Radiator and heatsink apparatus having the radiator

• US 20060254752A1
• Filed: 04/04/2006
• Published: 11/16/2006
• Est. Priority Date: 04/06/2005
• Status: Abandoned Application

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Utsunomiya, Wataru, Hatanaka, Youichi, Narakino, Shigeru
• Application Number:
  US11/396,510
• Publication Number:
  US 20060254752A1
• Time in Patent Office: Days
• US Class Current: 165/80.400
• CPC Class Codes: F28D 1/0316 Assemblies of conduits in parallel F28D1/0325, F28D1/035 take precedence
• CPC Class Codes: F28D 1/035 with U-flow or serpentine-flow inside the conduits F28D1/0341 takes precedence
• CPC Class Codes: F28D 1/0358 the conduits being formed by bent plates
• CPC Class Codes: F28D 2021/0031 Radiators for recooling a coolant of cooling systems
• CPC Class Codes: F28F 2250/08 Fluid driving means, e.g. pumps, fans
• CPC Class Codes: F28F 9/262 for radiators F28D1/0408 takes precedence
• CPC Class Codes: H01L 23/473 by flowing liquids H01L23/4332, H01L23/4338 take precedence
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

A radiator includes: an inlet header having a hollow shape and being provided with an inlet for the coolant to enter; a plurality of flat tubes connecting to the inlet header on one end; and an outlet header having a hollow shape and being provided with an outlet for the coolant to discharge, the outlet header connecting to another end of the plurality of flat tubes. The plurality of flat tubes form channels for the coolant and connect the inlet header and the outlet header.

Claims

1. A radiator comprising:

a first header having a hollow shape and being provided with an inlet for a coolant;

flat tubes having channels for the coolant and being connected to the first header; and

a second header having a hollow shape, being provided with an outlet for the coolant and being connected to another end of the flat tubes, wherein;

the flat tubes have planar portions along the channels; and

the flat tubes are provided between the first header and the second header and are stacked in layers.

3. The radiator according to one of claims 1 and 2, wherein two sheets of a same flat plate having a channel on one side are bonded to form the flat tube.

4. The radiator according to one of claims 1 and 2, wherein a flat plate having a channel on one side and a flat plate having no channel are bonded to form the flat tube.

5. The radiator according to one of claims 3 and 4, wherein the channel provided on the flat plate is press-formed.

6. The radiator according to one of claims 1 and 2, wherein the channels provided in the flat tubes have a serpentine shape.

7. The radiator according to one of claims 1 and 2, wherein the channels provided in the flat tubes have on an internal surface thereof at least one projection.

8. The radiator according to one of claims 1 and 2, wherein the flat tubes have on an external surface thereof at least one projection.

9. The radiator according to one of claims 1 and 2, wherein the flat tubes have at least one height difference.

10. The radiator according to one of claims 1 and 2, wherein the coolant is an antifreeze solution.

11. A heatsink apparatus having the radiator according to one of claims 1 to 10.

12. A heatsink apparatus having the radiator according to one of claims 1 to 10, which has L-shaped flat tubes, and a radial fan.

13. A heatsink apparatus having the radiator according to one of claims 1 to 10, which has U-shaped flat tubes, and a radial fan.

14. A heatsink apparatus having the radiator according to one of claims 1 to 10, which has annular flat tubes, and a radial fan.

2. A radiator circulating a coolant therein and dissipating heat of the coolant, the radiator comprising:

an inlet header having a hollow shape and being provided with an inlet for the coolant to enter;

a first group of flat tubes connecting to the inlet header on one end;

an intermediate header having a hollow shape and connecting to another end of the first group of flat tubes;

a second group of flat tubes connecting to the intermediate header on one end; and

an outlet header having a hollow shape, being provided with an outlet for the coolant to discharge and connecting to another end of the second group of flat tubes;

wherein

the first group and the second group of flat tubes form channels for the coolant and connect the inlet header and the outlet header having the intermediate header therebetween.