Heat pipe

Abstract

The utility model discloses a heat pipe which comprises a heat pipe body, and a plurality of grooves are axially arranged on the inner wall surface of the heat pipe body. The upper end face of the capillary structure filled in the groove is the protruding arc face, the surface area of the capillary structure can be increased, the contact area with vapor and liquid is increased, and therefore the conduction effect is improved. The bottom face in the groove is axially provided with a protruding strip with the upper end face being a protruding arc face, the protruding strip abuts against the bottom of the capillary structure, the protruding strip is matched with the core rod, copper powder is extruded and then sintered to form the capillary structure, and due to the arrangement of the protruding strip, the thickness of the capillary structure is reduced, materials are saved, and sintering is easy. An inner water channel of which the opening width of a notch is smaller than the width of the bottom of the notch is axially arranged on the raised line, and the particle size of copper powder particles is larger than the width of the notch of the inner water channel, so that when the copper powder is filled for sintering, the copper powder cannot enter the inner water channel, the inner water channel is used for vapor and liquid to pass through, and the bottom of the capillary structure is in contact with vapor and liquid passing through the inner water channel, so that better capillary force is achieved; the heat transfer efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of heat pipes, in particular to a heat pipe. Background Art

[0002] Existing heat pipes primarily achieve excellent heat dissipation by stretching grooves inside the heat pipe, inserting a core rod inside the heat pipe as an auxiliary, and then filling and sintering copper powder between the core rod and the heat pipe to form a capillary structure. This capillary structure provides a capillary force that drives the liquid back, thereby achieving good heat dissipation. The greater the contact area between the capillary structure and the vapor and liquid, the better the conduction effect. How to increase the contact area between the capillary structure and the vapor and liquid is the technical problem to be solved by this utility model. Utility Model Content

[0003] The main purpose of the utility model is to provide a heat pipe with good conduction effect.

[0004] The utility model provides a heat pipe, comprising a heat pipe body, wherein a plurality of grooves are axially provided on the inner wall surface of the heat pipe body, and a convex strip with a raised arc surface on the bottom surface of the groove is axially provided. The groove is filled with a capillary structure formed by sintering copper powder, and the upper end surface of the capillary structure is a raised arc surface. The convex strip abuts the bottom of the capillary structure.

[0005] Preferably, the convex strip is axially provided with an inner water channel whose opening width is smaller than the width of the groove bottom, and the particle size of the copper powder particles is larger than the width of the groove opening of the inner water channel.

[0006] Preferably, the groove, the convex strip and the heat pipe body are integrally formed.

[0007] The beneficial effects of the heat pipe of the utility model are:

[0008] The upper end surface of the capillary structure filled in the groove of the utility model is a convex arc surface. Compared with the existing capillary structure with a flat upper end surface, it can increase the surface area of ​​the capillary structure and increase the area in contact with gas and liquid, thereby improving the conduction effect.

[0009] The bottom surface of the groove is axially provided with a convex strip with a raised arc surface on the upper end. The convex strip rests on the bottom of the capillary structure. The convex strip cooperates with the core rod to extrude copper powder and then sinter to form a capillary structure. The arrangement of the convex strip reduces the thickness of the capillary structure, saves materials and facilitates sintering.

[0010] An inner water channel is axially provided on the convex strip, the opening width of which is smaller than the width of the groove bottom. The particle size of the copper powder particles is larger than the width of the groove of the inner water channel, so that when the copper powder is filled and sintered, the copper powder will not enter the inner water channel. The inner water channel is used for the passage of vapor and liquid, and the bottom of the capillary structure contacts the vapor and liquid passing through the inner water channel, thereby achieving better capillary force and improving heat transfer efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of the heat pipe body of the present invention.

[0012] Figure 2 This is a schematic structural diagram of the heat pipe of the present invention.

[0013] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0014] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0015] Reference Figure 1 and Figure 2 , an embodiment of the heat pipe of the utility model is proposed:

[0016] A heat pipe includes a heat pipe body 1, wherein a plurality of grooves 2 are evenly distributed axially on the inner wall surface of the heat pipe body 1, and a convex strip 3 with a raised arc surface at the bottom surface of the groove 2 is axially provided. The groove 2, the convex strip 3 and the heat pipe body 1 are integrally formed.

[0017] The groove 2 is filled with a capillary structure 5 formed by sintering copper powder. The upper end surface of the capillary structure 5 is a convex arc surface. Compared with the existing capillary structure with a flat upper end surface, it can increase the surface area of ​​the capillary structure and increase the area in contact with gas and liquid, thereby improving the conduction effect.

[0018] The convex strips 3 are against the bottom of the capillary structure 5. The convex strips 3 cooperate with the core rod to squeeze the copper powder and then sinter to form the capillary structure. The arrangement of the convex strips 3 reduces the thickness of the capillary structure 5, saves materials and facilitates sintering.

[0019] An inner water channel 4 is axially provided on the convex strip 3, the opening width of which is smaller than the width of the groove bottom. The particle size of the copper powder particles is larger than the groove width of the inner water channel 4, so that when the copper powder is filled and sintered, the copper powder will not enter the inner water channel 4. The inner water channel 4 is used for the passage of vapor and liquid. The bottom of the capillary structure 5 contacts the vapor and liquid passing through the inner water channel 4, thereby achieving better capillary force and improving heat transfer efficiency.

[0020] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A heat pipe, characterized in that: The invention comprises a heat pipe body, wherein a plurality of grooves are axially provided on the inner wall surface of the heat pipe body, and a convex strip with a raised arc surface on the bottom surface of the groove is axially provided. The capillary structure formed by sintering copper powder is filled in the groove, and the upper end surface of the capillary structure is a raised arc surface. The convex strip abuts against the bottom of the capillary structure.

2. The heat pipe according to claim 1, wherein An inner water channel with a slot opening width smaller than the slot bottom width is axially provided on the convex strip, and the particle size of the copper powder particles is larger than the slot opening width of the inner water channel.

3. The heat pipe according to claim 1 or 2, characterized in that The groove, the convex strip and the heat pipe body are integrally formed.

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