TWI567359B - Thermal module assembling structure - Google Patents

Description

Thermal module combination structure

The invention relates to a heat dissipating module assembly structure, in particular to a combined structure in which a heat dissipating plate and a heat pipe are deformed to cause mutual clamping.

For example, the new patent of the Republic of China Patent Application No. 100215180 discloses a heat dissipating bottom plate structure for embedding a heat pipe. After the heat pipe is placed in the heat dissipating bottom plate structure and the heat pipe is riveted by the mechanical riveting processing method, the surface of the heat dissipating bottom plate structure remains. Plane features. The heat dissipating bottom plate comprises: a receiving groove formed in the heat dissipating bottom plate structure for accommodating the heat pipe; the two convex ribs are respectively formed on two sides of the receiving groove, and the two convex ribs are higher than the surface of the heat dissipating bottom plate structure; The escape troughs are formed in the heat dissipation bottom plate structure, respectively adjacent to and located outside the ribs, whereby the ribs are fastened to the heat pipes when the heat pipes are buried for mechanical riveting, and the escape grooves are accommodated The ribs are super-metal generated after the mechanical riveting process, so that the surface of the heat-dissipating floor structure can maintain the planar characteristics.

However, the above-mentioned conventional purpose is to improve the heat pipe from the groove of the bottom plate, but the above-mentioned conventional use is because the rib and the groove are only surrounded by the radial surface of the heat pipe, so the heat pipe will still It is taken out of the groove or drawn out along the longitudinal direction of the groove (that is, the axial direction of the heat pipe).

In view of the above problems, the main object of the present invention is to provide a local deformation of two ribs on the upper side of the accommodating groove of the heat dissipation plate and a corresponding surface of the heat pipe in the accommodating groove, by the locality The deformation forms at least one modified joint to tightly bond the heat pipe with the two ribs.

The main object of the present invention is to provide a modified joint on a joint surface between two ribs and a heat pipe substantially perpendicular to an axial direction of the heat pipe to generate an interference force to the heat pipe to prevent the heat pipe from along the accommodating groove. Prolonged in the longitudinal direction.

In order to achieve the above object, the present invention provides a heat dissipating module assembly structure, including: a heat dissipating plate, including a receiving groove formed in the heat dissipating plate for providing a heat pipe through the receiving portion, above the receiving groove The two sides are respectively formed with ribs extending horizontally in the middle direction of the accommodating recesses, and the two ribs respectively have an upper surface and a lower surface, and the upper surface is provided with at least one modified groove facing a surface of the heat pipe The deforming groove deforms between the lower surface of the two ribs and the surface of the heat pipe to form at least one modified joint.

In one implementation the modified joint is substantially perpendicular to an axial direction of the heat pipe.

In one implementation, the modified joint includes a modified bump and a modified concave formed on a lower surface of the convex rib, the modified concave being formed on a surface of the heat pipe.

In an implementation, the modified bump and the modified recess are clamped tightly.

With the above structure, the present invention can surely prevent the heat pipe from coming out along the longitudinal direction of the accommodating groove.

10‧‧‧heating plate

11‧‧‧ accommodating grooves

12‧‧‧ ribs

121‧‧‧ upper surface

122‧‧‧ lower surface

123, 123a~123e‧‧‧Transformation slot

13‧‧‧ surface

20‧‧‧heat pipe

21‧‧‧ surface

30‧‧‧Transformation Joint

31‧‧‧Modified bumps

32‧‧‧Transformation pits

The following drawings are intended to provide a more complete understanding of the invention, and are described in detail herein. The specific embodiments of the present invention are described in detail by reference to the specific embodiments herein,

1 is a schematic exploded view of a heat sink and a heat pipe; FIG. 2A is a schematic diagram of a combination of a heat sink and a heat pipe; FIG. 2B is a schematic view of a deformed groove formed by two ribs; and FIG. 2C is a 2C of FIG. 2B. 2C is a schematic diagram of the 2C diagram; FIG. 3A is a schematic diagram of the second implementation of the modification tank; FIG. 3B is a schematic diagram of the third implementation of the modification tank; It is a schematic diagram of the fourth implementation of the modification tank; the 3D diagram is a schematic diagram of the fifth implementation of the modification tank; and the 3E diagram is a schematic diagram of the sixth implementation of the modification tank.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following, preferred embodiments of the invention will be described with reference to the accompanying drawings, in which

1 is a schematic exploded view of a heat sink and a heat pipe; FIG. 2A is a schematic diagram of a combination of a heat sink and a heat pipe; FIG. 2B is a schematic view of a modified groove formed by two convex ribs; 2B-2C is a schematic diagram of the 2C-2C section; the 2D diagram is an enlarged schematic diagram of the 2C diagram.

As shown in FIGS. 1 and 2A, the heat dissipation module assembly structure includes a heat dissipation plate 10 and a heat pipe 20, and the heat dissipation plate 10 includes a receiving groove 11 formed in the heat dissipation plate 10, and the heat pipe 20 is penetrated through the The receiving groove 11 is tightly coupled with the heat sink 10. The heat sink 10 is made of a metal or alloy having good thermal conductivity, such as copper, aluminum, gold or silver. The heat pipe 20 may be a whole penetration or only one end penetrated (as shown in FIG. 2A), and the cross section includes a flat heat pipe or a circular heat pipe or a semicircular heat pipe, and the shape may be a straight heat pipe or a curved shape. Heat pipe.

The heat pipe 20 is basically a closed cavity containing a working fluid, the liquid-vapor two-phase change of the working fluid continuously circulating in the cavity, and the convection of the vapor-liquid fluid to the liquid return between the heat absorbing end and the heat releasing end, so that the convection The surface of the cavity exhibits a rapid average temperature characteristic for heat transfer purposes. The action mechanism is that the liquid phase working fluid evaporates into a vapor phase at the endothermic end, and this moment generates a local high pressure in the cavity, driving the vapor phase working fluid to flow to the heat release end at a high speed, and the vapor phase working fluid is condensed into a liquid phase at the heat release end, The capillary structure in the cavity generates gravity/capillary force/centrifugal force, etc., and returns to the endothermic end to circulate. Therefore, when the heat pipe is actuated, the air flow is driven by the pressure difference of the air pressure, and the liquid flow must be driven or used according to the state of use, and a suitable return drive force is adopted or designed. The heat pipe must form a closed cavity by the pipe structure, and the pipe body must have a structural function to withstand the pressure difference between the inside and the outside, and also a medium material for heat transfer into and out of the cavity. At present, the small heat pipes used in the electronic heat dissipation industry are mostly made of copper, and aluminum tubes or titanium tubes are used for weight or cost considerations.

A rib 12 is formed on each of the upper sides of the accommodating recess 11 , and the ribs 12 are horizontally protruded along a surface 13 of the heat dissipation plate 10 toward the middle of the accommodating recess 11 . The two ribs 12 have an upper surface 121 and a lower surface 122. The upper surface 121 is at the same horizontal position as the surface 13 of the heat dissipation plate 10, and the lower surface 122 faces the heat pipe 20 penetrating through the accommodating recess 11. A surface 21. As shown in FIGS. 2B, 2C, and 2D, at least one modified groove 123 is formed on the upper surface 121 of the two ribs 12 by machining (stamping or rolling or riveting), and the lower surface 122 of the two ribs 12 and the The surface 21 (not shown) of the heat pipe 20 in contact with the lower surface 122 is deformed so that the rib is formed At least one modified joint 30 is formed between the lower surface 122 of the 12 opposite the surface 21 of the heat pipe 20. In the preferred embodiment, a plurality of modified grooves 123 are spaced along the longitudinal direction of the rib 12, and the modified grooves 123 deform the lower surface 122 of the two ribs 12 and the surface 21 of the heat pipe 20 to form a complex deformation combination. The portion 30 corresponds between the lower surface 122 of the two ribs 12 and the surface 21 of the heat pipe 20 and is substantially perpendicular to an axial direction of the heat pipe 20 (as in Figures 2C and 2D).

Although the foregoing description indicates that the modified grooves 123 are spaced apart along the longitudinal direction of the rib 12 (as shown in FIG. 2B), the present invention is not limited thereto, and may be provided as a line or a continuous segment or a segment. Demand setting, etc., in an embodiment such as FIG. 3A, the deformation grooves 123a are provided at the leading edge and the trailing edge of the rib 12; or as shown in FIG. 3B, the deformation grooves 123b are disposed at the rib The intermediate section of 12; or the deformation groove 123c is disposed in the front and rear sections of the rib 12 as shown in FIG. 3C; or the deformation groove 123d is a segmented strip as shown in FIG. 3D; The deformation grooves 123e are elongated as shown in Fig. 3E.

In particular, as shown in FIGS. 2B, 2C, and 2D, a plurality of spaced-apart and localized modified joints 30 are formed in the longitudinal direction of the corresponding faces of the two ribs 12 and the heat pipe 20 (eg, 2C). And 2D drawings, wherein each of the modified bonding portions 30 includes a modified bump 31 and a modified concave portion 32 formed on the lower surface 122 of the convex rib 12, and the modified concave portion 32 is formed therein. The surface 21 of the heat pipe 20 is clamped and tightly coupled by the modified bump 31 and the modified recess 32 so that the surface 21 of the heat pipe 20 in the accommodating recess 11 of the heat dissipation plate 10 is interfered by the force of interference. The axial direction of the heat pipe 20 is perpendicular to the heat pipe 20, so that the heat pipe 20 is prevented from coming out or escaping along the longitudinal direction of the accommodating groove 11 (parallel to the axial direction of the heat pipe 20).

In summary, the present invention provides a local (or continuous) deformation on the corresponding surface between the two ribs 12 and the heat pipe 20 on both sides of the receiving groove 11 of the heat dissipation plate 10, by the locality. Forming at least one modified joint 30 to tightly couple the heat pipe 20 and the two ribs 12, and the deformation joint 30 is substantially perpendicular to an axial direction of the heat pipe 20 to generate an interference force to the heat pipe 20. The heat pipe 20 is prevented from coming out along the longitudinal direction of the accommodating recess 11 (parallel to the axial direction of the heat pipe 20).

While the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and the scope of the present invention can be varied and modified without departing from the spirit and scope of the invention. The scope of the patent application is subject to the provisions of the attached patent application.

10‧‧‧heating plate

12‧‧‧ ribs

121‧‧‧ upper surface

122‧‧‧ lower surface

123‧‧‧Transformation slot

13‧‧‧ surface

20‧‧‧heat pipe

21‧‧‧ surface

30‧‧‧Transformation Joint

Claims (8)

A heat dissipating module assembly structure includes: a heat dissipating plate, wherein a receiving groove is formed in the heat dissipating plate for providing a heat pipe through the receiving portion, and the upper sides of the receiving groove are respectively formed to be received a rib protruding horizontally in a middle direction of the groove, the two ribs respectively having an upper surface and a lower surface, the lower surface facing a surface of the heat pipe, the upper surface forming at least one modified groove to the lower surface of the two ribs And deforming the surface of the heat pipe to form at least one modified joint between the lower surface of the two ribs facing the surface of the heat pipe. The heat dissipation module assembly structure of claim 1, wherein the modified combination portion is substantially perpendicular to an axial direction of the heat pipe. The heat dissipation module assembly structure of claim 2, wherein the modified coupling portion comprises a modified bump and a modified concave portion, the modified bump is formed on a lower surface of the convex rib, and the modified concave portion is formed in the heat dissipation module The surface of the heat pipe. The heat dissipation module assembly structure of claim 3, wherein the modified bump and the modified concave system are tightly coupled. A heat dissipating module assembly structure includes a heat dissipating plate having a receiving groove for receiving a heat pipe, and a plurality of horizontally extending ribs on the upper sides of the receiving groove respectively for restricting the heat pipe in the receiving groove; The ribs respectively have an upper surface and a lower surface, and the upper surface forms at least one modified groove to deform the lower surface of the two ribs and the surface of the heat pipe to form at least one modified joint portion. The lower surface of the two ribs face each other to form a mutual clamping between the surfaces of the heat pipes to prevent the heat pipes from being detached from the accommodating grooves. The heat dissipation module assembly structure of claim 5, wherein the heat pipe defines a longitudinal direction, and the modified combination portion is substantially perpendicular to a longitudinal direction of the heat pipe. The heat dissipation module assembly according to claim 5, wherein the modified coupling portion includes a modified bump and a modified concave portion, the modified bump is formed on the lower surface of the convex rib, and the modified concave portion is formed in the heat dissipation module The surface of the heat pipe. The heat dissipation module assembly structure of claim 7, wherein the modified bump and the modified concave system are tightly coupled.