• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    drive device for a direct drive type washing machine a drive device for a direct drive washing machine of the present invention includes a support element attached to the underside of a washing machine drum, an axis of rotation of the drying drum that rotates a drying drum being rotatably supported by the support element and connected to the drying drum, an axis of rotation of the pulsation element that rotates a pulsation element being rotatably arranged within the axis of rotation of the drying drum and connected to the pulsation element, an internal rotor connected to the rotation axis of the drying drum, an external rotor connected to the rotation axis of the pulsation element, and a double stator that is arranged in a space between the internal rotor external rotor and forms a magnetic circuit with the internal rotor and the external rotor respectively; and, in this way, it can reduce manufacturing costs, simplify manufacturing processes, and reduce the total height of the washing machine.
    公开号:BR112013031240B1
    申请号:R112013031240-8
    申请日:2012-06-05
    公开日:2020-12-15
    发明作者:Byung Soo Kim；Seong Cheol Park
    申请人:Amotech Co., Ltd；
    IPC主号:
    专利说明:

    Technical Field
    [001] The present invention relates to a drive device for a washing machine of the direct drive type in which a dewatering tube and a pulsator can be rotated in respectively different directions. Fundamental Technique
    [002] In general, as illustrated in figure 1, a washing machine of the direct drive type is configured to include: a wrap 100 forming an external appearance; a washing drum 102 which is supported inside the casing 100 and which accommodates the water; a dewatering drum 104 which is rotatably disposed within the washing drum 102 to perform washing and dewatering, a pulser 106 which is attached to the bottom of the dewatering drum 104 to form a water washing stream; and a drive device 110 which is arranged at the bottom of the casing 100 to drive the dewatering drum 104 and the pulsator 106.
    [003] A conventional drive device 110 for the direct drive type washing machine is configured to include: a axis of rotation of the dewatering drum 114 which is connected to the dewatering drum 104 to rotate the dewatering drum 104 and is formed in a hollow shape; a axis of rotation of the pulsator 112 which is connected to the pulsator 106 to rotate the pulsator 106 and which is arranged in a mutually concentric manner within the axis of rotation of the dewatering drum 114, a clutch device 130 which controls the rotations of the axis of rotation of the dehydration drum 114 and the axis of rotation of the pulsator 112, during the washing and dehydration process; a drive motor 150 that generates the torque of the rotation axis of the dewatering drum 114 and the rotation axis of the pulsator 112; and a clutch actuator 140 controlling the operation of the clutch device 130.
    [004] The function and operation of the washing machine of the conventional direct drive type as constructed above follows.
    [005] In a wash cycle, water is supplied into the wash drum 102, and if the drive motor 150 is driven, the axis of rotation of the pulsator 112 is rotated, and the pulsator 106 is rotated, to thereby forming a stream of water in the dewatering drum 104 in order to wash the laundry. Here, the axis of rotation of the dewatering drum 114 is restricted by the clutch device 130 and is therefore not rotated.
    [006] If the washing is completed, the water drain pump is activated to drain the water, and the dehydration drum 104 and the pulsator 106 are rotated at the same time, rinsing and dehydration are performed repeatedly.
    [007] Here, in case the dehydration drum 104 is made to rotate, the clutch actuator 140 is activated and then the clutch device 130 is activated, in order to distribute the torque of the drive motor 150 to both the axis of rotation of the dewatering drum 114 and the axis of rotation of the pulsator 112 at the same time.
    [008] However, the conventional direct drive type washing machine needs a clutch and a clutch actuator to activate the clutch in order to distribute the torque of the drive motor 150 to both or one of the axis of rotation of the dewatering drum 114 and the axis of rotation of the pulsator 112, in order to thereby increase the manufacturing costs and the structure to be complicated.
    [009] Additionally, in the case of a washing machine of the conventional direct drive type, the pulsator and the dewatering drum are not rotated in respectively different directions to thereby cause poor performance of the washing machine. description Technical problem
    [010] To solve the above problems or defects, it is an objective of the present invention to provide a drive device for a direct drive type washing machine in which an existing clutch and an existing clutch driver can be removed to, thereby reducing manufacturing costs and simplifying manufacturing processes and thereby reducing the overall weight of the washing machine.
    [011] It is another objective of the present invention to provide a drive device for a washing machine of the direct drive type in which a dewatering drum and a pulsator can be rotated in respectively different directions, in order to thus improve performance the washing machine.
