Patent US4091994A successfully refreshed from Google Patents.
US4091994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat pump device
Assignee: SVENSKA GEOTHERM AB
•
Filing: 1976-03-04
•
Granted: 1978-05-30
•
Expires: 1996-03-04
Abstract
Abstract A heat pump for simultaneous heating of hot water for consumption and water for heating radiators comprising besides the heat pump in itself a water reservoir heated by the condenser of the heat pump. The water reservoir is enclosed by a fluid holding cover which forms a part of the heating radiator system. Means are provided for regulating the part of the water of the heating system that passes through the cover and the part of the water that passes through a by-pass branch around said cover. The relation between said two parts may be thermostatically regulated.
Inventors
- 👤 Henning Brinch Madsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:09
CPC Classifications
F; F25; F25B; F25B29/00; F24; F24H; F24H4/00; F24H4/02; F24H4/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
Heating device for simultaneous heating of water for heating radiators and hot consumption water comprising a heat pump, including a compressor, a vaporizer, a condenser and a thermostatic expansion valve connected in a closed circuit; a hot water receptacle for the hot consumption water and having inlet and outlet means for said consumption water; a cover surrounding the hot water receptacle and forming therewith a surrounding separate space wherein said condenser is disposed; means including a supply conduit and a return conduit for passing the radiator water through said space; a by-pass conduit from the supply circuit to the return conduit outside the cover; and control means for passing an adjustable amount of radiator water through said by-pass conduit.
Claim 2
Dependent Claim
119 words
Heating device for simultaneous heating of water for heating radiators and hot consumption water comprising a heat pump, including a compressor, a vaporizer, a condenser and a thermostatic expansion valve connected in a closed circuit; a hot water receptacle for the hot consumption water and having inlet and outlet means for said consumption water; a cover surrounding the hot water receptacle and forming therewith a surrounding separate space wherein said condenser is disposed; means including a supply conduit and a return conduit for passing the radiator water through said space; a by-pass conduit from the supply circuit to the return conduit outside the cover; and control means for passing an adjustable amount of radiator water through said by-pass conduit.
Claim 3
Dependent Claim
18 words
Heating device according to claim 1, wherein said control means comprises a three-way valve controlled by a motor.
Claim 4
Dependent Claim
46 words
Heating device according to claim 1 and further comprising a heat exchanger for heat exchange from a heat carrying medium of the heat pump leaving the condenser and to the radiator water before the entrance thereof into the space formed with said receptacle by said cover.
References Cited (Backward Citations)
US2060636A
Cited
US2266238A
Cited
US2860493A
Cited
US2751761A
Cited
US2780415A
Cited
US3188829A
Cited
US3548923A
Cited
US3959986A
Cited
US3916638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-29 | 1981-11-28 | 1982-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-29 | 1985-11-28 | 1986-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-29 | 1989-11-28 | 1990-05-30 | $7700.00 | Window Closed / Lapsed |