CN106871676B - The heat pipe of upper header sectional area variation - Google Patents
The heat pipe of upper header sectional area variation Download PDFInfo
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- CN106871676B CN106871676B CN201710203455.7A CN201710203455A CN106871676B CN 106871676 B CN106871676 B CN 106871676B CN 201710203455 A CN201710203455 A CN 201710203455A CN 106871676 B CN106871676 B CN 106871676B
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- 239000012530 fluid Substances 0.000 claims abstract description 27
- 230000005494 condensation Effects 0.000 claims abstract description 10
- 238000009833 condensation Methods 0.000 claims abstract description 10
- 238000001704 evaporation Methods 0.000 claims abstract description 10
- 230000008020 evaporation Effects 0.000 claims abstract description 10
- 238000005452 bending Methods 0.000 claims description 5
- 238000012937 correction Methods 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims 1
- 238000002207 thermal evaporation Methods 0.000 abstract description 3
- 238000012546 transfer Methods 0.000 description 10
- 238000002474 experimental method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000003416 augmentation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention provides a kind of heat pipes, including lower collector pipe, upper header, tedge and return pipe, the tedge is connected with lower collector pipe and upper header, the lower collector pipe is evaporation ends, the condensation end includes at least part of upper header and tedge, and the fluid is in lower collector pipe interior suction thermal evaporation, after at least part of tedge and upper header are exchanged heat, it is condensed in upper header, the fluid of condensation returns to lower collector pipe by return pipe；From the middle part of the upper header to the both ends of upper header, the cross-sectional area of upper header is gradually increased.From the middle to both ends by upper header, cross section is increasing by the present invention, heat exchanging fluid can be distributed to both ends, guarantee whole upper header heat exchange uniformly, avoid the heat of upper header and its temperature distribution is non-uniform, to extend the service life of heat pipe.
Description
Technical field
The invention belongs to heat pipe field more particularly to a kind of heat exchange heat pipes.
Background technique
Hot pipe technique is George Ge Luofo of U.S. Los Alamos (Los Alamos) National Laboratory in 1963
One kind of (George Grover) invention is known as the heat transfer element of " heat pipe ", it takes full advantage of heat-conduction principle and phase transformation is situated between
The heat of thermal objects is transmitted to outside heat source rapidly by the quick thermal transport property of matter through heat pipe, and the capacity of heat transmission is more than to appoint
The capacity of heat transmission of what known metal.
The industries such as aerospace, military project were widely used in front of hot pipe technique, since being introduced into radiator manufacturing, so that
People change the mentality of designing of traditional heat sinks, get rid of the list for obtaining more preferable heat dissipation effect by high air quantity motor merely
One radiating mode makes radiator obtain satisfied heat transfer effect using hot pipe technique, opens heat dissipation industry new world.At present
Heat pipe is widely used in various heat exchange equipments, including nuclear power field, such as the UTILIZATION OF VESIDUAL HEAT IN of nuclear power etc..
The loop circuit heat pipe of current heat pipe, especially multi-pipeline, top condenser pipe is kept with horizontal plane in the design
Identical height, as shown in Figure 1, such design causes heat exchanging fluid in the middle part of upper header middle part heat exchange amount can be caused big more than both ends,
Both ends heat exchange amount is small, causes heat exchange uneven, greatly affects the efficiency of heat exchange, affect the service life of heat pipe.
In view of the above-mentioned problems, the present invention is improved on the basis of invention in front, a kind of new heat pipe is provided, from
And solve the problems, such as that the coefficient of heat transfer in the case where heat pipe heat exchanging is low and its heat exchange is non-uniform.
Summary of the invention
The present invention provides a kind of new heat pipes, to solve the technical issues of front occurs.
