CN104266516A - Special-shaped rotary heat pipe suitable for multiple rotating speeds - Google Patents

Special-shaped rotary heat pipe suitable for multiple rotating speeds Download PDF

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Publication number
CN104266516A
CN104266516A CN201410475615.XA CN201410475615A CN104266516A CN 104266516 A CN104266516 A CN 104266516A CN 201410475615 A CN201410475615 A CN 201410475615A CN 104266516 A CN104266516 A CN 104266516A
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China
Prior art keywords
heat pipe
heat
evaporator section
endothermic tube
pipe body
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CN201410475615.XA
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Chinese (zh)
Inventor
朱跃钊
刘宇轩
范红途
王银峰
陈海军
杨丽
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Nanjing Tech University
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Nanjing Tech University
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Priority to CN201410475615.XA priority Critical patent/CN104266516A/en
Publication of CN104266516A publication Critical patent/CN104266516A/en
Pending legal-status Critical Current

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Abstract

The utility model provides a heterotypic rotation type heat pipe suitable for multiple rotational speed, includes the heat pipe main part, and the hypomere of heat pipe main part is heat pipe evaporation zone, and the upper segment of heat pipe main part is heat pipe cooling zone, the inside wall processing of heat pipe has the condensate reflux structure, and the lower extreme of heat pipe evaporation zone is equipped with at least one branch layer, and every branch layer has more than two branch like heat absorption pipe at least, and the heat absorption pipe uses the heat pipe main part as central evenly distributed to extend to the side below, the heat absorption pipe surface sets up the floor and forms the paddle. The gravity of the evaporation section of the heat pipe type stirring paddle is used as the main power for the backflow of the working medium under the condition of low rotating speed. Under the condition of high rotating speed, the centrifugal force generated by rotation is used as the main power of backflow, so that the heat pipe type stirring paddle has good adaptability under various rotating speeds.

