Heat pipe with high heat dissipating efficiency

Abstract

A heat pipe (20) includes a pipe (22), a plurality of grooves (24), a hydrophilic layer (26), and a liquid operating fluid (28). The pipe includes an evaporator section (30) and an opposite condenser section (32). The grooves are formed on an inside wall (222) of the pipe. The hydrophilic layer is coated on the grooves. The operating fluid is located in the evaporator section. The operating fluid absorbs heat and is vaporized. The vapor is diffused to the condenser section and releases heat, thereby being transformed back into liquid. The liquid is adsorbed by the hydrophilic layer and is reflowed. This adsorption reduces or even avoids a shear force at an interface of the diffusing vapor and the reflowing liquid. Thus, the cyclical speed of the operating fluid is quickened, enhancing the thermal operating efficiency of the heat pipe.

Dependencies are inferred from the claim text.