TWI398617B - Heat sink - Google Patents

Description

heat sink

The invention relates to a heat sink.

As the power of the central processing unit of the computer continues to increase, the heat dissipation requirements of the central processing unit are also increasing, which makes the heat sink larger and larger to meet the heat dissipation requirement. The large size of the radiator is not conducive to the packaging and transportation of the radiator, resulting in an increase in packaging and transportation costs.

In view of the above, it is necessary to provide a heat sink that can meet the heat dissipation requirements and can reduce packaging and transportation costs.

A heat sink includes a base, a heat pipe connected to the base, and a first fin set mounted on the heat pipe, the first fin set includes a plurality of first fins, and the heat sink further includes a The second fin set is disposed on the second fin set of the heat pipe, the second fin set includes a plurality of second fins, and the first fins and the second fins are alternately stacked with each other, the second fin set Moving from a first position to a second position, when the second fin set is in the first position, the second fin set retracts the first fin set, when the second fin set is located In the second position, the second set of fins protrudes from the first set of fins.

When the second fin set of the heat sink of the present invention is retracted into the first fin set, the heat sink can be reduced in size for packaging and transportation. When the second fin set is extended from the first fin set, the heat sink can be expanded in size to meet the heat dissipation requirement in use.

10‧‧‧ radiator

20‧‧‧ Pedestal

40‧‧‧heat pipe

60‧‧‧First fin set

80‧‧‧second fin set

41‧‧‧first shot

42‧‧‧second shot

61‧‧‧First fin

82‧‧‧second fin

84‧‧‧Operation Department

1 is a perspective view of a preferred embodiment of a heat sink of the present invention.

Figure 2 is a front elevational view of Figure 1.

Fig. 3 is a view showing a state of use of the heat sink of Fig. 1.

Referring to FIGS. 1 to 3 , a preferred embodiment of the heat sink 10 of the present invention includes a base 20 , a heat pipe 40 , a first fin set 60 , and two second fin sets 80 .

The susceptor 20 is for contacting a heat generating component, such as a central processing unit, to absorb heat generated by the heat generating component.

The heat pipe 40 has a "U" shape and includes a horizontal first rod 41 and two second rods 42. The first rod 41 is inserted into the base 20 and exposed at both ends. The two second rods 42 are vertically extended upward from the ends of the connecting rod 41, respectively. Each of the second rods 42 has a circular cross section.

The first fin set 60 includes a plurality of first fins 61 that are parallel to each other. A pair of through holes (not labeled) are respectively defined in the two second rods 42 corresponding to the heat pipes 40 at opposite ends of each of the first fins 61. Each of the second rods 42 passes through a corresponding through hole of each of the first fins 61 such that the first fins 61 of the first fin set 60 are serially disposed on the two second rods 42 of the heat pipe 40.

The two second fin sets 80 are rotatably mounted on the two second rods 42 of the heat pipe 40, respectively. Each of the second fin sets 80 includes a plurality of second fins 82 that are parallel to each other. A circular shaft hole (not labeled) through which the corresponding second rod 42 passes is formed at one end of each of the second fins 82. The second fins 82 of each of the second fin sets 80 are serially disposed on the corresponding second rods 42 through their shaft holes. The second fins 82 of each second fin set 80 are respectively located between two adjacent first fins 61 of the first fin set 60 such that the first fins 61 and the second fins 82 are interdigitated Set. The second fin set 80 is further provided with an operating portion 84 on the side edge of the second fin 82.

The operation portion 84 of each second fin group 80 is operated to drive the corresponding second fin group 80 to rotate with the corresponding second rod 42 of the heat pipe 40 as an axis. When packaging and transporting the heat sink 10 of the present invention, the two second fin sets 80 can be rotated and retracted into the first fin set 60 to reduce the volume of the heat sink 10 (as shown in Figures 1 and 2). When the heat sink 10 of the present invention is required to dissipate heat for the heat generating component, the two second fin sets 80 can be unscrewed from the first fin set 60 to enlarge the volume of the heat sink 10 (as shown in FIG. 3). .

In other embodiments, a second set of fins 80 can be omitted.

In other embodiments, the circular shaft hole of each second fin 82 can be changed to an elongated guide hole, and the cross section of each second rod 42 of the heat pipe 40 can be changed from a circular shape to a rectangular shape. In this way, each second fin group 80 can be slid relative to the corresponding second rod 42 under the guidance of its guiding hole, so that each second fin group 80 can slide in and out of the first fin. Slice group 60.

In summary, the second fin set 80 of the heat sink 10 of the present invention is movably mounted on the heat pipe 40 and can be moved from a first position to a second position. When the second fin set 80 is in the first position, the second fin set 80 is retracted to the first fin set 60, and the volume of the heat sink 10 can be reduced. When the second fin set 80 is in the second position, the second fin set 80 extends out of the first fin set 60, and the volume of the heat sink 10 can be enlarged.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by those skilled in the art in light of the spirit of the invention All should be covered by the following patent application.

10‧‧‧ radiator

20‧‧‧ Pedestal

40‧‧‧heat pipe

60‧‧‧First fin set

80‧‧‧second fin set

42‧‧‧second shot

61‧‧‧First fin

82‧‧‧second fin

84‧‧‧Operation Department

Claims (7)

A heat sink includes a base, a heat pipe connected to the base, and a first fin set mounted on the heat pipe, the first fin set including a plurality of first fins parallel to each other, and the improvement is The heat sink further includes at least one second fin set rotatably mounted on the heat pipe, the second fin set includes a plurality of second fins parallel to each other, and the mutually parallel second fins respectively receive Between any two adjacent first fins, rotating the second fin set may cause the second fins to be unscrewed from between the corresponding two adjacent first fins. The heat sink of claim 1, wherein the second fin set is provided with an operating portion, and the operating portion is operable to rotate the second fin set. The heat sink of claim 1, wherein the second heat sink has two second fin sets, the heat pipe includes a first rod connected to the base, and two of the first a second rod extending from the two ends of the rod, the first fin of the first fin group is disposed on the two second rods, and the second fins of the two second fin groups are respectively disposed on the two rods Two shots. A heat sink includes a base, a heat pipe connected to the base, and a first fin set mounted on the heat pipe, the first fin set including a plurality of first fins parallel to each other, the improvement The heat sink further includes a second fin set movably mounted on the heat pipe, the second fin set includes a plurality of second fins parallel to each other, and the mutually parallel second fins are respectively received in Between any two adjacent first fins, operating the second fin set may cause the second fin to be removed between the corresponding two adjacent first fins. The heat sink of claim 4, wherein the second fin set is rotatably mounted to the heat pipe. The heat sink of claim 4, wherein the second fin set is slidably mounted to the heat pipe. A heat sink includes a base, a heat pipe connected to the base, and a first fin set mounted on the heat pipe. The first fin set includes a plurality of first fins, and the improvement is: the heat dissipation The second fin set includes a second fin set, and the second fin set includes a plurality of second fins, and the first fins and the second fins are alternately overlapped with each other. The second fin set is movable from a first position to a second position, and when the second fin set is located at the first position, the second fin set is retracted to the first fin set, and the second fin is When the set of sheets is in the second position, the second set of fins protrudes from the first set of fins.