CN206847443U

CN206847443U - A kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe

Info

Publication number: CN206847443U
Application number: CN201720461772.4U
Authority: CN
Inventors: 夏侯国伟
Original assignee: Changsha University of Science and Technology
Current assignee: Changsha University of Science and Technology
Priority date: 2017-04-27
Filing date: 2017-04-27
Publication date: 2018-01-05
Anticipated expiration: 2027-04-27

Abstract

A kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe, the reducing series and parallel conduit plate type pulsating heat pipe include hot junction, cold end, intermediate, end socket, it is characterised in that：The hot junction is the rectangular flat of internal uniform isometrical hot junction passage；The cold end is the rectangular flat of internal uniform isometrical cold end passage；The equivalent diameter of the cold end passage is 1 10 times of hot junction passage equivalent diameter；The hot junction is connected with cold end by the intermediate, and the cold end axis and the hot junction axis are in 5 90 degree of angles.The utility model content has obvious innovation to change from structure and heat transfer mechanism, effectual and conjunction symbol physics theory.The utility model has regarded comprehensive satisfaction as from high heat flux component radiating principles and requirements.Its application on high heat flux component will contribute to the cooling of these devices, to promoting electronics, microelectronics, photoelectron element and its progress in corresponding field to have positive impetus.

Description

A kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe

Technical field

The utility model discloses a kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe, belong to heat transfer enhancement technology Field.

Background technology

Now, integrate, be efficient, miniaturization electronics, microelectronics, photoelectron element are widely used to various daily lifes Production, lifestyle device, the significant increase production efficiency and quality of the life of people, process one are sent out and can not stopped.However, this kind of device It is integrated, efficiently, miniaturization evolution while all suffer from same obstacle --- high heat flux, according to investigations this kind of member at present The heat flow density of device is generally near or above 100W/cm², even more than 200W/cm individually²。

High heat flux will generally cause component operating temperature too high.

It is well known that the service behaviour and temperature relation of electronics, microelectronics, opto-electronic device are close, temperature gets over high-performance It is lower.Such every liter of 1 DEG C of its service behaviour of component temperature will decline 0.4~0.5%, and electronic product fault rate according to statistics 55% comes from overtemperature.Therefore, each component, which has, allows operating temperature as defined in it, for example, IC chip is 85 DEG C, T/R components Junction temperature is 125 DEG C, and LED junction temperature is 130 DEG C, and overtemperature gently then influences performance, heavy then cause to burn.

Further, since the otherness of each component structure and production hotspot's distribution, in practice component surface temperature distribution one As it is also uneven, therefore in some cases, even if component mean temperature meets the requirement for allowing operating temperature, also due to warm There is high temperature and causes to damage in the uneven part of degree.

To ensure the work of the stability and high efficiency of component, it is necessary that it meets the bar of permission operating temperature and samming all the time Part, it means that to it must well and effectively radiate.

By installation site, operating temperature and uniform temperature etc. is allowed to limit, component radiating must is fulfilled for：Planar heat transfer, biography The principle that hot property is excellent, uniform temperature is good, floor space is small, area of dissipation is big, simple and reliable.

Pulsating heat pipe meets that the pulsation conduit of Bo numbers (Bond number) is formed by internal equivalent diameter, and working medium is in the channel with air-liquid Plug form exists at random, and a kind of compound movement occurs in working medium under pressure difference promotion during work：Hot junction vaporization working medium flows to cold end, puts Flow back cold end after heat condensation under gravity and capillary force effect, reciprocation cycle, along with the random production of air-liquid plug on circulating path Life forms strong disturbance so as to enhance heat transfer with burying in oblivion.This working characteristics causes the heat-transfer capability of pulsating heat pipe to outclass With the conventional heat pipe of diameter.Plate type pulsating heat pipe is a kind of flat-plate heat pipe for including series pulsation conduit, both with natural suction Hot plane has the strong heat-transfer capability of pulsating heat pipe again.According to the channel structure of inside, plate type pulsating heat pipe can be divided into single loop Plate type pulsating heat pipe and shunt slot road plate type pulsating heat pipe.Research shows that shunt slot road has the characteristics of short conduit, working medium same sex, The working medium resistance of motion is smaller, and the thermodynamic state of interchannel working medium and the uniformity of flow direction are more preferable, makes it in heat pipe startup, passes It is all more more superior than single loop in thermal resistance and uniform temperature, therefore shunt slot road plate type pulsating heat pipe is more suitable for high heat flux member The cooling of device.

