CN103217036A

CN103217036A - Heat fin

Info

Publication number: CN103217036A
Application number: CN2012100162844A
Authority: CN
Inventors: 张跃
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-18
Filing date: 2012-01-18
Publication date: 2013-07-24
Also published as: CN106839845A

Abstract

The invention discloses a heat fin, which comprises two side panels, a frame for connecting the two side panels, a capillary structural layer and a phase changing working medium, wherein the two side panels and the frame form a hollow thin-plate shell; the capillary structural layer is closely attached onto the inner wall of the shell; the phase changing working medium is sealed in the shell; a local part of the edge of each side panel or a local part of the frame is used as an evaporation area, and the rest part of each side panel or the rest part of the shell is used as a condensation area. Due to the adoption of the heat fin, the area of a steam conveying passage, the reflux width of the liquid working medium and the direct heat radiation area of the condensation area are increased, the distance from the center of the evaporation area to the edge of the evaporation area is shortened, the heat conduction limit is greatly improved, and a higher heat flow density is obtained.

Description

Hot wing

Technical field

The present invention relates to a kind of phase-change heat transfer device, particularly a kind of hot wing (heat-wing).

Background technology

The phase-change heat transfer device is compared the solid metallic of high thermal conductivity coefficient, have higher equivalent thermal conductivity factor and the heat dispersion of Geng Jia, the liquid-working-medium phase transformation of its dependence self inside realizes heat conduction, has advantages such as high-termal conductivity, good isothermal, is applied in industrial widely.At present, heat pipe and soaking plate are heat abstractors comparatively commonly used in the phase-change heat transfer device.

Referring to Fig. 1, typical heat pipe is made up of shell 11, capillary structure 12 and the phase transformation working media 13 that is sealed in the pipe.The making of heat pipe is sealed after being full of phase change medium 13 in the capillary structure 12 of being close to shell 11 inwalls filling after being evacuated in the pipe with suitable phase transformation working media 13, making earlier usually.One end of heat pipe is an evaporating area 14, and the other end is a condensing zone 15.When heat pipe evaporating area 14 is heated, liquid-working-medium 13 boil-off gas change into gaseous working medium 16 in the capillary structure 12, gas passing hole channel 17 under differential pressure action flows to condensing zone 15, condense into liquid working media 13 and emit heat, liquid working media 13 flows back to evaporating area 14 by capillarity along capillary structure.So circulation, heat 18 constantly reaches condensing zone 15 from evaporating area 14, realizes radiating effect.But heat pipe is because its diameter is less relatively, and its vapor transmission is linear transfer mode, approximate one dimension, and the transmission duct of steam is less, liquid working media backflow width is shorter, make heat pipe too early reach heat transport limitation.

As the improvement of heat pipe, soaking plate comprises base plate, loam cake, capillary structure and working media, and the base plate zone line part of soaking plate is as evaporating area, and upper cover part is as condensing zone, and it is identical with the principle of heat pipe, just the transfer mode difference of heat.At inside heat pipe, vapor transmission is the plane transfer mode, and approximate two dimension is compared with heat pipe, and the vapor transmission passage of soaking plate is bigger, liquid working media backflow wider width, so the isothermal performance of soaking plate is better than heat pipe.But,, cause the evaporating area center of soaking plate to make that the heat transport limitation value of soaking plate is lower than evaporate to dryness morning because soaking plate evaporating area center is longer to the distance at evaporating area edge.

Therefore, need the New-type phase change heat transfer unit (HTU) that a kind of vapor transmission passage of research and development is big, working media backflow width is wide, the isothermal performance is good, heat transport limitation is higher.

Summary of the invention

Short, the higher phase-change heat transfer device of heat transport limitation of distance that the object of the present invention is to provide that a kind of vapor transmission passage is big, working media backflow wider width, evaporating area central area arrives the evaporating area edge.

For achieving the above object, the invention provides a kind of hot wing, comprising:

Two side panels and the frame that is connected side panel are to constitute the lamellar housing of a hollow;

The capillary structure layer of being close to inner walls; With

Be sealed in the phase transformation working media in the housing;

Wherein, the part at the edge of described side panel or the part of frame are as evaporating area, and described side panel or housing remainder are as condensing zone.

In another preference, the material of described housing is copper, aluminium, stainless steel metal or alloy or other highly heat-conductive materials.

In another preference, described capillary structure layer can be powder sintered, silk screen, groove, fiber, can apply or growing nano carbon wall, CNT, nano carbon microsphere, or coating, other nanoscales of growing, micron order organic or inorganic thin layers of molecules, or the mixing of aforementioned structure and material, can single or multiple lift compound, and other can produce capillary structure.

