Heat pipe structure
A heat pipe structure includes a main body. The main body has an internal airtight chamber. At least one capillary structure is disposed on a wall face of the airtight chamber. A working fluid is filled in the airtight chamber. The main body has at least one stress concentration section. A retaining reinforcement member is disposed on the capillary structure corresponding to the stress concentration section for reinforcing the capillary structure and securely retaining the capillary structure on the wall face. When the heat pipe is flexed, bent and deformed, the retaining reinforcement member serves to prevent the capillary structure disposed on the stress concentration section from cracking or damaging.
1 . A heat pipe structure comprising:
a main body having an internal airtight chamber and stress concentration sections arranged on bent portions and on over-extended portions of the main body,
at least one layered capillary structure disposed on a wall face of the airtight chamber,
a working fluid filled in the airtight chamber, and
separate retaining reinforcements, each configured as a skeletal structure arranged on an interior surface of the capillary structure and corresponding to a corresponding one of the stress concentration sections to inhibit the capillary structure from cracking or damage.
2 . The heat pipe structure as claimed in claim 1 , wherein the stress concentration sections are positioned on one of the portions of a deformed portion of the main body or a reworked portion of the main body after forming and a flexed, bent, and deformed portion of the main body.
3 . The heat pipe structure as claimed in claim 1 , wherein the main body, the capillary structure, and the retaining reinforcements are made of a material selected from a group consisting of copper, aluminum, stainless steel, titanium, titanium alloy, and aluminum alloy, the main body, the capillary structure, and the retaining reinforcements being made of the same material or different materials.
4 . The heat pipe structure as claimed in claim 1 , wherein the working fluid is selected from a group consisting of coolant, acetone, pure water and alcohol.
5 . The heat pipe structure of claim 1 , wherein the airtight chamber defines an open space for the working fluid as two phases.
6 . The heat pipe structure of claim 1 , wherein the least one layered capillary structure has multiple channels and wherein the retaining reinforcements limit widths of the multiple channels.