To achieve the goals above, technical scheme is as follows：
A kind of heat pipe, including lower collector pipe, upper header, tedge and return pipe, the tedge and lower collector pipe and upper header
It is connected, the lower collector pipe is evaporation ends, and the condensation end includes at least part of upper header and tedge, the fluid
It is condensed in upper header after at least part of tedge and upper header are exchanged heat in lower collector pipe interior suction thermal evaporation, it is cold
Solidifying fluid returns to lower collector pipe by return pipe；The both ends of return pipe the connection upper header and lower collector pipe, from the upper collection
The middle part of pipe is gradually increased to the both ends of upper header, the cross-sectional area of upper header.
Preferably, the top tube wall or lower part tube wall of upper header are parabolic structure.
Preferably, the top wall surface of upper header is horizontal plane, the lower part wall surface of upper header is bending or bending structure.
Preferably, from the middle position of upper header lower part tube wall to the lower part tube wall both ends be linear structure.
Preferably, the angle formed between upper header lower part tube wall both ends and the line at midpoint is 160-170 °.
Preferably, tedge is endless tube, the endless tube is one or more, and each endless tube includes arc-shaped more
Heat exchanger tube, the end connection of adjacent heat exchange tubes, makes more heat exchanger tubes form cascaded structure, and the end of heat exchanger tube is formed
Heat exchanger tube free end.
Preferably, the center line of more arc-shaped heat exchanger tubes is the circular arc of concentric circles.
Preferably, the position of return pipe connection lower collector pipe and the both side ends of upper header.
Preferably, the concentric circles is using the center of the cross section of upper header as the circle in the center of circle.
Preferably, the caliber of the lower collector pipe is less than the caliber of upper header.
Preferably, the internal diameter of lower collector pipe is R1, the internal diameter of upper header is R2, then 0.45<R1/R2<0.88.
Preferably, the endless tube be it is multiple, the multiple endless tube be parallel-connection structure.
Preferably, the distance between adjacent heat exchange tubes are increasing as the center apart from lower collector pipe is remoter.
Preferably, the internal diameter of lower collector pipe is R1, the internal diameter of upper header is R2, and the outer diameter of heat exchanger tube is D, adjacent heat exchange tubes
The distance of center line be L, meet following relationship：
10*c*（R1/R2）=a-b*Ln (5*D/L), wherein Ln is logarithmic function, and a, b are coefficients, and c is correction factor；
F is the angle that lower part tube wall is formed from end to intermediate connection, is 160-170 °；
Top tube wall is horizontal structure, and lower part tube wall is incline structure, c=d/sin (f/2), wherein 1.012<d<1.033;
Preferably, d increases with the increase of f；
Wherein 17.03<a<18.12,9.15<b<10.11；
55mm<R1<100mm；95mm<R2<145mm；
25mm<D<80mm；40mm<L<120mm；
0.45<R1/R2<0.88；
0.5<D/L<0.7。
Preferably, a=17.54, b=9.68.
Compared with prior art, plate heat exchanger of the invention and its heat exchange tube wall have the following advantages：
1）From the middle to both ends by upper header, cross section is increasing by the present invention, so that area is small in the middle part of collector, both ends
Area is big, and middle part is heated more, therefore fluid distrbution is more, can be distributed middle part fluid to both ends, guarantee whole through the invention
Upper header heat exchange uniformly, avoid the heat of upper header and its temperature distribution is non-uniform, to extend the service life of heat pipe.
2）The present invention forms incline structure from middle part to both ends by upper header lower wall surface, so that condensed liquid
End can be quickly flowed to, to can guarantee that condensed fluid quickly flows out to evaporation tube by return line flow, is improved
Heat exchange efficiency and its uniformity of heat exchange.
3）Present invention firstly provides the heat pipe structures of annular tube type, also, by setting endless tube, meeting after heat exchanging fluid is heated
Volume expansion is generated, induction endless tube free end generates vibration.So that surrounding fluid forms further flow-disturbing, further strengthen
Heat transfer.
4）The distance change of center line of the present invention to the pipe diameter size and tube spacing of endless tube heat exchanger tube apart from lower collector pipe
Setting, further improve the heat transfer effect of heat pipe.
5）The present invention optimizes the best relation of the parameter of heat pipe, to further increase heat exchange by largely testing
Efficiency.
