Resources Contact Us Home
System and method for controlling outlet water temperature of an instantaneous water heater

Image Number 2 for United States Patent #5322216.

An apparatus accurately controls output water temperature of an instantaneous water heater to maintain a desired outlet temperature. A first electronic sensing device senses a flow of water through the heater, and an ignition sequence commences when flow has been detected. A second electronic sensing device senses an outlet water temperature of the heater, and a third electronic sensing device senses a midway water temperature of the heater. The burner output or outputs are controlled to maintain the desired outlet temperature, based on changes in water flow and incoming water temperature. With multiple burners, the burner outputs are staged to accurately control the output water temperature of the instantaneous water heater to maintain the desired outlet temperature.

  Recently Added Patents
DFPase enzymes from Aplysia californica
Method and apparatus for internet on-line insurance policy service
Permutational memory cells
Apparatus and method of preventing signal delay in display device
Authorization method for location based services
Multi-user remote health monitoring system with biometrics support
Measuring apparatus for measuring a physical property of a sample
  Randomly Featured Patents
Method for formation of contact plugs utilizing etchback
Method of forming double junction region and method of forming transfer transistor using the same
Electrical connector
Method and apparatus for the alignment of paper stacks in a printing press by optical beams reflected therefrom
Mass spectrometer and electric field source for mass spectrometer
Automated fastener machining system
Sofa frame
Method for the manufacture of improved efficiency tandem photovoltaic device and device manufactured thereby
High speed variable output power driver
Light emitting diode array driving apparatus