HEAT DISSIPATING APPARATUS WITH VORTEX GENERATOR
A heat dissipating apparatus with a vortex generator includes a heat conducting base, a heat pipe, and a plurality of heat dissipating fins. Each heat dissipating fin has a vortex generator installed thereon and disposed adjacent to a side of the heat pipe. The vortex generator has two guiding oblique surfaces protruding from a surface of the heat dissipating fin. The two guiding oblique surfaces are disposed with an included angle there between. A through hole is formed at a position opposite to a side of the heat dissipating fin, such that the vortex generator of each heat dissipating fin induces a stack effect at corresponding upper and lower parts of the heat dissipating fin to improve the heat dissipating efficiency.
Latest Patents:
The present invention relates to a heat dissipating apparatus, in particular to a heat dissipating apparatus capable of generating vortices by a vortex generator and providing a stack effect.
BACKGROUND OF THE INVENTIONIn recent years, vortex generator is considered as one of the passive thermal conductivity enhancement technologies, and it combines small protrusions such as embossments, stamps and punches with a main thermal exchange surface such as the surface of a heat dissipating fin by a manufacturing method, thereby preventing possible separations occurred at the boundary and reducing frictions. In addition to the advantage of having a better thermal conductivity enhancement of the heat dissipating fin, the vortex generator also has a smaller pressure drop.
In the past, vortex generators applied to heat dissipating fins generally use vortex energy to facilitate an exchange of heat with air. However, the effect is still not good enough, because the produced vortices only flow in a direction based on the airflow direction of a fan. If no airflow is driven by the fan or a stagnancy is caused by too much accumulated heat, the heat exchange effect of the conventional vortex generators will be so small that the heat dissipating efficiency cannot be enhanced.
In view of the aforementioned shortcomings of the prior art, the present Inventor proposes a novel and reasonable structure based on years of experience in the related industry and extensive researches.
SUMMARY OF THE INVENTIONTherefore, it is a primary objective of the present invention to provide a heat dissipating apparatus with a vortex generator. Each heat dissipating fin is provided with the vortex generators, so that the heat dissipating apparatus can induce a stack effect by means of the vortex generators on and below each heat dissipating fin. In this way, the heat accumulated between the respective dissipating fins can be dissipated to achieve the heat dissipating effect automatically.
To achieve the foregoing objective, the present invention provides a heat dissipating apparatus with a vortex generator, which comprises: a heat conducting base, at least one heat pipe, and a plurality of heat dissipating fins, wherein the heat pipe is coupled to the heat conducting base and sequentially penetrating the heat dissipating fins, each heat dissipating fin includes a vortex generator installed thereon and disposed adjacent to a side of the heat pipe, each vortex generator has two guiding oblique surfaces erected from a surface of the heat dissipating fin, the two guiding oblique surfaces are arranged with an included angle therebetween, a through hole is formed at a position opposite to a side of the heat dissipating fin.
In comparison with prior art, the present invention has advantages as follows. Since the vortex generators protrude from each heat dissipating fin, the total area for heat dissipation will be increased. Further, since external cold air flowing through the adjacent two heat dissipating fins is disturbed by the protruding vortex generators, it takes more time for the external cold air to pass through the adjacent two heat dissipating fins, so that the time for heat exchange is extended and thus the heat transfer is improved greatly.
The technical characteristics and contents of the present invention will become apparent with the following detailed description and related drawings. The drawings are provided for the purpose of illustrating the present invention only, but not intended for limiting the scope of the invention.
With reference to
The heat conducting base 1 is made of a material with good thermal conductivity such as aluminum and copper and substantially in form of a plate adhered to a heat-generating electronic component (not shown in the figure) such as a CPU of a computer. The heat pipe 2 is coupled to the heat conducting base 1 and sequentially penetrates through the heat dissipating fins 3, such that the heat conducting base 1 can absorb the heat generated by the heat-generating electronic component and conduct the heat to each heat dissipating fin 3 quickly. More specifically, each heat dissipating fin 3 has a corresponding penetrating hole 30 formed thereon and a circular flange 31 protrudes from the periphery of each penetrating hole 30. The heat pipe 2 passes through the penetrating hole 30 of each heat dissipating fin 3 and closely contacts each circular flange 31. In this preferred embodiment of the invention, there is a plurality of heat pipes 2.
With reference to
With reference to
In
With the aforementioned assembly, the heat dissipating apparatus with a vortex generator of the present invention can be achieved.
In
Each auxiliary vortex generator 5 as shown in
With reference to
To sum up the above, the present invention improves over the prior art and complies with the patent application requirements, and thus is duly filed for patent application.
While the invention has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims.
Claims
1. A heat dissipating apparatus with a vortex generator, comprising:
- a heat conducting base (1);
- a heat pipe (2), coupled to the heat conducting base (1); and
- a plurality of heat dissipating fins (3), sequentially penetrated by the heat pipe (2);
- wherein each heat dissipating fin (3) has a vortex generator (4) installed thereon and disposed proximate to a side of the heat pipe (2), the vortex generator (4) has two guiding oblique surfaces (40), (41) arranged with an included angle therebetween, and a through hole (32) is formed at a position opposite to a side of the heat dissipating fin (3).
2. The heat dissipating apparatus with a vortex generator of claim 1, wherein the heat conducting base (1) is substantially a plate.
3. The heat dissipating apparatus with a vortex generator of claim 1, wherein each of the heat dissipating fins (3) has a corresponding penetrating hole (30) for allowing the heat pipe (2) to pass through.
4. The heat dissipating apparatus with a vortex generator of claim 3, wherein each penetrating hole (30) has a circular flange (31) protruding from the periphery of the penetrating hole (30) for keeping a close contact with the heat pipe (2).
5. The heat dissipating apparatus with a vortex generator of claim 1, wherein there is a plurality of heat pipes (2), and each heat pipe (2) has a vortex generator (4) installed on its one side.
6. The heat dissipating apparatus with a vortex generator of claim 1, wherein the two guiding oblique surfaces (40), (41) of each vortex generator (4) have top edges (400), (410) ascendingly protruding from the two guiding oblique surfaces (40), (41) respectively, the top edges (400), (410) of the two guiding oblique surfaces (40), (41) extend downwardly to form included angle lines (L1) respectively that are intersected with each other.
7. The heat dissipating apparatus with a vortex generator of claim 6, wherein the included angle formed by intersecting the two included angle lines (L1) is equal to 60°.
8. The heat dissipating apparatus with a vortex generator of claim 1, wherein the two guiding oblique surfaces (40), (41) of each vortex generator (4) have an aspect ratio of 2:1.
9. The heat dissipating apparatus with a vortex generator of claim 1, wherein each heat dissipating fin (3) includes a plurality of auxiliary vortex generators (5) arranged transversally on the heat dissipating fin (3).
10. The heat dissipating apparatus with a vortex generator of claim 9, wherein each auxiliary vortex generator (5) has two guiding oblique surfaces (50) protruding from a surface of the heat dissipating fin (3), the two guiding oblique surfaces (50) protrude in a tapered form, a through hole (51) is formed at a corresponding position penetrating through the heat dissipating fin (3).
11. The heat dissipating apparatus with a vortex generator of claim 10, wherein the two guiding oblique surfaces (50) of each auxiliary vortex generator (5) have an included angle of 30°.
12. The heat dissipating apparatus with a vortex generator of claim 10, wherein the two guiding oblique surfaces (50) of each auxiliary vortex generator (5) have an aspect ratio of 2:1.
13. The heat dissipating apparatus with a vortex generator of claim 10, wherein the through hole (51) of each auxiliary vortex generator (5) is oriented upwardly and obliquely.
14. The heat dissipating apparatus with a vortex generator of claim 9, wherein the auxiliary vortex generators (5) are provided in pairs.
15. The heat dissipating apparatus with a vortex generator of claim 9, wherein the two guiding oblique surfaces (50) of the auxiliary vortex generator (5) protrude to be intersected to form a ridge (L2), the ridges (L2) of adjacent paired auxiliary vortex generators (5) form an included angle of 60°.
16. The heat dissipating apparatus with a vortex generator of claim 1, wherein each heat dissipating fin (3) further includes a ventilation hole (33) formed at a position proximate to each vortex generators (4), and a tapered circular enclosed portion (34) protrudes upwardly from the periphery of the ventilation hole (33).
17. The heat dissipating apparatus with a vortex generator of claim 16, wherein the circular enclosed portion (34) is disposed between the two guiding oblique surfaces (40), (41).
Type: Application
Filed: May 13, 2011
Publication Date: May 3, 2012
Applicant:
Inventors: Jer-Sheng HWANG (Taoyuan City), Sheam-Chyun Lin (Taoyuan City)
Application Number: 13/106,938
International Classification: F28D 15/04 (20060101);