US3608628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating and cooling system
Assignee: Carrier Corp
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Filing: 1970-03-18
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Granted: 1971-09-28
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Expires: 1990-03-18
Abstract
Abstract An absorption refrigeration system having a cooling and a heating mode of operation. A generator, an air-cooled condenser, a two-stage air-cooled absorber, a two-stage adiabatic evaporator and an air-conditioning heat exchanger are connected to provide cooling. A heating mode of operation is provided wherein absorbent solution is heated in the generator and passed through the heat exchanger back to the generator to supply heat to a space being conditioned. The system embodies a plural trough solution scoop pump and a plural trough refrigerant or chilled water scoop pump mounted on a single shaft and driven by a single reversible motor to effect a change from cooling to heating and return.
Inventors
- 👤 Louis H Leonard Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:46
CPC Classifications
F; F04; F04D; F04D1/00; F04D1/12; F25; F25B; F25B15/00; F25B15/02; F25B15/025; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
322 words
A heating and cooling system having a heating mode of operation and a cooling mode of operation; A. said system in the cooling mode of operation comprising a generator for boiling absorbent solution to concentrate said solution; a condenser for condensing refrigerant vapor formed in said generator; an evaporator for evaporating refrigerant condensed in said condenser to provide cooling; an absorber for absorbing refrigerant vapor concentrated in said evaporator into absorbent solution formed in said generator; B. said system in the heating mode of operation comprising means including said generator for heating absorbent solution; means including a heat rejecting heat exchanger for passing heated absorbent solution in heat exchange relation with a heating load to provide heating; passage means for passing heated liquid absorbent solution from the generator to said heatrejecting heat exchanger for heating said heating load, thereby cooling said liquid absorbent solution; and passage means for passing cooled liquid absorbent solution from the heatrejecting heat exchanger to the generator for reheating therein; and C. scoop pump means for pumping liquid through passages in said system and for switching the system between heating and cooling mode operation; said scoop pump comprising a housing, a rotatable pan within said housing, a motor including reversing means connected for driving said rotatable pan, a first scoop disposed in said pan and having an eduction orifice facing in one direction and connected to conduit means for passing liquid to a location in said system to which it is desired to pass liquid only during the cooling mode of operation of said system, means to pass a liquid in said system into said pan, and means to control the direction of rotation of said pan to render said scoop operative in a first direction of rotation and inoperative upon a second direction of rotation of said pan to pump liquid from said pan to said location, depending on the desired mode of operation of said system.
Claim 2
Dependent Claim
322 words
A heating and cooling system having a heating mode of operation and a cooling mode of operation; A. said system in the cooling mode of operation comprising a generator for boiling absorbent solution to concentrate said solution; a condenser for condensing refrigerant vapor formed in said generator; an evaporator for evaporating refrigerant condensed in said condenser to provide cooling; an absorber for absorbing refrigerant vapor concentrated in said evaporator into absorbent solution formed in said generator; B. said system in the heating mode of operation comprising means including said generator for heating absorbent solution; means including a heat rejecting heat exchanger for passing heated absorbent solution in heat exchange relation with a heating load to provide heating; passage means for passing heated liquid absorbent solution from the generator to said heatrejecting heat exchanger for heating said heating load, thereby cooling said liquid absorbent solution; and passage means for passing cooled liquid absorbent solution from the heatrejecting heat exchanger to the generator for reheating therein; and C. scoop pump means for pumping liquid through passages in said system and for switching the system between heating and cooling mode operation; said scoop pump comprising a housing, a rotatable pan within said housing, a motor including reversing means connected for driving said rotatable pan, a first scoop disposed in said pan and having an eduction orifice facing in one direction and connected to conduit means for passing liquid to a location in said system to which it is desired to pass liquid only during the cooling mode of operation of said system, means to pass a liquid in said system into said pan, and means to control the direction of rotation of said pan to render said scoop operative in a first direction of rotation and inoperative upon a second direction of rotation of said pan to pump liquid from said pan to said location, depending on the desired mode of operation of said system.
Claim 3
Dependent Claim
108 words
A heating and cooling system as defined in claim 1 including a second scoop disposed in said pan and having an eduction orifice facing in the opposite direction from the first scoop, and connected to conduit means for passing a liquid to another location in said system to which It is desired to pass liquid only during the heating mode of operation of said system, whereby reversing rotation of said motor to rotate said pan in the second direction of rotation renders said second scoop operative to pump liquid to said other location in the system and renders said first scoop inoperative to pump liquid from said pan.
Claim 4
Dependent Claim
75 words
A heating and cooling system as defined in claim 2 wherein one of said scoops is connected to a location in said system for draining liquid into said pan when the pan is rotated in a direction to render said one scoop inoperative to pump liquid, whereby said one scoop performs a pumping function in one mode of operation of said system and a supplying function in the other mode of operation of the system.
Claim 5
Dependent Claim
151 words
A heating and cooling system as defined in claim 1 wherein said scoop pump includes a first pan and a second pan, said first pan having inlet means for supplying refrigerant cooled in the evaporator thereto, said first scoop being connected with conduit means for circulating cooled liquid refrigerant between the evaporator and the heat exchanger when said system is operating in the cooling mode and said pan is rotated in said first direction; said second pan having a first scoop disposed therein with an eduction orifice facing in said one direction and connected with conduit means for circulating absorbent solution between said absorber and said generator when said system is operating in the cooling mode; said first pan having a second scoop therein with an eduction orifice facing in a second direction for passing refrigerant to said generator for heating therein when said system is operating in the heating mode.
Claim 6
Dependent Claim
80 words
A heating and cooling system as defined in claim 4 wherein said second scoop in said second pan is connected with passage means for pumping liquid through the heat-rejecting heat exchanger to the generator, and wherein said second scoop pump pan includes a second scoop facing in said second direction for passing heated liquid from the generator to said first scoop pump pan for passage therefrom to the heat-rejecting heat exchanger when said system is operating in the heating mode.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |