Combined micro-channel structure and method based on magnetic field heat dissipation
A technology of micro-channel structure and channel structure, applied in the field of micro-channel, can solve low-level problems
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Embodiment 1
[0030] Embodiment 1: as figure 1 and Figure 4 As shown, a combined microchannel structure and method based on magnetic field heat dissipation, the device structure includes a heat dissipation base plate (alloy) (4), a combined microchannel structure for heat dissipation (6), a heat source (analog chip) (3), The microchannel is composed of several parallel combined microchannels (only one is added here) to ensure uniform heat exchange. A magnet (5) will be placed on the heat source, and the magnet will be placed directly above the heat source. The magnetic fluid flowing along the microchannel on the thermal base plate will affect the speed of the magnetic fluid due to the addition of a magnetic field, which will improve the heat dissipation performance, that is, the convective heat transfer will be enhanced.
[0031] The heat exchange bottom plate is set under the heat source; the inside of the heat exchange bottom plate contains a microchannel structure, and the ports at bot...
Embodiment 2
[0037] Embodiment 2: This embodiment 2 is based on the combined microchannel structure and method of magnetic heat dissipation, which is basically the same as that of Example 1, except that the distance between two side-by-side multi-squares and rectangles in a combined microchannel is 1.5 mm, the distance between two (or more) combined microchannels is 1.5mm, the diameter of the entrance and exit cylinder is 0.4mm, and the height of the cylinder is 1.8mm;
[0038] The inner wall of the microchannel structure will be provided with a metal oxide coating, and the heat exchange bottom plate will be provided with a thermally conductive silicone grease layer to enhance heat dissipation.
[0039] The length of the heat exchange bottom plate is 30mm (the heat exchange bottom plate is square), the length of the magnet is 22.30mm, and the width is 3.8mm (to be basically attached to the microchannel structure), and the side of the magnet and the side of the heat source are in the bonding...
Embodiment 3
[0041] Embodiment 3: as Figure 1~4 As shown, the convective heat transfer method based on magnetic field heat dissipation, the specific steps are as follows:
[0042] (1) Place one end of the magnet on the working medium inlet of the heat exchange base plate, wait for the magnetic nanofluid to inject into the microchannel from the inlet, and the magnetic fluid inside the microchannel will move downward under the action of the magnetic field force The trend will enhance the characteristics of conjugate heat transmission, which will make the energy generated by the heat source be taken away to a large extent, thereby improving the heat dissipation performance. Enhance the cooling effect.
[0043] (2) With the continuous flow of the magnetic fluid, keep the projection energy of the magnet coincident with the microchannel, and keep it still, so that the magnetic fluid is in the current state of motion, and continuously takes away the energy generated by the heat source.
[0044...
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