US4291756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat accumulator
Assignee: Individual
•
Filing: 1979-07-17
•
Granted: 1981-09-29
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Expires: 1999-07-17
Abstract
Abstract A heat accumulator comprises a thermally-insulated reservoir full of paraffin wax mixture or other flowable or meltable heat-storage mass, heat-exchangers immersed in the mass, a heat-trap connected to one of the heat-exchangers, and a heat user connected to the other heat-exchanger. Pumps circulate fluids through the heat-trap and the heat-using means and the respective heat-exchangers, and a stirrer agitates and circulates the mass, and the pumps and the stirrer and electric motors driving these devices are all immersed in the mass.
Inventors
- 👤 Armand Bracht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:24
CPC Classifications
F; F28; F28D; F28D20/00; F28D20/02; F28D20/021; F24; F24D; F24D11/00; F24D11/002; F24D11/02; F24D11/0214; Y; Y02; Y02B; Y02B10/00; Y02B10/20; Y02B10/70; Y02E; Y02E60/00; Y02E60/14
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
76 words
A heat accumulator comprising in combination a reservoir, a flowable storage mass within said reservoir, thermal insulation means enclosing said reservoir, heat-transfer means for introducing heat into said mass, heat recovery means for recovering heat from said mass, a stirrer to stir said mass, and an electrical stirrer motor immersed in said mass for drawing said stirrer, said mass being a meltable organic compound which is solid at room temperature and being electrically insulative and lubricative.
Claim 2
Dependent Claim
76 words
A heat accumulator comprising in combination a reservoir, a flowable storage mass within said reservoir, thermal insulation means enclosing said reservoir, heat-transfer means for introducing heat into said mass, heat recovery means for recovering heat from said mass, a stirrer to stir said mass, and an electrical stirrer motor immersed in said mass for drawing said stirrer, said mass being a meltable organic compound which is solid at room temperature and being electrically insulative and lubricative.
Claim 3
Dependent Claim
25 words
An accumulator as claimed in claim 1, said mass being a paraffin with a melting point in the range of 44° C. to 50° C.
Claim 4
Dependent Claim
57 words
An accumulator as claimed in claim 1, said heat-transfer means comprising a first pump, said heat-recovery means comprising a second pump, there being a first pump motor for driving said first pump and a second pump motor for driving said second pump, both said first pump motor and said second pump motor being immersed in said mass.
Claim 5
Dependent Claim
35 words
An accumulator as claimed in claim 2, further comprising a pump circulating fluid through said heat-transfer means, and a motor driving said pump, both said motor and said pump being immersed in said flowable mass.
Claim 6
Dependent Claim
36 words
An accumulator as claimed in claim 1, said heat-transfer means comprising a first pipe coil, said heat-recovery means comprising a second pipe coil, both first pipe coil and second pipe coil being immersed in said mass.
Claim 7
Dependent Claim
45 words
An accumulator as claimed in claim 1, said heat transfer means being in the form of a heat-pump including an evaporator and valve means outside said reservoir, and all immersed in said mass a compressor and a compressor motor driving said compressor and a condenser.
Claim 8
Dependent Claim
35 words
An accumulator as claimed in claim 1, comprising two heat-exchangers immersed in said mass, one of said heat-exchangers being included in said heat-transfer means, the other of said heat-exchangers being included in said heat-recovery means.
References Cited (Backward Citations)
US2575325A
Cited
DE1551994A1
Cited
US3968660A
Cited
FR2308894A1
Cited
US4067314A
Cited
US4109702A
Cited
FR2363764A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |