Heat exchanger and air conditioner

Patent metadata

Field	Value
Publication number	US-2021018190-A1
Application number	US-201917043125-A
Country	US
Kind code	A1
Filing date	Mar 22, 2019
Priority date	Mar 30, 2018
Publication date	Jan 21, 2021
Grant date	—

Abstract

A heat exchanger includes: a header that extends in a horizontal direction; and heat transfer tubes that extends in a direction crossing the horizontal direction, that are disposed side by side in a longitudinal direction of the header, and that are connected to the header. The header includes a first space that causes a refrigerant to flow in a first direction along the longitudinal direction of the header, a second space that causes the refrigerant to flow in a second direction along the longitudinal direction of the header and opposite to the first direction, a circulation member extends in the longitudinal direction of the header and separates the first space from the second space, a first communication port, a second communication port, and an inflow port.

First claim

1 .- 9 . (canceled)

10 . A heat exchanger comprising:
a header that extends in a horizontal direction; and heat transfer tubes that extend in a direction crossing the horizontal direction, that are disposed side by side in a longitudinal direction of the header, and that are connected to the header, wherein the header comprises:
a first space that causes a refrigerant to flow in a first direction along the longitudinal direction of the header;
a second space that causes the refrigerant to flow in a second direction along the longitudinal direction of the header and opposite to the first direction, wherein a portion of the second space is disposed side by side with the first space in the horizontal direction;
a circulation member that extends in the longitudinal direction of the header and separates the first space from the second space;
a first communication port through which the first space communicates with the second space in the header;
a second communication port through which the first space communicates with the second space in the header at a position in the second direction with respect to the first communication port; and
an inflow port that causes the refrigerant to flow into the header, and
at least one of the first space and the second space is directly or indirectly connected to the heat transfer tubes.

11 . The heat exchanger according to claim 10 , wherein the heat transfer tubes are connected to the header such that an end portion of each of the heat transfer tubes communicates with the first space and the second space.

12 . The heat exchanger according to claim 10 , wherein
the inflow port has an opening through which the refrigerant flows into the first space, and the heat transfer tubes are connected to the header such that an end portion of each of the heat transfer tubes communicates with the first space and not to communicate with the second space.

13 . The heat exchanger according to claim 10 , wherein
the inflow port has an opening through which the refrigerant flows into the first space, and the heat transfer tubes are connected to the header such that an end portion of each of the heat transfer tubes communicates with the second space and not to communicate with the first space.

14 . The heat exchanger according to claim 10 , wherein
the header further includes:
a third space between a connecting portion and at least one of the first space and the second space, the connecting portion connecting the heat transfer tubes to the header;
a third space member; and
a third communication port, and
when the third space is disposed between both the first space and the connecting portion as well as between the second space and the connecting portion,
the third space member separates the first space and the second space from the third space, and
at least one of the first space and the second space communicate with the third space via the third communication port.

15 . The heat exchanger according to claim 14 , wherein the heat transfer tubes are connected to the third space and disposed side by side in a direction in which the first space and the second space are disposed side by side.

16 . The heat exchanger according to claim 10 , wherein a tilt angle with respect to a vertical direction in which the heat transfer tubes extend is less than or equal to 45 degrees.

17 . The heat exchanger according to claim 10 , wherein each of the heat transfer tubes comprises either:
tubes disposed in a direction in which the first space and the second space are disposed side by side, or a circular tube.

18 . An air conditioner comprising:
a refrigerant circuit comprising the heat exchanger according to claim 10 .

19 . The heat exchanger according to claim 10 , wherein
the header further includes:
a third space between a connecting portion and at least one of the first space and the second space, the connecting portion connecting the heat transfer tubes to the header;
a third space member; and
a third communication port, and
when the third space is disposed between the first space and the connecting portion, the third space member separates the first space from the third space, and the first space communicates with the third space via the third communication port.

20 . The heat exchanger according to claim 10 , wherein
the header further includes:
a third space between a connecting portion and at least one of the first space and the second space, the connecting portion connecting the heat transfer tubes to the header;
a third space member; and
a third communication port, and
when the third space is disposed between the second space and the connecting portion, the third space member separates the second space from the third space, and the second space communicates with the third space via the third communication port.

Assignees

• Daikin Ind Ltd

Inventors

• Hirokawa Tomoki
• Inoue Satoshi
• Yoshioka Shun

Classifications

• F24F13/30

  Arrangement or mounting of heat-exchangers · CPC title

• F24F5/001

  Compression cycle type · CPC title

• F25B41/26

  of fluid flow reversing valves · CPC title

• F25B13/00

  Compression machines, plants or systems, with reversible cycle (defrosting cycles F25B47/02) · CPC title

• F25B41/42

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