CN1211520C - Washing machine - Google Patents

Abstract

The present invention relates to a washer, in order to prevent the control device from generating erroneous operation due to the noise of the DC voltage generating circuit for generating DC voltage of inverting circuit or inverter, the DC voltage generating circuit for generating DC voltage of inverting circuit or inverter is arranged below the laundry machine, and the computer for controlling the laundry machine, which is different from the above circuit, is arranged above the laundry machine.

Description

Washing machine

The present invention relates to washing machine, particularly relate to the washing machine that has reduced from the influence of noise of inverter circuit.

Usually, the structure of washing machine is, possess the washtub that rotatably is arranged in the outer bucket hold concurrently dehydration barrel, at this washtub stirring wing wheel that dehydration bucket bottom rotatably is provided with of holding concurrently, and drive hold concurrently dehydration barrel and stir the Vidacare corp of wing wheel rotation of washtub, rotate selectively by this Vidacare corp and to drive hold concurrently dehydration barrel and stir wing wheel of described washtub, the clothing of holding concurrently and to wash in the dehydration barrel with the agitator treating bucket, carry out washing procedure and rinsing process, the washtub dehydration barrel of holding concurrently is rotated at a high speed, make the structure of the clothing centrifugal dehydration of washing.

The common usability induction motor of Vidacare corp is as power source, but the someone has proposed to utilize the structure of inverter circuit to the motor power supply recently.Proposed to use brushless motor so that can realize the washing machine of various washings, rinsing and dehydrating operation again as motor.The washing machine of inverter control is disclosed in for example Japanese patent laid-open 9-121584 communique.Described use in washing machine microcomputerized control is general situation.

It is senior that the control of washing machine progressively becomes, and it is complicated that the content of control also becomes.In washing machine, be provided with the digital circuit of micro computer etc., also be provided with inverter etc. simultaneously.The noise that this inverter produces is very big.Must prevent that these noises from causing malfunction.

An object of the present invention is to provide the high washing machine of safe coefficient.Other purposes will illustrate in the following embodiments.

The present invention is installed on the below of washtub to the computer of control inverter circuit and inverter, and on the other hand, the computer of control washing machine is disposed at the top of washtub in order to achieve the above object.Reduce The noise with this.

Fig. 1 is the vertical profile side view of general situation of basic structure of the all-electric washing machine of expression one embodiment of the invention.

Fig. 2 is the vertical profile side view of concrete structure of the all-electric washing machine of expression one embodiment of the invention.

Fig. 3 is the vertical profile side view of internal structure of Vidacare corp of the all-electric washing machine of expression one embodiment of the invention.

Fig. 4 is the side view of amplification of the part of Vidacare corp shown in Figure 3, and expression makes the washtub dehydration barrel of holding concurrently static, drives the state that stirs the wing wheel rotation.

Fig. 5 is the side view of amplification of the part of Vidacare corp shown in Figure 3, and expression drives hold concurrently dehydration barrel and stir the state of wing wheel rotation of washtub.

Fig. 6 is the block diagram of circuit of the all-electric washing machine of expression one embodiment of the invention.

Fig. 7 A, Fig. 7 B are the oscillograms of utilizing the constant control of V/F of sinusoidal wave PWM control.

Fig. 8 is the flow chart that the basic controlling of the washing carried out of the main micro computer of automatic washing machine, rinsing, dehydration procedure is handled.

Fig. 9 is the basic control characteristic figure of VD (terminal voltage of capacitor) of dc voltage generating circuit that is suitable for moving control of the automatic washing machine of one embodiment of the invention.

Figure 10 is one embodiment of the invention, is the key diagram of the motor vector controlled of example when moving with laundry machine dehydration.

Figure 11 is the polar plot under the running status of motor 51 generation decelerative forces.

Figure 12 is the polar plot that the rotary speed at motor 51 becomes lower the state that runs slowly.

Figure 13 is the figure that expression records the state of phase place δ.

Figure 14 is the flow chart of action of the brake control of expression one embodiment of the invention.

Figure 15 is the detail drawing of the power circuit of one embodiment of the invention.

Figure 16 is the power circuit detail drawing of the control device of one embodiment of the invention.

Figure 17 is the flow chart of the respective action of the civilian power supply of expression when having a power failure.

Figure 18 is the detailed circuit diagram of dc voltage generating circuit 29a.

Figure 19 is the action specification figure of dc voltage generating circuit 29a.

Figure 20 is the allocation plan of main control unit 17 and sub controlling unit 29.

Figure 21 removes the washtub of washing machine and the motor of below thereof etc., the figure that looks down from the top.

Figure 22 removes the figure that the washing machine base plate looks up from the below.

Figure 23 is the vertical view of the 2nd control device 29.

Figure 24 is the side view of the 2nd control device 29.

Figure 25 A, Figure 25 B are the figure of the inner case of expression the 2nd control device 29.

Below embodiments of the invention are illustrated.Fig. 1 is the vertical profile side view of the washing machine of expression one embodiment of the invention.In this embodiment, show with the basic structure of automatic washing machine a example as washing machine.

The 1st, washing machine shell is the washing machine shell that surrounds internal mechanism.The 2nd, be arranged at the washtub in the washing machine shell, specifically, be the washtub dehydration barrel of holding concurrently.The edge portion on washtub (or washtub hold concurrently dehydration barrel) top possesses fluid balancer (balancer) 3.The bottom inside of washtub (or washtub hold concurrently dehydration barrel) 2 possesses the stirring wing wheel 4 that can rotate freely.The 5th, outer bucket, portion possesses the washtub that can rotate freely (or washtub hold concurrently dehydration barrel) 2 within it.Bucket 5 bottom outside is equipped with the Vidacare corp 6 of charged motivation by means of the installation base plate 7 of steel plate manufacturing outside, and outer bucket is dangled by shockproof supporting arrangement 8 on four jiaos of the upper ends that are supported on shell 1.Internal structure situation about Vidacare corp 6 will be narrated below.

The top that loam cake 9 that clothing drops into opening 9a is arranged at washtub (or washtub hold concurrently dehydration barrel) 2 is set.The upper opening of described loam cake 9 covering shells 1, and embed the edge of this opening, front panel 10 and rear board 11 1 are reinstated and screw (diagram is omitted) is installed is installed on shell 1.

The place ahead at loam cake 9, the front panel box 12 that is formed at front panel 10 belows accommodates power switch 13, the input switch group 14 as console switch, display element group 15, the level sensor 16 with the interior corresponding water level signal of water level of outer bucket 5 takes place, and as the 1st control device 17 of main control unit.Input switch group 14 (it illustrates omission) possess the dirty degree (very dirty, general dirt, slightly dirty) of the clothing that setting will wash switch, set dry mark clothes washing switch, set the switch of bed clothes washing and firing switch.The selector switch of the flow intensity of selecting washing or rinsing is set in addition, the switch of expression cloth matter is set again

At the rear of loam cake 9, rear board box 18 is set, make it be formed at rear board 11 belows.In this rear board box 18, accommodate influent side is connected in hose 19, water outlet side is connected in the water supply electromagnetic valve 21 of water filling port 20.Water filling port 20 forms the state that can discharge water to the opening of washtub (or washtub hold concurrently dehydration barrel) 2.Plate box 18 also is provided with by water pump and provides the water pump of the usefulness of water for bathing etc. to washtub (or washtub hold concurrently dehydration barrel) 2 in the back.Water from described water supply electromagnetic valve 21 is to import water filling port 20 by the filter of eliminating metal ion again.The clothes inlet 9a that is formed at loam cake 9 forms by lid 22 and opens and closes the structure that is covered freely.

The water discharge outlet 5a that is formed at the bottom of outer bucket 5 is connected in scupper hose 24 by drain solenoid valve 23.Again, the below of bucket 5 is provided with air water valve (air trap) 5b outside, and this air water valve 5b is connected in described level sensor 16 by tracheae (air tube) 25.Level sensor 16 utilizes said structure that water level is detected, and the signal of expression water level is imported the 1st control device 17.

The base 27 that synthetic resin is made is housed below washing machine shell 1, and this base is equipped with 4 pin 26 for four jiaos.Again, above-mentioned Vidacare corp 6 is covered with waterproof by lid 28.It is motor that this Vidacare corp 6 possesses drive motor.The brushless motor of control performance excellence is set in the present embodiment.The 2nd control device 29 as sub controlling unit by built-in inverter circuit is powered to this motor.Following the 2nd control device 29 forms the structure of being powered to motor by built-in inverter circuit according to from the indication of described the 1st control device 17.The 1st control device 17 be disposed at washtub (or washtub hold concurrently dehydration barrel) 2 and motor drive 6 above.

On the other hand, the 2nd control device 29 be arranged at washtub (or washtub hold concurrently dehydration barrel) 2 below.Form such structure, the safety in the time of can guaranteeing the equipment waterproof and use high voltage.In a word, at the micro computer that the setting of the 1st control device 17 is controlled, be arranged at washtub (or washtub hold concurrently dehydration barrel) 2 tops of easy waterproof.Again, the 2nd control device 29 is owing to use and supply with high-tension dc voltage generating circuit, so be arranged at washtub away from user's position (or washtub hold concurrently dehydration barrel) 2 belows.In the present embodiment, be arranged on the base 27 that synthetic resin makes, improved security performance more.

Fig. 2 is the vertical profile side view of the concrete structure of this all-electric washing machine, and its part is launched expression.This automatic washing machine basically with automatic washing machine same structure shown in Figure 1, therefore, use identical Ref. No. with automatic washing machine structure member corresponding structure parts shown in Figure 1, omit repeat specification.Vidacare corp 6 built-in brushless motors 51 as power source.

Fig. 3 is a presentation graphs 1 and the vertical profile side view of the internal structure of Vidacare corp 6 shown in Figure 2.Fig. 4 and Fig. 5 are the side views of the amplification of a part shown in Figure 3.The rotating driveshaft that this Vidacare corp 6 is held concurrently dehydration barrel 2 and stirred wing wheel 4 with washtub be the axle center in vertical direction with the reduction gear engagement, clutch 47 and reversible rotary-type brushless motor 51 concentric tandems are disposed.

Reduction gear utilizes ball bearing 33a, 33b that 34 of the rotating driveshaft systems of inside and outside 2 weight structures are held in to cooperate with flange to utilize the reducing gear shell 32a, the 32b inboard that are divided into 2 parts that screw 31 is installed on mounting seat 7 is installed.The outside rotary axis that this rotating driveshaft system 34 possesses hollow the inboard rotating shaft system in this hollow of being disposed at that unifies.

Outside rotating shaft system is delivered to the washtub dehydration barrel 2 of holding concurrently immediately to the rotation of motor, drives the hold concurrently rotating shaft system of dehydration barrel 2 of this washtub.Outside rotating shaft system extends to the outside of shell 32a from the inboard of ball bearing 33a in the axial direction, connects outer bucket 5, combines and makes its rotation as the outside output axial region 35a of leading section and the washtub dehydration barrel 2 of holding concurrently.Under washtub was held concurrently the state of dehydration barrel 2 rotation, annular gear wheel 35f and planetary gear 36i, support (carrier) 36h, inboard output axial region 36c rotated simultaneously, stirred wing wheel 4 and the washtub dehydration barrel 2 of holding concurrently and rotated with identical speed.Downwards on axially extended cylindrical portion, form spline tooth (serration) 35b that combines with engaged clutch mechanism 47 in the outside of shell 32b.Form outside input axial region 35d and the gear-box 35e mechanical bond of flange 35c at the shell 32b of spline tooth 35b medial end.And fixing annular gear wheel 35f interior week at gear-box 35e.Between annular gear wheel 35f and central gear (sun gear) 36f a plurality of planetary gear 36i are set.Planetary gear 36i forms deceleration, transmits the reducing gear of rotation with annular gear wheel 35f and central gear 36f.This reducing gear is contained in the gear-box 35e.

The inboard rotating shaft system that is provided with in the inboard of this outside rotating shaft system makes to be delivered to after the rotational delay of motor to stir wing wheel 4, drive the rotating shaft system of this stirring wing wheel 4, utilize sealing gasket (seal) 37, metal bearing 38a, 38b and clamp locating snap ring (push nut) 39 to be provided with and to form water-tight and can prevent the state that comes off.The utilization of inboard rotating shaft system is installed screw 36a and is installed on from the front end of outside output axial region 35a inner outstandingly to the washtub dehydration barrel 2 of holding concurrently, and the outer end of stirring wing wheel 4 is installed.Inboard rotating shaft system possesses inboard output axial region 36c, inboard input axial region 36g and planetary gear 36i.Inboard output axial region 36c is communicated with gear-box 35e inside from the inboard from outside output axial region 35a, forms the structure that combines with above-mentioned planetary gear reducing mechanism, and end parts forms spline tooth 36b within it.Inboard input axial region 36g utilizes ball bearing 40a, 40b to be supported on outside input axial region 35d inboard.Import the outer end of axial region 36g in the inboard of stretching out with the single armed state, form the chimeric fixed part 36d that utilizes fixed screw 36e fixed motor rotor from the outer end of outside input axial region 35d.The part of inner end one side of the inboard input axial region 36g in stretching into gear-box 35e forms central gear 36f.In gear-box 35e, planetary gear 36i form its be supported on the chimeric support 36h of the spline tooth 36b of described inboard output axial region 36c on structure.Planetary gear 36i and described gear 35f and 36f engagement rotation, planetary gear 36i is delivered to described support 36h to revolving force.Planetary gear 36i rotates under the state that the rotary speed of gear 36f is slowed down, so the revolving force deceleration is transmitted.

Ball bearing 40a, 40b are installed under the state that outer shroud is pressed in the outside input axial region 35d, support the inboard input axial region 36g as the armature spindle of brushless motor 51 accurately.Inboard power shaft 36g is as described below to support the rotor of brushless motor 51 with the single armed state, and the bearing that therefore supports this inboard input axial region 36g uses loss less and be suitable for bearing representational ball bearing 40a, 40b in the rolling bearing of heavy load radially.But also can be replaced into roller bearing.

Brushless motor 51 is taked such fixed structure: promptly utilize screw 42 is installed, Open Side Down will to be installed in motor casing 43 on the shell 32b lower surface with state of insulation across insulating component 41, embed stator 52 from openend, utilize a plurality of incision projection 43a and curved pawl 43b to grip.The rotor 54 that is assembled in this stator 52 is entrenched in the rotor fitting portion 36d that is formed at inboard input axial region 36g, is fixed by the hold-doun nut 46 that is screwed on the fixed screw 36e.

More particularly, the brushless motor 51 of present embodiment is coiling stator winding 52b on stator core 52a, constitutes stator 52, stator core 52a is embedded utilize incision projection 43a and curved pawl 43b to grip in the motor casing 43.Spacer member 53 is to be used to compensate the axial dimension of this stator core 52a and to cut the member of the difference of the size between projection 43a and the curved pawl 43b.

Rotor 54 utilizes the periphery that permanent magnet pole 54b is installed on rotor core (yoke) 54a installation projection (boss) 54c of the insulating resin manufacturing of formation in aggregates with it to be installed on the inboard motor rotor fitting portion 36d that imports axial region 36g.

The engagement jog 54d that the engagement projections 47f of the sliding part 47c that is formed at engaged clutch mechanism 47 is embedded forms with this installation projection 54c resin forming in aggregates on projection 54c is installed.Projection 54c is installed forms and on the fastening end of an inner side, rotor core 54a to be exposed in the chimeric fixing size of the chimeric fixed part 36d of motor rotor, bury becket 54e underground on the fastening end of outer end one side.

Also have, by using the inboard input axial region of the chimeric fixed part of motor rotor being made the special use of short size, the installation projection 54c of rotor just also can form short size.And permanent magnet pole 54b makes the structure more outstanding than stator winding 52b, and is relative with the rotational trajectory of this protuberance, and magnetic pole detecting element 55 is set, the structure of the position of rotation that formation can detection rotor 54.This magnetic pole detecting element 55 is installed on and covers on 48.

Brushless motor 51 takes to detect the relative position with the magnetic pole 54b of each mutually relative rotor 54 of stator winding 52b, and control describes in detail and omits to each structure of power supply mutually of this stator winding 52b.Engaged clutch mechanism 47 utilizes engagement that outside rotating shaft system 35 is combined with motor rotor 54, the revolving force with reverse rotation of being rotated in the forward of rotor 54 is delivered to this outside rotating shaft system 35 and makes its rotation, or unclamp engagement this outside rotating shaft system 35 is stopped the rotation.

This engaged clutch mechanism 47 reduces for the axial overall size that makes Vidacare corp 6, utilize described installation screw 42 that the electromagnetic core 47b of the solenoid 47a of interior bag ring-type is tightened the inboard that is installed on motor casing 43 together, outside input axial region 35d is set, makes it be in surroundedness.Can be in the axial direction on the spline tooth 35b that is formed at outside input axial region 35d slidably the insulating resin system of combination sliding part 47c by helical spring 47d to pressing down, be incorporated into the engagement jog 54d of described rotor 54, utilize the electromagnetic force of described solenoid 47a to overcome the downward pressure of helical spring 47d, 47c upwards draws with sliding part, remove engagement with this, attract electromagnetic core 47b, make to rotate to stop.

Sliding part 47c is provided with the iron attraction part 47e that the hard to bear described electromagnetic core 47b of energy attracts integrally, utilizes resin molding method to be integrally formed again and embeds the engagement projections 47f that described engagement jog 54d makes its engagement.

When the attraction part 47e with sliding part 47c is attracted on the electromagnetic core 47b, in order to block this sliding part 47c it is stopped the rotation, on the adsorption plane of electromagnetic core 47b, form several radial fastening groove 47b1, on adsorption piece 47e, form several radial cards that can embed described fastening groove 47b1 and end raised line 47e1.The formation of fastening groove 47b1 makes that block sidewall that card ends raised line 47e1 is tilted to the depth direction expansion with 1～2 degree, the side inclination with 1～2 degree on preceding extreme direction that props up the side wall surface of fastening groove 47b1 launches, by means of this, make and when engagement, on the direction that stops disengagement, component takes place.

The lower end of motor casing 43 is covered with chimericly and covers 48.And the rotation detecting element (Magnetosensing element) 55 of rotation sensor is installed on this lid 48, be arranged to make this rotation detecting element 55 relative with the rotational trajectory of the permanent magnet 54b of described rotor 54.

Such Vidacare corp 6 utilizes installs the outside that screw 50 is installed on mounting seat 7 bottom of outer bucket 5.Again, the outside of this Vidacare corp 6 is covered by the enclosing cover 28 that utilizes described installation screw 50 to install with this Vidacare corp 6.

To the power supply of this brushless motor 51 instruction, carry out the empty system of PWM (pulse width modulation) and PM (pulse voltage modulation) controls by the 2nd control device 29 according to the 1st control device 17.Closing thousand PM control will narrate below.

Fig. 6 is the control loading amount of washing machine.This control device is made of the 1st control device 17 and the 2nd control device 29, and Fig. 6 is the block diagram of its concrete internal structure.Among this figure,, be omitted in power switch (console switch) 13 and the 1st relay and the 2nd relay that Figure 15 of back will describe in detail for the formation of the control relation relevant with overall control is described.Be omitted in the power circuit that Figure 16 will illustrate again.

The 1st micro computer (to call main micro computer in the following text) 17a and the 2nd micro computer (to call auxiliary micro computer in the following text) 29h constitute control circuit, take place following dc voltage generating circuit 29a (i.e. the 1st dc voltage generating circuit) is offered the 1st control signal that the voltage value of the DC voltage of inverter circuit 29b is controlled.According to the terminal voltage of the 1st control signal control capacitor C, just offer the supply voltage of inverter circuit 29b.The 2nd control signal takes place in above-mentioned control circuit.The action of the 2nd control signal control inverter circuit 29b, control offers the pulse width of brushless motor 51.Also control the direction of rotation (being rotated in the forward and reverse rotation) of brushless motor 51 according to the 2nd control signal.

Also have, for low-voltage power circuit and power switch 13 that the micro computer that makes the 1st control device 17 and the 2nd control device 29 and other circuit workings are used, omission illustrates.

The 1st control device 17 is that the center constitutes with main micro computer 17a, possess the drive circuit I7b～17d by semiconductor AC switch element (FLS) formation of control, and prevent line filter (linefilter) 17e that high-frequency noise leaks to civilian power circuit the power supply of the solenoid 47a of water supply electromagnetic valve 21, drain solenoid valve 23 and engaged clutch mechanism 47.

And main micro computer I7a is taken into the input signal of input switch group 14, level sensor 16 according to wherein the control handling procedure of packing in advance, communicate by letter with the 2nd control device 29, control is to the charging of control display element group 15 and drive circuit 17b～17d and capacitor, the dc voltage control circuit 29c that promptly terminal voltage of capacitor is controlled and the inverter circuit 29b that brushless motor 51 is powered.

The 2nd control device 29 possesses dc voltage generating circuit 29a and 3 phase inverter circuit 29b, and control is to the power supply of brushless motor 51.That is to say that control offers the pulse voltage of brushless motor 51 or the size and the time of electric current.Described size be voltage value with or the size of current value.Apply voltage in the present embodiment, provide electric current to brushless motor 51 with this.The voltage that above-mentioned voltage offers inverter circuit 29b with capacitor C is according to pulse width, just time of applying of voltage is by the 2nd signal controlling that puts on inverter circuit 29b by inverter driving circuit 29g.The DC voltage that offers inverter circuit 29b is by the 1st control signal control from auxiliary micro computer 29h.The physical circuit of the 1st control signal control DC voltage possesses dc voltage control circuit 29c, output voltage feedback resistance 29d and Control of Voltage resistance 29e.

