CN107002338B - Washing machine and washing machine driving method - Google Patents
Washing machine and washing machine driving method Download PDFInfo
- Publication number
- CN107002338B CN107002338B CN201580061716.5A CN201580061716A CN107002338B CN 107002338 B CN107002338 B CN 107002338B CN 201580061716 A CN201580061716 A CN 201580061716A CN 107002338 B CN107002338 B CN 107002338B
- Authority
- CN
- China
- Prior art keywords
- washing
- output
- rotor
- pulsator
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- D06F33/00—Control of operations performed in washing machines or washer-dryers
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
The washing machine of the present invention comprises: a washing machine motor generating dual power by independently driving the outer rotor and the inner rotor, respectively; the washing tank is connected with the outer rotor through an outer shaft; and a pulsator connected to the inner rotor through the inner shaft and independently driven from the washing tub, wherein when the washing tub discharges water, if a discharge amount reaches a set value, at least one of the washing tub and the pulsator is rotated while supplying water, thereby improving a washing power of laundry and shortening a washing time.
Description
Technical Field
The present invention relates to a washing machine and a driving method thereof, which can realize double power by independently driving a washing tank and a pulsator.
Background
As disclosed in korean patent laid-open publication No. 10-0548310(2006, 01, 24), the conventional washing machine includes: a housing for forming a profile; an outer tub supported inside the housing and containing washing water therein; an inner washing and dewatering tank rotatably housed in the outer tank; a Pulsator (Pulsator) which is provided inside the inner tub so as to be relatively rotatable, and forms a washing water flow; a driving motor for generating a driving force for rotating the inner tub and the pulsator; an inner tank rotating shaft for receiving the driving force of the driving motor to rotate the inner tank; a pulsator rotating shaft which receives a driving force of the driving motor to rotate a pulsator; a sun wheel connected with the driving motor and the rotary shaft of the wave wheel; a plurality of planet gears simultaneously meshing with the sun gear and the ring gear; a carrier that supports the planetary gear such that the planetary gear can rotate and revolve; and a clutch spring for controlling the rotation of the inner tank and the pulsator when washing or dehydrating.
The conventional washing machine as described above includes a planetary gear set including a sun gear, a ring gear, a planetary gear and a carrier, reduces a rotational force of a driving motor, transmits the reduced rotational force to the pulsator and the inner tub, and selectively transmits power to the pulsator and the inner tub by activating a clutch spring, thereby rotating only the pulsator or simultaneously rotating the pulsator and the inner tub.
However, the conventional washing machine has a structure in which the pulsator and the inner tub are rotated only in the same direction, and thus the pulsator and the inner tub cannot be rotated in opposite directions, and dual power cannot be realized.
Disclosure of Invention
Technical problem
The invention aims to provide a washing machine driving method which can realize double power by respectively and independently driving a wave wheel and a washing tank and can form a plurality of water flow modes.
It is still another object of the present invention to provide a washing machine and a method of driving the same, in which when washing water contained in a washing tub is discharged during a dehydration process, one or both of the washing tub and a pulsator are driven or stopped repeatedly while supplying water, thereby removing washing residue and improving washing quality.
Another object of the present invention is to provide a washing machine and a method of driving the same, in which when water is supplied into a washing tub during a rinsing stroke, one or both of the washing tub and a pulsator are driven or driven to be repeatedly rotated and stopped while discharging water, thereby removing washing residue and reducing the number of rinsing strokes, thereby reducing a washing time.
Means for solving the problems
The washing machine of the present invention is characterized by comprising: a washing machine motor generating dual power by independently driving the outer rotor and the inner rotor, respectively; a washing tank connected with one of the outer rotor and the inner rotor; a pulsator connected to the other of the outer rotor and the inner rotor, and independently driven with respect to the washing tub; and a planetary gear device disposed between the washing machine motor and the pulsator, for reducing the rotation speed of the other of the outer rotor and the inner rotor and transmitting the reduced rotation speed to the pulsator, and disposed between the washing machine motor and the washing tub, for transmitting the rotation speed of the one of the outer rotor and the inner rotor to the washing tub without reducing the rotation speed, and for supplying water and rotating one or both of the washing tub and the pulsator when the water is discharged from the washing tub, if the discharged water amount reaches a set value.
When the water is drained from the washing tank, one of the washing tank and the pulsator may be driven to rotate and stop repeatedly, or both the washing tank and the pulsator may be driven to rotate and stop repeatedly in the same direction or in opposite directions, while supplying water, if the water drainage amount reaches a set value.
The set value may be set by a drain time or a water level of the washing tub.
The outer rotor may perform a brake action using an electronic brake or by rotating in the same direction as the inner rotor, thereby transmitting a rotational force of the inner rotor to the pulsator.
When a decelerated output is generated from the carrier of the planetary gear device, the ring gear of the planetary gear device may be set to a fixed state by an electronic brake, or a rotational speed (RPM) and a torque of the decelerated output may be controlled by applying a rotational force in the same or opposite direction as a rotational direction of the first input to the ring gear.
The washing machine of the present invention is characterized by comprising: a washing machine motor generating a driving force by independently driving the outer rotor and the inner rotor, respectively; a washing tank connected with one of the outer rotor and the inner rotor; and a pulsator connected to the other of the outer rotor and the inner rotor, independently driven from the washing tub, and configured to rotate one or both of the washing tub and the pulsator while draining water when water is supplied to the washing tub and a water supply amount reaches a set value.
The set value may be set by a water supply time or a water level of the washing tub.
The washing machine driving method of the present invention sequentially performs a washing stroke, a middle dehydration stroke, a rinsing stroke, and a dehydration stroke, the dehydration stroke including: when the washing tank drains water, if the drainage reaches the set value, the step of supplying water is carried out; and rotating one or both of the pulsator and the washing tub if the water discharge reaches a set value.
The dehydration stroke may include: an intermediate dewatering step of rotating at least one or both of the pulsator and the washing tub while supplying water if the washing tub drainage time reaches a set time; stopping the pulsator and the washing tub while stopping the water supply if the water supply time reaches a set time; and a formal dehydration step for dehydrating if the drainage of the washing tank is finished.
The rinsing stroke may include: supplying water to the washing tank; and a step of rotating one or both of the pulsator and the washing tub while discharging water if the amount of water supplied from the washing tub reaches a set value.
The rinsing stroke may include: a first rinsing process of supplying water to the washing tank, and if the water supply amount of the washing tank reaches a set value, discharging water and simultaneously rotating one or two of the impeller and the washing tank; and a second rinsing process, wherein if the first rinsing process is completed, the first rinsing process is executed at least once.
The washing machine of the present invention is characterized by comprising: a washing machine motor of a double-rotor double-stator mode comprises an inner rotor and an outer rotor which can be independently controlled by double stators, and the inner rotor output and the outer rotor output are selectively generated; a first inner shaft for transmitting the inner rotor output or the outer rotor output as a first input; a first outer shaft rotatably coupled to an outer periphery of the first inner shaft, the first outer shaft transmitting the output of the outer rotor or the output of the inner rotor as a second output; a planetary gear device that generates a decelerated output from a carrier when a first input is applied to a sun gear via a first inner shaft, and outputs a second input without deceleration when a second input is applied to a ring gear via a first outer shaft; a second inner shaft for transmitting a decelerated output generated from the carrier; a second outer shaft rotatably coupled to an outer periphery of the second inner shaft and transmitting an output generated from the ring gear; the impeller is connected with the second inner shaft; and a washing tank connected to the second outer shaft, wherein when the washing tank discharges water during a dehydration stroke or a rinsing stroke, one or both of the washing tank and the pulsator rotate while supplying water when the amount of water discharged from the washing tank reaches a set value.
The first input may have a high speed, low torque characteristic, the rotational speed of the second input applied to the ring gear is less than the rotational speed of the first input applied to the sun gear, and the output of the carrier is decelerated from the rotational speed of the first input, having a low speed, high torque characteristic, for use in a wash or rinse cycle of the washing machine.
The first input and the second input may have high speed and low torque characteristics, respectively, and the output of the ring gear may have high speed and low torque characteristics without speed change when the first input and the second input have the same rotation direction and rotation speed, and may be used in a spin-drying process of the washing machine.
ADVANTAGEOUS EFFECTS OF INVENTION
As described above, the washing machine of the present invention can embody dual power by independently driving the pulsator and the washing tub, respectively, thereby forming various water flow patterns.
Also, in the washing machine driving method of the present invention, when the washing water contained in the washing tub is discharged in the dehydration stroke, one or both of the washing tub and the pulsator are driven or driven to repeatedly rotate and stop while supplying water, whereby washing residue can be removed and a washing degree can be improved.
In the washing machine driving method according to the present invention, when water is supplied to the washing tub during the rinsing stroke, if the water supply amount reaches a set value, one or both of the washing tub and the pulsator are driven or driven to rotate and stop repeatedly while draining water, thereby removing washing residue and reducing the number of rinsing strokes, thereby shortening the washing time.
Drawings
Fig. 1 is a sectional view of a washing machine according to a first embodiment of the present invention.
Fig. 2 is a sectional view of a driving apparatus of a washing machine according to a first embodiment of the present invention.
Fig. 3 is an enlarged sectional view of a half of a motor of a washing machine in accordance with a first embodiment of the present invention.
Fig. 4 is a sectional view of the planetary gear device according to the first embodiment of the present invention.
Fig. 5 is a transverse sectional view of a motor of a washing machine according to a first embodiment of the present invention.
Fig. 6 is a sectional view of a stator according to a first embodiment of the present invention.
Fig. 7 is a sectional view of a stator core of the first embodiment of the invention.
Fig. 8 is a sectional view of a driving apparatus of a washing machine in accordance with a second embodiment of the present invention.
Fig. 9 is a sectional view of a driving apparatus of a washing machine according to a third embodiment of the present invention.
Fig. 10 is a schematic block diagram of a control device of a washing machine according to an embodiment of the present invention.
Fig. 11 is a flowchart illustrating a method for driving a washing machine according to an embodiment of the present invention.
Fig. 12 is a flowchart of a washing machine driving method according to another embodiment of the present invention.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this process, the sizes, shapes, and the like of the constituent elements shown in the drawings may be exaggerated for clarity and convenience of description. Also, terms specifically defined in consideration of the structure and action of the present invention may be changed according to the intention or practice of a user or an operator. The definition of such terms shall be based on the content of the present specification throughout.
Fig. 1 is a sectional view of a washing machine in accordance with a first embodiment of the present invention, fig. 2 is a sectional view of a driving apparatus of a washing machine in accordance with a first embodiment of the present invention, and fig. 3 is an enlarged sectional view of a half of a motor of a washing machine in accordance with a first embodiment of the present invention.
Referring to fig. 1 to 3, a washing machine according to a first embodiment of the present invention includes: a housing 100 for forming an outer shape; an outer tub 110 disposed inside the casing 100 to receive washing water; a washing tub 120 rotatably disposed inside the outer tub 110 for performing washing and dehydration; a pulsator 130 rotatably disposed inside the washing tub 120, for forming a washing water current; and a washing machine driving device 140 provided at a lower portion of the washing tub 120, and simultaneously or selectively driving the washing tub 120 and the pulsator 130.
As shown in fig. 2 and 3, the washing machine driving apparatus 140 includes: outer shafts 20, 22 connected to the washing tub 120; inner shafts 30 and 32 rotatably disposed inside the outer shafts 20 and 22 and connected to the pulsator 130; an outer rotor 50 connected with the outer shafts 20, 22; an inner rotor 40 connected to the inner shafts 30 and 32; a stator 60 disposed with a gap between the inner rotor 40 and the outer rotor 50; and a planetary gear arrangement 70.
The planetary gear arrangement 70 may increase torque by decreasing the rotational speed of one of the inner shafts 30, 32 and the outer shafts 20, 22.
In the present embodiment, the planetary gear device 70 is provided to the inner shafts 30, 32 to reduce the rotational speed of the inner shafts 30, 32, thereby increasing the torque.
The outer shafts 20, 22 include: a first outer shaft 20 connected to the outer rotor 50 in a cylindrical shape so that the inner shafts 30 and 32 pass therethrough; and a second outer shaft 22 connected to the washing tub 120.
Further, the inner shafts 30, 32 include: a first inner shaft 30 connected with the inner rotor 40; and a second inner shaft 32 connected with the pulsator 130.
As shown in fig. 4, the planetary gear device 70 includes: a ring gear 72 for connecting between the first outer shaft 20 and the second outer shaft 22; a sun gear 74 integrally connected to the first inner shaft 30; a plurality of planet gears 78 that mesh with the outer face of the sun gear 74 and the inner face of the ring gear 72; and a carrier 76 that supports the planetary gears 78 in such a manner that the planetary gears 78 can rotate, and the output is connected to the second inner shaft 32.
In this planetary gear device 70, the first outer shaft 20 and the second outer shaft 22 are connected by the ring gear 72, and the rotational speed of the first outer shaft 20 is directly transmitted to the second outer shaft 22. Thus, the rotational speeds of the first outer shaft 20 and the second outer shaft 22 are the same.
The first inner shaft 30 is formed integrally with the sun gear 74, the second inner shaft 32 is connected to a carrier 76 by spline coupling or the like, and the carrier 76 is rotatably supported by the center of a planetary gear 78, whereby the rotational speed of the first inner shaft 30 is reduced and transmitted to the second inner shaft 32.
As described above, the inner shafts 30 and 32 are connected by the planetary gear device 70, and the rotational speed of the inner rotor 40 is reduced to be transmitted to the pulsator 130, so that the torque of the pulsator 130 can be increased, thereby being applicable to a large capacity washing machine.
A first sleeve bearing 80 and a second sleeve bearing 82 in a cylindrical shape are provided between the outer peripheral surface of the first inner shaft 30 and the inner peripheral surface of the first outer shaft 20, whereby the first inner shaft 30 is supported so as to be rotatable.
A third sleeve bearing 84 and a fourth sleeve bearing 86 are provided on the inner surfaces of the upper end and the lower end of the second outer shaft 22, whereby the second inner shaft 32 is rotatably supported by the second inner shaft 32.
A first connection portion 90 connected to the outer rotor support body 56 of the outer rotor 50 is formed on the outer surface of the first outer shaft 20, and a second connection portion 92 connected to the inner rotor support body 46 of the inner rotor 40 is formed at the lower end of the first inner shaft 30.
The first and second connection parts 90 and 92 are coupled by protruding serrations (Serration), spline coupling, or key grooves formed on the outer surfaces of the first outer shaft 20 and the first inner shaft 30.
