CN103234287A - Embedded type straight-barrel vacuum heat pipe heat collecting element pressure-reducing idle sunning protector - Google Patents
Embedded type straight-barrel vacuum heat pipe heat collecting element pressure-reducing idle sunning protector Download PDFInfo
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- CN103234287A CN103234287A CN2013101417826A CN201310141782A CN103234287A CN 103234287 A CN103234287 A CN 103234287A CN 2013101417826 A CN2013101417826 A CN 2013101417826A CN 201310141782 A CN201310141782 A CN 201310141782A CN 103234287 A CN103234287 A CN 103234287A
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- 230000001012 protector Effects 0.000 title claims abstract description 19
- 239000011521 glass Substances 0.000 claims abstract description 35
- 239000006059 cover glass Substances 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000005855 radiation Effects 0.000 claims description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 30
- 230000003760 hair shine Effects 0.000 claims description 29
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- 230000006837 decompression Effects 0.000 claims description 21
- 229910052742 iron Inorganic materials 0.000 claims description 15
- 238000004080 punching Methods 0.000 claims description 15
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract 1
- 230000005484 gravity Effects 0.000 description 5
- 230000005514 two-phase flow Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000009834 vaporization Methods 0.000 description 4
- 230000008016 vaporization Effects 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 230000002463 transducing effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 239000002384 drinking water standard Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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Abstract
An embedded type straight-barrel vacuum heat pipe heat collecting element pressure-reducing idle sunning protector consists of more than one idle sunning protection heat transfer channels and is arranged in a vacuum heat-insulating layer at the tail end of a vacuum heat pipe heat collecting element. Each idle sunning protection heat transfer channel consists of a heat radiating paster, a heat sink, a heating power drive device provided with an interface in heat-transfer connection with a heat pipe or an inner glass pipe, and a middle piece in transmission connection with the heating power drive device or integrally manufactured with the heating power drive device. The embedded type straight-barrel vacuum heat pipe heat collecting element pressure-reducing idle sunning protector has two types of stable states, namely an opening heat-conducting state when the middle piece is in heat-transfer connection with the heat sink and the heat radiating paster at the same time, and a closed heat-insulating state when the middle piece is not in heat-transfer connection with the heat sink and the heat radiating paster at the same time. The embedded type straight-barrel vacuum heat pipe heat collecting element pressure-reducing idle sunning protector is characterized in that the heat radiating paster includes an interface connected with the inner surface of the bottom end position of a cover glass pipe round sealing end and an interface performing heat transfer with the middle piece. Water vapor pressure inside a 70-watt heat collecting element heat pipe can be ensured not to exceed two atmospheric pressures through one idle sunning protector with10-watt heat radiating power, and the reliability is high.
Description
Technical field
The present invention relates to the empty protector that shines of embedded middle sheet vacuum heat-pipe heat collecting element decompression.
Background technology
Vacuum heat collection pipe arranges vacuum heat-insulating layer between its cover glass tube and inner glass tube, can make the vacuum solar water heater that also can provide the domestic hot-water winter.With the solar water heater of heat-pipe vacuum heat collecting pipe manufacturing have more anhydrous Energy Efficiency Ratio height in the pipe, meet the safe drinking water standard, single tube damages advantage such as in the same old way work.Therefore.Anhydrous solar energy evacuated heat pipe water heater might capture the increasing market share in the pipe.
Adopt the integrated glass heat pipe have can with cover glass tube melt envelope, glass heat pipe surface can directly make absorbing film heat transfer link few, can adopt the splendid water of thermophysical property to make advantages such as working medium.
But during empty the solarization, heat collecting element inside heat pipe temperature can reach 230 ℃, and the saturated vapor pressure of this temperature correspondence is 28.53 atmospheric pressure, and corresponding working medium filling weight is that the working medium volumetric ratio is 1.1% with the ratio of heat pipe volume, and namely per 1 liter capacity has 11 ml waters.
The pressure of inside heat pipe in the time of can reducing empty the solarization by reducing the working medium filling weight, be example with water conservancy project matter: when working medium filling weight/heat pipe plot ratio 0.5% during from 5 milliliters/1000 milliliters are reduced to 2 milliliters/1000 milliliters 0.2%, correspondingly its highest saturated vapor pressure is reduced to about 3.7 atmospheric pressure of 140 ℃ from about 10 atmospheric pressure of 180 ℃, and inside heat pipe when continuing to be warming up to 180 ℃ from 140 ℃ of about 3.7 atmospheric high-vapor-pressures internal pressure only have about 4 atmospheric pressure.But the internal pressure when the working medium filling weight can not only shine with sky sometimes decides.For a working medium filling weight/heat pipe plot ratio be 0.2%, the heat pipe of 1000 milliliters of internal capacities, 2000 millimeters of length, if for make empty when shining 230 ℃ internal pressure be no more than 4 atmospheric pressure, then the working medium filling weight is about 1.8 milliliters.Be light-pipe structure even problem is described heat pipe, when work were spent in inclination about 45, the condensed water of cold junction, the circulating water in hot junction added that 0.353 milliliter of sum of the water yield of 85 ℃ of water vapours can be far away from 1.8 milliliters.