Dc voltage generating circuit 29a possesses the civilian AC power rectification from plug 1502, the rectification circuit of output dc voltage, is full-wave rectifying diode bridge formula circuit DB.This dc voltage generating circuit 29a has such mechanism, be that built-in charging circuit as capacitor C works, as a kind of boost converter circuit of switch adjuster (regulator), the electromagnetic energy of storing in switch element S1 conduction period inductor L is transformed to voltage by means of ending of this switch element S1 and input voltage is overlapping, provide the voltage that boosts with this to capacitor C, store electric charge.And diode D1 stops the electric charge reverse flow that is stored in capacitor C, makes VD stable.Amount of boost is along with the ON time of switch element S1 changes with the ratio in its conduction and cut-off cycle.Carry out the DC voltage that full-wave rectification obtains by full-wave rectifying diode bridge formula circuit DB and be about 140V.The output voltage range of this dc voltage generating circuit 29a below about 300V carries out variable control, output to this full-wave rectified voltage.Be suitable for using IGBT and the such semiconductor element that possesses the function of ending of GTO as switch element S1 with the strength of oneself.

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 Control of Voltage resistance 29e with the output voltage of the dc voltage generating circuit 29a detection voltage of dividing potential drop, feedback in addition, the conduction and cut-off time ratio of gauge tap element S1, making this detection voltage is setting.In this embodiment, the setting of the described detection voltage suitable value of detection voltage of getting and obtaining during the output voltage stipulated (being 155V in the present embodiment).The minimum supply voltage of controlling from the 2nd control signal of auxiliary micro computer 29h that offers inverter circuit 29b is about 155V in the present embodiment.Consider soft washing (soft washing) etc., can be providing as minimum service voltage about 140V～170V.

3 phase inverter circuit 29b possess 3 bridge circuits mutually that are made of switch element S2 and inverse parallel diode D2, with the output voltage of described dc voltage generating circuit 29a as input, to 3 phase stator winding 52b of described brushless motor 51 power supply.Switch element S2 is suitable for using IGBT and the such semiconductor element that possesses the function of ending with the strength of oneself of GTO.The power supply of being undertaken by this 3 phase inverter circuit 29b is by means of utilizing inverter driving circuit 29g that the conduction and cut-off control that switch element S2 carries out is implemented under the control of auxiliary micro computer 29h.In order undisturbedly to drive brushless motor 51 with high efficiency, it is suitable using sinusoidal wave power supply.3 phase inverter circuit 29g utilize sinusoidal wave PWM control to realize sinusoidal wave power supply, utilize voltage to suppress PWM control suppressing the overload electric current again.

Sinusoidal wave PWM control has the virtual value of the output voltage V of making to keep the certain constant sinusoidal wave PWM control mode of V and the constant sinusoidal wave PWM control mode of V/F of the relation maintenance certain value that makes output voltage V and frequency F.The constant sinusoidal wave PWM control mode of V can realize maximally utilising the power supply of the input voltage of 3 phase inverter circuit 29b, and if adopt the constant sinusoidal wave PWM control mode of V/F, then can realize brushless motor 51 high efficiency power supplies.

Fig. 7 A, Fig. 7 B represent to adopt the oscillogram of the constant control of V/F of sinusoidal wave PWM control.In order to make V/F keep constant, shown in Fig. 7 A, with sine wave and triangular wave contrast, to be the conduction and cut-off control that the impulse waveform string shown in Fig. 7 B that benchmark obtains when changing sinusoidal wave peak value is used in the switch element S2 of 3 phase inverter circuit 29g with the triangular wave, and can realize sinusoidal wave approximate PWM control mode by means of this.

Utilize the integration timer pulse unit (integrated timer pulse unit is called for short ITU) of auxiliary micro computer 29h to generate triangular wave, will assist the internal data of micro computer 29h to make sine wave.The internal data of the sine wave of each frequency for the carrier frequency (for example 16KHz) that improves triangular wave, is not all to carry out computing at every turn, is keeping using but the result who will be in advance each frequency be carried out computing weaves into table.

The constant sinusoidal wave PWM control of V handle is set at the certain value that can obtain maximum output voltage with respect to input voltage with the size of the sine wave of triangular wave contrast, can realize utilizing to greatest extent the sine wave power supply of input voltage by means of this.

At Fig. 6, the instruction that auxiliary micro computer 29h comes according to main micro computer 17a, detection signal according to magnetic pole detecting element 55, rotating position signal with reference to the rotor of exporting from position detecting circuit 29f 54, control inverter drive circuit 29g makes it power to corresponding stator winding 52b, again, 29e controls to Control of Voltage resistance, implements the control of the VD of change dc voltage generating circuit 29a.Again, the electric current of the winding of inflow motor 51 is detected by current detection circuit 205.

Dc voltage control circuit 29c controls dc voltage generating circuit 29a as mentioned above, makes detected voltage reach setting (155V that is equivalent to output voltage).Then, preestablish circuit constant with the output voltage (155V) of regulation, the detection voltage when making the control terminal of Control of Voltage resistance 29e all be in off-state is setting.Therefore, utilize auxiliary micro computer 29h to make all control terminals of Control of Voltage resistance 29e be in the method for off-state, dc voltage control circuit 29c controls DC voltage change circuit 29c, with the output voltage (155V) that obtains stipulating.Then, auxiliary micro computer 29h utilized the method for any control terminal short circuit (connecting) that makes Control of Voltage resistance 29g when output voltage was risen, and the detection voltage that feeds back to dc voltage control circuit 29C is descended.So, dc voltage control circuit 29c just carries out the control that the output voltage that makes dc voltage generating circuit 29a rises, and makes the detection voltage of reduction rise to the detection voltage of regulation.In the present embodiment, utilize the method for the control terminal of Control of Voltage resistance 29e being carried out switch control, make the output voltage of dc voltage generating circuit 29a go up variation at multilevel voltage (for example 155V, 185V, 190V, 210V, 230V, 270V).In this embodiment, the 1st control signal represents which resistance of Control of Voltage resistance 29e is disconnected.In a word, the bias voltage as dc voltage control circuit 29c provides.Also can replace this method, adopt the method for the 1st control signal as data signal takes place.Finally, (or duty, i.e. working method) is controlled as long as conducting deadline of semiconductor switch S1, and desirable voltage comes across between the terminal of capacitor C and gets final product.

The washing that in a single day main micro computer 17a receives from input switch group 14 begins indication, just manually or automatically sets washing mode and dehydration mode according to the indication input of input switch group 14, carries out washing mode and the dehydration mode set.As shown in Figure 9, washing mode is for example to detect operation, washing procedure and rinsing process.Dehydration mode is a dehydration procedure.

Fig. 8 is illustrated in the control that main micro computer 17a carries out in the basic washing dehydration pattern to handle.

Step 801 (detection of cloth amount or cloth matter) is carried out the detection of cloth amount or cloth matter.This testing result is used in the setting of the quantity delivered and the various conditions in washing mode and the dehydration mode of slurry.At first, when dropping into washtub and hold concurrently dried state before supplying water of the clothing of dehydration barrel 2,, make and stir wing wheel 4 rotations, go out the cloth amount (s1 of Fig. 9) of dried cloth according to load resistance size detection at this moment to brushless motor 51 power supplies.The detection of load resistance size is that this rotary speed when detecting the rotary speed of brushless motor 51 and stablizing is carried out.Load resistance was big when the cloth amount was many, the rotary speed step-down, and therefore the method for the relation of rotary speed and load resistance (dried cloth cloth amount) is obtained in utilization in advance, can detect dried cloth cloth amount according to rotary speed at this moment.The testing result of this dried cloth cloth amount is used to determine the quantity delivered of slurry in the present embodiment.

Then, open electromagnetism feed water valve 21, till the water level of the regulation that in washtub is held concurrently dehydration barrel 2 (outside bucket 5), supplies water.The water level of this regulation is to be used to make the wetting low water level of clothing that will wash.Then, make to brushless motor 51 power supply once again and stir wing wheel 4 rotations, go out the 1st wet cloth amount (s2 of Fig. 9) according at this moment load resistance size detection.Thereafter, supplying water rises water level, makes to brushless motor 51 power supplies once again and stirs wing wheel 4 rotations, goes out the 2nd wet cloth amount (s3 of Fig. 9) according at this moment load resistance size detection.At this moment water level detecting is to be undertaken by the water level detecting signal that monitors level sensor 16 outputs.

Testing result according to the 1st wet cloth amount detects cloth matter with the 2nd difference that wets cloth amount testing result, is used to determine to wash and the condition of dehydration mode.In the detection of this cloth amount or cloth matter, stir wing wheel 4 rotations in order to make, the minimum output voltage v1 that the VD of dc voltage generating circuit 29a is got this dc voltage generating circuit 29a when brushless motor 51 power supply (gets 155V, the t1 of Fig. 9～t2) in the present embodiment.In order to improve accuracy of detection, it is favourable that the VD that at this moment offers inverter circuit 29b is got than low value.

Reason is, Vidacare corp 6 when carrying out these detections is energized the solenoid 47a of engaged clutch mechanism 47, electromagnetic attraction is taken place in adsorption piece 47e, heading on coil spring 47d upwards draws sliding part 47c, make the engagement projections 47f of this sliding part 47c leave the engagement jog 45c3 of motor rotor 45, adsorption piece 47e is adsorbed on the electromagnetic core 47b, and the rotation of rotating shaft system 35 outside the snap action of utilizing card to end raised line 47e1 and fastening groove 47b1 suppresses (washtub hold concurrently dehydration barrel 2) stops it.Under such state, make rotor 54 rotations to the stator coil 52b of brushless motor 51 power supply, import axial region 36g from the inboard, pass to inboard output axial region 36c after slowing down through planetary gear 36i and make 4 rotations of stirring wing wheel.

Time when detecting operation and till the washing procedure of back, (t1～t2), shown in Fig. 9 (M), the output voltage of dc voltage generating circuit 29a was maintained at the voltage v1 of regulation.Can be maintained at more than the minimum voltage v1.

The water level of step 802 during according to detected dried cloth cloth amount decision washing, water level when this washing then supplies water.Step 803 set with cloth matter and dirty stolen goods degree corresponding washing pattern after carry out the washing procedure (t2 of Fig. 9～t3).Preparation has that to comprise multiple (be by stirring wing wheel 4 and the washtub stirring intensity that dehydration barrel 2 produces of holding concurrently by washing intensity, mean the intensity of washing current) control program of the washing mode that constitutes with wash time, can select washing mode automatically according to the dirty stolen goods degree of described cloth quality inspection survey result and 14 inputs of input switch group, or select one to carry out according to the input indication of switches set 14.Also can import the intensity of the current of washing in this case.

