HEAT EXCHANGER AND AIR CONDITIONER HAVING THE SAME

• US 20200132395A1
• Filed: 10/18/2019
• Published: 04/30/2020
• Est. Priority Date: 10/18/2018
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Hyun Young, Sato, Seiji, Lee, Sang Mu
• Granted Patent: US 11,293,701 B2
• Time in Patent Office: Days
• CPC Class Codes: B21D 53/085 with fins places on zig-zag tubes or parallel tubes
• CPC Class Codes: F28D 1/04 with tubular conduits F28D1/0246 takes precedence
• CPC Class Codes: F28D 2021/0068 for refrigerant cycles
• CPC Class Codes: F28F 1/128 Fins with openings, e.g. louvered fins
• CPC Class Codes: F28F 1/32 the means having portions engaging further tubular elements
• CPC Class Codes: F28F 1/325 Fins with openings

Abstract

Disclosed herein is a heat exchanger including a corrugated fin and an air conditioner including the same. The corrugated fin includes a through hole through which a heat transfer tube passes, a corrugated portion formed in a zigzag shape in the first direction corresponding to an air flow direction and a flat portion provided in the plane adjacent to the through hole, and the flat portion has a first length in the first direction corresponding to an air flow direction, and a second length shorter than the first length in a second direction perpendicular to the air flow direction.

Claims

1. A heat exchanger comprising:

a heat transfer tube configured to guide a refrigerant; and

a plurality of corrugated fins provided with a through hole through which the heat transfer tube is installed to pass, the plurality of corrugated fins spaced apart from each other to allow air to pass in a first direction,

wherein each of the plurality of the corrugated fins comprises;

a corrugated portion formed in a zigzag shape in the first direction corresponding to an air flow direction; and

a flat portion provided as a flat surface in a vicinity of the through hole,

wherein the flat portion has a first length in the first direction corresponding to the air flow direction, and a second length shorter than the first length, in a second direction perpendicular to the air flow direction.

2. The heat exchanger of claim 1, wherein each of the plurality of the corrugated fins further comprises a collar in surface contact with the heat transfer tube and a sheet portion provided in the vicinity of the through hole so as to form the collar,

wherein the sheet portion forms the flat portion.

3. The heat exchanger of claim 1, wherein the flat portion is formed by a first arc passing through a first point corresponding to one end of the first direction and a tangent line thereof, a second arc passing through a second point corresponding to the other end of the first direction and a tangent line thereof, a third arc passing through a third point corresponding to one end of the second direction and a tangent line thereof, and a fourth arc passing through a fourth point corresponding to the other end of the second direction and a tangent line thereof.

4. The heat exchanger of claim 3, wherein a center of curvature of the first arc and a center of curvature of the second arc are symmetrically positioned in the first direction with respect to a center of the heat transfer tube.

5. The heat exchanger of claim 3, wherein a center of curvature of the third arc and a center of curvature of the fourth arc are symmetrically positioned in the second direction with respect to a center of the heat transfer tube.

6. The heat exchanger of claim 3, wherein:

the first arc and the second arc have a first radius of curvature, and

the third arc and the fourth arc have a second radius of curvature greater than the first radius of curvature.

7. The heat exchanger of claim 1, wherein the flat portion is formed in an oval shape in which two focal points are symmetrically positioned in the first direction with respect to a center of the heat transfer tube.

8. The heat exchanger of claim 1, wherein a ratio of the first length of the flat portion to the second length of the flat portion is in a range from about 0.6 to about 0.85.

9. The heat exchanger of claim 1, wherein each of the plurality of the corrugated fins further comprises:

a plurality of inclined portions connected in a zigzag shape and inclined with respect to the first direction; and

louvers formed by cutting and bending a portion of the plurality of inclined portions.

10. The heat exchanger of claim 9, wherein:

each of the plurality of the corrugated fins further comprises four inclined portions connected in a zigzag shape, and

the louvers are formed on any one of two inclined portions located on the outside and two inclined portions located on the inside among the four inclined portions.

11. The heat exchanger of claim 1, further comprising:

a connecting portion configured to connect the corrugated portion to the flat portion.

12. The heat exchanger of claim 11, wherein:

the corrugated portion further comprises two ridges and one valley formed on four inclined portions,

a center of the heat transfer tube is placed at a position corresponding to the valley, and

the connecting portion is arranged in a region except the valley.

13. An air conditioner comprising:

an indoor heat exchanger configured to exchange heat with indoor air; and

an outdoor heat exchanger configured to exchange heat with outdoor air,

wherein at least one of the outdoor heat exchanger or the indoor heat exchanger comprise;

a heat transfer tube configured to guide a refrigerant; and

a plurality of corrugated fins provided with a through hole through which the heat transfer tube is installed to pass, the plurality of corrugated fins spaced apart from each other to allow air to pass in a first direction,

wherein each of the plurality of the corrugated fins comprises;

a corrugated portion formed in a zigzag shape in the first direction corresponding to an air flow direction; and

a flat portion provided as a flat surface in a vicinity of the through hole,

wherein the flat portion has a first length in the first direction corresponding to the air flow direction, and a second length shorter than the first length, in a second direction perpendicular to the air flow direction.

14. The air conditioner of claim 13, wherein the flat portion is formed by a first arc passing through a first point corresponding to one end of the first direction and a tangent line thereof, a second arc passing through a second point corresponding to the other end of the first direction and a tangent line thereof, a third arc passing through a third point corresponding to one end of the second direction and a tangent line thereof, and a fourth arc passing through a fourth point corresponding to the other end of the second direction and a tangent line thereof.

15. The air conditioner of claim 14, wherein:

a center of curvature of the first arc and a center of curvature of the second arc are symmetrically positioned in the first direction with respect to a center of the heat transfer tube, and

a center of curvature of the third arc and a center of curvature of the fourth arc are symmetrically positioned in the second direction with respect to the center of the heat transfer tube.

16. The air conditioner of claim. 14, wherein:

the first arc and the second arc have a first radius of curvature, and

the third arc and fourth arc have a second radius of curvature greater than the first radius of curvature.

17. The air conditioner of claim 13, wherein the flat portion is formed in an oval shape in which two focal points are symmetrically positioned in the first direction with respect to a center of the heat transfer tube.

18. The air conditioner of claim 13, wherein each of the plurality of the corrugated fins further comprises:

a plurality of inclined portions connected in a zigzag shape and inclined with respect to the first direction; and

louvers formed by cutting and bending a portion of the plurality of inclined portions.

19. The air conditioner of claim 13, further comprising:

a connecting portion configured to connect the corrugated portion to the flat portion.

20. The air conditioner of claim 19, wherein:

the corrugated portion further comprises two ridges and one valley formed on four inclined portions,

a center of the heat transfer tube is placed at a position corresponding to the valley, and

the connecting portion is arranged in a region except the valley.