Whirlpool Corporation

Gas Research Institute

Gas Technology Institute

Steven Casey

John A Bowman

Philip C Carbone

John Thomas Dieckmann

Warren James Ellis

Peter Francis Pescatore

Frederick E Chernetski

David Michael Martin

A gas-fired burner including a cylindrical burner housing having a premixed fuel/air opening. Disposed within the cylindrical burner housing is a cylindrical burner ring which forms at least one row of a plurality of burner ports. The cylindrical burner ring is sized relative to the burner housing such that an annular space is formed between the burner housing and the burner ring. Upper and lower annular rings extend between the burner ring and the burner housing, thereby enclosing the annular space. Disposed within the burner ring is a secondary air flow restrictor for controlling the flow of secondary air to the flame. A multi-finger grate having alternating long and short fingers is disposed above the burner housing.

Advanced commercial range burner

A clothes dryer has a heat source, preferably a heat pump, a rotating drum, and means to generate flow of air from the heat source to an inlet in the drum. At least two outlets are separated from each other in the drum to enable higher air flow rates without increase in pressure drop, resulting in reduced drying time.

Multiple outlet air path for a clothes dryer

A method is disclosed for operating a gas-fired heater to maintain temperature within a zone. The gas-fired heater is modulated between a higher firing rate and a lower firing rate within a pseudo steady-state mode until a current firing rate exceeds a predetermined maximum time period t . The gas-fired heater is then modulated between an updated higher firing rate and an updated lower firing rate within a transient mode until an updated current firing rate exceeds a predetermined maximum time period t . Finally, the higher firing rate and the lower firing rate are redefined in a diagnostic mode until the gas-fired heater returns to the pseudo steady-state mode.

Digital modulation for a gas-fired heater

Growing community of inventors

Arlington, MA, United States of America

Steven Casey