WO2015050397A1 - 세탁기 모터 및 이를 구비한 세탁기 - Google Patents
세탁기 모터 및 이를 구비한 세탁기 Download PDFInfo
- Publication number
- WO2015050397A1 WO2015050397A1 PCT/KR2014/009325 KR2014009325W WO2015050397A1 WO 2015050397 A1 WO2015050397 A1 WO 2015050397A1 KR 2014009325 W KR2014009325 W KR 2014009325W WO 2015050397 A1 WO2015050397 A1 WO 2015050397A1
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- WIPO (PCT)
- Prior art keywords
- rotor
- shaft
- washing
- washing machine
- pulsator
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
- D06F37/40—Driving arrangements for driving the receptacle and an agitator or impeller, e.g. alternatively
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
- D06F37/304—Arrangements or adaptations of electric motors
Definitions
- the present invention relates to a washing machine motor capable of independently driving a washing tank and a pulsator, and a washing machine having the same.
- Patent Document 1 the outer case forming the appearance, the outer tub that is supported by the inside of the outer case to accommodate the wash water therein, the outer tank Washing and dehydration combined inner tub that is rotatably accommodated in the interior of the inner tank, the pulsator (Pulsator) is installed so as to rotate relative to the inside of the inner tub to form a water flow, and the driving force for rotating the inner tank and the pulsator
- Patent Document 1 Conventional washing machine disclosed in Patent Document 1 is provided with a planetary gear set consisting of a sun gear, a ring gear, a planetary gear and a carrier, decelerating the rotational force of the drive motor to transfer to the pulsator and inner tank, the clutch spring is operated to the It selectively transmits power to the inner tank to rotate only the pulsator when washing and simultaneously rotates the pulsator and inner tank when dewatering.
- the conventional washing machine requires a planetary gear device, a clutch, etc. to selectively rotate the pulsator and the inner tank, and thus, the configuration is complicated and manufacturing cost increases.
- the conventional washing machine increases the space occupied in the height direction of the washing machine. Accordingly, when the height of the washing machine is increased or the height of the washing machine is the same, Since the height should be reduced, there is a problem that the washing capacity is reduced.
- the clutch spring is tightened to the outer circumferential surfaces of the first clutch drum and the second clutch drum.
- the pulsator rotating shaft and the inner tank rotating shaft are integrally rotated in the same direction at the same speed.
- a bearing in which the bearing supporting the planetary gear device is rotatable only in one direction is used.
- the washing machine of Patent Document 1 has a structure in which the pulsator and the inner tank can be rotated only in the same direction, and the pulsator and the inner tank cannot be rotated in opposite directions, and thus various washing water flows cannot be formed. There is a limit to improvement.
- another conventional washing machine motor rotates only the pulsator in the state of braking the inner tank during washing, and simultaneously rotates the pulsator and the inner tank when dewatering.
- Korean Patent Laid-Open Publication No. 10-2012-0136081 (Patent Document 2) is rotatably supported on the support member and connected to the dehydration tank is connected to the dehydration tank rotating shaft for rotating the dehydration tank, rotatably inside the dehydration tank rotating shaft A pulsator rotating shaft disposed and connected to the pulsator to rotate the pulsator, an inner rotor connected to the dehydration tank rotating shaft, an outer rotor connected to the pulsator rotating shaft, and disposed with a gap between the inner rotor and the outer rotor, Disclosed is a driving apparatus for a direct type washing machine including an inner rotor and an outer rotor and a double stator, each of which forms a magnetic circuit.
- the driving apparatus of patent document 2 rotates a dehydration tank through a dehydration tank rotating shaft by an inner rotor, and rotates a pulsator through a pulsator rotating shaft by an outer rotor. Therefore, the inner rotor has high speed and low torque characteristics of about 1000 rpm and 3 Nm to be suitable for the dehydration mode, and the outer rotor is designed to have low speed and high torque characteristics of about 100 rpm and 15 Nm to be suitable for the washing mode.
- the inner rotor has a high speed and low torque characteristic in the washing mode. Since it is designed to have a problem when applying this to the washing mode, the torque is small, the current increases. In particular, a washing machine with a washing capacity of 8Kg class requires high torque of about 15Nm, and a washing machine with a washing capacity of 13Kg class requires high torque of about 40Nm. There is a problem that the temperature rise is caused by the current density rise.
- the purpose of the present invention is to adopt a washing machine motor having a double rotor-double stator structure and provide a co-force, it is possible to drive the pulsator and the washing tank independently of each other to eliminate the existing clutch device can simplify the structure It is to provide a washing machine motor capable of reverse driving of a pulsator and a washing tank and a washing machine having the same.
- Another object of the present invention is to drive the pulsator and the washing tank independently, and to set the planetary gear in a state capable of rotating in both directions to implement a bidirectional force and a single force washing machine motor to form a variety of water flow patterns And to provide a washing machine having the same.
- Still another object of the present invention is to provide a washing machine motor suitable for a large capacity washing machine and a washing machine having the same by enabling torque conversion by shifting the rotational speed of the inner shaft.
- Another object of the present invention is to connect the outer rotor to the washing tank, the output of the inner rotor with a small torque generated by connecting the inner rotor with the pulsator drives the pulsator through the planetary gear device, the outer rotor generated a large torque
- the output of the washing machine can be formed by driving the washing tank through the planetary gear device without shifting, and the washing can be formed using the reverse driving of the pulsator and the washing tank to form a variety of washing water, and a washing machine motor and a washing machine having the same To provide.
- Still another object of the present invention is to provide a washing machine motor and a washing machine having the same, in which a planetary gear device can be disposed in an inner space of a motor as the conventional clutch device is removed, thereby reducing the height of the planetary gear device.
- Washing machine motor of the present invention is an outer rotor connected by a washing tank through the outer shaft; An inner rotor connected by a pulsator through the inner shaft; And a stator disposed with a gap between the inner rotor and the outer rotor and independently driving the inner rotor and the outer rotor, wherein the outer shaft is rotated at the same speed as the outer rotor, and the inner shaft increases torque. It is characterized in that the deceleration relative to the rotational speed of the inner rotor to be.
- the outer shaft includes a first outer shaft connected to the outer rotor, a second outer shaft connected to the washing tank, and the inner shaft includes a first inner shaft connected to the inner rotor, and a second inner connected to the pulsator. It may include a shaft.
- the planetary gear device includes a ring gear connecting between a first outer shaft and a second outer shaft, a sun gear connected to the first inner shaft, an outer gear of the sun gear, and a planetary gear geared to an inner surface of the ring gear. And a carrier possibly supported and connected to the second inner shaft.
- the planetary gear device may be disposed in an inner space of the inner rotor.
- the inner rotor has a first magnet disposed at an inner surface of the stator with a predetermined gap, a first back yoke disposed on a rear surface of the first magnet, and the first magnet and the first back yoke are fixed to an inner shaft. It may include an inner rotor support to be connected.
- the outer rotor has a second magnet disposed on the outer surface of the stator with a predetermined gap, a second back yoke disposed on the rear surface of the second magnet, and the second magnet and the second back yoke are fixed to the outer shaft.
- the outer rotor support may be connected.
- the stator is divided into a plurality of stator cores are arranged in an annular arrangement, a bobbin wrapped around the outer peripheral surface of each of the plurality of stator cores, a first coil wound on one side of each stator core, and each A second coil wound on the other side of the stator core and a plurality of stator cores may be arranged in an annular arrangement to integrate the stator support fixed to the bearing housing.
- the plurality of stator cores may be integrally formed.
- the stator support may be integrally formed with the stator core by insert molding.
- the washing machine motor includes an outer rotor connected to the outer shaft; An inner rotor connected to the inner shaft coaxially disposed in the outer shaft; A double stator disposed with a gap between the inner rotor and the outer rotor and independently driving the inner rotor and the outer rotor; And a planetary gear device installed on the inner shaft to reduce the rotation speed of the inner shaft.
- the washing machine includes an outer tub for receiving the wash water; A washing tank rotatably disposed in the outer tub to perform washing and dehydration; A pulsator rotatably disposed in the washing tank to form a washing stream; And a washing machine motor that independently drives the washing tub and the pulsator, wherein the washing machine motor comprises: an outer rotor connected to an outer shaft; An inner rotor connected to the inner shaft; A stator disposed with a gap between the inner rotor and the outer rotor and independently driving the inner rotor and the outer rotor; And a planetary gear device installed on the inner shaft to reduce the speed, wherein the outer shaft is rotatably supported in both directions.
- Driving the pulsator and the washing tank in different directions and at different speeds to form a strong washing water stream in the form of a pattern, or driving the pulsator and the washing tank in different directions and at the same speed to form a strong washing water stream to increase the degree of cleaning. can do.
- the washing machine of the present invention may further include first and second bearings respectively installed on the outer shaft to rotatably support the outer shaft and the planetary gear device in both directions.
- the washing machine motor of the present invention can drive the pulsator and the washing tank independently, so that the existing clutch can be eliminated, thereby simplifying the structure and allowing the reverse driving of the pulsator and the washing tank. Can be formed.
- the washing machine motor of the present invention can drive the pulsator and the washing tank independently, so that it is possible to implement a twin force and a single force to form a variety of water flow pattern performance of the washing machine, such as improved washing degree and shorter washing time Improvement can be aimed at.
- washing machine motor of the present invention is installed on the inner shaft connected to the pulsator, the planetary gear device, it is possible to increase the torque by reducing the rotation speed can implement a large capacity washing machine.
- the washing machine motor of the present invention connects the outer rotor to the washing tank, the inner rotor is connected to the pulsator, and the outer rotor having a large torque rotates the washing tank, thereby improving the performance of the washing machine.
- the output of the inner rotor with the small torque generated drives the pulsator through the planetary gear device
- the output of the outer rotor with the large torque generated drives the washing tank through the planetary gear device without shifting. It is possible to wash by using the pulsator and the washing tank reverse driving to form a variety of washing water flow, it is possible to implement a large-capacity washing machine.
- FIG. 1 is a cross-sectional view of a washing machine according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of a washing machine motor according to an embodiment of the present invention.
- FIG 3 is a cross-sectional view of the planetary gear device according to an embodiment of the present invention.
- FIG. 4 is a view of the stator according to an embodiment of the present invention.
- FIG. 5 is a cross-sectional view of a washing machine motor according to an embodiment of the present invention.
- FIG. 6 is a cross-sectional view of a stator according to an embodiment of the present invention.
- FIG. 7 is a cross-sectional view of the stator core according to an embodiment of the present invention.
- FIG. 8 is a block circuit diagram of a washing machine control apparatus according to the present invention.
- FIG. 1 is a cross-sectional view of a washing machine according to an embodiment of the present invention
- Figure 2 is a cross-sectional view of a washing machine motor according to an embodiment of the present invention.
- a washing machine includes a case 100 forming an external appearance, an outer tub 110 disposed inside the case 100 to receive wash water, and an outer tank (
- the washing tank 120 is rotatably disposed inside the washing tank 120 to perform washing and dehydration, and the pulsator 130 is rotatably disposed inside the washing tank 120 to form washing water flow. It is installed in the lower portion includes a motor 140 for driving the washing tank 120 and the pulsator 130 simultaneously or selectively.
- the motor 140 is rotatably disposed in the outer shafts 20 and 22 and the outer shafts 20 and 22 connected to the washing tank 120 and the pulsator 130.
- Inner shafts 30 and 32 to be connected, an outer rotor 50 to be connected to the outer shafts 20 and 22, an inner rotor 40 to be connected to the inner shafts 30 and 32, and an inner rotor 40.
- a stator 60 disposed with a gap between the outer rotor 50 and a planetary gear device installed on the inner shafts 30 and 32 to reduce the rotational speed of the inner shafts 30 and 32 to increase torque. 70).
- the outer shafts 20 and 22 are formed in a cylindrical shape to allow the inner shafts 30 and 32 to pass therethrough, the first outer shaft 20 connected to the inter rotor 40, and the second connected to the washing tub 120. And an outer shaft 22.
- the inner shafts 30 and 32 include a first inner shaft 30 connected to the outer rotor 50 and a second inner shaft 32 connected to the pulsator 130.
- the planetary gear device 70 is integrally formed with a ring gear 72 connecting the first outer shaft 20 and the second outer shaft 22 and the first inner shaft 30. And a planetary gear 78 which is geared to the outer surface of the sun gear 74 and the inner surface of the ring gear 72 and the planetary gear 78 are rotatably supported and connected to the second inner shaft ( A carrier 76 connected to 32.
- the first outer shaft 20 and the second outer shaft 22 are connected by a ring gear 72 such that the rotation speed of the first outer shaft 20 is maintained as it is. 22). Therefore, the rotation speeds of the first outer shaft 20 and the second outer shaft 22 are the same.
- first inner shaft 30 is integrally formed with the sun gear 74
- second inner shaft 32 is connected to the carrier 76 by spline coupling, etc.
- the carrier 76 is a planetary gear 78 It is rotatably supported in the center of the rotation speed of the first inner shaft 30 is reduced is transmitted to the second inner shaft (32).
- the inner shafts 30 and 32 are connected by the planetary gear device 70 so that the rotation speed of the inner rotor 40 is reduced and transmitted to the pulsator 130, thereby increasing the torque of the pulsator 130. It can be applied to a large capacity washing machine accordingly.
- a cylindrical first sleeve bearing 80 and a second sleeve bearing 82 are installed between the outer circumferential surface of the first inner shaft 30 and the inner circumferential surface of the first outer shaft 20 to form the first inner shaft 30. Support rotatably.
