| 摘要 |
A heat sink 30 comprises a structure 31 fabricated from aluminium. The structure comprises a surface to be thermally connected to a device 40 to be cooled, such as an electrical component, and a surface to be exposed to a coolant liquid. The surface to be exposed to a coolant liquid has a surface coating which is resistant to corrosion by the coolant liquid. At least one first channel 32, which is adapted to accept liquid coolant flow there-along, is formed in the structure. The surface coating may be a hard anodised layer or a layer of an inert material such as copper, nickel, chromium, gold, silver or epoxy resin. Preferably, at least a portion of the surface to be thermally connected to a device to be cooled has a surface coating which is electrically insulating; this electrically insulating surface coating may be a hard anodised layer or a layer of epoxy resin compound. At least one second channel 37, internal of the structure, may be provided for linking two or more of the first channels. The individual first and second channels may be plugged with plugs 36. Preferably, the heat sink structure comprises a plate of extruded aluminium, where the plate is finned. |
