CN100414028C - Control device of brushless D.C. motor for fully-automatic washing machine and control method thereof - Google Patents
Control device of brushless D.C. motor for fully-automatic washing machine and control method thereof Download PDFInfo
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- CN100414028C CN100414028C CNB021565481A CN02156548A CN100414028C CN 100414028 C CN100414028 C CN 100414028C CN B021565481 A CNB021565481 A CN B021565481A CN 02156548 A CN02156548 A CN 02156548A CN 100414028 C CN100414028 C CN 100414028C
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Abstract
The present invention provides a full automatic washing machine. The present invention comprises a brushless DC motor, a washing shaft, a dewatering shaft and a movable connector, wherein the brushless DC motor is composed of a stator and a rotor; the washing shaft is combined with the rotor of the motor; the dewatering shaft is arranged outside the washing shaft; the movable connector moves vertically along the dewatering shaft; the control device and the control method of the brushless DC motor comprise a cylindrical coil, a thermal electricity protector and hall sensors, wherein the cylindrical coil acts on an electromagnet to attract the movable connector along with the supply of a power source; the thermal electricity protector is connected with the coil of the cylindrical coil, and when the temperature of the coil of the cylindrical coil rises excessively, the thermal electricity protector cuts down the power source supplied for the coil so as to protect the cylindrical coil; a plurality of hall sensors are connected with the thermal electricity protector and obtain the supply of the power source through the thermal electricity protector. The hall sensors are used for sensing the rotation speed and the rotation direction of the motor.
Description
Technical field
The present invention relates to a kind of clutch apparatus of automatic washing machine; the control device for brushless direct current machine that relates in particular to a kind of automatic washing machine that can bring following effect with and control method (DEVICE FOR CONTROLLING BLDC MOTOR IN AUTOMATION-TYPEWASHING MACHINE): when the thermoelectric protector that excessively rises at the coil temperature that is used to prevent solenoid coil is carried out work; cut off the power supply that is connected the Hall element on the above-mentioned thermoelectric protector simultaneously, stop the driving of motor.
Background technology
General washing machine utilizes the rubbing action of the current that the rotation of the soft effect of washing agent and washing fin produces and removes attached to the polluter on clothes, the bed clothes to the percussion that washings appends by agitator.Amount and the kind of above-mentioned washing machine by the sensor senses washings, the automatic setting washing methods washs, or washs by the control of computer after according to the amount of washings and kind washings being fed to suitable water level.
In addition, the automatic washing machine of prior art has following type of drive: transmit by means of power and send the rotary power of drive motors to wash shaft with conveyer belt (belt) and pulley (pulley) agitator is rotated, and send the mode that dehydrating shaft is rotated drench pit to; Perhaps control the mode that is rotated with different speed when making drench pit carry out washing stroke and dehydration stroke by speed to brushless direct-current (BLDC) motor.
On the one hand, the structure that has the automatic washing machine of following mode of washing in addition: utilize brshless DC motor, but the path difference that power transmits, that is to say, agitator by low speed rotation when washing is carried out washing stroke, agitator and drench pit is rotated at a high speed carry out the dehydration stroke.
Below with reference to Fig. 1, to utilizing brshless DC motor, but structure and the effect that power transmission path carries out the washing machine clutch devices of different controls briefly explained.
Fig. 1 demonstrates the major part profilograph of existing technology clutch.
As shown in Figure 1, aqua storage tank (do not have in the accompanying drawing show) is arranged on the inside of washing machine body, is fixed with bearing shell 30 below the above-mentioned aqua storage tank, and above-mentioned bearing shell 30 is provided with bearing 32, and above-mentioned bearing 32 supports dehydrating shafts 70.
In addition, the bottom of above-mentioned bearing shell 30 is provided with the stator 40 that constitutes the drive source that drives washing machine, is wound with stator coil 42 on the periphery of said stator 40.
At this moment, with said stator 40 rotor 50 is set accordingly.Above-mentioned rotor 50 and above-mentioned wash shaft 60 combine, and above-mentioned rotor 50 interacts by the electro permanent magnetic with said stator 40 and is rotated.
On the one hand, above-mentioned rotor 50 is provided with rotor yoke (yoke) 52, and above-mentioned rotor yoke 52 is provided with the magnet 53 that keeps a determining deviation with said stator 40.In order to form magnetic flux path, above-mentioned rotor yoke 52 is formed by metal material.
In addition, the central authorities of above-mentioned rotor yoke 52 are provided with rotor axle sleeve 56, and above-mentioned rotor axle sleeve 56 forms as one by plug-in module (insert mould) and driving mouth 58.Above-mentioned rotor axle sleeve 56 plays insulating effect between above-mentioned rotor yoke 52 and wash shaft 60.
In order to link above-mentioned rotor axle sleeve 56 and above-mentioned rotor yoke 52, be provided with a plurality of installation projections 560.Above-mentioned installation projection 560 connects to be inserted in the installing hole 54 that is formed on the above-mentioned rotor yoke 52, under above-mentioned state, fixes by 57 pairs of above-mentioned rotor yokes 52 of fixed screw and rotor axle sleeve 56.
The upper end outer peripheral face of above-mentioned driving mouth 58 is provided with serration 580, and above-mentioned serration 580 and movable connector 80 engagements are accepted the power that rotor 50 transmits.
At this moment, above-mentioned serration 580 is not formed into the top of the upper end of above-mentioned driving mouth 58, and there is the part that does not form above-mentioned serration in the top, upper end of above-mentioned driving mouth 58.For convenience's sake, above-mentioned interval is called anodontia interval.
In addition, the inner peripheral surface of above-mentioned driving mouth 58 is provided with serration 590, above-mentioned serration 590 by with the engagement that is arranged on the serration 620 on above-mentioned wash shaft 60 outer peripheral faces, send the power of above-mentioned rotor 50 to above-mentioned wash shaft 60.The central authorities that connect above-mentioned driving mouth 58 insert engagement between the above-mentioned serration 590 be supported on above-mentioned wash shaft 60 lower ends and the serration 620, thereby transmit power.
In addition, above-mentioned wash shaft 60 connects inside outstanding form of the center of above-mentioned dehydrating shaft 70 to above-mentioned sink (not having in the accompanying drawing to show), and the front end of above-mentioned sink 60 has the washing fin.In addition, the above-mentioned wash shaft 60 of above-mentioned dehydrating shaft 70 and perforation dehydrating shaft 70 is concentric.
Above-mentioned dehydrating shaft 70 and sink are connected above-mentioned sink are rotated.
On the one hand, the upper end adjacency of the lower end of above-mentioned dehydrating shaft 70 and above-mentioned driving mouth 58, the lower end of above-mentioned dehydrating shaft 70 is provided with serration 720.
In addition, be provided with the movable connector 80 that the driving force of above-mentioned rotor 50 is transmitted to above-mentioned dehydrating shaft 70 selectively along with the moving of the serration 580 of the serration 720 of above-mentioned dehydrating shaft 70 and above-mentioned driving mouth 58.
Above-mentioned movable connector 80 integral body constitute with drum, because by the above-mentioned bearing 32 of spring 800 resiliency supported, so above-mentioned movable connector 80 is supported along the serration 720 intermeshing directions of the serration 580 of above-mentioned driving mouth 58 and dehydrating shaft 70.
On the one hand, be provided with drive unit solenoid coil 90 below the above-mentioned bearing shell 30, above-mentioned solenoid coil 90 is used to drive above-mentioned movable connector 80.
Fig. 2 demonstrates the profilograph of the solenoid coil structure of Fig. 1 briefly.
As shown in Figure 2, above-mentioned solenoid coil 90 includes following structure: bobbin 1, coil 2 and encapsulant 3.Above-mentioned bobbin 1 probably has drum, is formed with upper flange dish 100 and lower flange dish 101 respectively along the position that direction of principal axis is separated from each other; Above-mentioned coil 2 is wrapped on the outside of the bobbin 1 between above-mentioned upper flange dish 100 and the lower flange dish 101; For above-mentioned coil 2 is not exposed, the above-mentioned encapsulant 3 that is formed by nonflammable material is enclosed in the outside of above-mentioned coil 2.
At this moment, the encapsulant 3 that surrounds above-mentioned coil 2 surrounds the upper flange dish 100 of above-mentioned coil 2 and above-mentioned bobbin 1 and the marginal position of lower flange dish 101.
So, applying power supply to above-mentioned solenoid coil 90, the elastic force that the suction by solenoid coil makes above-mentioned movable connector 80 overcome above-mentioned spring 800 moves to top, removes above-mentioned movable connector 80 and above-mentioned driving mouth 58 engagement each other.At this moment, only transmit power, only allow the interior agitator of sink (not showing in the accompanying drawing) be rotated to above-mentioned wash shaft 60.
