Heat dissipating device

Details Heat dissipating device Heat dissipating device

2000-06-12

2001-07-10

Lazarus, Ira S. (Department: 3743)

Heat exchange

Intermediate fluent heat exchange material receiving and...

Liquid fluent heat exchange material

C165S104330, C165S080400, C361S699000, C361S700000, C257S714000, C257S715000

Reexamination Certificate

active

06257323

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a heat dissipating device, more particularly to a heat-dissipating device having a relatively high heat dissipating efficiency.
2. Description of the Related Art
FIG. 1
illustrates a conventional heat dissipating device
1
, which is made of aluminum, having a plurality of heat dissipating fins
10
. The conventional heat dissipating device is limited by mold design and requires a minimum thickness of aluminum due to extrusion process constraints. Therefore, the heat dissipating fins
10
are a relatively thick and form a relatively small heat dissipating area, thereby resulting in poor heat dissipating efficiency.
SUMMARY OF THE INVENTION
Therefore, the object of the present invention is to provide a heat dissipating device that can provide a relatively high heat dissipating efficiency.
According to the present invention, a heat dissipating device is used for dissipating heat generated by a heat source, and includes a fluid container, at least one circulating pipe, and a heat dissipating fin unit.
The fluid container is made of a heat conductive material, and has a device contacting side adapted to material, and has a device contacting side adapted to be placed in contact with the heat source, and a pipe connecting side opposite to the device contacting side. The fluid container contains an amount of working fluid therein. The working fluid is capable of changing into fluid vapor when absorbing the heat from the heat source. The fluid vapor is capable of changing into fluid condensate when cooled.
The circulating pipe is made of a heat conductive material, and has a vapor input portion, a condensate output portion, and a plurality of interconnected turns between the vapor input and condensate output portions. The vapor input and condensate output portions are mounted on the pipe connecting side of the fluid container so as to permit the fluid vapor to enter into the circulating pipe via the vapor input portion and so as to permit the fluid condensate to flow back into the fluid container via the condensate output portion.
The heat dissipating fin unit is mounted on the turns of the circulating pipe.


REFERENCES:
patent: 5203399 (1993-04-01), Koizumi
patent: 5269146 (1993-12-01), Kerner
patent: 5729995 (1998-03-01), Tajima
patent: 5737923 (1998-04-01), Gilley et al.
patent: 5998863 (1999-12-01), Kobayashi et al.
patent: 6005772 (1999-12-01), Terao et al.
patent: 6073683 (2000-06-01), Osakabe et al.

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