Heat exchange – With retainer for removable article – Electrical component
Reexamination Certificate
2001-05-04
2002-01-01
Flanigan, Allen (Department: 3743)
Heat exchange
With retainer for removable article
Electrical component
C165S121000, C361S697000
Reexamination Certificate
active
06334481
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a retainer for a cooling device, and particularly to an improved retainer for a fan attached to cooling plates.
2. Description of Related Art
Presently, it is known that the computer is required equipment for an individual or a company and the running speed of computer is important to the user. However, the central processing unit (CPU), the printer, and chips for the computer having a high executing speed may overheat, resulting damage to the CPU, chips and etc. in the computer. In order to reduce the temperature of the CPU effectively, an extruded aluminum cooling plate device
2
′ is mounted on the CPU and a fan
1
′ is fixedly attached to the cooling plate device
2
′ by way of screws
3
′ being fastened between two neighboring cooling fins
21
′ on the cooling plate
2
′ as shown in
FIG. 1
to perform the function of dissipating the generated heat. To permit greater executing speed of the CPU one may increase the rotation speed of fan or reduce the thickness cooling plate
2
′ as shown in FIG.
2
. In order to improve heat transfer, the thickness of each cooling plate is reduced to 0.2~0.6 mm. But, reducing the thickness of the respective cooling plate so much leads to a reduced strength thereof, and it is difficult to attach the fan
1
′ to the cooling plates
2
′. In order to attach the fan a plurality of hook locks
11
′ are arranged to extend downward from the fan
1
′ to engage with the bottom part of the cooling plates
22
′, as shown in FIG.
2
. However, the hook locks
11
′ are extremely long and easily broken, resulting in a defect of fan
1
′ loosening and falling. Referring to
FIG. 3
, support frames
23
′ are provided around the cooling plates by way of welding and the fan
1
′ engages with the lower part
22
′ of the cooling plates instead of hook locks shown in FIG.
2
. Although the fan
1
′ can be steadily supported by the support frames
23
′, it is a tedious job to weld the metal made support frame
23
′ to the cooling plates.
SUMMARY OF THE INVENTION
A retainer for a cooling device according to the present invention comprises a locating frame for fixing a fan, a plurality of parallel fixing plates extending downward from the locating frame, and a cooling plate device with a plurality of cooling fins which can engage the fixing plates. The fixing plates are arranged in pairs, and there is a gap provided between these two neighboring fixing plates for accommodating two cooling fins. A locating through hole is provided in the locating frame corresponding to each fixing plate pair. As soon as the screws are turned to pass through each locating through hole respectively, the threads on each screw may force the two neighboring cooling fins to tightly engage with each pair of fixing plates.
An object of the present invention is to provide a retainer for a cooling device, in which a locating frame can be arranged to support a fan steadily.
Another object of the present invention is to provide a retainer for a cooling device, in which a plurality of fixing plates extend downward in pairs, with a gap in between just for fitting two cooling fins only.
A further object of the present invention is to provide a retainer for a cooling device, in which a plurality of locating through holes are arranged in the locating frame to correspond to the fixing plate pairs.
A further object of the present invention is to provide a retainer for a cooling device, in which a plurality of screws pass through the locating holes with the threads thereon to press the two cooling fins fitting in each pair of fixing plates tightly against the corresponding fixing plate.
REFERENCES:
patent: 5486980 (1996-01-01), Jordan et al.
patent: 5947192 (1999-09-01), Kuo
patent: 6071185 (2000-01-01), Kuo
patent: 6116435 (2000-09-01), Young
patent: 6118657 (2000-09-01), Clemens
patent: 2000-31354 (2000-01-01), None
Asia Vital Components Co. Ltd.
Bacon & Thomas PLLC
Flanigan Allen
LandOfFree
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