# US 11,079,181 B2 · Cast plate heat exchanger with tapered walls > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,079,181 B2 - Document ID: US11079181B2 - Status: Granted - Kind: B2 - Application number: 16/292,692 - Filed: 2019-03-05 - Published: 2019-11-07 - Granted: 2021-08-03 - Earliest claimed: 2018-05-03 - Assignees: Raytheon Technologies Corporation - Applicants: United Technologies Corporation - Inventors: Michael A. Disori; Alexander Broulidakis; William P. Stillman; David Donald Chapdelaine; Peter E. Gunderson; Dave J. Hyland - Web page: https://patentgrep.com/patent/US11079181B2 ## CPC - F28D 1/053: the conduits being straight - F28D 1/05383: {with multiple rows of conduits or with multi-channel conduits (F28D1/05391 takes precedence)} - F28F 1/025: {with variable shape, e.g. with modified tube ends, with different geometrical features (F28F1/06, F28F1/08, F28F9/16, F28F9/18 take precedence)} - F28F 1/10: Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F1/06, F28F1/08) - F28F 7/02: Blocks traversed by passages for heat-exchange media {(F28D7/0008 takes precedence)} - F28F 9/02: Header boxes; End plates - F28D 2021/004: {for engine or machine cooling systems} - F28F 2009/0292: {with fins} - F28F 2225/04: for conduits - F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general) - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) ## Abstract In a featured embodiment, a heat exchanger includes a plate including a plate portion having outer walls. A plurality of internal passages extend between end portions. A ratio between an outer wall cross-sectional thickness at one of the end portions and a cross-sectional wall thickness of the outer wall within the plate portion is greater than 2.5 and no more than 10. An inlet manifold is attached to the inlet end. An outlet manifold is attached to the outlet end. ## Claims ### Claim 1 A heat exchanger comprising: a plate including a plate portion, an inlet end portion and an outlet end portion, the plate portion having outer walls and a plurality of internal passages extending between the inlet end portion and the outlet end portion, wherein a ratio between an outer wall cross-sectional thickness at one of the inlet end portion or the outlet end portion and a cross-sectional wall thickness of the outer wall within the plate portion is greater than 2.5 and no more than 10, wherein the plate portion includes a plate width between a leading edge and a trailing edge, an end width between outer surfaces of the peripheral walls in the same direction as the plate width with the end width greater than the plate width and a tapered transition between the plate width and the end width at one of the inlet end portion or the outlet end portion, wherein the tapered transition includes an increasing wall thickness in a direction from the plate portion toward the at least one of the inlet end portion or the outlet end portion; an inlet manifold attached to the inlet end portion; and an outlet manifold attached to the outlet end portion, wherein each of the inlet end portion and the outlet end portion include a face surrounded by peripheral walls and the peripheral walls define the outer wall cross-sectional thickness. ### Claim 2 (depends on 1) The heat exchanger as recited in claim 1, wherein the leading edge includes a contour that extends into the tapered transition. ### Claim 3 (depends on 2) The heat exchanger as recited in claim 2, wherein a thickness of the plate portion is less than a thickness of the inlet end portion or the outlet end portion. ### Claim 4 (depends on 2) The heat exchanger as recited in claim 2, wherein the face includes a plurality of openings within a common plane and the peripheral wall extends outward from the common plane. ### Claim 5 (depends on 4) The heat exchanger as recited in claim 4, including a tapered inlet around each of the plurality of openings. ### Claim 6 (depends on 1) The heat exchanger as recited in claim 1, including a joint between an outer surface of each of the inlet end portion and the outlet end portion and an inner surface of a corresponding one of the inlet manifold and the outlet manifold. ### Claim 7 (depends on 6) The heat exchanger as recited in claim 6, wherein a wall thickness of the corresponding one of the inlet manifold and outlet manifold through a joint plane is less than a wall thickness of the corresponding one of the inlet end portion and the outlet end portion. ### Claim 8 (depends on 1) The heat exchanger as recited in claim 1, wherein the plate is a single unitary part including the plate portion, the inlet end portion and the outlet end portion. ### Claim 9 A heat exchanger comprising: a plate including a plate portion, an inlet end portion and an outlet end portion, the plate portion having outer walls, a plurality of internal passages extending between the inlet portion and the outlet end portion and a tapered transition between the plate portion and at least one of the inlet end portion or the outlet end portion, wherein the tapered transition includes an increasing wall thickness in a direction from the plate portion toward the at least one of the inlet end portion or the outlet end portion; an inlet manifold attached to the inlet end portion; and an outlet manifold attached to the outlet end portion. ### Claim 10 (depends on 9) The heat exchanger as recited in claim 9, wherein a ratio between an outer wall cross-sectional thickness at one of the inlet end portion or the outlet end portion and a cross-sectional wall thickness of the outer wall within the plate portion is greater than 2.5 and no more than 10. ### Claim 11 (depends on 9) The heat exchanger as recited in claim 9, wherein the plate portion includes a plate width between a leading edge and a trailing edge and an end width between outer surfaces of at least one of the inlet end portion or the outlet end portion, wherein the plate width is less than the end width. ### Claim 12 (depends on 11) The heat exchanger as recited in claim 11, wherein the leading edge includes a contour that extends into the tapered transition. ### Claim 13 (depends on 12) The heat exchanger as recited in claim 12, wherein a thickness of the plate portion is less than a thickness of either the inlet end portion or the outlet end portion. ### Claim 14 (depends on 9) The heat exchanger as recited in claim 9, wherein the inlet end portion and the outlet end portion each include a plurality of openings within a common plane and a peripheral wall extending about the plurality of openings. ### Claim 15 (depends on 14) The heat exchanger as recited in claim 14, including a tapered inlet around each of the plurality of openings. ### Claim 16 (depends on 14) The heat exchanger as recited in claim 14, including a joint between an outer surface of each of the inlet end portion and the outlet end portion and an inner surface of a corresponding one of the inlet manifold and the outlet manifold, wherein a wall thickness of the corresponding one of the inlet manifold and outlet manifold through the joint plane is less than a wall thickness of the corresponding one of the inlet end portion and the outlet end portion. ### Claim 17 (depends on 9) The heat exchanger as recited in claim 9, wherein the plate is a single unitary part including the plate portion and end portions.