Heat exchanger

Patent metadata

Field	Value
Publication number	US-2021199392-A1
Application number	US-201917273755-A
Country	US
Kind code	A1
Filing date	Sep 3, 2019
Priority date	Sep 11, 2018
Publication date	Jul 1, 2021
Grant date	—

Abstract

A heat exchanger includes a heat exchanger body having a plurality of layer portions each having a plurality of flow paths, and having a configuration in which adjacent layer portions are joined to each other, an inflow header being configured that a fluid is introduced into the inflow header to flow into the plurality of flow paths, an outflow header being configured that a fluid flowing through the plurality of flow paths merges, a cover portion covering all joint portions of the adjacent layer portions or all joint portions of components of layer portions, the joint portions exposed on an outer surface of the heat exchanger body at a portion other than a portion where the inflow header and the outflow header are disposed, and a lead-out portion connected to the cover portion and forming an internal flow path communicating with a space between the cover portion and the heat exchanger body. The lead-out portion is configured to emit a fluid to a predetermined region set in advance.

First claim

1 . A heat exchanger comprising:
a heat exchanger body having a plurality of layer portions each having a plurality of flow paths, and having a configuration in which adjacent layer portions are joined to each other in a state where the plurality of layer portions are laminated; an inflow header fixed to the heat exchanger body, the inflow header being configured that a fluid is introduced into the inflow header to flow into the plurality of flow paths; an outflow header fixed to the heat exchanger body, the outflow header being configured that a fluid flowing through the plurality of flow paths merges; a cover portion covering all joint portions of the adjacent layer portions or all joint portions of components of the layer portions, the joint portions being exposed on an outer surface of the heat exchanger body at a portion other than a portion where the inflow header and the outflow header are disposed; and a lead-out portion connected to the cover portion and forming an internal flow path communicating with a space or a gap between the cover portion and the heat exchanger body, wherein the lead-out portion is configured to emit a fluid to a predetermined region set in advance.

2 . The heat exchanger according to claim 1 , wherein
the cover portion is welded directly or indirectly to the heat exchanger body on an entire periphery of the cover portion, and the lead-out portion is fixed to the cover portion by welding or screw fastening.

3 . The heat exchanger according to claim 1 , wherein
the cover portion includes a cover member disposed on one side surface of the heat exchanger body, and the cover member is fixed to the heat exchanger body at a plurality of fixing portions.

4 . The heat exchanger according to claim 3 , wherein the cover member is configured to be divided into a plurality of members, and each of the plurality of members is fixed to the heat exchanger body on the one side surface.

5 . The heat exchanger according to claim 3 , wherein each of the plurality of fixing portions is provided with a weld material that is located in a plurality of welding holes formed in the cover member and that is fixed to the heat exchanger body.

6 . The heat exchanger according to claim 1 , wherein the cover portion is welded to a fixing member fixed to the heat exchanger body.

7 . The heat exchanger according to claim 6 , wherein the fixing member includes a buildup weld provided in advance on a fixing surface of the heat exchanger body.

8 . The heat exchanger according to claim 6 , wherein the fixing member includes a plate-like body fixed to the heat exchanger body.

9 . The heat exchanger according to claim 6 , wherein
the fixing member divides a space between the cover portion and the heat exchanger body into a plurality of spaces, and a communication means for communicating the plurality of spaces is provided.

10 . The heat exchanger according to claim 6 , wherein
the cover portion and the heat exchanger body are made of metal materials different from each other, and the fixing member is formed of a dissimilar joint welded to the cover portion and welded to the heat exchanger body.

11 . The heat exchanger according to claim 1 , wherein the lead-out portion is provided with a compressor for compressing a fluid flowing through the internal flow path of the lead-out portion.

12 . The heat exchanger according to claim 11 , wherein a buffer tank is disposed on a suction side of the compressor in the lead-out portion.

13 . The heat exchanger according to claim 1 , wherein a reinforcement rib is welded to the cover portion.

14 . The heat exchanger according to claim 1 , wherein a reinforcement rib is mechanically attached to the cover portion.

15 . The heat exchanger according to claim 1 , wherein the cover portion is reinforced by winding a steel band around the heat exchanger body and the cover portion.

16 . The heat exchanger according to claim 1 , wherein the cover portion includes one or a plurality of semi-cylindrical members.

17 . The heat exchanger according to claim 1 , wherein each of the plurality of layer portions has a partition plate, a corrugated plate brazed to the partition plate, and a side bar surrounding the corrugated plate.

18 . The heat exchanger according to claim 1 , wherein the adjacent layer portions are diffusion-bonded to each other.

Assignees

• Kobe Steel Ltd

Inventors

• Mitsuhashi Kenichiro
• Kogushi Takashi
• Yamada Masato
• Terada Susumu
• Noishiki Koji

Classifications

• F28F3/06

  the means being attachable to the element · CPC title

• F28F2275/06

  by welding · CPC title

• F28D9/0062 Primary

  the conduits for one heat-exchange medium being formed by spaced plates with inserted elements (F28D9/0012, F28D9/0025, F28D9/0081, F28D9/04 take precedence) · CPC title

• F28F11/00

  Arrangements for sealing leaky tubes and conduits (stopping flow from or in pipes in general F16L55/10) · CPC title

• F28F3/08

  Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning · CPC title