US 7,530,389 B2
Heat exchanger and evaporator
Nobuyoshi Yoshida, Wako (Japan); Satoshi Hanai, Haga-gun (Japan); and Takeshi Yamagami, Wako (Japan)
Assigned to Honda Motor Co., Ltd., Tokyo (Japan)
Filed on Apr. 06, 2004, as Appl. No. 10/819,851.
Claims priority of application No. 2003-104105 (JP), filed on Apr. 08, 2003.
Prior Publication US 2004/0200605 A1, Oct. 14, 2004
Int. Cl. F28D 7/10 (2006.01); H01M 8/04 (2006.01)
U.S. Cl. 165—154  [165/113; 165/145] 18 Claims
OG exemplary drawing
 
1. A heat exchanger comprising:
a casing;
a plurality of external cylinders, each of said plurality of external cylinders having a flattened cylindrical shape and comprising
a corrugated plate formed by bending a single plate so as to be corrugated,
side plates closing both lateral sides of the corrugated plate, and
a closed end portion,
wherein each of said external cylinders has an axis extending in a gravitational direction and is arranged inside the casing with a clearance formed between each of said external cylinders and an inner surface of the casing, and is supported in a cantilevered manner such that an end of each of said external cylinders is fixed to form a fixed end, wherein said plurality of external cylinders are coupled to each other at the fixed ends thereof;
a first fluid passage formed between the plurality of external cylinders and the casing;
a plurality of internal cylinders, each of said plurality of internal cylinders having a flattened cylindrical shape that is open at both ends, wherein each internal cylinder is arranged inside one of the plurality of external cylinders with a clearance formed between the internal cylinder and an inner surface of the one of the plurality of external cylinders and is supported in a cantilevered manner such that an end of each of the plurality of internal cylinders, corresponding to the fixed end of each of the plurality of external cylinders, is fixed;
a second fluid passage formed between each of said plurality of internal cylinders and each of said plurality of external cylinders, which is turned around at the closed end portion of the external cylinder; and
a liquid injection nozzle arranged above the closed end portion of one of said plurality of external cylinders as viewed in the gravitational direction.