Heat exchanger and heat pump having the same

Patent metadata

Field	Value
Publication number	US-10126030-B2
Application number	US-201515326989-A
Country	US
Kind code	B2
Filing date	Jul 16, 2015
Priority date	Jul 17, 2014
Publication date	Nov 13, 2018
Grant date	Nov 13, 2018

Abstract

A heat exchanger having a plurality of first tubes and second tubes through which a refrigerant passes and which are lengthily formed up and down, each of the first and second tubes being spaced from each other and air flowing between the tubes; and a fin in contact with the first and second tubes, wherein the second tubes are spaced from each other and located at a slipstream of the first tubes in an air-flow direction, a first louver group having a plurality of louvers located between the first tubes and spaced from each other in the air-flow direction and a second louver group having a plurality of louvers located between the second tubes and spaced from each other in the air-flow direction are formed in the fin, wherein some of the louvers of the second louver group are longer toward the slipstream of the air-flow direction.

First claim

The invention claimed is:

1. A heat exchanger, comprising:
a plurality of first tubes and a plurality of second tubes through which a refrigerant passes therein and which are lengthily formed up and down, each of the first tubes and the second tubes being spaced apart from each other and air flowing between the tubes; and
a fin coming into contact with the first tube and the second tube,
wherein the plurality of second tubes is spaced apart from each other and located at a slipstream of the plurality of first tubes in a direction in which air flows,
a first louver group comprising a plurality of louvers located between the plurality of first tubes and spaced apart from each other in the direction in which air flows and a second louver group comprising a plurality of louvers located between the plurality of second tubes and spaced apart from each other in the direction in which air flows are formed in the fin, and
an interval between adjacent louvers of the plurality of louvers of the first louver group is gradually narrowed toward a slipstream of the direction in which air flows, wherein
the plurality of louvers of the first louver group guides air in an upward slope direction, and
the plurality of louvers of the second louver group guides air in a downward slope direction,
wherein some of the plurality of louvers of the first louver group have a length which is shorter toward the slipstream of the direction in which air flows,
wherein an interval between adjacent louvers of the plurality of louvers of the second louver group is gradually widened toward the slipstream of the direction in which air flows,
wherein some of the plurality of louvers of the second louver group have a length which is longer toward the slipstream of the direction in which air flows.

2. The heat exchanger of claim 1 , wherein the interval between the plurality of louvers of the first louver group is gradually reduced at a ratio of 10% to 20% toward the slipstream of the direction in which air flows.

3. A heat pump, comprising:
a compressor which compresses a refrigerant;
an outdoor heat exchanger which thermally exchanges the refrigerant with outside air;
an indoor heat exchanger which thermally exchanges the refrigerant with indoor air;
an expansion device which is disposed between the heat exchanger and the indoor heat exchanger; and
a cooling and heating switchover valve which runs the refrigerant compressed by the compressor toward the heat exchanger or toward the indoor heat exchanger,
wherein the outdoor heat exchanger comprises:
a plurality of first tubes and a plurality of second tubes through which a refrigerant passes therein and which are lengthily formed up and down, each of the first tubes and the second tubes being spaced apart from each other and outside air flowing between the tubes; and
a fin coming into contact with the first tube and the second tube,
wherein the plurality of second tubes is spaced apart from each other and located at a slipstream of the plurality of first tubes in a direction in which outside air flows,
a first louver group comprising a plurality of louvers located between the plurality of first tubes and spaced apart from each other in the direction in which outside air flows and a second louver group comprising a plurality of louvers located between the plurality of second tubes and spaced apart from each other in the direction in which outside air flows are formed in the fin, and
an interval between adjacent louvers of the plurality of louvers of the first louver group is gradually narrowed toward a slipstream of the direction in which outside air flows, wherein
the plurality of louvers of the first louver group guides air in an upward slope direction, and
the plurality of louvers of the second louver group guides air in a downward slope direction,
wherein some of the plurality of louvers of the first louver group have a length which is shorter toward the slipstream of the direction in which air flows,
wherein an interval between adjacent louvers of the plurality of louvers of the second louver group is gradually widened toward the slipstream of the direction in which air flows,
wherein some of the plurality of louvers of the second louver group have a length which is longer toward the slipstream of the direction in which air flows.

4. The heat pump of claim 3 , wherein the interval between the plurality of louvers of the first louver group is gradually reduced at a ratio of 10% to 20% toward the slipstream of the direction in which outside air flows.

Assignees

• Lg Electronics Inc
• Iucf Hyu

Inventors

• Kim Seh Yeon
• Park Jin Sung
• Lee Kwan Soo

Classifications

• F28F1/325

  Fins with openings · CPC title

• F28F2215/08

  with openings, e.g. louvers · CPC title

• H05K999/99

  Electricity · mapped topic

• F25B47/006 Primary

  for preventing frost · CPC title

• F25B30/00

  Heat pumps (F25B1/00-F25B25/00, F25B29/00 take precedence) · CPC title