In another preference, described phase transformation working media can comprise the mixture of water or other liquid, low-melting-point metal, nano carbon microsphere, other nano particles and aforementioned substances, or other produce the material of gas-liquid phase transition in the serviceability temperature scope.

In another preference, described two parallel to each other or almost parallels of side panel.

In another preference, described side panel can be rectangle or other arbitrary shapes.

In another preference, the cross-sectional width of the close evaporating area of described hot wing also can be less than or equal to its upper width greater than its upper width.

In another preference, the inner appropriate vacuum degree of making of hot wing according to the mechanical strength of housing and the positive and negative pressure of required opposing, can be provided with between described two side panels and support or syndeton.

In another preference, the shape of described support or syndeton can be point-like, wire or sheet.

In another preference, described hot wing also can be provided with fin.

In another preference, on described hot wing and/or fin, can apply the black body radiation material.

In another preference, described hot wing also can be provided with the pipe that vacuumizes with topping up.

In another preference, described hot wing array is arranged on the thermal source.

Compared with prior art, beneficial effect of the present invention is: hot wing of the present invention is the lamellar hollow housing of a sealing, and the length and width of this hot wing is much larger than its thickness, so the vapor transmission passage of hot wing is bigger, can have good isothermal performance.The spacing of two side panels is minimum, the part at the edge that lamellar housing relative area is very little or the part of frame are as evaporating area, contact with the thermal source surface,, avoided the evaporating area central area phenomenon of evaporate to dryness early so the evaporating area center is extremely short to the distance at evaporating area edge.Two side panels that the housing area is bigger so the area of condensing zone is very big, help dispersing and condensation of heat as condensing zone, and the backflow wider width of working media has strengthened the flow of liquid working media.This hot wing has improved heat transport limitation significantly, so that can obtain higher heat flow density.

Description of drawings

Fig. 1 is the generalized section of heat pipe in the prior art;

Fig. 2 is the stereogram of the hot wing of first embodiment of the invention;

Fig. 3 is the profile that Fig. 2 dissects along A-A;

Fig. 4 is the generalized section of the hot wing of second embodiment of the invention;

Fig. 5 is the generalized section of the hot wing of third embodiment of the invention;

Fig. 6 is the generalized section of the hot wing of fourth embodiment of the invention;

Fig. 7 is the generalized section of the hot wing of fifth embodiment of the invention;

Fig. 8 is the generalized section of the hot wing of sixth embodiment of the invention;

Fig. 9 is the stereogram of the hot wing array of seventh embodiment of the invention;

Figure 10 is the generalized section of the hot wing array of eighth embodiment of the invention;

Figure 11 is the three-dimensional exploded view of Figure 10.

The specific embodiment

For above-mentioned purpose of the present invention, feature and advantage can be become apparent, the specific embodiment of the present invention is elaborated below in conjunction with accompanying drawing.Need to prove that the present invention is not limited to the following specific embodiment, those skilled in the art should understand the present invention from the spirit that following embodiment embodied, and each technical term can be done the most wide in range understanding based on spiritual essence of the present invention.Same or analogous member uses the same reference numerals to represent among the figure.

Fig. 2, Fig. 3 show the first embodiment of the present invention, as shown in the figure, hot wing of the present invention comprises two side panels 21 and the

frame

22,23 that is connected two side panels 21 of the tabular housing 2 that constitutes hollow, be close to housing 2 inwalls capillary structure layer 12, be sealed in the phase transformation working media 13 in the housing 2; Wherein, described

frame

22,23, for example the regional area of bottom frame 23 contacts the formation evaporating area with thermal source 3, with the remainder of housing 2 as condensing zone, in addition, also can be only with side panel 21 as condensing zone.

The length and width of this hot wing is much larger than its thickness, so the vapor transmission passage of hot wing is bigger, can have good isothermal performance.The spacing of two side panels 21 is minimum, the part at the edge that lamellar housing 2 relative areas are very little or the part of frame 23 are as evaporating area, contact with the thermal source surface,, avoided the evaporating area central area phenomenon of evaporate to dryness early so the evaporating area center is extremely short to the distance at evaporating area edge.Two side panels 21 that housing 2 areas are bigger so the area of condensing zone is very big, help dispersing and condensation of heat as condensing zone, and the backflow wider width of working media has strengthened the flow of liquid working media.This hot wing has improved heat transport limitation significantly, so that can obtain higher heat flow density.

The material of housing 2 can select copper, aluminium, stainless steel metal or alloy or other highly heat-conductive materials to realize better heat-conducting effect.Capillary structure layer 12 can be powder sintered, silk screen, groove, fiber, can apply or growing nano carbon wall, CNT, nano carbon microsphere, or coating, other nanoscales of growing, micron order organic or inorganic thin layers of molecules, or the mixing of aforementioned structure and material, can single or multiple lift compound, and other can produce capillary structure.There is phase transformation working media 13 hot wing inside, and working media 13 can comprise the mixture of water or other liquid, low-melting-point metal, nano carbon microsphere, other nano particles and aforementioned substances, or other produce the material of gas-liquid phase transition in the serviceability temperature scope.

Appropriate vacuum degree can be made in the inside of hot wing, can support or syndeton (not shown) between the side panel 21 be set according to the mechanical strength of housing 2 and the required positive and negative pressure that bears.The shape of support or syndeton can be point-like, wire, sheet or other Any shape.In addition, in some other embodiment of the present invention, also can not have this support or syndeton, the force request that only need satisfy housing 2 gets final product.

In the present embodiment, two side panels 21 parallel to each other, the cross-sectional width of bottom of being close to thermal source 3 is greater than the width on hot wing top.In addition, in some other embodiment of the present invention, two side panels 21 can be parallel to each other fully, or the bottom width of hot wing can be different from the width on top.

Hot wing also can for example be provided with fin (not shown) on side panel 21, vacuumize the pipe servicing units such as (not shown) with topping up.Fin is mainly used in the heat of auxiliary loses heat wing inside.In addition, can on hot wing and/or fin, apply the black body radiation material.Black body radiation material help the to volatilize heat of hot wing and fin inside plays better heat-transfer effect.Vacuum-pumping tube is used to make the vacuum condition of hot wing inside, with the required condition of work of the working media that satisfies hot wing.In addition, in some other embodiment of the present invention, also can not possess this fin, vacuumize the pipe with topping up.

Fig. 4 to Fig. 8 shows second to the 6th embodiment of the present invention respectively, referring to Fig. 4 to Fig. 6, various section configuration can be arranged at the bottom that has shown hot wing, side panel 21 as the hot wing of Fig. 4 is the circular arc of evagination near the evaporating area bottom, and Fig. 5 is the circular arc of indent, and Fig. 6 is roughly rectangle, its width can be slightly larger than hot wing top, in addition, be appreciated that the bottom width of hot wing also can be less than or equal to the width on hot wing top.

Referring to Fig. 4 to Fig. 8, the upper side frame 22 that has shown hot wing can have the sealing of different process.Sealing as Fig. 4 is a circular arc, and Fig. 5 is a linear pattern, and Fig. 6 is the mountain font, and Fig. 8 is L type roughly.

Referring to Fig. 4 to Fig. 8 and Figure 10, shown that also hot wing can make multiple shape, represented that as Fig. 7 hot wing can make two side panels, 21 approximately parallel wedge shapes.Fig. 5, Fig. 6 have represented that hot wing can be made into crooked shape.Fig. 8 has shown that hot wing is with the part at the edge of its side panel 21 example as evaporating area.Figure 10 has represented that when highly restricted, hot wing can stretch to both sides.

Fig. 9 shows the seventh embodiment of the present invention, as shown in the figure, this embodiment is arranged on a plurality of array parallel arrangements of the hot wing of above-mentioned Fig. 2 on the thermal source, and cover the thermal source surface fully, the mode of this kind array arrangement from the two-dimensional expansion to three dimensions, can obtain higher heat flow density with phase-change heat transfer.

Figure 10, Figure 11 show the eighth embodiment of the present invention, as shown in the figure, this embodiment is arranged on a plurality of array arrangements of the hot wing of J type of above-mentioned Fig. 6 on the thermal source, and cover the thermal source surface fully, be with the difference of the 7th embodiment, each hot wing stretches to both sides near thermal source, relatively is applicable to highly conditional occasion.

Should be understood that those skilled in the art can make various changes or modifications the present invention after having read above-mentioned instruction content of the present invention, these equivalent form of values fall within the application's appended claims institute restricted portion equally.

Claims

1. hot wing comprises:

The capillary structure layer of being close to inner walls; With

Be sealed in the phase transformation working media in the housing;

It is characterized in that the part at the edge of described side panel or the part of frame are as evaporating area, the remainder of described side panel or housing is as condensing zone.

2. hot wing according to claim 1 is characterized in that, described two parallel to each other or almost parallels of side panel.

3. hot wing according to claim 1 is characterized in that, is provided with between described two side panels to support or syndeton.