fig. 2 is the control device of washing machine.This control device is made of the 1st control device 17 and the 2nd control device 29, and Fig. 2 is its concrete inner block diagram that constitutes.In the figure and since the explanation be the formation of the control aspect of relevant The whole control, the Therefore, omited among aftermentioned Figure 15 with the mains switch (console switch) 13 and the 1st relay and the 2nd relay that are described in detail.Also omit in addition among Figure 16 the power circuit that illustrates.

The 1st microcomputer (below be called main microcomputer) 17a and the 2nd microcomputer (below be called supplementary microcomputer) 29h constitutes control circuit, produce the 1st control signal, described the 1st control signal is the signal that the magnitude of voltage of being supplied with the direct voltage of inverter circuit 29b by dc voltage generating circuit 29a described later is controlled.According to the terminal voltage of the 1st control signal control capacitor C, promptly supply with the voltage of inverter circuit 29b.Above-mentioned control circuit produces the 2nd control signal.The action of the 2nd control signal control inverter circuit 29b, the pulse duration of brushless motor 51 is supplied with in control.In addition also according to the direction of rotation of the 2nd control signal control brushless motor 51 (just change and reverse).

About low-voltage power circuit and the mains switch 13 that microcomputer in the 1st control device 17 and the 2nd control device 29 and other circuit working are used, then omit and illustrate.

The 1st control device 17 is to be that the center constitutes with main microcomputer 17a, has the drive circuit 17b-17d that semiconductor AC switch element (FLS) that the solenoid 47a power supply of water-suppling electromagnetic valve 21, drain solenoid valve 23 and engaged clutch mechanism 47 is controlled constitutes and prevents the line filter 17e that High-frequency Interference is leaked to civilian power circuit.

Main microcomputer 17a is according to the control and treatment program of packing in advance, be taken into the input signal of input switch group 14 and level sensor 16, communicate with the 2nd control device 29, display element group 15, drive circuit 17b～17d, control capacitor charging are the dc voltage control circuit 29c of capacitor terminal voltage and the inverter circuit 29b that brushless motor 51 is powered controlled.

The 2nd control device 29 has dc voltage generating circuit 29a and 3 phase inverter circuit 29b, and the power supply of brushless motor 51 is controlled.Promptly the pulse voltage of 29 pairs of supply brushless motors 51 of the 2nd control device or the size and the time of electric current are controlled.Above-mentioned size is magnitude of voltage or current value.In this example, be to add voltage, by such supply brushless motor 51 electric currents.Above-mentioned voltage is the voltage of supplying with inverter circuit 29b according to capacitor C, and pulse duration is that time that voltage adds utilization is controlled by the 2nd signal that inverter driving circuit 29g adds to inverter circuit 29b.

The direct voltage of supplying with inverter circuit 29b utilizes the 1st control signal of supplementary microcomputer 29h output to control.Utilize the physical circuit of the 1st control signal control direct voltage to have dc voltage control circuit 29c, output voltage feedback resistance 29d and voltage control resistance 29e.

Dc voltage generating circuit 29a has that the rectification circuit of output dc voltage is diode bridge rectifier circuit DB after the rectification with carrying out from the civilian AC power of plug 1502 input.This dc voltage generating circuit 29a constitutes like this, it is the boost converter circuit that a kind of switching regulaor that charging circuit as capacitor C works is housed in it, the electromagnetic energy that switch element S1 conduction period is stored among the reactance coil L disconnects by this switch element S1, change voltage into, be superimposed upon on the input voltage, supply with capacitor C by the voltage after will boosting like this, store electric charge.

In addition, diode D1 stops the electric charge reverse flow that is stored among the capacitor C, makes VD stable.Amount of boost changes with the ON time of the switch element S1 ratio with respect to conducting/break period.Utilize diode bridge rectifier circuit DB to be about 140V through the direct voltage that bridge rectifier obtains.This dc voltage generating circuit 29a can control this commutating voltage, adjustable output in the output voltage range up to about 300V.Switch element S1 preferably adopts the semiconductor element from turn-off function of having as IGBT or GTO.

The dc voltage control circuit 29c that controls this dc voltage generating circuit 29a is with reference to utilizing output voltage feedback resistance 29d and voltage control resistance 29e with the output voltage of the dc voltage generating circuit 29a detection voltage of dividing potential drop feedback in addition, to the opening of switch element S1/and time ratio control, make this detection voltage reach setting.In this example, the detection voltage that the setting of aforementioned detection voltage obtains when being equivalent to regulation output voltage (being 155V in this example).The minimum voltage of the supply inverter circuit 29b that the 2nd control signal of utilizing supplementary microcomputer 29h to export is controlled, about 155V in this example.If consider soft washing etc., then the minimum service voltage that preferably can provide is about 140V～170V.

Three-phase inverter circuitry 29b has the three-phase bridge circuit that is made of switch element S2 and inverse parallel diode D2, with the output voltage of aforementioned dc voltage generating circuit 29a as input, to the threephase stator winding 52b power supply of aforementioned brushless motor 51.Switch element S2 preferably adopts the semiconductor element from turn-off function of having as IGBT or GTO.The power supply that utilizes this three-phase inverter circuitry 29b is under the control of supplementary microcomputer 29h, by the Push And Release that inverter driving circuit 29g comes control switch element S2, controls like this.In order to make brushless motor 51 energy noiselesss, high-efficient operation, preferably sinusoidal wave power supply.Three-phase inverter circuitry 29b utilizes sinusoidal wave PWM control, has realized sinusoidal wave power supply, utilizes pressure limiting PWM control in addition, produces to suppress overcurrent.

Sinusoidal wave PWM control has dual mode, and a kind of is to make the effective value of output voltage V keep certain certain sinusoidal wave PWM control mode of V, and another kind is the certain sinusoidal wave PWM control mode of V/F that makes the relation maintenance certain value of output voltage V and frequency F.The certain sinusoidal wave PWM control mode of V can realize utilizing to greatest extent the power supply of three-phase inverter circuitry 29b input voltage, and if adopt the certain sinusoidal wave PWM control mode of V/F, then can realize the high efficiency power to brushless motor 51.

Utilize the configuration of the main control unit 17 and the sub controlling unit 29 of Fig. 3 key diagram 2 below.Main control unit 17 is arranged on the next door of the clothes inlet 9a of washing tube 2 tops.Sub controlling unit 29 be arranged on motor that washing tube below is provided with again below.This is because 1. wish to produce dc voltage generating circuit 29a or inverter circuit 29 as close as possible motor 51 configurations of disturbing, 2. wish that the dc voltage generating circuit 29a will produce high pressure rotates near motor 51,3. wish high-pressure generating circuit and guidance panel away from rotation.

Utilize power line 2002 civilian power supply to be caused main control unit 17 from plug 1502.Be provided with line filter 17e, the 1st and the 2nd relay 1520 and 1522, power circuit 1512 and main microcomputer 17a etc. in the main control unit 17.The 1st control device 17 (main control unit 17) links to each other with various leads with the 2nd control device 29 (sub controlling unit 29).Being about to 4 kinds of distributions is bundled into a branch of from installing the turnover of 29 shells as 2302.The 100V power line 2304 and the control order wire 2306 of drawing from the 1st control device 17 are arranged in the distribution 2302.Also have in addition to the motor line 2308 of motor 51 windings power supply and and Hall element 55 between connecting line 2310.

Figure 5 shows that the Vidacare corp shown in Figure 16 inner vertical profile end views that constitute.Fig. 6 is the end view that the part of Fig. 5 is amplified.This Vidacare corp 6 constitutes like this, and promptly the driving rotating shaft with washing and dewatering bucket 2 and stirring wheel 4 is the axle center, in vertical direction reduction gear, engaged clutch mechanism 47 and reversible rotary-type brushless motor 51 concentric arrays is disposed.

Screw 31 is installed in the reduction gear utilization and connecting flange is installed together, in the reducing gear shell 32a in two and the 32b inboard that are installed on the base 7, utilizes the driving rotary axis 34 of ball bearing 33a and 33b supporting inside and outside dual structure.This driving rotary axis 34 has the outside rotary axis of hollow and is configured in the interior inboard rotary axis of this hollow.

Outside rotary axis is that the rotation with motor is directly passed to washing and dewatering bucket 2 to drive the rotary axis of this washing and dewatering bucket 2.Outside rotary axis is to extend out to the outside of shell 32a from ball bearing 33a inboard vertically and pass outer bucket 5, its leading section promptly outside output shaft 35a be connected with washing and dewatering bucket 2, make its rotation.Be under the rotation status at washing and dewatering bucket 2, ring gear 35f and planetary gear 36i, support 36h, inboard output shaft 36c rotate simultaneously, and then stirring wheel 4 rotates with washing and dewatering bucket 2 same speed.The cylindrical portions may of axially stretching out downwards outside shell 32b is formed with the spline 35b that engages with engaged clutch mechanism 47.Be formed with outside power shaft 35d and the gear housing 35e mechanical bond of ring flange 35c at the shell 32b of spline 35b medial end.The inner periphery of gear housing 35e is fixed with ring gear 35f.Several planetary gears 36i is set between ring gear 35f and sun gear 36f.Planetary gear 36i forms the reducing gear that slows down and transmit rotation with ring gear 35f and sun gear 36f.This reducing gear is contained among the gear housing 35e.

