US 11,892,243 B2
Heat pipe with capillary structure
Shih-Lin Huang, Taoyuan (TW); and Chiu-Kung Chen, Taoyuan (TW)
Assigned to DELTA ELECTRONICS, INC., Taoyuan (TW)
Filed by DELTA ELECTRONICS, INC., Taoyuan (TW)
Filed on Aug. 17, 2022, as Appl. No. 17/889,658.
Application 17/889,658 is a division of application No. 16/503,251, filed on Jul. 3, 2019, granted, now 11,454,456.
Application 16/503,251 is a continuation in part of application No. 14/793,132, filed on Jul. 7, 2015, abandoned.
Claims priority of application No. 201410706245.6 (CN), filed on Nov. 28, 2014.
Prior Publication US 2022/0390185 A1, Dec. 8, 2022
Int. Cl. F28D 15/00 (2006.01); F28D 15/04 (2006.01); F28F 13/00 (2006.01); F28D 15/02 (2006.01)
CPC F28D 15/046 (2013.01) [F28D 15/0233 (2013.01); F28F 13/00 (2013.01); F28F 2270/00 (2013.01)] 13 Claims
OG exemplary drawing
 
1. 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 2/3 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 folded up multiple times in the evaporator.