Patent US3734636A successfully refreshed from Google Patents.
US3734636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump for heating and cooling system
Assignee: Carrier Corp
•
Filing: 1971-05-27
•
Granted: 1973-05-22
•
Expires: 1991-05-27
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
- 👤 L Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:04
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: 4
Claim 1
Independent Claim
196 words
A combined pump and valve apparatus for controlling the flow of liquid in a system, said apparatus comprising a housing, a rotatable pan mounted for rotation therein, a reversable electric motor including means to reverse the direction of rotation of said electric motor, said electric motor being connected to rotate said pan in a direction corresponding with the direction of rotation of the motor; a first stationary scoop extending into said pan having an eduction orifice facing in one direction of rotation of said pan; a second stationary scoop extending into said pan having an eduction orifice facing opposite said one direction of rotation of said pan; a stationary discharge conduit extending toward said pan and being positioned for discharging liquid therein; and means for actuating said electric motor to run in said one direction of rotation when liquid flow through said second scoop is desired and to actuate said electric motor to run in the other direction when liquid flow through said first scoop is desired, whereby liquid from said discharge conduit is selectively pumped into either said first or said second scoop depending on the selected direction of rotation of said reversable electric motor.
Claim 2
Dependent Claim
196 words
A combined pump and valve apparatus for controlling the flow of liquid in a system, said apparatus comprising a housing, a rotatable pan mounted for rotation therein, a reversable electric motor including means to reverse the direction of rotation of said electric motor, said electric motor being connected to rotate said pan in a direction corresponding with the direction of rotation of the motor; a first stationary scoop extending into said pan having an eduction orifice facing in one direction of rotation of said pan; a second stationary scoop extending into said pan having an eduction orifice facing opposite said one direction of rotation of said pan; a stationary discharge conduit extending toward said pan and being positioned for discharging liquid therein; and means for actuating said electric motor to run in said one direction of rotation when liquid flow through said second scoop is desired and to actuate said electric motor to run in the other direction when liquid flow through said first scoop is desired, whereby liquid from said discharge conduit is selectively pumped into either said first or said second scoop depending on the selected direction of rotation of said reversable electric motor.
Claim 3
Dependent Claim
41 words
A combined pump and valve assembly as defined in claim 1 wherein said scoop pump pan is axially divided into a plurality of scoop pump pans, each having a scoop and an inlet passage for pumping a plurality of liquid streams.
Claim 4
Dependent Claim
41 words
A combined pump and valve assembly as defined in claim 1 wherein said scoop pump pan is divided into a plurality of concentric scoop pump pans, each having a scoop and an inlet passage for pumping a plurality of liquid streams.
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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |