US-12624497-B2 - Dryer and method of controlling the same

Abstract

A dryer is provided. The dryer includes a cabinet, a drum rotatably disposed inside the cabinet, at least one roller mounted on at least one surface inside of the cabinet to support the drum, a motor configured to provide power to rotate the drum, a motor driver configured to control the motor, and at least one processor configured to determine at least one of a first rotation velocity of the motor or a first rotation time of the motor based on a non-use time of the dryer, and control the motor driver based on the determined at least one of the first rotation velocity or the first rotation time of the motor.

Inventors

• Taehyung Kim
• Eunkyeong KWAK
• Minhwan OH
• Hooijoong KIM
• Hyemin CHA

Assignees

• SAMSUNG ELECTRONICS CO., LTD.

Dates

Publication Date

20260512

Application Date

20230314

Priority Date

20220610

Claims (20)

1. 1 . A dryer comprising: a cabinet; a drum rotatably disposed inside the cabinet; at least one roller mounted on at least one surface inside of the cabinet to support the drum; a motor configured to provide power to rotate the drum; a motor driver configured to control the motor; and at least one processor configured to: determine at least one of a first rotation velocity of the motor or a first rotation time of the motor based on a non-use time of the dryer, and control the motor driver based on the determined at least one of the first rotation velocity or the first rotation time of the motor.
2. 2 . The dryer of claim 1 , wherein the at least one roller: while the drum is stationary, deforms due to a pressure applied from the drum; and while the drum is rotating, restores from the deformation.
3. 3 . The dryer of claim 2 , further comprising: an input device, wherein the at least one processor is further configured to: upon receiving a user input to select a rotation cycle including a rotation of the drum, perform a noise reduction cycle for reducing noise generated by the deformation of the at least one roller, and start the rotation cycle after performing the noise reduction cycle.
4. 4 . The dryer of claim 3 , wherein the at least one processor is further configured to: in a process of performing the noise reduction, determine the at least one of the first rotation velocity of the motor or the first rotation time of the motor based on the non-use time of the dryer, and control the motor driver based on the determined at least one of the first rotation velocity or the first rotation time of the motor.
5. 5 . The dryer of claim 3 , wherein the at least one processor is further configured to determine the non-use time of the dryer based on a time gap between a time at which the rotation of the drum is ended last, and a start time of the rotation cycle or a current time.
6. 6 . The dryer of claim 3 , wherein the at least one processor is further configured to determine a maximum revolution per minute (RPM) of the motor at which noise due to the rotation of the drum does not occur as the first rotational velocity of the motor.
7. 7 . The dryer of claim 6 , wherein the at least one processor is further configured to determine the first rotation time of the motor based on the non-use time of the dryer.
8. 8 . The dryer of claim 7 , wherein the first rotation time of the motor is determined based on a first number of rotations of the drum and the first rotation velocity of the motor corresponding to the non-use time of the dryer.
9. 9 . The dryer of claim 8 , wherein the first number of rotations of the drum corresponds to a minimum number of rotations of the drum required to restore the deformation of the at least one roller by rotating the drum.
10. 10 . The dryer of claim 1 , wherein the at least one processor is further configured to determine the at least one of the first rotation velocity of the motor or the first rotation time of the motor based on the non-use time of the dryer and an ambient temperature.
11. 11 . A method of controlling a dryer including a cabinet, a drum rotatably disposed inside the cabinet, at least one roller mounted on at least one surface inside of the cabinet to support the drum, a motor configured to provide power to rotate the drum, and a motor driver configured to control the motor, the method comprising: determining at least one of a first rotation velocity of the motor or a first rotation time of the motor based on a non-use time of the dryer; and controlling the motor driver based on the determined at least one of the first rotation velocity or the first rotation time of the motor.
12. 12 . The method of claim 11 , wherein the at least one roller: while the drum is stationary, deforms due to a pressure applied from the drum; and while the drum is rotating, restores from the deformation.
13. 13 . The method of claim 12 , further comprising: upon receiving a user input to select a rotation cycle including a rotation of the drum, performing a noise reduction cycle for reducing noise generated by the deformation of the at least one roller; and starting the rotation cycle after performing the noise reduction cycle.
14. 14 . The method of claim 13 , wherein the performing of the noise reduction includes: determining the at least one of the first rotation velocity of the motor or the first rotation time of the motor based on the non-use time of the dryer; and controlling the motor driver based on the determined at least one of the first rotation velocity or the first rotation time of the motor.
15. 15 . The method of claim 13 , wherein the determining of the at least one of the first rotation velocity of the motor or the first rotation time of the motor based on the non-use time of the dryer includes determining the non-use time of the dryer based on a time gap between a time at which the rotation of the drum is ended last, and a start time of the rotation cycle or a current time.
16. 16 . The method of claim 13 , wherein the determining of the at least one of the first rotation velocity of the motor or the first rotation time of the motor based on the non-use time of the dryer includes determining a maximum revolution per minute (RPM) of the motor at which noise due to the rotation of the drum does not occur as the first rotational velocity of the motor.
