Heat exchanger and air conditioning system having same

Patent metadata

Field	Value
Publication number	US-2024183619-A1
Application number	US-202218562990-A
Country	US
Kind code	A1
Filing date	May 13, 2022
Priority date	May 25, 2021
Publication date	Jun 6, 2024
Grant date	—

Abstract

A heat exchanger and an air conditioning system having same, wherein heat exchanger includes a first heat exchanger core and a second heat exchanger core, the first heat exchanger core including first heat exchange tubes and first fins, and the second heat exchanger core including second heat exchange tubes and second fins. The angle between the first heat exchanger core and the second heat exchanger core is α, the length of the first heat exchange tube is TL, the refrigerant circulation area of the first heat exchange tube is S, the width of the first fin is FW, the density of the first fin is FP, the height of the first fin is FH, the width of the first heat exchanger core is ML, the length of the second heat exchange tube is tl, the refrigerant circulation area of the second heat exchange tube is s, the width of the second fin is fw, the density of the second fin is fp, the height of the second fin is fh, the width of the second heat exchanger core is ml, and 0.016≤(TL×ML×FW×FP×FH×s×cos α)/(tl×ml×fw×fp×fh×S)≤64. In this way, the water drainage performance of the heat exchanger is improved, and the problem of water being blown from the heat exchanger is solved.

First claim

What is claimed is:

1 . A heat exchanger, comprising:
a first heat exchanger core, comprising: first heat exchange tubes, having first ends and second ends; and first fins arranged alternately with the first heat exchange tubes; and a second heat exchanger core, comprising: second heat exchange tubes, having first ends and second ends, the first ends of the second heat exchange tubes being connected to and in fluid communication with the first ends of the first heat exchange tubes; and second fins arranged alternately with the second heat exchange tubes, wherein: the first heat exchanger core is located at one side of the second heat exchanger core in a thickness direction of the second heat exchanger core, and an orthographic projection of the first heat exchanger core on a plane parallel to the second heat exchanger core at least partially overlaps the orthographic projection of the second heat exchanger core on a plane parallel to the second heat exchanger core, an angle between the first heat exchanger core and the second heat exchanger core is α, a length of the first heat exchange tube of the first heat exchanger core is TL, a refrigerant circulation area of the first heat exchange tube is S, a width of the first fin is FW, a density of the first fin is FP, a height of the first fin is FH, and a dimension of the first heat exchanger core in the direction of alternate arrangement of the first fins and the first heat exchange tubes is ML, a length of the second heat exchange tube of the second heat exchanger core is tl, a refrigerant circulation area of the second heat exchange tube is s, a width of the second fin is fw, a density of the second fin is fp, a height of the second fin is fh, and a dimension of the second heat exchanger core in the direction of alternate arrangement of the second fins and the second heat exchange tubes is ml, and
0.016≤( TL×ML×FW×FP×FH×s ×cos α)/( tl×ml×fw×fp×fh×S )≤64.

2 . The heat exchanger as claimed in claim 1 , wherein:
0°≤α≤45°.

3 . The heat exchanger as claimed in claim 1 , wherein:
0.005≤( TL×ML×FW×FP×FH )/( tl×ml×fw×fp×fh )≤18.

4 . The heat exchanger as claimed in claim 1 , wherein:
0.09≤( TL×ML )/( tl×ml )≤0.95.

5 . The heat exchanger as claimed in claim 1 , wherein:
0.21≤ TL ×cos α/ tl≤ 0.95.

6 . The heat exchanger as claimed in claim 1 , wherein:
0.05≤( FW×FP×FH )/( fw×fp×fh )≤18.

7 . The heat exchanger as claimed in claim 1 , wherein:
0.2≤( FW×FP )/( fw×fp )≤9.

8 . The heat exchanger as claimed in claim 1 , wherein:
0.28≤( TL×s )/( tl×S )≤3.5.

