CN2708224Y

CN2708224Y - Pipe wall heated heat pipe having combined type capillary structure

Info

Publication number: CN2708224Y
Application number: CN 200420066329
Authority: CN
Inventors: 徐惠群
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-06-17
Filing date: 2004-06-17
Publication date: 2005-07-06
Anticipated expiration: 2014-06-17

Abstract

The utility model relates to a pipe wall heated heat pipe having combined type capillary structure, comprising the pipe body of the heat pipe and capillary tissues composed of a plurality of grooves and sintered powders, wherein, a plurality of grooves axially extend along the pipe body to be formed on the inner peripheral surface of the pipe body to provide the axial capillary force of the heat pipe; the sintered powders are covered on the local position of at least one side of the inner peripheral surface of the pipe body to provide the radial capillary force of the heat pipe. By means of the property of the composite capillary structure, the liquid phase working fluid can be rapidly gathered at the relative position of the heat pipe and the heating resource, whereas the heating energy is quickly conducted to enhance the heat conducting efficiency of the heat pipe; simultaneously, the problem induced by using the core rod in the process of manufacturing the sintered powder and the defect that the capillary structure of the groove is simple but has no radial capillary force can also be solved.

Description

The heat pipe that tube wall is heated with compound capillary structure

Technical field

The utility model relates to the heat pipe with compound capillary structure that a kind of tube wall is heated, and relates in particular to a kind of capillary structure by plural groove and the compound heat pipe that constitutes of sintered powder.

Background technology

Since characteristics such as capacity of heat transmission height, the heat transfer rate of heat pipe are fast, conduction efficiency is high, in light weight, no mobile component, simple in structure and multipurpose, thus can transmit a large amount of heat and not consume electric power, thereby very big demand is arranged in the market of dispelling the heat.In addition, known tube body of heat pipe inwall all is provided with capillary structure (wick structure), this capillary structure mainly constitutes by having capillary sintered powder etc., by the capillarity of capillary structure, can be beneficial to the transmission of working fluid (working fluid) in the heat pipe.

Yet the former capillary structure that is made of sintered powder is because its powder is more careful, so liquid working fluid can provide preferable capillary force for it when refluxing.But on making, because sintered powder must cooperate a plug to be placed in the body of heat pipe, as the supporter of capillary structure in sintering process, avoiding not, the powder of sinter molding subsides.Therefore, the capillary structure thickness that is made of sintered powder is thicker, relatively can increase its capillary thermal resistance, and is unfavorable for conducting heat.Simultaneously, sintered powder is normal again because of must cooperating plug on making, and is difficult to a large amount of productions and influences problem such as heat pipe quality bills of materials and produce.

In view of this, the design artificially improves and solves the defective that exists in the above-mentioned prior art, through concentrating on studies and cooperating the utilization of scientific principle, proposes a kind of reasonable in design and effectively improve the utility model of above-mentioned defective finally.

Content of the present utility model

The heat pipe with compound capillary structure that provides a kind of tube wall to be heated is provided main purpose of the present utility model, this heat pipe has solved heat pipe capillary structure uses plug in manufacture process problem, thereby avoided manufacture process to influence the transmission characteristic and the hot conductive performance thereof of heat pipe capillary structure, simultaneously, the capillary structure of this heat pipe is had concurrently axially and good capillary force radially.

In order to achieve the above object, the heat pipe with compound capillary structure that the utility model provides a kind of tube wall to be heated comprises a tube body of heat pipe and the capillary structure that is made of plural groove and sintered powder; Plural groove wherein extends axially and forms on this body inner peripheral surface along this body, and sintered powder covers on the part of at least one side of this body inner peripheral surface.The preferable characteristic of capillary force that relies on sintered powder, liquid phase working fluid can be utilized sintered powder and accumulate in the opposite position of heat pipe and pyrotoxin fast, promote the heat conduction efficiency of heat pipe with rapid band from heat energy, thereby achieve the above object.

Brief description of drawings

Fig. 1 is the side cross-sectional schematic of the utility model heat pipe.

Fig. 2 is the cross-section cutaway view of Fig. 1 along 2-2.

Fig. 3 is the cross-section cutaway view of Fig. 1 along another embodiment of 2-2.

Fig. 4 is the cross-section cutaway view of Fig. 1 along the another embodiment of 2-2.

Fig. 5 is the side cross-sectional schematic under the utility model user mode.

Fig. 6 is the cross-section cutaway view of Fig. 5 along 6-6.

In the accompanying drawing, loseing of each label representative is listed as follows:

The 1-heat pipe

10-body 100-port

101-port one 1-top cover

110-perforation 111-fills pipe

112-mouth-sealed portion 12-bottom

13-capillary structure 130-groove

The 131-sintered powder

The 2-thermal conduction base

The 3-radiating fin

The 4-pyrotoxin

The specific embodiment

In order to make those of ordinary skill in the art can further understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, accompanying drawing only provide with reference to and the explanation usefulness, be not to be used for limiting the utility model.

