Temperature control using infrared sensing

Details Temperature control using infrared sensing Temperature control using infrared sensing

2005-01-11

2005-01-11

Tanner, Harry B. (Department: 3744)

Refrigeration

Automatic control

By accumulation on freezing surface, e.g., ice

C062S156000, C062S227000, C374S124000

Reexamination Certificate

active

06840053

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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“Introduction to Infrared Thermometry”, Technical Solutions, TS-104, Ircon, Inc., Jul. 2001, pp. 1-7.

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