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KR-102962165-B1 - Laundry Treatment Apparatus

KR102962165B1KR 102962165 B1KR102962165 B1KR 102962165B1KR-102962165-B1

Abstract

The present application comprises: a drum body providing a space for storing a drying object (clothing, etc.); a front cover forming the front surface of the drum body; a rear cover forming the rear surface of the drum body; and a drum having a drum input port that penetrates the front cover and communicates with the interior of the drum body; a fixed panel provided at a position spaced apart from the rear cover; a housing body fixed to the fixed panel and having a receiving space formed inside and an opening hole communicating the receiving space to the outside, and a housing having a housing cover coupled to the housing body to close the opening hole; an input shaft penetrating the housing body, with one end located outside the receiving space and the other end located inside the receiving space; an output shaft penetrating the housing cover, with one end fixed to the rear cover and the other end located inside the receiving space; a gear unit located inside the receiving space and transmitting the rotational motion of the input shaft to the output shaft; a motor having a stator fixed to the fixed panel or the housing to form a rotating magnetic field, and a rotor that rotates by the rotating magnetic field. The present invention relates to a clothing processing device comprising: a fastening body fixed to the rotor and connecting the input shaft and the rotor; and a first heat dissipation part provided on the fastening body and forming an airflow between the housing body and the rotor when the rotor rotates.

Inventors

  • 안용준
  • 송명준

Assignees

  • 엘지전자 주식회사

Dates

Publication Date
20260508
Application Date
20210208

Claims (12)

  1. A drum body providing a space for storing clothing, a front cover forming the front surface of the drum body, a rear cover forming the rear surface of the drum body, and a drum input port penetrating the front cover and communicating with the interior of the drum body; A fixed panel provided at a position spaced apart from the above rear cover; A housing body fixed to the above-mentioned fixed panel and having a receiving space formed inside and an opening hole communicating the receiving space to the outside, and a housing cover coupled to the housing body to close the opening hole; An input shaft penetrating the housing body, with one end located outside the receiving space and the other end located inside the receiving space; An output shaft penetrating the housing cover, with one end fixed to the rear cover and the other end located inside the receiving space; A gear unit located inside the above receiving space and transmitting the rotational motion of the input shaft to the output shaft; A motor equipped with a stator fixed to the above housing to form a rotating magnetic field, and a rotor that rotates by the rotating magnetic field; A fastening body fixed to the rotor and connecting the input shaft and the rotor; and A clothing processing device characterized by including: a first heat dissipation part provided in the above-mentioned fastening body and forming an airflow between the housing body and the rotor when the rotor rotates.
  2. In paragraph 1, A clothing processing device characterized by including a blade protruding from the fastening body toward the housing body in the first heat dissipation part.
  3. In paragraph 1, A clothing processing device characterized in that the first heat dissipation unit is provided by having blades protruding from the fastening body toward the housing body arranged radially around the input axis.
  4. In paragraph 2, A clothing processing device characterized by further including a motor heat dissipation unit provided in the rotor and dissipating heat inside the rotor to the outside of the rotor.
  5. In paragraph 4, The rotor comprises: a rotor body to which the fastening body is fixed; a rotor circumferential surface extending from the rotor body to surround the circumferential surface of the stator; and permanent magnets arranged so that the N pole and S pole are alternately exposed along the rotor circumferential surface. A clothing processing device characterized by comprising: a rotor through-hole formed along the diameter direction of the rotor body penetrating the rotor body; and a rotor blade protruding from the rotor body and extending along the edge of the rotor through-hole.
  6. In paragraph 5, It further includes a fastening body bend portion formed by the fastening body being bent toward the rotor; A clothing processing device characterized in that the blade extends from the bent portion of the fastening body to the edge of the fastening body.
  7. In any one of paragraphs 1 through 6, A clothing processing device further comprising: a second heat dissipation unit provided in the housing body to release heat inside the receiving space to the outside of the receiving space.
  8. In Paragraph 7, The above housing body is provided to include a housing base, an input shaft through hole formed to penetrate the housing base and into which the input shaft is inserted, and a housing circumferential surface extending from the edge of the housing base toward the fixing panel. A clothing processing device characterized in that the second heat dissipation part includes a housing protrusion protruding from the circumferential surface of the housing.
  9. In Paragraph 7, The above housing body is provided to include a housing base, an input shaft through hole formed to penetrate the housing base and into which the input shaft is inserted, and a housing circumferential surface extending from the edge of the housing base toward the fixing panel. A clothing processing device characterized in that the second heat dissipation part includes a housing bend portion that is bent toward the receiving space from the circumferential surface of the housing.
  10. In any one of paragraphs 1 through 6, An input shaft through-hole provided to penetrate the housing body and into which the input shaft is inserted; A pipe-shaped input shaft support extending from the input shaft through-hole toward the rotor; An input shaft first bearing provided on the input shaft support portion and rotatably coupled to the input shaft through hole; An input shaft second bearing provided on the input shaft support and positioned between the input shaft first bearing and the fastening body, and rotatably coupled to the input shaft through hole; A bending portion of the fastening body provided in the above fastening body and forming a space in which the input shaft support is received; and A clothing processing device further comprising a bending part through hole provided to penetrate the rotor and into which the bending part of the fastening body is inserted.
  11. In Paragraph 10, A clothing processing device characterized by including a damper positioned between the first input shaft bearing and the second input shaft bearing to dampen the transmission of vibration of the first input shaft bearing to the second input shaft bearing.
  12. In Paragraph 10, The above gear unit is A ring gear fixed to the housing body and located inside the receiving space; A driving gear fixed to the input shaft and located in the receiving space; A cage located inside the above receiving space and having the other end of the output shaft fixed thereto; and A clothing processing device characterized by including a driven gear that is rotatably fixed to the cage and connects the driving gear and the ring gear.