The inboard rotary axis that is located at this rotary axis inboard, outside is the rotary axis that passes to stirring wheel 4 after motor speed is slowed down, drives this stirring wheel 4, utilizes sealing 37, alloy bearing 38a and 38b, the circle (clamp nut) 39 that is fixedly clamped to be arranged to watertight and anticreep state in aforementioned outside output axial region 35a.Inboard rotary axis reaches in the washing and dewatering bucket 2 from the front end of outside output shaft 35a, utilizes installation screw 36a to be installed in the outer end portion that stirring wheel 4 is housed, and inboard rotary axis has inboard output shaft 36c, inboard power shaft 36g and planetary gear 36i.The structure of inboard output shaft 36c is that the inboard from outside output shaft 35a is communicated in the gear housing 35e, is connected with above-mentioned planetary gear reducing mechanism, and its inner end portion is formed with spline 36b.Inboard power shaft 36g utilizes ball bearing 40a and 40b to be bearing in the inboard of outside power shaft 35d.Forming with fixed screw 36e fixed motor in the outer end portion of the inboard power shaft 36g that stretches out with protruding state from the outer end of outside power shaft 35d is the 36d of setting-in portion of motor rotor.The inner side of inboard power shaft 36g in stretching into gear housing 35e partly forms sun gear 36f.Formation in the gear housing 35e be the axle of planetary gear 36i be bearing in the tight support 36h of the spline 36b embedding of aforementioned inboard output shaft 36c on.Planetary gear 36i and aforesaid gears 35f and 36f engagement rotation, planetary gear 36i passes to aforementioned brackets 36h with revolving force.The rotating speed of gear 36f is through slowing down, and planetary gear 36i rotates with deceleration regime, therefore transmits revolving force after slowing down.

Ball bearing 40a and 40b are pressed into its outer ring and are installed in the power shaft 35d of the outside, so that the high accuracy supporting becomes the inboard power shaft 36g that motor is brushless motor 51 armature spindles.Inboard power shaft 36g as described later, to stretch out the rotor of state support brushless motor 51, therefore support this inboard and change the bearing service wear of the 36g axis of rolling little, that be suitable for radially bearing big load over to and be subjected to, just use representational ball bearing 40a and 40b.But, also can use roller bearing instead.

The formation of brushless motor 51 is such, lower surface at shell 32b utilizes installation screw 42 that motor cases 43 are installed across insulating component 41, the motor casing 43 that makes such maintenance state of insulation is under shed, embed stator 52 from openend, utilize several projections 43a and curved pawl 43b to be fixedly clamped.Rotor 54 embeddings relative with this stator 52 tightly on the rotor setting-in 36d of portion that forms on the inboard input 36g, utilize the hold-down nut 46 that is tightened on the set bolt 36e to be fixed.

More particularly, in this example, brushless motor 51 is coiling stator winding 52b on stator core 52a, constitutes stator 52, and stator core 52a is embedded motor casing 43, utilizes projection 43a and curved pawl 43b to be fixedly clamped.Distance piece 53 is in order to remedy the poor of size between this stator core 52a axial dimension and projection 43a and curved pawl 43b.

Rotor 54 is installed permanent magnetism magnetic pole 54b in the periphery of rotor core (yoke) 54a, utilizes the installation propeller boss 54c of the insulating resin system that is shaped with their integraty, and rotor 54 is installed in the motor rotor setting-in 36d of portion on the inboard power shaft 36g.

The engagement jog 54d that the engagement projections 47f that the slide block 47c of engaged clutch mechanism 47 is formed embeds utilizes ester moulding formation one with this installations propeller boss 54c on propeller boss 54c is installed.The size that propeller boss 54c formation is installed is can embed to be installed on the motor rotor setting-in 36d of portion, and interior distolateral fastening end is exposed rotor core 54a, and becket 54e is imbedded in distolateral outside fastening end.

The installation propeller boss 54c of rotor is owing to make motor rotor setting-in portion for the inboard axial region of importing of the special use of short size, so also can form short installation propeller boss.In addition, permanent magnetism magnetic pole 54b protrudes in stator winding 52b laterally, is oppositely arranged magnetic pole detecting element 55 with the rotational trajectory of this outstanding magnetic pole, by coming the position of rotation of detection rotor 54 like this.This magnetic pole detecting element 55 is installed on the case 48.

The formation of brushless motor 51 is that the magnetic pole 54b by detection rotor 54 controls power supply to each phase of this stator winding 52b with respect to the relative position of each phase of stator winding 52b, describes in detail and omits.Engaged clutch mechanism 47 utilizes outside rotary axis 35 is combined with motor rotor 54 engagement chuckings, the revolving force that just changes and reverse of rotor 54 is passed to this outside rotary axis 35 make its rotation, perhaps remove the engagement chucking, this outside rotary axis 35 is stopped the rotation and fix.

In order to reduce the axial overall dimensions of Vidacare corp 6, this engaged clutch mechanism 47 utilizes in aforementioned installation screw 42 generals has the ring electromagnet iron core 47b of annular magnet coil 47a to tighten the inboard that is installed in motor casing 43 together, to surround outside input axial region 35d.The insulating resin system slide block 47c that can engage slidably vertically on the spline 35b that the power shaft 35d of portion in the outside forms utilizes helical spring to depress, to engage with the engagement jog 54d of aforementioned rotor 54, utilize the electromagnetic force of aforementioned electromagnetic coil 47a, with helical spring 47d to depress power opposite, 47c pulls on slide block, by such releasing engagement, be adsorbed on the electromagnetic core, stop the rotation.

Slide block 47c is provided with the iron suction piece 47e that utilizes aforementioned electromagnetic 47b unshakable in one's determination to attract that forms one by ester moulding, is formed with by ester moulding and embeds the engagement projections 47f that aforementioned engagement jog 54d is engaged with.

When the suction piece 47e of slide block 47c is held by electromagnetic core 47b, for this slide block 47c chucking is stopped the rotation, on the adsorption plane of electromagnetic core 47b, form the clamping slot 47b1 of some radiation-like, and inhaling some radiation-like chucking raised line 47e1 that form the aforementioned clamping slot 47b1 of embedding on the piece 47e.The clamping slot 47b1 that forms, its side wall surface that will tighten raised line 47e1 chucking is along the inclination broadening of depth direction with 1～2 degree, and the chucking raised line 47e1 that forms, the side that the side wall surface of itself and clamping slot 47b1 connects is to the inclination broadening of top orientation with 1～2 degree, by like this, when the engagement chucking, it is produced stop the component of extracting on the direction.

The lower end setting-in of motor casing 43 covers case 48.The rotation detecting element (magnet-sensitive element) 55 of rotation sensor is housed in this case 48, the rotational trajectory of this rotation detecting element 55 with the permanent magnet 54b of aforementioned rotor 54 is oppositely arranged.

Such Vidacare corp 6 utilizes installs the bottom outside that screw 50 is installed in mounting seat 7 in outer bucket 5.In addition, the outside of this Vidacare corp 6 utilizes the outer cover of installing with this Vidacare corp 6 by installation screw 50 28 to be covered.

Power supply to this brushless motor 51 is to utilize the 2nd control device 29 to carry out PWM (pulse-width modulation) control and PAM (pulse voltage modulation) control according to the instruction that the 1st control device 17 is exported.About PAM (pulse voltage modulation), will describe in detail in the back.

Figure 7 shows that one of the certain control waveform figure of V/F that utilizes sinusoidal wave PWM control example below.In order to make V/F is certain, shown in (a), sine wave and triangular wave are compared, with the triangular wave is benchmark, sinusoidal wave peak value is changed, at this moment obtain the spike train waveform shown in the figure (b), this spike train waveform is used for the switch control of the switch element S2 of three-phase inverter circuitry 29g, just can realize near sinusoidal ripple PWM control mode.

Utilize the integration type time pulse unit (ITU) of supplementary microcomputer 29h to generate triangular wave, and sine wave to be internal data as supplementary microcomputer 29h generate.In order to improve triangular wave carrier frequency (for example 16KHz), the sinusoidal wave internal data of each frequency is not to carry out computing at every turn, but in advance the operation result of each frequency is preserved use as form.

The certain sinusoidal wave PWM control of V is that the sinusoidal wave size with the triangular wave comparison is set at respect to the such certain value of the getable maximum output voltage of input voltage, by realizing utilizing to greatest extent the sine wave power supply of input voltage like this.

In Fig. 2, supplementary microcomputer 29h is according to the instruction of main microcomputer 17a output, with reference to the rotating position signal of the detection signal of exporting according to magnetic pole detecting element 55 from the rotor 54 of position detecting circuit 29f output, to corresponding stator winding power supply, like this inverter driving circuit 29g is controlled.Supplementary microcomputer 29h is controlling resistance 29e also, with the control of the VD that changes dc voltage generating circuit 29a.In addition, the electric current that flows through motor 51 windings utilizes current detection circuit 205 to detect.

Dc voltage control circuit 29c controls dc voltage generating circuit 29a as previously mentioned, makes detection voltage reach setting (being equivalent to output voltage is 155V).And the initialization circuit constant, the detection voltage when making under regulation output voltage (155V) whole control ends with voltage control resistance 29e be in open-circuit condition reaches setting.Thereby supplementary microcomputer 29h makes whole control ends of voltage control resistance 29e be in open-circuit condition, controls direct voltage adjusted circuit 29c so that the output voltage that obtains stipulating (155V) by such dc voltage control circuit 29c.When output voltage was risen, supplementary microcomputer 29h reduced any control end short circuit (connection) of voltage control resistance 29g by making the detection voltage that feeds back to dc voltage control circuit 29c like this.

So, dc voltage control circuit 29c controls the output voltage that makes dc voltage generating circuit 29a and rises, and detects voltage so that make the detection voltage of decline rise to regulation.In this example,, make the output voltage of dc voltage generating circuit 29a form multistage variation (for example 155V, 185V, 190V, 210V, 230V, 270V) by the control end of voltage control resistance 29e being opened a way and the control of short circuit.In this enforcement shape, the 1st control signal with which resistive-open of voltage control resistance 29e is represented.Bias voltage as dc voltage control circuit 29c promptly is provided.In addition, also can adopt generation to replace preceding method as the method for the 1st control signal of digital signal.At last as long as the switching time (perhaps also can be duty ratio) of control semiconductor switch S1 the voltage of the two ends appearance hope of capacitor C is got final product.

In case send the instruction of washing since one group of input switch 14, then main microcomputer 17a sets manual or automatic mode of washing and dewatering type, the processing of the mode of washing of setting and each drive manner of dewatering type according to the instruction of one group of input switch, 14 outputs.Mode of washing constitutes by detecting operation, washing procedure and rinsing process as shown in Figure 9, and dewatering type is made of dehydration procedure.

Figure 8 shows that the control and treatment that main microcomputer 17a carries out in basic washing dehydration mode.

In the washing dehydration mode, carry out cloth amount or cloth quality inspection survey in step 801 (cloth amount or cloth quality inspection are surveyed).

This testing result is used for setting the confluent of washings and the various conditions of mode of washing and dewatering type.At first, under the drying regime before the washings that drops into washing and dewatering bucket 2 is in feedwater,, make stirring wheel 4 rotations, according to the dried cloth cloth of load resistance size detection amount (S1 of Fig. 9) at this moment to brushless motor 51 power supplies.The detection of load resistance size is to detect its rotating speed to carry out when the rotating speed of brushless motor 51 is in stable state.When the cloth amount was many, load resistance was big, the rotating speed step-down, and therefore the rotating speed and the relation of load resistance (dried cloth cloth amount) by trying to achieve in advance just can detect dried cloth cloth amount according to rotating speed at this moment.In this example, this dried cloth cloth amount testing result is used to determine the washings quantity delivered.

Then, open water-suppling electromagnetic valve 21 feedwater, in washing and dewatering bucket 2 (outer barrel 5), reach predetermined water level.This predetermined water level is to make washings soak the low water level of usefulness.And then, make stirring wheel 4 rotations to brushless motor 51 power supplies, soak cloth amount (S2 of Fig. 9) according to load resistance size detection the 1st at this moment.Feedwater is risen water level then, once more to brushless motor 41 power supplies, makes stirring wheel 4 rotations, soaks cloth amount (S3 of Fig. 9) according to load resistance size detection the 2nd at this moment.At this moment the water level detecting signal that monitors level sensor 16 outputs carries out water level detecting.

The difference of soaking cloth amount testing result according to the 1st testing result and the 2nd of soaking the cloth amount detects cloth matter, is used to determine to wash and the condition of dewatering type.In this cloth amount and cloth quality inspection survey, in order to make stirring wheel 4 rotations, will be to brushless motor 51 power supply, the minimum output voltage V1 that the VD of dc voltage generating circuit 29a at this moment is made as this dc voltage generating circuit 29a (is made as 155V, the t1 of Fig. 9～t2) in this example.At this moment the VD of exporting to inverter circuit 29b is in order to improve accuracy of detection, and is low a bit more favourable.

When carrying out these detections, Vidacare corp 6 is with the solenoid 47a energising of engaged clutch mechanism 47, piece 47e is inhaled in electromagnetic attraction, by like this, the elastic force that slide block 47c is overcome helical spring 47d upwards draws, and makes the engagement jog 45c3 separation of the engagement projections 47f of this slide block 47c from motor rotor 45, inhales piece 47e and is adsorbed by electromagnetic core 47b, 47e1 engages with clamping slot 47b1 by the chucking raised line, tightens to stop outside rotary axis 35 (washing and dewatering bucket 2) rotation.Under this state, to the stator winding 52b power supply of brushless motor 51, make rotor 54 rotations, after slowing down by planetary gear 36i, inboard input axial region 36g passes to inboard output axial region 36c, make the stirring wheel rotation.

(t1～t2), shown in Fig. 9 (M), the output voltage of dc voltage generating circuit 29a maintains assigned voltage V1, also can maintain more than the minimum voltage V1 till next washing procedure in detecting running.

Step 802 is according to the dried cloth cloth amount decision water level that detects, and feeds water and reach the water level of regulation.Step 803 is set mode of washing according to cloth matter and degree of fouling, and the execution washing procedure (t2 of Fig. 9～t3).Mode of washing be with the washing intensity (be the stirring intensity of stirring wheel 4 and washing and dewatering bucket 2, mean the size of washing current) and washing time constituted various mode of washing, have the control program of described multiple mode of washing in advance, automatically carry out according to aforementioned cloth quality inspection survey result and by the degree of fouling of one group of input switch, 14 inputs, or carry out according to wherein a kind of mode of washing of Instruction Selection of one group of input switch, 14 inputs.This just imports washing current size.

In this example, be divided into by force as this washing intensity and wash (washing big part clothing) A, standard is washed B, in wash (washing small amount) C and a little less than wash D, also further have in addition according to degree of fouling this grade be further divided into dirty many and washing intensity that the standard is used (A1～D1) and the washing intensity of dirty few usefulness (two classes washing intensity (washing current) grade of A2～D2) etc., wash intensity (washing current) grade E a little less than weak more, be suitable for washing dry mark dress material and very thin dress material and make its indeformable washing intensity that makes the rotating of washing and dewatering bucket (washing current) grade F that loses shape, and be suitable for washing the such large piece article of bed clothes make washing intensity (washing current) the grade G of washing and dewatering bucket 2 folk prescriptions to slow rotation.Select the condenser voltage V2 of Fig. 9 according to the strong and weak grade of washing.When current are strong V2 than current a little less than the time height.In addition, shown in dotted line, also can increase to V10 earlier, and then be decreased to V11.If like this, can weaken flow intensity, can also improve the torque when beginning to rotate.

In the washing strength grade running that makes stirring wheel 4 rotatings, make the solenoid 47a energising of engaged clutch mechanism 47,47c upwards draws with slide block, the engagement of this slide block 47c and rotor 45 is unclamped, inhaling piece 47e is adsorbed by electromagnetic core 47b, to tighten prominent bar 47e1 engages with clamping slot 47b1, outside power shaft 35d is stopped the rotation, washing and dewatering bucket 2 remains static, again stator winding 52b is powered, make rotor 54 rotatings, by inboard input axial region 36g, planetary gear 36i and inboard output shaft 36c this rotation is passed to stirring wheel 4 again.Between stirring wheel 4 forward and reverse, temporarily stop to give the power supply of motor 51, but the output voltage of dc voltage generating circuit 29a does not drop to zero from inverter.Maintain more than the V1 of Fig. 9.In the present embodiment, t2～t3 maintains the set point according to the detection operation result of t1～t2.By like this, easily guarantee starting torque.

In the washing strength grade that makes 2 rotatings of washing and dewatering bucket, make the solenoid 47a outage of engaged clutch mechanism 47, slide block 47c depresses under helical spring 47d effect, the engagement projections 47f of this slide block 47c is embedded the engagement jog 54d of rotor 54 and intermesh, be connected with these rotor 54 formation, by giving stator winding 52b power supply, make rotor 54 rotatings, by outside power shaft 35d, gear casing 35e, outside output axial region 35a, this rotation is passed to washing and dewatering bucket 2 again.

At this moment, because planetary gears loses deceleration, so stirring wheel 4 rotates synchronously with the washing and dewatering bucket.In this case, make washing strength grade when running of capacitor electrode pressure ratio stirring wheel 4 rotatings want high, just can raise the efficiency.Have the effect that can improve the voltage of supplying with brushless motor 51, even and the rotating speed of brushless motor 51 improve also can supplying electric current effect.Between 2 forward and reverse of washing and dewatering bucket, temporarily stop the power supply to brushless motor 51, but the output voltage of dc voltage generating circuit 29a does not drop to zero from three-phase inverter circuitry 29b.Maintain more than the V1 of Fig. 9.In the present embodiment, t2～t3 maintains the set point according to the detection operation result of t1～t2.By like this, easily guarantee starting torque.

Make washing and dewatering bucket 2 carry out folk prescription in the washing strength grade of continuous running, engaged clutch mechanism 47 is under the state of being connected with a joggle, giving stator winding 52b power supply, making brushless motor 51 folk prescriptions to continuous rotation.The output voltage of the dc voltage generating circuit 29a of this state is not if the washing water yield has big difference, height during then than stirring wheel 4 rotatings.Height when also turning round in addition, than the washing strength grade that makes 2 rotatings of washing and dewatering bucket.

Washing intensity (washing current) will change because of the output torque and rotation time limit (the ON/OFF time ratio of power supply) of brushless motor 51.By the VD of dc voltage generating circuit 29a just control and the PWM of three-phase inverter 29b control in pressure limiting (peak value) control of sine voltage, can realize that the output torque power (size) of brushless motor 51 changes.In addition, the rotation time limit can be controlled by predefined control program.

For example in dirty many washing by force among the A1, the VD of setting dc voltage generating circuit 29a is the certain value of 210V, and making the positive and negative rotation time limit of utilizing three-phase inverter circuitry 29b to give brushless motor 51 power supplies (sinusoidal wave PWM) and stopping is 1.4 seconds (positive veer power supply)/0.9 second (stopping)/1.4 second (reverse directions power supply)/0.9 second (stopping) ... carry out repeatedly.Wash among the B1 in dirty many standards equally, the VD of setting dc voltage generating circuit 29a is the certain value of 230V, make utilize three-phase inverter circuitry 29b to give the power supply of brushless motor 51 and stop with 1.1 seconds (power supply)/0.9 second (stopping) carrying out repeatedly.Wash among the C1 in many dirty in addition, the VD of setting dc voltage generating circuit 29a is the certain value of 190V, make utilize three-phase inverter circuitry 29b to give the power supply of brushless motor 51 and stop with 0.8 second (power supply)/1.0 second (stopping) carrying out repeatedly.Wash among the D1 a little less than many dirty, the VD of setting dc voltage generating circuit 29a is the certain value of 190V, make utilize three-phase inverter circuitry 29b to give the power supply of brushless motor 51 and stop with 0.5 second (power supply)/0.7 second (stopping) carrying out repeatedly.

And with last different, in dirty few washing by force among the A2, the VD of setting dc voltage generating circuit 29a is 210V, utilize three-phase inverter circuitry 29b to give brushless motor 51 power supplies 0.3 second,, then the VD of dc voltage generating circuit 29a is reduced to 185V with big output torque starting, carry out such power supply in 1.1 seconds, continue rotation with little output torque, stopped for 1.0 seconds then, above-mentioned such rotating direction that is controlled at is carried out repeatedly.

In addition, wash among the B2 in dirty few standard, the VD of setting dc voltage generating circuit 29a is 210V, utilize three-phase inverter circuitry 29b to give brushless motor 51 power supplies 0.3 second, with big output torque starting, then to the additional pressure limiting PWM control of the sinusoidal wave PWM control of three-phase inverter circuitry 29b, by like this, making the sine voltage peak value of supplying with brushless motor 51 is 140V, carry out such power supply in 1.5 seconds, continue rotation with little output torque, stop 1.0 seconds kinds then, above-mentioned such rotating direction that is controlled at is carried out repeatedly.

