Heat exchanger

Patent metadata

Field	Value
Publication number	US-12092402-B2
Application number	US-202017438289-A
Country	US
Kind code	B2
Filing date	Jan 29, 2020
Priority date	Mar 20, 2019
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A heat exchanger includes a first-row heat exchange module through which a refrigerant is introduced from the outside, a second-row heat exchange module through which the refrigerant is discharged to the outside, a third-row heat exchange module through which the refrigerant is discharged to the outside, and a flow-splitting module that splits the refrigerant from the first-row heat exchange module into the second-row heat exchange module and the third-row heat exchange module, wherein the refrigerant reciprocates one time in a flow path, the first-row heat exchange module constitutes a forward path of the flow path, and both the second-row heat exchange module and the third-row heat exchange module constitute backward paths of the flow path.

First claim

The invention claimed is:

1. A heat exchanger comprising:
a first-row heat exchange module through which a refrigerant is introduced from outside;
a second-row heat exchange module through which the refrigerant is discharged to the outside;
a third-row heat exchange module through which the refrigerant is discharged to the outside, the first-row heat exchange module, the second-row heat exchange module, and the third-row heat exchange module are stacked in a ventilation direction; and
a flow-splitting module that splits the refrigerant introduced from the first-row heat exchange module into the second-row heat exchange module and the third-row heat exchange module, wherein
the refrigerant reciprocates one time in a flow path between an inlet, through which the refrigerant is introduced, and an outlet, through which the refrigerant is discharged, the first-row heat exchange module constitutes a forward path of the flow path, and both the second-row heat exchange module and the third-row heat exchange module constitute a backward path of the flow path,
the flow-splitting module includes a first flow-splitting chamber, a second flow-splitting chamber, and a third flow-splitting chamber that communicate with the first-row heat exchange module, the second-row heat exchange module, and the third-row heat exchange module, respectively,
a diameter of a first inflow port connecting the first flow-splitting chamber and the second flow-splitting chamber to each other is larger than a diameter of a second inflow port connecting the first flow-splitting chamber and the third flow-splitting chamber to each other, and
the flow-splitting module splits the refrigerant such that an amount of the refrigerant flowing into the second-row heat exchange module arranged on a windward side in the ventilation direction is larger than an amount of the refrigerant flowing into the third-row heat exchange module on a leeward side arranged in the ventilation direction of the second-row heat exchange module.

2. A heat exchanger comprising:
a first-row heat exchange module through which a refrigerant is introduced from the outside;
a second-row heat exchange module through which the refrigerant is discharged to the outside;
a third-row heat exchange module through which the refrigerant is discharged to the outside, the first-row heat exchange module, the second-row heat exchange module, and the third-row heat exchange module are stacked in a ventilation direction; and
a flow-splitting module that splits the refrigerant introduced from the first-row heat exchange module into the second-row heat exchange module and the third-row heat exchange module, wherein
the refrigerant reciprocates one time in a flow path between an inlet, through which the refrigerant is introduced, and an outlet, through which the refrigerant is discharged, the first-row heat exchange module constitutes a forward path of the flow path, and both the second-row heat exchange module and the third-row heat exchange module constitute a backward path of the flow path,
the flow-splitting module includes
a first flow-splitting chamber that communicates the first-row heat exchange module and the second-row heat exchange module, and
a second flow-splitting chamber that communicates the first-row heat exchange module and the third-row heat exchange module,

a diameter of a first inflow port connecting the first-row heat exchange module and the first flow-splitting chamber to each other is larger than a diameter of a second inflow port connecting the first-row heat exchange module and the second flow-splitting chamber to each other, and
the flow-splitting module splits the refrigerant such that an amount of the refrigerant flowing into the second-row heat exchange module arranged on a windward side in the ventilation direction is larger than an amount of the refrigerant flowing into the third-row heat exchange module on a leeward side arranged in the ventilation direction of the second-row heat exchange module.

Assignees

• Fujitsu General Ltd

Inventors

• Nakata Shohei
• Watanabe Masatoshi
• Maema Yoshinari
• Takaoka Ryo
• Shimano Daiki
• Oka Kotaro

Classifications

• F28F2250/102

  with change of flow direction · CPC title

• F25B41/42

  Arrangements for diverging or converging flows, e.g. branch lines or junctions · CPC title

• F28F9/0202

  Header boxes having their inner space divided by partitions · CPC title

• F28D1/0435

  Combination of units extending one behind the other (F28D1/0452 takes precedence) · CPC title

• F28D1/0417

  with particular circuits for the same heat exchange medium, e.g. with the heat exchange medium flowing through sections having different heat exchange capacities or for heating/cooling the heat exchange medium at different temperatures · CPC title