Description

A kind of rotary heat pipe of abnormal shape being applicable to various rotating speed
Technical field
The present invention relates to heat pipe stirred bioreactor field, particularly for requiring the rotary heat pipe higher, temperature control accuracy is high to temperature homogeneity.
Background technology
Biological and chemical reactor needs to derive heat to control the temperature in reactor usually, and stirring simultaneously makes it mix, homogeneous temperature.Therefore, general reactor is all provided with heat exchange jacket, reactor also built-in coil pipe or the straight pipe type heat exchange component that large-scale or heat exchange amount is large, but these technology to there is heat exchange efficiency low, the problem of high material consumption.And because heat transmission equipment is still in device interior, heat-transfer effect is poor, need more heat exchange area, while causing reaction compartment waste, also make reaction medium temperature field even not, temperature is difficult to accurate control.Patent of invention " a kind of dynamic heat-pipe stirred bioreactor for multiple biological respinse " (CN 101182458) discloses a kind of dynamic heat-pipe stirred reactor for biological respinse, the problem of augmentation of heat transfer is solved under slow-speed of revolution condition, but along with shaft reach certain rotating speed time, internal working medium makes hot intraductal working medium backflow working line exist uncertain owing to rotating the centrifugal force produced, have larger defect in actual applications, time particularly rotating speed is high, liquid does not reflux substantially, heat pipe failure can be caused, in addition the cooling section of heat pipe does not have clear and definite truly feasible hermetically-sealed construction, water-cooling pattern is made to rest on the conceptual level.
Summary of the invention
For solving the problem, the present invention proposes a kind of rotary heat pipe of abnormal shape be applicable under low middle high speed conditions, adopt special internal face helical groove structure, the centrifugal force produced when utilizing heat pipe to rotate makes condensate liquid reflux, and make inside heat pipe Working fluid flow route more reasonable, working stability.
The technical scheme realizing the object of the invention is: a kind of rotary heat pipe of abnormal shape being applicable to various rotating speed, comprise heat pipe body, the hypomere of heat pipe body is heat pipe evaporator section, the epimere of heat pipe body is heat pipe cooling section, described inside heat pipe wall is processed with condensate liquid return-flow structure, the lower end of heat pipe evaporator section is provided with at least one branch's layer, each branch layer has the dendritic endothermic tube of two or more at least, endothermic tube is uniformly distributed centered by heat pipe body, and extend to side-lower, endothermic tube outer surface arranges floor and forms blade.
In technique scheme, the lower end of evaporator section is provided with at least one deck equally distributed special-shaped heat pipe structure blade centered by heat pipe body, by installing floor additional, increases heat exchange and mixing effect.
As a further improvement on the present invention, described cooling section outer wall is provided with water-cooling jacket, coordinates the fin of heat pipe cooling section well to dispel the heat.The cooling section of rotating heat pipe adopts water-cooling jacket structure, and the cooling section of opposite heat tube carries out water-cooled, utilizes fin and turning effort, enhances heat-sinking capability, the heat produced can be taken away in time in reactor.Cooling section adopts hermetically-sealed construction, overcomes the weakness that air cooling effect is bad, water cooling is implemented, increase the heat power of rotating heat pipe as paddle, make this reactor scope of application wider.
As a further improvement on the present invention, described endothermic tube bottom is communicated with heat pipe evaporator section inside, forms loop.In technique scheme, to require and the physical property evaporation ends of the height of reaction mass, reaction temperature and reaction mass is furnished with one or more layers dendritic endothermic tube according to stirring.Due to bifurcation structure, the component of the centrifugal force produced during rotation in liquid backflow direction can be provided, liquid backflow effect can be significantly improved, it can also be the enclosed structure of dendritic bifurcated, in upwards extension, vertical plane adopts helical groove structure opposite to the direction of rotation equally, and liquid is refluxed.
As a further improvement on the present invention, the inner chamber of described heat pipe body is lower large little taper.The embedded SMA actuators of rotating heat pipe becomes to have the conical surface at certain inclination angle, take full advantage of the centrifugal force rotating and produce, when rotating heat pipe rotating ratio is lower, the major impetus that gravity refluxes as its working medium, along with the increase of rotary speed, the backflow durection component of centrifugal force just can be used as backflow power, ensure that heat pipe can have fine reflux capability when rotary speed is low or high, greatly expands the range of speeds that it is suitable for.
As a further improvement on the present invention, the inwall of described heat pipe body is provided with along the helix conduit under direction of rotation screw.The inner chamber of heat pipe body is helical groove structure, the section form in spiral inner wall wire casing road, the tangential inertial force making working medium produced by rotary motion is under the opposite force and Action of Gravity Field of conduit prism, form a downward component, force downward liquid flow to arrive evaporator section, heat-pipe working medium is refluxed.The inner chamber of described heat pipe body can be processed into helical groove structure, on the one hand for the backflow of liquid provides backflow conduit, on the other hand, adds the heat exchange area of inner surface, serves the effect of augmentation of heat transfer.