9 . The heat exchanger as claimed in claim 1 , wherein:
the first heat exchange tube and second heat exchange tube are formed by bending a heat exchange tube, or the first heat exchanger core and second heat exchanger core are formed by bending a heat exchanger core.

10 . The heat exchanger as claimed in claim 1 , further comprising:
a connecting part, wherein the first ends of the first heat exchange tubes of the first heat exchanger core are connected to and in fluid communication with the first ends of the second heat exchange tubes of the second heat exchanger core by means of the connecting part.

11 . The heat exchanger as claimed in claim 10 , wherein:
the connecting part comprises connecting tubes, and the first ends of the first heat exchange tubes of the first heat exchanger core are connected to and in fluid communication with the first ends of the second heat exchange tubes of the second heat exchanger core by means of the connecting tubes.

12 . The heat exchanger as claimed in claim 10 , wherein:
the connecting part comprises two connecting manifolds in fluid communication with each other; one of the two connecting manifolds is connected to and in fluid communication with the first ends of the first heat exchange tubes of the first heat exchanger core, and the other of the two connecting manifolds is connected to and in fluid communication with the first ends of the second heat exchange tubes of the second heat exchanger core.

13 . The heat exchanger as claimed in claim 1 , further comprising:
a first manifold, connected to and in fluid communication with the second ends of the first heat exchange tubes of the first heat exchanger core, and a second manifold, connected to and in fluid communication with the second ends of the second heat exchange tubes of the second heat exchanger core.

14 . The heat exchanger as claimed in claim 13 , further comprising:
an outlet side manifold, the outlet side manifold being in fluid communication, via a connecting tube, with one of the first and second manifolds which is at a refrigerant outlet side of the heat exchanger.

15 . The heat exchanger as claimed in claim 13 , further comprising:
a refrigerant distributing means, wherein the refrigerant distributing means is disposed in one of the first and second manifolds which is at a refrigerant inlet side of the heat exchanger; or the refrigerant distributing means is disposed outside one of the first and second manifolds which is at the refrigerant inlet side of the heat exchanger, and in fluid communication with said one manifold via multiple connecting tubes.

16 . The heat exchanger as claimed in claim 13 , wherein:
the cross-sectional area of one of the first and second manifolds which is at a refrigerant inlet side of the heat exchanger is smaller than the cross-sectional area of the other of the first and second manifolds which is at a refrigerant outlet side of the heat exchanger.

17 . The heat exchanger as claimed in claim 13 , wherein:
the first manifold is used to flow refrigerant into the heat exchanger, and the second manifold is used to flow refrigerant out of the heat exchanger.

18 . An air conditioning system, comprising:
the heat exchanger as claimed in claim 1 .

19 . The air conditioning system as claimed in claim 18 , wherein:
the heat exchanger further comprises: a first manifold, connected to and in fluid communication with the second ends of the first heat exchange tubes of the first heat exchanger core, and a second manifold, connected to and in fluid communication with the second ends of the second heat exchange tubes of the second heat exchanger core; and the first manifold and the second manifold are arranged horizontally during use, and/or one of the first manifold and the second manifold is below the other during use.

20 . The air conditioning system as claimed in claim 18 , wherein:
during use, the second heat exchanger core is located upstream of the first heat exchanger core in a direction of air flow through the heat exchanger.

Assignees

• Danfoss As

Inventors

• Wang Leilei
• Li Yanxing
• Yang Jing
• Wu Weijun
• Li Yan
• Yuan Jing

Classifications

• F24F13/30

  Arrangement or mounting of heat-exchangers · CPC title

• F28D7/163 Primary

  with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing (F28D7/1615 takes precedence) · CPC title

• F28F9/02

  Header boxes; End plates · CPC title

• F28D1/047 Primary

  the conduits being bent, e.g. in a serpentine or zig-zag · CPC title

• F25B39/028 Primary

  having distributing means · CPC title