- the third sleeve bearing 84 and the fourth sleeve bearing 86 are installed on upper and lower inner surfaces of the second outer shaft 22 to rotatably support the second inner shaft 32.
- the outer surface of the first outer shaft 20 is formed with a first connecting portion 90 to which the outer rotor support 56 of the outer rotor 50 is connected, and the inner rotor 40 at the lower end of the first inner shaft 30.
- the inner rotor support 46 of the second connecting portion 92 is formed.
- the first connector 90 and the second connector 92 may have a structure that is serration-coupled or spline-coupled by protrusions formed on outer surfaces of the first outer shaft 20 and the first inner shaft 30. It may have a structure in which key grooves are formed to mutually key.
- first fixing nut 34 is screwed to the lower end of the first outer shaft 20 to prevent the outer rotor support 56 from being separated from the first outer shaft 20, and the first inner shaft (
- the second fixing nut 36 is screwed to the lower end of the 30 to prevent the inner rotor support 46 of the inner rotor 40 from being separated.
- a third connection portion 94 is formed on the upper outer surface of the second outer shaft 22 to connect the washing tub 120, and a fourth connection portion is connected to the pulsator 130 on the upper outer surface of the second inner shaft 32. 96 is formed.
- the third connector 94 and the fourth connector 96 may have a structure that is serration-coupled or spline-coupled by protrusions formed on outer surfaces of the second outer shaft 22 and the second inner shaft 32. It may have a structure in which key grooves are formed to mutually key.
- a first seal 220 is installed between the second outer shaft 22 and the second inner shaft 32 to prevent the washing water from leaking, and is washed between the second outer shaft 22 and the bearing housing 10.
- a second seal 210 is mounted to prevent leakage of water.
- the first bearing 26 is disposed on the outer surface of the first outer shaft 20, and the second bearing 28 is disposed on the outer surface of the second outer shaft 22 to rotate the outer shafts 20 and 22. Support.
- the first bearing 26 is installed in the first bearing housing 102, and the second bearing 28 is installed in the second bearing housing 10.
- the first bearing housing 102 is formed of a metal material, and extends outwardly from the first bearing seat 104 and the first bearing seat 104 on which the first bearing 26 is seated to form a cylindrical shape.
- the cover part 106 is disposed to be wrapped with a predetermined gap on the outer surface of the planetary gear device 70 to protect the planetary gear device, and extends outward from the upper end of the cover part 106 to form a disc and stator ( 60) and the flat plate portion 108 to which the outer tub 110 is fixed.
- the flat plate 108 is fastened to the second bearing housing by a plurality of bolts 250 in the circumferential direction.
- the second bearing housing 10 is formed of a metal material, and extends outwardly from the second bearing seat 12 and the second bearing seat 12 on which the second bearing 28 is seated.
- the flat plate 18 is fastened to the flat plate 108 of the first bearing housing by the bolt 250, and is fixed to the stator support 270 and the outer tub 110 by the bolt 260.
- the inner rotor 40 includes a first magnet 42 disposed with a predetermined gap on the inner surface of the stator 60 and a first back yoke disposed on the rear surface of the first magnet 42. 44 and an inner rotor support 46 formed integrally with the first magnet 42 and the first back yoke 44 by insert molding.
- the inner rotor support 46 is formed integrally with the first magnet 42 and the first back yoke 44 by molding with a thermosetting resin, for example, a bulk molding compound (BMC) molding material such as polyester. . Therefore, the inner rotor 40 can have waterproof performance and can shorten the manufacturing process.
- a thermosetting resin for example, a bulk molding compound (BMC) molding material such as polyester.
- the inner rotor support 46 has an inner surface connected to the second connecting portion 92 of the first inner shaft 30, and the outer surface of the inner rotor support 46 is fixed to the first magnet 42 and the first back yoke 44. do.
- the pulsator 130 may be sufficiently rotated by the torque of the inner rotor 40 because the rotation torque is not large.
- the outer rotor 50 includes a second magnet 52 disposed on the outer surface of the stator 60 with a predetermined gap, a second back yoke 54 disposed on the rear surface of the second magnet 52, and an insert.
- the outer rotor support 56 is formed integrally with the second magnet 52 and the second back yoke 54 by molding.
- the outer rotor support 56 is formed integrally with the second magnet 52 and the second back yoke 54 by molding with a thermosetting resin, for example, a BMC (Bulk Molding Compound) molding material such as polyester. .
- a thermosetting resin for example, a BMC (Bulk Molding Compound) molding material such as polyester.
- the outer rotor 50 can have waterproof performance and can shorten the manufacturing process.
- the outer rotor support 56 has an inner surface connected to the first connection portion 90 of the first outer shaft 20 and rotated together with the first outer shaft 20, and the outer surface of the outer rotor support 56 has a second magnet 52 and a first portion.
- the 200 yoke 54 is fixed.
- the outer rotor 50 has a larger torque than the inner rotor 40.
- a larger torque than the pulsator 130 is required.
- the washing machine motor may implement a large-capacity washing machine because the outer rotor 50 having a large torque is connected to the washing tub 120 requiring a large torque.
- FIG. 5 is a cross-sectional view of a washing machine motor according to an embodiment of the present invention
- FIG. 6 is a schematic cross-sectional view of a split type stator according to an embodiment of the present invention
- FIG. 7 is a stator according to an embodiment of the present invention. Top view of the core.
- the stator 60 includes a plurality of split stator cores 62 arranged in an annular shape, a bobbin 64 that is a nonmagnetic material wrapped around the outer circumferential surface of the stator core 62, and a stator core.
- the first coil 66 wound on one side of the 62, the second coil 68 wound on the other side of the stator core 62, and the stator core 62 are arranged in an annular shape and fixed to the outer tub 110.
- a stator support 270 is arranged in an annular shape and fixed to the outer tub 110.
- the stator support 270 is formed integrally with the stator core 62 by insert molding after arranging the stator cores 62 in the mold in the circumferential direction.
- thermosetting resin for example, a BMC (Bulk Molding Compound) molding material such as polyester molding the stator support 102 in an insert molding method, wherein the plurality of stator cores 62 in the mold in the circumferential direction It is arranged integrally at regular intervals.
- BMC Bit Molding Compound
- stator support 270 is manufactured separately from the stator core 62 and then bolted to the stator support 270.
- the stator core 62 is formed on the opposite side of the first teeth portion 310 and the first teeth portion 310 on which the first coils 66 are wound.
- stator cores 62 having a split type are assembled in an annular shape to form a stator core, and the structure is integrated by the stator support 69, but the stator core may be integrally formed. .
- the first and second outputs are simultaneously applied to the 68, the inner rotor 40 and the outer rotor 50 are rotated at the same time.
- the through hole 332 is formed in the center of the partition 314 so that the first magnetic circuit formed by the first coil 66 and the second magnetic circuit formed by the second coil 68 interfere with each other. It serves to prevent.
- the through hole 332 may be formed long in the lateral direction of the partition 314 in the form of a slot in addition to the circular.
- the first flange portion 316 disposed to face the first magnet 44 is formed at the end of the first tooth portion 310, and the second magnet 54 is formed at the end of the second tooth portion 312.
- a second flange portion 318 is disposed to face the formation.
- the first flange 316 and the second flange portion 318 are inward and at a predetermined curvature so as to correspond to the first magnet 42 of the inner rotor 40 and the second magnet 52 of the outer rotor 50, respectively. It forms an outwardly curved surface. Therefore, since the roundness of the inner circumferential surface and the outer circumferential surface of the stator core 62 is increased, the magnetic gap is constant while the inner circumferential surface and the outer circumferential surface of the stator 60 are close to each other while the first magnet 42 and the second magnet 52 are close to each other. Can be maintained.
- the coupling parts 320 and 322 have a structure directly connected to allow the stator cores 62 to be energized with each other.
- the coupling parts 320 and 322 are formed such that the coupling protrusion 322 protrudes on one side of the partition 314, and the coupling groove 320 into which the coupling protrusion 322 is fitted to the other side of the partition 314. ) Is formed, and when the coupling protrusion 322 is inserted into the coupling groove 320 to assemble, a plurality of stator cores 62 are arranged in an annular shape and have a structure directly connected to each other.
- the coupling portion forms pinholes at both ends of the partition portion of the stator core, and connects the pin member between the pinholes of the two stator cores while connecting the cores to each other to connect the stator cores. It is also possible to apply the structure, and a method of caulking using a caulking member in a state in which the stator cores are in contact with each other.
- connectors 162 and 164 for applying the first output of the first inverter 530 and the second output of the second inverter 540 to the first coil 66 and the second coil 68.
- the connectors 162 and 164 include a first connector 162 to which a second output applied to the second coil 68 is connected to rotate the washing tub 110, and a first coil 66 to rotate the pulsator 130. It includes a second connector 164 connected to the second output is applied to.
- first connector 162 and the second connector 164 are integrally formed when insert-exjecting the stator support 270. That is, when insert molding is performed after the first connector 162 and the second connector 164 are disposed in a mold, the first connector 162 and the second connector 164 are integrally formed on the stator support 270. .
