US 12,305,320 B2
Control method of clothes dryer
Haeyoon Je, Seoul (KR); and Ingeon Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Jan. 22, 2021, as Appl. No. 17/155,883.
Application 17/155,883 is a continuation of application No. 16/196,417, filed on Nov. 20, 2018, granted, now 10,947,661.
Claims priority of application No. 10-2017-0154928 (KR), filed on Nov. 20, 2017.
Prior Publication US 2021/0140092 A1, May 13, 2021
Int. Cl. D06F 58/20 (2006.01); D06F 58/38 (2020.01); D06F 101/20 (2020.01); D06F 103/32 (2020.01); D06F 103/34 (2020.01); D06F 103/50 (2020.01); D06F 105/26 (2020.01); D06F 105/46 (2020.01); D06F 105/54 (2020.01)
CPC D06F 58/206 (2013.01) [D06F 58/38 (2020.02); D06F 2101/20 (2020.02); D06F 2103/32 (2020.02); D06F 2103/34 (2020.02); D06F 2103/50 (2020.02); D06F 2105/26 (2020.02); D06F 2105/46 (2020.02); D06F 2105/54 (2020.02)] 14 Claims
OG exemplary drawing
 
1. A dryer comprising:
a main body on which an input port is formed;
a drum rotatably installed in the main body;
a driving motor configured to provide rotation power to the drum;
a blowing fan configured to force a flow of air to the main body;
a heat pump system including a condenser, an evaporator, and a compressor so as to heat air supplied to the drum;
an outer air temperature sensor configured to measure an outer temperature; and
a controller configured to control a plurality of operation modes by comparing the measured outer temperature with a preset reference temperature,
wherein the controller is configured to:
control the dryer in a first mode when the measured outer temperature is greater than or equal to the preset reference temperature, and
control the dryer in a second mode when the measured outer temperature is less than the preset reference temperature,
wherein the first mode is defined as operating in a previously input operation mode continuously,
wherein the second mode is defined as operating in an operation mode in which an operation frequency of the compressor is higher than the previously input operation mode, and
wherein the plurality of operation modes includes:
a speed mode in which an initial driving frequency and a variable minimum frequency of the compressor are highest,
a standard mode in which the initial driving frequency and the variable minimum frequency of the compressor are lower than the speed mode, and
an energy mode in which the initial driving frequency and the variable minimum frequency of the compressor are lower than the standard mode.