US3747362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Space cooling system
Assignee: Individual
•
Filing: 1972-03-29
•
Granted: 1973-07-24
•
Expires: 1992-03-29
Abstract
Abstract In order to combine the advantages of the well known evaporative cooler with the advantages of the equally well known conventional refrigeration system, the water recirculated over the pads of the cooler is refrigerated sufficiently to dehumidify the outside air drawn through the cooling pads. The evaporator coils may be placed directly in the cooler reservoir, in the return water flow path between the pads and the reservoir, or in the supply water path above a single pad. The refrigeration sub-system may be operated under control of a humidistat such that the cooling system may function as an ordinary evaporative cooler when the ambient humidity is sufficiently low.
Inventors
- 👤 J Mercer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:22
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F1/00; F24F1/02; F24F1/022
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
163 words
A system for cooling a space comprising: a. a housing, said housing having an air inlet disposed at the bottom thereof for receiving ambient air to be conditioned and an air outlet for issuing conditioned air into the space; b. a horizontally oriented, air permeable pad disposed across said air inlet; c. a water reservoir disposed beneath said pad; d. a refrigeration subsystem including evaporator coils, said refrigeration subsystem being conventionally configured to cool said evaporator coils, 1. said evaporator coils being disposed within said housing above said pad; e. a pump for withdrawing water from said reservoir; f. liquid conduit means coupled to said pump and discharging within said housing and above said evaporator coils such that water pumped from said reservoir flows downwardly to contact said coils and then wet said pad; and g. fan means for forcing air from outside said housing, serially: 1. through said inlet, 2. across said pad, 3. across said coils, and 4. through said outlet.
Claim 2
Independent Claim
163 words
A system for cooling a space comprising: a. a housing, said housing having an air inlet disposed at the bottom thereof for receiving ambient air to be conditioned and an air outlet for issuing conditioned air into the space; b. a horizontally oriented, air permeable pad disposed across said air inlet; c. a water reservoir disposed beneath said pad; d. a refrigeration subsystem including evaporator coils, said refrigeration subsystem being conventionally configured to cool said evaporator coils, 1. said evaporator coils being disposed within said housing above said pad; e. a pump for withdrawing water from said reservoir; f. liquid conduit means coupled to said pump and discharging within said housing and above said evaporator coils such that water pumped from said reservoir flows downwardly to contact said coils and then wet said pad; and g. fan means for forcing air from outside said housing, serially: 1. through said inlet, 2. across said pad, 3. across said coils, and 4. through said outlet.
Claim 3
Dependent Claim
3 words
across said pad,
Claim 4
Dependent Claim
3 words
across said pad,
Claim 5
Dependent Claim
45 words
The cooling system of claim 1 in which further includes a humidistat for sensing ambient humidity and in which said refrigeration system is coupled to and controlled by said humidistat whereby said refrigeration system operates only when the ambient humidity rises above a predetermined level.
Claim 6
Dependent Claim
17 words
The cooling system of claim 2 in which said refrigeration subsystem further includes a compressor and condenser.
Claim 7
Dependent Claim
4 words
across said coils, and
Claim 8
Dependent Claim
4 words
across said coils, and
Claim 9
Dependent Claim
3 words
through said outlet.
Claim 10
Dependent Claim
3 words
through said outlet.
References Cited (Backward Citations)
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Cited
US2165979A
Cited
US2259541A
Cited
US2654232A
Cited
US2672024A
Cited
US2703228A
Cited
US3153332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |