US3776305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer system
Assignee: United Aircraft Products Inc
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Filing: 1972-02-22
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Granted: 1973-12-04
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Expires: 1992-02-22
Abstract
Abstract A heat transfer system in which a fluid of substantial heat absorption qualities is caused to flow in successive heat absorption and heat dissipation phases, a latter having one or more differential modes. In the disclosed embodiment of the system, a cold plate-liquid boiler assembly provides flow paths for the successive phases, the differential heat dissipation modes being provided by the liquid boiler and by external cooling means alternatively included in a heat rejection circuit. Vent control apparatus associated with the liquid boiler tends to maintain a pressure therein conducive of boiling at selected temperature values.
Inventors
- 👤 C Simmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:33
CPC Classifications
F; F28; F28D; F28D17/00; F28D15/00; F28D15/02; F28D15/06; F28F; F28F27/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
162 words
A heat transfer system utilizing a flowing transport fluid to absorb heat at one or more locations and to dissipate absorbed heat at one or more other locations, including cold plate means for mounting heat generating components and a liquid boiler in which generated heat is released to stored heat sink liquid and subsequently liberated in steam form, said cold plate means comprising a pair of cold plates having outwardly disposing faces to mount heat generating components, said plates providing internal flow paths in which a flowing transport fluid is in a heat absorbing mode, means mounting said cold plates in such spaced, marginally sealed relation as to cause inwardly disposing faces thereof to define a reservoir for heat sink liquid therebetween, means for flowing recirculating transport fluid heated by passage through said cold plates in a heat dissipating mode through said reservoir in a segregated heat transfer relation to liquid contained therein, and means for venting created steam from said reservoir.
Claim 2
Dependent Claim
162 words
A heat transfer system utilizing a flowing transport fluid to absorb heat at one or more locations and to dissipate absorbed heat at one or more other locations, including cold plate means for mounting heat generating components and a liquid boiler in which generated heat is released to stored heat sink liquid and subsequently liberated in steam form, said cold plate means comprising a pair of cold plates having outwardly disposing faces to mount heat generating components, said plates providing internal flow paths in which a flowing transport fluid is in a heat absorbing mode, means mounting said cold plates in such spaced, marginally sealed relation as to cause inwardly disposing faces thereof to define a reservoir for heat sink liquid therebetween, means for flowing recirculating transport fluid heated by passage through said cold plates in a heat dissipating mode through said reservoir in a segregated heat transfer relation to liquid contained therein, and means for venting created steam from said reservoir.
Claim 3
Dependent Claim
46 words
A heat transfer system according to claim 1, said inwardly disposing faces of said cold plates defining walls of said reservoir whereby the transport fluid flowing in said plates is simultaneously in heat transfer relation to said heat generating components and to liquid in said reservoir.
Claim 4
Dependent Claim
34 words
A heat transfer system according to claim 1, characterized by means defining a flow circuit bringing a flowing transport fluid through said cold plates and in a sequential relation thereto through said liquid reservoir.
Claim 5
Dependent Claim
53 words
A heat transfer system according to claim 1, wherein the means mounting said cold plates includes a frame-like member to opposite faces of which said cold plates are attached, a portion of which is cut out to define in conjunction with opposing inwardly disposing faces of said cold plates the said liquid reservoir.
Claim 6
Dependent Claim
44 words
A heat transfer system according to claim 4, characterized in that the means flowing transport fluid through said reservoir includes heat transfer conduit means bridging the cutout portion of said frame-like member, said member providing internal passageway means to and from said conduit means.
Claim 7
Dependent Claim
41 words
A heat transfer system according to claim 5, wherein said cold plates, said frame-like member and said conduit means are joined together to form a unitary cold plate-liquid boiler assembly, said assembly providing inlet and outlet connections for said transport fluid.
Claim 8
Dependent Claim
47 words
A heat transfer system according to claim 6, wherein said assembly further provides connecting and cross over passages whereby fluid entering said inlet connection is directed through said cold plates in series order and is then directed by way of said conduit means to said outlet connection.
Claim 9
Dependent Claim
91 words
A heat transfer system according to claim 1, wherein a pod disposes in use in a flowing heat sink fluid, said pod being closed to confine said heat sink fluid to flow over the pod exterior, the recited elements of claim 1 being joined together to form a unitary cold plate-liquid boiler assembly, said assembly mounted within said pod, and means selectively to flow transport fluid heated by passage through said cold plates in a second heat dissipating mode into heat transfer relation with heat sink fluid flowing over said pod.
Claim 10
Dependent Claim
21 words
A heat transfer system according to claim 8, characterized by valve means controlling utilization of the said second heat dissipating mode.
Claim 11
Dependent Claim
87 words
A heat transfer system according to claim 8, wherein said last named means includes surface cooler means mounted to the exterior of said pod, said surface cooler means providing adjacent flow passages respectively for the heat sink fluid and for the transport fluid whereby the excess heat of one fluid may be rejected to the other by a convection-conduction-convection process, the cold plate-liquid boiler assembly connecting to said surface cooler means through said pod for a flow of transport fluid to and from said surface cooler means.
Claim 12
Dependent Claim
125 words
A heat transfer system according to claim 10, characterized by a fluid circuit interconnecting said cold plate-water boiler assembly and said surface cooler means, said circuit including valve controller means sensing a changing temperature of the transport fluid after flowing through said cold plates and sensing the same said changing temperature of the transport fluid after flowing through said surface cooler means and operable either in the presence of a predetermined low temperature of the transport fluid as it emerges from said cold plates or in the presence of a predetermined high temperature as it emerges from said surface cooler means to divert flow emerging from said cold plates directly into the first said heat dissipation mode in by-passing relation to said surface cooler means.
Claim 13
Dependent Claim
48 words
A heat transfer system according to claim 1, wherein said venting means is controlled to define a minimum low pressure in said reservoir and artificially to maintain relatively low pressures in said reservoir irrespective of relatively high ambient pressures to provide For low pressure boiling in said reservoir.
Claim 14
Dependent Claim
31 words
A heat transfer system according to claim 12, wherein said venting means includes a control valve closing in the presence of an absolute vapor pressure in said reservoir of selected value.
Claim 15
Dependent Claim
58 words
A heat transfer system according to claim 13, characterized by means artificially to reduce the environmental pressure in which said valve operates to provide conditions under which said valve may be set to modulate at vapor pressure conditions in said reservoir of lesser value than would be possible if said vapor pressure corresponded to that of ambient surroundings.
Claim 16
Dependent Claim
87 words
A heat transfer system according to claim 14, wherein said cold plate means is enclosed in a pod disposing in an exterior stream of flowing gas, the said means artificially to reduce the environmental pressure including an inclined ramp on said pod, the relatively elevated end of said ramp being the downstream end in relation to the direction of travel of the external stream of flowing gas, and including further a connection to sense the pressure at and immediately beyond the downstream end of said inclined ramp.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |