US3702533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot-gas machine comprising a heat transfer device
Assignee: US Philips Corp
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Filing: 1970-11-27
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Granted: 1972-11-14
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Expires: 1990-11-27
Abstract
Abstract A hot-gas machine in which a gaseous medium performs a closed thermodynamic cycle, includes a heat conveying device which is capable of conveying heat by means of an evaporation condensation process from a heat source to the heater of the machine. This device comprises at least two closed spaces containing conveying-medium and arranged one after the other in the direction of heat conveyance, the distal ends of these spaces being provided with heat transferring walls across which heat can be conducted from the heat source to the conveying medium, or the conveying medium can give off heat to the heater; the proximal ends of these spaces comprises further heat-transferring walls, between which a switching element is provided for the establishment of a thermal and variable contact between these further walls.
Inventors
- 👤 Adrianus Petrus Dirne
- 👤 George Albert Apoloni Asselman
- 👤 Herman Henricus Maria Van D Aa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:45
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/053; F02G1/045; F02G1/047; F02G1/055; F28; F28D; F28D15/00; F28D15/02; F28D15/06; F02G2254/00; F02G2254/20; F02G2258/00; F02G2258/10
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
191 words
A hot-gas machine such as a hot-gas reciprocating engine or turbine, in which a gaseous medium performs a closed thermodynamic cycle, said machine comprising a heat exchanger in which the cyclic medium receives heat from without from a heat source, such as a heat accumulator, and a heat transfer device being arranged between the heat source and the heat exchanger, and containing a heat-transporting medium which absorbs heat from the heat source while changing from the liquid to the vapor phase, and gives off heat to the heat exchanger while changing from the vapor to the liquid phase, characterized in that the heat transfer device comprises at least two closed spaces containing heat-transporting medium and arranged one after the other in the direction of heat transport, the distal ends of said spaces being provided with heat-passing walls through which heat from the heat source can be supplied to the transporting medium and through which the medium can give off heat to the heat exchanger, whereas the proximal ends of said spaces comprise further heat-passing walls between which a switching element is provided for establishing a thermal contact between said further walls.
Claim 2
Dependent Claim
191 words
A hot-gas machine such as a hot-gas reciprocating engine or turbine, in which a gaseous medium performs a closed thermodynamic cycle, said machine comprising a heat exchanger in which the cyclic medium receives heat from without from a heat source, such as a heat accumulator, and a heat transfer device being arranged between the heat source and the heat exchanger, and containing a heat-transporting medium which absorbs heat from the heat source while changing from the liquid to the vapor phase, and gives off heat to the heat exchanger while changing from the vapor to the liquid phase, characterized in that the heat transfer device comprises at least two closed spaces containing heat-transporting medium and arranged one after the other in the direction of heat transport, the distal ends of said spaces being provided with heat-passing walls through which heat from the heat source can be supplied to the transporting medium and through which the medium can give off heat to the heat exchanger, whereas the proximal ends of said spaces comprise further heat-passing walls between which a switching element is provided for establishing a thermal contact between said further walls.
Claim 3
Dependent Claim
28 words
A machine as claimed in claim 1 characterized in that each space comprises a porous mass of material which connects the heat-passing wall with the further heat-passing wall.
Claim 4
Dependent Claim
60 words
A machine as claimed in claim 1 characterized in that the switching element is formed by a reservoir having two heat-passing walls, each of which is in contact with a further heat-passing wall or which are formed also by a further heat-passing wall, the reservoir containing a heat transporting medium, the pressure and the quantity of which can be controlLed.
Claim 5
Dependent Claim
159 words
A machine as claimed in claim 3 characterized in that the heat transporting medium in the reservoir transports heat from a hot heat-passing wall to a cold heat-passing wall of the reservoir while changing from the liquid phase to the vapor phase at the absorption of heat from the hot heat-passing wall of the reservoir and while changing from the vapor phase to the liquid phase when giving off heat to the cold heat-passing wall of the reservoir, there being provided an auxiliary reservoir comprising a portion operating as a liquid space and a portion operating as a vapor space, the auxiliary reservoir being in open communication with the reservoir through a vapor duct connected with the vapor space, the auxiliary reservoir being capable of absorbing cold from a cold source for condensing and/or solidifying transporting medium in the liquid space or of absorbing heat from a heat source for melting and/or evaporating transporting medium in said liquid space.
Claim 6
Dependent Claim
74 words
A machine as claimed in claim 4 characterized in that the auxiliary reservoir also is in open communication with the reservoir via a liquid duct connected with the liquid space of the auxiliary reservoir, through which duct liquid transporting medium can flow from the auxiliary reservoir to the reservoir, said liquid duct comprising a liquid trap which can be cooled and in which liquid transporting medium can solidify for cutting off the liquid duct.
Claim 7
Dependent Claim
32 words
A machine as claimed in claim 5 characterized in that the liquid trap is formed by at least a portion of the liquid duct in which a porous filling mass is arranged,
Claim 8
Dependent Claim
27 words
A machine as claimed in claim 3, characterized in that the reservoir comprises a porous mass of material, which interconnects the heat passing walls of the reservoir.
Claim 9
Dependent Claim
29 words
A machine as claimed in claim 3 characterized in that the reservoir accommodates radiation screens for preventing heat transfer by radiation between the heat passing walls of the reservoir.
Claim 10
Dependent Claim
168 words
A hot-gas engine in which a gaseous medium performs a closed thermodynamic cycle, said machine operable with a heat source and including a heat-exchanger in which said gaseous medium receives heat from said source, and a heat transfer device which contains a heat-transporting medium and is disposed between the heat source and the heat exchanger, this transfer device comprising means defining at least two closed spaces containing said heat-transporting medium, these spaces positioned sequentially and thus having two remote, distal ends and two adjacent proximal ends, each of said ends comprising a heat-passing wall, whereby heat is cyclically transmitted through one distal end-wall from the heat source to said heat-transporting medium in one space, which medium then changes from liquid to vapor phase, and through the other distal end wall of said other space from said heat-transporting medium therein to the heat-exchanger, which medium then changes from vapor to liquid phase, said device further comprising a switching element between said proximal end-walls for establishing a thermal contact therebetween.
Claim 11
Dependent Claim
168 words
A hot-gas engine in which a gaseous medium performs a closed thermodynamic cycle, said machine operable with a heat source and including a heat-exchanger in which said gaseous medium receives heat from said source, and a heat transfer device which contains a heat-transporting medium and is disposed between the heat source and the heat exchanger, this transfer device comprising means defining at least two closed spaces containing said heat-transporting medium, these spaces positioned sequentially and thus having two remote, distal ends and two adjacent proximal ends, each of said ends comprising a heat-passing wall, whereby heat is cyclically transmitted through one distal end-wall from the heat source to said heat-transporting medium in one space, which medium then changes from liquid to vapor phase, and through the other distal end wall of said other space from said heat-transporting medium therein to the heat-exchanger, which medium then changes from vapor to liquid phase, said device further comprising a switching element between said proximal end-walls for establishing a thermal contact therebetween.
Claim 12
Dependent Claim
25 words
Apparatus according to claim 9 comprising a porous mass within said spaces which mass connects each remote wall with a proximal wall of each space.
Claim 13
Dependent Claim
44 words
Apparatus according to claim 9 wherein said switching element comprises a main reservoir having two heat-passing walls, each of which is in contact with a proximal heat-passing wall, the reservoir containing a heat-transporting medium, the pressure and the quantity of which can be controlled.
Claim 14
Dependent Claim
160 words
Apparatus according to claim 11 wherein said heat-transporting medium in the main reservoir transports heat from a hot heat-passing wall to a cold heat-passing wall of the main reservoir while changing from the liquid phase to the vapor phase at the absorption of heat from the hot heat-passing wall of the main reservoir and while changing from the vapor phase to the liquid phase when giving off heat to the cold heat-passing wall of the main reservoir, the apparatus further comprising an auxilIary reservoir having a portion operating as a liquid space and a portion operating as a vapor space, the auxiliary reservoir being in open communication with the main reservoir through a vapor duct connected with the vapor space, the auxiliary reservoir being capable of absorbing cold from a cold source for condensing and/or solidifying transporting medium in the liquid space or of absorbing heat from a heat source for melting and/or evaporating transporting medium in said liquid space.
Claim 15
Dependent Claim
71 words
Apparatus according to claim 12 wherein said auxiliary reservoir also is in open communication with the main reservoir via a liquid duct connected with the liquid space of the auxiliary reservoir, through which duct liquid transporting medium can flow from the auxiliary reservoir to the reservoir, said liquid duct comprising a liquid trap which can be cooled and in which liquid transporting medium can solidify for cutting off the liquid duct.
Claim 16
Dependent Claim
28 words
Apparatus according to claim 13 wherein said liquid trap is formed by at least a portion of the liquid duct in which a porous filling mass is arranged.
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) | 1975-11-14 | 1976-05-15 | 1976-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-14 | 1980-05-15 | 1980-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-14 | 1984-05-15 | 1984-11-14 | $7700.00 | Window Closed / Lapsed |