- the washing machine driving device including the washing machine motor 140 of the present invention forms a first magnetic circuit L1 between one side of the stator 60 on which the inner rotor 40 and the first coil 66 are wound. Since the second magnetic circuit L2 is formed between the outer rotor 50 and the other side of the stator 60 on which the second coil 68 is wound to form a pair of magnetic circuits that are independent of each other, the inner rotor 40 and The outer rotor 50 may be driven separately from each other.
- the first magnetic circuit (L1) is the first magnet 42 of the N pole
- the first teeth portion 310 is wound around the first coil 66, the inner portion of the partition portion 314, the first adjacent Via the tooth part 310, the first magnet 42 of the S pole and the first back yoke 44 adjacent to the first magnet 42 of the N pole.
- the second magnetic circuit L2 is divided into a second tooth portion 312 facing the second magnet 52 of the N pole, the second magnet 52 of the N pole, and the second coil 68 wound thereon. Via the outer portion of the portion 314, the adjacent second teeth portion 312, the second magnet 54 of the S pole, and the second back yoke 54.
- the washing machine control apparatus includes a first inverter 530 generating a first driving signal applied to the first coil 66 and a second driving applied to the second coil 68. It includes a second inverter 540 for generating a signal, the first inverter 530, the second inverter 540 and the control unit 500 for controlling the entire washing machine.
- the control unit 500 serves as a system controller to control the entire washing machine at the same time as the control of the first and second inverters (530,540) as described above, or according to the washing course set by the user from the system controller of the washing machine body After receiving the determined washing control signal may be configured as a driver-specific control device for applying a separate control signal to the first and second inverters (530, 540) based on this.
- the control unit 500 may be configured as a signal processing device such as a microcomputer or a microprocessor.
- the washing machine motor 140 is made of a twin-force structure consisting of a double rotor-double stator, for example, the motor control is made by U, V, W three-phase drive system.
- the first and second coils 66 and 68 of the stator 60 also consist of U, V, and W three-phase coils, respectively.
- the first coil 66 wound on the first tooth part 310 extending in the center direction from the stator 60 forms an inner stator
- the second coil wound on the second tooth part 312 extending in the radial direction.
- the coil 68 forms an outer stator.
- the inner rotor 40 which is rotated by the inner stator forms an inner motor
- the outer rotor 50 which is rotated by the outer stator forms an outer motor
- the inner motor and the outer motor are each BLDC.
- the motor structure is designed to be controlled in such a way that the first and second inverters 530 and 540 are driven, for example, in a six-step drive control.
- the first and second inverters 530 and 540 may each include three pairs of switching transistors connected in a totem pole structure, and the three-phase output of each inverter may be U, the first and second coils 66 and 68. V, W three-phase coil is applied.
- the control unit for controlling the first and second inverters 530 and 540 may be, for example, an inner rotor 40 and an outer rotor 40 from the first and second rotor position sensors 510 and 520, which may be hall sensors.
- the first and second inverters 530 and 540 When the rotational position of the controller 50 is detected and a PWM control signal is applied to the first and second inverters 530 and 540, the first and second inverters output U, V, and W three-phase outputs to the first and second coils.
- the inner rotor 40 and the outer rotor 50 are rotationally driven by applying them to the U, V, and W three-phase coils of 66 and 68.
- control unit 500 controls the first and second inverters 530 and 540 to selectively and independently apply the first and second inverter outputs to the first and second coils 66 and 68.
- the inner rotor 40 and the outer rotor 50 can be driven to rotate selectively and independently.
- the planetary gear device 70 has a ring gear 72 connected between the first and second outer shafts 20 and 22, and the first and second outer shafts 20 and 22 are bidirectional.
- the planetary gear device 70 is also rotatably supported in both directions because the first and second bearings 26 and 28 are rotatable in both directions.
- the washing machine uses the washing machine motor 140 configured as the double rotor-double stator, and uses the first and second inverters to output the U, V, and W three-phase outputs to the first and second coils 66.
- the inner rotor 40 and the outer rotor 50 are independently driven to rotate by applying them to the U, V, and W three-phase coils of (68).
- the rotational force of the inner rotor 40 and the outer rotor 50 is transmitted to the pulsator 130 and the washing tank 120 through the inner shafts 30 and 32, the outer shafts 20 and 22, and the planetary gear device 70. ),
- the pulsator 130 and the washing tank 120 are driven independently, and the planetary gear device 70 is supported by the first and second bearings 26 and 28 capable of bidirectional rotation. Therefore, by controlling the rotational direction and the rotational speed of the pulsator 130 and the washing tank 120 can form a variety of water flow.
- the first coil and the second coil 68 simultaneously hold the first and second inverters ( First and second inverter outputs are applied from 530 and 540, respectively.