In addition, wash among the C2 in few dirty, the VD of setting dc voltage generating circuit 29a is 210V, utilize three-phase inverter circuitry 29b to give brushless motor 51 power supplies 0.3 second, with big output torque starting, then to the additional pressure limiting PWM control of the sinusoidal wave PWM control of three-phase inverter circuitry 29b, by like this, making the sine voltage peak value of supplying with brushless motor 51 is 115V, carry out such power supply in 1.5 seconds, continue rotation with little output torque, stopped for 1.0 seconds then, above-mentioned such rotating direction that is controlled at is carried out repeatedly.

Wash among the D2 a little less than few dirty, the VD of setting dc voltage generating circuit 29a is 210V, utilize three-phase inverter circuitry 29b to give brushless motor 51 power supplies 0.3 second, with big output torque starting, then to the additional pressure limiting PWM control of the sinusoidal wave PWM control of three-phase inverter circuitry 29b, by like this, making the sine voltage peak value of supplying with brushless motor 51 is 90V, carry out such power supply in 1.5 seconds, continue rotation with little output torque, stopped for 1.0 seconds then, above-mentioned such rotating direction that is controlled at is carried out repeatedly.

If control by in the process of giving brushless motor 51 power supplies, reducing voltage like this, then can obtain following effect, promptly make stirring wheel rotation starting reliably with big torque, reduce to act on the mixing power of washings then, to alleviate the clothing damage.

In addition, wash among the E little, the VD of setting dc voltage generating circuit 29a is the certain value of 190V, make utilize three-phase inverter circuitry 29b to give the power supply of brushless motor 51 and stop with 0.5 second (power supply)/1.0 second (stopping) carrying out repeatedly.

In addition, in making the washing strength grade F of washing and dewatering bucket 2 rotatings, the VD of for example setting dc voltage generating circuit 29a is 155V, to the additional pressure limiting PWM control of the sinusoidal wave PWM control of three-phase inverter circuitry 29b, by like this, making the sine voltage peak value of supplying with brushless motor 51 is 80V, carry out such power supply in 6 seconds, continue slowly rotation with little output torque, then, stop 3.0 seconds and the F1 of the bucket rotation washing of rotating repeatedly, the F2 of the bucket rotation washing that stopped 3 seconds in 4 seconds of power, and the F3 that washs of the bucket rotation that stopped 2 seconds in 3 seconds of powering.

In addition, make washing and dewatering bucket 2 folk prescriptions in the washing strength grade G that continuous rotation is carried out, have following bucket rotation mode of washing, the VD of for example setting dc voltage generating circuit 29a is 155V, to the additional pressure limiting PWM control of the sinusoidal wave PWM control of three-phase inverter circuitry 29b, by like this, making the sine voltage peak value of supplying with brushless motor 51 is 35V, carry out such power supply in 6 seconds, continue slowly rotation with little output torque, stopped for 6 seconds then, above-mentionedly such be controlled at folk prescription to carrying out repeatedly.

Dirty program and aforesaid washing intensity and washing time are made up, each degree of fouling is respectively set 7 grades of mode of washing, select wherein a kind of mode to carry out.When utilizing the automatic selection instruction of input switch group 14 input, set according to the input instruction of input switch group 14 or select automatically with cloth quality inspection survey result according to the degree of fouling (dirty many, standard, few) that dirty detection sets.When utilizing the manual selection instruction of input switch group 14 inputs, then manually select according to its input instruction.

The 1st mode of washing group M1 is the mode of washing group of dirty washings how, for example have 7 grades, have wash by force 15 minutes mode of washing M11 of A1 washing, by force wash A1 washing 12 minutes mode of washing M12, standard wash B1 washing 12 minutes mode of washing M13, standard wash 10 minutes mode of washing M14 of B1 washing, in wash 8 minutes mode of washing M15 of C1 washing, a little less than wash 6 minutes mode of washing M16 of D1 washing and 6 minutes mode of washing M17 of little E of washing washing.

The 2nd mode of washing group M2 is the mode of washing group of the dirty washings of standard, for example have 7 grades, have wash by force 10 minutes mode of washing M21 of A1 washing, by force wash A1 washing 6 minutes mode of washing M22, standard wash B1 washing 6 minutes mode of washing M23, standard wash 5 minutes mode of washing M24 of B1 washing, in wash 5 minutes mode of washing M25 of C1 washing, a little less than wash 4 minutes mode of washing M26 of D1 washing and 3 minutes mode of washing M27 of little E of washing washing.

The 3rd mode of washing group M3 is the mode of washing group that the multiple washing intensity of combination constitutes dirty few washings of each mode of washing, for example have 7 grades, wherein mode of washing M31 is to wash A21 washing 5 minutes by force, then with bucket rotation washing F2 washing 1 minute and 30 seconds, wash B2 washing 4 minutes with standard again, at last with bucket rotation washing F2 washing 1 minute and 30 seconds; Mode of washing M32 is to wash A2 washing 4 minutes by force, with bucket rotation washing F2 washing 1 minute and 30 seconds, to wash B2 washing 3 minutes with standard more then, at last with bucket rotation washing F2 washing 1 minute and 30 seconds; Mode of washing M33 washes B2 washing 4 minutes with standard, with bucket rotation washing F2 washing 1 minute and 30 seconds, washes B2 washing 3 minutes with standard more then, at last with bucket rotation washing F2 washing 1 minute and 30 seconds; Mode of washing M34 be with in washed C2 washing 4 minutes, with bucket rotation washing F2 washing 1 minute and 30 seconds, wash B2 washing 3 minutes with standard more then, at last with bucket rotation washing F2 washing 1 minute and 30 seconds; Mode of washing M35 be with in washed C2 washing 4 minutes, with bucket rotation washing F1 washing 1 minute and 30 seconds, wash B2 washing 2 minutes with standard more then, at last with bucket rotation washing F1 washing 1 minute and 30 seconds; Mode of washing M3b is with the weak D2 of washing washing 4 minutes, then with bucket rotation washing F1 washing 1 minute 3, at last with bucket rotation washing F1 washing 1 minute and 30 seconds; Mode of washing M37 is with the weak D2 of washing washing 2 minutes, with bucket rotation washing F1 washing 1 minute and 30 seconds, washs 1 minute with the weak D2 that washes then, at last with bucket rotation washing F1 washing 1 minute and 30 seconds again.

These mode of washing are to use the such cold water of running water to carry out the control criterion of washing procedure, are using the such warm water of bathing pool surplus water to carry out in the washing procedure, can use more weak washing intensity and short washing time instead.

Such washing procedure is that the mode of washing that main microcomputer 17a surveys result or 14 settings of input switch group according to the cloth quality inspection is selected to determine, carries out by control dc voltage generating circuit 29a, three-phase inverter circuitry 29 and engaged clutch mechanism 47 according to the control program of this mode again.One of voltage of dc voltage generating circuit 29a supply inverter circuit 29b is for example shown in Fig. 9 (M) in the washing procedure.

Carry out the rinsing process (t3 of Fig. 9～t13) in the step 804 of Fig. 8.

This rinsing process is preferably carried out water filling rinsing running and water storage rinsing running combination.In addition, in order to improve rinse efficiency, weak dehydration (rinsing dehydration) the running best and short time is made up during draining.Have, one side is slowly rotated washing and dewatering bucket 2 in rinsing again, and the one side water filling is emitted to promote dirty washings, also is effectively if adopt such water filling rinsing running simultaneously.

This rinsing dehydration running is controlled according to cloth matter and degree of fouling, to change dehydration power.For example, to the washings of dirty many and standard, make washings hold concurrently the rotating speed of dehydration barrel 2, and the rotating speed climb procedure and the duration of runs (from the total ascent time that starting is counted) can change according to cloth matter with the 900rpm running of dewatering.Specifically, have 6 kinds of rinsing dewatering types, promptly rotating ratio more slowly rises and the 1st rinsing dewatering type that turned round 4 minutes, rotating ratio more sharply rises and the 2nd rinsing dewatering type that turned round 2 minutes and 40 seconds, (200～330rpm) rapider risings and the 3rd rinsing dewatering type that turned round 2 minutes and 30 seconds in the middling speed district, the 4th rinsing dewatering type that turned round 2 minutes and 20 seconds in the rapider rising in middling speed district, the 5th rinsing dewatering type that more slowly rises in low regime (0-130rpm) and middling speed district and turned round 3 minutes and 10 seconds, and the middling speed district slowly and more sharply rise in other zone and the 6th rinsing dewatering type that turned round 2 minutes and 30 seconds.

The rinsing dewatering type of dirty few washings is that the rotating speed with aforementioned washing and dewatering bucket 2 reduces (about 800rpm) a little and constitutes.

Each mode of washing is an intercoordination in these rinsing dewatering types and the aforementioned washing procedure, and selection wherein a kind of mode is carried out.

The control of such rotating speed rising characteristic is the instruction according to main microcomputer 17a output, by VD and the three-phase inverter circuitry 29b of supplementary microcomputer 29h control dc voltage generating circuit 29a, the output torque that changes brushless motor 51 realizes.Supplementary microcomputer 29h control dc voltage generating circuit 29a, so that export higher certain voltage (more than the 250V, in this example, be made as 270V), make brushless motor 51 can export high torque (HT), again three-phase inverter circuitry 29b is carried out speed feedback control, make the rotating speed rising characteristic reach foregoing characteristic.Owing to drive washing and dewatering bucket 2, make it have the rotating speed identical with the rotating speed of brushless motor 51, therefore judge the rotating speed of brushless motor 51 according to the rotating position signal of position detecting circuit 29f output, this brushless motor 51 is carried out speed control, just can realize rotating speed control washing and dewatering bucket 2.

