Fin and bending type heat exchanger having the fin

Patent metadata

Field	Value
Publication number	US-10539374-B2
Application number	US-201515304170-A
Country	US
Kind code	B2
Filing date	Jan 22, 2015
Priority date	Apr 16, 2014
Publication date	Jan 21, 2020
Grant date	Jan 21, 2020

Abstract

A fin and a bending type heat exchanger having the fin includes a first header pipe, a second header pipe, a flat pipe and the fin. The first header pipe and the second header pipe have bending sections. The fin extends generally in a wavy shape along a longitudinal direction and includes a main section and a connecting section, the main section and the connecting section are connected in series so as to make the connecting section form a wave crest and a wave trough, and the fin is divided into a first end portion, a second end portion, and a central portion between the first end portion and the second end portion along a transverse direction, in which the connecting section of the central portion, forming the wave crest and the wave trough, is connected with the flat pipe, and a gap exists between the connecting section, forming the wave crest and/or the wave trough, of at least one of the first end portion and the second end portion and the flat pipe within the bending section.

First claim

What is claimed is:

1. A bending type heat exchanger, comprising:
a first header pipe and a second header pipe spaced apart from each other and having bending sections in one-to-one correspondence;
a plurality of flat pipes, each of the plurality of flat pipes having two ends connected with the first header pipe and the second header pipe respectively; and
a fin disposed between adjacent flat pipes and having a width smaller than or equal to a width of the flat pipes in a transverse direction, wherein the fin extends generally in a wavy shape along a longitudinal direction and comprises a main section and a connecting section, the main section and the connecting section are connected in series so as to make the connecting section form a wave crest and a wave trough, and the fin is divided into a first end portion, a second end portion, and a central portion between the first end portion and the second end portion along the transverse direction;
wherein the connecting section of the central portion is connected with the flat pipes, and a gap exists between the connecting section of at least one of the first end portion and the second end portion and the flat pipes within the bending sections;
wherein the connecting section of at least one of the first end portion and the second end portion and the connecting section of the central portion are cut apart each other through a longitudinal kerf, the connecting section of at least one of the first end portion and the second end portion is cut open through a transverse kerf so that the connecting section of at least one of the first end portion and the second end portion is divided into a first connecting portion and a second connecting portion, and the first connecting portion and the second connecting portion are bent in a direction away from the flat pipes and towards the main section of at least one of the first end portion and the second end portion.

2. The bending type heat exchanger as set forth in claim 1 , wherein a gap exists between the first end portion of the fin and the flat pipes both at a wave crest side and a wave trough side within the bending sections or between the second end portion of the fin and the flat pipes both at a wave crest side and a wave trough side within the bending sections.

3. The bending type heat exchanger as set forth in claim 1 , wherein a relationship among a width a1 of the first end portion, a width a2 of the second end portion, and a width V of the central portion satisfies: 0≤a1≤1.5V, 0≤a2≤1.5V.

4. The bending type heat exchanger as set forth in claim 1 , wherein a relationship among a material thickness d of the fin, a height H of the fin, a height h1 of a notch at a wave crest side and a height h2 of the notch at a wave trough side satisfies: d≤h1≤0.35H, d≤h2≤0.35H.

5. A fin, extending generally in a wavy shape along a longitudinal direction and comprising a main section and a connecting section, wherein the main section and the connecting section are connected in series so as to make the connecting section form a wave crest and a wave trough, and the fin is divided into a first end portion, a second end portion, and a central portion between the first end portion and the second end portion along a transverse direction, wherein:
a notch is formed in at least one of the first end portion and the second end portion of the fin at a wave crest side and/or a wave trough side, wherein the notch is formed by one of the following methods:
the connecting section of at least one of the first end portion and the second end portion and the connecting section of the central portion are cut apart from each other through a longitudinal kerf, the connecting section of at least one of the first end portion and the second end portion is cut open through a transverse kerf so that the connecting section of at least one of the first end portion and the second end portion is divided into a first connecting portion and a second connecting portion, and the first connecting portion and the second connecting portion are bent in a direction adjacent to the main section of the at least one of the first end portion and the second end portion;
wherein the transverse kerf extends in a whole length of the connecting section of at least one of the first end portion and the second end portion.

6. The fin as set forth in claim 5 , wherein the notch is formed in the first end portion of the fin both at the wave crest side and the wave trough side as well as in the second end portion of the fin both at the wave crest side and the wave trough side.

7. The fin as set forth in claim 5 , wherein a relationship among a width a1 of the first end portion, a width a2 of the second end portion, and a width V of the central portion satisfies: 0≤a1≤1.5V, 0≤a2≤1.5V.

8. The fin as set forth in claim 5 , wherein a relationship among a material thickness d of the fin, a height H of the fin, a height h1 of the notch at a wave crest side and a height h2 of the notch at a wave trough side satisfies: d≤h1≤0.35H, d≤h2≤0.35H.

Assignees

• Sanhua Hangzhou Micro Channel Heat Exchanger Co Ltd

Inventors

• Liu Chao
• He Yan
• Dong Zhiming
• Fu Huilai

Classifications

• F28F1/12

  the means being only outside the tubular element · CPC title

• F28D1/053

  the conduits being straight · CPC title

• F28D2001/0273

  having special shape, e.g. curved, annular · CPC title

• F28F1/22

  the means having portions engaging further tubular elements · CPC title

• F28F2260/02

  having microchannels · CPC title