Tankless electric water heater
First Claim
1. A system comprising:
- a liquid storage device, the liquid storage device comprising a liquid storage device power supply and a liquid storage device heating element;
an inlet pipe connected to an outlet of the liquid storage device; and
a fluid heating device comprising;
a fluid heating device power supply;
an inlet;
an outlet;
a heating chamber disposed between the inlet and the outlet;
a fluid heating device heating element disposed inside the heating chamber;
a flow sensor configured to detect a flow rate of fluid downstream of the inlet;
a valve; and
a first temperature sensor configured to detect a first temperature of the fluid downstream of the inlet; and
a controller configured tocontrol a switch to switch between providing a supply of power to the liquid storage device heating element via the liquid storage device power supply or providing a supply of power to the fluid heating device heating element via the fluid heating device power supply.
2 Assignments
0 Petitions
Accused Products
Abstract
A tankless electric water heater system including a heating chamber having an inlet at a first end and an outlet at a second end, a heating element connected to the heating chamber, a first temperature sensor disposed near the first end of the heating chamber, a second temperature sensor disposed near the second end of the heating chamber, a flow sensor configured to detect a flow of water and disposed near the heating chamber, and a controller connected to the first and second temperature sensors, the flow sensor, and the heating element. The controller is configured to have a set point temperature, to detect temperature and flow data from the first and second temperature sensors, and the flow sensor, and to provide as output a power setting to the heating element.
142 Citations
19 Claims
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1. A system comprising:
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a liquid storage device, the liquid storage device comprising a liquid storage device power supply and a liquid storage device heating element; an inlet pipe connected to an outlet of the liquid storage device; and a fluid heating device comprising; a fluid heating device power supply; an inlet; an outlet; a heating chamber disposed between the inlet and the outlet; a fluid heating device heating element disposed inside the heating chamber; a flow sensor configured to detect a flow rate of fluid downstream of the inlet; a valve; and a first temperature sensor configured to detect a first temperature of the fluid downstream of the inlet; and a controller configured to control a switch to switch between providing a supply of power to the liquid storage device heating element via the liquid storage device power supply or providing a supply of power to the fluid heating device heating element via the fluid heating device power supply. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system comprising:
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a liquid storage device, the liquid storage device comprising a liquid storage device power supply and a liquid storage device heating element; an inlet pipe connected to an outlet of the liquid storage device; a fluid heating device having a fluid heating device power supply; an inlet connected to the inlet pipe; an outlet; a heating chamber disposed between the inlet and the outlet; a fluid heating device heating element disposed inside the heating chamber; a valve; a flow sensor configured to detect a flow rate of fluid downstream of the inlet; and a first temperature sensor configured to detect a first temperature of the fluid downstream of the inlet; a switch connected to the fluid heating device power supply and the liquid storage device power supply; and a controller configured to receive a set point temperature; maintain the fluid at the set point temperature by adjusting an amount at which the valve is opened as a function of the first temperature, the flow rate, and an available power of the fluid heating device power supply; and control the switch to switch between providing a supply of power to the liquid storage device heating element via the liquid storage device power supply or providing a supply of power to the fluid heating device heating element via the fluid heating device power supply. - View Dependent Claims (16, 17, 18, 19)
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Specification