US 12,092,342 B2
Direct current electric on-demand water heater
Christopher Mark Hayden, Shelton, CT (US); Sergiu G. Mihu, Newton, CT (US); and Eric Robert Jurczyszak, Berlin, CT (US)
Assigned to Rheem Manufacturing Company, Atlanta, GA (US)
Filed by Rheem Manufacturing Company, Atlanta, GA (US)
Filed on Jun. 16, 2023, as Appl. No. 18/211,028.
Application 18/211,028 is a continuation of application No. 16/806,119, filed on Mar. 2, 2020, granted, now 11,692,718.
Prior Publication US 2023/0324052 A1, Oct. 12, 2023
Int. Cl. F24D 17/00 (2022.01); F24D 17/02 (2006.01); F24H 1/06 (2022.01); F24H 9/20 (2022.01); F24H 15/172 (2022.01); F24H 15/174 (2022.01); F24H 15/215 (2022.01); F24H 15/219 (2022.01); F24H 15/223 (2022.01); F24H 15/238 (2022.01); F24H 15/37 (2022.01); F24H 15/375 (2022.01); F24H 15/421 (2022.01); F24S 10/00 (2018.01); G05B 15/02 (2006.01); F24D 18/00 (2022.01); F24D 101/40 (2022.01); F24D 105/00 (2022.01); F24H 15/156 (2022.01); F24H 15/20 (2022.01); F24H 15/265 (2022.01); F24H 15/281 (2022.01); F24H 15/45 (2022.01)
CPC F24D 17/0068 (2013.01) [F24D 17/02 (2013.01); F24H 1/06 (2013.01); F24H 9/2021 (2013.01); F24H 15/172 (2022.01); F24H 15/174 (2022.01); F24H 15/215 (2022.01); F24H 15/219 (2022.01); F24H 15/223 (2022.01); F24H 15/238 (2022.01); F24H 15/37 (2022.01); F24H 15/375 (2022.01); F24H 15/421 (2022.01); F24S 10/00 (2018.05); G05B 15/02 (2013.01); F24D 18/00 (2022.01); F24D 2101/40 (2022.01); F24D 2105/00 (2022.01); F24H 15/156 (2022.01); F24H 15/20 (2022.01); F24H 15/265 (2022.01); F24H 15/281 (2022.01); F24H 15/45 (2022.01); F24H 2240/01 (2013.01); F24H 2250/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A direct current (DC) electric fluid heating system comprising:
a DC electric fluid heating device comprising:
a heating chamber having a fluid inlet and a fluid outlet, the heating chamber being configured to hold a fluid and having a fluid capacity from 0.5 gallons to 5 gallons;
an electric heat source comprising a resistive heating element configured to heat the fluid;
a flow sensor configured to detect a flow of a fluid to or from the heating chamber;
a temperature sensor configured to detect a temperature of a fluid flowing to or from the heating chamber or within the heating chamber; and
a controller configured to:
receive flow data from the flow sensor, the flow data indicative of the fluid flow;
receive temperature data from the temperature sensor, the temperature data indicative of the fluid temperature;
determine whether a heat output of the electric heat source should be adjusted based on at least two of the flow data, the temperature data, or a temperature setting; and
output instructions for modulating an amount of DC power supplied to the electric heat source from a DC power source in response to determining that the heat output of the electric heat source should be adjusted.