In the present embodiment, this washing intensity, distinguishes is strong washing (washing of big thing) A, standard wash B, medium washing (little load washing) C, weak washing D, and the degree of preparing with good grounds dirty stolen goods is divided into the washing intensity of using with the dirty stolen goods standard degree very dirty stolen goods (the washing intensity of A1～D1) and the low usefulness of dirty stolen goods degree (the differentiation E of the differentiation of two kinds the washing intensity (washing current) of A2～D2) and fainter little washing intensity (washing current), what be suitable for the washing that does not damage dress material that drymark dress material and very thin dress material use makes the hold concurrently differentiation F of washing intensity (washing current) of dehydration barrel 2 forward and reverse rotations of washtub, what be suitable for washing the such big part clothes article of bed clothes makes the washtub differentiation G of dehydration barrel 2 folk prescriptions to the washing intensity (washing current) of slow rotation that hold concurrently.Select the voltage v2 of the capacitor of Fig. 9 according to the power of washing.The situation height that v2 selects more small and weakly than current under the strong situation of current.And can be shown in dotted line, temporarily be enhanced to v10, be reduced to v11 then.Do like this, can be with the strength reduction of current, and also the torque when making the rotation beginning improves.

Make the in service of the washing intensity, distinguishes that stirs wing wheel 4 forward and reverse rotations, the solenoid 47a of engaged clutch mechanism 47 is energized, 47c upwards draws with sliding part, remove the engagement of this sliding part 47c and rotor 45, adsorption piece 47e is adsorbed on the electromagnetic core 47b, making card end raised line 47e1 engages with fastening groove 47b1, the outside input axial region 35d of portion is stopped the rotation, the washtub dehydration barrel 2 of holding concurrently is remained static, power to stator coil 52b, make rotor 54 forward and reverse rotations, make this rotation by inboard input axial region 36g with this, planetary gear 36i, inboard output axial region 36c is delivered to and stirs wing wheel 4.Stir that wing wheel 4 is rotated in the forward and reverse rotation between, inverter temporarily stops to the power supply of motor 51, but the output voltage of dc voltage generating circuit 29a can not drop to 0.Be maintained at more than the v1 of Fig. 9.In the present embodiment, to keep the result with the detection operation of t1～t2 be the setting value of foundation to t2～t3.Guarantee starting torque easily like this.

Hold concurrently in the washing intensity, distinguishes of dehydration barrel 2 forward and reverse rotations making washtub, make the elimination of energizing of the solenoid 47a of engaged clutch mechanism 47, utilize helical spring 47d sliding part 47c to pressing down, the engagement jog 54d that the engagement projections 47f of this sliding part 47c is embedded rotor 54 makes its engagement form the state that links with this rotor 54, power to stator coil 52b, make rotor 54 forward and reverse rotations, this rotation is delivered to the washtub dehydration barrel 2 of holding concurrently by the outside input axial region 35d of portion, gear-box 35e, outside output axial region 35a.Therefore at this moment, planetary gears loses deceleration, stirs dehydration barrel 2 rotations synchronous, in aggregates of holding concurrently of wing wheel 4 and washtub.In this case, utilize the operation that makes the washing intensity, distinguishes that stirs wing wheel 4 forward and reverse rotations to improve the voltage of capacitor, can raise the efficiency with this.Have and to improve the supply voltage that gives brushless motor 51, even under the situation that the rotary speed of brushless motor 51 uprises, also can supply with the effect of electric current.Washtub hold concurrently that dehydration barrel 2 is rotated in the forward and reverse rotation between, 3 phase inverter circuit 29b temporarily stop to the power supply of brushless motor 51, but the output voltage of dc voltage generating circuit 29a can not drop to 0.Be maintained at more than the v1 of Fig. 9.In the present embodiment, to keep the result with the detection operation of t1～t2 be the setting value of foundation to t2～t3.Guarantee starting torque easily like this.

And in washtub is held concurrently washing intensity, distinguishes that dehydration barrel 2 unidirectional continuous rotations wash, under the connecting state that makes 47 engagements of engaged clutch mechanism,, make brushless motor 51 unidirectional continuous rotations to stator coil 52b power supply.The output voltage of the dc voltage generating circuit 29a of this state, if the slurry amount is more not different, then select when stirring the forward and reverse rotation of wing wheel 4 height.And it is also high when making washtub hold concurrently the operation of washing intensity, distinguishes of dehydration barrel 2 forward and reverse rotations.

Washing intensity (washing current) changes with rotation time limit (the conduction and cut-off time ratio of power supply) because of the output torque of brushless motor 51.The power (size) of the output torque of brushless motor 51 can utilize dc voltage generating circuit 29a VD height control and 3 mutually the sine voltage in the PWM control of inverter circuit 29b suppress (peak value) control realization.Again, the rotation time limit can utilize predefined control program to control.

For example in the strong washing A1 that the very dirty stolen goods of clothing are used, the VD of dc voltage generating circuit 29a is set in the certain value of 210V, with 1.4 seconds (direct rotational direction power supply)/0.9 second (stopping)/1.4 second (power supply of despining direction)/0.9 second (stopping) ... repeat 3 phase inverter circuit 29b to the power supply (sinusoidal wave PWM) of brushless motor 51 and forward and reverse rotation time limit of stopping.Equally, in the standard wash B1 that the very dirty stolen goods of clothing are used, the VD of dc voltage generating circuit 29a is set in the certain value of 230V, with 1.1 seconds (power supply)/0.9 second (stopping) repeat 3 phase inverter circuit 29b to the power supply of brushless motor 51 and stop.Again, in the moderate strength washing C1 that the very dirty stolen goods of clothing are used, the VD of dc voltage generating circuit 29a is set in the certain value of 190V, with 0.8 second (power supply)/1.0 second (stopping) repeat 3 phase inverter circuit 29b to the power supply of brushless motor 51 and stop.Again, in the weak washing D1 that the very dirty stolen goods of clothing are used, the VD of dc voltage generating circuit 29a is set in the certain value of 190V, with 0.5 second (power supply)/0.7 second (stopping) repeat 3 phase inverter circuit 29b to the power supply of brushless motor 51 and stop.

And it is relative therewith, in the strong washing A2 of the low usefulness of the dirty stolen goods degree of clothing, the VD that repeats to implement dc voltage generating circuit 29a in the positive and reverse return veer is set in 210V, implemented by the power supply of 3 phase inverter circuit 29b with 0.3 second brushless motor 51, with big output torque starting, then make the VD of dc voltage generating circuit 29a drop to 185V, implement 1.1 seconds power supply, continue rotation with little output torque, implement the control of stopping for 1 second thereafter.Again, in the standard wash B2 of the low usefulness of the dirty stolen goods degree of clothing, the VD that repeats to implement dc voltage generating circuit 29a in the positive and reverse return veer is set in 210V, implemented by the power supply of 3 phase inverter circuit 29b with 0.3 second brushless motor 51, with big output torque starting, then, sinusoidal wave PWM control auxiliary voltage restriction PWM control to 3 phase inverter circuit 29b, by means of this, implement the power supply to brushless motor 51 in 1.5 seconds, the peak value that the sine voltage that provides is provided is 140V, continues to implement the control of stopping for 1 second thereafter with little output torque rotation.Again, in the medium washing C2 of the low usefulness of the dirty stolen goods degree of clothing, the VD that repeats to implement dc voltage generating circuit 29a in the positive and reverse return veer is set in 210V, implemented by the power supply of 3 phase inverter circuit 29b with 0.3 second brushless motor 51, with big output torque starting, then, sinusoidal wave PWM control auxiliary voltage restriction PWM control to 3 phase inverter circuit 29b, by means of this, implement the power supply to brushless motor 51 in 1.5 seconds, the peak value that the sine voltage that provides is provided is 115V, continues to implement the control of stopping for 1.0 seconds thereafter with little output torque rotation.Again, in the weak washing D2 of the low usefulness of the dirty stolen goods degree of clothing, the VD that repeats to implement dc voltage generating circuit 29a in the positive and reverse return veer is set in 210V, implemented by the power supply of 3 phase inverter circuit 29b with 0.3 second brushless motor 51, with big output torque starting, then, sinusoidal wave PWM control auxiliary voltage restriction PWM control to 3 phase inverter circuit 29b, by means of this, implement the power supply to brushless motor 51 in 1.5 seconds, the peak value that the sine voltage that provides is provided is 90V, continues to implement the control of stopping for 1.0 seconds thereafter with little output torque rotation.

Adopt like this in the control that voltage is reduced, can access to rotate reliably and stir wing wheel 4 startings, reduce to act on the mixing power on the clothing of washing thereafter, reduce effect the damage of clothing cloth with big torque to brushless motor 51 power supplies.

Again, in little washing E, the VD of dc voltage generating circuit 29a is set in the certain value of 190V, with 0.5 second (power supply)/1.0 second (stopping) repeat 3 phase inverter circuit 29b to the power supply of brushless motor 51 and stop.

Again, hold concurrently among the washing intensity, distinguishes F of dehydration barrel 2 forward and reverse rotations making washtub, carry out and for example implement repeatedly the VD of dc voltage generating circuit 29a is set in 155V in the positive and reverse return veer, sinusoidal wave PWM control auxiliary voltage restriction PWM control to 3 phase inverter circuit 29b, implement the power supply to brushless motor 51 in 6 seconds by means of this, the peak value that the sine voltage that provides is provided is 80V, continuation is slowly rotated with little output torque, the bucket rotation washing F1 of the control that enforcement was thereafter stopped for 3.0 seconds, the bucket rotation washing F3 that powers and stopped for 2 seconds after the bucket rotation washing F2 that stopped after 4 seconds for 3 seconds and 3 seconds of power supply.

Again, in washtub is held concurrently washing intensity, distinguishes G that dehydration barrel 2 rotates on a direction continuously, prepare to carry out and for example on a direction, implement repeatedly the VD of dc voltage generating circuit 29a is set in 155V, sinusoidal wave PWM control auxiliary voltage restriction PWM control to 3 phase inverter circuit 29b, by means of this, implement the power supply to brushless motor 51 in 6 seconds, the peak value that the sine voltage that provides is provided is 35V, continuation is slowly rotated with little output torque, the bucket rotation washing of the control that enforcement was thereafter stopped for 6.0 seconds.

And washing mode to 7 grades of various dirty stolen goods degree set, selects one to carry out the combination of degree and the described washing intensity and the wash time of dirty stolen goods.When utilizing the indication of the automatic selection of input switch group input, the setting of carrying out according to the indication of input switch group 14 input or survey the result according to the dirty stolen goods degree (the dirty stolen goods of very dirty stolen goods, standard degree, slight dirty stolen goods) that dirty stolen goods degree detecting is set with the cloth quality inspection and select automatically, during from the manual selection of input switch group 14 indication inputs, manually select according to this indication input.

