CN201242385Y

CN201242385Y - Sintered hot pipe

Info

Publication number: CN201242385Y
Application number: CNU200820126677XU
Authority: CN
Inventors: 杨成诫; 李克勤; 钟蜀龙; 陈其亮
Original assignee: Zhongshan Weiqiang Technology Co Ltd
Current assignee: Zhongshan Weiqiang Technology Co Ltd
Priority date: 2008-07-08
Filing date: 2008-07-08
Publication date: 2009-05-20
Anticipated expiration: 2018-07-08

Abstract

The utility model discloses a sintered type heat pipe, which comprises a metal pipe body and a metal powder sintered layer which is arranged on the inner wall of the pipe body, at least a continuous unsintered region which is extended from one end of the pipe body to the other end of the pipe body is arranged on the inner wall of the pipe body along the axial direction, two section of metal powder sintered layers are arranged on the relative positions of the inner wall of the pipe body along the axial direction, and two metal powder sintered are separated by the unsintered region. The utility model has simple structure, can reduce the contact surface area of liquid of the heat pipe with steam, reduces the flowing resistance of working fluid, reduces the carrying limit between steam and liquid, and increases the heat transfer capability of the heat pipe.

Description

Sintered heat pipe

[technical field]

The utility model relates to a kind of heat pipe, particularly a kind of sintered heat pipe.

[background technology]

Heat pipe is a kind of high-performance heat transfer components, and it mainly is according to Transformation Principle, and a large amount of heat energy is passed to condensation end by evaporation ends, and the heat of thermal objects is delivered to outside the thermal source rapidly, so often by the main heat-transferring assembly of utilization for the heat radiation module.The capacity of heat transmission of heat pipe surpasses the capacity of heat transmission of any known metal, common heat pipe structure is mainly the metal tube of certain vacuum degree, and the quantitative liquid material is arranged in the inside of metal tube, inner surface of tube body is attached with the powder sintered layer of porous metal, itself and tube wall fit tightly, and are to have capillary porous capillary structure.When an end of heat pipe is heated, the liquid evaporation in the capillary structure, steam flow is to an other end of heat pipe, and release heat, is condensed into liquid again, and liquid flows back to heating end by capillary structure again, and circulation is so constantly gone down.In the relative process of flowing with liquid of gas, gas can carry droplet flow, and because of metal powder sintered layer is covered with inboard wall of tube body, so the contact area of gas and liquid is big, the flow resistance of working medium is bigger in the body.

[utility model content]

The purpose of this utility model is: a kind of porous sintered heat pipe is provided, it can reduce the contact area of gas and liquid in the gas-liquid convection process in the pipe, thereby reduces the working medium flow resistance, reduce the entrainment limit between gas and liquid, to promote the adopting heat pipes for heat transfer ability.

The realization the technical solution of the utility model is: a kind of sintered heat pipe, comprise the metal body and be arranged at the metal powder sintered layer of inboard wall of tube body, inboard wall of tube body comprises at least that vertically an end from body extends to the continuous not sintering zone of the body other end;

In the above-mentioned sintered heat pipe, the relative position of described inboard wall of tube body is provided with two sections metal powder sintered layers vertically, and described two sections metal powder sintered layers are spaced apart by described not sintering zone;

In the above-mentioned sintered heat pipe, described inboard wall of tube body offers groove vertically;

In the above-mentioned sintered heat pipe, described metal powder sintered layer is formed by copper powder or aluminium powder or nickel powder or nano-carbon powder sintering;

In the above-mentioned sintered heat pipe, described metal body is circular body or pancake body;

In the above-mentioned sintered heat pipe, described metal body is copper pipe body or aluminum pipe body or stainless steel body or alloy body.

Than prior art, the beneficial effects of the utility model are: the metal powder sintered aspect that has reduced to be arranged in the heat pipe is long-pending, make in the relative process of flowing of liquid in the porous capillary structure that heat pipe gas and metal powder sintered layer form, can effectively reduce the contact area between heat pipe gas and liquid, reduce the entrainment limit of gas, effectively promote the adopting heat pipes for heat transfer ability liquid.

[description of drawings]

Fig. 1 is the utility model sintered heat pipe schematic perspective view.

Fig. 2 is a body cross sectional representation as shown in Figure 1.

Fig. 3 is the mandrel structure schematic diagram that is used for sintering metal powder.

Fig. 4 is the schematic diagram that metal body interpolation is gone into plug.

Fig. 5 is that metal dust is filled in the schematic diagram in the plug groove.

Fig. 6 is that sintering is finished the schematic diagram after the plug extraction.

Fig. 7 is the flat body cross sectional representation of flattening moulding as shown in Figure 2 from the A-A direction.

Fig. 8 is the flat body cross sectional representation of flattening moulding as shown in Figure 2 from the B-B direction.

Among the figure: 1, body; 2, capillary wick; 3, plug; 4, groove.

[specific embodiment]

Below in conjunction with drawings and Examples the utility model is described further.

Referring to Fig. 1 and Fig. 2, optimal way of the present utility model is that the body 1 of heat pipe is the metal body, two of the relative position sintering of body 1 inwall by the metal powder sintered porous capillary wick 2 that forms, capillary wick 2 extends to the other end of body 1 from an end of body 1 along the axial direction of body 1, body 1 inwall is provided with a plurality of small grooves vertically, and the cross section of groove can be arbitrary shape.With respect to prior art, the setting of two capillary wicks 2 can fully reduce the contact area of the liquid in interior gas of heat pipe and the capillary wick, can prevent effectively that again heat pipe from being dryouied.Wherein, the cross section of capillary wick 2 can be arbitrary shape, and metal dust can be copper powder, aluminium powder, nickel powder or nano-carbon powder.

Referring to Fig. 3 to Fig. 6, the preparation method of sintered heat pipe of the present utility model is: insert plug 3 in body 1 inner hollow portion, the relative position place of plug 3 offers two vertical grooves 4, in the gap that body 1 inwall and plug 3 grooves 4 surround, insert diameter greater than the metal dust of body 1 inner wall trench concave surface diameter and carry out sintering, the metal tube bottom face does not have sintering metal powder, the packed height of metal dust can be selected as required, after sintering is finished plug 3 is extracted out, body 1 inwall is attached with the porous capillary wick 3 of metal powder sintered formation, subsequently body 1 openend is carried out reducing, after reducing is finished with in the liquid injecting tube body 1, vacuumize then, utilize anchor clamps to seal, welding.So just finished the making of a heat pipe.

As required, this sintered heat pipe can be round tube body or pancake body.Referring to Fig. 7 and Fig. 8, the circular body that sintering is finished flattens along different directions, can obtain the pancake body of different sintered location.

Described above only is preferred embodiment of the present utility model, and above-mentioned specific embodiment is not to restriction of the present utility model.In technological thought category of the present utility model, various distortion and modification can appear, and the retouching that all those of ordinary skill in the art make according to above description, revise or be equal to replacement, all belong to the scope that the utility model is protected.

Claims

1, a kind of sintered heat pipe comprises the metal body and is arranged at the metal powder sintered layer of inboard wall of tube body that it is characterized in that: inboard wall of tube body comprises at least that vertically an end from body extends to the continuous not sintering zone of the body other end.

2, sintered heat pipe according to claim 1 is characterized in that: the relative position of described inboard wall of tube body is provided with two sections metal powder sintered layers vertically, and described two sections metal powder sintered layers are spaced apart by described not sintering zone.

3, sintered heat pipe according to claim 1 is characterized in that: described inboard wall of tube body offers groove vertically.

4, sintered heat pipe according to claim 1 is characterized in that: described metal powder sintered layer is formed by copper powder or aluminium powder or nickel powder or nano-carbon powder sintering.

5, sintered heat pipe according to claim 1 is characterized in that: described metal body is circular body or pancake body.

6, sintered heat pipe according to claim 1 is characterized in that: described metal body is copper pipe body or aluminum pipe body or stainless steel body or alloy body.