Detailed description of the invention
Fig. 1 is the heat-pipe apparatus front schematic view of background technique.
Fig. 2 is the heat-pipe apparatus front schematic view of the preferred embodiment of the present invention.
Fig. 3 is preferred embodiment of the present invention heat-pipe apparatus front schematic view.
Fig. 4 is the Section A-A view in Fig. 2 or 3.
Fig. 5 is the scale diagrams of Fig. 4 structure.
In figure：1, lower collector pipe, 2, upper header, 2-1, upper header lower part tube wall, 2-2 upper header top tube wall, 3, tedge,
4, heat exchanger tube, 5, return pipe, 6, free end, 7, free end.
Specific embodiment
Specific embodiments of the present invention will be described in detail with reference to the accompanying drawing.
Herein, if without specified otherwise, it is related to formula, "/" indicates that division, "×", " * " indicate multiplication.
A kind of heat pipe as shown in Figure 2, including lower collector pipe 1, upper header 2, tedge 3 and return pipe 5, the tedge 2
It is connected with lower collector pipe 1 and upper header 2, the lower collector pipe 1 is evaporation ends, and the condensation end includes upper header 2 and tedge 3
At least part, the fluid carries out by least part and upper header 2 of tedge 3 in 1 interior suction thermal evaporation of lower collector pipe
It after heat exchange, is condensed in upper header 1, the fluid of condensation returns to lower collector pipe 1 by return pipe 5；As shown in Fig. 2, from described upper
The middle part of collector 2（That is point F）To the both ends of upper header 1（That is point G, H）, the cross-sectional area of upper header 2 gradually increases.
From the middle to both ends by upper header 2, cross section is increasing by the present invention, so that area is small in the middle part of collector, both ends
Area is big, and middle part is heated more, therefore fluid distrbution is more, can be distributed middle part fluid to both ends, guarantee whole through the invention
Upper header heat exchange uniformly, avoid the heat of upper header 2 and its temperature distribution is non-uniform, to extend the service life of heat pipe.
It is found through experiments that, takes above-mentioned technical solution, compared with the technical solution of Fig. 1, can be improved 10-14%
Heat exchange efficiency.
Preferably, the top tube wall 2-1 and/or lower part tube wall 2-2 of upper header 2 are parabolic structure（That is in Fig. 2
The line that this 3 points of GFH are constituted is parabola）.The parabolical minimum point or highest point are top tube wall 2-2 or lower tube
The midpoint of wall 2-1.
By the way that parabolic structure is arranged, the uniformity of fluid heat transfer distribution can be further increased.
Preferably, the lower part wall surface 2-2 of upper header 2 is curved as shown in figure 3, the top wall surface of upper header 2 is horizontal plane
Bent or bending structure.
Preferably, from the middle position of 2 lower part tube wall 2-2 of upper header to the lower part tube wall 2-2 both ends be linear structure.
Preferably, the angle formed between upper header lower part tube wall both ends and the line at midpoint is 160-170 °.
As shown in Figure 2,3, the middle position F of the lower part tube wall 2-1 of the upper header 2 is higher than the lower part tube wall of upper header
The both ends G and H of 2-1.
The present invention forms incline structure from middle part to both ends by setting upper header, so that condensed liquid can
End quickly is flowed to, to can guarantee that condensed fluid quickly flows out to evaporation tube by return line flow, improves heat exchange
Efficiency and its uniformity of heat exchange.
Preferably, as shown in Fig. 2, from the middle position of 2 lower part tube wall 2-1 of upper header to the lower part tube wall 2-1 two
End is linear structure.
Preferably, the angle f formed between the tube wall of upper header lower part is 160-170 degree.It is found through experiments that, angle f
Cannot be excessive, can not be too small, excessive to cause lower part tube wall 2-1 gradient too big, condensed liquid does not have enough time participating in
Sensible heat transfer just flows into lower collector pipe.Similarly, if it is too small, cause reflowing result bad.
Preferably, as shown in figure 3, upper header top tube wall 2-2 height is identical.In Fig. 2, top tube wall 2-1 and
Lower part tube wall 2-2 is to take the shape tilted down from centre, and Fig. 3 takes new structure type, and top tube wall 2-2 is adopted
Flat shape is taken, is not tilted shape, takes the structure of Fig. 3, so that upper header is from the middle to both ends, cross section is increasing,
Heat exchanging fluid can be distributed to both ends, guarantee whole upper header heat exchange uniformly, avoid the heat and its temperature point of upper header
Cloth is uneven, to extend the service life of heat pipe.
Preferably, tedge 3 is endless tube 3, the endless tube 3 is one or more, and each endless tube 3 includes arc-shaped
More heat exchanger tubes 4, the end connection of adjacent heat exchange tubes 4, make more heat exchanger tubes 4 form cascaded structure, and make heat exchanger tube 4
End forms 4 free end of heat exchanger tube.
Preferably, endless tube 3 is one or more, for example, Fig. 1 illustrates multiple endless tubes 3.
As shown in Fig. 2, upper header 2 is located at the top of lower collector pipe 1.
As shown in figure 4, each endless tube 3 includes more arc-shaped heat exchanger tubes 4, the end of adjacent heat exchange tubes 4 is connected to, makes more
Root heat exchanger tube 4 forms cascaded structure, and the end of heat exchanger tube 4 is made to form heat exchanger tube free end 6,7.
Heat pipe exchanges heat when being worked, through upper header 2 and endless tube 3 with other fluids.Other fluids can be with
Only a part with endless tube 3 exchanges heat, such as the part of the endless tube 3 connecting with lower collector pipe 1 in Fig. 4 is not involved in heat exchange.
Preferably, being not involved in the part of heat exchange is insulation end.I.e. heat pipe includes evaporation ends, condensation end and insulation at this time
End, wherein evaporation ends are lower collector pipes 1, and insulation end is a part for the endless tube 3 connecting with lower collector pipe 1, and rest part is condensation end.
Preferably, only regarding lower collector pipe 1 as evaporation ends, upper header 2 and endless tube are not insulated end as condensation end.
The present invention provides a kind of heat pipes of new structure can generate volume after heat exchanging fluid is heated by the way that endless tube is arranged
Expansion, so that steam is formed, and the volume of steam is far longer than water, therefore the steam formed can carry out quick washing in endless tube
The flowing of formula.Because of volume expansion and the flowing of steam, 1 free end 6,7 of endless tube can be induced to generate vibration, heat exchanger tube is free
The vibration is transferred to heat exchanging fluid around during vibration by end 6,7, and fluid can also generate disturbance between each other, to make
Heat exchanging fluid around obtaining forms flow-disturbing, boundary layer is destroyed, to realize the purpose of augmentation of heat transfer.
It is found through experiments that, the heat pipe for being constantly in static condition compared with the existing technology, heat exchange efficiency improves 25-
35%.
Preferably, the lower collector pipe 1, upper header 2 and endless tube 3 are all circular tube structures.
Preferably, return pipe 5 connects the position of the both side ends of lower collector pipe 1 and upper header 2.Guarantee fluid upper in this way
Flow path in collector 2 is long, can further increase heat-exchange time, improves heat exchange efficiency.
Preferably, heat exchanger tube 4 is elastic heat exchanger tube.Elastic heat exchanger tube is arranged in heat exchanger tube 4, can be further increased certainly
By the flow-disturbing held, the coefficient of heat transfer can be further improved.
Preferably, the center line of more arc-shaped heat exchanger tubes 4 is the circular arc of concentric circles.
Preferably, the concentric circles is using the center of upper header 2 as the circle in the center of circle.I.e. the heat exchanger tube 4 of endless tube 3 around
The center line of upper header 2 is arranged.
As shown in figure 4, heat exchanger tube 4 not instead of one is completely justified, an oral area is reserved, to form oneself of heat exchanger tube
By holding.Angle where the circular arc of the oral area is 70-120 degree, i.e. the sum of Fig. 5 angle b and c is 70-120 degree.
Preferably, the caliber of the lower collector pipe 1 is less than the caliber of upper header 2.
The internal diameter of lower collector pipe is R1, and the internal diameter of upper header is R2, as preferably then 0.45<R1/R2<0.88.
By above-mentioned setting, can further augmentation of heat transfer, improve the heat exchange efficiency of 8-15%.
Preferably, the distance between adjacent heat exchange tubes 4 are increasing as the center apart from upper header 2 is remoter.Such as
As shown in Fig. 2, along upper header 2 center be the center of circle radial direction, the distance between heat exchanger tube BC be greater than AB between away from
From the distance between heat exchanger tube CD is greater than the distance between BC.
Preferably, the increasing amplitude of the distance between adjacent heat exchange tubes 4 constantly increases.
It is preferably provided with by above-mentioned, can be further improved heat exchange efficiency, increase the uniformity of the heat distribution of heat exchange.
It is found through experiments that, the heat exchange efficiency of 8-12% can be improved by above-mentioned setting.
Preferably, the diameter of heat exchanger tube 4 is increasing as the center apart from upper header 2 is remoter.
Preferably, the increasing amplitude of the diameter of heat exchanger tube 4 constantly increases.
It is preferably provided with by above-mentioned, can be further improved heat exchange efficiency, increase the uniformity of heat exchange.It is sent out by experiment
It is existing, 10% or so heat exchange efficiency can be improved by above-mentioned setting.
Preferably, as shown in Figure 2,3, the endless tube 4 be it is multiple, the multiple endless tube 4 be parallel-connection structure.
In experiments it is found that the distance between lower collector pipe 1, upper header 2 and heat exchanger tube 4 relationship can exchange the thermal efficiency with
And uniformity has an impact.If distance is excessive between heat exchanger tube 4, heat exchange efficiency is too poor, and the distance between heat exchanger tube 4 is too
Small, then the distribution of heat exchanger tube 4 is too close, also will affect heat exchange efficiency, the liquid that the pipe diameter size influence of collector and heat exchanger tube accommodates
Or the volume of steam, then the vibration of free end 6,7 can be had an impact, to influence to exchange heat.Therefore lower collector pipe 1, upper collection
The distance between the size of the caliber of pipe 2 and heat exchanger tube 4 have certain relationship.
The present invention is the optimal size relationship summed up by the test data of the heat pipe of multiple and different sizes.From heat exchange
Heat exchange amount maximum in effect is set out, and nearly 200 kinds of forms are calculated.The size relationship is as follows：
The internal diameter of lower collector pipe is R1, and the mean inside diameter of upper header is R2, and the outer diameter of heat exchanger tube is D, in adjacent heat exchange tubes
The distance of heart line is L, meets following relationship：
10*c*（R1/R2）=a-b*Ln (5*D/L), wherein Ln is logarithmic function, and a, b are coefficients, and c is correction factor, root
It is different according to different embodiment values；
F is the angle that lower part tube wall is formed from end to intermediate connection, i.e. Fig. 2, the folder formed in 3 between straight line FG and FH
Angle is 160-170 °；
For the embodiment of Fig. 3, top tube wall 2-2 is horizontal structure, and lower part tube wall is incline structure, c=d/sin (f/
2), wherein 1.012<d<1.033;Preferably, d increases with the increase of f；
Wherein 17.03<a<18.12,9.15<b<10.11；
55mm<R1<100mm；95mm<R2<145mm；
25mm<D<80mm；40mm<L<120mm；
0.45<R1/R2<0.88；Preferably 0.5-0.8, further preferably 0.59<R1/R2<0.71；
0.5<D/L<0.7；It is preferred that 0.58<D/L<0.66.
Preferably, 17.32<a<17.72,9.45<b<9.91；
Further preferably, a=17.54, b=9.68.
Preferably, the quantity of heat exchanger tube be 3-5 root, preferably 3 or 4.
Preferably, the numerical value of a constantly increases with the increase of R1/R2, the numerical value of b constantly reduces.By this
Variation, so that the structural parameters of heat pipe more optimize rationally, the data of calculating are more accurate.
The distance of 2 center line of lower collector pipe 1 and upper header is 320-380mm；Preferably 340-360mm.
Preferably, the radius of heat exchanger tube is preferably 10-40mm；Preferably 15-35mm, further preferably 20-
30mm。
If the diameter of adjacent heat exchanger tube is different, the diameter D value of heat exchanger tube is being averaged for adjacent heat exchanger tube diameter
Value.
The internal diameter R2 of upper header takes average value, the i.e. weighted average of upper header different location internal diameter.
Further preferably, the center line of same endless tube heat exchanger tube 4 is in the same plane.Preferably, the plane is hung down
The plane formed as the center line of lower collector pipe 1 and upper header 2.Preferably, what the center line of different endless tube heat exchanger tubes 4 was formed
Plane is parallel to each other.
Further preferably, the distance between adjacent endless tube 3 is 2.8-3.6 times of 4 outer dia of endless tube heat exchanger tube.Adjacent ring
The distance between pipe 3 is calculated with the distance between plane where the center line of endless tube heat exchanger tube 4.
Further preferably, if endless tube heat exchanger tube diameter is different, the average value of the diameter of the heat exchanger tube of same endless tube is taken
As the average diameter of endless tube.Such as the average value of heat pipe A-D is taken shown in Fig. 2.Then two adjacent endless tubes 3 is straight
Diameter average value calculates the distance of adjacent endless tube.
Preferably, end part aligning of the heat exchanger tube in the free end 6,7 of the same side, in the same plane, end is prolonged
Long line（Or the plane where end）By the middle line of lower collector pipe 1, as shown in Figure 3.
Preferably, as shown in figure 4, the first end of the inside heat exchanger tube of endless tube 3 is connect with upper header 2, second end and phase
Adjacent outside heat exchanger tube one end connection, one end of the outermost heat exchanger tube of endless tube 3 are connect with lower collector pipe 1, adjacent heat exchanger tube
End connection, to form a concatenated structure.
Preferably, the plane where the line at the center of lower collector pipe 1 and upper header 2 is vertical direction.
As shown in figure 5, the folder that the plane where first end 6 is formed with the plane where 2 center line of lower collector pipe 1 and upper header
Angle c is 40-65 degree.
The angle b that the plane where plane and 2 center line of lower collector pipe 1 and upper header where second end 7 is formed is 55-
65 degree.
By the design of above-mentioned preferred angle, so that the vibration of free end reaches most preferably, so that heat exchange efficiency reaches
To optimal.
As shown in figure 4, the heat exchanger tube 4 of endless tube is 4, heat exchanger tube A, B, C, D connection.Certainly, four are not limited to, it can be with
It is set as needed multiple, specific connection structure is identical as Fig. 2.
The endless tube 3 be it is multiple, multiple floating endless tubes 1 independently connect lower collector pipe 1 and upper header 2, i.e., multiple floatings
Endless tube 1 is parallel-connection structure.
Although the present invention has been disclosed in the preferred embodiments as above, present invention is not limited to this.Any art technology
Personnel can make various changes or modifications, therefore protection scope of the present invention is answered without departing from the spirit and scope of the present invention
When being defined by the scope defined by the claims..
Claims (4)
1. a kind of heat pipe, including lower collector pipe, upper header, tedge and return pipe, the tedge and lower collector pipe and upper header phase
Connection, the lower collector pipe is evaporation ends, and condensation end includes at least part of upper header and tedge, and fluid is in lower collector pipe
Heat absorption evaporation, after at least part of tedge and upper header are exchanged heat, condenses in upper header, and the fluid of condensation is logical
It crosses return pipe and returns to lower collector pipe；The both ends of return pipe the connection upper header and lower collector pipe, which is characterized in that from the upper collection
The middle part of pipe is gradually increased to the both ends of upper header, the cross-sectional area of upper header；
Tedge is endless tube, and the endless tube is one or more, and each endless tube includes more arc-shaped heat exchanger tubes, adjacent to change
The end of heat pipe is connected to, and more heat exchanger tubes is made to form cascaded structure, and the end of heat exchanger tube is made to form heat exchanger tube free end；
The center line of more arc-shaped heat exchanger tubes is the circular arc of concentric circles；
The concentric circles is using the center of the cross section of upper header as the circle in the center of circle；
The internal diameter of lower collector pipe is R1, and the internal diameter of upper header is R2, and the outer diameter of heat exchanger tube is D, the center line of adjacent heat exchange tubes away from
From being L, meet following relationship：
10*c*（R1/R2）=a-b*Ln (5*D/L), wherein Ln is logarithmic function, and a, b are coefficients, and c is correction factor；
F is the angle that lower part tube wall is formed from end to intermediate connection, is 160-170 °；
Top tube wall is horizontal structure, and lower part tube wall is incline structure, c=d/sin (f/2), wherein 1.012<d<1.033;Make
To be preferred, d increases with the increase of f；
Wherein 17.03<a<18.12,9.15<b<10.11；
55mm<R1<100mm；95mm<R2<145mm；
25mm<D<80mm；40mm<L<120mm；
0.45<R1/R2<0.88；
0.5<D/L<0.7。
2. heat pipe as described in claim 1, which is characterized in that the top tube wall or lower part tube wall of upper header are parabolic knot
Structure.
3. heat pipe as described in claim 1, which is characterized in that the top wall surface of upper header is horizontal plane, the lower part of upper header
Wall surface is bending or bending structure.
4. heat pipe as claimed in claim 3, which is characterized in that from the middle position of upper header lower part tube wall tube wall to the lower part
Both ends are linear structure.
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| CN201710203455.7A CN106871676B (en) | 2017-03-30 | 2017-03-30 | The heat pipe of upper header sectional area variation |
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| CN201710203455.7A CN106871676B (en) | 2017-03-30 | 2017-03-30 | The heat pipe of upper header sectional area variation |
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| CN111504099B (en) * | 2017-08-03 | 2021-02-09 | 山东大学 | Rod-fin loop heat pipe with size-variable flow stabilizer |
| CN113701533B (en) * | 2019-04-23 | 2022-07-01 | 山东大学 | Mirror symmetry loop heat pipe design method |
| CN113465426B (en) * | 2019-04-23 | 2022-04-26 | 山东大学 | Rotationally symmetrical loop heat pipe with reduced pipe diameter |
| CN111998704B (en) * | 2019-05-27 | 2022-02-01 | 山东大学 | Vibration method of mirror-symmetric loop heat pipe |
| CN111998705B (en) * | 2019-05-27 | 2022-03-29 | 山东大学 | Rotationally symmetric circulating heat source loop heat pipe |
| CN112146494B (en) * | 2019-06-28 | 2022-02-11 | 山东大学 | Rotational symmetry's control by temperature change vibration loop heat pipe |
| CN112146493B (en) * | 2019-06-28 | 2022-02-11 | 山东大学 | Mirror symmetry's water accuse vibration loop heat pipe |
| CN112298440A (en) * | 2020-10-10 | 2021-02-02 | 传孚科技（厦门）有限公司 | Novel pneumatic power-assisted vehicle and control method thereof |
| CN115524885B (en) | 2022-08-24 | 2024-04-12 | 惠科股份有限公司 | Display device and backlight module thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1221104A (en) * | 1997-12-22 | 1999-06-30 | 吴鸿平 | I-shaped circulating heat pipe |
| CN2438083Y (en) * | 2000-06-13 | 2001-07-04 | 侯长荣 | Fin vacuum phase change heat sink |
| JP2006105430A (en) * | 2004-10-01 | 2006-04-20 | Toshiba Mitsubishi-Electric Industrial System Corp | Soaking device |
| CN101832725A (en) * | 2010-05-25 | 2010-09-15 | 滁州扬子热能设备科技有限公司 | 20 DEG C-gasification vacuum superconductive radiator |
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