Heat dissipation device
View Patent ↗A heat dissipation device includes a fin unit ( 50 ), and at least a heat pipe ( 30 ) including an evaporating section ( 32 ) and at least a condensing section ( 34 ) extending through the fin unit. The fin unit includes a plurality of fins stacked together. Each fin comprises a wavy and a V-shaped section ( 52,53 ) and a planar section ( 54 ) therebetween. The wavy and V-shaped sections of the fins can guide an airflow flowing into the fin unit to smoothly flow therethrough, and prevent escape of the airflow from lateral directions of the fin unit. Furthermore, the wavy and V-shaped sections increase the heat dissipation area of the fins and strengthen the fins.
1. A heat dissipation device comprising:
a fin unit comprising a plurality of fins stacked together; and
at least a heat pipe comprising an evaporating section and a condensing section extending through the fin unit;
wherein each fin comprises a wavy section and a deformed section and a planar section interconnecting the wavy section and the deformed section.
2. The heat dissipation device as described in claim 1 , wherein the each fin further comprises an edge section extending outwardly from an outer edge of the deformed section, the deformed section being V-shaped.
3. The heat dissipation device as described in claim 2 , wherein the wavy section comprises a plurality of serrate sections, an included angle of each of the serrate sections of the wavy section is smaller than that of the V-shaped deformed section.
4. The heat dissipation device as described in claim 3 , wherein the included angle of each of the serrate sections of the wavy section is about 60 degrees, and the included angle of the V-shaped deformed section is about 120 degrees.
5. The heat dissipation device as described in claim 2 , wherein the wavy section has a thickness which is smaller than that of the planar section.
6. The heat dissipation device as described in claim 2 , wherein the each fin further comprises another V-shaped deformed section and another planar section interconnecting the wavy section and the another V-shaped deformed section.
7. The heat dissipation device as described in claim 6 , wherein a thickness of the planar sections is larger than that of the wavy section and the V-shaped deformed sections.
8. The heat dissipation device as described in claim 6 , wherein at least a latch is bent downwardly from an outer edge of the each fin, the latch fitting in a neighboring fin.
9. The heat dissipation device as described in claim 1 , wherein at least one through hole is defined in the planar section for extension of the condensing section of the at least a heat pipe therethrough.
10. The heat dissipation device as described in claim 1 , further comprising a base for thermally contacting with a heat generating device, the base comprising a bottom and a cover, wherein the bottom wall and the cover together define a space therein for receiving the evaporating section of the at least a heat pipe therein.
11. A heat dissipation device comprising:
a fin unit comprising a plurality of fins stacked together; and
at least a heat pipe comprising a evaporating section and a condensing section extending through the fin unit;
wherein each fin comprises a wavy section and a V-shaped deformed section, the wavy section comprises a plurality of serrate sections, an included angle of each of the serrate sections of the wavy section is different from that of the V-shaped deformed section.
12. The heat dissipation device as described in claim 11 , wherein the included angle of each of the serrate sections is smaller than that of the V-shaped deformed section.
13. The heat dissipation device as described in claim 12 , wherein the included angle of each of the serrate sections is about 60 degrees.
14. The heat dissipation device as described in claim 12 , wherein the included angle of the V-shaped deformed section is about 120 degrees.
15. The heat dissipation device as described in claim 11 , wherein the each fin further comprises another V-shaped deformed section, the two V-shaped deformed sections being arranged at two opposite lateral sides of the wavy section, respectively, a planar section interconnecting the wavy and a corresponding V-shaped deformed section, the condensing section of the at least a heat pipe extending through the planar section.
16. The heat dissipation device as described in claim 11 , wherein the each fin further comprises two edge sections extending outwardly from the V-shaped deformed sections, respectively, the two edge sections each comprising a latch bent from an outer edge thereof, the latch fitting in a neighboring lower fin.
17. A heat dissipation device comprising:
a base having a bottom face for contacting with a heat generating device;
a heat pipe having an evaporating section connected to the base and a condensing section extending upwardly from the evaporating section; and
a plurality of fins connected to the condensing section of the heat pipe, each fin having a middle wavy section and two V-shaped sections each located at a lateral side of the middle wavy section.
18. The heat dissipation device as described in claim 17 , wherein each of the V-shaped section defines an included angle of about 120 degrees, and the wavy section includes a plurality of serrations each defining an included angle of about 60 degrees.
19. The heat dissipation device as described in claim 18 , wherein the each fin further comprises a planar section interconnecting the wavy section and a corresponding V-shaped section, the condensing section extending through the planar section.
20. The heat dissipation device as described in claim 19 , wherein the each fin further comprises an edge section extending outwardly from a corresponding V-shaped section, the edge section forming a downwardly bent latch and a notch at a location corresponding the latch, the latch fitting in the notch of a neighboring fin.