Metal working – Method of mechanical manufacture – Heat exchanger or boiler making
Reexamination Certificate
2000-08-21
2002-04-16
Cuda-Rosenbaum, I (Department: 3726)
Metal working
Method of mechanical manufacture
Heat exchanger or boiler making
C029S557000, C165S080300
Reexamination Certificate
active
06370774
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a radiator with thin fins, and also relates to a method for manufacturing this particular type of radiator. The method includes steps of forming thin fins and spacers with metal sheets having high coefficient of heat transmission, spacing the fins alternately with the spacers and riveting them together to form an assembly, and grinding a bottom of the assembly to remove unevenness thereof. The radiator so produced includes a plurality of thin fins within a reduced area to create largely increased contact surface with air and thereby enables quick radiation of heat.
It is known that a chip
1
(see
FIG. 9
) used, for example, in a computer would produce large amount of heat when it operates. To radiate the large amount of heat produced by the chip
1
to maintain normal operation of the chip
1
, it is a common practice to associate a radiator with the chip
1
. Conventionally, such radiator is formed from extruded aluminum.
FIG. 1
illustrates an example of such conventional radiator
20
. As can be seen from
FIG. 1
, the radiator
20
mainly includes a flat base
201
and a plurality of radiating ribs
202
vertically extended from and parallelly spaced on a top of the base
201
. The radiator
20
is associated with the chip
1
by flatly attaching the base
201
to a top of the chip
1
, so that heat produced by the chip
1
during operation thereof is absorbed by the base
201
and quickly transmitted to the a plurality of ribs
202
. The ribs
202
provide large contacting surfaces with air to enable quick and continuous radiating of heat into the air via the surfaces of the ribs
202
, so that the chip
1
is able to continue normal operation thereof without the risk of having a rising temperature.
As mentioned above, the radiator
20
is formed from aluminum extrusion. The ribs
202
on the top of the base
201
have a thickness that is restricted by the die through which aluminum material is extruded to form the radiator. It is currently impossible to make the ribs
202
of the extruded aluminum radiator
20
to have a very small thickness to increase the number of ribs
202
that may be provided on the base
201
. The radiator
20
therefore provides only limited surfaces for contacting with air. This fact also inevitably causes the radiator
20
to have only limited radiating performance. Moreover, when the radiator
20
is to be used on a large heat-producing area, it is necessary to cut new dies having increased dimensions in order to extrude more aluminum material to form an enlarged radiator
20
. The cost for cutting the new and large dies would adversely increase the cost of the radiator
20
.
It is therefore desirable to develop a radiator that eliminates the drawbacks existing in the conventional ribbed radiator formed from extruded aluminum.
SUMMARY OF THE INVENTION
A primary object of the present invention is to provide a radiator having a plurality of thin fins and therefore providing largely increased contacting surface with air to enable accelerated radiating of heat.
Another object of the present invention is to provide radiator that has a plurality of thin fins and can be used with a radiator fan to achieve enhanced radiating effect.
The radiator with thin fins is manufactured in the following steps: forming a plurality of thin fins and spacers by punching metal sheets of high coefficient of heat transmission into predetermined shapes, spacing said thin fins alternately with said spacers and binding them into an assembly with a plurality of rivets extended through holes separately formed near lower end at predetermined positions, and grinding a bottom of the assembly to remove unevenness thereof. The radiator manufactured in this method may include increased number of fins within a limited area to create largely increased contact surface with air and thereby enables quick radiation of heat produced by, for example, a chip associated with the radiator.
REFERENCES:
patent: 4669535 (1987-06-01), Seidler
patent: 5419041 (1995-05-01), Ozeki
patent: 5558155 (1996-09-01), Ito
patent: 5758418 (1998-06-01), Chrysler et al.
patent: 6000132 (1999-12-01), Butler
Cuda-Rosenbaum I
Pro-Techtor Inter-national Services
LandOfFree
Radiator with thin fins and method for producing the same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Radiator with thin fins and method for producing the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radiator with thin fins and method for producing the same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2900074