In addition, the upper end of above-mentioned solenoid coil 90 has the first yoke shape plate (yoke plate) 92, and the lower end of above-mentioned solenoid coil 90 has the second yoke shape plate 94.On the one hand, be provided with jog 95 below the above-mentioned yoke shape plate 294, above-mentioned jog 95 minutes and the jog that is formed on the fixed flange 82 of above-mentioned movable connector 80 are fixed.
In addition, the inboard, bottom of above-mentioned dehydrating shaft 70 is provided with ball bearing 20, and the effect of above-mentioned ball bearing 20 is: above-mentioned wash shaft 60 supports the bottom of above-mentioned wash shaft when being rotated.
On the one hand, stator 40 sides of clutch have Hall element ha, hb, and above-mentioned Hall element ha, the effect of hb is: the positional information to each phase of the rotor 50 of motor detects.
So, will be by above-mentioned Hall element ha, the positional information of the rotor 50 that hb detects inputs to microcomputer (microcomputer) 600, after above-mentioned microcomputer 600 is judged the rotary speed of motor 300, the target velocity of rotary speed after judging and the program (program) that configured is compared, according to comparative result according to time (timing) signal U+, V+, W+, U-, V-, W-controls, and motor is rotated with target velocity.
Fig. 3 demonstrates the detailed circuit structure chart of the brshless DC motor 300 of existing technology.
As shown in Figure 3, the circuit of above-mentioned brshless DC motor 300 is made of 6 triodes (transistor), and above-mentioned triode obtains conducting control by the specific control signal of the above-mentioned microcomputer 600 of interface (interface) reception according to above-mentioned signal.The motor control assembly of prior art includes following structure: drive unit 200, stator 40 and rotor 50.Above-mentioned drive unit 200 is made of converter (inverter), and above-mentioned drive unit 200 is connected above-mentioned 6 triodes respectively in two a pair of modes; Said stator 40 obtains the three phase mains of conversion along with the conversion of above-mentioned drive unit 200 (switching); Above-mentioned rotor 50 carries out work by the rotating excitation field of said stator 40.
Below with reference to Fig. 3, the work of prior art motor control assembly is described.
At first, above-mentioned brshless DC motor 300 is different with induction machine, and it utilizes permanent magnet to replace brush in brush (brush) motor, by Hall element ha, the rotation of hb is the n of perception permanent magnet all the time, and the position of the s utmost point imposes on above-mentioned microcomputer 600 with the signal of perception.
So, after above-mentioned microcomputer 600 is judged the rotary speed of motor 300 according to the said sensed signal that receives, the target velocity of rotary speed of judging and the program that has configured is compared, according to comparative result according to time signal U+, V+, W+, U-, V-, W-control motor 300 are rotated with target velocity.
That is to say that with above-mentioned Hall element ha, the pulse of the combination results of hb (pulse) waveform is sent to drive unit 200, can switch each phase triode respectively, can control, form the driving of motor from supply unit 400 each power supply of supplying mutually to motor.
In addition, above-mentioned Hall element ha, hb are by the n of permanent magnet, and the change in location of the s utmost point also can detect the direction of rotation of rotor 50.
On the one hand; be useful on the solenoid coil 90 on the clutch of said structure and have thermoelectric protector (thermo protector) 4; above-mentioned thermoelectric protector 4 is to produce the excessive power supply that cuts off when hot to the coil supply on coil 2, prevents the device that the excessive temperature of coil rises.
At this moment, above-mentioned thermoelectric protector 4 inserted to be fixed on thermoelectric protector fixing with between timber 5 and the upper flange dish 100, the fixing prolongation to radial direction in coil 1 upper end with timber 5 forms above-mentioned thermoelectric protector.
But the clutch apparatus of prior art has following shortcoming:
Fig. 4 demonstrates the Hall element drive circuit figure of existing technology.Fig. 5 demonstrates the solenoid coil drive circuit figure of existing technology.
As Fig. 4 and shown in Figure 5, in the clutch apparatus of prior art, the circuit that is configured for driving the circuit of Hall element respectively individually and is used to drive solenoid coil.The above-mentioned circuit that is used to drive Hall element is used for the rotary speed and the direction of rotation of perception motor; The above-mentioned circuit that is used to drive solenoid coil is by attracting movable connector 80 and retrain or discharging.
That is to say that the circuit that is used to drive Hall element is provided with the Hall element ha of the supply of electric power that obtains power supply respectively, hb.The circuit that is used to drive solenoid coil comprises coil 2 and thermoelectric protector 4; The supply that above-mentioned coil 2 obtains power supply plays electromagnet; The thermal conductance that produces on above-mentioned coil causes temperature and reaches certain value when above, and above-mentioned thermoelectric protector 4 is cut off to above-mentioned coil 2 supply power supplys.In the prior art, control the above-mentioned circuit of driving solenoid coil that is used to drive the circuit of Hall element and is used to retrain or discharges the movable connector 80 of attraction respectively individually by microcomputer 600.
So,, make the suction forfeiture of the solenoid coil 90 on the movable connector 80 by the work of thermoelectric protector 4, but can produce following problem because of rotor 50 continues rotation at a high speed even the excessive temperature because of the coil of solenoid coil 90 rises in when dehydration.
That is to say; excessive temperature because of coil when dehydration rises, and by the work of thermoelectric protector 4, cuts off the power supply that applies to coil 2; make suction forfeiture, above-mentioned movable connector 80 is descended by the restoring force of spring 800 for the solenoid coil 90 on the movable connector 80.At this moment, owing to obtain the Hall element ha of power supply supply from power supply 400 by independent drive circuit, hb is still in work, continuing to apply power supply to motor makes at movable connector 80 that rotor 50 descends under the state of rotation at a high speed with at a high speed in the engagement process of the driving mouth 58 of rotation, cause above-mentioned movable connector 80 and drive on mouthfuls 58 the serration producing very big load, produce problems such as serration is damaged.
Summary of the invention
In order to solve the problem that prior art exists; the control device for brushless direct current machine that the invention provides the automatic washing machine that can bring following effect with and control method: by improving the structure of the solenoid coil that constitutes the washing machine clutch device; because when the thermoelectric protector that excessively rises at the coil temperature that is used to prevent solenoid coil is carried out work; cut off the power supply that is connected the Hall element on the above-mentioned thermoelectric protector simultaneously; stop the driving of motor, so can prevent that the serration that constitutes the movable connector of clutch apparatus and drive mouth is damaged etc.
In order to realize purpose of the present invention; the control device for brushless direct current machine of automatic washing machine; automatic washing machine comprises brshless DC motor; wash shaft; dehydrating shaft and movable connector; brshless DC motor is made of stator and rotor; rotor is provided with rotor yoke; rotor yoke is provided with the magnet that keeps a determining deviation with stator; rotor yoke is formed by metal material; the central authorities of rotor yoke are provided with rotor axle sleeve; rotor axle sleeve becomes one by the plug-in module and the driving degree of lip-rounding; the upper end outer peripheral face that drives mouth is provided with serration; serration and movable connector engagement; accept the power that rotor transmits; wash shaft is combined on the rotor of motor; when rotating, rotor is rotated together; the inner peripheral surface that drives mouth is provided with serration; serration by with the engagement that is arranged on the serration on the wash shaft outer peripheral face; send the power of rotor to wash shaft; dehydrating shaft is arranged on the outside of wash shaft; the upper end adjacency of the lower end of dehydrating shaft and driving mouth; the lower end of dehydrating shaft is provided with serration; movable connector moves up and down along dehydrating shaft; only send the driving force of motor to wash shaft; perhaps send wash shaft and dehydrating shaft simultaneously to; along with the serration of dehydrating shaft and moving of the serration that drives mouth; movable connector transmits the driving force of rotor selectively to dehydrating shaft; drive unit is connected between power supply and the brshless DC motor; each is to parallel connection drive unit is connected 6 triodes respectively in two a pair of modes after; the emitter stage of a triode is connected on the colelctor electrode of another triode in the every pair of triode group; also connect with the interface of a phase place of brshless DC motor respectively simultaneously; the base stage of each triode is connected microcomputer respectively with by interface; after microcomputer is judged the rotary speed of motor; the target velocity of rotary speed after judging and the program that configured is compared; control according to time signal according to comparative result; motor is rotated with target velocity; the control device for brushless direct current machine of this automatic washing machine comprises solenoid coil; thermoelectric protector and Hall element; supply along with power supply; solenoid coil plays the effect of electromagnet; attract movable connector; thermoelectric protector is attached on the coil of solenoid coil; when thermoelectric protector rises in the excessive temperature of the coil of solenoid coil; cut-out is to the power supply of coil supply; the guard circle solenoid; each end of a plurality of Hall elements is attached at the centre of thermoelectric protector; obtain the supply of power supply by thermoelectric protector, Hall element is used for the rotary speed and the direction of rotation of perception motor.
In order to realize purpose of the present invention; the control method for brushless direct current motor of above-mentioned automatic washing machine comprises: make thermoelectric protector carry out work when the coil temperature of solenoid coil excessively rises; cut-out is to the power supply of coil supply; meanwhile; cut-out is supplied to the stage of power supply on the Hall element that is attached on the thermoelectric protector; when cut-out is supplied to power supply on the Hall element; detect the stage of this process by microcomputer; microcomputer cuts off the power supply to the motor supply, stops the stage of motor.
The control device for brushless direct current machine of automatic washing machine provided by the invention with and control method can bring following effect.
As mentioned above; in the present invention; by improving the structure of the solenoid coil that constitutes the washing machine clutch device; when the thermoelectric protector that excessively rises at the coil temperature that is used to prevent solenoid coil is carried out work; cut off the power supply that is connected the Hall element on the above-mentioned thermoelectric protector simultaneously, stop the driving of motor.
So, by the present invention, can prevent phenomenons such as the serration that constitutes the movable connector of washing machine clutch device and drive mouth is damaged, improved the reliability and the inner structure of product.
Description of drawings
Fig. 1 demonstrates the profilograph of the clutch of existing technology automatic washing machine;
Fig. 2 demonstrates the profilograph of the solenoid coil structure of Fig. 1;
Fig. 3 demonstrates the circuit structure diagram of the control device for brushless direct current machine of existing technology;
Fig. 4 demonstrates the Hall element drive circuit figure of existing technology;
Fig. 5 demonstrates the solenoid coil drive circuit figure of existing technology;
Fig. 6 is a circuit structure diagram of the present invention, demonstrates the Hall element that utilizes thermoelectric protector control brshless DC motor and the driving circuit structure figure of solenoid coil.
The critical piece description of reference numerals
1: bobbin (bobbin) 100: upper flange dish (flange)
101: lower flange dish 2: coil (coil)
3: encapsulant (mou1d) 4: thermoelectric protector
5: thermoelectric protector is fixing with timber (rib)
90: solenoid coil ha, hb: Hall element
The specific embodiment
Below with reference to back accompanying drawing 6, embodiments of the invention are elaborated.
Fig. 6 is a circuit structure diagram of the present invention, demonstrates the Hall element that utilizes thermoelectric protector control brshless DC motor and the driving circuit structure figure of solenoid coil.
As shown in Figure 6, automatic washing machine includes following structure: brshless DC motor, wash shaft 60, dehydrating shaft 70, movable connector 80.Above-mentioned brshless DC motor is made of stator 40 and rotor 50; Above-mentioned wash shaft 60 is combined on the rotor 50 of above-mentioned motor, therewith is rotated when above-mentioned rotor 50 rotates; Above-mentioned dehydrating shaft 70 is arranged on the outside of above-mentioned wash shaft 60; Above-mentioned movable connector 80 moves up and down along above-mentioned dehydrating shaft 70, only sends the driving force of above-mentioned motor to above-mentioned wash shaft 60, perhaps sends above-mentioned wash shaft 60 and dehydrating shaft 70 simultaneously to.For above-mentioned automatic washing machine, its brshless DC motor comprises: solenoid coil 90, thermoelectric protector 4 and Hall element ha, hb.Along with the supply of power supply, above-mentioned solenoid coil 90 plays the effect of electromagnet, attracts above-mentioned movable connector 80; Above-mentioned thermoelectric protector 4 is attached on the coil 2 of above-mentioned solenoid coil 90, when above-mentioned thermoelectric protector 4 rises in the excessive temperature of the coil of above-mentioned solenoid coil 90, cuts off the power supply to above-mentioned coil 2 supplies, guard circle solenoid 90; A plurality of above-mentioned Hall element ha, hb are attached on the above-mentioned thermoelectric protector 4, obtain the supply of power supply by above-mentioned thermoelectric protector 4, and above-mentioned Hall element ha, hb are used for the rotary speed and the direction of rotation of the above-mentioned motor of perception.
Below, the effect of the control device for brushless direct current machine of automatic washing machine of the present invention with said structure is elaborated.
In dehydration is carried out, when the coil temperature of above-mentioned solenoid coil 90 excessively rises, make the thermoelectric protector 4 on the coil 2 that is attached at above-mentioned solenoid coil 90 carry out work, cut off power supply to above-mentioned coil 2 supplies.
That is to say; in above-mentioned solenoid coil 90; because the upper flange dish 100 of above-mentioned bobbin 1 is provided with the thermoelectric protector (tp:thermoprotector) 4 of the excessive temperature rising that prevents coil 2; when above-mentioned coil 2 produces undue heat; make above-mentioned thermoelectric protector 4 carry out work; cut-out is to the electric current of coil 2 supplies, so can protect above-mentioned coil 2.
On the one hand, structure in a circuit according to the invention by the work of above-mentioned thermoelectric protector 4, is cut off when electric current that coil 2 applies, is supplied to the Hall element ha that is attached on the above-mentioned thermoelectric protector 4, and the electric current of hb also is cut off.
In addition, cut off to be supplied to above-mentioned Hall element ha, during electric current on the hb, transmit signals to microcomputer 600, the power supply to the motor supply is cut off in control on above-mentioned microcomputer 600, stops the work of motor.
So; when rising because of the excessive temperature of the coil of above-mentioned solenoid coil 90 in when dehydration; work by above-mentioned thermoelectric protector 4; make suction forfeiture for the solenoid coil 90 on the movable connector 80; when the restoring force that makes above-mentioned movable connector 80 pass through spring 800 descends; owing to cut off to above-mentioned Hall element ha; the power supply that hb applies; stopped the work of motor; so the engagement that can make above-mentioned movable connector 80 and drive between the mouth 58 is carried out naturally, can eliminate the impaired phenomenon of serration of above-mentioned movable connector 80 and driving mouth 58.
Generally speaking; in the present invention; utilization is arranged on solenoid coil and drives with the thermoelectric protector on the circuit 4; when on above-mentioned solenoid coil drives with circuit, producing the heat more than the certain value; above-mentioned thermoelectric protector 4 is carried out work, meanwhile, stops Hall element and drives the work of using circuit; stop the work of motor, so can prevent the damage of above-mentioned movable connector 80 and driving mouth 58.
Claims (2)
1. the control device for brushless direct current machine of an automatic washing machine; described automatic washing machine comprises brshless DC motor; wash shaft; dehydrating shaft; movable connector; brshless DC motor is made of stator and rotor; rotor is provided with rotor yoke; rotor yoke is provided with the magnet that keeps a determining deviation with stator; rotor yoke is formed by metal material; the central authorities of rotor yoke are provided with rotor axle sleeve; rotor axle sleeve becomes one by the plug-in module and the driving degree of lip-rounding; the upper end outer peripheral face that drives mouth is provided with serration; serration and movable connector engagement; accept the power that rotor transmits; wash shaft is combined on the rotor of motor; when rotating, rotor therewith is rotated; the inner peripheral surface that drives mouth is provided with serration; serration by with the engagement that is arranged on the serration on the wash shaft outer peripheral face; send the power of rotor to wash shaft; dehydrating shaft is arranged on the outside of wash shaft; the upper end adjacency of the lower end of dehydrating shaft and driving mouth; the lower end of dehydrating shaft is provided with serration; movable connector moves up and down along dehydrating shaft; only send the driving force of motor to wash shaft; perhaps send wash shaft and dehydrating shaft simultaneously to; along with the serration of dehydrating shaft and moving of the serration that drives mouth; movable connector transmits the driving force of rotor selectively to dehydrating shaft; drive unit is connected between power supply and the brshless DC motor; each is to parallel connection drive unit is connected 6 triodes respectively in two a pair of modes after; the emitter stage of a triode is connected on the colelctor electrode of another triode in the every pair of triode; also connect with the interface of a phase place of brshless DC motor respectively simultaneously; the base stage of each triode is connected microcomputer respectively with by interface; after microcomputer is judged the rotary speed of motor; the target velocity of rotary speed after judging and the program that configured is compared; control according to time signal according to comparative result; motor is rotated with target velocity; it is characterized in that: described control device comprises solenoid coil; thermoelectric protector and Hall element; supply along with power supply; solenoid coil plays the effect of electromagnet; attract movable connector; thermoelectric protector is attached on the coil of solenoid coil; when thermoelectric protector rises in the excessive temperature of the coil of solenoid coil; cut-out is to the power supply of coil supply; the guard circle solenoid; each end of a plurality of Hall elements is attached in the middle of the coil and thermoelectric protector in the cylinder type coil; obtain the supply of power supply by thermoelectric protector, be used for the rotary speed and the direction of rotation of perception motor.
2. the control method of an automatic washing machine, described automatic washing machine comprises brshless DC motor, wash shaft, dehydrating shaft, movable connector, brshless DC motor is made of stator and rotor, rotor is provided with rotor yoke, rotor yoke is provided with the magnet that keeps a determining deviation with stator, rotor yoke is formed by metal material, the central authorities of rotor yoke are provided with rotor axle sleeve, rotor axle sleeve becomes one by the plug-in module and the driving degree of lip-rounding, the upper end outer peripheral face that drives mouth is provided with serration, serration and movable connector engagement, accept the power that rotor transmits, wash shaft is combined on the rotor of motor, when the rotation of rotor, therewith be rotated, the inner peripheral surface that drives mouth is provided with serration, serration by with the engagement that is arranged on the serration on the wash shaft outer peripheral face, send the power of rotor to wash shaft, dehydrating shaft is arranged on the outside of wash shaft, the upper end adjacency of the lower end of dehydrating shaft and driving mouth, the lower end of dehydrating shaft is provided with serration, movable connector moves up and down along dehydrating shaft, only send the driving force of motor to wash shaft, perhaps send wash shaft and dehydrating shaft simultaneously to, along with the serration of dehydrating shaft and moving of the serration that drives mouth, movable connector transmits the driving force of rotor selectively to dehydrating shaft, drive unit is connected between power supply and the brshless DC motor, each is to parallel connection drive unit is connected 6 triodes respectively in two a pair of modes after, the emitter stage of a triode is connected on the colelctor electrode of another triode in the every pair of triode, also connect with the interface of a phase place of brshless DC motor respectively simultaneously, the base stage of each triode is connected microcomputer respectively with by interface, after microcomputer is judged the rotary speed of motor, the target velocity of rotary speed after judging and the program that configured is compared, control according to time signal according to comparative result, motor is rotated with target velocity, it is characterized in that: described control method comprises:
When the coil temperature of solenoid coil excessively rises, make thermoelectric protector carry out work, cut off power supply to the coil supply, simultaneously, cut off the stage that is supplied to power supply on the Hall element that is attached on the thermoelectric protector,
When cut-out is supplied to power supply on the Hall element, detect stage of this process by microcomputer,
Microcomputer cuts off the power supply to the motor supply, stops the stage of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021565481A CN100414028C (en) | 2002-12-17 | 2002-12-17 | Control device of brushless D.C. motor for fully-automatic washing machine and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021565481A CN100414028C (en) | 2002-12-17 | 2002-12-17 | Control device of brushless D.C. motor for fully-automatic washing machine and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1508342A CN1508342A (en) | 2004-06-30 |
| CN100414028C true CN100414028C (en) | 2008-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021565481A Expired - Fee Related CN100414028C (en) | 2002-12-17 | 2002-12-17 | Control device of brushless D.C. motor for fully-automatic washing machine and control method thereof |
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| CN (1) | CN100414028C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20100106154A (en) * | 2009-03-23 | 2010-10-01 | 엘지전자 주식회사 | Sensing module and clothes treatment apparatus having the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1527684A1 (en) * | 1987-09-10 | 1989-12-07 | Всесоюзный научно-исследовательский и проектно-конструкторский институт по автоматизированному электроприводу в промышленности, сельском хозяйстве и на транспорте | Device for protection of three-phase electric motor from overload and asymmetry of phase currents |
| CN1361581A (en) * | 2000-12-25 | 2002-07-31 | 哈尔滨工业大学 | Brush-less Dc motor for driving washing machine directly |
-
2002
- 2002-12-17 CN CNB021565481A patent/CN100414028C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1527684A1 (en) * | 1987-09-10 | 1989-12-07 | Всесоюзный научно-исследовательский и проектно-конструкторский институт по автоматизированному электроприводу в промышленности, сельском хозяйстве и на транспорте | Device for protection of three-phase electric motor from overload and asymmetry of phase currents |
| CN1361581A (en) * | 2000-12-25 | 2002-07-31 | 哈尔滨工业大学 | Brush-less Dc motor for driving washing machine directly |
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| CN1508342A (en) | 2004-06-30 |
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