Heat dissipating module

(a) Field of the Invention

The present invention relates to a heat dissipating module having heat dissipating tubes and a seat. More particularly, it relates to such a heat dissipating module without using tin glue or other welding agents for combining the heat dissipating tubes and the seat. Thus higher heat dissipating efficiency between the heat dissipating tubes and the seat can be achieved.

(b) Description of the Prior Art

Referring to FIG. 13 , a conventional heat dissipating module includes a plurality of fins (made of a metal such as aluminum or copper), a plurality of heat dissipating tubes 20 (both ends of which are sealed with working liquid contained therein) and a seat 30 (made of a metal such as copper, thus also called a copper seat). The heat dissipating fins are stacked one next to another. The heat dissipating tubes pass through the fins and the heat dissipating tubes are welded to the seat by tin glue or other selected welding agents. If the heat dissipating tubes 20 and the seat 30 are made of different materials, nickel needs to be electroplated thereto. Therefore, the whole assembly work is complex and the cost high, while the yield ratio is low. Moreover, the heat dissipating efficiency between the heat dissipating tubes 20 and seat 30 is low.

In use, the prior art heat dissipating module is enclosed by a fan locking frame for locking a frame.

It is an objective of the present invention to provide a heat dissipating module, which, when compared with the prior art module, can be more easily assembled at a higher yield ratio and can result in a higher heat dissipating efficiency. To achieve this objective, the present invention provides a heat dissipating module comprising a plurality of fins having same or different shapes, a plurality of heat dissipating tubes, and a seat made of solid metal. The plurality of fins are stacked one next to another; each fin has a plurality of upper penetrating holes; the upper penetrating holes of the fins are aligned to form a plurality of through holes; and a lower side of each fin has a plurality of trenches. The plurality of heat dissipating tubes are sealed at both ends with working liquid filled in the tubes. One end surface of the seat is formed with a plurality of slots corresponding to the trenches of the fins; two upper sides of each slot are extended with two shaping sheets, which can be pressed and bent to form a round hole with the slot. The lower legs of the plurality of heat dissipating tubes can be embedded in the slots of the seat and then the two shaping sheets are pressed and bent to tightly fold around the lower legs of the heat dissipating tubes. The lower legs of the heat dissipating tube pass through the upper penetrating holes and the upper legs of the heat dissipating tube pass through the trenches so that the fins are tightly pressed to the seat. Thereby heat can be transferred through the seat, the heat dissipating tubes and the fins to be dissipated. Thus a heat dissipating module is formed.

Another object of the present invention is to provide a heat dissipating module, wherein the fins can be divided into four sections which are arranged one next to another. The fins in a first section has upper penetrating holes and lower semi-circular grooves. The fins in a second section has upper penetrating holes and lower penetrating holes. The fins in a third section are identical to the fins in the first section. The fins in the fourth section are short and thus have only upper penetrating holes. Since the fins in the second section have upper penetrating holes and lower penetrating holes, the heat dissipating tubes can pass through the fins. The heat dissipating tubes press on the first and third sections so that all the heat dissipating fins are tightly engaged with the seat. Thereby heat can be transferred through the seat, heat dissipating tubes and the fins (and optionally an external heat dissipating fan) so as to achieve improved heat dissipating effect.

Moreover, the trenches of the plurality of fins can be semi-cambered grooves, semi-elliptical grooves, or flat notches. The slots of the seat can be semi-cambered slots, semi-elliptical slots, or flat notches.

FIG. 1 is an assembled perspective view of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the embodiment shown in FIG. 1 .

FIG. 3 is an assembled schematic view showing the assembly of the heat dissipating tubes and the seat of the present invention.

FIG. 4 is another assembled schematic view showing the assembly of the heat dissipating tubes and the seat of the present invention.

FIG. 5 is yet another assembled schematic view about the assembly of the heat dissipating tubes and the seat of the present invention.

FIG. 6 is an exploded perspective view showing a heat dissipating module of the present invention enclosed with a fan locking frame.

FIG. 7 is an assembled perspective view of FIG. 6 .

FIG. 8 is a lateral view of a heat dissipating module of the present invention.

FIG. 9 is an exploded perspective view of another embodiment of the present invention, wherein the heat dissipating tubes are formed with flat surfaces.

FIG. 10 is a cross sectional view showing the assembly of the heat dissipating tubes and the seat of the embodiment shown in FIG. 9 .

FIG. 11 is an exploded perspective view of yet another embodiment of the present invention, wherein the heat dissipating tubes are elliptical tubes.

FIG. 12 is a cross sectional view showing the assembly of the heat dissipating tubes and the seat of the embodiment shown in FIG. 11 .

FIG. 13 is an exploded view of the prior art heat dissipating tubes and seat before assembly.

In order that those skilled in the art can further understand the present invention, a detailed description of the preferred embodiments will be provided in the following. The description and the appended drawings is provided only to enable those skilled in the art to understand the objects, features, and characteristics of the present invention, but not to be used to confine the scope and spirit of the present invention defined in the appended claims.

Referring to FIGS. 1 and 2 , the heat dissipating module of the present invention has the following elements: a plurality of fins 1 having same or different shapes; a plurality of heat dissipating tubes 2 ; and a seat 3 made of solid metal (such as copper).

The fins 1 are stacked one next to another. Each fin 1 has a plurality of upper penetrating holes 11 . The upper penetrating holes 11 of the fins 1 are aligned to form a plurality of through holes across the fins. Each of the fin 1 (except those in a last section) has at its lower side a plurality of lower penetrating holes 12 or a plurality of lower semi-circular grooves 13 .

Each of the plurality of heat dissipating tubes 2 is formed with a curved section and two legs (a lower leg 21 and an upper leg) and is sealed at both ends with working liquid filled in the tubes.

One end surface of the seat 3 is formed with a plurality of slots 31 (such as semi-circular slots 31 ) corresponding to the lower penetrating holes 12 or the lower semi-circular grooves 13 of the fins 1 . Two upper sides of each slot 31 are extended in the form of two shaping sheets 311 . As the two shaping sheets 311 are pressed and bent, they form a round hole with the slot 31 . The diameter of the round hole is equal to that of the heat dissipating tube 2 .

Further, the lower legs of the plurality of heat dissipating tubes 2 can be embedded in the semi-circular slots 31 of the seat 3 and then the two shaping sheets 311 at two ends of the semi-circular slots 31 are pressed and bent to tightly fold around the lower legs of the heat dissipating tubes 2 . The lower legs 21 of the heat dissipating tubes 2 pass through the upper penetrating holes 11 and the upper legs of the heat dissipating tubes 2 pass through the lower penetrating holes 12 or the lower semi-circular grooves 13 so that the fins 1 are tightly attached to the seat 3 . Thereby heat can be transferred through the seat 3 , heat dissipating tubes 2 and the fins 1 (and optionally an external heat dissipating fan) to be dissipated. Thus a heat dissipating module is formed. No welding process is used in assembling the seat 3 and the heat dissipating tube 2 . The assembly is quick and can be performed without welding glue or adhesive. Thus the heat dissipating efficiency of the module is enhanced.

The combination of the two sheets 311 for the heat dissipating tubes 2 and the seat 3 is done with a flat surface (referring to FIG. 3 ). The two sheets 311 are bent to form a round hole with diameter corresponding to that of the heat dissipating tubes 2 . See FIG. 4 , the combination of the two can also be done with a stepped structure, or as illustrated in FIG. 5 , with two inclined surfaces.

Referring to FIGS. 6 and 7 , the periphery of the heat dissipating fins 1 can be installed within a fan locking frame for locking a fan. The fan locking frame is formed with two semi-frames 41 . Each semi-frame has a lower support 411 for fixing to one of connection portions 32 respectively disposed at two sides of the seat 3 . Each of the four corners of the locking frame has a respective locking hole 412 .

Moreover, as illustrated in the drawings, the fins 1 can be divided into four sections (referring to FIGS. 2 and 8 ). The fins 1 in a first section has upper penetrating holes 11 and lower semi-circular grooves 13 . The fins 1 in a second section have upper penetrating holes 111 and lower penetrating holes 12 . The fins 1 in a third section are identical to the fins 1 in the first section. The fins 1 in the fourth section are short and thus have only upper penetrating holes 11 . Since the second section has the upper penetrating holes 11 and lower penetrating holes 12 , the heat dissipating tubes 2 can pass through the fins. The heat dissipating tubes press on the first and third sections (which have no lower penetrating hole) so that all the heat dissipating fins (except those in the fourth section) are tightly engaged with the seat 3 . Thereby heat can be transferred through the seat 3 , the heat dissipating tubes 2 and the fins 1 (and optionally an external heat dissipating fans), resulting in improved heat dissipating effect.

In the embodiment described above, the heat dissipating tubes are round tubes. Therefore the slots 31 and grooves 13 are semi-circular. After the two shaping sheets 311 are pressed and bent, they tightly fold around round tubes for clamping the heat dissipating tubes 2 .

Similarly, as illustrated in FIGS. 9 and 10 , to tightly enclose the heat dissipating tubes 2 in order to achieve improved heat dissipating effect, the tube body of each heat dissipating tube 2 can be formed with a flat lower leg 21 a and the seat 3 can be formed with corresponding flat slots 31 a . The fins 1 are formed with corresponding flat notches 13 a and flat lower penetrating holes 12 a . The shaping sheets 311 can be pressed and bent to tightly fold around the flat lower leg 21 a so that the heat dissipating tube 2 is tightly enclosed by the seat 3 . The notch 13 a of the fin 1 is therefore in close contact with the flat lower leg 21 a of the heat dissipating tube 2 .

Similarly, as illustrated in FIGS. 11 and 12 , the tube body of the heat dissipating tube 2 can be formed with an elliptical lower leg 21 b . The seat 3 is formed with corresponding semi-elliptical slots 31 b and the fins 1 are formed with a plurality of semi-elliptical notches 13 b and elliptical lower penetrating holes 12 b . The shaping sheets 311 can be pressed and bent to tightly fold around the elliptical lower leg 21 b so that the heat dissipating tube 2 is tightly enclosed by the seat 3 . The notch 13 b of the fin 1 therefore in close contact with the elliptical lower leg 21 b of the heat dissipating tubes 2 to achieve improved heat dissipating effect.

The preferred embodiments of the present invention have been described above; however, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be equivalent to one skilled in the art are intended to be covered within the scope of the following claims.