US3555840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant condensate dilution in absorption refrigeration systems
Assignee: Carrier Corp
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Filing: 1968-12-18
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Granted: 1971-01-19
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Expires: 1988-12-18
Abstract
Abstract A HEATING AND COOLING SYSTEM EMPLOYING A TWO-STAGE ADIABATIC EVAPORATOR AND A TWO-STAGE ABSORBER HAVING A COUNTERFLOW RELATIONSHIP WITH THE EVAPORATOR. A VAPOR PRESSURE CONTROL PASSAGE IS PROVIDED FOR CONTROLLING THE VAPOR PRESSURE OF THE REFRIGERANT IN THE EVAPORATOR UNDER LOW AMBIENT OPERATING CONDITIONS. A HEATING PASSAGE IS PROVIDE TO MIX ABSORBENT SOLUTION AND REFRIGERANT WHICH IS HEATED IN THE GENERATOR TO SUPPLY HEATING AT A DESIRED LOCATION. A REFRIGERANT CONDENSATE SOLUTION PASSAGE IS PROVIDED TO DILUTE THE REFRIGERANT CONDENSATE IN THE CONDENSER LIQUID HEADER WITH DILUTED REFRIGERANT DURING PERI- ODS OF LOW AMBIENT TEMPERATURE OPERATION IN THE COOLING MODE.
Inventors
- 👤 Louis H Leonard Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:02
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/04; F25B49/043; F25B15/00; F25B15/02; F25B15/06; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
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References 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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |