Heat exchanger

Patent metadata

Field	Value
Publication number	US-2021025661-A1
Application number	US-202017071261-A
Country	US
Kind code	A1
Filing date	Oct 15, 2020
Priority date	Apr 19, 2018
Publication date	Jan 28, 2021
Grant date	—

Abstract

A heat exchanger includes a duct, a core portion, and a caulking plate. The duct has an inlet and an outlet. The core portion is housed in the duct in a state where cooling plates and cooling fins are stacked in a stacking direction. The caulking plate has a frame shape corresponding to an opening shape of the inlet and the outlet and brazed to the inlet and the outlet. The caulking plate is interposed between the duct and a tank to fix the tank. A first joint between the duct and the core portion and a second joint between the duct and the caulking plate are distanced from each other in the stacking direction by a predetermined distance. The duct has a rib between the first joint and the second joint or at the second joint.

First claim

What is claimed is:

1 . A heat exchanger comprising:
a duct having an inlet to introduce a first fluid and an outlet to discharge the first fluid; a core portion having a plurality of cooling plates and a plurality of cooling fins alternately stacked with each other in a stacking direction and housed in the duct, in which heat is exchanged between the first fluid and a second fluid, a flow path being defined for the second fluid by the cooling plates; and a caulking plate having a frame shape corresponding to an opening shape of the inlet and the outlet and brazed to the inlet and the outlet, the caulking plate being interposed between the duct and a tank to fix the tank, wherein a first joint between the duct and the core portion and a second joint between the duct and the caulking plate are distanced from each other in the stacking direction by a predetermined distance, the duct has a rib on a surface of the duct intersecting the stacking direction and the rib is located between the first joint and the second joint, and the rib extends in a longitudinal direction of the core portion intersecting the stacking direction and a flow direction of the first fluid.

2 . The heat exchanger according to claim 1 , wherein
the rib is a buffer rib located between the first joint and the second joint to be a deformation start point when the duct is deformed.

3 . The heat exchanger according to claim 1 , wherein the rib is in contact with the caulking plate to fix a position of the caulking plate with respect to the duct.

4 . The heat exchanger according to claim 1 , wherein
the duct has a stopper that comes into contact with a surface of the caulking plate facing the core portion, and the stopper is in contact with the caulking plate to fix a position of the caulking plate with respect to the duct.

5 . A heat exchanger comprising:
a duct having an inlet to introduce a first fluid and an outlet to discharge the first fluid; a core portion having a plurality of cooling plates and a plurality of cooling fins alternately stacked with each other in a stacking direction and housed in the duct, in which heat is exchanged between the first fluid and a second fluid, a flow path being defined for the second fluid by the cooling plates; and a caulking plate having a frame shape corresponding to an opening shape of the inlet and the outlet and brazed to the inlet and the outlet, the caulking plate being interposed between the duct and a tank to fix the tank, wherein a first joint between the duct and the core portion and a second joint between the duct and the caulking plate are distanced from each other in the stacking direction by a predetermined distance, the duct has a reinforcing rib at the second joint, and the reinforcing rib straddles an end of the second joint facing the core portion to suppress deformation of the duct.

Assignees

• Denso Corp

Inventors

• Suzuki Kazutaka
• Asano Taichi

Classifications

• F28F2275/04

  by brazing · CPC title

• F28F2275/122

  by crimping, caulking or clinching · CPC title

• F28D9/0031 Primary

  the conduits for one heat-exchange medium being formed by paired plates touching each other (F28D9/0012, F28D9/0025, F28D9/0081, F28D9/04 take precedence) · CPC title

• F28F2265/26

  for allowing differential expansion between elements · CPC title

• F28D2021/0082

  Charged air coolers · CPC title