Heat exchanger core and heat exchanger

Patent metadata

Field	Value
Publication number	US-12228347-B2
Application number	US-202117798202-A
Country	US
Kind code	B2
Filing date	Feb 24, 2021
Priority date	Feb 27, 2020
Publication date	Feb 18, 2025
Grant date	Feb 18, 2025

Abstract

In a header of a heat exchanger core, a header passage includes: at least one radial passage extending along a radial direction, and a plurality of circumferential passages branched from each radial passage and communicating with one or more of the axial passages, respectively. The flow passage area of each radial passage is smaller in a second position than in a first position, where the second position is inward of the first position in the radial direction.

First claim

The invention claimed is:

1. A heat exchanger core, comprising:
a core body including a plurality of axial passages extending along an axial direction; and a header adjacent to at least one end portion of the core body in the axial direction and having a header passage communicating with the plurality of axial passages,
wherein the header passage includes:
at least one radial passage extending along a radial direction, and a plurality of circumferential passages branched from each radial passage and communicating with one or more of the axial passages, respectively,

wherein a flow passage area of each radial passage is smaller in a second position than in a first position, where the second position is inward of the first position in the radial direction,
wherein at least one opening is formed by the at least one radial passage on an outer peripheral surface of the heat exchanger core in the header, and
wherein a total area of opening areas of each opening is equal to or smaller than a total area of areas of the plurality of circumferential passages when viewed from the axial direction.

2. The heat exchanger core according to claim 1 ,
wherein at least one opening is formed by the at least one radial passage on an outer peripheral surface of the heat exchanger core in the header, and
wherein an opening dimension along the axial direction of each opening is one or more times an opening dimension along a circumferential direction of each opening.

3. A heat exchanger core, comprising:
a core body including a plurality of axial passages extending along an axial direction; and a header adjacent to at least one end portion of the core body in the axial direction and having a header passage communicating with the plurality of axial passages,
wherein the header passage includes:
at least one radial passage extending along a radial direction, and
a plurality of circumferential passages branched from each radial passage and communicating with one or more of the axial passages, respectively,

wherein a flow passage area of each radial passage is smaller in a second position than in a first position, where the second position is inward of the first position in the radial direction,
wherein the at least one radial passage is formed such that at least one of two end portions of the radial passage along the axial direction has a circumferential dimension that decreases outward along the axial direction.

4. A heat exchanger core, comprising:
a core body including a plurality of axial passages extending along an axial direction; and a header adjacent to at least one end portion of the core body in the axial direction and having a header passage communicating with the plurality of axial passages,
wherein the header passage includes:
at least one radial passage extending along a radial direction, and
a plurality of circumferential passages branched from each radial passage and communicating with one or more of the axial passages, respectively,

wherein a flow passage area of each radial passage is smaller in a second position than in a first position, where the second position is inward of the first position in the radial direction,
wherein the header includes a first header adjacent to the one end portion of the core body in the axial direction and a second header adjacent to another end portion of the core body in the axial direction, and
wherein an area increase rate of the flow passage area of the at least one radial passage increasing from an inner side to an outer side in the radial direction differs between the at least one radial passage in the first header and the at least one radial passage in the second header.

5. The heat exchanger core according to claim 3 ,
wherein at least one opening is formed by the at least one radial passage on an outer peripheral surface of the heat exchanger core in the header, and
wherein an opening dimension along the axial direction of each opening is one or more times an opening dimension along a circumferential direction of each opening.

6. The heat exchanger core according to claim 5 ,
wherein a total area of opening areas of each opening is equal to or smaller than a total area of areas of the plurality of circumferential passage when viewed from the axial direction.

7. A heat exchanger, comprising:
the heat exchanger core according to claim 1 ; and
a casing accommodating the heat exchanger core.

Assignees

• Mitsubishi Heavy Ind Ltd

Inventors

• Nakaharai Hiroyuki
• Hara Nobuhide
• Uefuji Yoichi
• Tanimoto Koichi
• Hatanaka Masaya
• Eguchi Shunsaku
• Oda Takuo

Classifications

• F28D7/10

  the conduits being arranged one within the other, e.g. concentrically {(multiple wall tubes for leak detection F28F1/003)} · CPC title

• B21D53/06

  of metal tubes · CPC title

• B22F5/10

  of articles with cavities or holes, not otherwise provided for in the preceding subgroups · CPC title

• B22F10/20

  Direct sintering or melting · CPC title

• F28F2255/18

  sintered · CPC title