Patent ID: 11944128
Assignee: KT&G CORPORATION
Field: Other consumer goods (Other fields)
Classification: CPC A  B | IPC A

Claim 8:
9. The method of claim 1, wherein the setting of the mode of the cleaning operation comprises:
setting the cleaning operation to a normal cleaning mode based on the number of times that the cleaning operation has been performed during the first period being is greater than or equal to a first threshold number;
setting the cleaning operation to a first enhanced cleaning mode based on the number of times that the cleaning operation has been performed during the first period being less than the first threshold number of times and a number of times that the cleaning operation has been performed during a second period being greater than or equal to the first threshold number; and
setting the cleaning operation to a second enhanced cleaning mode based on the number of times that the cleaning operation has been performed during the second period being less than the first threshold number.