The 1st washing mode group M1 is the washing mode group of the clothing of very dirty stolen goods, for example prepare to have the washing mode M11 of the washing in 15 minutes of strong washing A1, by force wash A1 washing in 12 minutes washing mode M12, standard wash B1 washing in 12 minutes washing mode M13, standard wash B1 washing in 10 minutes washing mode M14, medium washing C1 washing in 8 minutes washing mode M15, weak washing D1 washing in 6 minutes washing mode M16, slightly wash washing mode M17 totally 7 grades of the washing in 6 minutes of E.

The 2nd washing mode group M2 is the washing mode group of the clothing of the dirty stolen goods of standard degree, for example prepare to have the washing mode M21 of the washing in 10 minutes of strong washing A1, by force wash A1 washing in 6 minutes washing mode M22, standard wash B1 washing in 6 minutes washing mode M23, standard wash B1 washing in 5 minutes washing mode M24, medium washing C1 washing in 5 minutes washing mode M25, weak washing D1 washing in 4 minutes washing mode M26, slightly wash washing mode M27 totally 7 grades of the washing in 3 minutes of E.

The 3rd washing mode group M3 is multiple washing intensity combination, constitute the washing mode group that the clothes washing of the slight dirty stolen goods of various washing modes is used, carrying out the bucket rotation washing F2 time after for example preparation had wash in 5 minutes of strong washing A2 is 1 minute and 30 seconds, and then carry out standard wash B2,4 minutes time, carry out the bucket rotation washing F2 time and be 1 minute 30 seconds washing mode M31 thereafter, carrying out the bucket rotation washing F2 time after the washings in 4 minutes of strong washing A2 is 1 minute and 30 seconds, carrying out the standard wash B2 time again is 3 minutes, carry out the bucket rotation washing F2 time then and be 1 minute 30 seconds washing mode M32, carrying out the bucket rotation washing F2 time after the washings in 4 minutes with standard wash B2 is 1 minute and 30 seconds, carry out standard wash B2 again, 3 minutes time, carry out the bucket rotation washing F2 time then and be 1 minute 30 seconds washing mode M33, carrying out the bucket rotation washing F2 time after the washings in 4 minutes with medium washing C2 is 1 minute and 30 seconds, carry out standard wash B2 again, 3 minutes time, carry out the bucket rotation washing F2 time then and be 1 minute 30 seconds washing mode M34, carrying out the bucket rotation washing F1 time after the washings in 4 minutes of medium washing C2 is 1 minute and 30 seconds, carry out standard wash B2 again, 2 minutes time, carry out the bucket rotation washing F1 time and be 1 minute 30 seconds washing mode M35 thereafter, carrying out the bucket rotation washing F1 time after the washings in 4 minutes of weak washing D2 is 1 minute and 30 seconds, carry out weak washing D2 again, 2 minutes time, carry out the bucket rotation washing F1 time then and be 1 minute 30 seconds washing mode M36, carrying out the bucket rotation washing F1 time after the washings in 2 minutes of weak washing D2 is 1 minute and 30 seconds, carry out weak washing D2 again, 1 minute time, carry out the bucket rotation washing F1 time then and be 1 minute 30 seconds washing mode M36, totally 7 grades.

These washing modes are to use the control criterion of the washing procedure of the such cold water of running water, so in the washing procedure that uses the such warm water of bathroom surplus water, can the washing strength reduction be shortened wash time.

Such washing procedure is selected decision by the washing mode that main micro computer 17a surveys result or 14 settings of input switch group according to the cloth quality inspection, according to the control program of this pattern, control dc voltage generating circuit 29a, 3 phase inverter circuit 29b and engaged clutch mechanism 47 carry out.Shown in Fig. 9 (M) is that dc voltage generating circuit 29a in the washing procedure is to an example of the supply voltage of inverter circuit 29b.

Step 804 execution rinsing process (t3 of Fig. 9～t13).This rinsing process can move the execution that combines to water filling rinsing operation and retaining rinsing.In order to improve rinse efficiency, when draining, also can add more weak dehydration (rinsing dehydration) operation of strength of short time again.Also have, take in rinsing, to make the washtub dehydration barrel 2 of holding concurrently slowly to rotate water fillings on one side, promote that the water filling rinsing operation that the washings of dirty stolen goods are emitted and the method for usefulness also are effective.

This rinsing dehydrating operation is control like this, is exactly the degree change dehydration power according to cloth matter and dirty stolen goods.For example for the clothing of very dirty stolen goods and the clothing of the dirty stolen goods of standard degree, make the washtub dehydration barrel 2 of holding concurrently carry out dehydrating operation, and mode that rotating speed rises and running time (from the total time of starting beginning) can change according to cloth matter with the rotating speed rotation of 900rpm.Specifically, 4 minutes the 1st rinsing dehydration mode of operation that has rotating ratio more slowly to rise, 2 minutes 40 seconds the 2nd rinsing dehydration mode of the operation that rotating ratio rises more rapidly, use intermediate speed region (2 minutes 30 seconds the 3rd rinsing dehydration mode of the operation of 200～330rpm) rapider risings, use 2 minutes 20 seconds the 4th rinsing dehydration mode of operation of the rapider rising of intermediate speed region, use low-speed region (0～130rpm) and 3 minutes 10 seconds the 5th rinsing dehydration mode of operation that more slowly rises of intermediate speed region, use that intermediate speed region more slowly rises and 2 minutes 30 seconds the 6th rinsing dehydration mode of operation that more suddenly rise than other zones.

Also have, the rinsing dehydration mode of the clothing that dirty stolen goods degree is low is that the hold concurrently rotary speed of dehydration barrel 2 of above-mentioned washtub is reduced (about 800rpm) a little and constitutes.

These rinsing dehydration mode select wherein 1 to carry out with each washing mode in the above-mentioned washing procedure linkedly.

The indication that to be auxiliary micro computer 29h come according to main micro computer 17a of control like this to the rotating speed rising characteristic to the VD of dc voltage generating circuit 29a with 3 mutually inverter circuit 29b control, change the output torque realization of brushless motor 51.。Auxiliary micro computer 29h can export big torque in order to make brushless motor 51, control dc voltage generating circuit 29a makes it export than higher certain voltage (more than the 250V, be 270V in the present embodiment), 3 phase inverter circuit 29b are carried out speed feedback control, and making the rotating speed rising characteristic is characteristic recited above.The washtub dehydration barrel 2 of holding concurrently is driven, drive with the rotating speed rotation identical with brushless motor 51, therefore, can discern 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, to realize to the hold concurrently rotating speed control of dehydration barrel 2 of washtub.The supply voltage that dc voltage generating circuit 29a offers inverter circuit 29b when dehydrating operation preferably begins with the voltage more than the 200V, provides at t4.Perhaps preferably when dehydrating operation, the voltage of described capacitor is maintained at the voltage value higher than v0, utilizes the control of described 3 phase inverter circuit 29b that the rotating speed rising characteristic of brushless motor 51 is controlled.Here, described voltage v0 is shown below: v0=v1+ (v2-v1)/2, v1 represents that (the minimum condenser voltage among the t3 of Fig. 9～t13) under the state of output dc voltage, v2 is illustrated in the highest condenser voltage of described rinsing process to dc voltage generating circuit 29a at rinsing process.

Step 805 is carried out the dehydration procedure after the rinsing process, and promptly last dehydration procedure (t13～t14).This dehydration procedure is with described washing procedure and rinsing process is the same controls, to change dehydration power according to cloth matter and dirty stolen goods degree.Dehydration after the rinsing has much relations to the clothing generation gauffer of washing.Therefore, preferably dehydration is controlled to and makes the least possible generation of gauffer.Dehydration power depends on the rotating speed and the duration of runs that washtub is held concurrently dehydration barrel 2.In order to realize that few dehydrating operation takes place gauffer, preparing in the present embodiment has the multiple dehydration mode that can select execution according to cloth matter.

In the present embodiment, it is 900rpm that various dehydration mode are taked the hold concurrently speed setting of dehydration barrel 2 of washtub, changes the structure of rotating speed rising mode and running time (from the summation of the time that starting begins).

This dehydration mode (dehydration mode after the rinsing process) has in low-speed region (0～130rpm) slow anxious then 9 minutes the 1st dehydration mode of elevator row on the ground that rises, same 8 minutes the 2nd dehydration mode of operation that rises, same 7 minutes the 3rd dehydration mode of operation that rises, in low-speed region (0～130rpm) relatively more anxious 6 minutes the 4th dehydration mode of operation that rises, same 5 minutes the 5th dehydration mode of operation that rises, same 4 minutes the 6th dehydration mode of operation that rises, same 3 minutes the 7th dehydration mode of operation that rises.

Rotating speed control in this dehydration mode is also the same with the rotating speed control in the above-mentioned rinsing dehydration procedure, can export big torque in order to make brushless motor 51, dc voltage generating circuit 29a controlled make its output than higher constant voltage (more than the 250V, get 270V in the present embodiment), and 3 phase inverter circuit 29b are carried out speed feedback control so that the rotating speed rising characteristic is a characteristic recited above.

Main micro computer 17a controls display element group 15 in these steps, and the state that the state of display setting and operation are carried out makes the buzzer alarm sounds with washing when rinsing finishes when generation is unusual.

Utilize more small-sized brushless motor 51 in order to obtain various only rotary speed property recited above, when more intense rotary driving force of needs and high rotation speed, the VD (terminal voltage of capacitor C) of dc voltage generating circuit 29a is risen, keep steady state value than higher voltage, when the more weak rotary driving force of needs and the slow-speed of revolution, the VD of dc voltage generating circuit 29a is maintained at lower steady state value, under such state, utilizes 3 phase inverter circuit 29b to carry out voltage and suppress PWM control.When dehydrating operation, preferably when starting dc voltage generating circuit 29a offer the voltage of 3 phase inverter circuit 29b, the voltage v6 of Fig. 9 (M) gets more than the 200V.The voltage of perhaps preferably keeping described capacitor when the dehydrating operation of dehydration procedure is higher than the value of voltage v0, utilizes the control of described inverter circuit that the rotating speed rising characteristic of brushless motor is controlled.Described here voltage v0 is shown below: v0=v1+ (v2-v1)/2, v1 represents that (the minimum condenser voltage among the t3 of Fig. 9～t14) under the state of output dc voltage, v2 is illustrated in the highest condenser voltage in the described rinsing process to described dc voltage generating circuit at rinsing process or dehydration procedure.

The control characteristic for the VD (terminal voltage of capacitor C) of the suitable dc voltage generating circuit 29a of such operation control represented in Fig. 9 summary.In the figure, t1 is the moment that the washing machine power switch is connected.From this constantly dc voltage generating circuit 29a begin to provide the DC voltage of regulation.Again, dc voltage generating circuit 29a keeps the DC voltage supply of regulation before the t15 dump.Like this, various operation can be started smoothly.Again, can offer other operating equipments and driving arrangement to the output of dc voltage generating circuit 29a, can provide to control device again.

(t1～condenser voltage cut-off t2) flowed the minimum voltage v1 (being set at 155V in the present embodiment) of the control reference voltage of voltage generating circuit 29a, and is maintained at steady state value when cloth amount or cloth matter drove 4 rotations of stirring wing wheel in order to detect.Then, carry out making for 3 times stirring wing wheel 4 to drive (dried cloth cloth amount detects s1, the 1st wet cloth amount detection s2, the 2nd wet cloth amount detects) with the rotation of lower rotation speed n 1 rotation.

(among the t2～t3), make condenser voltage rise to and be maintained at steady state value at washing procedure than higher voltage v2.The rotary speed n2 ratio that stirs wing wheel 4 in this washing procedure detects height when moving.And, for the degree according to cloth matter and dirty stolen goods has variation miscellaneous, as required, as v10, v11, make its variation.In the present embodiment, be set at 185V～230V.Use high like this voltage, be easy to carry out the drive controlling of multiple stirring intensity.

In rinsing process, (t3～t4) make condenser voltage get back to minimum voltage v1 will wash washings and dewater and (during t4～t5), make voltage rise to ceiling voltage v3 and keep steady state value driving washtub dehydration barrel 2 rotations of holding concurrently during draining.At this moment, drive washtubs dehydration barrel 2 rotations of holding concurrently with high rotation speed n 3.Quicken smoothly in order to control the washtub dehydration barrel 2 of holding concurrently, as required, also can make the voltage rising through medium voltate v12 ladder ground.In the present embodiment, ceiling voltage v3 is set at 270V.Such high voltage is fit to be used in the big washtub of the inertia load dehydration barrel 2 of holding concurrently is carried out drive controlling.

Thereafter, at (t6～t7) when driving washtub and hold concurrently dehydration barrel 2 rotation water filling rinsings, condenser voltage is maintained at peak v4 and keeps constant, utilize 3 phase inverter circuit 29b to control, make washtub hold concurrently dehydration barrel 2 with stir wing wheel 4 and slowly rotate (n4).

(t8～t10), make condenser voltage return minimum voltage v1 as required, makes voltage rise to higher voltage v13 when carrying out rinsing to make stirring wing wheel 4 slowly rotate (n5, n6).

(among the t11～t12), stir dehydration barrel 2 rotation (n7) at a high speed of holding concurrently of wing wheel 4 and washtub, make voltage rise to peak v5 in the dehydration of following in order to make.

Between t12～t13, repeat control recited above N time.

Dehydration procedure after rinsing process, be that last dehydration procedure (among the t13～t14), to stir dehydration barrel 2 rotation (n8) at a high speed of holding concurrently of wing wheel 4 and washtub in order making, to make voltage rise to peak v6.

Then, in the end dehydration procedure finishes back (t15), and dc voltage generating circuit 29a stops output dc voltage.

In the above-described embodiments, drive motor uses brushless motor, but also can use the motor of other modes.Again, 3 phase inverter circuits also can change to other inverter circuits.

As mentioned above, in this embodiment, be to offer motor that the inverter in the Vidacare corp drives with civilian ac voltage rectifier and after boosting, therefore can effectively utilize the output characteristics of motor, realize high efficiency washing or dehydration procedure with small-sized motor.

Therefore, can realize careful washing rinsing and dehydration procedure can providing the washing machine that to realize multiple washing rinsing and dehydrating operation according to amount, the matter of the clothing of washing, the form of contamination etc.

Figure 10 is the key diagram of vector controlled of the motor 51 (being brushless motor in the figure) of example when moving with laundry machine dehydration.Represent the real axis on the complex number plane under the state of the equivalent circuit of motor 51 among the consideration figure with the d axle, represent the imaginary axis with the q axle.And Vi represents the vector of the voltage that inverter circuit 29b provides to 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 electric current I m (vector) expression inflow motor 51.Electric current I m measures with for example resistance 205.EO is the induced voltage of motor 51, voltage Vi as shown in the figure, be the voltage vector that causes of the reactive component of the voltage vector rIm of resistive component r of the motor that causes of induced voltage EO, motor current Im and motor ω rLIm vector and.

For the torque of motor 51 takes place expeditiously, preferably the vector of electric current I m is come on the q axle.Therefore when dehydrating operation for the rotating speed of the dehydration barrel 2 that improves washing machine effectively, the phase place δ of voltage Vi and voltage Vi is controlled, the vector of motor current Im is come on the q axle.Though with the dehydrating operation is that example is illustrated, in servicely is rotated and torque will takes place expeditiously when driving also as long as use identical idea to control to stirring wing wheel 4 and dehydration barrel 2 at other.Also having above-mentioned ω r is the angular speed of rotation, the rotating speed of induced voltage EO and motor, is the ω r increase that is directly proportional.

Then, to make the postrotational brake of washtub high speed be controlled to be example when the dehydrating operation, describe running slowly.Figure 11 is the polar plot of the running status when being illustrated in motor 51 generation decelerative forces.Can consider for example state of dehydration barrel 2 high speed rotations here as deceleration regime.The dehydration barrel of putting under the state of clothing of washing 2 has bigger quality, and therefore the dehydration barrel of rotating at a high speed has higher kinetic energy.This dehydration barrel being underspeeded rapidly just must consume above-mentioned kinetic energy rapidly, is to consume as the heating of motor in control method illustrated in fig. 11.Because washing machine just made water originally, if for example being dispersed into around the motor body of the washing machine etc., the heat that motor is sent locates, then above-mentioned heat energy is absorbed easily, can not cause that the unusual condition of high temperature takes place.That is to say that even deceleration of dehydration barrel etc. causes that temporary transient kinetic energy is converted to the situation of heat energy in washing machine, this heat energy also can access abundant absorption.

As present embodiment, control in the control mode of the voltage that inverter is provided, as dehydrating operation, when motor rotates at a high speed or under the big situation of motor load, consider that the supply voltage that with the terminal voltage of capacitor C, promptly offers inverter circuit 29b is set at the higher voltage value.At this moment, make the induced voltage EO of motor 51 return mains side, EO consumes with induced voltage, and so, the terminal voltage of the voltage of inverter circuit 29b or capacitor C uprises, and the requirement of withstand voltage of the part that uses in these circuit is also just high.When the supply voltage of other devices takes place the voltage that utilizes capacitor C,, just need take some countermeasures in order these devices not to be produced harmful effect again.Because these problems are arranged, preferably make the few return voltage side of induced voltage EO, force down the rising of voltage as far as possible.These problems had both been considered, in the present embodiment, had consumed as far as possible that the prevention generated energy turned back to the inverter as mains side as heat.

In Figure 11, slow down in order to make motor 51, as mentioned above, the electric power that induced voltage EO produces need be consumed.For this reason, the voltage Vi and the phase place δ that 3 phase inverter circuit 29b are offered motor 51 control, and the q axle component Vq of voltage Vi is in rp state with the voltage near induced voltage EO.Here voltage Vi can infer according to the rotary speed ω r (being N) of motor and induced voltage EO on this basis, can serve as according to the value that is predetermined voltage Vi with it therefore, and the voltage Vi of this regulation is provided when running slowly.

Above-mentioned voltage Vi is the voltage that offers motor 51 according to the PWM control that utilizes inverter to carry out as mentioned above.For example in the deceleration when dehydrating operation, as shown in Figure 9, the Control of Voltage that offers inverter by capacitor C is the low voltage value (V1 of Fig. 9) of voltage (V6 of Fig. 9) when motor is quickened.In order to carry out the PWM control of inverter, then determine phase place δ and voltage Vi, the q axle component of voltage Vi becomes-EO (vector).Control inverter circuit on this basis.That is the control impuls that produces Fig. 7 (B) controls inverter, and the voltage Vi (alternating voltage waveform shown in a of Fig. 7) that will have above-mentioned phase place δ offers motor.

But with voltage Vi be controlled to be steady state value then motor current Im might become high unusually.Therefore preferably voltage Vi does not keep constant.For example motor current Im is measured, infer Im from the electric current of measuring under situation about can not directly measure, or regard the current value of measuring as Im, Vi controls to voltage.That is to say that the Im that is controlled to be at said determination than under the big situation of predetermined value, reduces voltage Vi, and under the Im of the said determination situation littler, voltage Vi is increased than predetermined value.

Figure 13 is the figure of data mode of the memory of the expression predetermined value that records phase place δ.N is the rotating speed of motor 51, for example uses the table till the 1000rpm of 100rpm scale.The scale of described table is determined by control accuracy.Scale more slightly makes control accuracy reduce, and it is big that the difference of the q axle component Vq of then above-mentioned induced voltage EO and voltage Vi becomes, and the voltage rising and the influences such as control is not easy to work of slowing down between Terminal of motor occur.It is desirable to make voltage Vq and induced voltage EO is identical voltage (vector opposite direction), but is difficult on the reality.Therefore preferably with respect to induced voltage EO, be controlled in 75%～125% scope.Again, say closely 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.The rotational speed N of motor 51 is in case decision, and induced voltage EO also just determined because voltage Vi and phase place δ determined, if phase place δ as the data of being scheduled to record in addition, then can be with the method for reading these data control of slowing down.That is to say that the component Vq of voltage Vi will be near the size of induced voltage EO if use the phase place δ that is writing down in advance that inverter is controlled.

Figure 12 is the polar plot of expression from the further state that slows down of state of Figure 11.Different with Figure 11 is that induced voltage EO has diminished.Induced voltage EO is directly proportional with the rotating speed of motor, in case therefore the rotating speed of motor reduces, induced voltage EO has also just diminished certainly.If motor current Im is reduced, the consumption of energy just diminishes, and brake just becomes inoperative.Therefore determine voltage Vi that Im is flowed.

In Figure 11 and Figure 12, utilize the control of phase place δ, make voltage Vq littler than induced voltage EO, then brake weight becomes big,, can slow down rapidly.But electric power returns power supply one side from motor, and just the terminal voltage of the direct current supply of inverter one side (voltage of capacitor C) rises.On the other hand, if make voltage Vq bigger than induced voltage EO, then the rising of above-mentioned DC voltage is suppressed, and brake weight descends.Therefore control phase δ selects the magnitude relationship of induced voltage EO and voltage Vq optimum, can most suitably select the relation of brake weight and generation voltage.

Control phase δ makes the relation of induced voltage EO and voltage Vq, 1. as mentioned above, becomes induced voltage EO and the equal-sized relation of voltage Vq, can control the relation of brake weight and DC voltage with this.And this method needn't worry that under the low state of motor speed above-mentioned DC voltage becomes high voltage more, so 2. the brake weight when strengthening low speed also can be controlled to such an extent that make voltage Vq littler than induced voltage EO.Control phase δ for example, in case make that maximum speed reaches 1000rpm, at least below half 500rpm of maximum speed, or below about 1/3 300rpm, induced voltage EO is bigger slightly than voltage Vq.Be that brake weight is increased for example at ratio (induced voltage EO/ voltage Vq).Also can when rotating at a high speed, adopt control 1., and when low speed, adopt control 2. 1. above-mentioned and 2. made up.

Figure 14 is the flow chart of the action of expression brake control.At step S142, detect the rotor-position and the rotational speed N of motor 51 according to the output of sensor 55.And detect the electric current I m of motor 51 at step S144.At step S146 decision voltage Vi, make this electric current I m unlike top described height.As mentioned above, at step S142 decision voltage Vi, make voltage Vi to be descended during greater than setting that electric current I m makes voltage Vi increase when lower than setting at Im.Then at step S142 decision phase place δ.For example make the q axle component of voltage Vi calculate phase place δ with induced voltage EO equal and opposite in direction (direction vector is opposite).Making voltage Vq and induced voltage EO equal and opposite in direction is a controlled condition, and other conditions are also considered as mentioned above.In order to simplify computing, determine after can reading the value of considering above-mentioned condition in advance.At this moment, parameter can be used for example rotational speed N.According to voltage Vi and phase place δ the pulse of Fig. 7 B is offered inverter at step S150, motor 51 is controlled.

Adopt the foregoing description, can control the generation voltage of controlling from motor on one side to brake weight on one side and make it be no more than dangerous values.As a result, can be controlled at inverter and the withstand voltage of other circuit component on the lower voltage value.Consequently reduce price and improved reliability.

Produce heat and the environment of washing machine absorption heat owing to possess motor, can absorb heat.Therefore can suppress the generation of high direct voltage, improve reliability.Can make the reliability of the washing machine raising of water in imagination again to voltage.

The details drawing of the circuit of the power unit of Figure 15 presentation graphs 6.In case operate the power switch 13 on the guidance panel shown in Figure 1, just form NO terminal and C terminal by attaching plug 1502, fuse 1504, resistance 1508, power switch 13, filtered noise line filter 17e, an input terminal of dc voltage generating circuit 1512, another input terminal of dc voltage generating circuit 1512 (i.e. the 2nd dc voltage generating circuit), the another terminal of above-mentioned line filter, and the loop circuit that constitutes of attaching plug 1502, dc voltage generating circuit 1512 is provided the alternating voltage of civilian power supply.The supply voltage (being 5V in the present embodiment) of the main micro computer 17a of dc voltage generating circuit 1512 outputs.Because from the supply of the supply voltage of dc voltage generating circuit 1512, main micro computer 17a starts working.Main micro computer 17a makes 1520 work of the 1st relay, makes 1522 work of the 2nd relay then, and just it is in on-state respectively.The 1st relay 1520 constitutes and the terminal NO of power switch 13 and the circuit circuit in parallel of terminal C.Again, the 1st relay 1520 and the 2nd relay 1522 form the relation of prime and back level with electric binding with respect to line filter 17e.The 2nd relay 1522 is in the back level of line filter 17e, therefore, even owing to the connection of the 2nd relay 1522 is worked various equipment together, also can suppress noise and make prime one side that it can not entry-line wave filter 17e.

Utilize the operation of power switch 13, terminal NO is connected with the circuit of terminal C, but in a single day the operation of power switch 13 finishes, and terminal C and terminal NC just form connection status, and high level signal just is provided for the input terminal 1548 of main micro computer 17a.Then, if operating power switch 13 terminal NC just are in off-state once more, the input terminal 1548 of main micro computer 17a just becomes low level.State variation according to defeated sub 1548 the input signal of such input.The washing machine power supply is cut off, and at first cuts off the 2nd relay 1522, through postponing, cuts off the 1st relay 1520 more thereafter, and washing machine is shut down.

In the present embodiment,, provide power supply to inverter circuit 29b, dc voltage generating circuit 29a, other operating equipments and driving arrangement (actuator) thereafter because power switch 13 actions at first are main micro computer 17a work.Its reason is, if inverter circuit and dc voltage generating circuit 29a, actuator 21,23,47a inverter driving circuit 29g start working simultaneously with the micro computer of control usefulness, the danger and disaster that produces malfunction just arranged.Again, the inverter circuit of the motor of driving washing machine is with direct voltage drive.This DC voltage charges to capacitor (C that is equivalent to present embodiment), and by this capacitor power supply.The input impedance of this dc voltage generating circuit reduces when power connection, and supply voltage is temporarily descended.The supply voltage that offers main micro computer 17a becomes unstable, might make the start delay of main micro computer 17a.Can prevent the generation of these situations by the connection of postponing the 2nd relay 1522.

When utilizing present embodiment to describe, lead 1532 and 1534 is internal power cords, is connected in the input of the dc voltage generating circuit 29a of Fig. 6.Therefore alternating voltage internally power line 1532 and 1534 offer the rectification circuit DB of dc voltage generating circuit 29a.Operating power switch 13 is connected in attaching plug 1502 with internal power cord 1532, but before 1522 actions of the 2nd relay, internal power cord 1534 is not connected in attaching plug 1502, in case micro computer output 1544 drives the 2nd relay 1522 is connected, just begin internal power cord 1534 is connected in attaching plug 1502 dc voltage generating circuit 29a and inverter circuit 29b, auxiliary micro computer 29h, inverter driving circuit 29g, position detecting circuit 29f, dc voltage control circuit 29c, also has water supply electromagnetic valve 21 in addition, drain solenoid valve 23, the electromagnetic valve 47a of clutch, the locking mechanism of washing machine cover (diagram is omitted) etc. also obtains the power supply supply after 1522 actions of the 2nd relay.Inverter circuit 29b and inverter driving circuit 29g are flowing when power connection to the electric current of chargings such as capacitor.Therefore supply voltage might temporarily reduce and be unstable.It is dangerous providing power supply and control circuit instability to inverter and inverter driving circuit 29g thereof.Therefore, at first make main micro computer 17a operate as normal, and then provide power supply to inverter circuit 29b and inverter driving circuit 29g and other electromagnetic valves.

On internal power cord 1532 and 1534, be connected 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, otherwise can think that also resistance value temporarily descends, and plays a part to make the temporary transient decline of supply voltage.In the present embodiment, the terminal voltage of capacitor C changes because of the operation of washing machine, even but immovable simple PWM control also needs capacitor C at the inverter input side.Therefore preferably after starting working, main micro computer 17a just begins capacitor C is charged.And the action that in a single day makes a mistake of the water supply electromagnetic valve 21 of particularly controlling running water, to supply water to washtub, the cloth amount as shown in Figure 9 and the detection of cloth matter just can not be carried out.Therefore preferably after making main micro computer 17a work, just provide power supply to water supply electromagnetic valve 21.In Fig. 6 or Figure 15,17b, 17c, 17d are TRIAC (triac), according to the signalizing activity of the output 1546 of main micro computer 17a.

Also have, on DC voltage (the being 5V in the present embodiment) feeding terminal of dc voltage generating circuit 1512, capacitor 1516 is set, even after main micro computer 17a work since the 2nd relay 1522 move, supply voltage temporary transient reduction owing to above-mentioned reason, confusion can not take place in the work of main micro computer 17a yet.

Setting about work from main micro computer 17a plays the delay till the supply power supplys such as described actuator 21,23,47c and dc voltage generating circuit 29a to be more than 50 milliseconds, preferably to postpone about 100 milliseconds as far as possible or more time.

Again, make with operating power switch 13 under the situation of washing machine end of run, cutting off the 2nd relay 1522 back cut-outs the 1st relay 1520.Even also preferably after the voltage of capacitor C reduces, cut off the 1st relay 1520 under these circumstances.The DC voltage that each actuator and inverter driving circuit are supplied with is 15V, is reduced to about 25V and also can works even supply with the DC power supply circuit input voltage of this 15V.Therefore cutting off the 1st relay 1520 after for example the voltage of capacitor C is reduced to about 25V again can be safer.

Dc voltage generating circuit 1512 has the 1st lead-out terminal of the supply voltage that main micro computer 17a is provided, and the 2nd lead-out terminal 1518 of relay power is provided in addition in addition, provides power supply from this terminal to the 1st relay 1520 and the 2nd relay 1522.

On the main micro computer 17a power supply terminal 1524 is set.The 5V power output terminal 1624 of the supply voltage generation circuit 1604 from the 2nd supply voltage generation circuit 1602 and 1604 is as shown in figure 16 supplied with the supply voltage that main micro computer 17a uses to this power supply terminal 1524.

The action as described below of the circuit of Figure 16.The supply voltage that offers inverter circuit 29b as the output of dc voltage generating circuit 29a offers capacitor 1614 by diode 1612.The voltage of capacitor 1614 uses 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 to be connected in parallel with capacitor 1614, but series connection with it connects.The The noise also passable though be connected in parallel, that the more difficult switch motion that is subjected to inverter circuit 29b causes when being connected in series.That is to say the 15V voltage that actuator work is used as the 1st grade that is connected in series supply voltage generation circuit 1602.The power supply (power supply of 5V) that 1604 outputs of supply voltage generation circuit are used the digital circuit work of micro computer 17a and 29h etc.

Washing machine possesses the washtub that washing clothes is used in the above-described embodiments, be arranged at freely the stirring wing wheel of to rotate of washtub inside, and the motor that makes described stirring wing wheel rotation usefulness, implement washing procedure and rinsing process, this washing machine possesses the dc voltage generating circuit that ac voltage rectifier is produced DC voltage, acceptance is from the DC voltage of described dc voltage generating circuit, the inverter circuit that described motor is powered, and the control circuit that described inverter circuit is controlled, described control circuit has micro computer, and possess and be used for connecting, cut off the console switch of washing machine power supply, utilization is to the operation of described console switch, at first make described micro computer enter duty, utilize the work of described micro computer to provide power supply to described dc voltage generating circuit and described inverter circuit, constitute washing machine like this, the reliability of washing machine is improved.In above-mentioned washing machine,, the reliability of washing machine is further improved with this after described micro computer provides supply voltage, postponing to provide power supply to described dc voltage generating circuit and described inverter circuit again more than 50 milliseconds.

