Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Reexamination Certificate
2002-10-15
2003-05-13
Thompson, Gregory (Department: 2835)
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
C454S184000
Reexamination Certificate
active
06563708
ABSTRACT:
BACKGROUND OF THE INVENTION
(a) Field of the Invention
The invention provides an improved heat dissipating assembly for a server box body, more particularly to a heat concentration area between a main board and a front side of a heat dissipating plate within a housing so that hot air is converged therein and then extracted by use of a plurality of powerful turbo type fans within air-absorbing portions. The invention provides uniform dissipation of heat and is safer in use as compared to individual air extraction in the prior art.
(b) Description of the Prior Art
A conventional server for industrial use is shown in
FIGS. 4 and 5
, and has a box body
60
and an upper cover
67
forming a housing of the server, within which are provided about
20
main boards
80
and heat dissipating plates
90
. The cross section of the box body
60
is a U-shaped structure. A grid plate
63
is erected at a suitable central position. An upper end of one side of the grid plate
63
is provided with a plurality air-absorbing portions
64
having fans
70
therein. The lower end is provided with a socket disk
65
. The rear end of the socket disk
65
is connected to other components. A specific space of the base plate on the other side of the grid plate
63
is provided with a partition plate
61
, which forms an air channel
66
with the base plate, and the outer side end portion is provided with an air vent
62
.
The upper front end of the main board
80
is provided with a central processing unit
81
, which is the major source of heat. Therefore, the other side thereof is provided with a heat dissipating plate
90
having a fan
91
. The fan
91
on the heat dissipating plate
90
draws the air current from the air vent
62
through the air passage
66
upwardly over the heat absorbed by the heat dissipating plate
90
through the grid plate
63
, and the fan
70
of the air-absorbing portion
64
brings the hot air away from the box body
60
. The above is the heat dissipating assembly of the conventional server.
As the conventional structure is not ideal in design, there are the following advantages in use:
1. Since the fan casing of the air-absorbing portion at the front end of the box body is directly coupled to the main board at the rear side, and draws hot air generated thereby, and since the heat generating condition of each main board is different, and the extraction capability of each fan also differs, as well as there are air turbulence within the interior at different positions, the amount of air exhausted by each fan is different. Therefore, there is the problem of uneven heat dissipation.
2. Given the above, since heat dissipation is uneven, the main board which is disposed at a position not good for heat dissipation is often damaged, which leads to increase of replacement parts and costs.
3. Given the above, if the fan of one of the air-absorbing portions malfunctions and is not discovered, the corresponding main board is likely to be damaged, which may affect the other components.
4. Therefore, if the fan in any one of the air-absorbing portions is broken, it has to be replaced immediately, which is troublesome in terms of maintenance. Besides, labor costs increase.
SUMMARY OF THE INVENTION
Therefore, the primary object of the invention is to design a structure that can dissipate heat uniformly and satisfactorily. Since the heat dissipation is uniform, even if any one of the fans is broken, the other fans can dissipate the heat therefor temporarily so as to protect the main board and other components.
To achieve the above object, the invention includes a box body with a U-shaped cross section and a sealing cover. The box body has a grid plate transversely erected at the center. An upper end of one side of the grid plate is provided with a plurality of air-absorbing portions having fans therein. A base plate on the other side of the grid plate is provided with a partition plate such that an air channel is formed between the partition plate and the base plate. A component unit formed by a main board and a heat dissipating plate are insertably disposed on the partition plate. A suitable clearance is formed between a rear side of the grid plate of the box body and the partition plate. A socket disk of a height lower than the grid plate is disposed in the clearance. A sealing plate is disposed on a top portion of the socket disk such that a specific clearance is formed between the sealing plate and a top portion of the box body. A heat concentration area is formed among the sealing cover, the grid plate and the sealing plate for exhausting hot air of the main board and the heat dissipating plate to be discharged by the fans of the air-absorbing portions at the same time. Hence, dissipation and extraction of heat is more uniform and safe.
REFERENCES:
patent: 5027254 (1991-06-01), Corfits et al.
patent: 5193050 (1993-03-01), Dimmick et al.
patent: 6392872 (2002-05-01), Doustoyu, III et al.
patent: 6466441 (2002-10-01), Suzuki et al.
patent: 6483699 (2002-11-01), Salmonson et al.
Chan Chen-Hao
Chen Hsiang-Chan
NEXCOM International Co., Ltd.
Thompson Gregory
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