Heat exchanger, electric control box and air conditioning system

Patent metadata

Field	Value
Publication number	US-12422152-B2
Application number	US-202117922376-A
Country	US
Kind code	B2
Filing date	Aug 23, 2021
Priority date	Aug 26, 2020
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

A heat exchanger includes: a heat exchanger body, the heat exchanger body being provided with first micro-channels and second micro-channels; and a header assembly, including a first header and a second header. The first header is provided with a first header channel which is used for providing a first refrigerant flow to the first micro-channels and/or collecting a first refrigerant flow flowing through the first micro-channels, and the second header is provided with a second header channel which is used for providing a second refrigerant flow to the second micro-channels and/or collecting a second refrigerant flow flowing through the second micro-channels, and heat is exchanged between the first refrigerant flow flowing through the first micro-channels and the second refrigerant flow flowing through the second micro-channels.

First claim

What is claimed is:

1. A heat exchanger, comprising:
a heat exchanging body, defining a plurality of first micro-channels and a plurality of second micro-channels; and
a fluid-collecting tube assembly, comprising a first fluid-collecting tube and a second fluid-collecting tube, wherein the first fluid-collecting tube defines a first fluid-collecting channel, the first fluid-collecting channel is configured to provide a first cooling medium to the plurality of first micro-channels and/or to collect the first cooling medium that flows through the plurality of first micro-channels; the second fluid-collecting tube defines a second fluid-collecting channel, the second fluid-collecting channel is configured to provide a second cooling medium to the plurality of second micro-channels and/or to collect the second cooling medium that flows through the plurality of second micro-channels, and heat is exchanged between the first cooling medium flowing through the plurality of first micro-channels and the second cooling medium flowing through the plurality of second micro-channels;
wherein the heat exchanging body comprises a plate body, the plurality of first micro-channels and the plurality of second micro-channels are arranged alternately in a same row in the plate body.

2. The heat exchanger according to claim 1 , wherein the second cooling medium absorbs heat from the first cooling medium to sub-cool the first cooling medium while the second cooling medium is flowing along the plurality of second micro-channels; or
the first cooling medium absorbs heat from the second cooling medium to sub-cool the second cooling medium while the first cooling medium is flowing along the plurality of first micro-channels.

3. The heat exchanger according to claim 1 , wherein the first fluid-collecting tube and the second fluid-collecting tube are spaced apart from each other along an extension direction of the heat exchanging body; and
the second micro-channels extend through the first fluid-collecting tube and are inserted into the second fluid-collecting tube, or the first micro-channels extend through the second fluid-collecting tube and are inserted into the first fluid-collecting tube.

4. The heat exchanger according to claim 1 , wherein the fluid-collecting tube assembly comprises a master fluid-collecting tube and a flow divider arranged inside the master fluid-collecting tube; and
the master fluid-collecting tube is configured as the first fluid-collecting tube and the second fluid-collecting tube separated from the first fluid-collecting tube by the flow divider, or configured as two first fluid-collecting tubes and two second fluid-collecting tubes separated from the two first fluid-collecting tubes by the flow divider.

5. The heat exchanger according to claim 4 , wherein the master fluid-collecting tube is configured as the first fluid-collecting tube and the second fluid-collecting tube separated from the first fluid-collecting tube by the flow divider;
the first micro-channels extend through a side wall of the master fluid-collecting tube and are inserted into the first fluid-collecting tube, the second micro-channels extend through the side wall of the master fluid-collecting tube and the flow divider, and are inserted into the second fluid-collecting tube; or
the second micro-channels extend through the side wall of the master fluid-collecting tube and are inserted into the second fluid-collecting tube, the first micro-channels extend through the side wall of the master fluid-collecting tube and the flow divider, and are inserted into the first fluid-collecting tube.

6. The heat exchanger according to claim 4 , wherein the master fluid-collecting tube is configured as the two first fluid-collecting tubes and two second fluid-collecting tubes separated from the two first fluid-collecting tubes by the flow divider; and an end of each of the plurality of first micro-channels extends through a side wall of the master fluid-collecting tube and is inserted into one of the two first fluid-collecting tubes, the other end of each of the plurality of first micro-channels extends through the side wall of master fluid-collecting tube and the divider, and is inserted into the other one of the two first fluid-collecting tubes; or
the master fluid-collecting is configured as the two first fluid-collecting tubes and two second fluid-collecting tubes separated from the two first fluid-collecting tubes by the flow divider; and an end of each of the plurality of second micro-channels extends through the side wall of the master fluid-collecting tube and is inserted into one of the two second fluid-collecting tubes, the other end of each of the plurality of second micro-channels extends through the side wall of master fluid-collecting tube and the divider, and is inserted into the other one of the two second fluid-collecting tubes.

7. The heat exchanger according to claim 1 , wherein the first fluid-collecting tube sleeves an outside of the second fluid-collecting tube; the plurality of first micro-channels extend through a side wall of the first fluid-collecting tube and are inserted into the first fluid-collecting tube; and the plurality of second micro-channels extend through the side wall of the first fluid-collecting tube and a side wall of the second fluid-collecting tube and are inserted into the second fluid-collecting tube; or
the second fluid-collecting tube sleeves an outside of the first fluid-collecting tube; the plurality of second micro-channels extend through the side wall of the second fluid-collecting tube and are inserted into the second fluid-collecting tube; and the plurality of first micro-channels extend through the side wall of the second fluid-collecting tube and the side wall of the first fluid-collecting tube and are inserted into the first fluid-collecting tube.

8. The heat exchanger according to claim 1 , wherein a flowing direction of the first cooling medium is the same as, opposite to or perpendicular to a flowing direction of the second cooling medium.

9. The heat exchanger according to claim 1 , wherein a number of first fluid-collecting tubes is two, one of the two first fluid-collecting tubes is configured to supply the first cooling medium to the plurality of first micro-channels, and the other of the two first fluid-collecting tubes is configured to collect the first cooling medium that flows through the plurality of first micro-channels; and
a number of second fluid-collecting tubes is two, one of the two second fluid-collecting tubes is configured to supply the second cooling medium to the plurality of second micro-channels, and the other of the two second fluid-collecting tubes is configured to collect the second cooling medium that flows through the plurality of second micro-channels.

10. The heat exchanger according to claim 1 , wherein an extension direction of the plurality of first micro-channels is parallel to an extension direction of the plurality of second micro-channels;
the heat exchanging body comprises at least two sets of first micro-channels and second micro-channels;
one set of the at least two sets of first micro-channels and second micro-channels is spaced apart from another set of the at least two sets of first micro-channels and second micro-channels, in a direction perpendicular to the extension direction;
ends of the first micro-channels of the at least two sets of first micro-channels and second micro-channels are connected to a same first fluid-collecting tube, and ends of the second micro-channels of the at least two sets of first micro-channels and second micro-channels are connected to a same second fluid-collecting tube.

11. The heat exchanger according to

Assignees

• Gd Midea Heating & Ventilating Equipment Co Ltd
• Midea Group Co Ltd

Inventors

• Li Zhaohui
• Li Feng
• Li Hongwei
• Wang Guochun
• Luo Yuzhao

Classifications

• H05K7/20245

  by natural convection; Thermosiphons · CPC title

• H05K7/202

  Air circulating in closed loop within enclosure wherein heat is removed through heat-exchangers · CPC title

• F28F2260/02

  having microchannels · CPC title

• F28D2021/0068

  for refrigerant cycles · CPC title

• F28D2021/0029

  Heat sinks · CPC title