Strengthened heat transfer structure, gravity assisted heat pipe using same and radiator using gravity assisted heat pipe

The utility model discloses a strengthened heat transfer structure at the bottom of a gravity assisted heat pipe. The strengthened heat transfer structure comprises a liquid collection cup arranged in an inner cavity of the gravity assisted heat pipe, a drain port is formed in the position, corresponding to a heat source at the bottom of the gravity assisted heat pipe, of the liquid collection cup, and a steam channel for steam working mediums to pass through and a liquid collection flow channel for liquid working mediums to flow to the drain port from the periphery of the liquid collection cup are formed in the liquid collection cup. The strengthened heat transfer structure at the bottom of the gravity assisted heat pipe is simple in structure and low in manufacturing cost and solves the problem that the temperature gradient formed at the bottom of the gravity assisted heat pipe is not favorable for heat dissipation and cooling of the heat source, the heat transfer efficiency and the performance of the gravi