US 11,057,965 B2
Control device of water purifier, water purifier, and control method thereof
Yonghyun Kim, Seoul (KR); Kobong Choi, Seoul (KR); Jewook Jeon, Seoul (KR); and Siyeon An, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on May 4, 2017, as Appl. No. 15/586,335.
Claims priority of application No. 10-2016-0055458 (KR), filed on May 4, 2016.
Prior Publication US 2017/0325294 A1, Nov. 9, 2017
Int. Cl. B67D 3/00 (2006.01); G05B 15/02 (2006.01); G05D 23/19 (2006.01); H05B 6/06 (2006.01); H05B 6/10 (2006.01)
CPC H05B 6/108 (2013.01) [B67D 3/0022 (2013.01); B67D 3/0041 (2013.01); G05B 15/02 (2013.01); G05D 23/1917 (2013.01); H05B 6/06 (2013.01); B67D 2210/00005 (2013.01); B67D 2210/00102 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A control device of a water purifier that dispenses hot water, the control device comprising:
an input unit that receives, from a user, a command signal including information regarding a set temperature; and
a controller that is configured to control the water purifier based on the command signal,
wherein the controller is configured to:
control power output of an induction heater that is configured to, based on the set temperature, heat water stored in a hot water tank of the water purifier to thereby generate hot water to be dispensed,
control a temperature of the hot water dispensed by the water purifier based on the power output of the induction heater,
control the power output of the induction heater by controlling a frequency or a phase of AC power supplied to the induction heater,
control the frequency or the phase of AC power applied to the induction heater based on a difference between a detected temperature of water introduced into the hot water tank and a detected temperature of the hot water dispensed from the hot water tank compared to a preset difference reference, and
adjust an angle of a flow rate valve that is positioned at an upstream of the hot water tank and that is configured to control a flow channel configured to supply purified water from a filter to the hot water tank.