Heat exchanger

Patent metadata

Field	Value
Publication number	US-2025383159-A1
Application number	US-202519236932-A
Country	US
Kind code	A1
Filing date	Jun 12, 2025
Priority date	Jun 13, 2024
Publication date	Dec 18, 2025
Grant date	—

Abstract

A heat exchanger includes a laminated structure of alternately stacked first and second plates forming separate flow paths for two fluids. The stack is enclosed in a bottomed tubular case with an open end sealed by a base plate. The case features sidewall-mounted inlet and outlet ports for a first fluid. Each plate has a protruding outer flange taper-fitted to adjacent plates.

First claim

1 . A heat exchanger comprising:
a laminated body including a plurality of first plates and a plurality of second plates alternately stacked in a stacking direction to define alternating flow paths for a first fluid and a second fluid, respectively; a bottomed tubular case configured to house the laminated body, the case having an opening on one side; and
a base plate disposed on the open side of the case;
wherein:
the case includes an inlet and an outlet for the first fluid, the inlet and the outlet located in a sidewall portion extending along the stacking direction,
each of the first plates and the second plates includes an outer circumferential flange portion protruding from an outer circumferential edge in the stacking direction,
the outer circumferential flange portion of each plate is taper-fitted and joined to the outer circumferential flange portion of an adjacent plate on the protruding side,
an opening portion is disposed between adjacent first and the second plates in the stacking direction to allow fluid communication for the first fluid, and
a blockage portion is disposed between the plates that define the flow path for the second fluid at a position opposite the inlet or outlet.

2 . The heat exchanger according to claim 1 , wherein:
a first distribution channel extends in the stacking direction sequentially to the inlet or outlet, the first distribution channel disposed in the case, and at least a portion of the plurality of the first plate or the second plate includes an extension portion that reduces an open area of the opening portion continuously in the outer circumferential flange portion.

3 . The heat exchanger according to claim 1 , wherein:
the outer circumferential flange portion includes a fluid guide wall extending along a flow direction of the first fluid and the second fluid within the laminated body, and the fluid guide walls of adjacent first and second plates are joined together.

4 . The heat exchanger according to claim 3 , wherein the outer circumferential flange portion extends around the outer circumferential edge of the first plate and the second plate, except for positions opposite a first dispensing flow path.

5 . The heat exchanger according to claim 1 , wherein the blockage portion comprises:
a first blockage portion of the first plate, the first blockage portion including:
a first wall portion extending in a direction opposite to the protruding side; and
a first joining portion extending from a distal end of the first wall portion toward the inlet or outlet; and
a second blockage portion of the second plate, the second blockage portion including:
a second wall portion extending in the protruding direction; and
a second joining portion extending from a distal end of the second wall portion toward the inlet or outlet,
wherein the first joining portion and the second joining portion are overlapped and joined together.

6 . The heat exchanger according to claim 5 , wherein one of the first blockage portion or the second blockage portion further comprises a cover portion extending from one of the joining portions and covering a distal end of the other joining portion from a side of the inlet.

7 . The heat exchanger according to claim 2 , wherein:
the outer circumferential flange portion comprises a fluid guide wall extending along a flow direction of the first fluid and the second fluid within the laminated body, and and the fluid guide walls of adjacent first and second plates are joined together.

8 . The heat exchanger according to claim 7 , wherein the outer circumferential flange portion extends around the outer circumferential edge of the first plate and the second plate, except for positions opposite a first dispensing flow path.

9 . The heat exchanger according to claim 2 , wherein the blockage portion comprises:
a first blockage portion of the first plate, the first blockage portion including:
a first wall portion extending in a direction opposite to the protruding side; and
a first joining portion extending from a distal end of the first wall portion toward the inlet or outlet; and
a second blockage portion of the second plate, the second blockage portion including:
a second wall portion extending in the protruding direction; and
a second joining portion extending from a distal end of the second wall portion toward the inlet or outlet,
wherein the first joining portion and the second joining portion are overlapped and joined together.

10 . The heat exchanger according to claim 9 , wherein one of the first blockage portion or the second blockage portion further comprises a cover portion extending from one of the joining portions and covering a distal end of the other joining portion from a side of the inlet.

Assignees

• Mahle Int Gmbh

Inventors

• Ariyama Masahiro
• Tanaka Junko
• Goto Masaki
• Suzuki Satoshi

Classifications

• F28D9/0075 Primary

  the plates having openings therein for circulation of the heat-exchange medium from one conduit to another · CPC title

• F28F2280/06

  Adapter frames, e.g. for mounting heat exchanger cores on other structure and for allowing fluidic connections · CPC title

• F28D9/005 Primary

  the plates having openings therein for both heat-exchange media · CPC title