Evaporator

Patent metadata

Field	Value
Publication number	US-9919584-B2
Application number	US-201514916237-A
Country	US
Kind code	B2
Filing date	Aug 27, 2015
Priority date	Aug 29, 2014
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

Abstract

The present invention relates to an evaporator ( 1000 ) and, more specifically, to an evaporator ( 1000 ), in which refrigerant is uniformly distributed to each area through 8-pass flow from a first area (A 1 ) to an eighth area (A 8 ) so as to reduce temperature variation and maximize the heat exchange efficiency with respect to outdoor air, and air is discharged to the left and right sides in a vehicle room with uniform temperature distribution so as to maintain the comfort of passengers.

First claim

The invention claimed is:

1. An evaporator comprising:
a first header tank including a first partition wall, the first partition wall dividing the first header tank into a first line and a second line;
a second header tank parallel to and spaced apart from the first header tank at a predetermined distance, the second header tank including a second partition wall, the second partition wall dividing the second header tank into a first line and a second line;
a plurality of baffles disposed within each of the first header tank and the second header tank, the plurality of baffles of the first header tank controlling a refrigerant flowing through the first header tank, the plurality of baffles of the second header tank controlling the refrigerant flowing through the second header tank;
a core part including a plurality of tubes and a plurality of fins, the plurality of tubes fixed to and extending between the first header tank and the second header tank, the plurality of fins interposed between the plurality of tubes, wherein the plurality of tubes cooperate with the plurality of baffles of each of the first header tank and the second header tank to divide the plurality of tubes into a first area, a second area, a third area, a fourth area, a fifth area, a sixth area, a seventh area, and an eighth area, wherein the first area, the second area, the third area, and the fourth area extend between the first line of the first header tank and the first line of the second header tank and the fifth area, the sixth area, the seventh area, and the eighth area extend between the second line of the first header tank and the second line of the second header tank; and
an inlet pipe in fluid communication with the first line of the first header tank and an outlet pipe in fluid communication with the second line of the first header tank, the inlet pipe parallel with the outlet pipe, wherein the first header tank is formed with a hole for fluid communication from the first line to the second line.

2. The evaporator of claim 1 , wherein a first portion of the inlet pipe extends from the first header tank in a height direction of the evaporator and a second portion of the inlet pipe extending from the first portion of the inlet pipe in a width direction of the evaporator, the outlet pipe extending from the first header tank in the width direction of the evaporator, the inlet pipe and the outlet pipe forming a manifold having a C-shape.

3. The evaporator of claim 2 , wherein the refrigerant is conveyed into the evaporator through the inlet pipe, the refrigerant flows sequentially through the first area from the first line of the first header tank to the first line of second header tank, the second area from the first line of the second header tank to the first line of the first header tank, the third area from the first line of the first header tank to the first line of the second header tank, the fourth area from the first line of the second header tank to the first line of the first header tank, the fifth area from the second line of the first header tank to the second line of the second header tank, the sixth area from the second line of the second header tank to the second line of the first header tank, the seventh area from the second line of the first header tank to the second line of the second header tank, and the eight area from the second line of the second header tank to the second line of the first header tank, the refrigerant discharged from the evaporator through the outlet pipe.

4. The evaporator of claim 3 , wherein the plurality of tubes have a flow path area equal to each other and a full circumference length equal to each other.

5. The evaporator of claim 4 , wherein each of the plurality of tubes have a hydraulic diameter in a range of about 1.0 millimeters to about 2.8 millimeters, the hydraulic diameter is defined by the following equation:
hydraulic diameter=4*( St )/( Lt ),
wherein St is the flow path area of each of the plurality of tubes and Lt is the full circumference length of each of the plurality of tubes.

6. The evaporator of claim 5 , wherein a width of the core part is in a range of about 150 millimeters to about 300 millimeters.

7. The evaporator of claim 4 , wherein a total number of the plurality of tubes forming the eighth area is one of less than and equal to a total number of the plurality of tubes in the seventh area.

8. The evaporator of claim 4 , wherein a total number of the plurality of tubes in the seventh area is one of less than and equal to a total number of the plurality of tubes in the sixth area.

9. The evaporator of claim 4 , wherein a total number of the plurality of tubes in the sixth area is one of less than and equal to a total number of the plurality of tubes in the fifth area.

10. The evaporator of claim 4 , wherein a total number of the plurality of baffles in the first header tank is equal to a total number of the plurality of baffles in the second header tank, and wherein each of the first line of the first header tank, the second line of the first header tank, the first line of the second header tank, and the second line of the second header tank has at least one of the plurality of baffles disposed therein.

11. The evaporator of claim 9 , wherein the at least one baffle disposed in the first line of the first header tank aligns with the at least one baffle disposed in the second line of the first header tank with respect to a length direction of the evaporator and the at least one baffle disposed in the first line of the second header tank aligns with the at least one baffle disposed in the second line of the second header tank with respect to the length direction of the evaporator.

12. The evaporator of claim 10 , wherein the first area aligns with the eighth area with respect to the length direction of the evaporator, the second area aligns with the seventh area with respect to the length direction of the evaporator, the third area aligns with the sixth area with respect to the length direction of the evaporator, and the fourth area aligns with the fifth area with respect to the length direction of the evaporator.

13. The evaporator of claim 11 , wherein a total number of the plurality of tubes in the the first area is equal to a total number of the plurality of tubes in the eighth area, a total number of the plurality of tubes in the second area is equal to a total number of the plurality of tubes in the seventh area, a total number of the plurality of tubes in the third area is equal to a total number of the plurality of tubes in the sixth area, and a total number of the plurality of tubes in the fourth area is equal to a total number of the plurality of tubes in the fifth area.

Assignees

• Hanon Systems

Inventors

• Lee Duck-Ho

Classifications

• F28F2009/0297

  Side headers, e.g. for radiators having conduits laterally connected to common header · CPC title

• F28F9/0204

  for elongated header box, e.g. with transversal and longitudinal partitions · CPC title

• F25B39/02 Primary

  Evaporators · CPC title

• F28D1/05391 Primary

  with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators · CPC title

• B60H1/3227 Primary

  characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator (condensed liquid drainage means B60H1/3233) · CPC title