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KR-20260063505-A - A laundry treating apparatus and a control method of the same

KR20260063505AKR 20260063505 AKR20260063505 AKR 20260063505AKR-20260063505-A

Abstract

The present invention relates to a garment processing device that detects the weight of the garment by rotating the drum less than one revolution in a dryer equipped with a reduction gear that lowers the motor's rpm and transmits it to the drum.

Inventors

  • 배순철
  • 조영한
  • 김동욱
  • 박경태

Assignees

  • 엘지전자 주식회사

Dates

Publication Date
20260507
Application Date
20241030

Claims (15)

  1. A cabinet having an opening at the front; A door for opening and closing the above-mentioned opening; A locking part that locks the above door to the above cabinet; A drum provided inside the cabinet to accommodate clothing; A motor unit comprising a drive shaft positioned behind the drum and providing power to rotate the drum; A reduction gear coupled to the drive shaft to transmit power to the drum, and rotating the drum at an RPM slower than the RPM of the drive shaft; A control panel including a power supply unit that receives a power command to supply power, and a display unit that displays weight information of the clothing; The motor unit is configured to rotate the drum when the power unit is input, while the lock unit is in an unlocked state of the door, and The above display unit displays weight information of the clothing after the drum starts to rotate, A clothing processing device characterized in that the motor unit is configured to receive a constant current so that the drive shaft rotates when the lock unit is unlocked.
  2. In paragraph 1, The above motor part When the above locking part is in the unlocked state of the door A clothing processing device characterized by being set to receive a first current for a first period and a second current higher than the first current for a second period.
  3. In paragraph 1, The above motor part When the above locking part is in the unlocked state of the door A clothing processing device characterized by the fact that the number of times the above current is supplied and the number of times the above drum is rotated are set to be the same.
  4. In paragraph 1, The above motor part When the above locking part is in the unlocked state of the door A clothing processing device characterized by being configured to rotate the drive shaft by receiving the above current once.
  5. In paragraph 1, The above motor part When the above locking part is in the unlocked state of the door A clothing processing device characterized by the above-described reduction gear rotating the drive shaft so that it can rotate the drum by more than 45 degrees.
  6. In paragraph 3, The above motor part When the above locking part is in the unlocked state of the door A clothing processing device characterized by the above-described reduction gear rotating the drive shaft so that it can rotate the drum up to 90 degrees.
  7. In paragraph 1, The above motor part A clothing processing device characterized by the above-mentioned locking part being set to receive the same current every time when the door is unlocked.
  8. In Paragraph 7, The above motor part Even if the weight of the clothing contained in the drum changes When the above locking part is in the unlocked state of the door A clothing processing device characterized by being set to receive the same current every time.
  9. In paragraph 8, The above motor part If the weight of the clothing contained in the drum is different When the above locking part is in the unlocked state of the door A clothing processing device characterized by rotating the above-mentioned drive shaft at a different angular velocity.
  10. In Paragraph 9, The above motor part If the weight of the above clothing is heavy, compared to when the weight of the above clothing is light When the above locking part is in the unlocked state of the door A clothing processing device characterized by being set to rotate the drum at a slower angular velocity.
  11. In Paragraph 7, The above motor part After the above locking part locks the door, A clothing processing device characterized by being set so that the supplied current changes when the weight of the clothing changes.
  12. In Paragraph 11, The above motor part If the weight of the above clothing is heavy A clothing processing device characterized by being set to receive a higher current when the weight of the clothing is light.
  13. In paragraph 1, The above display part A clothing processing device characterized by displaying the weight information in advance before the drum stops.
  14. In Paragraph 13, The above display part A clothing processing device characterized by displaying the weight information after the rotation direction of the drum is changed.
  15. In paragraph 1, A clothing processing device characterized by the above weight information including at least one of the weight of the clothing and the estimated execution time for processing the clothing.

Description

A laundry treating apparatus and a control method of the same The present invention relates to a clothing processing device and a method for controlling the same. Generally, the term "clothing processing device" refers to a device capable of washing, drying, or performing washing or drying of clothing, etc. Here, the clothing processing device may perform only washing or drying functions, or may perform both washing and drying. Recently, a garment processing device has emerged that can dry clothes by directly connecting a rotating shaft to a drum that receives the clothes, allowing the drum's rotation direction or RPM to be changed. Even though the garment processing device is equipped as a dryer, the motor is positioned at the rear of the drum, allowing the drum to be rotated using the motor's power through a rotating shaft rather than a belt and pulley. (Refer to Korean Published Patent Application No. 10-2020-0066169) This garment processing device was effective in allowing the garments to be exposed to the supplied hot air to the maximum extent while minimizing the impact generated when the garments fall, by freely changing the direction and speed of the drum's rotation. However, the clothing processing device had a limitation in that it had to detect the applied current or output current of the motor while rotating the drum one or more times when detecting the weight of the clothing. Conventional clothing processing devices were equipped to detect the weight of the clothing after the execution unit for performing the drying course was input in order to prevent the drying course from being delayed due to the time taken to detect the weight of the clothing, and there was a limitation in that weight information, such as the estimated execution time required to dry the clothing, was displayed only after the execution unit was input. Accordingly, conventional clothing processing devices had a fundamental problem in that they could not inform the user of the time required for the clothing loaded into the drum to be completely dried before the course was executed. Recently, a garment processing device has also emerged that can detect the weight of the clothing and display the weight information externally, even when the door to the cabinet is unlocked, before the user inputs the execution unit to perform the course. (Refer to Korean Published Patent Application No. 10-2022-0120366) The above clothing processing device has the effect of being able to detect the weight of the clothing while rotating the rotation axis less than one revolution, so that when the power supply is input, the weight information of the clothing can be displayed immediately. However, the clothing processing device was equipped with a washing machine in which the motor's rotational shaft was directly connected to the drum, and since the rotational angle of the drum could be sufficiently guaranteed even when the rotational shaft was rotated less than one revolution, the control method could be applied. In other words, in the case of a dryer such as Korean Published Patent Application No. 10-2020-006616, even if the drum is directly connected to the rotation shaft and rotated, a reduction gear that reduces and transmits the RPM of the motor's rotation shaft between the drum and the motor is inevitably provided, so there was a limitation that if the rotation shaft is rotated less than one revolution, the drum cannot be rotated to an angle that provides the information necessary to detect clothing. The clothing processing device had a fundamental problem in that it could not detect the weight of the clothing through motor current control because noise was included in the current applied or output from the motor due to variables such as gear interference and gear friction of the reduction gear. Meanwhile, in the case of the garment processing device, due to the reduction gear structure equipped with a gearbox, an alignment process was performed to match the gear arrangement inside the reduction gear or to return the position of the drive shaft of the motor to a reference position. Accordingly, the initial current supplied to the motor was not used to rotate the drum, but rather to align the internal gears of the reduction gear or to position the drive shaft of the motor back to its original position. For example, the primary current supplied to the motor was used to perform the alignment process, and from the secondary current onwards, the drum could be rotated to detect the weight of the clothing. Consequently, the clothing processing device had a problem in which the drum did not rotate immediately or the rotation angle was very small even when current began to be supplied to the motor, making it impossible to detect the weight of the clothing with the initial current. In other words, since the clothing processing device requires time until a second or higher current is supplied to the motor, there was a problem in that the clothing weight