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Gas Turbine Engine Heat Exchanger for Annular Flowpaths
| Content Provider | The Lens |
|---|---|
| Abstract | A heat exchanger has arcuate inlet (26) and outlet (28) manifolds and a plurality of tube banks (42), each tube bank coupling one of the inlet manifold outlets (40A) to an associated one of the outlet manifold inlets (40B). Each tube bank partially nests with one or more others of the tube banks and has: a first header (60) coupled to the associated inlet manifold outlet and the associated the outlet manifold inlet; a second header (62); and a plurality of tube bundles (64, 66, 68, 70) each having a first end coupled to the associated first header and a second end coupled to the associated second header. A flowpath from the each inlet manifold outlet passes sequentially through flowpath legs formed by each of the tube bundles in the associated tube bank to exit the tube bank to the associated outlet manifold inlet. |
| Related Links | https://www.lens.org/images/patent/EP/3845850/A1/EP_3845850_A1.pdf |
| Language | English |
| Publisher Date | 2021-07-07 |
| Access Restriction | Open |
| Alternative Title | Gasturbinentriebwerkswärmetauscher Für Ringförmige Strömungswege Échangeur De Chaleur De Moteur À Turbine À Gaz Pour Voies D'écoulement Annulaires |
| Content Type | Text |
| Resource Type | Patent |
| Date Applied | 2020-12-21 |
| Agent | Dehns |
| Applicant | Raytheon Tech Corp |
| Application No. | 20216218 |
| Claim | A heat exchanger comprising: an arcuate inlet manifold (26) having: at least one inlet (22); and a plurality of outlets (40A); an arcuate outlet manifold (28) having: at least one outlet (24); and a plurality of inlets (40B); and a plurality of tube banks (42), each tube bank (42) coupling one of the inlet manifold outlets (40A) to an associated one of the outlet manifold inlets (40B), each of the tube banks (42) partially nesting with one or more others of the tube banks (42), wherein each of the tube banks (42) comprises: a first header (60) coupled to the associated inlet manifold outlet (40A) and the associated the outlet manifold inlet (40B); a second header (62); and a plurality of tube bundles (64, 66, 68, 70) each having a first end coupled to the associated first header (60) and a second end coupled to the associated second header (62), with a flowpath from the associated inlet manifold outlet (40A) passing sequentially through flowpath legs formed by each of the tube bundles (64, 66, 68, 70) in the associated tube bank (42) to exit the tube bank (42) to the associated outlet manifold inlet (40B). The heat exchanger of claim 1 wherein: each first header (60) comprises: a first end (80) coupled to the associated inlet manifold outlet (40A); a second end (82) coupled to the associated outlet manifold inlet (40B); and at least one dividing wall (84, 96) between an upstream end of one said leg and a downstream end of the next adjacent downstream leg; and each second header (62) comprises: a closed first end (90); a closed second end (92); and at least one dividing wall (94) between a downstream end of one said leg and an upstream end of the next adjacent upstream leg. The heat exchanger of claim 1 or 2 wherein: each tube bank (42) comprises a plurality of modules (320), each module (320) comprising: a first header segment (400) having: an inlet end (404A); an outlet end (404B); and a barrier (406) between the inlet end (404A) and the outlet end (404B) and separating an inlet plenum from an outlet plenum; a second header segment (402) having: a closed first end (422A); and a closed second end (422B); a first of the tube bundles (64, 66, 68, 70) extending between the inlet plenum and the second header segment (402); and a second of the tube bundles (64, 66, 68, 70) extending between the second header segment (402) and the outlet plenum; the first header segments (400) are secured end-to-end to form the first header (60); and the second header segments (402) are secured end-to-end to form the second header (62). The heat exchanger of claim 3 wherein: each said first header segment inlet end (404A) and outlet end (404B) are flanged (410); adjacent first segment header flanges (410) are secured to each other via band clamps (412); each said second header segment first end (422A) and second end (422B) are flanged; and adjacent second segment header flanges are secured to each other via band clamps. The heat exchanger of any preceding claim further comprising: a first tie ring (350) structurally connecting first ends of the second headers (62) of the tube banks (42); and a second tie ring (350) structurally connecting second ends of the second headers (62) of the tube banks (42). The heat exchanger of any preceding claim wherein: the arcuate inlet manifold (26), arcuate outlet manifold (28), and plurality of tube banks (42) each consist essentially of nickel-based superalloy; and/or the arcuate inlet manifold (26) and arcuate outlet manifold (28) each are continuously curving. The heat exchanger of any preceding claim, wherein the arcuate inlet manifold (26) and arcuate outlet manifold (28) extend at least 300° about a central axis (10), and wherein, optionally, the arcuate inlet manifold (26) and arcuate outlet manifold (28) extend 300° to 360° about the central axis (10). The heat exchanger of any preceding claim wherein: the arcuate inlet manifold (26) and arcuate outlet manifold (28) taper in transverse internal cross section away from the respective inlet manifold inlet (22) and outlet manifold outlet (24). The heat exchanger of any preceding claim, wherein the plurality of tube banks (42) is at least 4 tube banks, and wherein, optionally, the plurality of tube banks (42) is 20 to 60 tube banks. The heat exchanger of any preceding claim wherein: each of the tube banks (42) nests with at least four others of the tube banks (42); and/or each of the tube banks (42) circumferentially partially or completely overlaps at least four others of the tube banks (42); and/or each of the tube banks (42) circumferentially overlaps at least four others of the tube banks (42) at a given circumferential location. The heat exchanger of any preceding claim, wherein each of the tube banks (42) comprises at least four said tube bundles (64, 66, 68, 70), and wherein, optionally, each of the tube banks (42) comprises four to eight said tube bundles (64, 66, 68, 70). The heat exchanger of any preceding claim wherein: each of the tube bundles (64, 66, 68, 70) comprises at least 20 tubes (72); and/or the tubes (72) in each of the tube bundles (64, 66, 68, 70) are arranged in a two dimensional array. The heat exchanger of any preceding claim wherein: the tubes (72) of the tube banks (64, 66, 68, 70) are arcuate; and/or the tubes (72) of the tube banks (64, 66, 68, 70) are continuously curving arcuate; and/or the tubes (72) of the tube banks (64, 66, 68, 70) are of circular cross-section. A turbine engine including the heat exchanger of any preceding claim and further comprising: a gas path (902) passing combustion gas across exteriors of the tube banks (64, 66, 68, 70). The turbine engine of claim 14 further comprising: a recuperator (801)comprising: a turbine (870) coupled to the at least one outlet (24) of the outlet manifold (28); and a compressor (890) having an outlet coupled to the at least one inlet (22) of the inlet manifold (26); wherein, optionally: the recuperator (801) comprises a generator driven by the turbine (870); and/or the recuperator (801) comprises a supercritical carbon dioxide or other cryogenic working fluid. |
| CPC Classification | HEAT-EXCHANGE APPARATUS; NOT PROVIDED FOR IN ANOTHER SUBCLASS; IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT Climate Change Mitigation Technologies Related To Transportation Steam Engine Plants;Steam Accumulators;Engine Plants Not Otherwise Provided For;Engines Using Special Working Fluids Or Cycles GAS-TURBINE PLANTS;AIR INTAKES FOR JET-PROPULSION PLANTS;CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS |
| Extended Family | 159-282-139-611-944 083-723-845-091-910 076-750-196-519-12X 105-059-552-249-626 046-771-888-321-215 163-298-538-570-490 017-523-060-296-713 |
| Patent ID | 3845850 |
| Inventor/Author | Staubach Joseph B Boucher Amanda Jean Chandler Jesse M |
| IPC | F28D1/047 F28D7/00 F28D21/00 |
| Status | Active |
| Simple Family | 159-282-139-611-944 083-723-845-091-910 076-750-196-519-12X 105-059-552-249-626 046-771-888-321-215 017-523-060-296-713 163-298-538-570-490 |
| CPC (with Group) | F28D7/005 F28D1/047 F28D2021/0026 F28D2021/0021 Y02T50/60 F01K25/103 F02C7/16 F01K23/06 F02C1/05 F28D7/04 |
| Issuing Authority | European Patent Office (EPO) |
| Kind | Patent Application Publication |
