Heat pipe with capillary structure

A heat pipe, comprising:

• a first pipe including an evaporator, a heat insulator and a condenser which communicate with each other to define a hollow chamber, wherein two ends of the first pipe along an axial direction of the heat pipe are sealed;
• and
• at least a second pipe disposed in the hollow chamber and including an accommodating space and a first capillary structure disposed in one end of the accommodating space closer to the evaporator;
• wherein at least one side of an outer pipe wall of the second pipe directly abuts an inner pipe wall of the first pipe, the first pipe further includes a second capillary structure which is disposed in the hollow chamber closer to the evaporator and extended to an outside of the second pipe and occupies at least ⅔ volume of the evaporator, a first part of the first capillary structure and the second capillary structure are connected to each other by winding so as to enhance transportation therebetween,
• wherein the second capillary structure has an uninterrupted section which is rolled up with multiple turns around an axis, the axis is extended along a traverse direction to the axial direction of the heat pipe in the evaporator.