Air conditioning economizer control method and apparatus

Details Air conditioning economizer control method and apparatus Air conditioning economizer control method and apparatus

1983-05-09

1984-07-31

Tanner, Harry

Automatic temperature and humidity regulation

Mixing fluid of dissimilar temperature

Plenum type

236 49, 318160, G05D 2300, F24F 700

Patent

active

044625391

ABSTRACT:
An air conditioning economizer control method and apparatus for integrating the operation of the economizer with an air conditioning system is disclosed. An economizer position control arrangement is further disclosed incorporating a rotor locking circuit for maintaining the damper in position against a bias applied by mechanical means such as a spring. A multiple position indicator or multiple temperature sensor is utilized to modulate the position of the damper utilizing the motor for opening the damper, a spring for returning the damper and a rotor locking circuit for maintaining the damper in position. Multiple temperature sensors are also disclosed for making effective use of outdoor air when cooling through economizer operation is available. Staged cooling loads relative to outdoor ambient temperatures are utilized to select the appropriate mode of operation.

REFERENCES:
patent: 2150117 (1939-03-01), Griffith
patent: 2154511 (1939-04-01), Kingsland
patent: 3517881 (1970-06-01), Kohlbeck et al.

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