Automatic control for an air conditioning system
Abstract
Abstract A CONTROL CIRCUIT FOR AN AIR CONDITIONING SYSTEM INCLUDING A REFRIGERATION UNIT COMPRISING A MOTOR-DRIVEN COMPRESSOR, A CONDENSER, AN EVAPORATOR, EXPANSION MEANS, AND MEANS TO SUPPLY HEAT EXCHANGE MEDIA TO THE CONDENSER AND EVAPORATOR OF SAID REFRIGERATION UNIT. A PRESSURE-ACTUATED SWITCH WILL PREVENT THE CIRCUIT SUPPLYING POWER TO OPERATE THE COMPRESSOR MOTOR FROM BEING ENERGIZED IF THE PRESSURE DIFFERENTIAL BETWEEN THE SUCTION SIDE OF THE COMPRESSOR AND DISCHARGE SIDE OF THE COMPRESSOR EXCEEDS A PREDETERMINED POINT. MEANS RESPONSIVE TO A THERMAL CONDITION OF THE AREA BEING SERVED BY THE SYSTEM WILL ENERGIZE THE HEAT EXCHANGE MEDIUM SUPPLY MEANS TO THE CONDENSER EVEN THROUGH THE COMPRESSOR MAY BE INOPERABLE BECAUSE OF AN UNSATISFACTORY PRESSURE DIFFERENTIAL. THE FLOW OF HEAT EXCHANGE MEDIUM WILL SUBSTANTIALLY EQUALIZE THE PRESSURES ENABLING THE COMPRESSOR CIRCUIT TO BE COMPLETED.
Inventors
- 👤 Vincent T Barry
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |