×

Tankless water heater

  • US 10,024,571 B2
  • Filed: 12/18/2017
  • Issued: 07/17/2018
  • Est. Priority Date: 10/17/2011
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method of a detecting a flow condition within a water heater by using a first temperature sensor and a second temperature sensor downstream from the first temperature sensor, the method comprising the steps of:

  • receiving a first temperature signal from the first temperature sensor at a first moment in time, the first temperature signal being representative of a first temperature;

    receiving a second temperature signal from the first temperature sensor at a second moment in time, the second temperature signal being representative of a second temperature;

    receiving a third temperature signal from the second temperature sensor at the first moment in time, the third temperature signal being representative of a third temperature;

    receiving a fourth temperature signal from the second temperature sensor at the second moment in time, the fourth temperature signal being representative of a fourth temperature;

    subtracting one of the first temperature and the second temperature from the other of the first temperature and the second temperature to yield a first temperature difference;

    subtracting one of the third temperature and the fourth temperature from the other of the third temperature and the fourth temperature to yield a second temperature difference;

    comparing the sum of the absolute value of the first temperature difference and the absolute value of the second temperature difference to a reference temperature.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×