In dehydration running, it is more than the 200V that the voltage of supplying with inverter circuit 29b by dc voltage generating circuit 29a preferably begins at t4.Perhaps be preferably in when running dehydration, aforementioned capacitor voltage is maintained the value that is higher than voltage V0, utilize the control of aforementioned three-phase inverter circuitry 29b to control the rotating speed rising characteristic of brushless motor 51.If (the minimum capacitance device voltage under the output DC pressure condition of the t3 of Fig. 9～t13) is V1 at rinsing process to establish aforementioned dc voltage generating circuit 29a, maximum capacity device voltage in the aforementioned rinsing process is V2, and then aforesaid voltage V0 represents with V0=V1+ (V2-V1)/2 here.

In step 805, carry out the dehydration procedure behind the rinsing process, i.e. final dewatering operation (t13～t14).

This dehydration procedure is identical with aforesaid washing procedure and rinsing process, controls to change dehydration power according to cloth matter and degree of fouling.Dehydration after the rinsing produces gauffer to washings and has a significant impact.Therefore, the control of wishing to dewater is wrinkling to reduce as far as possible.Dehydration power is to decide according to the rotating speed of washing and dewatering bucket 2 and the duration of runs.In order to make the dehydration running can be wrinkling less, in this example, have according to cloth matter and can select the multiple dewatering type carried out.

In this example, the rotating speed that each dewatering type is set washing and dewatering bucket 2 is 900rpm, by changing the rising mode and constituting different dewatering types the duration of runs (from the total ascent time that starting is counted).

This dewatering type (dewatering type behind the rinsing process) has 7 kinds, and promptly (0～130rpm) more sharply rises after slowly rising and 9 minutes the 1st dewatering type that turns round, rises and 8 minutes the 2nd dewatering type that turns round, rise equally and the 3rd dewatering type that turned round 7 minutes, (0～130rpm) more sharply rises and 6 minutes the 4th dewatering type that turns round, rises and 5 minutes the 5th dewatering type that turns round, rise and the 6th dewatering type that turned round 4 minutes and the 7th dewatering type that rises equally and turned round 3 minutes equally equally in low regime equally in low regime.

Rotating speed control in this dehydration procedure is also identical with the rotating speed control in the aforementioned washing dehydration operation, control dc voltage generating circuit 29a, so that export higher certain voltage (more than the 250V, in this example, be made as 270V), make brushless motor 561 can export high torque (HT), and three-phase inverter circuitry 29b is carried out speed feedback control, make the rotating speed rising characteristic reach foregoing characteristic.

Main microcomputer 17a is in these steps, and control display element group 15 is carried out state with display setting state and operation, is taking place when unusual or washing when finishing, and the buzzer of ringing is circulated a notice of.

In order to utilize more small-sized brushless motor 51 to obtain aforementioned such various optimum speed characteristics, when strong rotary driving force of needs or high rotating speed, the VD (terminal voltage of capacitor C) of dc voltage generating circuit 29a is risen and keep certain high voltage, and when the more weak rotary driving force of needs or the slow-speed of revolution, make the VD of dc voltage generating circuit 29a maintain certain low voltage, under such state, utilize three-phase inverter circuitry 29b to carry out pressure limiting PWM control.

In dehydration running, preferably by dc voltage generating circuit 29a supply with inverter circuit 29b voltage, be that the voltage V6 of Figure 19 (M) is more than the 200V when the starting.Perhaps the dehydration in dehydration procedure when running, preferably aforementioned capacitor voltage is maintained the value higher, utilize the control of aforementioned inverter circuit to control the rotating speed rising characteristic of brushless motor than voltage V0.

If (the minimum capacitance device voltage under the output DC pressure condition of the t3 of Fig. 9～t14) is V1 at rinsing process or dehydration procedure to establish aforementioned dc voltage generating circuit, maximum capacity device voltage in the aforementioned rinsing process is V2, and then aforesaid voltage V0 represents with V==V1+ (V2-V1)/2 here.

Figure 9 shows that VD (terminal voltage of capacitor C) the control characteristic sketch that desirable dc voltage generating circuit 29a that such motion control is used has.In the drawings, t1 is washing machine mains switch turn-on time.From this time, dc voltage generating circuit 29a begins to supply with the direct voltage of regulation.Until till the t15 dump, dc voltage generating circuit 29a keeps the direct voltage of supplying with regulation.By like this, can be in various drive manners smooth starting.In addition, the output of dc voltage generating circuit 29a can be supplied with other operating means or drive unit, can also apparatus for controlling of supply.

(t1～t2), making at this moment condenser voltage is minimum voltage V1 (being set at 155V in this example) in the control reference voltage of dc voltage generating circuit 29a, and keeps certain when driving stirring wheel 4 rotation in order to detect cloth amount or cloth matter.Drive stirring wheel 4 with lower rotation speed n 1, carry out altogether 3 times (dried cloth cloth amount detection S1, the 1st soaks cloth amount detection S2, the 2nd and soaks the detection of cloth amount).

(among the t2～t3), condenser voltage is boosted to high voltage V2, and keep certain at washing procedure.In this washing procedure, the height the when rotation speed n 2 of stirring wheel 4 turns round than detection.In order to make it that multiple variation be arranged, make it change into V10 or V11 as required according to cloth matter and degree of fouling.In this example, be set at 185V～230.Use high voltage like this, just carry out the drive controlling of multiple stirring intensity easily.

In rinsing process, (t3～t4) make condenser voltage get back to minimum voltage V1 is at (the t4～t5), boost to ceiling voltage V3, and keep certain that drives 2 rotations of washing and dewatering bucket so that during the washings dehydration during draining.At this moment, drive washing and dewatering bucket 2 with high rotation speed n 3.For washing and dewatering bucket 2 being carried out level and smooth acceleration control, as required, its process intermediate voltage V12 segmentation is boosted.In this example, setting ceiling voltage V3 is 270V.Such high voltage is suitable for the big washing and dewatering bucket 2 of drive controlling inertia loading.

Then, when one side makes washing and dewatering bucket 2 rotation one sides carry out the water filling rinsing (t6～t7), condenser voltage is maintained peak V4, and keep necessarily, utilize three-phase inverter circuitry 29b to control and make washing and dewatering bucket 2 and stirring wheel 4 rotate (n4) slowly.

(t8～10t), make condenser voltage get back to minimum voltage V1 as required, boosts to high voltage V13 when carrying out rinsing making stirring wheel 4 rotate (n5, n6) slowly.

(among the t11～t12),, make voltage rise to peak V5 in the dehydration of following in order to make stirring wheel 4 and washing and dewatering bucket 2 high speed rotating (n7).

Between t12～t13, with foregoing control N time repeatedly.

Dehydration procedure behind rinsing process and final dewatering operation (among the t13～t14), in order to make stirring wheel 4 and washing and dewatering bucket 2 high speed rotating (n8), make boost in voltage to peak V6.

Then, finish back (t15) in the final dewatering operation, dc voltage generating circuit 29a stops output dc voltage.

In above-mentioned example, be to use brushless motor as drive motor, but also can make motor otherwise.In addition, three-phase inverter circuitry also can change other inverter circuit into.

As mentioned above, in this example, owing to give the motor power supply that inverter drives in the Vidacare corp through rectification and after boosting with civilian alternating voltage,, just can realize washing or dehydration procedure efficiently by enough miniature motors therefore by effectively utilizing the output characteristic of motor.

Thereby, can realize careful washing and dehydration procedure according to the amount of washings, matter, dirty form etc., the washing machine of realizing multiple washing and dehydration running can be provided.

Figure 10 is motor 51 (being brushless motor in the figure) the vector control key diagram of example when turning round with dehydration for washing machine.In the drawings, under the state of the equivalent electric circuit of having considered motor 51, the real axis of complex plane is represented that with the d axle imaginary axis is represented with the q axle.In addition, Vi represents to be supplied with by inverter circuit 29b the voltage vector of motor 51, and its phase place is represented with δ.Voltage Vi is the alternating voltage shown in Fig. 7 (a).The electric current of motor 51 is flow through in electric current I m (vector) expression.Electric current I m for example measures with resistance 205.E0 is the induced voltage of motor 51, as seen from the figure, voltage V1 be the voltage vector rIm of the motor resistance component r that produces of induced voltage E0, motor current Im and the voltage vector ω rLIm that motor reactance component produces vector and.

In order to produce the torque of motor 51 effectively, preferably electric current I m vector is positioned on the q axle.Thereby in dehydration running for the rotating speed of the dehydration barrel 2 that improves washing machine effectively, the phase place δ of control voltage Vi and voltage Vi is positioned on the q axle vector of motor current Im.Be to operate as example with dehydration to be illustrated above, but in other running, get final product in order to produce torque effectively to drive stirring wheel 4 and dehydration barrel 2 rotations, to control with same consideration method.Above-mentioned ω r is an angular velocity of rotation, and it is ω r and increasing that induced voltage E0 is proportional to motor speed.

Below to make the braking behind the washing tube high speed rotating be controlled to be the explanation that example is carried out decelerate in the dehydration running.Figure 11 shows that the operating condition polar plot when motor 51 produces decelerative force.Here for example consider the deceleration regime under the dehydration barrel 2 high speed rotating states.The dehydration barrel of putting under the washings state 2 has big quality, so the dehydration barrel of high speed rotating has very big kinetic energy.For this dehydration barrel is a significant slowdown, must consume above-mentioned kinetic energy rapidly, in the control method of Figure 11 explanation, be to consume with the electric motor overheating form.Washing machine just made water originally, and therefore if the heat of motor is distributed around motor such as washing machine body, above-mentioned heat just can absorb easily, the unusual condition of high temperature can not occur producing.Promptly in washing machine,, also can fully absorb this heat energy even change into heat energy such as the energy of the temporary transient appearance of dehydration barrel deceleration etc.

Described the voltage of supplying with inverter is carried out in the control mode as present embodiment, as the motor high speed rotating situation of dehydration running under or under the bigger situation of motor load, can think that the voltage that the terminal voltage of capacitor C is promptly supplied with inverter circuit 29b sets higherly.In this case, if the induced voltage E0 of motor 51 is returned mains side, induced voltage E0 is consumed, then the terminal voltage of the voltage of inverter circuit 29b or capacitor C raises, and must improve the withstand voltage of element that these circuit use.In addition, when the voltage that utilizes capacitor C produces the supply voltage of other device, must take measures so that these devices are not produced baneful influence.According to these situations, wish that reducing induced voltage E0 as far as possible returns mains side, rise to suppress voltage.Consider these situations, in this example, also consume with the form of heat as far as possible, reduce that to return mains side as generated energy be inverter.

