Heat pipe with grooves

Abstract

The invention discloses a heat pipe with grooves, which comprises a pipe body. A plurality of groove structures which are used as actuating liquid loops are arranged on the pipe body along the radial direction of the inner wall of the pipe body, copper powder particles are filled in the pipe body and are sintered to form a copper powder layer, the section of each groove structure is a trapezoidal structure, and the width of the top of a notch of each groove structure is smaller than that of the bottom of the notch, and is smaller than the average particle size of the copper powder particles. The tops of the notches of actuating liquid loops of the heat pipe with the grooves are far narrower than the bottoms of the notch, accordingly, the copper powder particles cannot fall into the groove structures to block the actuating liquid loops when filled into the pipe, content of actuating liquid in the groove structures is improved, and maximum heat transfer quantity is increased.

Description

technical field [0001] The invention relates to a heat pipe, in particular to a grooved heat pipe. [0002] Background technique [0003] The grooved heat pipe used in the existing heat sinks of electronic products is more and more welcomed by some manufacturers because of its low cost, and has become their main product. [0004] see image 3 As shown, it is a partial cross-sectional view of an ordinary H-shaped pipe. The tank body is approximately rectangular in shape, and the width of the tank top is equal to that of the tank bottom. At the bottom, the width of the groove can only be smaller than the particle size of the copper powder, so that the working liquid channel of the finished heat pipe made of this type of pipe is seriously reduced, and the efficiency of the heat pipe is greatly reduced. [0005] see Figure 4 As shown, it is a partial cross-sectional view of a V-shaped copper pipe. The groove body is in a triangular shape, and the bottom of the groove is almo...

AI Technical Summary

Problems solved by technology

Similarly, if the width of the top of the groove is greater than the particle size of the copper powder, the copper powder will also fall to the bottom of the groove, and the working liquid channel of the finished heat pipe formed by it will also be significantly smaller.

resulting in a loss of performance

[0006] Therefore, low cost also has its disadvantages, that is, these grooved heat pipes cannot achieve the performance of sintered heat pipes due to the limitations of their structure and physical properties.

It cannot be used in products with high power requirements or in environments with harsh working conditions

Therefore, it is impossible to expand its low-cost advantage to a wider field

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