A first fixing nut 34 for preventing the outer rotor support body 56 from being separated from the first outer shaft 20 is screwed to a lower end of the first outer shaft 20, and a second fixing nut 36 for preventing the inner rotor support body 46 of the inner rotor 40 from being separated from the lower end of the first inner shaft 30.
A third connection part 94 connected to the washing tub 120 is formed on the upper end outer surface of the second outer shaft 22, and a fourth connection part 96 connected to the pulsator 130 is formed on the upper end outer surface of the second inner shaft 32.
The third and fourth connecting portions 94 and 96 are coupled by protruding serrations (Serration), spline coupling, or key grooves formed on the outer surfaces of the second outer shaft 22 and the second inner shaft 32.
A first seal 220 for preventing the washing water from leaking is installed between the second outer shaft 22 and the second inner shaft 32, and a second seal 210 for preventing the washing water from leaking is installed between the second outer shaft 22 and the bearing housing 10.
The first bearing is disposed on an outer surface of the first outer shaft 20, and the second bearing 28 is disposed on an outer surface of the second outer shaft 22, so that the outer shafts 20, 22 are supported rotatably in one direction.
The first bearing 26 is disposed in the first bearing housing 102 and the second bearing 28 is disposed in the second bearing housing 10.
The first bearing housing 102 includes: a first bearing installation part 104 made of a metal material for installing the first bearing 26; a cover 106 extending outward from the first bearing installation portion 104, having a cylindrical shape, disposed so as to surround the outer surface of the planetary gear device 70 with a fixed gap therebetween, and protecting the planetary gear device; and a flat plate portion 108 extending outward from the upper end of the cover portion 106 to form a circular plate shape for fixing the stator 60 and the outer tub 110.
The flat plate portion 108 is coupled to the second bearing housing along the circumferential direction by a plurality of bolts 250.
The second bearing housing 10 includes: a second bearing installation part 12 made of metal material for installing a second bearing 28; a second seal fixing portion 14 extending outward from the second bearing installation portion 12 and fixing the second seal 210; a connecting portion 16 bent downward from the second packing fixing portion 14 and having a cylindrical shape; and a flat plate portion 18 extending outward from the lower end of the connecting portion 16 and fixed to the outer groove 110.
The flat plate portion 18 is coupled to the flat plate portion 108 of the first bearing housing by bolts 250, and is fixed to the stator support 270 and the outer groove 110 by bolts 260.
As shown in fig. 4, the inner rotor 40 includes: a first magnet 42 disposed with a predetermined gap in an inner surface of the stator 60; a first back yoke 44 disposed on the back surface of the first magnet 42; and an inner rotor support 46 integrally formed with the first magnet 42 and the first back yoke 44 by insert molding.
The inner surface of the inner rotor support 46 is connected to the second connection portion 92 of the first inner shaft 30, and the first magnet 42 and the first back yoke 44 are fixed to the outer surface of the inner rotor support 46.
Therefore, when the inner rotor 40 rotates, the inner shafts 30 and 32 rotate, and the pulsator 130 connected to the inner shafts 30 and 32 rotates.
Here, since the rotational torque of the pulsator 130 is not large, the pulsator can be sufficiently rotated by the torque of the inner rotor 40.
Further, the outer rotor 50 includes: a second magnet 52 disposed with a predetermined gap between outer surfaces of the stators 60; a second back yoke 54 disposed on the back surface of the second magnet 52; and an outer rotor support 56 formed integrally with the second magnet 52 and the second back yoke 54 by insert molding.
The outer rotor support 56 is connected to the first connection portion 90 of the first outer shaft 20 on the inner surface thereof and rotates together with the first outer shaft 20, and the second magnet 52 and the second back yoke 54 are fixed to the outer surface of the outer rotor support 56.
Therefore, when the outer rotor 50 rotates, the outer shafts 20 and 22 rotate, and the washing tub 120 connected to the outer shafts 20 and 22 rotates.
In the washing machine motor of the present invention, the outer rotor 50 having a large driving torque is connected to the washing tub 120 which needs to be driven with a large torque without a reduction in speed by the ring gear 72 connected between the first outer shaft 20 and the second outer shaft 22.
In the washing machine motor of the present invention, the rotation speed of the inner rotor 40 is reduced by the sun gear 74, the planetary gear 78, and the carrier 76 of the planetary gear device 70 connecting the first inner shaft 30 and the second inner shaft 32, and thereby the inner rotor 40 having a small driving torque is connected to the pulsator 130 which can be driven with a small torque.
As shown in fig. 5 and 6, the stator 60 includes: a plurality of divided stator cores 62 arranged in a radial shape; a bobbin 64 as a non-magnetic body surrounding the outer peripheral surface of the stator core 62; a first coil 66 wound around one side of the stator core 62; a second coil 68 wound around the other side of the stator core 62; and a stator supporter 270 fixed to the outer slot 110 for arranging the stator cores 62 in a ring shape.
After the stator cores 62 are arranged at the stator support 270 at predetermined intervals in the circumferential direction in a mold, the stator support 270 and the stator cores 62 are integrated by insert injection.
That is, for example, the stator support 270 is formed by injection molding a bulk molding compound of bmc (bulk molding compound) such as polyester fiber as an injection material and molding the stator support 270 by insert injection, and at this time, the plurality of stator cores 62 are arranged in a mold at predetermined intervals in the circumferential direction and are integrated with the stator support 270.
The stator supporter 270 may be applied to a structure in which the stator supporter 270 is screw-coupled after the stator supporter 270 and the stator core 62 are separately manufactured, in addition to a structure in which the stator supporter 270 is integrally formed with the stator core by insert injection molding.
As shown in fig. 6 and 7, the stator core 62 includes: a first tooth 310 for winding the first coil 66; a second tooth portion 312 formed on the opposite side of the first tooth portion 310 for winding the second coil 68; a dividing portion 314 for dividing between the first tooth portion 310 and the second tooth portion 312; and coupling portions 320 and 322 formed at both side end portions of the dividing portion 314 in the lateral direction for coupling the split stator cores 62 to each other.
However, since the first drive signal is applied to the first coil 66 and the second drive signal is applied to the second coil 68, when the first drive signal is applied only to the first coil 66, only the inner rotor 40 is rotated, when the second drive signal is applied only to the second coil 68, only the outer rotor 50 is rotated, and when the first drive signal and the second drive signal are simultaneously applied to the first coil 66 and the second coil 68, the inner rotor 40 and the outer rotor 50 are simultaneously rotated.
A first flange 316 facing the first magnet 44 is formed at a tip end portion of the first tooth 310, and a second flange 318 facing the second magnet 54 is formed at a tip end portion of the second tooth 312.
The first flange 316 and the second flange 318 are formed to have an inward curved surface and an outward curved surface with 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. Accordingly, the roundness of the inner and outer circumferential surfaces of the stator core 62 is improved, so that the inner and outer circumferential surfaces of the stator 60 can be brought close to the first and second magnets 42 and 52, and a predetermined magnetic gap (gap) can be maintained.
For example, in the coupling portions 320 and 322, coupling protrusions 322 are formed to protrude from one side of the partition 314, coupling grooves 320 for engaging the coupling protrusions 322 are formed in the other side of the partition 314, and when the coupling portions are assembled by engaging the coupling protrusions 322 in the coupling grooves 320, the stator cores 62 are radially arranged and directly coupled to each other.
In addition to the above-described structure, the coupling portion may be formed by forming pin holes at both ends of the divided portions of the stator cores, and fastening pin members between the pin holes of the two stator cores in a state where the divided stator cores are brought into contact with each other to connect the stator cores, or may be formed by caulking a plurality of stator cores by using caulking members in a state where the stator cores are brought into contact with each other.
In addition to the split core form described above, the stator core can be applied to an integrated barrel core form. That is, the stator core may be applied to a structure in which the stator core is formed in a ring shape as one body, or may be applied to a structure in which the stator core is formed in an arc shape having a predetermined angle, and the cores in the arc shape are assembled with each other to form a ring shape.
In the washing machine motor of the present invention as described above, since the first magnetic circuit L1 is formed between the inner rotor 40 and one side of the stator 60 around which the first coil 66 is wound and the second magnetic circuit L2 is formed between the outer rotor 50 and the other side of the stator 60 around which the second coil 68 is wound, a pair of magnetic circuits independent of each other are formed, and therefore, the inner rotor 40 and the outer rotor 50 can be driven independently of each other.
Specifically, the first magnetic path L1 passes through the N-pole first magnet 42, the first tooth 310 around which the first coil 66 is wound, the inner portion of the dividing portion 314, and the S-pole first magnet 42 and the first back yoke 44 adjacent to the N-pole first magnetic path 42.
The second magnetic path L2 passes through the second magnet 52 of the N-pole, the second tooth 312 around which the second coil 68 is wound, the outer portion of the dividing portion 314, the second magnet 54 of the S-pole, and the second back yoke 54, facing the second magnet 52 of the N-pole.
Fig. 8 is a sectional view of a driving apparatus of a washing machine in accordance with a second embodiment of the present invention.
As shown in fig. 8, the driving apparatus of the washing machine of the second embodiment includes: an outer shaft 610 connected with the washing tub 120; an inner shaft 620 rotatably disposed inside the outer shaft 610 and connected to the pulsator 130; an inner rotor 640 connected with the outer shaft 610; an outer rotor 630 connected with the inner shaft 620; a stator 600 disposed between the inner rotor 640 and the outer rotor 630 with a gap therebetween; and a planetary gear device 670 provided on the inner shaft 620 and increasing torque by reducing the rotation speed of the inner shaft 620.
As described above, in the driving apparatus of the washing machine of the second embodiment, the washing tub 120 and the inner rotor 640 are connected through the outer shaft 610, the pulsator 130 and the outer rotor 630 are connected through the inner shaft 620, the rotational force of the inner rotor 640 is transmitted to the washing tub 120 without being decelerated, and the rotational force of the outer rotor 630 is transmitted to the pulsator 130 without being decelerated.
The washing machine driving apparatus of the second embodiment, like the first embodiment, independently drives the outer rotor 630 and the inner rotor 640 through the stator 660 to apply a rotational force to the pulsator 130 and the washing tub 120 through the planetary gear 670, thereby functioning as the same driving apparatus. Finally, one or both of the pulsator 130 and the washing tub 120 may be driven by independently driving the pulsator 130 and the washing tub 120, respectively, and the rotation directions may be the same or opposite.
Also, the washing machine driving apparatus of the second embodiment may be applied to a motor without a planetary gear device.
Fig. 9 is a sectional view of a driving apparatus according to a third embodiment of the present invention.
The motor of the third embodiment has the same structure as the washing machine driving device described in the first embodiment except that there is no planetary gear device.
That is, as shown in fig. 9, in the driving apparatus of the third embodiment, the outer shaft 710 directly connects the washing tub 120 and the outer rotor 730, the rotational force of the outer rotor 730 is transmitted to the washing tub 120, the pulsator 130 and the inner rotor 740 are directly connected by the inner shaft 720, and the rotational force of the inner rotor 720 is transmitted to the pulsator 130.
The motor of the third embodiment, like the motors of the first and second embodiments, directly applies a rotational force to the pulsator 130 and the washing tub 120 by independently driving the outer rotor 730 and the inner rotor 740 through the stator 760, thereby functioning as a driving means. Finally, one or both of the pulsator 130 and the washing tub 120 are driven by independently driving the pulsator 130 and the washing tub 120, and the rotation directions may be the same or opposite.
Fig. 10 is a circuit block diagram of a control device of a washing machine according to an embodiment of the present invention, and fig. 11 is a flowchart of a driving method of a washing machine according to an embodiment of the present invention.
In the control apparatus of the washing machine according to the embodiment of the present invention, the input side of the control unit 500 is connected to the water level detection sensor 510, the water supply detection sensor 520, and the drain detection sensor 530, and the output side is connected to the water supply valve 540, the drain valve 550, the first coil (inner rotor 40), and the second coil 68 (outer rotor 50).
The first coils 66 (inner rotor 40) are connected by a first driver (not shown) that generates a first drive signal, and the second coils 68 (outer rotor 50) are connected by a second driver (not shown) that generates a second drive signal.
For example, the control unit 500 applies control signals of a Pulse Width Modulation (PWM) method to the first and second drivers based on the rotational positions of the outer rotor 50 and the inner rotor 40 detected by first and second rotor position detection sensors (not shown) formed of a Hall sensor (Hall sensor), respectively, and the first and second drivers receive the control signals and apply U, V, W three-phase outputs to U, V, W three-phase coils of the first and second coils 66 and 68, thereby rotationally driving the outer rotor 50 and the inner rotor 40.
Hereinafter, a washing machine driving apparatus and a driving method using the same according to the present invention will be described with reference to fig. 10 and 11.
In the case of performing the washing or rinsing stroke, the control unit 500 drives the inverters of the first and second drivers according to the washing or rinsing stroke.
Therefore, the first and second drivers generate three-phase alternating current, and the generated three-phase alternating current is selectively or independently applied to the first and second coils 66 and 68 of the stator 60. Thus, the outputs of the inner rotor 40 and the outer rotor 50 driven by the first coil 66 and the second coil 68 of the stator 60 provide rotational forces having high-speed and low-torque characteristics, respectively.
First, when a washing or rinsing stroke is performed, when three-phase ac power is applied from the first driver to the first coil 66 of the inner stator, the inner rotor 40 rotates, and the high-speed, low-torque characteristic of the inner rotor 40 is transmitted to the first inner shaft 30 connected to the inner rotor 40. That is, the output of the inner rotor 40 is applied as a first input to the sun gear 74 of the planetary gear arrangement 70 through the first inner shaft 30 as a first rotational speed.
In this case, if the outer rotor 50 is fixed by the electronic brake, the outer shaft 20 connected with the outer rotor 50 is fixed, and the ring gear 72 connected with the outer shaft 20 is also fixed. Thus, when a first input of a first rotational speed (i.e., a high-speed, low-torque characteristic input) is input from the inner rotor 40 to the sun gear 74 to rotate the sun gear 74, the plurality of planetary gears 78 revolve along the inner peripheral portion of the ring gear 72 while rotating on their own axis, and the carrier 76 connected to the rotational axis of the planetary gears 78 also rotates in the same direction as the rotational direction of the inner rotor 40. In this case, the rotational speed of the carrier 76 is reduced by a speed ratio set according to the number of gear teeth of the sun gear and the ring gear, and a second rotational speed having a low-speed, large-torque characteristic is generated from the carrier 76.
As the carrier 76 of the planetary gear device 70 transmits the first output to the second inner shaft 32, the pulsator 130 receives a low-speed, large torque output to allow a washing or rinsing stroke to be performed with high efficiency.
The first input of the first rotating speed is reduced to the first output of the second rotating speed, and the torque is increased, thereby meeting the characteristics of low speed and large torque required in the washing process and the rinsing process.
When the above-described ring gear 72 is fixed, the speed change ratio (i.e., reduction ratio) obtained from the carrier 78 of the planetary gear device 70 is determined according to the following mathematical formula 1.
Mathematical formula 1
Wherein z isrNumber of teeth of ring gear, zsThe number of teeth of the sun gear.
For example, the method of applying the electronic brake to the outer rotor 50 and the ring gear 72 through the second driver may use a method of cutting off three-phase alternating current applied from the second driver to the second coils 68 of the stator 60 or short-circuiting the second coils 68 to stop the ring gear 72 connected with the outer rotor 50.
On the other hand, in the present invention, when the washing or rinsing stroke is performed, the amount of speed change (preferably, the amount of deceleration) of the first output of the planetary gear device 70 output through the carrier 76 can be controlled by controlling the ring gear 72 instead of fixing the ring gear 72 connected with the outer rotor 50 through the electronic brake.
That is, the output of the outer rotor 50 is applied as a second input to the ring gear 72 of the planetary gear arrangement 70 via the first outer shaft 20. A second input applied to the ring gear 72 may be used as a control input for controlling the amount of reduction of the first output of the planetary gear arrangement 70.
In this case, the rotational direction of the second input is opposite to the rotational direction of the first input, and in the case where the second rotational speed of the second input is 1/2 of the first rotational speed of the first input, the rotational direction of the first output of the planetary gear device 70 output through the carrier 76 is opposite to the rotational direction of the first input, and an output decelerated to 1/5 rotational speed is obtained. For example, in a planetary gear device of a sun gear input/planet carrier output structure, for example, in the case where the gear ratio (i.e., reduction ratio) of the planet carrier output is 5:1, when the first input is 250RPM and the second input is (-) 125RPM, the planet carrier input is (-) 50 RPM.
When the second rotational speed of the second input is lower than the first rotational speed of the first input, the rotational speed reduced by a reduction ratio (5:1) when the second rotational speed of the second input is lower than 0 is obtained by the electronic brake in the same rotational direction of the first output as the rotational direction of the first input. For example, when the first input is 800RPM and the second input is 200RPM, the planet carrier output is 320 RPM.
As described above, in the present invention, in order to perform the washing or rinsing stroke, the rotational force of the inner rotor 40 is used as a power source, and when the first output of the decelerated second rotational speed is obtained from the planetary gear device 70, the forward rotational speed of the outer rotor 50 is controlled by the electronic brake, or the rotational speed and torque of the first output are controlled by rotating the outer rotor 50 in the reverse direction or in the forward direction.
In the present invention, in the planetary gear device 70 of the sun gear input/planet carrier output structure, in the case where the rotation speed of the first input from the inner rotor 40 to the sun gear 74 is 1000RPM if the transmission gear ratio (i.e., the reduction ratio) of the output of the planet carrier 76 is 5:1, the rotation speed of the first output of the planetary gear device 70 is 200RPM when the ring gear 72 is in the normal state, the rotation speed of the first output of the planetary gear device 70 is about 208RPM if a rotation force of 10RPM is applied to the ring gear 72 in the forward direction, and the rotation speed of the first output of the planetary gear device 70 is about 190RPM if a rotation force of (-) 10RPM is applied to the ring gear 72 in the reverse direction.
As described above, for example, the amount of deceleration is finely controlled by increasing or decreasing the rotation speed of the first output of the planetary gear device 70 output through the carrier 76 by driving the outer rotor 50 in the reverse direction so that the ring gear 72 is not fixed and the minimum rotation of about 10RPM is achieved in the same direction as the rotation direction of the sun gear 74, or by driving the ring gear 72 in the reverse direction so that the reverse rotation of (-) 10RPM is achieved in the direction opposite to the rotation direction of the inner rotor 40.
That is, when a first input of a first rotational speed is input from the inner rotor 40 to the sun gear 74, the electronic brake is intermittently released, the ring gear 72 is not completely fixed, and when the ring gear 72 is rotated in the same direction as the rotational direction of the sun gear 74, the rotational speed of the first output of the planetary gear device 70 by the carrier 76 is greater than the second rotational speed in the case where the ring gear 72 is completely fixed, and conversely, when the ring gear 72 is rotated in the opposite direction to the rotational direction of the sun gear 74, the rotational speed of the first output of the planetary gear device 70 by the carrier 76 is less than the second rotational speed.
In the present invention, in order to perform the washing or rinsing stroke, when the torque is increased by decreasing the first input of the first rotational speed applied to the sun gear 74, it is preferable that the second rotational speed of the second input applied to the ring gear 72 by the control input is set to be smaller than the first rotational speed of the first input applied to the sun gear 74. In this case, the direction of the second input applied to the ring gear 72 may be the same as or opposite to the direction of the first input applied to the sun gear 74.
In this case, the direction of the second input applied to the ring gear 72 is opposite to the direction of the first input applied to the sun gear 74, and in the case where the second rotational speed of the second input applied to the ring gear 72 is 1/4 of the first rotational speed of the first input applied to the sun gear 74, the carrier output is 0RPM, that is, maximum deceleration is achieved.
For example, when the first input is 800RPM and the second input is (-) 200RPM, the planet carrier output is 0 RPM.
Further, the direction of the second input to the ring gear 72 is opposite to the direction of the first input to the sun gear 74, and when the second rotational speed of the second input to the ring gear 72 is 1/4 of the first rotational speed of the first input to the sun gear 74, the direction of the carrier output is the same as the direction of the first input to the sun gear 74, and a more reduced output can be obtained than when the ring gear 72 is in a fixed state.
For example, when the first input is 600RPM, the second input is (-) 87RPM, the planet carrier output is 50.4 RPM.
In particular, in the case where the direction of the second input applied to the ring gear 72 is opposite to the direction of the first input applied to the sun gear 74 and the second rotational speed of the second input applied to the ring gear 72 reaches 1/4, which is greater than the first rotational speed of the first input applied to the sun gear 74, and is less than 1/2, the rotational direction of the carrier output is opposite to the direction of the first input applied to the sun gear 74, and a further reduced output can be obtained than when the ring gear 72 is in a fixed state.
For example, when the first input is 1200RPM, the second input is (-) 400RPM, the planet carrier output is (-) 80 RPM.
On the other hand, when the dehydration stroke is executed, the planetary gear device 70 outputs an input of a high-speed, small-torque characteristic to the ring gear 72 to generate a second output satisfying the high-speed, small-torque characteristic required in the dehydration stroke through the carrier 78 without deceleration (torque conversion).
In this case, the planetary gear device 70 sets the sun gear 74 in a non-fixed state, that is, in a freely rotatable state, or rotates the sun gear 74 and the ring gear 72 in the same direction at the same rotational speed so as to receive the input of the high speed and small torque characteristic and output the input without reducing the speed (torque conversion).
