Heat exchanger

Patent metadata

Field	Value
Publication number	US-2023366641-A1
Application number	US-202118043952-A
Country	US
Kind code	A1
Filing date	Aug 24, 2021
Priority date	Sep 18, 2020
Publication date	Nov 16, 2023
Grant date	—

Abstract

A plate-stacked heat exchanger is proposed which exchanges heat with high heat exchange efficiency in flow paths each including an internal space bulging outward between two heat transfer plates. A flow path forming portion includes a plurality of flow path bulging portions that bulges outward of a heat exchanger plate and forms heat exchange flow paths of a first heating medium therein, and a header portion includes a communication hole communicating with the header portion of an adjacent heat exchanger plate, and a flow path forming portion-side expanded portion expanding from the communication hole toward the flow path forming portion, and the flow path forming portion-side expanded portion communicates with the plurality of heat exchange flow paths. Consequently, heat can be exchanged in a greater width. Therefore, a high heat exchange rate can be obtained.

First claim

1 . A heat exchanger comprising: a heat exchanger core through which a first heating medium flows; and a case covering the heat exchanger core, the heat exchanger being configured to exchange heat between the first heating medium and a second heating medium flowing between the outside of the heat exchanger core and the inside of the case, wherein
the heat exchanger core includes a core unit in which a plurality of heat exchanger plates each obtained by laying a first plate member and a second plate member on top of each other are stacked in a stacking direction, each of the heat exchanger plates includes a flow path forming portion and a header portion, each of the flow path forming portions includes a plurality of flow path bulging portions that bulges outward of the heat exchanger plate and forms a heat exchange flow path of the first heating medium therein, each of the header portions includes a communication hole communicating with the header portion of the adjacent heat exchanger plate, and a flow path forming portion-side expanded portion expanding from the communication hole toward the flow path forming portion, and each of the flow path forming portion-side expanded portions communicates with a plurality of the heat exchange flow paths.

2 . The heat exchanger according to claim 1 , wherein
the each of the header portions includes a header bulging portion bulging outward on one of the first plate member and the second plate member, and a header flat portion that is flat on the other, and in the core unit, the header bulging portion of the heat exchanger plate and the header flat portion of its adjacent heat exchanger plate are stacked in such a manner as to face each other.

3 . The heat exchanger according to claim 2 , wherein the flow path bulging portions are in contact with the flow path bulging portions and/or the header bulging portion of the adjacent heat exchanger plate.

4 . The heat exchanger according to claim 2 , wherein in the header portion provided at each end of the flow path forming portion of the each of the heat exchanger plates, the header bulging portions are provided to only one of the first plate member and the second plate member.

5 . The heat exchanger according to claim 2 , wherein in the header portion provided at each end of the flow path forming portion of the each of the heat exchanger plates, the header bulging portion is provided to each of the first plate member and the second plate member.

6 . The heat exchanger according to claim 1 , wherein the communication holes are provided at diagonal corner portions of the each of the heat exchanger plates.

7 . The heat exchanger according to claim 1 , wherein
the flow path bulging portions have an approximately rectangular cuboid or arcuate bulging shape, and each of the flow path bulging portions of the first plate member and the second plate member is substantially symmetrical in a longitudinal direction with respect to a circulation direction of the first heating medium.

8 . The heat exchanger according to claim 1 , wherein
the heat exchanger core includes end plates at two ends of the core unit in the stacking direction, and the end plates are in contact with the header portions and/or the flow path bulging portions of the heat exchanger plates located at the two ends.

9 . The heat exchanger according to claim 1 , wherein
an inner peripheral portion of the case is configured in such a manner as to be in contact with an outer peripheral portion of the heat exchanger core, a second inlet and a second outlet that are an inlet and an outlet of the second heating medium are provided to an outer surface of the case, and one or more second inlets and one or more second outlets are included.

10 . The heat exchanger according to claim 9 , wherein
the case includes, therein, a partition portion substantially parallel to a plane of the plate where the heat exchanger plate extends, in any position in the stacking direction of the core unit, and a flow path of the second heating medium is partitioned by the partition portion in the stacking direction.

11 . The heat exchanger according to claim 1 , wherein
the heat exchanger core includes: the heat exchanger plates; and a partition plate being the heat exchanger plate provided with a closed portion, and the partition plate is provided with the closed portion in the communication hole of at least one of the first plate member and the second plate member.

12 . The heat exchanger according to any claim 1 , wherein the header portion includes a reinforcing member therein.

13 . The heat exchanger according to claim 12 , wherein
a tubular member substantially in contact with inner peripheral surfaces of the stacked communication holes is inserted as the reinforcing member into the heat exchanger core, and the tubular member is provided with a plurality of hole portions aligned with a plurality of the header portions aligned in the stacking direction.

Assignees

• Sanden Corp

Inventors

• Kaneko Akira

Classifications

• F28D1/0308

  the conduits being formed by paired plates touching each other (F28D1/0358 takes precedence) · CPC title

• F28F1/045

  with assemblies of stacked elements · CPC title

• F28F3/046 Primary

  the deformations being linear, e.g. corrugations · CPC title

• F28D9/0006

  the plate-like or laminated conduits being enclosed within a pressure vessel · CPC title

• F28D9/02

  the heat-exchange media travelling at an angle to one another (F28D9/04 takes precedence) · CPC title