Description

Laundry Treatment Apparatus This application relates to a clothing processing device. A clothing processing device is a general term for a washing machine that washes clothing (items to be washed or dried), a dryer that dries clothing, and a device capable of performing both washing and drying of clothing. It was common for a washing machine to be equipped with a tub for storing water, a washing drum provided inside the tub for storing clothes, and a driving unit (washing driving unit) for rotating the washing drum, and for a dryer to be equipped with a drying drum for storing clothes, a driving unit (drying driving unit) for rotating the drying drum, and a heat exchanger for supplying air to the drying drum to remove moisture from the clothes. While the washing drive unit is typically configured to include a stator fixed to the tub to form a rotating magnetic field, a rotor that rotates by the rotating magnetic field, and a rotating shaft that passes through the tub to connect the washing drum and the rotor, the drying drive unit is generally configured to include a motor, a pulley fixed to the rotating shaft of the motor, and a belt (power transmission unit) that connects the rotational movement of the pulley to the drying drum. The washing drive unit is configured so that the motor's rotating shaft connects the washing drum and the rotor. For washing or spinning clothes, it is necessary for the washing drive unit to control the washing drum's rotational speed to a high level or change its rotational direction; if the motor's rotating shaft is configured to directly connect the washing drum and the rotor, it has the effect of easily controlling the washing drum's rotational speed and direction. Meanwhile, conventional drying drive units generally feature a structure in which a power transmission unit, such as a belt, connects the drying drum to the rotating shaft of the motor. This is because dryers have little need to maintain a high rotational speed of the drying drum or change its direction of rotation, making it acceptable to rotate the drying drum using a power transmission unit such as a belt. However, if the rotational speed and direction of the drying drum could be changed, the movement of clothing inside the drum could be controlled, thereby allowing for the expectation of reduced drying time and improved drying performance. Among conventional dryers, there is one equipped with a drying drive unit in which a rotor and a drying drum are connected by a reduction gear (Publication No. 10-2020-0065931). The above drying drive unit is configured such that an input shaft connected to the rotor and an output shaft connected to the drying drum form a coaxial axis, which can be expected to shorten drying time or improve drying performance, but there was a possibility that the durability of the drying drive unit would be reduced as heat supplied to the drying drum was transferred into the interior of the drying drive unit. Figures 1 and 2 illustrate an example of a clothing processing device. Figures 3 and 4 illustrate an example of the internal structure of a clothing processing device. Figure 5 illustrates an example of a stator. Figure 6 illustrates an example of a rotor. FIGS. 7 to 10 illustrate an example of a power transmission unit. Figure 11 illustrates an example of an insulating section. Figures 12 and 13 illustrate cross-sections of a power transmission section. Hereinafter, an embodiment of a clothing processing device is described in detail with reference to the attached drawings. FIG. 1 illustrates an example of a clothing processing device (100), wherein the clothing processing device (100) may be configured to include a cabinet (1) and a drum (2) rotatably provided inside the cabinet to provide a space for storing clothing (clothing to be washed or dried). As shown in FIG. 2, a drying unit (3) may be provided inside the cabinet (1) to remove moisture from clothing by supplying high-temperature drying air (air at a temperature higher than room temperature, air with a dryness higher than the dryness of indoor air) to the drum (2). As illustrated in FIG. 3, the cabinet (1) includes a front panel (11) forming the front surface of the garment processing device and a base panel (17) forming the bottom surface of the garment processing device. The front panel (11) is provided with an input port (111) communicating with the drum (2), and the input port (111) may be provided to be closed by a door (113). The above-mentioned front panel (11) is provided with a control panel (115), and the control panel (115) may be provided with an input unit for receiving control commands from a user and a display unit for outputting information such as control commands selectable by the user. The input unit may be provided to include a power supply request unit for requesting power supply to a clothing processing device, a course input unit for enabling the user to select a desired course among a plurality of cours