PREMIX AIR HEATER
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United States of America Patent
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Issued Date -
May 24, 2012
app pub date -
Nov 14, 2011
filing date -
Nov 18, 2010
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
A gas-fired heater includes a gas supply line, an air supply line, a valve coupled to the gas supply line and a controller coupled to the valve. The controller is configured to control the valve to control a gas-air mixture. The gas-fired heater also includes a burner configured to receive the gas-air mixture and burn the gas-air mixture, and a heat exchanger coupled to the burner. The heat exchanger is configured to perform a heat exchange process and output heated air. The gas-fired heater further includes a combustion fan located downstream of the heat exchanger, the combustion fan being configured to pull or draw flue gases through the heat exchanger.
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