Heat exchanger, method of producing heat exchanger, and method of confirming blockage of heat exchanger

Patent metadata

Field	Value
Publication number	US-2023079473-A1
Application number	US-202117799837-A
Country	US
Kind code	A1
Filing date	Feb 24, 2021
Priority date	Feb 27, 2020
Publication date	Mar 16, 2023
Grant date	—

Abstract

A heat exchanger for heat exchange between a first fluid and a second fluid is provided with: a body part which is an additive manufactured body and includes a first passage through which the first fluid flows and a second passage through which the second fluid flows; and a covering part attached to the body part. The body part has a first opening portion of the first passage and a second opening portion of the second passage, and the covering part is attached to the body part so as to cover exposure of the first opening portion and the second opening portion.

First claim

1 . A heat exchanger for heat exchange between a first fluid and a second fluid, the heat exchanger comprising:
a body part which is an additive manufactured body and includes a first passage through which the first fluid flows and a second passage through which the second fluid flows; and a covering part attached to the body part, wherein the body part has a first opening portion of the first passage and a second opening portion of the second passage, and the covering part is attached to the body part so as to cover exposure of the first opening portion and the second opening portion.

2 . The heat exchanger according to claim 1 ,
wherein the covering part includes a lid member attached to the body part so as to cover the first opening portion and the second opening portion.

3 . The heat exchanger according to claim 2 ,
wherein the body part includes a first end surface and a second end surface disposed at both ends in a direction of extension of the first passage and the second passage, respectively, and wherein the lid member includes:
a first lid attached to the body part so as to cover the first end surface; and
a second lid attached to the body part so as to cover the second end surface.

4 . The heat exchanger according to claim 3 ,
wherein the first opening portion is formed on the first end surface, and the second opening portion is formed on the second end surface.

5 . The heat exchanger according to claim 1 ,
wherein the body part includes:
a first header passage through which the first fluid flows;
a first distribution passage connecting the first header passage and the first passage;
a second header passage through which the second fluid flows; and
a second distribution passage connecting the second header passage and the second passage,
wherein a first header passage wall defining the first header passage and a second header passage wall defining the second header passage respectively include:
a first fixed wall and a second fixed wall fixed to the body part; and
a first separation wall attached to the first fixed wall to define the first header passage and a second separation wall attached to the second fixed wall to define the second header passage, and
wherein the first opening portion is an opening portion of the first distribution passage in the first fixed wall, the second opening portion is an opening portion of the second distribution passage in the second fixed wall, and the covering part includes the first separation wall and the second separation wall.

6 . The heat exchanger according to claim 5 ,
wherein the heat exchanger includes a housing part into which the body part can be inserted, wherein the first separation wall and the second separation wall are provided to the housing part, and wherein when the body part is inserted into the housing part, the first separation wall and the second separation wall are attached to the first fixed wall and the second fixed wall, respectively.

7 . The heat exchanger according to claim 2 ,
wherein one of the covering part or the body part has a groove portion recessed so as to surround at least one of the first opening portion or the second opening portion with the covering part being attached to the body part, wherein the other of the covering part or the body part has a ridge portion into which the groove portion can be inserted, and wherein, with the covering part being attached to the body part, the ridge portion is inserted into the groove portion, and a resin seal member is disposed between the ridge portion and the groove portion.

8 . The heat exchanger according to claim 7 ,
wherein the ridge portion is configured to be elastically deformable in a depth direction of the groove portion.

9 . The heat exchanger according to claim 2 ,
wherein the covering part is attached to the body part via a seal member between the covering part and the body part, wherein the seal member includes:
an inner seal member disposed so as to surround at least one of the first opening portion or the second opening portion with the covering part being attached to the body part, and
an outer seal member disposed on an opposite side of the inner seal member from the at least one of the first opening portion or the second opening portion, and
wherein the outer seal member has a notch with a distance in a direction of extension of the outer seal member.

10 . The heat exchanger according to claim 9 ,
wherein the body part has a storage part communicating with the notch and capable of storing the first fluid or the second fluid.

11 . The heat exchanger according to claim 10 , comprising a detection part for detecting inflow of the first fluid or the second fluid into the storage part.

12 . The heat exchanger according to claim 11 , comprising:
a first open/close valve for supplying the first fluid to the first passage or stopping the supply of the first fluid; a second open/close valve for supplying the second fluid to the second passage or stopping the supply of the second fluid; and a control part electrically connected to the detection part, the first open/close valve, and the second open/close valve, wherein the control part closes the first open/close valve and the second open/close valve when a signal indicating detection of inflow of the first fluid or the second fluid into the storage part is transmitted from the detection part.

13 . The heat exchanger according to claim 7 ,
wherein the covering part and the body part are provided with flange portions which overlap each other with the covering part being attached to the body part.

14 . The heat exchanger according to claim 4 ,
wherein the second end surface is provided with at least one first closing wall disposed between adjacent second opening portions to close the first passage, wherein the first end surface is provided with at least one second closing wall disposed between adjacent first opening portions to close the second passage, and wherein the first lid is provided with a first seal member which abuts on the second closing wall, and the second lid is provided with a second seal member which abuts on the first closing wall.

15 . The heat exchanger according to claim 14 ,
wherein the second end surface is provided with a plurality of the first closing walls, and the first end surface is provided with a plurality of the second closing walls, and wherein the plurality of first closing walls are flush with each other on the second end surface, and the plurality of second closing walls are flush with each other on the first end surface.

16 . The heat exchanger according to claim 2 ,
wherein the first passage and the second passage that are adjacent to each other are separated by a partition wall, and wherein the lid member is provided with a seal member configured to be deformable by abutting on an end portion of the partition wall when the lid member is attached to the body part.

17 . The heat exchanger according to claim 16 ,
wherein the seal member includes:
a cavity portion disposed inside the seal member; and
an abutting portion which abuts on the end portion of the partition wall, and wherein when the abutting portion is pressed against the end portion of the partition wall, the seal member is deformed so that the cavity portion is crushed.

18 . The heat exchanger according to claim 17 ,
wherein the cavity portion is composed of a plurality of small cavities.

19 . The heat exchanger according to claim 16 ,
wherein the end p

Assignees

• Mitsubishi Heavy Ind Ltd

Inventors

• Hatanaka Masaya
• Nakaharai Hiroyuki
• Hara Nobuhide
• Uefuji Yoichi
• Eguchi Shunsaku
• Oda Takuo
• Tanimoto Koichi
• Kitamura Masashi
• Shinohara Tanehiro

Classifications

• B33Y10/00

  Processes of additive manufacturing · CPC title

• B33Y80/00 Primary

  Products made by additive manufacturing · CPC title

• F28D9/0006

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

• F28D9/0037

  the conduits for the other heat-exchange medium also being formed by paired plates touching each other (F28D9/0043 takes precedence) · CPC title

• Y02P10/25

  Process efficiency · CPC title