Thus, the drive signal is applied from the second driver to the second coil 68 of the outer stator to rotate the outer rotor 50 (i.e., the ring gear 72) in the forward direction at 1000RPM, which is a high speed and low torque characteristic, and the drive signal is not applied to the first coil 66, so that the inner rotor 40 is freely rotated, or the inner rotor 40 is rotated in the forward direction at 1000RPM, which is the same as the outer rotor 50.
Finally, when only the rotational force of the high speed and small torque characteristic is transmitted to the ring gear 72 of the planetary gear device 70, or when the rotational force of the first input of the same high speed and small torque characteristic is transmitted to the ring gear 72 and the sun gear 74, the ring gear 72 or the planetary gear device 70 rotatably supported by the first sleeve bearing 80, the second sleeve bearing 82, the third sleeve bearing 84, and the fourth sleeve bearing 86 and the first bearing 26 and the second bearing 28 is rotated at 1000RPM without reduction in speed.
Therefore, the rotational force of the ring gear 72 with a high speed and small torque characteristic is transmitted to the washing tub 120 through the second outer shaft 22 to perform the dehydration stroke, or the rotational force of the high speed and small torque is transmitted to the washing tub 120 and the pulsator 130 through the second outer shaft 22 and the second inner shaft 32 to perform the dehydration stroke according to the entire rotation of the planetary gear device 70.
Finally, as the first input of the high-speed, small-torque characteristics of the outer rotor 50 and the inner rotor 40 is transmitted to the washing tub 120 and the pulsator 130 without speed reduction (torque conversion) in the planetary gear device 70 to perform the dehydration stroke, the dehydration stroke is performed with high efficiency.
The function of the planetary gear device of the present invention is summarized as follows.
First, the direction of input applied to the ring gear is opposite to the direction of input to the sun gear, and as the rotational speed of the ring gear is greater than the rotational speed of the sun gear, the direction of output of the carrier is the same as the direction of output of the ring gear, and depends from the rotational speed of the ring gear, and is proportional to the rotational speed of the ring gear, thereby obtaining a rotational speed faster than the rotational speed of the sun gear, and in the case where the rotational speed of the ring gear is less than the rotational speed of the sun gear, the direction of rotational speed of the carrier is the same as the direction of input to the ring gear, and is proportional to the rotational speed of the ring gear, thereby obtaining.
The direction of input to the ring gear is the same as the direction of input to the sun gear, and as the rotational speed of the ring gear is greater than the rotational speed of the sun gear, the direction of output of the carrier is the same as the direction of output of the ring gear, and depends on the rotational speed of the ring gear, and is proportional to the rotational speed of the ring gear, thereby obtaining a rotational speed greater than the rotational speed of the sun gear.
In the present invention, the ring gear 72 of the planetary gear device 70 is inserted between the first outer shaft 20 and the second outer shaft 22 and connected to each other, and the first bearing 26 supporting the first outer shaft 20 and the second bearing 28 supporting the second outer shaft 22 are constituted by bearings that are rotatable in both directions.
Finally, in the present invention, the planetary gear device 70 is rotatable in both directions, and this structure has a support structure different from a support structure that maintains a state of fixing the planetary gear device or rotates only in one direction for a dehydration stroke in a conventional electric washing machine.
In the present invention, the planetary gear device 70 is bi-directionally rotatable, and thus, the washing tub 120 and the pulsator 130 are simultaneously or selectively rotated in the same and opposite directions by the motor of the dual power washing machine composed of the dual rotors and the dual stators to form washing water flows of various types.
In the present invention, since the planetary gear device 70 is not in a restricted state, when laundry of a predetermined amount or more is put into the washing tub 120, the pulsator 130 receives a load, and the carrier 76 connected to the pulsator 130 functions as a brake device. Therefore, when the rotational force of the inner rotor 40 is input to the sun gear 74, the rotational force is output to the ring gear 72, and the washing tub 120 and the outer rotor 50 connected to the ring gear 72 rotate in the direction opposite to the rotational direction of the inner rotor 40, that is, in the counterclockwise direction (CCW).
However, when there is no laundry in the washing tub 120 or the laundry is less than a set value (when the pulsator 130 has no load or a small load), the ring gear 72 of the planetary gear device 70 is connected to the input and output outer shafts 20 and 22 and the washing tub 120, and thus functions as a brake, whereby the rotational force of the inner rotor 40 is input to the sun gear 74 and output to the carrier 76. Accordingly, the pulsator 130 connected to the carrier 76 rotates at a decelerated speed.
The control unit 500 maintains various washing courses in the storage device, all of which basically include a washing stroke, a rinsing stroke, and a dehydrating stroke, and includes a water supply stroke and a water discharge stroke before and after each stroke, and repeatedly performs at least one of the washing stroke, the rinsing stroke, and the dehydrating stroke a plurality of times according to the washing courses.
Referring to fig. 11, the driving method of the washing machine according to the present invention substantially sequentially performs a washing stroke, an intermediate dehydration stroke, a rinsing stroke, and a dehydration stroke.
First, the power of the washing machine is turned ON to supply water, and if the water supply is completed, a washing stroke is performed (step S10). Then, when the washing time reaches the set time and the washing stroke is completed, the middle dehydrating stroke is performed (step S20).
In the intermediate dehydration stroke, the washing water contained in the washing tub 120 is first discharged (step S30).
When the water is drained, it is determined whether the amount of water drained reaches a set value (step S40). Wherein the set value can be set by the drainage time or the water level of the washing tank. That is, when the washing water starts to be drained, the drain detection sensor 530 applies a signal to the control unit 500 by detecting a drain state. Therefore, the control unit 500 counts the drain time to determine whether the drain time reaches the set time, or determines whether the water level of the washing tub 120 reaches the set water level according to a signal applied from the water level detection sensor 510 provided at the washing tub 120.
If the amount of water discharged reaches the set value, one or both of the pulsator 130 and the washing tub 120 are rotated while water supply is performed (step S50, step S60). In the case of rotating both the pulsator 130 and the washing tub 120, the pulsator 130 and the washing tub 120 may be rotated in the same direction or in opposite directions, and preferably, the pulsator 130 and the washing tub 120 are rotated in opposite directions in order to generate a vortex.
Therefore, new water is supplied to washing tub 120 and drained, and at least one of pulsator 130 and washing tub 120 is driven to remove residue remaining in the laundry. Thereby improving the cleaning degree of the washings.
In this case, the amount of water drained is the amount of washing water drained from washing tub 120, and if water supply and rinsing are performed in a state where too much washing water remains in washing tub 120, the cleaning force is reduced, and if pulsator 130 and washing tub 120 are rotated in a state where too much washing water is drained from washing tub 120, motor 140 is adversely affected and the laundry may be damaged, and therefore, the amount of water drained is set through various experiments. Therefore, the water discharge amount is preferably 20 to 50% of the water level of the washing tub.
When the amount of water discharged reaches a set value, only one of the pulsator and the washing tub may be rotated, or both may be rotated, and the rotation and the stop may be repeated by intermittent rotation.
Further, water supply may be performed simultaneously with the start of water discharge, and the processes of water supply, water supply stop, water re-supply, and the like may be repeated according to the amount of water discharged.
Then, it is determined whether the water supply time reaches the set time (step S70). That is, the control unit 500 counts the water supply time according to the signal applied from the water supply detection sensor 520 and determines whether the water supply time reaches the set time.
If it is determined that the water supply time reaches the set time, the pulsator 130 and the washing tub 120 are stopped at the same time as the water supply is stopped, and then the water is drained (step S80). That is, the control unit 500 activates the water supply valve 540 to stop the supply of water, turns off the driving signals to the first and second coils 66 and 68 to stop the inner and outer rotors 40 and 50, stops the pulsator and the washing tub, and activates the drain valve 550 to drain water.
When the drainage of the washing tub 120 is completed, the main dewatering is performed (step S90).
When the main dehydration is completed, the rinsing process is performed (step S100).
Then, when the rinsing stroke is completed, the power is turned OFF (OFF) to complete the washing after the spinning stroke is performed by the same method as the above-described method (step S110).
Fig. 12 is a flowchart of a washing machine driving method according to another embodiment of the present invention.
The washing machine driving method according to another embodiment of the present invention sequentially performs a washing stroke, an intermediate dehydration stroke, a rinsing stroke, and a dehydration stroke.
First, the washing machine is powered on to supply water, and when the water supply is completed, a washing stroke is executed (step S10). When the washing time reaches the set time and the washing stroke is completed, the intermediate dehydration stroke is performed (step S20, step S30).
The intermediate dehydrating stroke is the same as that described in the above-described first embodiment, and thus a detailed description thereof will be omitted.
If the intermediate dehydration stroke is completed, the rinsing stroke is divided into a first time and a second time.
In the first rinsing cycle, water is supplied to washing tub 120, and it is determined whether the amount of water supplied to washing tub 120 reaches a set value (step S40, step S50). Wherein the set value can be set by a water supply time or a water level of the washing tub.
In the determination of step S50, if the set value is set according to the water supply time, the control unit 500 opens the water supply valve 540 to supply water to the washing tub, and when water supply is started, the water supply detection sensor 520 detects this and applies a signal to the control unit 500. Therefore, the control unit 500 counts the water supply time to determine whether the water supply time reaches the set time.
In case that the set value is set by the water supply time, the control unit determines whether the water level of the washing tub 120 reaches the set water level according to a signal applied from the water level detection sensor 510 provided at the washing tub 120.
When the water supply amount of the washing tub 120 reaches the set value, one or both of the pulsator 130 and the washing tub 120 are rotated while water is drained (step S50, step S60). That is, the control unit 500 activates the drain valve 550 to drain water, and drives at least one of the outer rotor 50 and the inner rotor 40 to rotate one or both of the pulsator 130 and the washing tub 120.
When the water supply amount of the washing tub 120 reaches a set value, only one of the pulsator and the washing tub may be rotated, or both may be rotated, and the rotation and the stop may be repeated by intermittent rotation.
Then, it is determined whether the drain time reaches the set time (step S80). That is, the control unit 500 counts the drainage time according to the signal applied from the drainage detection sensor 530 and determines whether the drainage time reaches the set time.
If it is determined that the drain time reaches the set time, the drain is stopped and the second rinsing stroke is executed (step S90, step S100). Wherein the second rinsing process is performed at least once.
When the second rinsing stroke is completed, the dehydrating stroke is performed (step S110). The dehydration step is performed in the same manner as the dehydration step described in the first embodiment, and a normal dehydration step may be performed.
As described above, in the first rinsing stroke of the washing machine, when water is supplied to the washing tub 120, if the amount of supplied water reaches a set value, at least one of the pulsator and the washing tub is driven to remove residues remaining on the laundry while draining the water, thereby improving the washing quality of the laundry, greatly reducing the number of rinsing strokes, saving water, and shortening the washing time.
While the present invention has been described with reference to the preferred embodiments, it is to be understood that the present invention is not limited to the embodiments described above, and various changes and modifications may be made by one skilled in the art without departing from the spirit of the present invention.
Industrial applicability
The present invention is applicable to a washing machine and a washing machine driving method, in which, in an intermediate dehydration process, when washing water contained in a washing tub is discharged, one or both of the washing tub and a pulsator are driven while supplying water or the washing tub is repeatedly rotated and stopped to remove washing residues, so that a washing degree can be improved.
Claims (7)
1. A washing machine is characterized in that a washing machine is provided,
the method comprises the following steps:
the washing machine motor of the double-rotor double-stator mode has an inner rotor and an outer rotor which can be independently controlled by double stators, and the inner rotor output and the outer rotor output are selectively generated;
a first inner shaft for transmitting the output of the inner rotor;
a first outer shaft rotatably coupled to an outer periphery of the first inner shaft and transmitting an output of the outer rotor;
a planetary gear device which generates a first output reduced in speed from a carrier when an inner rotor output is applied to a sun gear via the first inner axial direction, and generates an outer rotor output as a second output from a ring gear without reduction when an outer rotor output is applied to the ring gear via the first outer axial direction,
a second inner shaft for transmitting the decelerated first output generated from the carrier;
a second outer shaft rotatably coupled to an outer periphery of the second inner shaft and transmitting a second output generated from the ring gear;
a pulsator connected to the second inner shaft and driven by a first output;
and a washing tank connected to the second outer shaft and driven by the second output,
in the dewatering process, when the water in the washing tank is drained, one of the washing tank and the pulsator is driven to rotate and stop repeatedly while supplying water, or the washing tank and the pulsator are driven to rotate and stop repeatedly in the same direction or in opposite directions when the water in the washing tank reaches a set value set to be 20-50% of the water level in the washing tank.
2. The washing machine as claimed in claim 1, wherein the outer rotor performs a brake action using an electronic brake or by rotating in the same direction as the inner rotor, thereby transmitting the rotational force of the inner rotor to the pulsator.
3. A washing machine is characterized in that a washing machine is provided,
the method comprises the following steps:
the washing machine motor of the double-rotor double-stator mode has an inner rotor and an outer rotor which can be independently controlled by double stators, and the inner rotor output and the outer rotor output are selectively generated;
a first inner shaft for transmitting the output of the outer rotor;
a first outer shaft rotatably coupled to an outer periphery of the first inner shaft and transmitting an output of the inner rotor;
a planetary gear device which generates a first output reduced in speed from a carrier when an inner rotor output is applied to a sun gear via the first inner axial direction, and generates an outer rotor output as a second output from a ring gear without reduction when an outer rotor output is applied to the ring gear via the first outer axial direction,
a second inner shaft for transmitting the decelerated first output generated from the carrier;
a second outer shaft rotatably coupled to an outer periphery of the second inner shaft and transmitting a second output generated from the ring gear;
a pulsator connected to the second inner shaft and driven by a first output; and
a washing tank connected with the second outer shaft and driven by the second output,
in the dewatering process, when the water in the washing tank is drained, one of the washing tank and the pulsator is driven to rotate and stop repeatedly while supplying water, or the washing tank and the pulsator are driven to rotate and stop repeatedly in the same direction or in opposite directions when the water in the washing tank reaches a set value set to be 20-50% of the water level in the washing tank.
4. A washing machine according to claim 3, wherein the outer rotor performs a brake action using an electronic brake or by rotating in the same direction as the inner rotor, thereby transmitting the rotational force of the inner rotor to the pulsator.
5. A driving method of a washing machine, characterized in that,
the washing machine according to claim 1 or 3 sequentially performing a washing stroke, an intermediate dehydration stroke, a rinsing stroke, and a dehydration stroke,
the intermediate dehydration stroke and the dehydration stroke respectively include: a step of supplying water and driving the inner rotor and the outer rotor to rotate one or both of the washing tank and the pulsator when the water discharged from the washing tank reaches a first set value set to 20 to 50% of the water level of the washing tank,
the rinsing stroke includes:
a first rinsing step of supplying water to the washing tub after the middle dehydration stroke, and driving the inner rotor and the outer rotor to rotate one or both of the pulsator and the washing tub while discharging water, if the amount of water supplied to the washing tub reaches a second set value; and
and a second rinsing step, wherein if the first rinsing process is completed, more than one formal rinsing process is executed.
6. The driving method of a washing machine according to claim 5, wherein the intermediate dehydrating stroke and the dehydrating stroke respectively comprise:
an intermediate dewatering step of driving the inner rotor and the outer rotor to rotate at least one or two of the pulsator and the washing tub while supplying water if the washing tub drainage time reaches a set time;
stopping the pulsator and the washing tub while stopping the water supply if the water supply time reaches a set time; and
and a formal dehydration step, wherein dehydration is carried out when the drainage of the washing tank is finished.
7. The driving method of a washing machine according to claim 5, wherein the intermediate dehydrating stroke and the dehydrating stroke respectively comprise:
when the washing tank drains water, if the drained water amount reaches a first set value, one of the washing tank and the pulsator is driven to rotate and stop repeatedly while water is supplied,
or, when the water discharge amount reaches the first set value, the washing tank and the pulsator are driven to rotate and stop repeatedly in the same direction or in opposite directions while supplying water.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140160981A KR101628202B1 (en) | 2014-11-18 | 2014-11-18 | Washing machine and driving method thereof |
| KR10-2014-0160981 | 2014-11-18 | ||
| PCT/KR2015/012431 WO2016080770A1 (en) | 2014-11-18 | 2015-11-18 | Washing machine and method for operating washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107002338A CN107002338A (en) | 2017-08-01 |
| CN107002338B true CN107002338B (en) | 2020-02-07 |
Family
ID=56014220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580061716.5A Active CN107002338B (en) | 2014-11-18 | 2015-11-18 | Washing machine and washing machine driving method |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101628202B1 (en) |
| CN (1) | CN107002338B (en) |
| WO (1) | WO2016080770A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11255036B2 (en) | 2016-07-28 | 2022-02-22 | Samsung Electronics Co., Ltd. | Washing machine |
| JP2018086232A (en) * | 2016-07-28 | 2018-06-07 | 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． | Washing machine |
| CN106712418B (en) * | 2017-01-18 | 2019-05-24 | 威灵（芜湖）电机制造有限公司 | Without mechanical differential contrarotation power device |
| EP3701075B1 (en) | 2017-12-20 | 2022-02-16 | Samsung Electronics Co., Ltd. | Washing machine and motor |
| JP7113614B2 (en) * | 2017-12-20 | 2022-08-05 | 三星電子株式会社 | washing machine and motor |
| CN113337997B (en) * | 2021-06-01 | 2023-05-26 | 海信冰箱有限公司 | Soft washing method of washing machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476231A (en) * | 2007-12-31 | 2009-07-08 | Lg电子株式会社 | Method for controlling washing machine |
| CN202007332U (en) * | 2011-03-16 | 2011-10-12 | 蒋全林 | Laundry machine |
| CN102877269A (en) * | 2012-10-22 | 2013-01-16 | 安徽聚隆传动科技股份有限公司 | Direct-driven transmission reducing mechanism of motor of washing machine |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0133462B1 (en) * | 1994-06-21 | 1998-04-23 | 이헌조 | Rinsing method of a washing machine |
| JP3815408B2 (en) * | 2002-08-28 | 2006-08-30 | 松下電器産業株式会社 | How to wash the washing machine |
| KR100548310B1 (en) | 2004-07-13 | 2006-02-02 | 엘지전자 주식회사 | Washing machine with clutch spring |
| KR20070081880A (en) * | 2006-02-14 | 2007-08-20 | 엘지전자 주식회사 | Tub clean method of washing machine |
| KR100890891B1 (en) * | 2007-04-10 | 2009-04-02 | 주식회사 아모텍 | Driving device for washing machine and full automatic washing machine using the same |
| CN102691192B (en) * | 2011-03-23 | 2014-04-02 | 松下家电研究开发（杭州）有限公司 | Washing control method of full-automatic impeller washing machine |
| KR101814397B1 (en) * | 2011-04-11 | 2018-01-04 | 엘지전자 주식회사 | Washing apparatus |
| KR101576146B1 (en) * | 2012-12-18 | 2015-12-09 | 주식회사 아모텍 | Driving apparatus and washing machine |
-
2014
- 2014-11-18 KR KR1020140160981A patent/KR101628202B1/en active IP Right Grant
-
2015
- 2015-11-18 WO PCT/KR2015/012431 patent/WO2016080770A1/en active Application Filing
- 2015-11-18 CN CN201580061716.5A patent/CN107002338B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476231A (en) * | 2007-12-31 | 2009-07-08 | Lg电子株式会社 | Method for controlling washing machine |
| CN202007332U (en) * | 2011-03-16 | 2011-10-12 | 蒋全林 | Laundry machine |
| CN102877269A (en) * | 2012-10-22 | 2013-01-16 | 安徽聚隆传动科技股份有限公司 | Direct-driven transmission reducing mechanism of motor of washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101628202B1 (en) | 2016-06-09 |
| WO2016080770A1 (en) | 2016-05-26 |
| CN107002338A (en) | 2017-08-01 |
| KR20160059558A (en) | 2016-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107002338B (en) | Washing machine and washing machine driving method | |
| US11525204B2 (en) | Washing machine driving device, and washing machine and driving method using same | |
| US10214846B2 (en) | Washing machine driving device, washing machine having same, and control method therefor | |
| US6257027B1 (en) | Full-automatic washing machine with two drive motors | |
| CN113330155B (en) | Washing machine | |
| US20060042022A1 (en) | Washing machine and method for controlling the same | |
| CN107636223B (en) | Washing machine driving device and washing machine with same | |
| US6516485B1 (en) | Washing machine having a variable speed motor | |
| KR20060020265A (en) | Driving apparatus of washing machine and the controlling method of the apparats | |
| CN105579636A (en) | Washing machine motor and washing machine comprising same | |
| KR20190039018A (en) | washer | |
| KR100189141B1 (en) | Direct type washer and control method thereof | |
| JP2011200545A (en) | Laundry apparatus | |
| KR101612405B1 (en) | Washing machine and driving method thereof | |
| KR101639022B1 (en) | Rdum driving apparatus, drum washing machine having the same and driving method thereof | |
| KR101639023B1 (en) | Rdum driving apparatus, drum washing machine having the same and driving method thereof | |
| JP2009078056A (en) | Drum-type washing machine | |
| CN107849790B (en) | Washing machine driving device, washing machine with same and washing machine driving method | |
| KR20060020266A (en) | Washing machine and the controlling method of the machine | |
| JP2935691B2 (en) | Washing machine braking method and apparatus | |
| CN109072530B (en) | Washing machine driving device, washing machine with same and washing machine driving method | |
| JP2020124381A (en) | Drive unit for washing machine | |
| KR100504491B1 (en) | coil winding method of induction motor for washing machine and method for controlling the same | |
| KR20050045654A (en) | Direct type washing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |