DE102004023037A1 - Ribbed heat sink structure for cooling computer etc., has heat conducting medium in passages in baseplate, and radiating fins - Google Patents

Abstract

Radiating ribs (11) are arranged on a baseplate (10) within which passages (102) are formed having capillaries (12) that are preferably formed by extrusion. A round tube (120) is arranged in the center for forming a closed circuit of two-layer passages. The passages are evacuated and filled with a heat conducting medium. The baseplate has a heat absorbing end for transferring heat to the radiating ribs. The heat is preferably distributed by a fan.

Description

Field of invention

The The present invention relates to a rib heat sink structure, which is adapted for PCs or notebook computers, projectors or plasma televisions and corresponding peripherals of which can be used.

background the invention

nowadays Computer applications in various forms are almost in every area of the daily used for human needs. Because of the processing speed the computer is constantly increasing The heat that the computers give off is also increased. The Real-time heat distribution has become a task that satisfied solved solved must be in order to allow normal use of the computer. The heat sink for the known PCs or notebook computers usually include a base plate with a variety of cooling fins, which are arranged in an upright position on them. The lower side of the Base plate is designed as a smooth surface. For installation becomes the radiator with the heat-generating element of the computer by an eccentric Clip attached to the bottom flat surface with the heat-generating To connect the element tightly. A fan is located above the cooling fins. As soon as The computer takes up its function according to the heat transfer principles the heat generated by the computer element over the flat contact surface the radiator transferred to the base plate and the radiator fins, being the fan generates a flow of air to remove the heat. A Such heat distribution method is based on the known metal heat conductivity. The heat dissipation and its efficiency depends on the heat conductivity of the material that is the radiator forms. Because a solid substance has limited heat transfer ability has the derivative effect of conventional coolers or Radiators also limited.

Summary the invention

In Considering the aforementioned disadvantages caused by the conventional cooler arise, which has a limited heat dissipation ability The present invention aims to provide a rib heat sink structure to provide the heat dissipation effect to improve. The rib heat sink structure according to the present The invention comprises a base plate and cooling fins integrated by Extrusion, pressing, forging or by welding are formed. The base plate has passages that are mechanically processed or caused by tensioning technology. The passages take capillary Means that are integrally formed to a double-layered Passage cycle to arise. After these are vacuum-sealed, is the circuit with a heat distribution medium (gaseous or liquid) in an amount of 50% to 90% of the internal volume capacity of the passages refilled. This allows the heat to be concentrated on the heat absorption end which is formed on the base plate, and can by the cooling fins can be routed and then distributed by the fan to one Heat dissipation effect to achieve.

in the Comparison to conventional cooling systems the invention may have a number of advantages, in particular: The base plate has at its lower end the cooling fins a cycle, the consists of two-ply passages that have capillary means, which are integrally formed by an extrusion, wherein additionally a heat dissipating medium is filled in the circulation. The heat-dissipating medium may be different from the liquid Phase into the gaseous Phase and back in the liquid Transform phase. And while This cyclic phase transformation can be the heat-distributing Medium absorb the heat and give off the heat, as well as the heat record again. The contact surface of the Base plate of the radiation fins can be the working heat of the computer elements absorb and release the heat to the radiating ribs again. Thus, the conventional heat dissipation method, which is essentially based on the metallic heat conduction, changed. This becomes the heat dissipation ability the cooling fins improves and the heat dissipation efficiency of the cooling fins increased.

The The foregoing and other objects, features and advantages of the present invention Invention are essentially detailed by the following Description is made in the attached drawings Refers.

Short description the drawings

1 Fig. 10 is an exploded view of the first embodiment of the present invention;

1a is a sectional view of 1 ;

2 is a schematic view of a circulating heat dissipation of the heat-dissipating medium according to 1 ;

3 Fig. 10 is a schematic view of circulating heat dissipation of the heat dissipating medium according to a second embodiment of the present invention;

4 Fig. 10 is an exploded view of a third embodiment of the present invention;

5 Fig. 11 is an exploded view of a fourth embodiment of the present invention;

6 Fig. 12 is a schematic view of circulating heat dissipation of the heat dissipating medium according to a fifth embodiment of the present invention;

7 Fig. 12 is a schematic view of heat dissipation of the heat dissipating medium according to a sixth embodiment of the present invention;

8th Fig. 10 is a schematic view of circulating heat dissipation of the circulating heat dissipating medium according to a seventh embodiment of the present invention;

9 Fig. 10 is a schematic view of an eighth embodiment of the present invention which serially connects a plurality of radiators;

10 Fig. 10 is a schematic view of circulating heat dissipation of a heat dissipating medium according to a ninth embodiment of the present invention.

detailed Description of the Preferred Embodiments

The 1 and 1a show the rib heat sink structure 1 according to the present invention, this comprises a base plate 10 and radiating fins 11 that are above the base plate 10 are arranged and integrally formed in aluminum by extrusion, by milling, by forging or stamping or by welding. The base plate 10 has passages 102 who are molded in it. The passages 102 take capillary resources 12 formed integrally in the passages by extrusion to form a double-layered pass circuit. The rib heat sink structure 1 which is shaped accordingly, can be used on PCs or notebook computers as well as in projectors, plasma televisions and peripherals to allow heat dissipation.

The base plate 10 is in contact with a heat generating element of a computer to absorb the heat. The passages 102 that are in the base plate 10 are formed by machine use to form a closed circuit. The passages 102 take capillary means formed by extrusion. Furthermore, the base plate and the cooling fins are connected together to form a body in use. The invention can also be used independently on small computer components that require heat dissipation.

The cooling fins 11 are on the base plate 10 arranged, wherein the base plate has a heat-absorbing end to the heat to the cooling fins 11 to transfer, then the heat is distributed by a fan.

The capillary means 12 are integral by extrusion with the passages 102 the base plate 10 formed. The capillary means 12 contain a round tube 120 containing at least one spacing agent 121 has, which is arranged on the outside. The capillary elements 12 can be cut to a predetermined length to be used in different computer elements.

As the 2 shows are the passages 102 in the base plate 10 by capillary means 12 provided to form a two-ply Passagenkreislauf. Each of the passages 102 has an outlet which is sealed at both ends, in which a closure 103 is used, so the passages 102 form a closed circuit. After this vacuum has been sealed, the passage becomes 102 filled with a heat-dissipating medium (liquid or gaseous) 101, the amount being 50% to 90% of the internal volume capacity of the passage 102 (represented by arrows in the 2 ) is.

The rib heat sink structure 1 has a flat surface that is in close, immediate contact with the computer element (such as a heat-generating element) after it has been installed. Heat generated by the computer element during its operation passes the contact surface to enter the finned heat sink structure 1 to get. On the one hand transfers the aluminum base plate 10 the heat through the conduction to the cooling fins 11 , On the other hand, the heat distribution medium absorbs 101 that in the passages 102 The heat is transferred from the liquid state to a gaseous state and thus absorbs the heat generated by the computer element. The existing in the gaseous state heat distribution medium 101 is due to the lower temperature of the radiating fins 11 cooled, whereby a transformation from the gaseous state to the liquid state takes place and the heat through the radiating fins 11 is delivered. This causes the heat distribution medium 1 repeatedly through the state transformation cycle, the liquid state - to the gaseous state - to the liquid state to perform the heat transfer process of heat absorption - heat emission - for heat absorption. Finally, a fan generates one Draft to the heat from the radiating fins 11 to distribute. The above process provides a double heat dissipation, and thus can greatly improve the heat dissipation efficiency of the fin-type heat sink structure 1 improve.

From the 3 another embodiment of the invention will become apparent. It is essentially similar to what is in 1 will be shown. The difference is that the passages 102 that in the base plate 10a are arranged, formed by the use of an extrusion lengthwise. They also include capillary agents 12a which are formed by extrusion. The exit ends of the passages 102 are also by closures 103a sealed.

The 4 shows still another embodiment of the present invention. This corresponds essentially to that in the 1 . shown The difference is that the passages 102b in the base plate 10b incurred by chipping to integrated capillary means 12b formed by extrusion, thereby forming a double-layered passageway with the exit ends of the passages 102b through closures 103b are sealed.

The 5 shows a further embodiment of the present invention. It's essentially like that 4 educated. While the ribs heat sink structure 1c a base plate 10c has the same height as in 4 were shown, so are the radiation fins 11c arranged in different lengths with a different density to account for the different space given around the heat generating element.

The 6 shows another embodiment of the present invention. It essentially corresponds to that in the 1 . shown The difference is that the passages 102d in the base plate 10d are arranged longitudinally and transversely to form a net typical shape using chip-out technique, and wherein the intersecting passages communicate with each other. The exit ends of the passages 102d are through closures 103d sealed. After the passages have been vacuum sealed, the passages become 102d with a heat dissipating medium 101 (shown by the arrows in 6 ), the amount being between 50% and 90% of the internal volume capacity of the network typical passages 102d having.

The 7 shows another embodiment of the present invention. It essentially corresponds to that used in the 1 was shown. The difference of the passages 102 in the base plate 10e is that in the bottom region of the rib heat sink structure 1e reciprocal passages are arranged through two ends of the base plate 10e run and which are formed by ausspanung or extrusion, wherein the capillary 12e through the passages 102e be taken in separate form or integrated within the passages 102e through the extrusion. The exit ends of the passages are through closures 103e sealed. After being vacuumized, the reciprocal passages become 102e with a heat dissipating medium 101 (shown by the arrows in 7 ), the amount being about 50% to 90% of the internal volume capacity of the reciprocal passages 102e is.

The 8th shows a further embodiment of the present invention. This corresponds essentially to that in the 1 . shown The difference is that the passages 102f in the base plate 10f are arranged longitudinally and transversely in a mesh-typical shape, using Ausspantechnik and wherein they cross each other and thereby communicate with each other. A passage has an exit end on one side of the base plate 10f on to an output connection end 104f while the exit end of the passages on another side of the base plate has an input connection end 105f represents. All other exit ends of the passages are through closures 103f sealed. After these have been vacuumed, the latticed passages become 102f with a heat-distributing medium 101 (shown by the arrows in 8th ), the amount being about 50% to 90% of the internal volume capacity of the net-shaped passages 102f includes.

The 9 shows another embodiment of the present invention, which corresponds substantially to that in the 1 . shown The difference is that the output and input connection ends of the base plate 10g correspondingly connected at one end to the passages and at the other end to an external heat exchange circulation system, to an open circuit 100 g to build. Depending on the space needed by the heat generating source, two or more base plates may be used 10g be connected in series.

The 10 shows another embodiment of the present invention. This embodiment substantially corresponds to that in the 1 . shown The difference is that the reciprocal cycles 100h that in the base plate 10h caused by chipping. The reciprocal cycles 100h are connected to an external heat exchange circulation system to the heat dissipation medium 101 (represented by arrows in of the 10 ) circulate.

Claims (10)

A rib radiation structure comprising a base plate ( 10 ) and radiating fins ( 11 ), which are on the base plate ( 10 ), wherein within the base plate ( 10 ) Passages ( 102 ) are formed, the capillary ( 12 ), which are preferably formed by extrusion, further comprising a round tube ( 120 ) which is arranged in the center and which is provided with at least one spacing means ( 121 ) is connected to the outside to form a closed loop of two-ply passages, the passages being vacuumed and sealed with a heat-dissipating medium ( 101 ), wherein the base plate has a heat-absorbing end in order to transfer the heat to the above-arranged radiation fins ( 11 ) and whereby the heat from a heat-producing source is preferably distributed by means of a fan. The rib radiating structure according to the preceding claim 1, characterized in that the base plate ( 10 ) and the radiation fins ( 11 ) are made integral, by extrusion, pressing, forging or welding, wherein the base plate ( 10 ) is freely installable on a small computer element. The rib radiating structure according to one or more of the preceding claims 1 to 2, characterized in that the heat-dissipating means ( 101 ) is liquid or gaseous and in the passages in a volume of 50% to 90% of the internal volume capacity of the passages ( 102 ) is filled. The fin radiation structure according to one or more of the preceding claims 1 to 3, characterized in that the passages ( 102 ) in the base plate ( 10a ) are formed lengthwise. The rib radiating structure according to one or more of the preceding claims 1 to 4, characterized in that the passages ( 102b ) in the base plate ( 10b ) Capillary agent ( 12b ) formed integrally by extrusion to form a double-layered circular passage. The rib radiating structure according to one or more of the preceding claims 1 to 5, characterized in that the height and the density of the radiating fins ( 11c ) are variable, according to the size and / or heat of the heat-generating source. The rib radiating structure according to one or more of the preceding claims 1 to 6, characterized in that the base plate ( 10d ) has longitudinal and transverse passages which intersect each other and communicate with each other in order to obtain key-like passages ( 102d ) to build. The fin radiation structure according to one or more of the preceding claims 1 to 7, characterized in that the base plate has reciprocal passages ( 102e ) and pass through two ends of the base plate, each of the reciprocal passages ( 102e ) Capillary agent ( 12e ) in it, which may also be formed integrally by extrusion. The rib radiating structure according to one or more of the preceding claims 1 to 8, characterized in that the base plate ( 10f ) an output connection end ( 104f ) on one side and an input connection end ( 105f ) on another side, the output connection end ( 104f ) and the input connection end ( 105f ) have an inner end that with the raster-typical passages ( 102f ), and wherein the outer end is connected to an external heat exchanging circulation system. The rib radiating structure according to one or more of the preceding claims 1 to 9, characterized in that the open circuit ( 100 g ) and the reciprocal cycle ( 100h ) is connected to an external heat exchanging circulation system, the open circuit ( 100 g ) allows to be connected in series.