In Figure 11, slow down in order to make motor 51, then as mentioned above, must consume electrical power based on induced voltage E0.For this reason, control makes the q axle component Vq of voltage Vi opposite for the voltage phase place near induced voltage E0 by voltage Vi and phase place δ that inverter circuit 29b supplies with motor 51.The voltage Vi here can calculate according to motor speed ω r (being N) and relative induced voltage E0, therefore determines the value of voltage Vi in advance according to these relations, supplies with this predetermined voltage Vi in decelerate.

As previously mentioned, above-mentioned voltage Vi is a voltage of supplying with motor 51 according to the PWM control of inverter.For example the deceleration in dehydration running then as shown in Figure 9, the voltage control of supplying with inverter by capacitor C the voltage (V6 of Fig. 9) when motor is quickened will be low magnitude of voltage (V1 of Fig. 9).For the PWM control of inverter, then determine phase place δ and voltage Vi to make the q axle component of voltage Vi be negative E0 (vector).May command inverter circuit in view of the above.Promptly produce the control impuls of Fig. 7 (B), control inverter, the voltage Vi (alternating voltage waveform shown in Fig. 7 a) that will have above-mentioned phase place δ supplies with motor.

But,, then may become big unusually by motor current Im if control voltage Vi is certain.Thereby preferably voltage Vi is not certain.For example measure motor current Im, in the time can not directly measuring, calculate Im, or the current value that will measure regards Im as, control Vi according to determined electric current.Be the Im of above-mentioned measurement when bigger, voltage Vi is reduced than predetermined value; Than predetermined value hour, voltage Vi is increased, control like this.

Figure 13 shows that the memory data state of the predetermined value of storage phase place δ.N is the rotating speed of motor 51, for example is to be spaced apart 100rpm, until the form of 1000rpm.The interval of above table is determined by control precision.If thick at interval, control precision is low, and the difference of the q axle component Vq of then above-mentioned induced voltage E0 and voltage Vi is just big, and the rising of terminal voltage of motor and deceleration control are difficult to effectively can produce these influences.It is desirable to make voltage Vq to equate (vector is in the other direction) with induced voltage E0, but in fact very difficult.Thereby, as long as more satisfactory be that controlling with respect to induced voltage E0 is in 75%～125% scope.In addition, strictness says that the rotational speed N of motor is perhaps different with ω r, but N regard as identical with ω r control also no problem.10 expressions are the value of the phase place δ of parameter with the rotational speed N of motor 51 from phase place δ 1 to phase place δ.If the rotational speed N of motor 51 determines that then induced voltage E0 determines, voltage Vi and position phase δ determine, therefore if in advance phase place is stored as data, then by reading this data, just can carry out deceleration control.Even use the phase place δ of storage in advance to come control inverter, then the component Vq of voltage Vi is the value near induced voltage E0 size.

Figure 12 shows that from the state of Figure 11 polar plot under the deceleration regime more.Diminish with the different induced voltage E0 that are of Figure 11.Because induced voltage E0 is directly proportional with motor speed, therefore if motor speed reduces, then induced voltage E0 diminishes certainly.If reduce motor current Im, then energy consumption reduces, and braking effect has not just had.Thereby definite voltage Vi is so that electric current I m flows through.

In Figure 11 and Figure 12, by phase place δ control, if make the voltage of the voltage of voltage Vq less than induced voltage E0, then braking force becomes big, can slow down rapidly.But, there is electrical power to return mains side from motor, promptly the voltage of the direct current supply terminal voltage of inverter side (capacitor C) rises.On the other hand,, then can suppress the rising of above-mentioned direct voltage, but braking force descends if make voltage Vq greater than induced voltage E0.Thereby control phase δ selects the best induced voltage E0 and the relation of voltage Vq size, just can select best braking force and the relation that produces voltage.

About the relation of induced voltage E0 and voltage Vq, 1. as mentioned above, make induced voltage E0 and voltage Vq equal and opposite in direction by control phase δ, can control brake power and the relation of direct voltage.In addition as other method, owing under the motor low speed state, needn't worry that above-mentioned direct voltage becomes high voltage, 2. the therefore braking force when strengthening low speed also can be controlled and make voltage Vq smaller slightly than induced voltage E0.For example, establishing maximum speed is 1000rpm, is below the 500rpm or the following control phase δ of about 1/3rd 300rpm makes induced voltage E0 be slightly larger than voltage Vq in half of maximum speed at least then.For example, the ratio of induced voltage E0/ voltage Vq is taken at more than 1 between 1.25, by strengthening braking force like this.Also can 1. with 2. combine, when high speed rotating, carry out above-mentioned control 1., when low speed rotation, carry out above-mentioned control 2. above-mentioned.

Figure 14 shows that the flow chart of braking control action.At step S142,, detect the rotor-position and the rotational speed N of motor 51 according to the output of transducer 55.Detect the electric current I m of motor 51 in addition at step S144.At step S146 decision voltage Vi, do not make this electric current I m too high.As mentioned above, during greater than setting, voltage Vi is reduced, during less than setting, voltage Vi is raise, like this at step 146 decision voltage Vi at electric current I m at Im.Next at step S148 decision phase place δ.For example calculate phase place δ, be the q axle component of voltage Vi and the phase place δ of induced voltage E0 equal and opposite in direction (vector is in the other direction).Making voltage Vq and induced voltage E0 equal and opposite in direction is a controlled condition, and other condition also can be considered as mentioned above.In order to simplify calculating, can read the value of having considered above-mentioned condition in advance and decide.At this moment for example can use rotational speed N as parameter.At step S150, according to voltage Vi and phase place δ inverter is supplied with in the pulse of Fig. 7 (b), control motor 51.

According to the foregoing description, not only control brake power but also control the voltage that produces by motor and be no more than dangerous numerical value.The result can reduce the withstand voltage of inverter and other circuit element, makes price reduce, and improves reliability.

Motor will generate heat, but washing machine possesses the environment that absorbs heat, can absorb heat.Therefore, can suppress to produce high direct voltage, improve reliability.In addition, for knowing the washing machine that will make water, can improve for withstand voltage reliability.

Figure 15 shows that the power unit detailed circuit of Fig. 2.If the mains switch 13 of operation guidance panel shown in Figure 1, then hold, remove the other end of the line filter 17e that disturbs usefulness, an input of dc voltage generating circuit 1512, another input of dc voltage generating circuit 1512, above-mentioned line filter to attaching plug 1502 through the NO of fuse 1504, resistance 1508, mains switch 13 end and C from attaching plug 1502, form the closed-loop path, the alternating voltage of civilian power supply is supplied with dc voltage generating circuit 1512.

The supply voltage (being 5V in the present embodiment) of the main microcomputer 17a of dc voltage generating circuit 1512 outputs.The supply voltage that utilization is supplied with by dc voltage generating circuit 1512, main microcomputer 17a starts working, and main microcomputer 17a makes the 1st relay 1520, makes 1522 actions of the 2nd relay then, is in on-state respectively.The 1st relay 1520 constitutes parallel circuits with respect to the NO end and the C end of mains switch 13.In addition, the 1st relay 1520 and the 2nd relay 1522 are electrically connected with respect to line filter 17e, are in the relation of prime and back level.The 2nd relay 1522 is in the back level of line filter 17e, therefore, because the 2nd relay 1522 is connected, each device is started working together, also can stop and disturb the front of going to line filter 17e.

By operating power switch 13, NO end is connected with the circuit of C end, but the operation one of mains switch 13 finishes, and then the C end is held into on-state with NC, provides high level signal to the input 1548 of main microcomputer 17a.Next if operating power switch 13 once more, then the NC end becomes open-circuit condition, and the input 1548 of main microcomputer 17a becomes low level.According to the state variation of such input 1548 input signals, be cut off as the washing machine power supply, at first disconnect the 2nd relay 1522, delayed then disconnection the 1st relay 1520, washing machine then shuts down.

In the present embodiment, by the action of mains switch 13, at first main microcomputer 17a starts working, then to inverter circuit 29b, dc voltage generating circuit 29a, other operating means and driver (actuator) supply power.Its reason is if inverter circuit or dc voltage generating circuit 29a, driver 21,23,47a, inverter driving circuit 29g and control begin action simultaneously with microcomputer, the danger of misoperation to be arranged then.In addition, drive the inverter circuit direct voltage drive of washing machine motor.This direct voltage is to being supplied with by this capacitor after capacitor (C that the is equivalent to present embodiment) charging again.The input impedance of this dc voltage generating circuit is lower when power connection, and supply voltage is temporarily reduced.Supply with the supply voltage instability of main microcomputer 17a like this, also may make main microcomputer 17a postpone work.Make the 2nd relay 1522 postpone to connect and just can prevent these situations.

Circuit 1532 and 1534 is internal power cords, links to each other with the input of the dc voltage generating circuit 29a of Fig. 2.Thereby power line 1532 and 1534 offers the rectification circuit DB of dc voltage generating circuit 29a with alternating voltage internally.By operating power switch 13, internal power cord 1532 links to each other with attaching plug 1502, and before the 2nd actuating of relay, internal power cord 1534 does not link to each other with attaching plug 1502.In case utilize microcomputer output 1544 to drive, the 2nd relay 1522 is connected, then internal power cord 1534 just begins to link to each other with attaching plug 1502, after the action of the 2nd relay 1522, just to dc voltage generating circuit 29a, inverter circuit 29b, supplementary microcomputer 29h, inverter driving circuit 29g, position detecting circuit 29f, dc voltage control circuit 29c, other the locking device supply powers such as (diagram are omitted) of water-suppling electromagnetic valve 21, drain solenoid valve 23, clutch solenoid valve 47a and washing machine cover.When power connection, inverter circuit 29b and inverter driving circuit 29g flow through charging current to capacitor of circuit etc.Therefore supply voltage might temporarily reduce and instability.To inverter and inverter driving circuit 29g supply power thereof and the control circuit instability is dangerous.Therefore, at first on the basis that makes main microcomputer operate as normal, again to inverter circuit 29b, inverter driving circuit 29g and other electromagnetically operated valve supply power.

On internal power cord 1532 and 1534, connect dc voltage generating circuit 29a, on this dc voltage generating circuit 29a, connect capacitor C.Therefore, the charging current of above-mentioned C is big, can think also that conversely resistance value temporarily reduces, and causes supply voltage temporarily to descend.In the present embodiment, the terminal voltage of capacitor C becomes with the washing machine running, even indeclinable simple PWM control, capacitor C also must be at the input side of inverter.Thereby, be preferably in and make main microcomputer just begin the C charging after starting working.In addition, special if water-suppling electromagnetic valve 21 misoperations of control running water are poured water to washing machine, just can not carry out the detection of cloth amount and cloth matter shown in Figure 9.Therefore, be preferably in make main microcomputer 17a start working after to water-suppling electromagnetic valve 21 power supply.17b among Fig. 2 or Figure 15,17c and 17d are the three terminal bidirectional thyristor, utilize the signalizing activity of the output 1546 of main microcomputer 17a.

In addition, the direct voltage of dc voltage generating circuit 1512 (being 5V under situation of the present invention) supply side is provided with capacitor 1516, the 2nd relay 1522 actions after main microcomputer 17a starts working, both made because above-mentioned reason supply voltage temporarily descends, main microcomputer 17a can not touch work yet.

After making main microcomputer 17a action, to till the supply powers such as above-mentioned driver 21,23,47C and dc voltage generating circuit 29a, preferably postpone more than 50 milliseconds, if possible, postpone about 100 milliseconds or more than.

In addition, when washing machine being shut down, after disconnecting the 2nd relay 1522, disconnect the 1st relay 1520 by operating power switch 13.This situation wishes that also the voltage of capacitor C disconnects the 1st relay 1520 after reducing.The supply direct voltage of each driver and inverter driving circuit is 15V.The DC power supply circuit of supplying with this 15V is low to moderate 25V at input voltage and also moves.Thereby, if make that for example the voltage of capacitor C disconnects 1520 after being low to moderate about 25V, then further improve fail safe.

Dc voltage generating circuit 1512 is supplied with second output 1518 of relay power in addition except the 1st output of supplying with main microcomputer 17a supply voltage, from this end to the 1st relay 1520 and the 2nd relay 1522 supply powers.

Main microcomputer 17a is provided with power end 1524.On this power end, the 5V power output end 1624 of the supply voltage generation circuit 1604 from the 2nd supply voltage generation circuit 1602 shown in Figure 16 and 1604 is supplied with the supply voltage that main microcomputer 17a uses.

The circuit of Figure 16 moves as described as follows.The output of dc voltage generating circuit 29a is promptly supplied with the voltage of inverter 29b and is supplied with capacitor 1614 by diode 1612.The voltage of capacitor 1614 is as the power supply of the 2nd supply voltage generation circuit 1602 and 1604.In the present embodiment, supply voltage generation circuit 1602 and 1604 is not in parallel with respect to capacitor 1614, but series connection.Even though parallel connection also can, series connection does not allow to be subject to the influence of the interference that the switch motion of inverter circuit 29b produces.The 1st grade the supply voltage generation circuit 1602 of promptly connecting produces the 15V voltage of drivers action usefulness.The power supply (5V power supply) that 1604 outputs of supply voltage generation circuit are used digital circuit work such as microcomputer 17a and 29h.

In the above-described embodiments, be to have washings is washed the washing tube of usefulness, the washing machine that is arranged on the stirring wheel that aforementioned washing tube inside can rotate freely and makes the motor of aforementioned stirring wheel rotation, washing machine carries out washing procedure and rinsing process, has inverter circuit that ac voltage rectifier is powered with the dc voltage generating circuit that produces direct voltage, the direct voltage of accepting aforementioned dc voltage generating circuit output and to the aforementioned electric motivation and the control circuit of controlling aforementioned inverter circuit.Aforementioned control circuit has microcomputer, has in addition to connect and cut off the console switch that the washing machine power supply is used.

Utilize operation aforementioned operation switch, aforementioned microcomputer is started working, utilize the work of aforementioned microcomputer, power supply is offered aforementioned dc voltage generating circuit and aforementioned inverter circuit, because washing machine constitutes as mentioned above, therefore provide reliability.In aforementioned washing machine, supply with aforementioned microcomputer supply voltage after, postpone again power supply to be supplied with aforementioned dc voltage generating circuit and aforementioned inverter circuit more than 50 milliseconds, by so further having improved the washing machine reliability.

In the above-described embodiments, be to have the washing tube that washings is washed usefulness, be arranged on the stirring wheel that aforementioned washing tube inside can rotate freely, and the washing machine that makes the motor of aforementioned stirring wheel rotation, washing machine carries out washing procedure and rinsing process, have ac voltage rectifier to produce the dc voltage generating circuit of direct voltage, accept the direct voltage of aforementioned dc voltage generating circuit output and the inverter circuit that the aforementioned electric motivation is powered, the control circuit of control washing machine, and drive the inverter driving circuit that aforementioned inverter circuit is used, aforementioned control circuit has microcomputer and supplies with the power circuit of this microcomputer power supply, have in addition and connect and cut off the console switch that the washing machine power supply is used, also has described washing machine plug, connect and cut off the 1st relay of a power line of aforementioned plug, and the 2nd relay of connecting and cutting off aforementioned another power line of plug, the back level of the described the 1st and the 2nd relay links to each other with power circuit to aforementioned dc voltage generating circuit and the power supply of described inverter driving circuit, by operation aforementioned operation switch, at first connect the 1st relay, make the power circuit work of aforementioned microcomputer, utilize the action of aforementioned microcomputer, connect the 2nd relay, make the power circuit work of supplying with aforementioned dc voltage generating circuit and described inverter circuit power supply, owing to adopt above-mentioned such formation, therefore improved the washing machine reliability.In aforementioned washing machine, when cutting off the washing machine power supply, at first utilize the action of aforementioned microcomputer to cut off aforementioned the 2nd relay, and then cut off the 1st relay according to the operation of aforementioned operation switch, owing to adopt above-mentioned such formation, therefore further improved the washing machine reliability.

In Figure 16, utilizing the voltage of supplying with inverter circuit 29b is that the voltage that capacitor C exports makes supply voltage generation circuit 1602 and 1604 work.Therefore in the action, motor 51 is still under the state of rotation even civilian power supply is supplied with cut-out, microcomputer 17a and 29h be correct operation still, and testing circuit (comprising various transducers) such as inverter driving circuit 29g and position detecting circuit 29f still works in addition, can guarantee fail safe.

So-called civilian power supply is supplied with situation about cutting off, and for example has and is selecting child to pull situations such as plug.Supply with situation about cutting off thereby can not control if washing machine is washing or this power supply takes place when dewatering, just abnormally dangerous.As a kind of example of danger, for example can not control as if dump in the dehydration running, then the dehydration barrel in the high speed rotating just is not easy to stop, and such problem can occur.In the present embodiment, motor rotation and the induced voltage that produces returns mains side by inverter circuit 29b, utilize this point, with this voltage supply line voltage generation circuit 1602 and 1604, by just keeping control action like this to comprising control circuit at interior necessary circuit supply power.The induced voltage that produces owing to the motor rotation returns mains side by inverter circuit 29b, therefore can utilize the energy of this capacitor C savings, even civilian dump, washing machine also can be kept control, can improve fail safe.

In addition,, then reduce up to the rotating speed of motor 51, can also control the switching of dehydration bung, promptly can keep closed condition, can keep fail safe except keeping the washing machine state of a control if the switching of dehydration bung is controlled.

Figure 17 shows that corresponding action flow chart when civilian power supply supply stops.Step 801 no longer repeats to 805 explanations in Fig. 8.In rinsing running or dehydration running, dehydration barrel runs up.At this state, must carry out the washing machine power supply and supply with control when stopping.In step 1702, microcomputer 29h (auxiliary microcomputer) monitors whether the power supply supply of washing machine is cut off, when cutting off, and execution in step 1704.Detect the voltage of the capacitor C of Fig. 2, detect the rotating speed of motor 51 in step 1706.According to these testing results, brake in step 1710.When motor stops basically, detect this situation in step 1708, stop control operation.The braking control of step 1710 is as using Figure 11 and Figure 12 explanation.

According to present embodiment, as shown in Figure 2, control device is made of main control unit 17 and sub controlling unit 29.Sub controlling unit 29 has the control computer 29h that supplementary microcomputer is dc voltage generating circuit 29a and inverter circuit 29b.If microcomputer 29h keeps work, then can carry out the control of electric braking to motor 51.Thereby the supply voltage generation circuit 1602 and 1604 of Figure 16 at least will be with power supply voltage supplying microcomputer 29h and inverter driving circuit.

Figure 18 is the detailed circuit diagram of the dc voltage generating circuit 29a of Fig. 2.Capacitor C is made of 2 series capacitors 1802 and 1804, is provided with and capacitor 1802 and 1804 difference parallel resistor 1812 and 1814 again.By this capacitor 1802 and 1804 that is connected in series, can reduce the withstand voltage of each capacitor.In order to make the voltage that is added on each capacitor 1802 and 1804 even as far as possible, series resistance 1812 and 1814 are set again.

Voltage control resistance 29e constitutes like this, promptly the terminal voltage in the dividing point Q of resistance 1822 and 1824 Measurement of capacitor 1802 and 1804 is a charging voltage, if this voltage VQ is less than reference voltage, then dc voltage control circuit 29c increases the charging interval of reactance coil L (Fig. 2), and the energy when switch element S1 disconnects increases.If reduce the resistance value of dividing point Q, then the voltage VQ of dividing point Q descends, and the charging interval of reactance coil L is elongated, and capacitor 1802 and 1804 charging voltage rise.Thereby, if with the resistance value of microcomputer 29h control dividing point Q, then can control capacitor 1802 and 1804 charging voltage, can control the voltage of supplying with inverter circuit 29b.

At dividing point Q 5 resistance 1826 and 1 resistance 1828 totally 6 resistance that are connected in series, also be connected to resistance 1828 at each tie point.In the present embodiment, explanation be situation about controlling with 6, increasing same formation also can enough 8 control.If making microcomputer 29h output D0 all is high level (H) to D5, then the resistance value of dividing point Q is for the highest, and capacitor 1802 at this moment and 1804 charging voltage are minimum.If the voltage of establishing at this moment is benchmark low-voltage VQ0, output D5 is low level (L), and then voltage VD5 raises.In the present embodiment, setting benchmark low level VQ0 is the 140V to 170V that illustrates as Fig. 2.Specifically, be set at 155V.In addition, voltage VD5 is 80V.Thereby if to make output D5 be low level (L), then capacitor 1802 and 1804 charging voltage are that 155+80 is 235V.If to make output D4 is low level (L), then capacitor 1802 and 1804 voltage have increased voltage VD4.Voltage VD4 is half of voltage VD5, is 40V in the present embodiment.If making output D3 equally respectively is low level (L) to output D0, then capacitor 1802 and 1804 terminal voltage have increased the voltage of voltage VD3 as shown in figure 19 to voltage VD0.Thereby if all be low level from output D5 to output D0, then to become 155+80+40+20+10+5+2.5 be voltage 302.5V for capacitor 1802 and 1804 terminal voltage.As mentioned above, (present embodiment is 16 at ceiling voltage can correctly to control voltage with computer 29h

302.5V) and benchmark low-voltage VQ0 (present embodiment is 155V) between.

Figure 20 lays down the vertical view that the washing tube of washing machine and following motor thereof etc. are seen from above.At washing machine one side-lower the 2nd control device 29 is installed.This device is below motor.Figure 21 lays down the upward view that the washing machine base plate is seen from below conversely.The 2nd control device 29 is installed on the erecting bed 2202.The 2nd control device 29 has fin 2204, and fin 2204 is located at the below of the 2nd control device 29.The reason that fin 2204 is placed on the below is that washing machine makes water, is placed on washy place simultaneously.Thereby consider the 2nd control device 29 around speckle with water, water is fallen rapidly.If fin is arranged in the above, the water that then falls into fin probably is difficult to remove.

Figure 22 is for seeing the top view of control device 29 from above, Figure 23 is its end view.The opposition side of Figure 22 is provided with fin 2204 below being.Figure 22 and Figure 23 correctly represent its size relationship, for rectangle so that pack into easily.In addition in order to make the distribution can waterproof, 4 kinds of distributions are bundled into a branch of as 2302, come in and go out from installing 29 shells.

Figure 24 (a) is depicted as the side of shell on the 2nd control device 29, (b) is depicted as to remove the internal circuit substrate of going up shell.The substrate both sides are provided with the switch element S1 of inverter 29b and dc voltage generating circuit 29a respectively.Be arranged side by side the capacitor 1812 and 1814 that constitutes capacitor C with the fin of switch element S1.

In the present embodiment, aforementioned dc voltage generating circuit has to be stored the capacitor of supplying with contravarianter voltage and controls the dc voltage control circuit that described capacitor is charged, aforementioned dc voltage control circuit is accepted the branch pressure voltage of aforementioned capacitor terminal voltage, control is to the charging of aforementioned capacitor, make that aforementioned branch pressure voltage is a reference voltage, aforementioned control device is added in aforementioned branch pressure voltage on the aforementioned dc voltage control circuit by change, control the voltage of aforementioned capacitor, by changing the direct voltage of supplying with aforementioned inverter circuit, can realize the reliability height, the washing machine of excellent in efficiency.

In addition,, can control the voltage that is added on the dc voltage control circuit 29c, terminal voltage that in view of the above can control capacitor C by from secondary computer 29h output digital signal.Thereby control is simple, can obtain high reliability.

As mentioned above, according to the present invention, can provide the washing machine of reliability height, excellent in efficiency.

Claims (9)

1. washing machine, have washings is washed the washing tube of usefulness, the motor that is arranged on the stirring wheel that described washing tube inside can rotate freely and makes described stirring wheel rotation, washing machine comprises washing procedure and rinsing process at interior multiple drive manner

Have inverter circuit that ac voltage rectifier is powered with the dc voltage generating circuit that produces direct voltage, the direct voltage of accepting described dc voltage generating circuit output and to described motor and the control device of controlling described washing machine running and described dc voltage generating circuit, it is characterized in that

As described multiple drive manner, described control device has for one of the processing active force power in the same processing action or processing time length, sets the means of 2 grades of drive manners at least,

Described dc voltage generating circuit has the capacitor that keeps the supply contravarianter voltage and controls the dc voltage control circuit that described capacitor is charged,

Described dc voltage control circuit constitutes like this, and it accepts the branch pressure voltage of described capacitor terminal voltage, and control makes described branch pressure voltage reach reference voltage to the charging of described capacitor,

Described control device is according to described drive manner, is added in described branch pressure voltage on the described dc voltage control circuit by change, controls described condenser voltage, changes the direct voltage of supplying with described inverter circuit.

2. washing machine as claimed in claim 1 is characterized in that, according to voltage and the described drive manner of supplying with described inverter, controls the duty ratio of described inverter.

3. washing machine as claimed in claim 1, it is characterized in that, interior being equipped with to the described dc voltage generating circuit of described motor power supply and the 2nd control device of inverter circuit is arranged on described washing machine bottom, will according to described drive manner to the 1st control device that the 2nd control device sends instruction be configured in the washing and dewatering bucket above.

4. washing machine, it is characterized in that, a plurality of console switchs with one of the predefined multiple drive manner of selection that is arranged on washing machine top usefulness, be arranged on the washing tube of washing machine inside, be arranged on the stirring wheel of washing tube inside, be arranged on the motor below the described washing tube, and the control device of control washing machine, utilize described control device that described motor is controlled, utilizing described motor that described stirring wheel is rotated washs, and control like this, when 2nd console switch of operation in described a plurality of console switchs, the rotating speed of described stirring wheel, the rotating speed of the described stirring wheel during than the 1st console switch in the described a plurality of console switchs of operation is fast

As described multiple drive manner, in same processing action, have about handling at least 2 grades of drive manners of one of active force power or processing time length, the processing active force that described the 2nd console switch is set than described the 1st console switch is strong or the processing time is long,

Described control device have the running control circuit that produces the 1st and the 2nd control signal, with the rectification circuit of alternating current rectification, accept described rectification circuit output electric current and according to the dc voltage output circuit of described the 1st control signal output dc voltage, with the direct voltage of described dc voltage output circuit output as input and the inverter circuit described motor controlled according to described the 2nd control signal

The height when output voltage of described dc voltage output circuit is than described the 1st console switch of operation when making described the 2nd console switch of operation.

5. washing machine, it is characterized in that, have console switch, the washing tube of putting into washings, the stirring wheel that is arranged on described washing tube inboard of selecting washing current size, make the motor of described stirring wheel or the rotation of described washing tube and accept signal that described console switch sends as input and export the control device of the 1st control signal and the 2nd control signal

Described control device have with ac voltage rectifier and according to described the 1st control signal boost that the direct voltage supply circuit of direct voltage is supplied with in the back and with the direct voltage of this direct voltage supply circuit output as input and according to the inverter circuit of described the 2nd control signal to described motor power supply

When selecting big current, want high when the voltage ratio that described direct voltage supply circuit is supplied with is selected weep with described console switch.

6. washing machine, it is characterized in that, have input washings degree of fouling console switch, put into washings washing tube, be arranged on described washing tube inboard stirring wheel, make the motor of described stirring wheel or the rotation of described washing tube and accept signal that described console switch sends as input and export the control device of the 1st control signal and the 2nd control signal

Described control device have with ac voltage rectifier and according to described the 1st control signal boost that the direct voltage supply circuit of direct voltage is supplied with in the back and with the direct voltage of this direct voltage supply circuit output as input and according to the inverter circuit of described the 2nd control signal to described motor power supply

In washing procedure, under the situation of dirty serious washings, the situation of the dirty slight washings of the DirectCurrent Voltage Ratio that described direct voltage supply circuit is supplied with wants high.

7. washing machine, it is characterized in that, have washing tube, the stirring wheel that is arranged on described washing tube inboard of putting into washings, make the motor of described stirring wheel or the rotation of described washing tube and accept signal that described console switch sends as input and export the control device of the 1st control signal and the 2nd control signal

Described control device have with ac voltage rectifier and according to aforementioned the 1st control signal boost that the direct voltage supply circuit of direct voltage is supplied with in the back and with the direct voltage of this direct voltage supply circuit output as input and according to the inverter circuit of described the 2nd control signal to described motor power supply

In washing procedure, according to described the 2nd control signal, control described motor and make its forward and reverse repeatedly,

In washing procedure, under the situation of slight dirty washings, the direct voltage that described direct voltage supply circuit was supplied with when described forward and reverse began is higher, reduces the direct voltage of supplying with then.

8. washing machine, has washing tube, be arranged on the stirring wheel of described washing tube inboard, make the motor of described stirring wheel or described washing tube rotation, and the control device that described motor is controlled, described washing tube has the structure of washings and water being put into its inboard, detect the running of described washings state, according to described testing result, described control device is controlled the rotation of described motor, make described stirring wheel rotation, wash running, described then control device is controlled the rotation of described motor, makes described washing tube rotation, the running of dewatering, it is characterized in that

Described control device have the running control circuit of output the 1st control signal and the 2nd control signal, the alternating voltage that will supply with washing machine carry out rectification rectification circuit, accept the output of described rectification circuit and produce the dc voltage generating circuit of direct voltage and accept the direct voltage of described dc voltage generating circuit and produce to make the voltage that described motor rotates or the inverter circuit of electric current according to described the 2nd control signal according to described the 1st control signal

Service voltage height when the service voltage of described dc voltage generating circuit when described washing is turned round turns round than the described washings state of detection, and the service voltage when described dehydration is turned round is higher.

9. washing machine as claimed in claim 8, it is characterized in that, between the running that detects described washings state and described washing running and between described washing running and the described dehydration running, the service voltage the when service voltage of described dc voltage generating circuit turns round than described washing and described dehydration is turned round is low.

Images