As a further improvement on the present invention, described water-cooling jacket is made up of jacket pipe, top end cap and lower end cap, top end cap, between lower end cap and jacket pipe all with being threaded, top end cap, adopt between lower end cap and rotating heat pipe main body steel ball locate and flexible sealing structure.Rotating heat pipe main body and two-part sealing of water-cooling jacket adopt flexible sealing structure, for solving the problem of the decentraction of heat pipe body and cooling collar hermetically-sealed construction, locate with ball.
As a further improvement on the present invention, heat pipe body can be general water-carbon steel heat pipe, the heat pipe of stainless steel-ethanol heat pipe or other materials and working medium can be used to replace in some other occasion.
Principle of the present invention is: the skeleton structure evaporator section of heat pipe being made blade, can be single or multiple lift, can be dendroid bifurcated open architecture or dendritic bifurcated enclosed construction, and can by installing blade, and silk screen etc. form complete paddle blade structure.The operation class of heat pipe is similar to general gravity assisted heat pipe, intraductal working medium is heated and becomes gas mutually subsequently to upper flowing, taken away by heat in the cooling of condensation segment due to water-cooling jacket, Working medium gas condensation becomes liquid under the multiple action of gravity, centrifugal force and spiral channel side counter-force to evaporator section backflow formation loop.The evaporator section of dendritic bifurcation structure, when rotated, make liquid be subject to the effect of centrifugal force and gravity, fully can ensure the working medium backflow during heat pipe work in each branch, the inner chamber to upside in dendritic enclosed construction is provided with helical groove structure, and principle is identical with rotating shaft.Phegma working medium absorbs heat of vaporization at evaporator section, at condensation segment due to water-cooled effect, is condensed into liquid.By working medium circulation, take the heat that reactor produces out of reactor, ensure that stirring and the heat transfer property of reactor, and there is excellent uniform temperature.
Accompanying drawing explanation
The structural representation of Fig. 1 embodiment of the present invention, comprises Figure 1A open type and Figure 1B enclosed two kinds of situations;
Fig. 2 heat pipe evaporator section structural representation, Fig. 2 A is 3 branch's endothermic tube distribution maps, and Fig. 2 B is 4 branch's endothermic tube distribution maps;
Fig. 3 rotating heat pipe structural representation, Fig. 3 A is single layer structure, and Fig. 3 B is double-decker, and Fig. 3 C is closed type structure;
Stressed and flow schematic diagram in Fig. 4 rotating heat pipe, Fig. 4 A is condensation segment, and Fig. 4 B is evaporator section;
Liquid motion diagram after Fig. 5 inwall processing spiral channel;
The force diagram of Fig. 6 drop in helicla flute; Fig. 6 A is original state, and Fig. 6 B is the state after a time interval;
Fig. 7 is the structural representation that branched pipe forms loop; Fig. 7 A is a kind of structural representation that branched pipe forms loop, and Fig. 7 B is the another kind of structural representation that branched pipe forms loop;
Fig. 8 is the water-cooling jacket sealed structural representation of the embodiment of the present invention;
1---heat pipe body, 2---heat pipe cooling section, 3---heat pipe evaporator section, 4---blade layer, 5---heat pipe inner chamber, the dendritic endothermic tube of 61---spiral channel 31---evaporator section, 11---heat pipe positioning jacket 21---cooling fins, 22---water-cooling jacket, 42---stir fin, 7---lip packing, 8---steel ball, 9---end cap, 10---water-cooling jacket end face.
Detailed description of the invention
Be described further below in conjunction with drawings and Examples.
Embodiment
As shown in Figure 1A and 1B, a kind of rotary heat pipe of abnormal shape being applicable to various rotating speed, comprises heat pipe body 1, and the epimere of heat pipe body is heat pipe cooling section 2, and the hypomere of heat pipe body is heat pipe evaporator section 3, and the outer surface of heat pipe cooling section 2 is provided with fin 21.Endothermic tube is called for short) under blade layer 4(can be established in the outside of heat pipe evaporator section 3.
As shown in Figure 2 A, heat pipe evaporator section 3 is provided with three endothermic tubes 31, and endothermic tube 31 is uniformly distributed centered by heat pipe body 1, and extends to side-lower, and endothermic tube 31 outer surface arranges floor 4 and forms blade.
As shown in Figure 2 B, heat pipe evaporator section 3 is provided with four endothermic tubes 31, and endothermic tube 31 is uniformly distributed centered by heat pipe body 1, and extends to side-lower, and endothermic tube 31 outer surface arranges floor 4 and forms blade.
As shown in figs. 7 a-b, the bottom of endothermic tube 3 is interconnected, and forms closed-loop path.
Heat pipe structure as shown in Figure 3, Fig. 3 A is individual layer blade heat pipe structure figure, Fig. 3 B be multilayer heat pipe paddle blade structure figure, Fig. 3 C is enclosed paddle blade structure figure.The hollow vacuum structure of heat pipe inner chamber 5 is flow channels of liquids and gases in heat pipe condenser section and evaporator section, in the endothermic tube 31 of evaporator section 3, due to its distinctive bifurcation structure, certain centrifugal force can be produced when rotation, also can increase the backflow power of its liquid, improve heat exchange property.During heat pipe low speed rotation, gravity is as its main return power, and during heat pipe High Rotation Speed, centrifugal force component, as the major impetus of backflow, makes heat pipe have the good rotating speed scope of application.