In recent years, scientific research personnel is the cooling for solving the problems, such as high heat flux component, be have developed a variety of with simultaneously Join the plate type pulsating heat pipe of conduit.But in terms of the situation from research with application, the shunt slot road plate type pulsating heat pipe researched and developed shows And it is bad, still have several drawbacks, therefore how scientific and effective solution component radiating is still a problem, the Resolving probiems The bad development that will have a strong impact on above-mentioned field, thus the research and development to the problem just seem it is very necessary with it is urgent.

Now the Patents applied at present and academic research situation are summarized as follows.

Chinese patent 201010279816.4 proposes a kind of Multi-channel parallel connection loop pulsating heat pipe, and the heat pipe is flat by two The isometric collection connecting leg of row and it is normal thereto be welded some communicating pipes, its caliber meets pulsation and required, forms a kind of parallel connection Conduit plate type pulsating heat pipe, there is very strong boiler ability.Document 1《Inclination angle and cooling operating mode are to multi-path shunt circuit The influence of plate type pulsating heat pipe heat transfer property》(Journal of Chemical Industry and Engineering, the 2nd phase of volume 65, page 532~537) display, red copper material heat pipe In hot-side temperature control in the case of 80 DEG C, its maximum heat flow density is 54.3W/cm², less than high heat flux component Heat flow density basic value, it is impossible to meet the needs of high heat flux component radiating.In addition, the document shows in cooling water flow Under the conditions of 9.0g/s, heating power 149W, acetone working medium, radially deviate the wide measuring point of axis a quarter plate for two in hot junction On to measure the temperature difference be about 5 DEG C, it is pointed out that this temperature difference can not represent temperature difference peak, reflect the heat pipe uniform temperature not It is good.Chinese patent 201110074375.9 proposes a kind of double-sided channel plate-type pulsating heat pipe with conduit in parallel, the heat pipe Formed by the inserting periodicity folded plate closing of board-like hollow housing, its folded plate folding rib forms a plurality of pulsation conduit with inner walls.Fortune Working medium enhances heat transfer in conduit in random high frequency impact flowing during row, and profile is that object contact is easy to and radiated to flat board, Stronger heat-sinking capability is adapted to the cooling of electronic component.But document 2《The experiment of flat board pulsating heat pipe heat transfer property Research》(Guangdong chemical industry, the 272nd phase of volume 41, page 145~146,165) experimental studies have found that, when hot-side temperature control exists When near 80 DEG C, its heat flow density that can be born only has 40W/cm², from 100W/cm²Heat flow density there is a big difference.It is Chinese special Profit 201110074384.8 proposes a kind of pulsation of the single-face corrugated plate type with conduit in parallel for electronic component cooling Heat pipe, the rectangular bottom plate of the heat pipe and wave-shape board are bonded to form series pulsation conduit, then close both ends by UNICOM's chamber again Form plate type pulsating heat pipe.Wave-shape board had both increased the contact area with air, and and can makes air produce disturbance, so as to strengthen sky The heat convection of gas side.The motion of inside heat pipe working medium is similar to foregoing ZL201110074375.9 to Heat transfer, in pipe There is very strong heat-transfer capability.Document 3《Flat-plate heat pipe heat transfer property based on air conditioner energy recovery》(Central South University's journal, the 46th Rolled up for the 1st phase, page 317~323) to single-face corrugated plate pulsating heat pipe carry out experimental study show, when hot-side temperature control exist Under 80 DEG C and air blast cooling, the heat flow density of heat pipe transmission is about 62.64W/cm², hot junction maximum temperature difference is 5.7 DEG C, with 100W/cm²Still have quite poor away from, it is clear that can not solve the heat dissipation problem of component well, while the document is also shown that Heat pipe cold end under relatively low heating power occurs that condensate liquid blocks the problem of not flowing back, and causes hot-side temperature to be substantially increased cold end Temperature declines to a great extent, so as to which properties of hot pipe be greatly reduced.

The above situation shows that even if, using the shunt slot road pulsating heat pipe of good heat dissipation effect, actual radiating effect is still It is unevident.It is contemplated that it is following as the quick raising of component performance, its radiating requirements will be more harsh, it follows that Want to realize the good heat radiating to high heat flux component, it is necessary to pulse to existing shunt slot road on structure and working principle Heat pipe, which more integrates more thoroughly to improve, could realize breakthrough.