Washing machine possesses the washtub that washing clothes is used in the above-described embodiments, be arranged at freely the stirring wing wheel of to rotate of washtub inside, and the motor that makes described stirring wing wheel rotation usefulness, implement washing procedure and rinsing process, this washing machine possesses the dc voltage generating circuit that ac voltage rectifier is produced DC voltage, acceptance is from the DC voltage of described dc voltage generating circuit, the inverter circuit that described motor is powered, the control circuit that washing machine is controlled, and the inverter driving circuit that drives described inverter circuit, described control circuit has micro computer and the power circuit of power supply is provided to this micro computer.Again, possess and be used for connecting, cut off the console switch of washing machine power supply, and possesses the plug of described washing machine, switch on or off the 1st relay from a side of the power line of described plug, switch on or off the 2nd relay from the opposing party of the power line of described socket, back level at described the 1st relay and the 2nd relay is connected described dc voltage generating circuit, and the power circuit that power supply is provided in described inverter driving circuit connection, operate described console switch, at first connect the 1st relay, make the power circuit work of described micro computer, action by means of described micro computer connects described the 2nd relay then, make the power circuit work that power supply is provided to described dc voltage generating circuit and described inverter circuit, owing to adopt such structure, the reliability of washing machine be improved.In described washing machine, when cutting off the washing machine power supply according to the operation of described console switch, at first utilize the action of described micro computer to make described the 2nd relay be in off-state, make the 1st relay be in off-state then, owing to adopt such structure, the reliability of washing machine be further enhanced.

In Figure 16,, make supply voltage generation circuit 1602 and 1604 work according to voltage from capacitor C as the supply voltage that provides to inverter circuit 29b.Therefore even take place at work under the state that the situation motor 51 of civilian power cut-off still rotating, micro computer 17a and 29h correctly work, and testing circuit (comprising various sensors) continuous firings such as inverter driving circuit 29g and position detecting circuit 29f, can guarantee safety.

The situation of so-called civilian power cut-off has the situation that for example child pulls out plug when selecting.When washing machine washs and such power cut-off thereby out of contior situation takes place is breakneck when dehydration.As the example of a danger, power cut-off can not be controlled when dehydrating operation was arranged, so the situation that exists the dehydration barrel in the rotation at a high speed how can not stop.In the present embodiment, the induced voltage that utilization causes the motor rotation returns the method for power supply one side by inverter circuit 29b, with this this voltage is offered supply voltage generation circuit 1602 and 1604, provide power supply, can keep control to the circuit that needs power supply that comprises control circuit.Illustrated in the explanation here that the induced voltage that the rotation that utilizes motor causes returns the method for mains side by inverter circuit 29b, but it is desirable returning mains side from motor.Even do not return, because the energy consumption of capacitor C is suppressed, can utilize the energy of this capacitor C storage, even washing machine also can be kept control behind the civilian power cut-off, can improve security performance.Again, if the switching to the lid of washing machine is controlled, not only can make washing machine keep state of a control and be reduced to lower-speed state, and can control the switching of dehydration bung up to the rotary speed of motor 51, that is to say to make it keep closed condition, keep safety.

Corresponding workflow when Figure 17 represents that the power supply of civilian power supply stops.Step 801～805 illustrated at Fig. 8, not in repeat specification.Dehydration barrel is rotated at a high speed in rinsing operation or dehydrating operation.The state that must stop the power supply supply of washing machine under this state is controlled.Micro computer 29h (auxiliary micro computer) monitors that in the cut-out of step 1702 pair washing machine power supply supply execution in step 1704 during cut-out.Detect the voltage of the capacitor C of Fig. 6, detect the rotary speed of motor 51 in step 1706.Brake in step 1710 according to these testing results.Under the situation that motor almost stops, detecting this situation in step 1708, stop control operation.The brake control of step 1710 is identical with the situation of using Figure 11 and Figure 12 explanation.

Adopt present embodiment, as shown in Figure 6, control device is made of main control unit 17 and sub controlling unit 29.Sub controlling unit 29 has auxiliary micro computer, is the control computer 29h of dc voltage generating circuit 29a and inverter circuit 29b.On electric, make the control of motor 51 brakes just possible as long as micro computer 29h keeps work.Therefore the supply voltage generation circuit 1602 and 1604 of Figure 16 provides supply voltage to micro computer 29h and inverter driving circuit at least.

Figure 18 is the detailed circuit diagram of the dc voltage generating circuit 29a of Fig. 6.Capacitor C is made of 2 series capacitors 1802 and 1804, and is arranged in parallel resistance 1812 and 1814 respectively with this capacitor 1802 and 1804.This capacitor 1802 and 1804 is connected in series, reduces requirement of withstand voltage each capacitor with this.In order to make the voltage that is added in each capacitor 1802 and 1804 average as far as possible, series resistance 1812 and 1814 are set again.

Control of Voltage resistance 29e takes such structure, promptly the charging voltage as the terminal voltage of capacitor 1802 and 1804 is measured at the dividing point Q of resistance 1822 and 1824, low then dc voltage control circuit 29c prolongs charging interval of reactor L (Fig. 6) if this voltage VQ is than reference voltage, can quantitative change big when switch element S1 cuts off.When the resistance value of dividing point Q is descended then the voltage VQ of dividing point descend, the charging interval of reactor L prolongs, capacitor 1802 and 1804 charging voltage rising.Therefore, if the resistance value of dividing point Q is controlled with micro computer 29h, then can control capacitor 1802 and 1804 charging voltage, can control supply voltage to inverter circuit 29b.

At dividing point Q be connected in series 5 resistance 1826 and 1 resistance 1828, these 6 resistance connect resistance 1828 respectively on each tie point.The present embodiment explanation increases same structure and just can carry out with 6 situations about controlling in the time of 8.Make lead-out terminal D0～D5 of micro computer 29h be height (H) level, then the resistance value of dividing point Q is the highest, and at this moment capacitor 1802 and 1804 charging voltage are minimum.As benchmark low-voltage VQO, making lead-out terminal D5 is low (L) level with at this moment voltage, and then voltage VD5 rises.In the present embodiment, as the explanation of carrying out among Fig. 6, VQO is set at 140V～170V with the benchmark low-voltage.More particularly, be set at 155V.Making voltage VD5 again is 80V.Therefore if making lead-out terminal D5 is low (L) level, then capacitor 1802 and 1804 charging voltage are 155V+80V, are 235V.If make lead-out terminal D4 be in low (L) level, up voltage VD4 on capacitor 1802 and 1804 the voltage then.Voltage VD4 is half of voltage VD5, in the present embodiment, is 40V.Make same lead-out terminal D3～lead-out terminal DO be in low (L) level respectively, then capacitor 1802 and 1804 terminal voltage only rise as shown in figure 19 voltage VD3 to the voltage of voltage VDO.Therefore if make lead-out terminal D5～lead-out terminal D0 all be in low level, then capacitor 1802 and 1804 terminal voltage are (155+80+40+20+10+5+2.5=) 302.5V.Adopt method recited above, can correctly control voltage between ceiling voltage (being 302.5V in the present embodiment) and the benchmark low-voltage VQO (being 155V in the present embodiment) with computer 29h.

Below the main control unit 17 of Fig. 6 and the configuration of sub controlling unit 29 are illustrated.Figure 20 represents the configuration of main control unit 17 and sub controlling unit 29.Main control unit 17 is arranged at the next door of the top clothing dispensing port 9a of washtub 2.Sub controlling unit 29 is positioned at below the motor that is arranged on below the washtub.This is because want dc voltage generating circuit 29a that produces noise or inverter circuit 29 to be disposed near motor 51 as far as possible.Want to make and high-tension dc voltage generating circuit 29a takes place near motor 51 configurations.And want to make high voltage generating circuit away from operation board.

Civilian supply voltage is introduced main control unit 17 with mains cord 2002 from plug 1502.Main control unit 17 is provided with line filter 17e, the 1st and the 2nd relay 1520 and 1522, power circuit 1512, and main micro computer 17a etc.In the 1st control device 17 (main control unit 17), be provided with the circuit of the 2nd control device 29 (sub controlling unit 29) of Fig. 6.

Figure 21 removes the washtub of washing machine and the motor of below thereof etc., the figure that looks down from the top.The below of a side of washing machine is installed with the 2nd control device 29.Its position is under motor.Figure 22 removes the figure that the washing machine base plate looks up from the below conversely.The 2nd control device 29 is installed on the mount pad 2202.The 2nd control device 29 has fin 2204, and fin 2204 is arranged at the 2nd control device 29 downsides.The reason that fin 2204 is arranged at downside is that washing machine uses water conservancy project to do, and is arranged at the place of many water.Therefore considering around the 2nd control device 29 has water, wants to make these water to fall rapidly.And after worrying fin is set, the water that falls into fin is not easy to remove.

Figure 23 is the vertical view of the 2nd control device 29.Figure 24 is its side view.The opposition side of Figure 23, fin 2204 is set below promptly.Figure 23 and Figure 24 correctly express its size relationship, take the rectangle that is easy to accommodate.Again, can waterproof in order to make distribution, but 4 kinds of distributions are made a branch of wire harness of in-out apparatus 29 shells as 2302.Include in the distribution 2302 from the power line 2304 of the 100V of the 1st control device 17 and the order wire 2306 of control usefulness.The winding of oriented again motor 51 provide voltage 2308 with the wiring 2310 that is connected with Hall element 55.

Figure 25 A represents the side of the shell upper of the 2nd control device 29, and Figure 25 B represents to remove the circuit substrate of the inside of shell upper.The both sides of substrate are provided with the switch element S1 of inverter 29b and dc voltage generating circuit 29a respectively.With the fin of switch element S1 side by side, the capacitor 1812 and 1814 that constitutes capacitor C is set

Adopt the structure of the invention described above, the washing machine of high security can be provided.

Claims (1)

1. washing machine, possess the washtub that is used for washing clothes, at the inner rotatable stirring wing wheel of configuration freely of described washtub, and the motor that is used to drive described stirring wing wheel and the rotation of above-mentioned washtub, carry out washing procedure, rinsing process and dehydration procedure, it is characterized in that also possessing:

The 1st dc voltage generating circuit with ac voltage rectifier, generation DC voltage; Acceptance is from the DC voltage of described the 1st dc voltage generating circuit, to the inverter circuit of described motor power supply; The 1st control device that the microcomputer of the operation of controlling described washing machine is arranged; And the 2nd control device of controlling described inverter circuit;

On above-mentioned the 1st control device,, DC voltage supplies with the 2nd dc voltage generating circuit of the power supply of above-mentioned microcomputer as taking place; Alternating voltage is supplied to the circuit arrangement of above-mentioned the 2nd dc voltage generating circuit by the operation of power switch; Switch to the inverter of connection status by above-mentioned microcomputer; Become continuous state by above-mentioned inverter, be connected the internal power cord on the alternating voltage;

Described the 1st control device is disposed at above-mentioned washtub top, and described the 2nd control device, described the 1st dc voltage generating circuit and described inverter circuit are disposed at described washtub below, above-mentioned the 1st dc voltage generating circuit is connected on the above-mentioned internal power cord, operation by power switch, accept the supply of the DC voltage that takes place on above-mentioned the 2nd dc voltage generating circuit, after starting above-mentioned microcomputer, alternating voltage is supplied to above-mentioned the 1st dc voltage generating circuit.

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