Temperature control using infrared sensing
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United States of America Patent
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-
Jan 11, 2005
Grant Date -
Jul 29, 2004
app pub date -
Jan 27, 2003
filing date -
Jan 27, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system and method for sensing and controlling the temperature of a heating, ventilation and air conditioning (HVAC) system utilizes an infrared sensor. The infrared sensor is used to detect temperature over several different areas on an evaporator surface on which a cold spot may occur. More preferably, the infrared sensor continuously scans the whole surface on the air outlet side of the evaporator. The sensed temperature is used to detect any cold spots that may dynamically form on the evaporator surface. The system is controlled in response to the detected temperature.
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