17. 17 . The method of claim 16 , wherein the determining of the at least one of the first rotation velocity of the motor or the first rotation time of the motor based on the non-use time of the dryer includes determining the first rotation time of the motor based on the non-use time of the dryer.
18. 18 . The method of claim 17 , wherein the first rotation time of the motor is determined based on a first number of rotations of the drum and the first rotation velocity of the motor corresponding to the non-use time of the dryer.
19. 19 . The method of claim 18 , wherein the first number of rotations of the drum corresponds to a minimum number of rotations of the drum required to restore the deformation of the at least one roller by rotating the drum.
20. 20 . The method of claim 19 , wherein the determining of the at least one of the first rotation velocity of the motor or the first rotation time of the motor based on the non-use time of the dryer includes determining the at least one of the first rotation velocity of the motor or the first rotation time of the motor based on the non-use time of the dryer and an ambient temperature.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) This application is a continuation application, claiming priority under § 365(c), of an International application No. PCT/KR2023/003281, filed on Mar. 10, 2023, which is based on and claims the benefit of a Korean patent application number 10-2022-0070949, filed on Jun. 10, 2022, in the Korean Intellectual Property Office, the disclosure of which is incorporated by reference herein in its entirety. TECHNICAL FIELD The disclosure relates to a dryer for reducing noise generated when a drum is rotated to dry laundry, such as clothes, and a method of controlling the same. More particularly, the disclosure relates to a dryer and a control method that are capable of determining a rotation velocity and a rotation time of a motor based on a non-use time of a dryer in order to reduce rotational initial noise of a drum. BACKGROUND ART A dryer is a device that dries laundry by supplying hot air into a drum containing laundry, such as clothes, towels, blankets, and the like, while rotating the drum. The drum of the dryer is supported by at least one roller, and the at least one roller rotates together with the drum during rotation of the drum while helping the drum efficiently rotate. Therefore, the surface of the roller in contact with the drum is formed of a rubber material. While the drum is not rotating, the weight of the drum is supported by a rear frame on which a rotary shaft of the drum is mounted and at least one roller. Accordingly, while the dryer is not in use, the at least one roller may be deformed by the weight of the drum, and the deformation of the roller may cause rotational initial noise of the drum. The above information is presented as background information only to assist with an understanding of the disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with regard to the disclosure. DISCLOSURE Technical Problem Aspects of the disclosure are to address at least the above-mentioned problems and/or disadvantages and to provide at least the advantages described below. Accordingly, an aspect of the disclosure is to provide a dryer and a control method that are capable of determining a rotation velocity and a rotation time of a motor based on a non-use time of a dryer in order to reduce rotational initial noise of a drum. Additional aspects will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the presented embodiments. Technical Solution In accordance with aspect of the disclosure, a dryer is provided. The dryer includes a cabinet, a drum rotatably disposed inside the cabinet, at least one roller mounted on at least one surface inside of the cabinet to support the drum, a motor configured to provide power to rotate the drum, a motor driver configured to control the motor, and at least one processor configured to determine at least one of a first rotation velocity of the motor or a first rotation time of the motor based on a non-use time of the dryer, and control the motor driver based on the determined at least one of the first rotation velocity or the first rotation time of the motor. The at least one roller may, while the drum is stationary, deform due to a pressure applied from the drum, and while the drum is rotating, restore from the deformation. The dryer may further include an input device, wherein the at least one processor may be configured to, upon receiving a user input to select a rotation cycle including a rotation of the drum, perform a noise reduction cycle for reducing noise generated by the deformation of the at least one roller, and start the rotation cycle after performing the noise reduction cycle. The at least one processor may be configured to, in a process of performing the noise reduction, determine the at least one of the first rotation velocity of the motor or the first rotation time of the motor based on the non-use time of the dryer, and control the motor driver based on the determined at least one of the first rotation velocity or the first rotation time of the motor. The at least one processor may be configured to determine the non-use time of the dryer based on a time gap between a time at which the rotation of the drum may be ended last, and a start time of the rotation cycle or a current time. The at least one processor may be configured to determine a maximum revolution per minute (RPM) of the motor at which noise due to the rotation of the drum may not occur as the first rotational velocity of the motor. The at least one processor may be configured to determine the first rotation time of the motor based on the non-use time of the dryer. The first rotation time of the motor may be determined based on a first number of rotations of the drum and the first rotation velocity of the motor corresponding to the non-use time of the dryer. The first number of rotation