CN105180695A - Loop heat pipe cooler - Google Patents
Loop heat pipe cooler Download PDFInfo
- Publication number
- CN105180695A CN105180695A CN201510737829.4A CN201510737829A CN105180695A CN 105180695 A CN105180695 A CN 105180695A CN 201510737829 A CN201510737829 A CN 201510737829A CN 105180695 A CN105180695 A CN 105180695A
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- gear
- top board
- heat pipe
- chamber
- loop heat
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Abstract
The invention discloses a loop heat pipe cooler, and aims to provide a loop pipe cooler that can prevent working medium from drying up and instable fluctuation, and improve stability and safety during operation of high heating flux devices. An evaporator comprises a closed chamber composed of a housing and a bottom board, the bottom board is provided with a plurality of evaporation grooves which form an evaporation chamber, the upper portion of the closed chamber is separated into an expansion chamber and a compensation chamber via a septum, liquid intake cores are arranged at the periphery of the compensation chamber and between the compensation chamber and the evaporation grooves, a compensation pipe communicating the compensation chamber with the expansion chamber is disposed in the compensation chamber, a top board is arranged in the expansion chamber, the top board is fixedly connected to the septum via a spring, two sides of the top boards are respectively fixed to the housing via bellows, and an expansion modulation mechanism is mounted on the top board. The evaporation chamber is connected to an inlet of a condenser via a steam connecting pipe, and an outlet of the condenser is connected to the compensation chamber via a liquid connecting pipe. The loop heat pipe cooler can improve stability and safety during operation of high heating flux devices.
Description
Technical field
The present invention relates to Thermal Power Engineering technical field, particularly a kind of loop heat pipe radiator that can successfully manage thermal shock and high load capacity.
Background technology
Along with the develop rapidly of high heat flux device technology in high-power LED illumination, large server and aerospace field, the heat flow density of single equipment is from original 0.1-10W/cm
2magnitude towards 10-1000/cm
2and even higher magnitude is doubled and redoubled.Conventional loop heat-pipe radiator belongs to passive type cooling device, the transmittance process that its evaporimeter relies on merely the capillary draft produced in liquid-sucking core to maintain liquid refrigerant to transmit to transformation interface, when tackling small-power heat radiation, stable sex chromosome mosaicism is still not serious, but when tackling varying load condition or high load capacity operating mode, due to heat flow density rapid fluctuation or sharply rise, vapor chamber steam pressure head increases along with thermic load and rises, when thermic load exceedes certain value, the operating mode that the circulation drive ram that conventional loop heat-pipe radiator relies on single liquid-sucking core to produce often can not tackle sudden change and the hot-fluid sharply risen, liquid-sucking core can produce dry-cutout phenomenon due to sudden load and the hot-fluid sharply risen, harm is produced to the safe and effective operation of high heat flux device.In addition, heating surface thermic load cannot be mated all the time with circulation industrial quality, the running resistance of system is comparatively large and heating surface also can be comparatively serious to the leakage thermal phenomenon of compensated cavity, therefore its radiating effect and operation stability not satisfactory, time serious, even jeopardize the security of operation of high heat flux device itself.
Summary of the invention
The object of the invention is the technological deficiency for existing in prior art, and provide one that generation working medium can be avoided to dry up and erratic fluctuations, promote the stability of high heat flux device operation and the loop heat pipe radiator of security.
The technical scheme adopted for realizing object of the present invention is:
A kind of loop heat pipe radiator, comprise condenser and evaporimeter, described evaporimeter comprises the closed cavity be made up of shell and base plate, described base plate is provided with multiple evaporation conduit, multiple described evaporation conduit composition evaporation cavity, the top of described closed cavity becomes expansion chamber and compensated cavity by baffle for separating, the periphery of described compensated cavity and be provided with liquid-sucking core between described compensated cavity and described evaporation conduit, the compensating pipe being communicated with described compensated cavity and expansion chamber is provided with in described compensated cavity, in described expansion chamber, top board is installed, described top board is fixedly connected with described dividing plate by spring, the both sides of described top board are fixed respectively by bellows and described shell, described top board is provided with expansion governor motion, described evaporation cavity is connected with the import of described condenser by steam connection tube road, and the outlet of described condenser is connected with described compensated cavity by fluid connection tube road, forms loop.
The inner side of described shell is provided with insulation chambers.
Described expansion governor motion comprises the push rod, motor, transmission mechanism and the leading screw that are fixedly connected with described top board, described leading screw is threaded with described push rod, the heating surface of described base plate is provided with checkout gear, the output of described checkout gear is connected with described electric machine controller, controls described motor and drives described push rod to drive described top board to move up and down by described expansion transmission mechanism.
Described push rod both sides are provided with chute, and described shell coordinates with described slide.