- the inner rotor 40 is rotated by the magnetic circuit L1
- the inner shafts 30 and 32 connected to the inner rotor 40 are rotated to rotate the washing tub 120
- the outer rotor is rotated by the magnetic circuit L2.
- the rotation speed of the washing tank 120 and the pulsator 130 is preferably controlled at the same speed.
- the first coil 66 and the second coil 68 Inverter output is applied simultaneously or with time difference, and the first inverter output applied to the first coil and the second inverter output applied to the second coil are controlled independently so that the inner rotor 40 and the outer rotor 50 are controlled.
- various washing water streams may be formed by rotating the pulsator 130 and the dehydration tank 120 at the same direction and at the same speed or at the same direction and at different speeds during the washing and rinsing strokes.
- a strong washing water stream may be formed, and the pulsator 130 and the washing tank 120 may be formed.
- the rotational speed of the pulsator 130 and the washing tank 120 by changing the rotational speed of the pulsator 130 and the washing tank 120, it is possible to form a rhythm water flow, as a result it is possible to implement the rhythm washing. That is, when the rotational speeds of the pulsator 130 and the washing tank 120 are controlled to be sharply variable, it is possible to prevent damage to the laundry while forming a strong stream and a rhythm stream.
- the pulsator 130 and the washing tank 120 can be rotated with a time difference in the same direction to form various washing water streams.
- a washing machine motor having a double rotor-double stator structure and providing a twin power can independently drive the pulsator and the washing tub, thereby eliminating the existing clutch device, thereby simplifying the structure and pulsator.
- the present invention relates to a washing machine motor capable of reverse driving of a washing machine and a washing tank, and may be applied to a fully automatic washing machine.
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
Claims (17)
- 아우터 샤프트를 통하여 세탁조에 의해 연결되는 아우터 로터;인너 샤프트를 통하여 펄세이터에 의해 연결되는 인너 로터; 및상기 인너 로터와 아우터 로터 사이에 공극을 두고 배치되며 상기 인너 로터와 아우터 로터를 독립적으로 구동하는 스테이터를 포함하고,상기 아우터 샤프트는 아우터 로터와 동일한 속도로 회전되고, 상기 인너 샤프트는 토크를 증가시킬 수 있도록 상기 인너 로터의 회전속도에 비해 감속되는 것을 특징으로 하는 세탁기 모터.
- 제1항에 있어서,상기 아우터 샤프트는 아우터 로터에 연결되는 제1아우터 샤프트와, 세탁조에 연결되는 제2아우터 샤프트를 포함하고,상기 인너 샤프트는 인너 로터에 연결되는 제1인너 샤프트와, 펄세이터에 연결되는 제2인너 샤프트를 포함하는 것을 특징으로 하는 세탁기 모터.
- 제2항에 있어서,상기 제1인너 샤프트와 제2인너 샤프트 사이에 설치되어 상기 제1인너 샤프트의 회전속도를 감속시켜서 상기 제2인너 샤프트로 전달하는 유성기어 장치를 더 포함하며,상기 유성기어 장치는 제1아우터 샤프트와 제2아우터 샤프트 사이를 연결하는 링기어와, 상기 제1인너 샤프트에 연결되는 선기어와, 상기 선기어의 외면 및 링기어의 내면에 기어 물림되는 다수의 유성기어와, 상기 유성기어가 회전 가능하게 지지되고 제2인너 샤프트에 연결되는 캐리어를 포함하는 것을 특징으로 하는 세탁기 모터.
- 제2항에 있어서,상기 제1아우터 샤프트의 외면에는 제1베어링이 배치되고, 제2아우터 샤프트의 외면에는 제2베어링이 배치되며,상기 제1베어링은 제1베어링 하우징에 설치되고, 상기 제2베어링은 제2베어링 하우징에 설치되는 것을 특징으로 하는 세탁기 모터.
- 제4항에 있어서,상기 제1베어링 하우징과 제2베어링 하우징의 가장자리는 서로 접쳐지고 외조에 고정되는 것을 특징으로 하는 세탁기 모터.
- 제1항에 있어서,상기 인너 로터는 상기 스테이터의 내면에 일정 갭을 두고 배치되는 제1마그넷과,상기 제1마그넷의 배면에 배치되는 제1백요크와,상기 제1마그넷 및 제1백요크가 일단에 고정되고, 타단이 인너 샤프트에 연결되는 인너 로터 지지체를 포함하며,상기 인너 로터 지지체는 인서트 몰딩에 의해 제1마그넷 및 제1백요크와 일체로 형성되는 것을 특징으로 하는 세탁기 모터.
- 제1항에 있어서,상기 아우터 로터는 상기 스테이터의 외면에 일정 갭을 두고 배치되는 제2마그넷과,상기 제2마그넷의 배면에 배치되는 제2백요크와,상기 제2마그넷 및 제2백요크가 일단에 고정되고, 타단이 아우터 샤프트에 연결되는 아우터 로터 지지체를 포함하며,상기 아우터 로터 지지체는 인서트 몰딩에 의해 제2마그넷 및 제2백요크와 일체로 형성되는 것을 특징으로 하는 세탁기 모터.
- 제1항에 있어서,상기 스테이터는 분할형으로 이루어지고 환형으로 배열되어 조립되는 다수의 스테이터 코어와, 상기 다수의 스테이터 코어 각각의 외주면에 감싸지는 보빈과, 상기 각 스테이터 코어의 일측에 감겨지는 제1코일과, 상기 각 스테이터 코어의 타측에 감겨지는 제2코일과, 상기 다수의 스테이터 코어를 환형으로 배열하여 일체화하고 베어링 하우징에 고정되는 스테이터 지지체를 포함하는 것을 특징으로 하는 세탁기 모터.
- 제8항에 있어서,상기 스테이터 지지체는 인서트 몰딩에 의해 스테이터 코어와 일체로 형성되는 것을 특징으로 하는 세탁기 모터.
- 제3항에 있어서,상기 유성기어 장치는 상기 인너 로터의 내부 공간부에 배치되는 것을 특징으로 하는 세탁기 모터.
- 아우터 샤프트와 연결되는 아우터 로터;상기 아우터 샤프트의 내부에 동축으로 배치된 인너 샤프트와 연결되는 인너 로터; 및상기 인너 로터와 아우터 로터 사이에 공극을 두고 배치되며 상기 인너 로터와 아우터 로터를 독립적으로 구동하는 더블 스테이터를 포함하는 세탁기 모터.
- 제11항에 있어서,상기 인너 샤프트에 설치되어 인너 샤프트의 회전속도를 감속시키는 유성기어 장치를 더 포함하며,상기 아우터 샤프트는 아우터 로터에 연결되는 제1아우터 샤프트와, 세탁조에 연결되는 제2아우터 샤프트를 포함하고,상기 인너 샤프트는 인너 로터에 연결되는 제1인너 샤프트와, 펄세이터에 연결되는 제2인너 샤프트를 포함하며,상기 유성기어 장치는 제1인너 샤프트와 제2인너 샤프트 사이에 설치되는 세탁기 모터.
- 제12항에 있어서,상기 아우터 샤프트는 양방향으로 회전 가능하게 지지되는 세탁기 모터.
- 세탁수를 수용하는 외조;상기 외조의 내부에 회전 가능하게 배치되어 세탁과 탈수를 수행하는 세탁조;상기 세탁조 내부에 회전 가능하게 배치되어 세탁 수류를 형성하는 펄세이터; 및상기 세탁조와 펄세이터를 독립적으로 회전 구동시키는 세탁기 모터;를 포함하며,상기 세탁기 모터는아우터 샤프트와 연결되는 아우터 로터;인너 샤프트와 연결되는 인너 로터;상기 인너 로터와 아우터 로터 사이에 공극을 두고 배치되며 상기 인너 로터와 아우터 로터를 독립적으로 구동하는 스테이터; 및상기 인너 샤프트에 설치되어 속도를 감속시키는 유성기어 장치를 포함하며,상기 아우터 샤프트는 양방향으로 회전 가능하게 지지되는 세탁기.
- 제14항에 있어서,상기 펄세이터와 세탁조를 서로 다른 방향 및 다른 속도로 구동하여, 패턴 형태의 강한 세탁 수류를 형성하는 것을 특징으로 하는 세탁기.
- 제14항에 있어서,상기 펄세이터와 세탁조를 서로 다른 방향 및 동일한 속도로 구동하여 세정도를 높이는 강한 세탁 수류를 형성하는 것을 특징으로 하는 세탁기.
- 제15항에 있어서,상기 아우터 샤프트에 각각 설치되어 상기 아우터 샤프트와 유성기어 장치를 양방향으로 회전가능하게 지지하는 제1 및 제2 베어링을 더 포함하는 것을 특징으로 하는 세탁기.
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US15/022,000 US9976243B2 (en) | 2013-10-02 | 2014-10-02 | Washing machine motor and washing machine comprising same |
CN201480053374.8A CN105579636B (zh) | 2013-10-02 | 2014-10-02 | 洗衣机马达及具有其的洗衣机 |
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KR1020140133037A KR101704742B1 (ko) | 2013-10-02 | 2014-10-02 | 세탁기 구동장치 및 이를 구비한 세탁기 |
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