Heat pipe body 1 is by driven by motor, and branch's endothermic tube 3 of rotating heat pipe evaporator section is arranged symmetrically with around central shaft, constitutes the basic structure of paddle.Along with the rotation of heat pipe, serve stirring action on the one hand, on the one hand due to the thermal resistance that heat pipe itself is very little, the heat of inside reactor is shifted out and also has very large facilitation.Water-carbon steel heat pipe selected usually by the material of heat pipe.Consider reaction heat size and the corrosivity of the liquid in reactor, some occasion also can select the heat pipe of water-stainless steel heat pipe or other materials and working medium.
According to the difference of different occasions and operation operating mode, heat pipe evaporator section can make Three branched pipe, as shown in Figure 2 A, or other structures such as four branched pipes, as shown in Figure 2 B.Due to the difference of the structural configuration of heat pipe evaporator section 3, this heat pipe can be transformed into and be similar to present existing various paddle blade structure, or in heat pipe evaporator section 3 axle portion, installs auxiliary blade additional to be applicable to multiple reaction occasion.
Can by inner chamber 5 being processed into the mode of taper in heat pipe condenser section 2 inside, improve its backflow power when rotated, streamline and stressed as shown in Fig. 4 A, Fig. 4 A is heat pipe central shaft profile, a-a is the flow circuits of steam, and b-b is the reflux line of liquid.At evaporator section 3, due to its distinctive bifurcation structure, certain centrifugal force F can be produced when rotation, also can increase the backflow power F of its liquid s, improve heat exchange property, as Fig. 4 B.Heat pipe jackshaft inwall makes certain angle of inclination, and has done exploded pictorial to centrifugal force.In figure, a-a, c-c are the flow circuits of steam, and b-b, d-d are the reflux line of liquid.During heat pipe low speed rotation, gravity is as its main return power, and during heat pipe High Rotation Speed, centrifugal force component, as the major impetus of backflow, makes heat pipe have the good rotating speed scope of application.
The backflow situation that the inner chamber 5 of heat pipe cooling section 2 is provided with along the helix conduit 61, Fig. 5 under direction of rotation screw when being inwall processing helix.Because liquid exists tangential inertia force effect, when heat pipe direction of rotation is contrary with internal thread direction, liquid will flow along helix, as shown in Figure 5A, when rotating heat pipe rotates along A-A direction, condensed fluid rotates along helix and flows downward, and streamline is as shown in e-e.Solve the problem of the liquid backflow obstacle when heat pipe rotary speed is higher like this.Same this structure is also applicable to the heat pipe of low speed rotation.During heat pipe low speed rotation, gravity is the major impetus of backflow, and the helix structure of inwall, can significantly improve the turbulivity of liquid, meanwhile, increases heat transfer sheet area, plays heat conduction reinforced effect.The shape of helix conduit 61 can be processed into trapezoidal or other shapes as shown in Figure 5 B.When the drop suspended clashes into along f-f the time of falling conduit, understand along g-g resilience, thus stay and reflux in the channel.
In order to be further detailed liquid is stressed, get helicla flute infinitesimal, its stressing conditions can represent with Fig. 6.Because centrifugal force is vertical with the direction of motion all the time, not as the power of liquid backflow, Gu all do not represent in the drawings.Shown in Fig. 6 A is the starting stage, drop in conduit along with tube wall motion.Movement velocity due to tube wall is greater than the speed of initial liquid drop, there is certain differences in motion through the very short time, there will be the state shown in Fig. 6 B.Meanwhile, the asynchronous surface of tube wall that makes of motion is supplied to liquid frictional force F 1, when drop is shown in Fig. 6 B during state, the constraint of wall can produce power F 2, F 2direction obliquely.F 2the vertical direction component of power and the gravity suffered by drop, exist the common power as liquid backflow, force liquid to return evaporator section.Along with the increase of rotating speed, gravity role is less, F 2the vertical direction component role of power is larger.
Opposite heat tube evaporator section can be processed into the loop structure shown in Fig. 7, and due to the effect of centrifugal force, bottom liquid will be distributed in the branched pipe of both sides, for the part away from axis provides heat exchange, for the uniform temperature in reactor provides structural condition.And due to vapour density low, relative to working medium, the centrifugal action be subject to is little, the flow channel that the inner chamber part of heat pipe evaporator section all can flow to cooling section as steam.Such structure, makes heat pipe when evaporator section volume is larger, has sufficient working medium all the time, and the appearance effectively avoiding heat pipe too early is dried up.
When heat pipe adopts water-cooled or other liquid to cool, the present invention adopts water-cooling jacket 22, and water-cooling jacket 22 comprises the upper and lower bearing block 12 of movable sealing structure.As shown in Figure 8, bearing block 12 is arranged on the outside of water-cooling jacket end face 10, and comprise bearing cap 9, bearing 11 and sealing 7, locate with ball 8, lip packing 7 seals.Water-cooling jacket end face 10 and bearing block 12 bolt presses, shown in Fig. 8 is the situation that it connects.This steel ball structure is compared common bearing location and is decreased space occupancy rate, is more applicable for this nonstandard heat exchanging piece of heat pipe simultaneously, makes the structure of heat pipe can more variation.Directly locate this method compared to employing seal 7, effectively can reduce the wearing and tearing of seal, improve the service life of equipment.
The present invention can significantly improve heat exchange efficiency and the space availability ratio of reactor.Utilize the excellent isothermal performance of heat pipe, and the length-adjustable feature of evaporator section simultaneously, can be applied to for temperature sensitivity and the higher occasion of uniform temperature requirement.

Claims (7)

1. one kind is applicable to the rotary heat pipe of abnormal shape of various rotating speed, comprise heat pipe body, the hypomere of heat pipe body is heat pipe evaporator section, and the epimere of heat pipe body is heat pipe cooling section, it is characterized in that, described inside heat pipe wall is processed with condensate liquid return-flow structure, the lower end of heat pipe evaporator section is provided with at least one branch's layer, and each branch layer has the dendritic endothermic tube of two or more at least, and endothermic tube is uniformly distributed centered by heat pipe body, and extend to side-lower, endothermic tube outer surface arranges floor and forms blade.
2. heat pipe according to claim 1, is characterized in that, described cooling section outer wall is provided with radiating fin or water-cooling jacket.
3. heat pipe according to claim 1, is characterized in that, described endothermic tube bottom is communicated with heat pipe evaporator section inside, forms loop.
4. according to the heat pipe described in claim 1, it is characterized in that, described condensate liquid return-flow structure is that lower large little taper is processed in heat pipe inner wall face.
5. heat pipe according to claim 1, is characterized in that, described condensate liquid return-flow structure is that the inwall of heat pipe body is provided with along the helix conduit under direction of rotation screw.
6. heat pipe according to claim 4, is characterized in that, described helix conduit cross section is triangle or trapezoidal.
7. rotating heat pipe according to claim 1, is characterized in that, described heat pipe body is water-carbon steel heat pipe or stainless water steel heat pipe.
CN201410475615.XA 2014-09-18 2014-09-18 Special-shaped rotary heat pipe suitable for multiple rotating speeds Pending CN104266516A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106482562A (en) * 2016-11-01 2017-03-08 华南理工大学 A kind of spliced space multiple branch circuit distribution heat pipe and preparation method thereof
CN106482561A (en) * 2016-11-01 2017-03-08 华南理工大学 A kind of multiple branch circuit heat pipe based on double sintering molding and preparation method thereof
CN106659088A (en) * 2017-01-04 2017-05-10 重庆华渝重工机电有限公司 High-power device heat dissipating structure of wind power pitch control system
WO2019001815A1 (en) * 2017-06-27 2019-01-03 Hans Heidolph GmbH Blending device, in particular a hand blender
CN109668460A (en) * 2018-02-13 2019-04-23 山东大学 A kind of gravity assisted heat pipe
CN109668461A (en) * 2018-02-13 2019-04-23 山东大学 A kind of gravity assisted heat pipe
CN110243211A (en) * 2018-03-09 2019-09-17 本田技研工业株式会社 Heat conducting pipe, rotor and rotating electric machine
CN112229253A (en) * 2020-10-30 2021-01-15 上海卫星装备研究所 Heat pipe branch connecting device and heat pipe system

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CN102673121A (en) * 2012-04-23 2012-09-19 中国航天空气动力技术研究院 Rotary heating pipe cooling type ink-pumping roll
CN103398610A (en) * 2013-08-08 2013-11-20 何其伦 Efficient heat transmission stirring device with standard heat pipe and rotating heat pipe combined

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JPS54124363A (en) * 1978-03-20 1979-09-27 Hitachi Zosen Corp Temperature uniforming process in fermenting vat
CN1563875A (en) * 2004-04-20 2005-01-12 西南交通大学 Heating rod having branch heat absorbing structure
CN101182458A (en) * 2007-11-28 2008-05-21 南京工业大学 Dynamic heat pipe stirring bioreactor for various biological reactions
CN102673121A (en) * 2012-04-23 2012-09-19 中国航天空气动力技术研究院 Rotary heating pipe cooling type ink-pumping roll
CN103398610A (en) * 2013-08-08 2013-11-20 何其伦 Efficient heat transmission stirring device with standard heat pipe and rotating heat pipe combined

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106482562A (en) * 2016-11-01 2017-03-08 华南理工大学 A kind of spliced space multiple branch circuit distribution heat pipe and preparation method thereof
CN106482561A (en) * 2016-11-01 2017-03-08 华南理工大学 A kind of multiple branch circuit heat pipe based on double sintering molding and preparation method thereof
CN106482561B (en) * 2016-11-01 2018-05-15 华南理工大学 One kind is based on molding multiple branch circuit heat pipe of double sintering and preparation method thereof
CN106482562B (en) * 2016-11-01 2019-05-14 华南理工大学 A kind of spliced space multi-branch distribution heat pipe and preparation method thereof
CN106659088A (en) * 2017-01-04 2017-05-10 重庆华渝重工机电有限公司 High-power device heat dissipating structure of wind power pitch control system
WO2019001815A1 (en) * 2017-06-27 2019-01-03 Hans Heidolph GmbH Blending device, in particular a hand blender
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CN110243211A (en) * 2018-03-09 2019-09-17 本田技研工业株式会社 Heat conducting pipe, rotor and rotating electric machine
US10965194B2 (en) 2018-03-09 2021-03-30 Honda Motor Co., Ltd. Heat pipe, rotor, and rotary electric machine
CN112229253A (en) * 2020-10-30 2021-01-15 上海卫星装备研究所 Heat pipe branch connecting device and heat pipe system
CN112229253B (en) * 2020-10-30 2022-07-08 上海卫星装备研究所 Heat pipe branch connecting device and heat pipe system

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Application publication date: 20150107