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Self-oscillating heat pipe

A self-excited oscillation, heat pipe technology, applied in indirect heat exchangers, lighting and heating equipment, etc., can solve the problems of multiple tubes bending, difficult to work, etc., to achieve the effect of high heat transfer capacity

Inactive Publication Date: 2011-01-05
NAT UNIV CORP YOKOHAMA NAT UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the typical meandering ring type (serpentine ring type) self-excited oscillating heat pipe (inner diameter 0.5 mm to 2 mm) has problems such as needing to bend a plurality of tubes and making it difficult to operate if installed horizontally (see Non-Patent Document 1)

Method used

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  • Self-oscillating heat pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] through as figure 2 The experimental setup shown evaluates the characteristics of the heat pipe.

[0071] First, the glass tube 13 as the connecting channel 5 and the glass tube 12 as the heating part 2 are prepared, and the glass tubes 12 and 13 are fused (fused). Borosilicate glass was formed, and the heating part 2 was formed of borosilicate glass with an inner diameter of 5 mm and a length of 150 mm. Next, on the inner wall of the glass tube 12, a core 14 made of copper mesh was installed. The core 14 is mounted from the weld to a length of up to 100 mm. The part where the core 14 is attached is made into the heating part 2. Next, sealing is performed with the sealing member 11c made of borosilicate glass. Next, the open end 11 b of the glass tube 13 serving as the connecting flow path was immersed in the water bath 21 , and the glass tubes 12 and 13 were filled with pure water serving as the working fluid 20 . Thus, the heat pipe 11 of Example 1 was produced....

Embodiment 2

[0085] Next, the heat pipe of Example 2 was manufactured in the same manner as in Example 1, except that the materials of the heating-side tube and the cooling-side tube were made of quartz glass. Then, as in Example 1, the heat transfer rate Q and the effective thermal conductivity λ of the heat pipe of Example 2 were investigated. eff Relationship. The result is as Figure 5 shown.

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Abstract

A self-oscillating heat pipe includes: a heating unit having a wick inside; a cooling unit filled with a work fluid; a connection channel which has a smaller channel cross section area than that of the heating unit and rectilinearly connects the heating unit to the cooling unit; a liquid plug protruding from the cooling unit into the connection channel and containing the work fluid; and a vapor plug in the heating unit containing the vaporized work fluid. The fluid plug oscillates by itself in the connection channel.

Description

[0001] Cross References to Related Applications [0002] This application is based on and claims the priority and benefits of Japanese Patent Application (Japanese Patent Application) No. 2008-029713 filed in Japan on February 8, 2008, the entire contents of which are hereby incorporated by reference. technical field [0003] The invention relates to a self-excited oscillation heat pipe. Background technique [0004] In recent years, with the reduction in size and high integration of electronic equipment, the heat generation density of semiconductor elements and the like has increased rapidly. Therefore, it is urgent to establish an effective heat dissipation method. However, if the miniaturization of electronic equipment such as notebook personal computers further progresses, it will not be possible to secure a space for installing a large heat sink directly above the central processing unit (CPU), which is a heat source. In this case, it is necessary to transfer the gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D15/06F28D15/02
CPCF28D15/04F28D15/0266
Inventor 奥山邦人森昌司
Owner NAT UNIV CORP YOKOHAMA NAT UNIV