Fig. 1 is the side cross-sectional schematic of the utility model heat pipe.The heat pipe with compound capillary structure that the utility model provides a kind of tube wall to be heated, this heat pipe 1 comprise a body 10, a top cover 11 and a bottom 12; Wherein:

This body 10 is that an inside is the round tubular body of hollow, has two-port 100,101, and wherein top cover 11 places on the port one 00, and port one 01 is connected with bottom 12.Top cover and

bottom

11,12 can be thin plates, make with the mode of one punching out (press), and respectively with two-port 100,101 top cover labyrinths of body 10, so that two-port 100,101 sealings of this body 10.In addition, one perforation 110 is arranged on the top cover 11, one fills pipe 111 is located in this perforation 110, maybe should fill pipe 111 and top cover 11 one machine-shapings (figure slightly), and an amount of working fluid (workingfluid, figure are slightly) be filled pipe 111 thus inject body 10 inside, again through some as after procedure such as vacuumizing, just can on this filling pipe 111, carry out tin sticky or spot welding etc. and seal program, form a mouth-sealed portion 112, thereby should fill pipe 111 sealings.The basic structure that can form heat pipe 1 of the present utility model by said modules.

Please be simultaneously with reference to shown in Figure 2, the utility model mainly is on body 10 inner peripheral surfaces of this heat pipe 1 capillary structure 13 to be set, this capillary structure 13 is made of with sintered powder 131 plural groove 130; Plural groove 130 wherein extends axially, forms on these body 10 inner peripheral surfaces along body 10, sintered powder 131 covers the place, part of at least one side of these body 10 inner peripheral surfaces, the area that described sintered powder 131 covers these body 10 inner peripheral surfaces only needs only to need local the covering (as shown in Figure 2) diametrically in body 10 middle sections (as shown in Figure 1) of heat pipe 1 in the axial direction.Therefore, this heat pipe 1 is in the manufacture process that covers sintered powder 131, just do not need to use plug, and after only the body 10 of this heat pipe 1 need being lain low, make need to cover sintered powder 131 in the body 10 a side down, and after laying an amount of sintered powder 131, can carry out the sintering program to this heat pipe 1.

In addition, the shape of groove 130 can be square (as shown in Figure 2) that inwardly concaves, trapezoidal (as shown in Figure 3) or pointed (as shown in Figure 4) etc.

Therefore, can constitute the heat pipe that wall of the present utility model is heated by above-mentioned structure with compound capillary structure.

Fig. 5 and Fig. 6 are respectively the side cross-sectional schematic of the utility model user mode and Fig. 5 cross-section cutaway views along 6-6.As shown in the figure, this heat pipe 1 is flat on the thermal conduction base 2, and the plurality of radiating fins 3 that bridges on this heat pipe 1, and these thermal conduction base 2 bottoms contact with a pyrotoxin 4, and this pyrotoxin 4 is corresponding with the sintered powder 131 in heat pipe 1 body 10.When pyrotoxin 4 began to produce heat, the working fluid in heat pipe 1 body 10 became gas phase promptly because of meeting undergoing phase transition of heat by liquid phase; After the working fluid of gas phase rises, can flow to top cover and

bottom

11,12 respectively along with the groove 130 that axially stretches, Yin Wendu reduces and reverts back to liquid phase gradually, and is back to a side of heat pipe 1 body 10 contiguous thermal conduction bases 2.At this moment, because the sintered powder 131 that covers in this heat pipe 1 is relative with pyrotoxin 4, and the capillary force at these heat pipe 1 sintered powder 131 places is preferable, so the working fluid of liquid phase can assemble fast (because of the liquid phase working fluid flowing velocity at sintered powder 131 places very fast), and the heat that this pyrotoxin 4 is produced rapidly band from.And, because the quickening of the back-flow velocity of liquid phase working fluid, so the hot transfer efficiency of this heat pipe 1 also can obtain to promote relatively.

In sum, because the heat pipe with compound capillary structure that is heated of the utility model tube wall is the capillary structure that is made of described heat pipe plural groove and sintered powder, so it is preferable and need not use characteristics and effect such as plug manufacturing to the utlity model has the capillary force of sintered powder; The utility model is real to be rare novel creation product, it really can reach the application target of expection, solve the defective that exists in the known technology, tool novelty and creativeness, meet the requirement of utility application fully, file an application according to Patent Law, would like to ask detailed survey and authorize the utility model patent, to ensure the design people's right.

The above is a preferred embodiment of the present utility model only, is not so promptly limits claim of the present utility model, and the equivalent structure transformation that every utilization the utility model specification and accompanying drawing content are done all in like manner is included in the scope of the present utility model.

Claims

1, the heat pipe with compound capillary structure that a kind of tube wall is heated comprises:

Tube body of heat pipe; And

Capillary structure is characterized in that described capillary structure is made of plural groove and sintered powder, and plural groove wherein extends axially and forms on this body inner peripheral surface along this body, and sintered powder covers the place, part of at least one side of this body inner peripheral surface.

2, the heat pipe with compound capillary structure that tube wall as claimed in claim 1 is heated is characterized in that described body has two-port, and this two-port is respectively with top cover and bottom sealing.

3, the heat pipe with compound capillary structure that tube wall as claimed in claim 1 is heated is characterized in that being equipped with on the described top cover one and fills pipe.

4, the heat pipe with compound capillary structure that tube wall as claimed in claim 3 is heated is characterized in that described filling pipe and top cover are one-body molded.

5,, as the heat pipe that claim 3 or 4 described tube walls are heated with compound capillary structure, it is characterized in that forming on the described filling pipe mouth-sealed portion.

6, the heat pipe with compound capillary structure that tube wall as claimed in claim 1 is heated, it is square to it is characterized in that being shaped as of described groove inwardly concaves.

7, the heat pipe with compound capillary structure that tube wall as claimed in claim 1 is heated, it is trapezoidal to it is characterized in that being shaped as of described groove inwardly concaves.

8, the heat pipe with compound capillary structure that tube wall as claimed in claim 1 is heated, it is pointed to it is characterized in that being shaped as of described groove inwardly concaves.