Patent Application
20070004327
1. Field of Invention
The invention relates to a heat dissipation system and an anti-backflow device thereof.
2. Related Art
With the progress in technology, the performance of electronic products becomes much better. However, if the heat generated during the operation of the electronic products is not properly removed in time, the efficiency of the electronic products would decrease and they may even be burnt out. To remove the generated heat, the heat dissipation system has become one of the essential components in the present electronic products.
Please refer to
However, in the above mentioned assembling procedure, the fastening frames 14 may be deformed if the mechanical strength thereof is unreliable. Thus, the heat dissipation system 1 can not be assembled easily, and the assembling steps become more complex. This is inefficient for the present industry requirements.
It is therefore an important subject of the invention to provide a heat dissipation system that can reduce the deformation of components and simplify the assembling steps for increasing the manufacturing speed.
In view of the foregoing, the invention is to provide a heat dissipation system and an anti-backflow device thereof, which have a plurality of flappers pivoted on the case.
To achieve the above, an anti-backflow device of the invention includes a case and a plurality of flappers. In the invention, the case has at least one opening and a plurality of combining portions, which are located at two opposite sides of the opening. The combining portions and the casing are integrally formed. The flappers are arranged in the opening in sequence, and each flapper has a first connecting portion and a second connecting portion. The first connecting portion and the second connecting portion are respectively pivoted on one of the combining portions.
To achieve the above, a heat dissipation system of the invention includes a case, a plurality of flappers and at least one fan. In the invention, the case has at least one opening, a containing space, and a plurality of combining portions located at two opposite sides of the opening. The combining portions and the casing are integrally formed. The flappers are arranged in the opening in sequence, and each flapper has a first connecting portion and a second connecting portion. The first connecting portion and the second connecting portion are respectively pivoted on one of the combining portions. The fan is located in the containing space.
As mentioned above, the heat dissipation system and the anti-backflow device thereof have the flappers, which are directly pivoted on the opening of the case. This structure can provide good mechanical strength for preventing the deformation. Accordingly, the assembling procedure can be simplified so as to reduce the production cost.
The invention will become more fully understood from the detailed description given herein below illustration only, and thus is not limitative of the present invention, and wherein:
The present invention will be apparent from the following detailed description, which proceeds with reference to the accompanying drawings, wherein the same references relate to the same elements.
Please refer to
In the embodiment, the case 31 includes a first housing 311 and a second housing 312. The first housing 311 has a plurality of inlets 3111. In this case, the first housing 311 and the second housing 312 are assembled by way of welding, riveting, screwing, adhering, wedging, clipping engaging, or the likes. Alternatively, the case 31 can be integrally formed. Accordingly, the case 31 can provide an opening 313 and a containing space constructed by the assemblage of the housings 311 and 312. The partition 33 is disposed between the housings 311 and 312 to divide the opening 313 into sub openings 313a and 313b. Besides, the partition 33 has a plurality of combining portions, such as the connecting holes 3131 in this embodiment, located at two sides of the partition 33.
Furthermore, there are plural combining portions, such as the connecting holes 3131 in this embodiment, located at two opposite sides of the sub openings 313a and 313b, and the case 31 and the combining portions are integrally formed. Besides, there is a corresponding sliding hole 3132 disposed adjacent to each connecting hole 3131. In the present embodiment, the sliding hole 3132 has a curved shape.
In the embodiment shown in
The flappers 32 are arranged in the sub opening 313a or 313b in sequence. The connecting shafts 3211 are respectively pivoted on the connecting holes 3131, and the sliding pillars 3212 are respectively pivoted on and inserted into the sliding holes 3132. In the embodiment shown in
In this case, the flapper 32 utilizes its sliding pillars 3212 to pivot on the sliding holes 3132. Thus, when the air is blown from the interior of the case 31 to the exterior, the flapper 32 is pushed by the air and the pillars 3212 slid along the connecting holes 3132. Then, the pillars 3212 are stopped when they slid to the ends of the connecting holes 3132. In other words, the ends of the sliding holes 3132 are for blocking the flapper 32 and thus restricting the open angle and direction of the flapper 32. To be noted, the curved shape of the sliding hole 3132 can be designed according to the desired open angle and direction of the flapper 32.
Of course, the opening 313 may have a plurality of protrusions (not shown) disposed at two sides of the opening 313. The protrusions are used as the blockers for blocking the flapper 32 and thus restricting the open angle and direction of the flapper 32. For example, if the protrusions are located at the two sides of the opening 313 and close to the interior of the case 31, the flapper 32 can be blocked from being opened toward the interior of the case 31. Accordingly, the external air can be prevented from being blown into the case 31.
The assembling procedure of the anti-backflow device 3 includes the following steps. First, the first housing 311, the second housing 312 and the partition 33 are combined to form the sub openings 313a and 313b. Then, the flappers 32 are installed in the sub openings 313a and 313b for finishing the assembling procedure. Since the first housing 311 and the second housing 312 have good mechanical strength, the deformations of the conventional art would not happen. Besides, the components of the invention are simplified, so that the anti-backflow device 3 of the invention is easily assembled.
In still another embodiment not shown in the figure, the first connecting portion 321 of the flapper 32 has the connecting shaft 3211 and the sliding pillar 3212, while the second connecting portion 322 has the connecting shaft 3211 only. This configuration can also achieve the above-mentioned effect.
Please refer to
In summary, the heat dissipation system and the anti-backflow device thereof have the flappers, which are directly disposed on the opening of the case. This structure can provide good mechanical strength for preventing the deformation. Moreover, the components of the invention are simplified. Compared with the conventional heat dissipation system, the system of the invention has the advantages of hard to be deformed and reduced components. Accordingly, the assembling procedure can be simplified so as to reduce the production cost.
Although the invention has been described with reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternative embodiments, will be apparent to persons skilled in the art. It is, therefore, contemplated that the appended claims will cover all modifications that fall within the true scope of the invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 094211016 | Jun 2005 | TW | national |
