Heat pipe structure

Abstract

A heat pipe structure includes a pipe body and a convection device. The pipe body defines a chamber enclosed in an inner wall of the pipe body. The convection device includes a rotary unit and a driving unit for creating a fluid pressure gradient in the chamber of the pipe body. The rotary unit and the driving unit are respectively located at an interior and an exterior of the pipe body. When the driving unit is excited, the rotary unit is driven to rotate under magnetic induction. With the fluid pressure gradient created in the chamber of the pipe body, the circulation of the working fluid in the chamber can be improved, and a forced convection flow of the working fluid in the pipe body is enabled to largely increase the heat transfer efficiency and heat transfer effect of the heat pipe.

1 . A heat pipe structure, comprising:
 a pipe body defining a chamber enclosed in an inner wall of the pipe body; and   a convection device including a rotary unit and a driving unit, which are respectively arranged at an interior and an exterior of the pipe body.   
     
     
         2 . The heat pipe structure as claimed in  claim 1 , wherein the rotary unit is fitted in the chamber and includes a ring body and a blade assembly; the ring body having an outer side and an inner side, the outer side being faced toward the inner wall of the pipe body and having a plurality of magnetic bodies provided thereon, and the blade assembly being mounted to the inner side of the ring body; and wherein the driving unit is externally mounted around the pipe body and has a plurality of magnetic poles formed thereon to correspond to the rotary unit. 
     
     
         3 . The heat pipe structure as claimed in  claim 2 , wherein each of the magnetic poles includes a plurality of silicon steel plates wound around by a plurality of coils. 
     
     
         4 . The heat pipe structure as claimed in  claim 2 , wherein the blade assembly includes a hub and a plurality of blades; and each of the blades having a first end connected to the hub and a second end connected to the inner side of the ring body. 
     
     
         5 . The heat pipe structure as claimed in  claim 1 , wherein the rotary unit includes a movable blade set, a fixed blade set, a first hub, a first shaft base, a bearing, and a rotary shaft; the movable blade set including a plurality of blades, each of which has a first end connected to the first hub and a free second end; the bearing being received in the first hub; the fixed blade set including a plurality of blades, each of which has a third end connected to the first shaft base and a fourth end connected to the inner side of the ring body; and the rotary shaft having an end inserted in the bearing and another end rotatably connected to the first shaft base. 
     
     
         6 . The heat pipe structure as claimed in  claim 1 , wherein the chamber is filled with a working fluid. 
     
     
         7 . The heat pipe structure as claimed in  claim 2 , wherein the ring body has a plurality of first teeth formed on the outer side thereof, and a space being formed between two adjacent first teeth for receiving one of the magnetic bodies therein. 
     
     
         8 . The heat pipe structure as claimed in  claim 2 , wherein the ring body has a plurality of second teeth formed on the outer side thereof, and each of the second teeth being formed at a free end thereof with a recess for receiving a ball therein. 
     
     
         9 . The heat pipe structure as claimed in  claim 1 , wherein the pipe body further includes a first working section and a second working section. 
     
     
         10 . The heat pipe structure as claimed in  claim 1 , wherein the pipe body further includes an evaporating end and a condensing end. 
     
     
         11 . The heat pipe structure as claimed in  claim 9 , wherein the first working section includes a first portion and a second portion, which are serially connected to each other; the first portion being made of a material selected from the group consisting of a copper material and an aluminum material; and the second portion being made of a polymeric material. 
     
     
         12 . The heat pipe structure as claimed in  claim 9 , wherein the second working section includes a third portion and a fourth portion, which are serially connected to each other; the third portion being made of a material selected from the group consisting of a copper material and an aluminum material; and the fourth portion being made of a polymeric material. 
     
     
         13 . The heat pipe structure as claimed in  claim 11 , wherein the rotary unit and the driving unit are arranged on the second portion. 
     
     
         14 . The heat pipe structure as claimed in  claim 12 , wherein the rotary unit and the driving unit are arranged on the fourth portion. 
     
     
         15 . The heat pipe structure as claimed in  claim 11 , wherein the polymeric material is Teflon. 
     
     
         16 . The heat pipe structure as claimed in  claim 12 , wherein the polymeric material is Teflon. 
     
     
         17 . The heat pipe structure as claimed in  claim 13 , wherein the polymeric material is Teflon. 
     
     
         18 . The heat pipe structure as claimed in  claim 14 , wherein the polymeric material is Teflon.