TWM569871U - Heat sink and heat dissipation device using same - Google Patents

Abstract

The heat sink comprises a heat pipe, a first fin set and a second fin set, the heat pipe comprises a pipe body, a capillary structure and a working fluid, and the heat pipe has a heating section, a heat releasing section and a second heat releasing section, the inside of the heated section has a heat receiving cavity, and the inside of the first heat releasing section and the second heat releasing section respectively have a heat releasing cavity, and the sectional area of the heat receiving cavity is larger than the section of each heat releasing cavity An area; the first fin set is sleeved in the first heat release section and in thermal contact; the second fin set is sleeved in the second heat release section and in thermal contact. Thereby, the vaporized working fluid can be acceleratedly flowed to the heat release chambers for heat exchange, thereby improving the conduction and heat dissipation performance.

Description

Radiator and heat sink using the same

The present invention relates to a heat sink technology, and more particularly to a heat sink and a heat sink using the same.

As the computing speed of electronic components continues to increase, the heat generated by them is becoming higher and higher. In order to effectively solve the problem of high heat generation, the heat pipe with good thermal conductivity has been widely used in the industry. The heat sink combined with the heat sink fin group has the advantages of light weight, good heat conduction and heat dissipation, and is an indispensable component of heat dissipation of electronic components.

However, the existing heat sink mainly comprises a heat pipe and a heat sink fin group, wherein the heat receiving section and the heat releasing section of the heat pipe are mostly arranged by the same pipe diameter, and the working fluid after the vaporization flows from the heat receiving end to the heat releasing end, only It can be conducted by the pressure difference caused by the temperature change of the working fluid, so that its thermal conductivity is subject to considerable restraint. Other heat pipes are only a configuration of a single heated section and a single heat release section, which will make the heat conductivity of the heat pipe ineffective.

In view of this, the creators of the present invention have made great efforts to solve the above problems by focusing on the above-mentioned prior art, and have made great efforts to solve the above problems, that is, the goal of the improvement of the novel creator.

An object of the present invention is to provide a heat sink and a heat dissipating device using the same, which are different in cross-sectional area of the heat receiving cavity and the heat releasing cavity, so that the vaporized working fluid can accelerate to the respective heat releasing capacities. The cavity exchanges heat, thereby improving the conduction and heat dissipation performance of the heat sink.

In order to achieve the above object, the present invention provides a heat sink including a heat pipe, a first fin set and a second fin set, the heat pipe including a pipe body and a capillary structure disposed in the pipe body and a working a heat pipe having a heat receiving portion and a first heat releasing portion and a second heat releasing portion extending from both ends of the heat receiving portion, the heat receiving portion having a heat receiving chamber, the first heat releasing portion and the heat radiating portion The inside of the second heat-dissipating section has a heat-dissipating cavity, the cross-sectional area of the heat-receiving cavity is larger than the cross-sectional area of each of the heat-dissipating cavity; the first fin set is sleeved in the first heat-dissipating section and is in thermal contact; The second fin set is sleeved in the second heat release section and is in thermal contact.

In order to achieve the above object, the present invention provides a heat dissipating device including a heat conducting seat and a heat sink, the heat sink including a heat pipe, a first fin set and a second fin set, the heat pipe including a tube body and a capillary structure and a working fluid disposed in the tube body, and the heat pipe has a heat receiving section and a first heat releasing section and a second heat releasing section respectively extending from both ends of the heat receiving section, wherein the heat receiving section is disposed at The heat-conducting seat has a heat-receiving cavity inside, and the inside of the first heat-dissipating section and the second heat-dissipating section respectively have a heat-dissipating cavity, and the heat-receiving cavity has a sectional area larger than each of the heat-dissipating capacities a cross-sectional area of the cavity; the first fin set is sleeved in the first heat release section and in thermal contact; the second fin set is sleeved in the second heat release section and is in thermal contact.

The present invention also has the following effects: the groove width of each of the first grooves is larger than the groove width of each of the second grooves, so that the liquefied working fluid can quickly flow back to the heated section. By using the flat side of the heated section and the heat releasing section, the thermal contact area with the heat conducting seat and each fin group can be increased to improve the heat conduction performance. borrow The capillary structure composed of the first groove and each of the second grooves can be formed into a unequal groove width only by shrinking each heat-dissipating portion during production, and the production process can be greatly simplified.

1‧‧‧heatsink

10, 10A, 10B, 10C‧‧‧ heat pipe

11‧‧‧Body

111‧‧‧heating section

1111‧‧‧heated cavity

1112‧‧‧ Straight side

1113‧‧‧ semi-circular edge

112‧‧‧First heat release section

1121, 1131‧‧ ‧ exothermic cavity

1122‧‧‧ Straight side

1123‧‧‧Half arc edge

113‧‧‧Separate heat release section

114, 114A‧‧‧ adiabatic section

121‧‧‧first trench

122‧‧‧Second trough

13‧‧‧Working fluid

20‧‧‧First fin set

21‧‧‧ Heat sink fins

22‧‧‧ Groove

30‧‧‧second fin set

31‧‧‧ Heat sink fins

32‧‧‧ Groove

5, 5A‧‧ ‧ heat conduction seat

51‧‧‧heat block

511‧‧‧ channel

52‧‧‧ fixed board

Figure 1 is a combined appearance of the novel heat sink.

2 is an exploded perspective view of the novel heat sink.

Fig. 3 is an external view of the heat pipe of the present invention.

Figure 4 is a cross-sectional view of the heat receiving section of the heat pipe of the present invention.

Figure 5 is a cross-sectional view of the heat release section of the heat pipe of the present invention.

Fig. 6 is an external view of another embodiment of the heat pipe of the present invention.

Figure 7 is a combined view of the heat sink of the present invention.

Figure 8 is a combined appearance view of another embodiment of the heat sink of the present invention.

Figure 9 is a partial cross-sectional view of Figure 8.

The detailed description and technical content of the present invention are set forth below with reference to the accompanying drawings.

Referring to FIG. 1 to FIG. 5 , the present invention provides a heat sink. The heat sink 1 mainly includes a heat pipe 10 , a first fin set 20 , and a second fin set 30 .

The heat pipe 10 includes a pipe body 11 and a capillary structure disposed in the pipe body 11 and a working fluid 13. The heat pipe 10 has a heat receiving section 111 and a first heat releasing section 112 extending from both ends of the heat receiving section 111, respectively. a second heat releasing section 113, the inside of the heated section 111 has a heat receiving cavity 1111, first The heat dissipation section 112 and the second heat dissipation section 113 respectively have a heat releasing cavity 1121, 1131, and the heat receiving cavity 1111 has a sectional area larger than that of each of the heat releasing pockets 1121, 1131; in other words, the tube of the heat receiving section 111. The diameter size is larger than the diameter of the first heat release section 112 and the second heat release section 113.

The section of the heated section 111 mainly comprises a straight side 1112 and a half arc edge 1113 extending from both ends of the straight side 1112. The capillary structure comprises a plurality of first grooves 121 and a plurality of second grooves. 122 (shown in FIGS. 4 and 5), each of the first grooves 121 is formed on the inner side of the straight side 1112 and the semi-circular side 1113.

The first heat release section 112 is a flat shape, and the cross section thereof mainly comprises a pair of straight sides 1122 and a pair of semi-circular arc sides 1123 extending from opposite ends of each flat side 1122, wherein each of the second slots 122 The inner wall of each of the straight sides 1122 and the semi-circular arc sides 1123 is formed; and the groove width of each of the first grooves 121 of the heat receiving section 111 is larger than the groove width of each of the second grooves 122 of the first heat releasing section 112. Similarly, the shape and internal structure of the second heat release section 113 are the same as those of the first heat release section 112.

Further, the heat pipe 10 further includes a heat insulating section 114, which is between the heat receiving section 111 and the first heat releasing section 112. Similarly, the heat insulating section 114 may also be between the heat receiving section 111 and the second heat releasing section 113. A heat insulating section 114 is formed between the heat receiving section 111 and the first heat releasing section 112 and the second heat releasing section 113, and the sectional shape of the heat insulating section 114 of the embodiment is a flat shape.

The first fin group 20 is formed by stacking a plurality of heat dissipation fins 21, and a corresponding groove 22 is formed on each side of each of the heat dissipation fins 21, and the first fin group 20 is provided with a groove 22 It is connected to the first heat release section 112 and reaches a thermal contact.

The second fin group 30 is also formed by stacking a plurality of heat dissipating fins 31. A corresponding groove 32 is formed on each side of each of the heat dissipating fins 31. The second fin group 30 is a recess 32. The sleeve is sleeved in the second heat release section 113 and thermal contact is achieved.

Referring to FIG. 6, the heat pipe 10A of the present embodiment is different from the heat pipe 10 of the foregoing embodiment in that the cross-sectional shape of each of the heat insulating segments 114A may be a circular shape.

Referring to FIG. 7 , the present invention further provides a heat dissipating device, which mainly includes a heat conducting base 5 and a heat sink 1 . The heat sink 1 of the embodiment includes a plurality of heat pipes 10B , a first fin set 20 and a first The two fin sets 30, wherein the characteristics of each of the heat pipes 10B, the first fin set 20 and the second fin set 30 are similar to those of the foregoing embodiments, and therefore are not repeated one by one, wherein the heat conducting seat 5 is an average temperature. The heat-receiving section 111 of each heat pipe 10B is flatly attached to the heat-conducting seat 5 by its flat side 1112. The first heat-dissipating section 112 of each heat pipe 10B is connected to the first fin set 20 and is in thermal contact; the first heat pipe 10B The second exothermic section 113 is then passed through the second fin set 30 and is in thermal contact.

As shown in FIG. 8 and FIG. 9 , the thermal conductive seat 5A of the present embodiment mainly includes a heat conducting block 51 and a fixing plate 52 . The heat conducting block 51 can be made of copper, aluminum or an alloy thereof, and is formed in the heat conducting block 51 . There are a plurality of channels 511, and each of the channels 511 is semi-circular. The heat-receiving section 111 of each heat pipe 10C has a circular shape, and each heat-receiving section 111 is disposed corresponding to each channel 511 and is coupled through the fixing plate 52. .

In summary, the heat sink of the present invention and the heat dissipating device using the same can achieve the intended purpose of use, and solve the lack of conventional knowledge, and because of the novelty and progress, fully comply with the requirements of the new patent application. If you apply for an application under the Patent Law, please check and grant the patent in this case to protect the rights of the new creator.

Claims (14)

A heat sink comprising: a heat pipe comprising a pipe body and a capillary structure disposed in the pipe body and a working fluid, the heat pipe having a heat receiving section and a first heat release extending from the two ends of the heat receiving section And a second heat releasing section, the heat receiving section has a heat receiving cavity inside, and the first heat releasing section and the second heat releasing section respectively have a heat releasing cavity, and the heat receiving cavity has a sectional area larger than each a cross-sectional area of the exothermic cavity; a first set of fins sleeved in the first exothermic section and in thermal contact; and a second set of fins sleeved in the second exothermic section and in thermal contact. The heat sink of claim 1, wherein a diameter of the heat receiving section is larger than a diameter of the first heat releasing section and the second heat releasing section. The heat sink of claim 1, wherein the capillary structure comprises a plurality of first grooves and a plurality of second grooves, each of the first grooves being formed inside the heated portion, wherein each of the second grooves is formed respectively The inside of the first heat release section and the second heat release section, and the groove width of the first groove is larger than the groove width of the second groove. The heat sink of claim 1, wherein the section of the heated section comprises a straight side and a half arc edge extending from both ends of the straight side. The heat sink of claim 1, wherein the heated section has a circular cross section. The heat sink according to claim 1, wherein the cross section of the first heat releasing section comprises a pair of straight sides and a pair of semicircular arc edges extending from both ends of the straight sides to form a flat shape. The heat sink according to claim 1, wherein the heat pipe further comprises two heat insulating segments, wherein one of the heat insulating segments is between the heat receiving segment and the first heat releasing segment, and the other heat insulating segment is between the heat receiving segments. Between the segment and the second exothermic segment. The heat sink according to claim 7, wherein the heat insulating section has a flat shape or a circular shape. The heat sink of claim 1, wherein the first fin group is stacked and assembled by a plurality of heat dissipating fins, and each of the heat dissipating fins is respectively provided with a corresponding groove, wherein the first fin group is respectively The groove is sleeved in the first heat release section. The heat sink of claim 1, wherein the second fin set is stacked by a plurality of heat dissipating fins, and each of the heat dissipating fins is respectively provided with a corresponding groove, and the second fin group is respectively The groove is sleeved in the second heat release section. A heat dissipating device comprising: a heat conducting seat; and a heat sink according to any one of claims 1 to 10, wherein the heated portion is disposed on the heat conducting seat. The heat sink of claim 11, wherein the heat conducting seat is a temperature equalizing plate. The heat sink of claim 11, wherein the heat pipe of the heat sink is plural. The heat dissipating device of claim 13 , wherein the heat conducting block comprises a heat conducting block and a fixing plate, the heat conducting block is provided with a plurality of channels for receiving the heat pipes, and the fixing plate and the heat conducting block jointly hold each The heat pipe.