Heat exchanger and air conditioner

Patent metadata

Field	Value
Publication number	US-11788799-B2
Application number	US-202117314482-A
Country	US
Kind code	B2
Filing date	May 7, 2021
Priority date	Nov 7, 2018
Publication date	Oct 17, 2023
Grant date	Oct 17, 2023

Abstract

A heat exchanger includes: a flat tube having a width greater than a thickness of the flat tube; and fins fixed to the flat tube and that each include a plate-shaped fin body. The plate-shaped fin body of each of the fins faces the plate-shaped fin body of an adjacent one of the fins. Each of the fins has a tube receiving opening into which the flat tube is inserted. An edge of the tube receiving opening includes a first longitudinal side edge portion extending in a width direction of the flat tube. The tube receiving opening is in a notch shape that has: an open end on a first side of the first longitudinal side edge portion; and a closed end on a second side of the first longitudinal side edge portion.

First claim

What is claimed is:

1. A heat exchanger, comprising:
a flat tube having a width greater than a thickness of the flat tube; and
fins fixed to the flat tube and that each comprise a plate-shaped fin body, wherein
the plate-shaped fin body of each of the fins faces the plate-shaped fin body of an adjacent one of the fins,
each of the fins has a tube receiving opening into which the flat tube is inserted,
an edge of the tube receiving opening comprises a first longitudinal side edge portion extending in a width direction of the flat tube,
the tube receiving opening is in a notch shape that has:
an open end on a first side of the first longitudinal side edge portion; and
a closed end on a second side of the first longitudinal side edge portion,

each of the fins further comprises:
a first open end-side protruding tab that:
protrudes from the first longitudinal side edge portion toward a side of the plate-shaped fin body in a first direction intersecting with the plate-shaped fin body; and
comprises a tip end portion that contacts with the plate-shaped fin body of the adjacent one of the fins; and

a first longitudinal side joint portion protruding from the first longitudinal side edge portion toward the side of the plate-shaped fin body, wherein the first longitudinal side joint portion protrudes less in a direction orthogonal to the plate-shaped fin body than the first open end-side protruding tab protrudes in the direction,

the first longitudinal side joint portion contacts the flat tube inserted into the tube receiving opening, and
the first open end-side protruding tab is shorter than the first longitudinal side joint portion in a second direction along the first longitudinal side edge portion.

2. The heat exchanger according to claim 1 , wherein the first open end-side protruding tab is disposed closer to the open end of the tube receiving opening than the first longitudinal side joint portion is.

3. The heat exchanger according to claim 2 , wherein
the edge of the tube receiving opening further comprises a second longitudinal side edge portion facing the first longitudinal side edge portion across the flat tube inserted into the tube receiving opening, and
each of the fins further comprises:
a second open end-side protruding tab that:
protrudes from the second longitudinal side edge portion toward the side of the plate-shaped fin body; and
comprises a tip end portion that contacts with the plate-shaped fin body of the adjacent one of the fins; and

a second longitudinal side joint portion protruding from the second longitudinal side edge portion toward the side of the plate-shaped fin body, wherein the second longitudinal side joint portion protrudes in the direction less than the second open end-side protruding tab protrudes in the direction.

4. The heat exchanger according to claim 3 , wherein
the first open end-side protruding tab faces the second open end-side protruding tab, and
the first longitudinal side joint portion faces the second longitudinal side joint portion.

5. The heat exchanger according to claim 1 , wherein
the edge of the tube receiving opening further comprises a short side edge portion facing the closed end of the tube receiving opening, and
each of the fins further comprises a closed end-side protruding tab that:
protrudes from the short side edge portion toward the side of the plate-shaped fin body; and
comprises a tip end portion that contacts with the plate-shaped fin body of the adjacent one of the fins.

6. The heat exchanger according to claim 5 , wherein
a width direction of the fins is along the width direction of the flat tube,
a length of the tube receiving opening in the width direction of the fins is greater than half a width of the fins, and
the first open end-side protruding tab is closer to the open end of the tube receiving opening than a center of the fins in the width direction of the fins is.

7. The heat exchanger according to claim 2 , wherein the first open end-side protruding tab comprises an edge adjacent to the open end of the tube receiving opening and that is tilted toward the closed end of the tube receiving opening as the edge extends from a base to a tip of the first open end-side protruding tab.

8. An air conditioner, comprising:
a refrigerant circuit that comprises the heat exchanger according to claim 1 , wherein
the air conditioner circulates a refrigerant in the refrigerant circuit and performs a refrigeration cycle.

Assignees

• Daikin Ind Ltd

Inventors

• Matsumoto Yoshiyuki
• Yoshioka Shun

Classifications

• F28F1/32 Primary

  the means having portions engaging further tubular elements · CPC title

• F28F1/02

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

• F28D1/05366 Primary

  Assemblies of conduits connected to common headers, e.g. core type radiators · CPC title

• F28D1/0471

  the conduits having a non-circular cross-section (F28D1/0473, F28D1/0476, F28D1/0478 take precedence) · CPC title

• F28F1/325

  Fins with openings · CPC title