Therefore, inventor has made intensive studies to existing shunt slot road pulsating heat pipe from principles and structure with dividing Analysis, it is found that there are the following problems and deficiency.1st, passage equivalent diameter of pulsing keeps constant, and cold end has stronger in the case Capillarity Working fluid flow is deteriorated, and when starting and low heating power, working medium, which is particularly susceptible, blocks, and causes：1. heat pipe is not Can smoothly start, 2. working medium backflow difficulty can not establish good circulation, so as to cause heat pipe operation irregularity and heat-transfer capability to decline. 2nd, every pulsation passage is all to close autonomous channel, and the working medium in passage can not carry out interchannel according to operating mode difference and change Material exchange so that：1. the radial temperature difference of interchannel removes difficulties, cause hot junction uniform temperature bad；2. interchannel is without effective Horizontal UNICOM, weaken heat convection ability in pipe.3rd, conventional parallel conduit plate type pulsating heat pipe is monolithic type heat pipe, is radiated Area limits its heat-sinking capability can not possibly be very big, it is difficult to meets the cooling of high performance components.4th, by work must be realized by gravity The constraint that matter smoothly flows back, the inconvenience of conventional parallel conduit plate type pulsating heat pipe are solved to be horizontally mounted component cooling, used Scope is limited.

Utility model content

The purpose of this utility model is the deficiency for overcoming prior art, it is proposed that one kind has " planar heat transfer, conductivity of heat Can it is excellent, uniform temperature is good, floor space is small, area of dissipation is big, simple and reliable " the horizontal board-like pulsation of reducing series and parallel conduit Heat pipe, for the cooling of high heat flux component, for the further development of electronics, microelectronics, optoelectronic areas technology Power-assisted is provided.

A kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe of the utility model, is realized by following proposal：

A kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe, the reducing series and parallel conduit plate type pulsating heat pipe bag Include hot junction 1, cold end 2, intermediate 3, end socket 4, it is characterised in that：The hot junction 1 is the rectangle of internal uniform isometrical hot junction passage 5 Flat board；The cold end 2 is the rectangular flat of internal uniform isometrical cold end passage 6；The equivalent diameter of the cold end passage 6 is hot junction 1-10 times of the equivalent diameter of passage 5；The hot junction 1 is connected with cold end 2 by the intermediate 3, the axis of cold end 2 with it is described Hot junction axis is in 5-90 ° of angle.

A kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe of the utility model, adjacent hot junction passage 5 in hot junction 1 The partition that partition is provided with adjacent cold ends passage 6 in balance pipe 8 and/or cold end 2 is provided with balance pipe 9.For interchannel material Exchange.

A kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe of the utility model, the one end of hot junction 1 are connected with intermediate 3, The other end is provided with end socket 4, hot junction passage 5 uniform in hot junction 1 is formed parallel-connection structure；One end of at least one cold end 2 is with Mesosome 3 connects, and the other end of cold end 2 is provided with end socket 4, cold end passage 6 uniform in cold end 2 is formed parallel-connection structure.

A kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe of the utility model, the both ends of hot junction 1 respectively with an intermediate 3 one end is connected, and hot junction passage 5 uniform in hot junction 1 is formed parallel-connection structure；The other end of each intermediate 3 is at least connected with One cold end 2, the other end of cold end 2 are provided with end socket 4, cold end passage 6 uniform in cold end 2 is formed parallel-connection structure.

A kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe of the utility model, is connected between hot junction 1 and cold end 2 Intermediate 3 be provided with a hybrid chamber 10.

A kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe of the utility model, the hybrid chamber that the intermediate 3 is set 10 length is f：3mm≤f≤100mm.

A kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe of the utility model, the length and width in the hot junction 1 can Determined with reference to cooling object size, but must be able to fully covering cooling object；The length of cool and heat ends refers to the hot junction 1 And the cold end 2 internally length on passage axial direction, the hot junction 1 is equal with the width of the cold end 2, the hot end length With the total length of the cold end 2 the ratio between be 0.1~1.0, preferably 0.2~0.67.

A kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe of the utility model, the equivalent diameter of the hot junction passage 5 For 0.5~5mm, the equivalent diameter of the cold end passage 6 is 1~6mm；Meet Bo number requirements, working medium can be formed by force in passage Strong boiler effect.

A kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe of the utility model, in hot junction 1, between hot junction passage 5 Balance pipe 8 is set by pitch a on wall, pitch a scope is：5mm≤a≤100mm；In cold end 2, in the partition of cold end passage 6 Upper to set balance pipe 9 by pitch d, pitch d scope is：5mm≤d≤200mm；The equivalent diameter of hot junction balance pipe 8 be 0.5~ 3.0mm；The equivalent diameter of cold end balance pipe 9 is 0.8~4.5mm.

A kind of the utility model horizontal reducing series and parallel conduit plate type pulsating heat pipe, passage 5, cold end passage 6 in hot junction The axis of the balance pipe set in adjacent partitions overlaps or dislocation.

A kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe of the utility model, the rectangular flat of the cold end 2 is extremely A few surface is provided with radiating fin 7.

The shape of cross section of the hot junction 1 and the cold end 2 is parallelogram.

The shape of cross section of the hot junction passage 5 and cold end passage 6 can be parallelogram, triangle, circle, ellipse, ladder Shape, one kind of polygon.

The angle of the positive axial line of the cold end 2 and the axial extension cord in homonymy hot junction 1 is inclined angle alpha, 5 °≤α≤90 °, To ensure that cold end 2 is located on hot junction 1；Along the axis of the intermediate 3 to cold end move when its track have to last for upwards, with Ensure that condensation working medium can smoothly flow back without being detained.

Metal material used in the horizontal reducing series and parallel conduit plate type pulsating heat pipe is selected from carbon steel, stainless steel, aluminium and closed One kind in gold, copper alloy.

The working medium of the horizontal reducing series and parallel conduit plate type pulsating heat pipe be selected from deionized-distilled water, ethanol, acetone, One kind or its mixture in ammoniacal liquor, methanol, R141b.

Technique effect of the present utility model

The utility model proposes horizontal reducing series and parallel conduit plate type pulsating heat pipe be applied to high heat flux electronics, The cooling of microelectronics, photoelectron element, there is advantages below and effect.

The horizontal reducing series and parallel conduit plate type pulsating heat pipe is by hot junction, cold end, intermediate, end socket and the part of working medium 5 Composition, wherein：1. hot junction and cold end set uniform isometrical pulsation conduit to be interior, conduit radial direction partition is provided with the flat of balance pipe by pitch Plate；2. intermediate is the cool and heat ends connector provided with accessible headroom hybrid chamber；3. end socket is the heat pipe end with certain space Portion's closure member.By its working medium motion conditions of heat pipe that above-mentioned 5 part forms compared with prior art will great changes have taken place, while opposite heat tube Internal diabatic process generates actively impact, can significantly improve the heat transfer property and average temperature performance of heat pipe, basic condition is as follows It is described：1. cool and heat ends reducing and its effect, reducing is exactly specifically the appropriate equivalent diameter for increasing cold end, changes hot and cold side and works as Measure diameter ratio.Working medium is allowed to occur the very strong pulse state of heat-transfer capability in the channel, according to surface tension and capillary principle, Conduit caliber has to comply with the claimed range of Bo numbers, and this make it that caliber in practice is all smaller, as hot and cold side caliber can not change Become, then the cold end of lower temperature may influence Working fluid flow because of the enhancing of capillarity.Such case is in startup or low The performance of heating power stage is more prominent, and now cold junction temperature is very low, and it is bright to be influenceed Working fluid flow resistance by capillary contact angular lag Aobvious increase, so as to cause cold end working medium delay occur and block, seriously affect startup and the heat transfer cooling capacity of heat pipe.Equally According to capillarity principle, the appropriate cold end conduit equivalent diameter that increases can effectively reduce cold end capillary resistance, convenient beneficial to working medium Timely flow back, to establish working medium good circulation and improve adopting heat pipes for heat transfer ability play the role of it is very positive.2. intermediate band The benefit come, first, utilizing hybrid chamber, working medium is set to form secondary parallel connection, i.e., hot junction is in parallel and cold end is in parallel, contributes in heat pipe Material and heat and thermodynamic state it is balanced, both improved the uniform temperature and heat-sinking capability of cold end, the working medium of the uniform cold end of and can is returned Stream, to establishing the helpful facilitation of steady working condition.Two can be achieved on more cold end connections, be the increase and adjustment of area of dissipation Provide powerful approach.Third, intermediate brings a variety of changes to conventional parallel conduit plate-type heat-pipe, e.g., integral hot and cold side can Separation, continuous conduit can disconnect, and single hot junction can configure more cold ends, and horizontal hot junction can have vertical cold end, install and use and constrain To releasing, sufficient possibility is provided to improve the performance of raising shunt slot road plate type pulsating heat pipe.3. some of balance pipe is made With first, when temperature, pressure when conduit somewhere are higher, working medium can be entered adjacent balance pipe in a manner of pulse or injection Conduit, and form horizontal cascaded structure so that material, temperature between adjacent conduit more balance, and are particularly conducive to solve with disappearing Except the temperature of hot junction radial direction is uneven, second, the working medium random shock radially occurred makes intraductal heat transfer mass transfer be become by Two-Dimensional Heat mass transter For three-dimensional, intraductal heat exchange is greatly enhanced, third, adjacent conduit balance pipe can shift to install, changing misalignment can be in groove Fluid interchange is optimized and adjusted；