    [012] The objectives of the present invention are not limited to the objectives described above, and other objectives and advantages of the present invention can be clearly appreciated from the description below by those skilled in the art in a technological field to which the present invention belongs. Technical Solution
    [013] In order to achieve the above and other objectives of the present invention, in accordance with an aspect of the present invention, a drive apparatus is provided for a washing machine of the direct drive type, the drive apparatus comprising: an element of support that is attached to the bottom side of a washing drum; a axis of rotation of the dehydration drum which is rotatably supported on the support element and which is connected to a dehydration drum to rotate the dehydration drum; an axis of rotation of the pulsator which is rotatably arranged within the axis of rotation of the dehydration drum and which is connected to a pulsator to rotate the pulsator; an internal rotor that is connected to the axis of rotation of the dehydration drum; an external rotor that is connected to the axis of rotation of the pulsator; and a double stator that is arranged with an air gap between the internal rotor and the external rotor, and which forms magnetic circuits with respect to the internal rotor and the external rotor, respectively.
    [014] Preferably, but not necessarily, the internal rotor comprises: a first rotor support that is connected to the axis of rotation of the dehydration drum; a first rear fork which is attached to an external surface of the rotor support; and a first magnet which is mounted on the external surface of the first rear fork and which is arranged to face the double stator with an air gap from an internal surface of the double stator.
    [015] Preferably, but not necessarily, the external rotor comprises: a second rotor holder that is connected to the axis of rotation of the pulsator; a second rear fork that is attached to the second rotor support; and a second magnet which is mounted on the inner surface of the second rear fork and which is arranged to face the double stator with an air gap on an external surface of the double stator.
    [016] Preferably, but not necessarily, the double stator comprises: a stator core having a plurality of internal stator teeth that are formed inwardly, and a plurality of external stator teeth that are formed outwardly; first coils-coils that are respectively wound around the internal stator teeth; and second coils, which are respectively wound around the external stator teeth.
    [017] Preferably, but not necessarily, the double stator comprises: internal stator cores that are arranged to face the internal rotor; external stator cores that are located outside the internal stator cores and are arranged to face the external rotor; first coils-coils that are wound respectively on the internal stator cores; and second coils that are coiled respectively in the external stator cores. Advantageous Effects
    [018] As described above, in the case of a drive apparatus for a washing machine of the direct drive type according to the present invention, an internal rotor is connected to a axis of rotation of the dewatering drum, and a external rotor is connected to a rotation axis of the pulsator. Accordingly, a pulsator and a dewatering drum can be selectively operated without having a clutch or a clutch driver, in order to simplify manufacturing processes, reduce manufacturing costs, and reduce the height of the Washing machine.
    [019] Additionally, in the case of a drive unit for a direct drive type washing machine according to the present invention, an internal rotor is connected to a rotating axis of the dewatering drum, and an external rotor is connected to an axis of rotation of the pulsator. Accordingly, a dehydration drum and a pulsator can be rotated in respectively different directions, in order to optimize the washing machine's performance. Description of Drawings
    [020] Figure 1 is a cross-sectional view of a conventional direct drive type washing machine;
    [021] Figure 2 is a cross-sectional view of a washing machine of the direct drive type according to an embodiment of the present invention;
    [022] Figure 3 is a cross-sectional view of a drive device for a washing machine of the direct drive type according to an embodiment of the present invention;
    [023] Figure 4 is a plan view of a stator according to an embodiment of the present invention;
    [024] Figure 5 is a plan view of a stator according to another embodiment of the present invention. Best form
    [025] Hereinafter, a drive apparatus for a washing machine of the direct drive type according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings. In this specification, the size and shape of the components in the drawings may be exaggerated for the sake of clarity and convenience of explanation. In addition, the terms that are specifically defined by considering the configuration and operation of the present invention may vary according to the user or operator's intentions or customs. Definitions of these terms should be made based on the content through that specification.
    [026] Figure 2 is a cross-sectional view of a washing machine of the direct drive type according to an embodiment of the present invention.
    [027] With reference to figure 2, a washing machine of the direct drive type according to an embodiment of the present invention is configured to include: a wrap 10 forming an external appearance; a washing drum 12 which is suspended and supported within the casing 10 and which accommodates water; a dewatering drum 14 which is rotatably disposed within the washing drum 12 to perform washing and dewatering, a pulser 106 which is located rotatably on the drum in the dewatering drum 14 to form a water washing stream; and a drive device 20 which is arranged at the bottom of the dewatering tube 14 to drive the dewatering tube 14 and the pulsator 16, simultaneously or selectively.
    [028] As illustrated in figure 3, the drive device 20 includes a support element 30 which is attached to the underside of the wash tube 12; a axis of rotation of the dewatering drum 22 which is rotatably supported on the support element 30 and which is connected to the dewatering drum 14 to rotate the dewatering drum 14; a axis of rotation of the pulsator 24 which is rotatably arranged within the axis of rotation of the dewatering drum 22 and which is connected to a pulsator 16 to rotate the pulsator 16; an internal rotor 40 which is connected to the axis of rotation of the dewatering drum 22; an external rotor 50 that is connected to the axis of rotation of the pulsator 24; and a double stator 60 which is arranged with an air gap between the inner rotor 40 and the outer rotor 50.
    [029] The axis of rotation of the dewatering drum 22 is formed to have a hollow shape. The upper part of the rotation axis of the dewatering drum 22 is fixed to the dewatering drum 14 and supports 28 are arranged between the center of the rotation axis of the dewatering drum 22 and the support element 30. Accordingly, the rotation axis of the dehydration drum 22 is rotatably supported on the support element 30. The bottom of the rotation axis of the dehydration drum 22 is coupled by joining the internal rotor 40. Accordingly, when the internal rotor 40 is rotated, the rotation axis of the dehydration drum 22 is rotated together.
    [030] The axis of rotation of the pulsator 24 is rotatably supported within the axis of rotation of the dewatering drum 22. The pulsator 16 is attached to the top of the axis of rotation of the pulsator 24, and the bottom of the axis of rotation of the pulsator 24 it is coupled by joining the external rotor 50. Accordingly, when the external rotor 50 is rotated, the axis of rotation of the pulse 24 is rotated together.
    [031] A sealing element 32 is provided between the axis of rotation of the dewatering drum 22 and the axis of rotation of the pulsator 24, in order to thereby prevent water inside the dewatering drum 14 from leaking.
    [032] The internal rotor 40 includes: a first rotor support 42 which is connected to the rotating axis of the dewatering drum 22; a first rear fork 44 which is attached to an external surface of the rotor support 42; and a first magnet 46 which is mounted on the external surface of the first rear fork 44 and which is arranged to face the double stator 60 with an air gap from an internal surface of the double stator 60.
    [033] The first rotor support 42 is formed in a circular plate format whose central part is open. The outer end of the first rotor support 42 is attached to the first rear fork 44 and the first magnets 46, and the inner end is coupled by joining with the axis of rotation of the dewatering drum 22.
    [034] The first magnet 46 is preferably configured to have eight (8) pieces of magnet whose magnetic poles are eight (8) in number, where poles N and poles S are alternately arranged in the circumferential direction.
    [035] The external rotor 50 includes: a second rotor support 52 which is connected to the axis of rotation of the pulsator 24; a second rear fork 54 which is attached to the second rotor support 52; and a second magnet 56 which is mounted on the inner surface of the second rear fork 54 and which is arranged to face the double stator 60 with an air gap from an eternal surface of the double stator 60.
    [036] The second rear fork 54 and second magnet 56 are fixed on one side of the second rotor support 52, and the other side of the rotor support 52 is coupled by joining with the axis of rotation of the pulsator 24.
    [037] The second magnet 56 is preferably configured to have twelve (12) magnet pieces whose magnetic poles are twelve (12) in number, where the N poles and the S poles are alternately arranged in the circumferential direction.
    [038] As shown in figure 4, double stator 60 includes: an integral stator core 68 whose inner side is arranged to face internal rotor 40 and whose outer side is arranged to face external rotor 50; the first coils-coils 70 which are wound inside the stator core 68; and second coil coils 72 which are wound outside the stator core 68.
    [039] Here, stator core 68 includes: a ring-shaped body 62 that is formed from an annular shape; internal stator teeth 64 which are radially formed with a certain gap on the internal surface of the body 62 and around which the inner coils which are the first coils 70 are wound; and external stator teeth 66 which are radially formed with a certain gap on the outer surface of the body 62 and around which external coil coils which are the second coil coils 72 are wound.
    [040] The upper surface of the stator core 68 is fixed to the support element 30.
    [041] Thus, since the body 62, the internal stator teeth 64 and the external stator teeth 66 are integrally formed by a mold, the stator core 68 is made of a single component.
    [042] The number of internal stator teeth 64 is twelve (12), and the number of external stator teeth 66 is eighteen (18). Here, the number of internal stator teeth 64 and the number of external stator teeth 66 can vary depending on the capacity of an engine.
    [043] Here, the number of internal stator teeth 64 is different from the number of external stator teeth 66, so that three internal stator teeth 64 and four external stator teeth 66 are arranged to match one another and are arranged in the same structure in the circumferential direction.
    [044] In other words, the two internal stator teeth 64 which are respectively positioned on both sides of the three internal stator teeth 64, are arranged to face the two external stator teeth 66 which are respectively positioned on both sides. sides of the four outer stator teeth 66, and an inner stator tooth 64 that is positioned in the middle of the three inner stator teeth 64 is positioned between the two outer stator teeth 66.
    [045] The drive device as constructed above forms a magnetic circuit L1 by the first magnet 46 of the internal rotor 40, the teeth of internal stator 64, and the first coil 70, and another magnetic circuit L2 by the second magnet 56 of the external rotor 50 , the sternum stator teeth 66, and the second coil 72.
    [046] That is, the first magnetic circuit L1 is formed to pass through the first magnet 46, the internal stator teeth 64 and the body 62, and, therefore, if when electrical energy is applied to the first coil 70, the internal rotor 40 is rotated.
    [047] Additionally, the second magnetic circuit L2 formed to pass through the second magnet 56, the external stator teeth 66, and the body 62, and thus, when electrical energy is applied to the second coil 72, the external rotor 40 is rotated.
    [048] As described above, since the drive apparatus according to the mode of the present invention is formed to have the first magnetic circuit L1 and the second magnetic circuit L2 separately, the internal rotor 40 and the external rotor 50 are worked separately . In this way, when the energy is applied to the first coil 70, only the internal rotor 40 is rotated, and when the energy is applied to the second coil 72, only the external rotor 50 is rotated, but when the energy is applied to both the first coil 70 and two coils 72, inner rotor 40 and outer rotor 60 are rotated together.
    [049] The function of the direct drive type washing machine according to the mode of the present invention is as follows.
    [050] First, when power is applied to the second coil 70, in order to activate only the pulsator 16 during washing, the external rotor 50 rotates, and the pulsator 16 rotates while the external rotor 50 and the axis of rotation of pulsator 24 rotates.
    [051] Additionally, when the pulsator 16 and the dewatering drum 14 are rotated simultaneously during dehydration and rinsing, energy is applied to both the first coil 70 and the second coil 72. Then, the internal rotor 40 rotates through the first magnetic circuit L1 and the dewatering drum 14 is rotated while the axis of rotation of the dewatering drum 22 associated with the internal rotor 40 is rotated. In addition, the external rotor 50 rotates through the second magnetic circuit L2 and the pulsator 16 is rotated while the axis of rotation of the pulsator 24 associated with the external rotor 50 is rotated.
    [052] Additionally, when the pulsator 16 and the dewatering tube 14 are rotated in opposite directions to each other to remove the laundry loosening or tangle, the forward direction energy is applied to the first coil 70 and energy reverse direction is applied to the second coil 72.
    [053] Then, the internal rotor 40 and the external rotor 50 rotate in opposite directions to each other, and, in this way, the pulsator 16 and the dewatering drum 14 rotate the directions opposite to each other.
    [054] Figure 5 is a plan view of a direct drive type washing machine stator according to another embodiment of the present invention.
    [055] The washing machine of the direct drive type according to another mode of the present invention has the drive apparatus of the same structure as the previous modality of the present invention, but has a stator 80 of a different structure from the previous modality of the present invention.
    [056] Stator 80 according to another embodiment of the present invention includes: inner stator cores 82 around which the first coils 70 are wound and which are arranged to face the first magnet 46 of internal rotor 40, with a air gap; and outer stator cores 84 that are arranged in a circumferential direction on the outer side of inner stator cores 82, around which the second coils 72 are wound, and that are arranged to face the second magnet 56 of the outer rotor 50, with an air gap.
    [057] In other words, stator 80 according to another embodiment of the present invention is divided into the inner stator cores 82 around which the first coils 70 are wound, and the second stator cores 84 around which the second coils 72 are wound, where two stator cores 82 and 84 remain mechanically interconnected.
    [058] It is preferable that the number of inner stator cores 82 is equal to that of the outer stator cores 84. An outer stator core 84 is disposed between two inner stator cores 82. In other words, the inner stator cores 82 and the outer stator cores 84 are mutually skewed in the form of a zigzag.
    [059] Since the function of the drive apparatus according to another embodiment of the present invention is the same as the previous embodiment of the present invention, the detailed description will be omitted.
    [060] As described above, the present invention has been described with respect to particularly preferred modes. However, the present invention is not limited to the above modalities, and it is possible for a person skilled in the art to create various modifications and variations, without departing from the spirit of the present invention. Thus, the scope of protection of the present invention is not defined within its detailed description, but is defined by the claims to be described later and the technical spirit of the present invention. Industrial Applicability
    [061] The present invention can be applied to a washing machine as a drive device that drives the washing machine. In addition, the present invention can be applied to a variety of types of washing machines in which a pulse and dewatering drum are rotated. In addition, the present invention can be applied to a drum-type washing machine by simply changing the structure in addition to a straight washing machine.
    [062] A drive unit of the direct drive type according to the present invention can cause the pulsator and the dewatering drum to rotate in respectively different directions from each other, to further improve the performance of the washing machine and can subdivide the washing machine's functions to allow a more precise washing function.
    权利要求:
    Claims (8)
    [0001]
    1. Drive device for a direct drive type washing machine, the drive device CHARACTERIZED by the fact that it comprises: a support element that is attached to the bottom side of a washing drum; a axis of rotation of the dehydration drum which is rotatably supported on the support element and which is connected to a dehydration drum to rotate the dehydration drum; an axis of rotation of the pulsator which is rotatably arranged within the axis of rotation of the dehydration drum and which is connected to a pulsator to rotate the pulsator; an internal rotor that is connected to the axis of rotation of the dewatering drum and having a first magnet (46); an external rotor that is connected to the axis of rotation of the pulsator and having a second magnet (56); and a double stator which is arranged with an air gap between the internal rotor and the external rotor, and which forms magnetic circuits with respect to the internal rotor and the external rotor, respectively, in which the double stator comprises: a stator core having a plurality of internal stator teeth that are formed inward and are arranged to face the internal rotor; and a plurality of external stator teeth that are formed outwardly and are arranged to face the external rotor; first coils (70) which are respectively wound around the internal stator teeth; and second coils (72) which are respectively wound around the external stator teeth, and in which the drive device forms a magnetic circuit (L1) through the first magnet (46) of the internal rotor (40), the internal stator teeth (64), and the first coil (70), and another magnetic circuit (L2) through the second magnet (56) of the external rotor (50), the external stator teeth (66), and the second coil (72).
    [0002]
    2. Drive device, according to claim 1, CHARACTERIZED by the fact that the internal rotor comprises: a first rotor support that is connected to the axis of rotation of the dehydration drum; a first rear fork which is attached to an external surface of the rotor support; and a first magnet which is mounted on the external surface of the first rear fork and which is arranged to face the double stator with an air gap from an internal surface of the double stator.
    [0003]
    3. Drive device, according to claim 1, CHARACTERIZED by the fact that the external rotor comprises: second rotor support that is connected to the rotation axis of the pulsator; a second rear fork that is attached to the second rotor support; and a second magnet which is mounted on the inner surface of the second rear fork and which is arranged to face the double stator with an air gap from an external surface of the double stator.
    [0004]
    4. Drive device according to claim 1, CHARACTERIZED by the fact that the number of magnetic poles on the first magnet of the internal rotor differs from the number of magnetic poles on the second magnet of the external rotor.
    [0005]
    5. Drive device according to claim 1, CHARACTERIZED by the fact that the stator core comprises: a ring-shaped body that is formed in a ring shape; internal stator teeth that are radially formed on the internal surface of the body; and external stator teeth that are radially formed on the outer surface of the body.
    [0006]
    6. Drive device, according to claim 5, CHARACTERIZED by the fact that the body and the teeth of internal and external stator are integrally formed.
    [0007]
    7. Drive device according to claim 5, CHARACTERIZED by the fact that the number of internal stator teeth differs from the number of external stator teeth.
    [0008]
    8. Drive device according to claim 1, CHARACTERIZED by the fact that the number of cores of the internal stator differs from the number of cores of the external stator, and the cores of the inner stator and the cores of the external stator are arranged in a mutually zigzag shape.
    类似技术:
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    同族专利:
    公开号 | 公开日
    WO2012169774A3|2013-02-21|
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    KR101228043B1|2013-01-30|
    US20140091662A1|2014-04-03|
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    CN103597137A|2014-02-19|
    US9896794B2|2018-02-20|
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    法律状态:
    2018-04-03| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-07-23| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-09-15| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-12-15| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 05/06/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    KR10-2011-0055083|2011-06-08|
    KR1020110055083A|KR101228043B1|2011-06-08|2011-06-08|Driving apparatus for direct drive type washing machine|
    PCT/KR2012/004445|WO2012169774A2|2011-06-08|2012-06-05|Driving device of direct drive washing machine|
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