Described transmission mechanism comprises the first gear, the second gear, described first gear is connected with the output shaft of described motor, described first gear and described second gears meshing, described second gear is fixedly connected with described leading screw, and the diameter of described first gear is greater than the diameter of described second gear.
Described motor, the first gear, the second gear and leading screw are installed in waterproof casing, and described push rod is fixedly connected with described top board through described waterproof casing.
Described checkout gear is temperature or pressure sensor.
Compared with prior art, the invention has the beneficial effects as follows:
1, loop heat pipe radiator of the present invention is by the design of expansion chamber, compensated cavity and expansion governor motion, drive the working medium of storing in the bellows and top board extruding or suction expansion chamber be connected, force the working medium of storage in expansion chamber to enter in compensated cavity or force to aspirate the working medium being positioned at compensated cavity to be back to described expansion chamber, supplement or get rid of the circulation industrial quality in the circulatory system, making the working medium circulation amount in the circulatory system keep synchronous with the rate of change of the load of heat or thermic load that put on heating surface all the time and change.With this, passive type cooling heat dissipation equipment is controlled by active mode, when overcoming conventional heat pipe in heavy-duty service and in the face of thermal shock, loop heat pipe evaporator easily produces technical barrier that is dry and erratic fluctuations, to promote stability and the security of the operation of high heat flux device, and significantly can expand range of application and the field of loop circuit heat pipe.
2, the expansion governor motion in loop heat pipe radiator of the present invention can adopt automatic control, by being arranged at temperature or the pressure-measuring-point of described heating surface, the temperature of heating surface or operating pressure distributed intelligence in timely acquisition high heat flux device running, when thermic load changes or fluctuate, motor can be controlled and drive the top board be arranged on expansion chamber, easy to use, reliability is high.
Accompanying drawing explanation
Figure 1 shows that the structural representation of loop heat pipe radiator of the present invention;
Figure 2 shows that the drive part schematic diagram of loop heat pipe radiator.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
The schematic diagram of loop heat pipe radiator of the present invention as shown in Figure 1, comprise condenser 10 and evaporimeter, described evaporimeter comprises the closed cavity be made up of shell 1 and base plate 2, described base plate 2 is provided with multiple evaporation conduit 8, multiple described evaporation conduit 8 forms evaporation cavity 9, the top of described closed cavity is separated into expansion chamber 25 and compensated cavity 11 by dividing plate 20, the periphery of described compensated cavity 11 and be provided with liquid-sucking core 5 between described compensated cavity 11 and described evaporation conduit 8, the compensating pipe 12 being communicated with described compensated cavity 11 and expansion chamber 25 is provided with in described compensated cavity 11, in described expansion chamber 25, top board 14 is installed, described top board 14 is fixedly connected with described dividing plate 20 by spring 15, the both sides of described top board 14 are fixed respectively by bellows 13 and described shell 1, described top board 14 is provided with expansion governor motion.The steam (vapor) outlet 4 of described evaporation cavity 9 is connected with the import of described condenser 10 by steam connection tube road 3, and the outlet of described condenser 10 is connected by the liquid-inlet 7 of fluid connection tube road 6 with described compensated cavity 11, forms loop.
In order to avoid heat loss, the inner side of described shell 1 is provided with insulation chambers 16.
In the present embodiment, described expansion governor motion comprises the push rod 23, motor 18, transmission mechanism and the leading screw 19 that are fixedly connected with described top board 14, described leading screw 19 is threaded with described push rod 23, the heating surface of described base plate 2 is provided with checkout gear 26, the output of described checkout gear 26 is connected with described motor 18 controller, controls described motor 18 and drives described push rod 23 to drive described top board 14 to move up and down by described expansion transmission mechanism.In the present embodiment, described checkout gear 26 is temperature or pressure sensor.
In order to improve upper and lower reliability of operation, described push rod 23 both sides are provided with chute 24, and described shell 1 is slidably matched with described chute 24.
Transmission mechanism can adopt various structures.In the present embodiment, its schematic diagram as shown in Figure 2, described transmission mechanism comprises the first gear 21, second gear 22, described first gear 21 is connected with the output shaft of described motor 18, described first gear 21 engages with described second gear 22, described second gear 22 is fixedly connected with described leading screw 19, and the diameter of described first gear 21 is greater than the diameter of described second gear 22, realizes step-up drive.
Described motor 18, first gear 21, second gear 22 and leading screw 19 are installed in waterproof casing 17, and described push rod 23 is fixedly connected with described top board 14 through described waterproof casing 17.
After the thermic load putting on described base plate 2 heating surface when the external world works, loop heat pipe radiator of the present invention starts to start and starts gradually to set up stable operation circulation, add heat is passed to described liquid-sucking core 5 lower surface by the described conduit 8 on described heating surface, the applying of thermic load makes working medium in described vapor chamber 9 produce phase transformation evaporation, the steam produced after phase transformation evaporation enters described steam connection tube road 3 along described conduit 8, the thermic load putting on described heating surface is taken away simultaneously, the steam that phase transformation produces enters described condenser 10 and completes condensation wherein, discharge entrained heat and be re-condensed into liquid refrigerant, liquid refrigerant after condensation continues onwards transmission in described fluid connection tube road 6, enter in described compensated cavity 11.Because the liquid refrigerant near the heating surface of described base plate and described liquid-sucking core 5 constantly leaves loop circuit heat pipe because phase transformation is evaporated, under the effect of the capillary draft of described liquid-sucking core 5, liquid refrigerant in described compensated cavity 11 is towards transformation interface---and described conduit 8 transmits with the interface of described liquid-sucking core 5, supplements the liquid refrigerant leaving described vapor chamber 9 because of phase transformation evaporation.
When the thermic load putting on described heating surface increases gradually, in described vapor chamber 9, phase transformation evaporation rate can be accelerated because of the increase of thermic load, and the capillary draft of liquid-sucking core has certain limit.When thermic load is increased to a certain degree, the liquid refrigerant that typical loop heat-pipe radiator can be greater than in liquid-sucking core because of evaporation rate supplements speed and causes producing in described vapor chamber 9 and described liquid-sucking core 5 dry-out, and this normal operation for heat dissipation equipment is breakneck.The present invention is by arranging expansion chamber 25 and corresponding controlling organization, when the heating surface temperature rise that described pressure or temperature sensor 26 record described base plate is very fast, described motor 18 will be driven to drive described first gear 21 to rotate, described second gear 22 is driven to rotate, because described push rod 23 is connected with described leading screw 19, and described push rod 23 is subject to the spacing of described chute 24, under the rotarily driving of described second gear, described top board 23 is defined and does downward rectilinear motion, described top board 23 will do downward rectilinear motion thereupon, under the drive of described top board 23, described bellows 13 extrudes working medium in described expansion chamber 25 together with described top board 23, working medium enters described compensated cavity 11 along described compensating pipe 12 after being squeezed, compensate Yin Wendu to rise the loop circuit heat pipe dry-out comparatively fast caused, the working medium circulation amount circulatory system being possessed all the time adapt with thermic load.
When the thermic load putting on described baseplate heated face reduces, after corresponding signal experienced by temperature or pressure sensor, described motor 18 is driven to rotate backward, the second gear 22 is driven to rotate in opposite direction by described first gear 21, described top board 23 is driven to do reverse linear ascending motion, produce negative pressure in described expansion chamber 25 thereupon and suck liquid refrigerant by described compensating pipe 12 from described compensated cavity 11, the corresponding minimizing of effective working medium circulation amount in the circulatory system, make in circulation line, to possess the working medium circulation amount matched with thermic load all the time, decrease the adverse effect that the circulation resistance that causes due to interference working medium is larger.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. a loop heat pipe radiator, it is characterized in that, comprise condenser and evaporimeter, described evaporimeter comprises the closed cavity be made up of shell and base plate, described base plate is provided with multiple evaporation conduit, multiple described evaporation conduit composition evaporation cavity, the top of described closed cavity becomes expansion chamber and compensated cavity by baffle for separating, the periphery of described compensated cavity and be provided with liquid-sucking core between described compensated cavity and described evaporation conduit, the compensating pipe being communicated with described compensated cavity and expansion chamber is provided with in described compensated cavity, in described expansion chamber, top board is installed, described top board is fixedly connected with described dividing plate by spring, the both sides of described top board are fixed respectively by bellows and described shell, described top board is provided with expansion governor motion, described evaporation cavity is connected with the import of described condenser by steam connection tube road, and the outlet of described condenser is connected with described compensated cavity by fluid connection tube road, forms loop.
2. loop heat pipe radiator according to claim 1, is characterized in that, the inner side of described shell is provided with insulation chambers.
3. loop heat pipe radiator according to claim 1 and 2, it is characterized in that, described expansion governor motion comprises the push rod, motor, transmission mechanism and the leading screw that are fixedly connected with described top board, described leading screw is threaded with described push rod, the heating surface of described base plate is provided with checkout gear, the output of described checkout gear is connected with described electric machine controller, controls described motor and drives described push rod to drive described top board to move up and down by described expansion transmission mechanism.
4. loop heat pipe radiator according to claim 3, is characterized in that, described push rod both sides are provided with chute, and described shell coordinates with described slide.
5. loop heat pipe radiator according to claim 3, it is characterized in that, described transmission mechanism comprises the first gear, the second gear, described first gear is connected with the output shaft of described motor, described first gear and described second gears meshing, described second gear is fixedly connected with described leading screw, and the diameter of described first gear is greater than the diameter of described second gear.
6. loop heat pipe radiator according to claim 5, is characterized in that, described motor, the first gear, the second gear and leading screw are installed in waterproof casing, and described push rod is fixedly connected with described top board through described waterproof casing.
7. loop heat pipe radiator according to claim 3, is characterized in that, described checkout gear is temperature or pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510737829.4A CN105180695B (en) | 2015-11-04 | 2015-11-04 | Loop heat pipe cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510737829.4A CN105180695B (en) | 2015-11-04 | 2015-11-04 | Loop heat pipe cooler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105180695A true CN105180695A (en) | 2015-12-23 |
| CN105180695B CN105180695B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510737829.4A Expired - Fee Related CN105180695B (en) | 2015-11-04 | 2015-11-04 | Loop heat pipe cooler |
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| CN (1) | CN105180695B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106376219A (en) * | 2016-09-26 | 2017-02-01 | 郑州航空工业管理学院 | Heat dissipation apparatus used for big-data all-in-one machine |
| CN107036474A (en) * | 2017-06-14 | 2017-08-11 | 天津商业大学 | A kind of rotary loop circuit heat pipe evaporating radiator |
| CN107084636A (en) * | 2017-06-14 | 2017-08-22 | 天津商业大学 | A kind of loop circuit heat pipe evaporating radiator |
| CN108321448A (en) * | 2018-03-05 | 2018-07-24 | 西南交通大学 | A kind of efficient rail traffic energy storage heat management system and its thermal management algorithm |
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| CN101013011A (en) * | 2007-02-05 | 2007-08-08 | 中山大学 | Multiple-pass self-regulating loop heat pipe device |
| US20100132925A1 (en) * | 2008-12-03 | 2010-06-03 | Donald Carson Lewis | Partable Thermal Heat Pipe |
| CN102101350A (en) * | 2010-12-24 | 2011-06-22 | 宁波双林模具有限公司 | Precision mold for small-spiral-angle duplex gear |
| CN103705122A (en) * | 2013-12-30 | 2014-04-09 | 深圳市北鼎晶辉科技股份有限公司 | Water dispenser with cup supporting plate lifting mechanism |
| CN104684245A (en) * | 2015-02-28 | 2015-06-03 | 华为技术有限公司 | Single plate, electronic device and heat dissipation method for single plate |
| CN205102646U (en) * | 2015-11-04 | 2016-03-23 | 天津商业大学 | Loop thermotube heat radiator |
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2015
- 2015-11-04 CN CN201510737829.4A patent/CN105180695B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101013011A (en) * | 2007-02-05 | 2007-08-08 | 中山大学 | Multiple-pass self-regulating loop heat pipe device |
| US20100132925A1 (en) * | 2008-12-03 | 2010-06-03 | Donald Carson Lewis | Partable Thermal Heat Pipe |
| CN102101350A (en) * | 2010-12-24 | 2011-06-22 | 宁波双林模具有限公司 | Precision mold for small-spiral-angle duplex gear |
| CN103705122A (en) * | 2013-12-30 | 2014-04-09 | 深圳市北鼎晶辉科技股份有限公司 | Water dispenser with cup supporting plate lifting mechanism |
| CN104684245A (en) * | 2015-02-28 | 2015-06-03 | 华为技术有限公司 | Single plate, electronic device and heat dissipation method for single plate |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106376219A (en) * | 2016-09-26 | 2017-02-01 | 郑州航空工业管理学院 | Heat dissipation apparatus used for big-data all-in-one machine |
| CN106376219B (en) * | 2016-09-26 | 2017-09-29 | 郑州航空工业管理学院 | Heat abstractor for big data all-in-one |
| CN107036474A (en) * | 2017-06-14 | 2017-08-11 | 天津商业大学 | A kind of rotary loop circuit heat pipe evaporating radiator |
| CN107084636A (en) * | 2017-06-14 | 2017-08-22 | 天津商业大学 | A kind of loop circuit heat pipe evaporating radiator |
| CN107036474B (en) * | 2017-06-14 | 2019-05-17 | 天津商业大学 | A kind of rotary loop circuit heat pipe evaporating radiator |
| CN108321448A (en) * | 2018-03-05 | 2018-07-24 | 西南交通大学 | A kind of efficient rail traffic energy storage heat management system and its thermal management algorithm |
| CN108321448B (en) * | 2018-03-05 | 2023-07-28 | 西南交通大学 | Efficient rail transit energy storage thermal management system and thermal management method thereof |
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| Publication number | Publication date |
|---|---|
| CN105180695B (en) | 2017-04-12 |
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