Heat exchanger

Patent metadata

Field	Value
Publication number	US-11041676-B2
Application number	US-201615749471-A
Country	US
Kind code	B2
Filing date	Jul 29, 2016
Priority date	Jul 31, 2015
Publication date	Jun 22, 2021
Grant date	Jun 22, 2021

Abstract

A heat exchanger may include flat tubes formed of a microchannel type, and first and second fins positioned at a top and bottom of the flat tubes so as to conduct the heat of the flat tubes. The first and second fins may be respectively provided with first and second condensate water discharge fins at a top and bottom. The second condensate water discharge fins of the first fins and the first condensate water discharge fins of the second fins may come into contact, and the second condensate water discharge fins of the first fins and the first condensate water discharge fins of the second fins may be disposed in a line with respect to a vertical direction, thereby having an advantage of quickly transferring condensate water formed at the top to the bottom.

First claim

The invention claimed is:

1. A micro channel type heat exchanger comprising at least one flat tube that extends horizontally; a first fin disposed over the flat tube to conduct heat of the flat tube; and a second fin disposed under the flat tube to conduct heat of the flat tube, wherein:
the first fin comprises:
a plurality of first fin parts disposed on the flat tube, disposed to cross the flat tube and having a first end and a second end;
a plurality of second fin parts disposed on the flat tube, disposed to cross the flat tube between the plurality of the first fin parts, and having a first end and a second end;
a plurality of first planar bent parts bent from the first end of each of the plurality of first fin parts and each of the plurality of second fin parts to connect upper parts of the first ends of the plurality of first fin parts and the first ends of the plurality of second fin parts;
a plurality of second bent parts bent from the second end of each of the plurality of first fin parts and the second end of each of the plurality of second fin parts to connect lower parts of the second-side end of the plurality of first fin parts and the second ends of the plurality of second fin parts;
flow spaces formed between the plurality of first fin parts and the plurality of second fin parts;
a plurality of first condensate water discharge fins formed at an outer edge of each of the plurality of first bent parts by cutting a portion of each of the plurality of first bend parts at a boundary between the plurality of second fin parts and the plurality of first bent parts and bending the portion upward away from the boundary to form a condensate water discharge hole; and
a plurality of second condensate water discharge fins formed at an outer edge of each of the plurality of second bent parts by cutting a portion of each of the plurality of second bend parts at a boundary between the plurality of second fin parts and the plurality of second bent parts and bending the portion downward away from the boundary to form a condensate water discharge hole, and the second fin comprises:
a plurality of the first fin parts disposed under the flat tube, disposed to cross the flat tube and having a first end and a second end;
a plurality of second fin parts disposed under the flat tube, disposed to cross the flat tube between the plurality of the first fin parts, and having a first end and a second end;
a plurality of first planar bent parts bent from the first end of each of the plurality of first fin parts and the first end of each of the plurality of second fin parts to connect the first ends of the plurality of first fin parts and the first ends of the plurality of second fin parts;
a plurality of second planar bent parts bent from the second end of each of the plurality of first fin parts and the second end of each of the plurality of second fin parts to connect the second ends of the plurality of first fin parts and the second ends of the plurality of second fin parts;
flow spaces formed between the plurality of first fin parts and the plurality of second fin parts;
a plurality of first condensate water discharge fins formed at an outer edge of the plurality of first bent parts by cutting a portion of each of the plurality of first bend parts at a boundary between the plurality of second fin parts and the plurality of first bent parts and bending the portion upward away from the boundary to form a condensate water discharge hole; and
a plurality of second condensate water discharge fins formed at an outer edge of each of the fin second bent parts by cutting a portion of each of the fin first bend parts at a boundary between the plurality of second fin parts and the plurality of second bent parts and bending the portion downward away from the boundary to form a condensate water discharge hole, wherein a bottom of the second condensate water discharge fins of the first fin are in contact with a top of the first condensate water discharge fins of the second fin, and wherein the flat tube is disposed within a height of the second condensate water discharge fins of the first fin and the first condensate water discharge fins of the second fin.

2. The heat exchanger of claim 1 , wherein the first condensate water discharge fins and the second condensate water discharge fins are disposed at an outside of the flat tube.

3. The heat exchanger of claim 1 , wherein the first fin comprises a unit wave comprising the plurality of first fin parts, the plurality of first bent parts, the plurality of second fin parts and the second bent parts, wherein a plurality of the unit waves is formed to extend in a lengthwise direction of the flat tube, and wherein the plurality of unit waves is formed in a wave form.

4. The heat exchanger of claim 1 , wherein the first fin comprises a unit wave comprising the plurality of first fin parts, the plurality of first bent parts, the plurality of second fins parts and the plurality of second bent parts, wherein a plurality of the unit waves is formed to extend in a lengthwise direction of the flat tube, and wherein the plurality of unit waves is formed in a trapezoid form.

5. The heat exchanger of claim 4 , wherein the plurality of first fin parts and the plurality of second fin parts are slanted with respect to a vertical direction, and wherein a slope direction of the plurality of first fin parts and a slope direction of the plurality of second fin parts extend in opposite directions.

6. The heat exchanger of claim 5 , wherein the slope direction of the plurality of first fin parts and the slope direction of the plurality of second fin parts stand face to face with respect to the vertical direction.

7. The heat exchanger of claim 1 , wherein the first fin comprises a unit wave comprising the plurality of first fin parts, the plurality of first bent parts, the plurality of second fin parts and the plurality of second bent parts, wherein a plurality of the unit waves is formed to extend in a lengthwise direction of the flat tube, and wherein the plurality of unit waves is formed in a parallelogram form.

Assignees

• Lg Electronics Inc

Inventors

• Lee Eungyul
• Jung Seungmo
• Kim Juhyok
• Park Taegyun

Classifications

• F28F1/128

  Fins with openings, e.g. louvered fins · CPC title

• F28F1/022

  with multiple channels · CPC title

• F28F17/005

  Means for draining condensates from heat exchangers, e.g. from evaporators (F28B9/08 takes precedence) · CPC title

• F28D1/04 Primary

  with tubular conduits {(F28D1/0246 takes precedence)} · CPC title

• F28F9/013

  for tubes or tube-assemblies · CPC title