BACKGROUND OF THE INVENTION
The present invention is related to a heat-dissipating module, and more particularly to a heat-dissipating module including a board-type heat-pipe and a heat-conductive construction connected therewith. The board-type heat-pipe is composed of multiple independent heat-pipe units not communicating with each other for dissipating the heat at high efficiency.
There are various electric or electronic products which will generate heat when operating, such as refrigerators, air-conditioners, large-size electronic signs, high-speed electronic elements, etc. In general, a heat-radiating module is arranged for dissipating the heat so as to stabilize the operation of the device. An auxiliary unit with good heat-conductivity is often disposed on the heat-generating element, such as copper plates, aluminum boards, heat-pipes, etc. The heat-radiating module is attached to the surface of the heat-generating element. By means of convection, the heat is transferred to the heat-radiating module and dissipated from the other end of the heat-radiating module distal from the heat-generating element.
In the case that the heat-radiating module is a heat-pipe structure, the heat-pipe is positioned at front end of the heat-radiating module. The heat is transferred from the heat-generating element to the heat-conductive material disposed in the heat-pipe. After absorbed by the heat-conductive material, the heat is transferred to a heat-dissipating end of the heat-radiating module. FIG. 1 shows the heat-dissipating end of the heat-radiating module. A heat-conductive construction 20 is arranged at the heat-dissipating end. The heat-conductive construction 20 has a connecting end 21 connected to the surface of the heat-pipe 30. The other sections of the heat-conductive construction 20 serve as a heat-dissipating end 22. In such conventional structure, the heat-conductive construction 20 includes multiple heat-radiating plates continuously arranged along the surface of the heat-pipe 30 in parallel to each other. As shown in FIG. 2, the heat-pipe has a circular cross-section. The heat is radially transferred from the connecting sections 21 of the heat-conductive construction 20 to the open end 22 of the heat-conductive construction 20.
FIG. 3 shows another type of heat-radiating structure. The heat-conductive element 20 is a metal block structure with channels 23. The metal block is disposed on a winding heat-pipe 30. Referring to FIG. 4, the heat-conductive element 20 has a connecting section 21 in contact with the heat-pipe 30. Similarly, the heat is radially transferred to the open end 22 of the heat-conductive element 20. The heat-pipe 30 simply linearly contacts the heat-conductive element 20. In order to achieve better heat-dissipating effect, it is necessary to enlarge the area of the heat-conductive element 20. However, under such circumstance, the heat-conductive element 20 can still hardly provide good heat-dissipating effect.
It can be seen from FIGS. 2 and 4 that the heat is not uniformly transferred and spread by the heat-conductive construction 20. The heat is more likely radially transferred in accordance with the circular profile of the heat-pipe 30. Accordingly, the sections distal from the connecting end 21, for example, the four corners of the heat-conductive construction 20, can hardly effectively dissipate the heat. This is because during the transfer, most of the heat is concentrated on those sections close to the heat-pipe 30. The sections distal from the heat-pipe can only absorb and dissipate little heat.
SUMMARY OF THE INVENTION
It is therefore a primary object of the present invention to provide an improved heat-dissipating module which is able to more effectively dissipate the heat generated by a heat-generating unit at high efficiency so as to keep the unit working at efficiency.
According to the above objects, the heat-dissipating module of the present invention includes a board-type heat-pipe and a heat-conductive construction connected therewith. The board-type heat-pipe is partially disposed on a heat-generating element for dissipating the heat. The heat-conductive construction has a connecting end in contact with the board-type heat-pipe. Via the connecting end, the heat-conductive construction is connected to a predetermined section of the board-type heat-pipe. The other section of the heat-conductive construction forms an open end. The board-type heat-pipe is composed of multiple independent heat-pipe units not communicating with each other. The heat generated by a heat-generating element can be quickly and uniformly transferred through the heat-pipe units to the heat-conductive construction for dissipating the heat at high efficiency.
The present invention can be best understood through the following description and accompanying drawings wherein:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a conventional heat-dissipating module;
FIG. 2 is a sectional view according to FIG. 1;
FIG. 3 is a perspective view of another conventional heat-dissipating module;
FIG. 4 is a sectional view according to FIG. 3;
FIG. 5 is a perspective view of the heat-dissipating module of the present invention;
FIG. 6 is a sectional view according to FIG. 5;
FIG. 7 is a perspective view of another embodiment of the heat-dissipating module of the present invention;
FIG. 8 is a sectional view according to FIG. 7; and
FIG. 9 is a perspective view showing the heat-dissipating path of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Please refer to FIG. 5. The present invention includes a board-type heat-pipe 10 and a heat-conductive construction 20. The board-type heat-pipe 10 is partially disposed on a heat-generating element 40 (as shown in FIG. 9) for dissipating the heat generated by the heat-generating element 40. The heat-conductive construction 20 has a connecting end 21 for contacting or connecting with the board-type heat-pipe 10. Via the connecting end 21, the heat-conductive construction 20 is connected to a predetermined section of the board-type heat-pipe 10. The other section of the heat-conductive construction 20 forms an open end 22. In this embodiment, the heat-conductive construction 20 includes multiple heat-conductive plates arranged around the board-type heat-pipe 10. The board-type heat-pipe 10 is composed of multiple independent heat-pipe units 11 not communicating with each other. Accordingly, the board-type heat-pipe 10 can quickly and uniformly transfer the heat for heat exchange so as to enhance the heat-dissipating efficiency of the heat-radiating module.
Referring to FIG. 6, the multiple heat-pipe units 11 of the board-type heat-pipe 10 are arranged side by side without communicating with each other. In practice, phase-changeable material is contained in the different heat-pipe units 11, for example, pure water, coolant, organic solvent or a composition thereof. This can greatly enhance the heat-dissipating efficiency to several times of the heat-dissipating efficiency of the conventional uni-heat pipe structure. In addition, in this embodiment, the heat is uniformly transferred and spread to the open end 22 of the heat-conductive construction 20 as shown in FIG. 6. The heat-dissipating areas of all the open ends 22 of the heat-conductive construction 20 serve to dissipate the heat at high efficiency.
FIGS. 7 and 8 show another embodiment of the present invention, in which the board-type heat-pipe 10 is equipped with a heat-conductive construction 20 as a metal block. The metal block is formed with multiple channels 23. The connecting end 21 of the heat-conductive construction 20 connects with the surface of the board-type heat-pipe 10 by large area. In contrast to the conventional structure, such structure has larger heat-transferring area. Besides, the connecting section 21 contacts the board-type heat-pipe 10 by large area so that the heat in the board-type heat-pipe 10 can be quickly and uniformly transferred to the open end 22 of the heat-conductive construction 20 to quickly dissipate the heat as shown in FIG. 8.
Please refer to FIG. 9. One end of the board-type heat-pipe 10 is partially attached to a heat-generating element 40 such as an operating CUP. The end of the board-type heat-pipe 10 is directly or indirectly (via a heat-dissipating plate or a thermoelectric couple) attached to the heat-generating element 40. Under such circumstance, the heat can be quickly transferred through the heat-pipe units 11 to the heat-conductive construction 20 in a direction of the arrows. Even if the board-type heat-pipe 10 is damaged by external force, only one single or few heat-pipe units 11 will be affected. The other heat-pipe units 11 can still work to dissipate the heat and keep the device normally operating. Accordingly, a serviceman will have longer time to repair the board-type heat-pipe 10 so as to ensure that the operation of the device will not be affected.
In conclusion, the heat-dissipating module of the present invention is able to quickly dissipate the heat generated by a heat-generating element. The board-type heat-pipe 10 composed of multiple independent heat-pipe units 11 tightly contacts the heat-conductive construction 20 by large area to quickly transfer the heat so as to enhance the heat-dissipating efficiency. Moreover, the heat-dissipating module of the present invention is applicable to various fields such as minitype chip module and thinned electronic sign.
The above embodiments are only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiments can be made without departing from the spirit of the present invention.
Patent Application
20080190587
