Heat exchanger

Patent metadata

Field	Value
Publication number	US-10520258-B2
Application number	US-201616060017-A
Country	US
Kind code	B2
Filing date	Nov 28, 2016
Priority date	Dec 9, 2015
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

A heat exchanger includes a case body and a heat exchange core, a first fluid channel is formed in the case body, a second fluid channel is formed in the heat exchange core, the heat exchange core includes a flat pipe, the second fluid channel is located in the flat pipe, the flat pipe includes a plurality of bending parts and a plurality of flat and straight parts; a first hole in communication with a first connection pipe and a second hole in communication with a second connection pipe are provided in the case body, the first hole partially corresponds to the bending parts on one side of the flat pipe or the flat and straight parts close to the bending parts, and the second hole partially corresponds to the bending parts on the other side or the flat and straight parts close to the bending parts.

First claim

What is claimed is:

1. A heat exchanger, comprising
a case body, and
a heat exchange core accommodated in the case body, wherein:
a first fluid channel is formed in the case body, a second fluid channel is formed in the heat exchange core, and the first fluid channel and the second fluid channel are isolated from each other, the heat exchange core comprises one or more flat pipes, the second fluid channel is located in the flat pipe, and the flat pipe comprises at least one first bending portion, at least one second bending portion and a plurality of flat straight portions, the first bending portion and the second bending portion are located at two opposite sides of the heat exchange core respectively, the adjacent two flat straight portions are roughly parallel with each other and keeps a distance of 0.5 mm to 6 mm from each other;
the case body is provided with an opening in communication with a space close to the first bending portion, a projection of the first bending portion and/or a part of the flat straight portions close to the first bending portion in a direction of an inner wall of the case body is at least partially coincident with the opening; and
the case body is provided with an opening in communication with a space close to the second bending portion, a projection of the second bending portion and/or a part of the flat straight portions close to the second bending portion in a direction of an inner wall of the case body is at least partially coincident with the opening.

2. The heat exchanger according to claim 1 , wherein the case body is provided with a first hole and a second hole both in communication with outside, the first hole is the opening provided at the case body and in communication with the space close to the first bending portion, the projection of the first bending portion and/or the part close to the first bending portion of the flat straight portions in the direction of the inner wall of the case body is at least partially coincident with the first hole or an opening of the first hole at the case body; and
the second hole is the opening provided at the case body and in communication with the space close to the second bending portion, the projection of the second bending portion and/or the part close to the second bending portion of the flat straight portions in the direction of the inner wall of the case body is at least partially coincident with the second hole or an opening of the second hole at the case body.

3. The heat exchanger according to claim 2 , wherein a minimum distance between adjacent two first bending portions or adjacent two second bending portions is greater than zero; the first bending portion comprises a plurality of sections of circular arcs connected smoothly, the first bending portion comprises a main bending portion, a first subsidiary bending portion and a second subsidiary bending portion, an end of the first subsidiary bending portion and an end of the second subsidiary bending portion at a same side are connected to two adjacent flat straight portions respectively, the main bending portion is located between the first subsidiary bending portion and the second subsidiary bending portion, and a radius R 1 of a circular arc of the main bending portion and a distance d 2 between two adjacent flat straight portions meet a relationship: R 1 <d 2 < 2 R 2 .

4. The heat exchanger according to claim 2 , wherein the first bending portion comprises a main bending portion and a subsidiary bending portion, two ends of the subsidiary bending portion are connected to the main bending portion and the flat straight portion, and two ends of the main bending portion are connected to the first subsidiary bending portion and the flat straight portion, an end of the main bending portion connected to the flat straight portion is tangent to the flat straight portion, and a diameter of the circular arc of the main bending portion is larger than the distance between two adjacent flat straight portions.

5. The heat exchanger according to claim 1 , wherein fins are arranged between two adjacent flat straight portions of the flat pipe, the fins are fixed to the flat pipe, and parts of the fins in contact with an inner wall of the case body are fixed to the inner wall of the case body, an end of the fins close to the first bending portion keeps a distance of 5 mm to 30 mm from the first bending portion, at least a part of an end of the flat straight portion close to the first bending portion is not provided with the fins, a projection of the part of the flat straight portion being not provided with the fins in the direction of the inner wall of the case body is at least partially coincident with the first hole, wherein the inner wall corresponds to the first hole.

6. The heat exchanger according to claim 5 , wherein the case body comprises a main case body, a first cover plate, a first distributing plate and a second cover plate, an opening end is arranged at each of two sides of the main case body, the two sides where the two opening ends are located are arranged adjacently, and the main case body is seal-fixed to the second cover plate, the distributing plate and the first cover plate are arranged at another opening end from inside out starting from the main case body, at least one distributing hole and at least one converging hole are arranged at the distributing plate, and the distributing hole is the first hole, the converging hole is the second hole; and
the distributing hole matches with the first cover plate, a first surface of the distributing plate opposite to the first cover plate is basically fitted and seal-fixed to a periphery of the first covet plate, a first chamber and a second chamber are formed between the distributing plate and the first cover plate, the first chamber and the second chamber are isolated from each other, the first chamber is in communication with the distributing hole, and the second chamber is in communication with the converging hole.

7. The heat exchanger according to claim 1 ,
wherein the case body comprises a main case body, a first cover plate and a distributing plate, an opening end is arranged at a side of the main case body, the distributing plate and the first cover plate are fixed at the opening end in sequence from inside out, starting from the main case body, and at least one distributing hole and at least one converging hole are arranged at the distributing plate, and the distributing hole is the first hole, the converging hole is the second hole; and
the distributing hole matches with the first cover plate, a first surface of the distributing plate facing the first cover plate is basically attached and seal-fixed to a periphery of the first covet plate, a first chamber and a second chamber are formed between the distributing plate and the first cover plate, the first chamber and the second chamber are isolated from each other, the first chamber is in communication with the distributing hole, and the second chamber is in communication with the converging hole.

8. The heat exchanger according to claim 1
wherein a minimum distance between two adjacent first bending portions or two adjacent second bending portions is greater than zero, the two adjacent first bending portions are arranged in a staggered manner, the two adjacent second bending portions are arranged in a staggered manner, and the minimum distance between two adjacent first bending portions is larger than a minimum distance between the first bending portion and the flat straight portion which are adjacent, the minimum distance between two adjacent second bending portions is greater than a minimum distance between the second bending portion and the flat straight portion which are adjacent.

9. The heat exch

Assignees

• Zhejiang Sanhua Automotive Components Co Ltd

Inventors

• Liu Bo
• Zou Jiang
• Yin Fangfang
• Lv Gang
• Zhang Rongrong
• Yin Yuting

Classifications

• F28F2230/00

  Sealing means · CPC title

• F28F9/0278

  in the form of stacked distribution plates or perforated plates arranged over end plates · CPC title

• F28F1/02

  Tubular elements of cross-section which is non-circular (F28F1/08, F28F1/10 take precedence) · CPC title

• F28F1/325

  Fins with openings · CPC title

• F28F1/025

  with variable shape, e.g. with modified tube ends, with different geometrical features (F28F1/06, F28F1/08, F28F9/16, F28F9/18 take precedence) · CPC title