Heat-dissipating assembly of computer housing

A heat-dissipating assembly of a computer housing with airways includes a casing. The casing is provided with a first partition and a second partition thereon. The first partition has a recessed space. The first partition is provided thereon with a plurality of penetrating troughs. The second partition is provided with a plurality of air-introducing ports thereon. The positions of the air-introducing ports and the positions of the penetrating troughs of the first partition are staggered respectively. Finally, the back and top of the casing are provided at least one fan respectively. Via this arrangement, after the external air enters the recessed space through the plurality of air-introducing ports, the external air is drawn into the casing by the fan on the first partition to perform an air-cooling effect and the heat dissipation. Finally, the air is drawn out of the casing by the fans provided on the top and back of the casing. Therefore, not only a good heat-dissipating effect can be achieved, but also the noise is reduced.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a heat-dissipating assembly, and in particular to a heat-dissipating assembly provided on a computer housing.

2. Description of Prior Art

With the continuous miniaturization of electronic products and the promotion of modem materials and advanced techniques, electronic elements generate a great amount of heat in operation. In order not to affect the operation of electronic elements as a result of the elevated-temperature environment caused by the heat source, the demand for the heat dissipation also increases continuously. Therefore, the heat-dissipating efficiency has become a very important factor in assuring the normal operation of the electronic elements.

Especially, since a computer host is formed by means of assembling various electronic elements (such as a main board, power supply, hard disk or the like) within a housing, and all of the above elements generate a great amount of heat in operation, the most common way in prior art is to mount a fan directly on the heat-generating electronic elements. The rotation of blades of the fan can cause the air surrounding the electronic elements to flow rapidly and take away the heat generated by the electronic elements, thereby achieving the heat dissipation of the electronic elements.

Although the fan can be considered as a simple device for dissipating the heat within the casing rapidly, in general, the heat-dissipating effect of the fan only reaches the surface that contacts the electric elements. Further, if several heat-dissipating fans operate simultaneously in a narrow computer casing, the heat may not be dissipated efficiently, increasing the temperature within the casing. Under the vicious circle of heat accumulation, the temperature within the casing cannot be kept in a normal range, affecting the operation of whole computer host.

In order to solve the increase in the temperature within the housing, a later-developed technique has attempted to provide the fans on the bottom and back of the casing respectively. By employing a principle that hot air can rise, the rotation of the fan provided on the bottom introduces the external cool air into the casing to perform a heat exchange. Further, the internal hot air is drawn to the outside via the fan provided on the back. In this way, the increase in the temperature within the casing can be abated.

The above solution can lower the temperature within the computer housing so as to control the temperature in a normal range and assure the operation of the computer host, however, since the efficiency of the fan provided on the bottom of the casing is affected by the position thereof, the efficiency of introducing air into the casing is not good and thus it is impossible to generate a great amount of air into the housing to perform an air-cooling effect and the heat dissipation. In addition, in operation, the fan provided on the bottom is used to draw the external air directly, which also generates unfavorable noise and causes the casing to vibrate. As a result, the electronic elements in the casing are not steady. Therefore, it is necessary to improve the conventional heat-dissipating structure.

SUMMARY OF THE INVENTION

In view of the above drawbacks, the present invention is to provide a heat-dissipating assembly of a computer housing with airways. By providing two layers of air-introducing means on the computer housing, and cooperating with the effect of a fan on the housing, the external air can be introduced into the housing rapidly to perform the heat dissipation. Also, the noise generated by the fan can be lowered.

The present invention provides a heat-dissipating assembly of a computer housing, which is mainly constituted of a casing. The casing is provided with a first partition and a second partition thereon. The first partition has a recessed space. The first partition is provided thereon with a plurality of penetrating troughs. The second partition is provided with a plurality of air-introducing ports thereon. The positions of the air-introducing ports and the positions of the penetrating troughs of the first partition are staggered respectively. Finally, the back and top of the casing are provided at least one fan respectively. Via this arrangement, after the external air enters the recessed space through the plurality of air-introducing ports, the external air is drawn into the casing by the fan on the first partition to perform an air-cooling effect and the heat dissipation. Finally, the air is drawn out of the casing by the fans provided on the top and back of the casing. Via this arrangement, not only a good heat-dissipating effect can be achieved, but also the noise is reduced.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1andFIG. 2are the exploded perspective view and the assembled perspective view showing the structure of the present invention respectively. As shown in these figures, the heat-dissipating assembly of the computer housing is mainly constituted of a casing1. The bottom of the casing1has a first partition11and a second partition12. The first partition11has a recessed space111that is recessed inwardly. The surface of the first partition11is provided with at least one penetrating trough112(two in the present embodiment). One of the penetrating troughs112is exactly provided below a power supply unit20. The second partition12is provided below the first partition11and is connected with the bottom of the casing1. The second partition12is provided with at least one air-introducing port121(two in the present embodiment). The positions of the air-introducing ports121and the positions of the penetrating troughs112of the first partition11are staggered respectively. Further, the second partition12is connected with a sliding plate13thereon. The sliding plate13is provided with at least one air filter131(two in the present embodiment). The positions of the air filters131correspond to the air-introducing ports121on the second partition12exactly, thereby blocking foreign matters from entering the casing1. Further, the top surface of the casing1is provided with at least one fan2(two in the present embodiment). Further, the back surface of the casing1is provided with at least one fan2. The complete assembly of the present invention is shown inFIG. 2.

With reference toFIG. 3, it is a cross-sectional view showing the operation of the present invention. As shown in the figure, after the second partition12is assembled to the bottom of the casing1, the casing1is supported upwardly so that the recessed space111of the first partition11forms a substantial airway between the first partition11and the second partition12. When the external air enters through the air-introducing ports121of the second partition12(the direction of airflow is indicated by arrows), the air passes through the air filters131to enter the recessed space111. Via the rotation of blades, the fans2provided on the top and back of the casing1force the air within the casing1to flow, and then causes the air in the recessed space11to flow into the casing1through the penetrating troughs112of the first partition11so as to heat-exchange with the heat generated by the electronic elements within the casing1. Finally, the air that has absorbed the heat is exhausted to the outside of the casing1via the fans2provided on the top and back of the casing1, thereby enhancing the heat dissipation in the casing1.

With reference toFIG. 4, it shows another embodiment of the present invention. As shown in this figure, the penetrating troughs112provided on the first partition11of the casing1can be also provided with a fan2(one in this figure). With the fan2provided on the first partition11, the air entering the recessed space111through the air-introducing ports121of the second partition12is forced by the fan2to flow. Then, the air enters the casing1to heat-exchange with the heat generated therein. Finally, the air that has absorbed the heat is drawn out of the casing1by the fans2provided on the top and back of the casing1. With this arrangement, in order to provide an air-cooling effect and the heat dissipation for the interior of the whole computer casing1, the recessed space111is designed to reduce the noise generated by the air colliding with the fans2of the penetrating troughs12during the drawing of air, thereby achieving a muting effect.

With reference toFIG. 5, it shows another embodiment of the present invention. The above-mentioned first partition11and the second partition12are provided on the bottom of the casing1. Alternatively, in the present embodiment, the first partition11and the second partition12are provided on both sides of the casing1. As shown in this figure, the first partition11has a recessed space111. The first partition11is provided with at least one penetrating trough112(two in the present embodiment) at a position adjacent to the bottom thereof. Both penetrating troughs112are provided with a fan2. The second partition12is provided at the outside of the first partition11and is connected with the casing1. The second partition12is provided with at least one air-introducing port121(two in the present embodiment) at a position adjacent to the bottom thereof. The positions of the air-introducing ports121and the positions of the penetrating troughs112of the first partition11are staggered respectively. Further, the air-introducing port121is provided with an air filter3for blocking foreign matters from entering the casing1. Finally, the top and back of the casing1are provided with at least one fan2. In the present embodiment, the top of the casing1is provided with two fans2, while the back thereof is provided with a fan2. Via this arrangement, when the external air enters the recessed space111formed in the first partition11through the air-introducing ports121by means of natural convection, since the recessed space111forms a substantial airway, the fans2provided on the first partition12force the air to enter the casing1so as to perform the air-cooling action and heat-exchange with the electronic elements within the casing1. Finally, the air that has absorbed the heat is exhausted to the outside of the casing1via the fans2provided on the top and back of the casing1, thereby enhancing the efficiency of the heat dissipation in the casing1.