In summary.The utility model content has obvious innovation to change from structure and heat transfer mechanism, it is effectual and Close symbol physics theory.The utility model has regarded comprehensive satisfaction as from high heat flux component radiating principles and requirements. Its application on high heat flux component will contribute to the cooling of these devices, to promoting electronics, microelectronics, light The progress in electronic component and its corresponding field has positive impetus.

Brief description of the drawings

The unilateral single horizontal reducing series and parallel conduit plate type pulsating heat pipe front view of cold end of 1 embodiment of accompanying drawing 1.

The sectional view of the accompanying drawing 1 of accompanying drawing 2.

The hot junction sectional view of the accompanying drawing 1 of accompanying drawing 3.

The cold end sectional view of the accompanying drawing 1 of accompanying drawing 4.

I type intermediate structure figure of the accompanying drawing 1 of accompanying drawing 5.

The end enclosure structure figure of the accompanying drawing 1 of accompanying drawing 6.

The horizontal reducing series and parallel conduit plate type pulsating heat pipe front view of the unilateral double cold ends of 7 embodiment of accompanying drawing 2.

II type intermediate structure figure of the accompanying drawing 7 of accompanying drawing 8.

The horizontal reducing series and parallel conduit plate type pulsating heat pipe front view of the double cold ends of the bilateral of 9 embodiment of accompanying drawing 3.

The horizontal reducing series and parallel conduit plate type pulsating heat pipe front view of the cold end of 10 embodiment of accompanying drawing, 4 bilateral four.

In figure：1- hot junctions, 2- cold ends, 3- intermediates, 4- end sockets, 5- hot junctions passage, 6- cold ends passage, 7- radiating fins, 8- hot junctions balance pipe, 9- cold ends balance pipe, 10- hybrid chambers.

Embodiment

Each specific embodiment is illustrated below in conjunction with accompanying drawing.Embodiment be merely to illustrate the utility model rather than Limit the scope of the utility model.Those skilled in the art are made various to the utility model after reading the utility model content Modification, also belong to the restriction scope of the appended claims for the utility model book.

Embodiment one

Referring to accompanying drawing 1,2,3,4,5,6, a kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe, the reducing string, simultaneously Connection conduit plate type pulsating heat pipe includes 1 described described I type intermediate, 3,2 end socket of 1,1, the hot junction cold end 2,1 4, it is characterised in that：The hot junction 1 is the rectangular flat of internal uniform isometrical hot junction passage 5；The cold end 2 is internal uniform The rectangular flat of isometrical cold end passage 6；The equivalent diameter of the cold end passage 6 is 2.67 times of the equivalent diameter of hot junction passage 5；Institute State hot junction 1 to be connected by the intermediate 3 with cold end 2, the positive axial line of the cold end 2 and the axial extension cord in homonymy hot junction 1 Angle α=75 °.

The partition of adjacent hot junction passage 5 is provided with balance pipe 8 and cold end 2 between adjacent cold ends passage 6 in the hot junction 1 Wall is provided with balance pipe 9.Exchange for interchannel material.

Described one end of hot junction 1 is connected with intermediate 3, and the other end is provided with end socket 4, makes the shape of hot junction passage 5 uniform in hot junction 1 Into parallel-connection structure；One end of cold end 2 connects with intermediate 3, and the other end of cold end 2 is provided with end socket 4, makes in cold end 2 uniform cold Passage 6 is held to form parallel-connection structure.

The intermediate 3 being connected between hot junction 1 and cold end 2 is provided with a hybrid chamber 10.

The length f=10mm for the hybrid chamber 10 that the intermediate 3 is set.

The length and width in the hot junction 1 refers to cooling object size and determined, but must be able to fully covering cooling pair As；The length of cool and heat ends refers to the hot junction 1 and the cold end 2 length on passage axial direction internally, the hot junction 1 with The width of the cold end 2 is equal, the total length of the hot end length and the cold end 2 the ratio between be 0.67.

The equivalent diameter of the hot junction passage 5 is 1.5mm, and the equivalent diameter of the cold end passage 6 is 4.0mm；Meet Bo Number requires that working medium can form strong boiler effect in passage.

In the hot junction 1, balance pipe 8, pitch a=10mm are set by pitch a on the partition of hot junction passage 5；Cold end 2 In, balance pipe 9, pitch d=10mm are set by pitch d on the partition of cold end passage 6；The equivalent diameter of hot junction balance pipe 8 is 1.7mm；The equivalent diameter of cold end balance pipe 9 is 2.7mm.

The axis of the balance pipe set in the adjacent partitions of hot junction passage 5 and cold end passage 6 overlaps.

Two surfaces of the rectangular flat of the cold end 2 are provided with radiating fin 7.

The shape of cross section of the hot junction 1 and the cold end 2 is rectangle.

The shape of cross section of the hot junction passage 5 and cold end passage 6 is rectangle.

Metal material used in the horizontal reducing series and parallel conduit plate type pulsating heat pipe is stainless steel.

The working medium of the horizontal reducing series and parallel conduit plate type pulsating heat pipe is deionized-distilled water.

Embodiment one is the minimum form of horizontal reducing series and parallel conduit plate type pulsating heat pipe, reliable to also allow for pacifying Dress processing, the high heat flux component slightly smaller suitable for heating power.

Embodiment two

Referring to accompanying drawing 3,4,6,7,8, a kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe, the reducing series and parallel Conduit plate type pulsating heat pipe includes 1 described described II type intermediate, 3,3 end socket of 1,2, the hot junction cold end 2,1 4, it is characterised in that：The hot junction 1 is the rectangular flat of internal uniform isometrical hot junction passage 5；The cold end 2 is uniform etc. for inside The rectangular flat of footpath cold end passage 6；The equivalent diameter of the cold end passage 6 is 1.76 times of the equivalent diameter of hot junction passage 5；It is described Hot junction 1 is connected with cold end 2 by the intermediate 3, the positive axial line of the cold end 2 and the axial extension cord in homonymy hot junction 1 Angle α=85 °.

The length f=30mm for the hybrid chamber 10 that the intermediate 3 is set, is moved along the axis of the intermediate 3 to cold end When its track have to last for upwards, with ensure condensation working medium can smoothly flow back without be detained.

The length and width in the hot junction 1 refers to cooling object size and determined, but must be able to fully covering cooling pair As；The length of cool and heat ends refers to the hot junction 1 and the cold end 2 length on passage axial direction internally, the hot junction 1 with The width of the cold end 2 is equal, the total length of the hot end length and the cold end 2 the ratio between be 0.6.

The equivalent diameter of the hot junction passage 5 is 2.1mm, and the equivalent diameter of the cold end passage 6 is 3.7mm；Meet Bo Number requires that working medium can form strong boiler effect in passage.

In the hot junction 1, balance pipe 8, pitch a=15mm are set by pitch a on the partition of hot junction passage 5；Cold end 2 In, balance pipe 9, pitch d=20mm are set by pitch d on the partition of cold end passage 6；The equivalent diameter of hot junction balance pipe 8 is 2mm；The equivalent diameter of cold end balance pipe 9 is 2.3mm.

The balance pipe set in the adjacent partitions of hot junction passage 5 and cold end passage 6 misplaces b=7.5mm and e respectively =10mm.

Metal material used in the horizontal reducing series and parallel conduit plate type pulsating heat pipe is copper alloy.

The working medium of the horizontal reducing series and parallel conduit plate type pulsating heat pipe is acetone.

Embodiment two is the form of the unilateral double cold ends of horizontal reducing series and parallel conduit plate type pulsating heat pipe, and manufacture difficulty is slightly Greatly, the high heat flux component larger available for heating power.

Embodiment three

Referring to accompanying drawing 3,4,5,6,9, a kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe, the reducing series and parallel Conduit plate type pulsating heat pipe includes 1 described described I type intermediate, 3,2 end socket 4 of 1,2, the hot junction cold end 2,2, It is characterized in that：The hot junction 1 is the rectangular flat of internal uniform isometrical hot junction passage 5；The cold end 2 is internal uniform isometrical The rectangular flat of cold end passage 6；The equivalent diameter of the cold end passage 6 is 1.13 times of the equivalent diameter of hot junction passage 5；The heat End 1 is connected with cold end 2 by the intermediate 3, the folder of the positive axial line of the cold end 2 and the axial extension cord in homonymy hot junction 1 Angle α=80 °.

The one end of the both ends of hot junction 1 respectively with an intermediate 3 is connected, and hot junction passage 5 uniform in hot junction 1 is formed simultaneously It is coupled structure；The other end of each intermediate 3 is at least connected with a cold end 2, and the other end of cold end 2 is provided with end socket 4, made in cold end 2 Uniform cold end passage 6 forms parallel-connection structure.

The length f=15mm for the hybrid chamber 10 that the intermediate 3 is set.

The length and width in the hot junction 1 refers to cooling object size and determined, but must be able to fully covering cooling pair As；The length of cool and heat ends refers to the hot junction 1 and the cold end 2 length on passage axial direction internally, the hot junction 1 with The width of the cold end 2 is equal, the total length of the hot end length and the cold end 2 the ratio between be 0.4.

The equivalent diameter of the hot junction passage 5 is 3.1mm, and the equivalent diameter of the cold end passage 6 is 3.5mm；Meet Bo Number requires that working medium can form strong boiler effect in passage.

In the hot junction 1, balance pipe 8, pitch a=20mm are set by pitch a on the partition of hot junction passage 5；Cold end 2 In, balance pipe 9, pitch d=30mm are set by pitch d on the partition of cold end passage 6；The equivalent diameter of hot junction balance pipe 8 is 1.8mm；The equivalent diameter of cold end balance pipe 9 is 2.5mm.

The balance pipe set in the adjacent partitions of hot junction passage 5 and cold end passage 6 misplaces b=7.5mm and e respectively =15mm.

Metal material used in the horizontal reducing series and parallel conduit plate type pulsating heat pipe is aluminium alloy.

The working medium of the horizontal reducing series and parallel conduit plate type pulsating heat pipe is ethanol.

Embodiment three is the form of the double cold ends of horizontal reducing series and parallel conduit plate type pulsating heat pipe bilateral, and manufacture difficulty is fitted In, for cold end both sides arrangement relatively while arranging radiating condition more preferably, the high heat flux component big to heating power is empty in installation Between permit in the case of, it is proposed that the heat pipe of prioritizing selection embodiment 3.

Example IV

Referring to accompanying drawing 3,4,6,8,10, a kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe, the reducing string, simultaneously Connection conduit plate type pulsating heat pipe includes 1 described described II type intermediate, 3,4 envelope of 1,4, the hot junction cold end 2,2 First 4, it is characterised in that：The hot junction 1 is the rectangular flat of internal uniform isometrical hot junction passage 5；The cold end 2 is internal uniform The rectangular flat of isometrical cold end passage 6；The equivalent diameter of the cold end passage 6 is 1.13 times of the equivalent diameter of hot junction passage 5；Institute State hot junction 1 to be connected by the intermediate 3 with cold end 2, the positive axial line of the cold end 2 and the axial extension cord in homonymy hot junction 1 Angle α=78 °.

The length f=10mm for the hybrid chamber 10 that the intermediate 3 is set, is moved along the axis of the intermediate 3 to cold end When its track have to last for upwards, with ensure condensation working medium can smoothly flow back without be detained.

The length and width in the hot junction 1 refers to cooling object size and determined, but must be able to fully covering cooling pair As；The length of cool and heat ends refers to the hot junction 1 and the cold end 2 length on passage axial direction internally, the hot junction 1 with The width of the cold end 2 is equal, the total length of the hot end length and the cold end 2 the ratio between be 0.25.

The working medium of the horizontal reducing series and parallel conduit plate type pulsating heat pipe is methanol.

Example IV be the horizontal cold end of reducing series and parallel conduit plate type pulsating heat pipe bilateral four form, manufacture difficulty compared with Greatly, when to high-power high heat flux component cooling, this implementation can be selected in the case where installing space is permitted The heat pipe of example.

To examine the radiating effect of this programme heat pipe, inventor has designed and produced a brief test part：

Cooling situation of the heat pipe of embodiment 1 to a planar heating body is tested, the material that heat pipe uses is stainless Steel and be only provided with balance pipe in hot junction, temperature control be 85 DEG C, it is natural air cooled under the conditions of, measuring the heat pipe test specimen can bear most Big heat flow density is 61.3W/cm², hot-side temperature deviation is 3.0 DEG C, achieves cooling effect more more preferable than conventional parallel conduit.

Cooling situation of the heat pipe of embodiment 3 to a planar heating body is tested, the material copper that heat pipe uses, cooling Mode is changed to water cooling, is 85 DEG C in temperature control, the maximum heat flow density that measuring the heat pipe test specimen can bear is 161W/cm², hot junction temperature It is 2.1 DEG C to spend deviation, and satisfied cooling effect is obtained compared with conventional parallel conduit.

Claims

1. a kind of horizontal reducing series and parallel conduit plate type pulsating heat pipe, the reducing series and parallel conduit plate type pulsating heat pipe include Hot junction, cold end, intermediate, end socket, it is characterised in that：The hot junction is the rectangular flat of internal uniform isometrical hot junction passage；Institute State rectangular flat of the cold end for internal uniform isometrical cold end passage；The equivalent diameter of the cold end passage is that hot junction passage equivalent is straight 1-10 times of footpath；The hot junction is connected with cold end by the intermediate, and the cold end axis and the hot junction axis are in 5-90 Spend angle.

A kind of 2. horizontal reducing series and parallel conduit plate type pulsating heat pipe according to claim 1, it is characterised in that：Hot junction In the partition of adjacent hot junction passage be provided with the partition of adjacent cold ends passage in balance pipe and/or cold end and be provided with balance pipe.

A kind of 3. horizontal reducing series and parallel conduit plate type pulsating heat pipe according to claim 2, it is characterised in that：Hot junction One end is connected with intermediate, and the other end is provided with end socket, hot junction passage uniform in hot junction is formed parallel-connection structure；It is at least one cold The one end at end connects with intermediate, and the other end of cold end is provided with end socket, cold end passage uniform in cold end is formed parallel-connection structure.

A kind of 4. horizontal reducing series and parallel conduit plate type pulsating heat pipe according to claim 2, it is characterised in that：Hot junction The one end of both ends respectively with an intermediate is connected；The other end of each intermediate is at least connected with a cold end, the other end of cold end Provided with end socket, cold end passage uniform in cold end is set to form parallel-connection structure.

A kind of 5. horizontal reducing series and parallel conduit plate type pulsating heat pipe according to claim 3 or 4, it is characterised in that：Even The intermediate being connected between hot junction and cold end is provided with a hybrid chamber.

A kind of 6. horizontal reducing series and parallel conduit plate type pulsating heat pipe according to claim 5, it is characterised in that：It is described At least one surface of the rectangular flat of cold end is provided with radiating fin.

A kind of 7. horizontal reducing series and parallel conduit plate type pulsating heat pipe according to claim 6, it is characterised in that：It is described The length f of hybrid chamber that intermediate is set is：3mm≤f≤100mm.

A kind of 8. horizontal reducing series and parallel conduit plate type pulsating heat pipe according to claim 7, it is characterised in that：It is described The equivalent diameter of hot junction passage is 0.5~5mm, and the equivalent diameter of the cold end passage is 1~6mm.

A kind of 9. horizontal reducing series and parallel conduit plate type pulsating heat pipe according to claim 8, it is characterised in that：Hot junction In, balance pipe is set by pitch a on the partition of hot junction passage, pitch a scope is：5mm≤a≤100mm；In cold end, Balance pipe is set by pitch d on the partition of cold end passage, pitch d scope is：5mm≤d≤200mm；Hot junction balance pipe is worked as Measure a diameter of 0.5~3.0mm；The equivalent diameter of cold end balance pipe is 0.8~4.5mm.

A kind of 10. horizontal reducing series and parallel conduit plate type pulsating heat pipe according to claim 9, it is characterised in that：In heat The axis of the balance pipe set in the adjacent partitions of passage, cold end passage is held to overlap or misplace.