US 11,835,242 B2
Hot water supplying apparatus and method for utilizing waste heat of hot water supplying apparatus
Hyuk Choi, Seoul (KR); Jung Keom Kim, Seoul (KR); and Chang Heoi Hu, Seoul (KR)
Assigned to KYUNGDONG NAVIEN CO., LTD., Pyeongtaek-si (KR)
Appl. No. 16/770,045
Filed by KYUNGDONG NAVIEN CO., LTD., Pyeongtaek-si (KR)
PCT Filed Dec. 4, 2018, PCT No. PCT/KR2018/015223
§ 371(c)(1), (2) Date Jun. 4, 2020,
PCT Pub. No. WO2019/124821, PCT Pub. Date Jun. 27, 2019.
Claims priority of application No. 10-2017-0177338 (KR), filed on Dec. 21, 2017.
Prior Publication US 2020/0386418 A1, Dec. 10, 2020
Int. Cl. F24D 3/08 (2006.01); F24D 17/00 (2022.01); F24H 9/20 (2022.01); F24D 19/10 (2006.01); F24H 15/174 (2022.01); F24H 15/219 (2022.01); F24H 15/269 (2022.01); F24H 15/335 (2022.01); F24H 15/156 (2022.01); F24H 15/36 (2022.01); F24H 1/10 (2022.01); F24H 15/281 (2022.01)
CPC F24D 19/1069 (2013.01) [F24D 17/001 (2013.01); F24H 9/20 (2013.01); F24H 15/156 (2022.01); F24H 15/174 (2022.01); F24H 15/219 (2022.01); F24H 15/269 (2022.01); F24H 15/335 (2022.01); F24H 15/36 (2022.01); F24D 3/08 (2013.01); F24H 1/107 (2013.01); F24H 15/281 (2022.01); Y02B 30/18 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A hot water supply apparatus which includes a sensible heat exchanger configured to heat a heating fluid using combustion heat from a burner, a hot water supply heat exchanger which generates hot water using an exchange of heat between the heating fluid heated in the sensible heat exchanger and direct water and supplies the generated hot water to a faucet, and a pump configured to circulate the heating fluid through a flow path of the heating fluid which connects the sensible heat exchanger to the hot water supply heat exchanger, the hot water supply apparatus configured to receive a final hot water use signal that a user transmits when an additional amount of hot water that is needed remains while the user is using the hot water,
the hot water supply apparatus comprising: a controller configured to control operation of the burner to be stopped on the basis of the final hot water use signal and control the pump to circulate the heating fluid,
wherein,
the hot water supply apparatus further comprises a flow rate sensing unit configured to sense a change in flow rate of water supplied by opening or closing of the faucet and output a flow rate signal,
wherein the controller controls operation of the burner to be stopped and controls the pump to circulate the heating fluid when the flow rate signal output from the flow rate sensing unit corresponds to the final hot water use signal.