US4385725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat pump assembly
Assignee: Kloeckner Humboldt Deutz AG
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Filing: 1981-02-20
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Granted: 1983-05-31
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Expires: 2001-02-20
Abstract
Abstract A heat pump assembly comprises a refrigeration circuit including an evaporator, a compressor and a capacitor, and an internal combustion engine for driving the compressor and being coupled therewith by a detachable coupling. A heating circuit is disposed in communication with the capacitor and includes a space heat exchanger for the heating of space by heat absorbed from the capacitor, and further includes the engine, a heat exchanger in a communication with an exhaust pipe extending from the engine, and a retarder driven by the engine for the torque loading of same. Space is thus further heated by the engine and the emissions therefrom, and the retarder comprises an electric braking arrangement by which energy to be dissipated is converted into heat by eddy currents produced in a solid conductor.
Inventors
- 👤 Franz Pischlinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:02
CPC Classifications
F; F02; F02G; F02G5/00; F24; F24H; F24H4/00; F24H4/02; F25; F25B; F25B27/00; Y; Y02; Y02B; Y02B30/00; Y02B30/52; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
159 words
A heat pump arrangement comprising, a refrigeration circuit including a compressor and a condensor, a heating circuit including a heating medium and an internal combustion engine for driving said compressor through a detachable coupling, said heating circuit being in heat exchange communication with said refrigeration circuit through said condensor, for cooling said engine and exhaust gas thereof, said heating circuit also including a braking aggregate directly driven by said engine, said braking aggregate comprising an eddy-current retarder which is directly driven by said engine, a separately powered governing system is provided for controlling the excitation of said eddy-current retarder, said retarder including a rotor mounted on the crankshaft of said engine and further including a stator having heating medium passages which are connected to cooling passages of said engine located in the engine casing, said heating medium passages and said cooling passages being directly connected into said heating circuit whereby the heating medium of said heating circuit flows therethrough.
Claim 2
Dependent Claim
159 words
A heat pump arrangement comprising, a refrigeration circuit including a compressor and a condensor, a heating circuit including a heating medium and an internal combustion engine for driving said compressor through a detachable coupling, said heating circuit being in heat exchange communication with said refrigeration circuit through said condensor, for cooling said engine and exhaust gas thereof, said heating circuit also including a braking aggregate directly driven by said engine, said braking aggregate comprising an eddy-current retarder which is directly driven by said engine, a separately powered governing system is provided for controlling the excitation of said eddy-current retarder, said retarder including a rotor mounted on the crankshaft of said engine and further including a stator having heating medium passages which are connected to cooling passages of said engine located in the engine casing, said heating medium passages and said cooling passages being directly connected into said heating circuit whereby the heating medium of said heating circuit flows therethrough.
Claim 3
Dependent Claim
22 words
The arrangement according to claim 1, wherein a separate retarder casing houses said retarder and is flange mounted to said engine casing.
Claim 4
Dependent Claim
40 words
The arrangement according to claim 1, wherein sensors are provided as input variables to said governing system, said sensors being capable of sensing the temperature of said engine, the space to be heated, the ambient air and said heating circuit.
Claim 5
Dependent Claim
20 words
The arrangement according to claim 3, wherein said governing system also controls the speed and load requirements of said engine.
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) | 1986-05-30 | 1986-11-29 | 1987-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-30 | 1990-11-29 | 1991-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-30 | 1994-11-29 | 1995-05-31 | $7700.00 | Window Closed / Lapsed |