US 11,808,529 B2
Cast plate heat exchanger and method of making using directional solidification
Michael A. Disori, Glastonbury, CT (US); Steven J. Bullied, Pomfret Center, CT (US); Ryan C. Breneman, West Hartford, CT (US); John Marcin, Marlborough, CT (US); David J. Hyland, Portland, CT (US); William P. Stillman, Sturbridge, MA (US); and Carl R. Verner, Windsor, CT (US)
Assigned to RTX CORPORATION, Farmington, CT (US)
Filed by United Technologies Corporation, Farmington, CT (US)
Filed on Feb. 8, 2019, as Appl. No. 16/271,267.
Claims priority of provisional application 62/647,066, filed on Mar. 23, 2018.
Prior Publication US 2019/0293365 A1, Sep. 26, 2019
Int. Cl. F28F 1/26 (2006.01); B22D 27/04 (2006.01)
CPC F28F 1/26 (2013.01) [B22D 27/045 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A cast part comprising:
a first plate portion; and
a second plate portion separated from the first plate portion by an open space, wherein each of the first plate portion and the second plate portion including an outermost wall, each of the first plate portion and the second plate portion include a first inner wall, a second inner wall, and a third inner wall which define at least four internal passages, wherein any cross-sectional circular area spanning a portion of all of said four internal passages includes a ratio of interior empty space to inner wall space that is greater than zero and no greater than 3.6 and wherein the first plate portion and the second plate portion comprise a single unitary structure.