Make working medium filling weight/heat pipe plot ratio greater than 0.2% even 0.3% in order to satisfy the heat pipe operate as normal, and guarantee the not bombing because of empty solarization of glass heat pipe, must take the empty safeguard measure of shining.
The Chinese invention patent 2009101951003 anti-empty all-glass vacuum heat collector tube elements that shine; disclosed a kind of empty protection all-glass vacuum heat collector tube element that shines; constitute by between vacuum heat collection element absorber and cover glass-tube, controlled heat transfer path being set; controlled heat transfer path is made up of movable heat transfer piece and actuator, it is characterized in that containing the heating power transducing actuator that is connected with vacuum heat collection element absorber low thermal resistance.Because this patent is not specially at the gravity assisted heat pipe heat collecting element, thereby specific aim is not strong; The original consistency of product of bimetal leaf heating power transducing actuator that it adopts is just bad, restorable ability can reduce again after temperature distortion repeatedly, 20 year possible projected life of operating point settings that its control system of bearing is relevant, control variables input, comparison, transducing and energy are supplied with and the execution function far can not normally effectively be worked because precision is affected heat collecting element.
Fig. 3 provides the light-pipe structure gravity assisted heat pipe structural representation of a tiltably-mounted.
Among Fig. 3, heat pipe 1 is made by shell and internal working medium.Its operation principle is: heat energy is i.e. inwards arrow sign input side by side from the hot junction of below, make the vaporization of being heated of the working medium at heat pipe 1 inner bottom place, steam is under the effect of pressure reduction, upwards advance to the heat pipe cold junction and be arrow side by side outwards the sign place emit heat energy and be supplied to load and be condensed into the cold junction of liquid below under the gravity effect, being back to, in the vaporization of being heated again of hot junction working medium ..., constantly circulation realizes the two phase flow heat transfer circulation thus.Heat pipe has excellent heat-transfer capability, heat flow density ability to transform and isothermal characteristics.If 100 watts of heat pipe 1 hot junction inputs, then its cold junction output is the highest can reach 97 watts even higher.
If attempt heat pipe 1 to Fig. 3 only from following input heat energy, and do not take heat energy away, then heat pipe 1 steam inside is pressed and can sharply be risen.If heat pipe 1 adopts water as working medium and abundant, then when heat pipe 1 temperature reached 230 ℃, inner maximum pressure can reach 28.53 atmospheric pressure.
If attempt the heating and take out heat energy from following a section of whole heat pipe 1 length 3% of accounting for that for example begins from the bottom a little more than heat pipe 1 bottom local comprehensively from top to bottom of the heat pipe 1 of Fig. 3, namely only make position that the bottom accounts for heat pipe 1 total length 3% forward simultaneously as overlapping cold junction, then the vapour pressure of heat pipe 1 inside can drop to the saturated vapor pressure corresponding with the temperature of following cold junction.When for example water is as working medium, 100 ℃ of the temperature of maintenance heat pipe 1 following overlapping cold junction, even then top other parts are heated to 230 ℃, because the liquid refrigerant of heat pipe 1 inside all is collected in described overlapping cold junction, heat pipe 1 hot junction above except described overlapping cold junction is not owing to there is working medium to replenish whole drying up, and the two phase flow heat transfer mechanism has not existed.The steam pressure of heat pipe 1 inside 1 atmospheric pressure of also only having an appointment.
An example of overlapping cold junction is that thermotube wall has absorbing film, absorbs sunshine and imports as heat energy, connects described thermotube wall with heat transfer device low thermal resistance simultaneously and heat energy is shifted.
Thisly make that heat pipe 1 is in tilted layout, heat energy is imported and only perhaps do not had what meaning with following a bit of design as overlapping cold junction in other occasions above heat pipe 1, but the sky that is used for solar collection element shines protection, because only need minimum a part of heat radiation power---this part heat radiation power is used for guaranteeing empty the solarization when taking place, and the empty peak that shines the initial stage inside heat pipe vapour pressure that protective device begins to work is no more than setting value; This part heat radiation power also is greater than described overlapping cold junction as the heat energy input power in hot junction---thus have radiating element volume compact, dependable performance, heat radiation power little, to the venting of vacuum heat-insulating layer less, to absorber to block influence little and can utilize the heat collecting element tail end as the advantage of heat dissipation interface.
Can see that the needed heat radiation power of more little, the described empty solarization protection device of the area of overlapping cold junction is also more little, more favourable.Actual heat collecting element needs the device of tail box and so on to settle.The tail box can hide the tail end of heat collecting element.The part that is hidden by the tail box does not belong to overlapping cold junction.Why also can use overlapping cold junction; be because some heat collecting elements empty shine protective device relatively be fit to be installed on vacuum heat-insulating layer drum-shaped section or; the heat collecting element cover glass tube has necking segment and is to adopt in necking segment to form back assembling inner glass tube, and then draws tail pipe to be called for short the technology of post-tensioning tail pipe to cover glass tube circle envelope.If the round end-blocking that post-tensioning tail pipe technology forms is not suitable for heat radiation, dispel the heat from described round end-blocking cover glass tube drum-shaped section up with regard to needing to utilize.Heat pipe or the inner glass tube end section corresponding with described drum-shaped section belong to overlapping cold junction.
Overlapping cold junction is based on empty solarization of decompression of blocking-up heat pipe two phase flow heat transfer circulation and protects design, and this is and the above-mentioned Chinese invention patent 2009101951003 anti-empty empty solarization protection of non-decompression design controllable heat dissipation channel essential distinctions of shining all-glass vacuum heat collector tube element.
China's 912050845 utility model electric cookers have been introduced a kind of pyromagnetic power inverting element operation principle of utilizing with automatic magnetic temperature detect switch (TDS).
Summary of the invention
The objective of the invention is to provide embedded middle sheet vacuum heat-pipe heat collecting element decompression the empty protector that shines.
The present invention solves the technical scheme that its technical problem is taked: with the empty protection heat transfer path that shines of middle sheet vacuum heat-pipe heat collecting element decompression more than; form an empty protector that shines of embedded middle sheet vacuum heat-pipe heat collecting element decompression, be arranged in the vacuum heat-insulating layer of vacuum heat-pipe heat collecting element tail end.Described empty shine the protection heat transfer path by heat radiation paster, Re Hui, have and be in transmission connection with the thermodynamic-driven device of heat collecting element heat pipe or inner glass tube heat transfer linkage interface, with the thermodynamic-driven device or form with the integrally manufactured middle sheet of thermodynamic-driven device.Described sky shines protects heat transfer path to have two kinds of stable states: the unlatching heat conduction state when middle sheet conducts heat simultaneously and connects the heat remittance and dispel the heat paster; In sheet close adiabatci condition when conduct heat not connecting heat simultaneously and converging with the heat radiation paster.Described heat radiation paster has with the low thermal resistance linkage interface of cover glass tube circle end-blocking inner surface and has heat transfer interface with middle sheet.
Can also make described heat converge and contain the low thermal resistance linkage interface of locating with inner glass tube or bottom, heat pipe hot junction and contain some outward flanging punchings; The matching of the shape of described heat radiation paster outer surface and cover glass tube circle end-blocking inner surface, described heat radiation paster is that have with heat transfer interface middle sheet is some to the in-flanges punching.
Can also make heat converge with the heat radiation paster between the high thermal resistance of employing jump ring be connected; Perhaps the cover glass tube tail end inboard with heat pipe hot junction or inner glass tube tail end between be connected by a high thermal resistance of jump ring.
Can also make described thermodynamic-driven device for by a temperature-sensitive permanent-magnet steel and the temperature-sensitive permanent-magnet steel driving element that soft iron constitutes.The temperature-sensitive permanent-magnet steel is connected with inner glass tube or heat pipe hot junction low thermal resistance.Above the temperature-sensitive permanent-magnet steel shadow shield is set.Soft iron can be moved forward and backward along the heat collecting element direction of axis line by both sides plate washer constraint.Soft iron is in transmission connection by transmission steel wire and middle sheet.Middle sheet has the wedge shape heat transfer interface.The other end of middle sheet is connected with spring fastenings by spring.
Can also make that described thermodynamic-driven device is a bimetal leaf thermodynamic-driven device that is connected with inner glass tube or heat pipe hot junction low thermal resistance or memory alloy actuator spare or bellows driving element.
Beneficial effect of the present invention: the employing of sheet vacuum heat-pipe heat collecting element decompression sky solarization protector was collected the inside heat pipe two phase flow heat transfer was located, blocked to liquid refrigerant in bottom, heat pipe hot junction sky solarization protection design in the heat radiation of place, heat pipe bottom during the present invention was embedded, and heat radiation power can reduce greatly.For example: a heat collecting element of exporting 70 watts, 3 milliliters of working medium filling weights.Employing dispels the heat to prevent the technical scheme of heat pipe bombing at the uniform controlled heat transfer path of heat pipe hot end surface, the heat radiation power of controlled heat transfer path is 40 watts, the inside heat pipe temperature is the highest to be also had more than 150 ℃, corresponding water vapor pressure still can reach 4.8 atmospheric pressure, exceeds the voltage endurance capability of 58 millimeters of external diameters, 1.8 millimeters glass tubes of wall thickness.The present invention is for the heat collecting element of 70 watts of same outputs, and the empty protector that shines of decompression only needs 10 watts of heat radiation powers, just can come the water of heat absorbing glass inside heat pipe when the sky solarization takes place with the speed of 0.25 ml/min.Empty shine begin about 6 minutes after, though at that time heat pipe on the sunny side the temperature on surface raise about 30 ℃, the heat pipe hot junction inner except the place, bottom all dry, vapour pressure less than 1.5 atmospheric pressure.The heat radiation power of saving 30 watts makes cost have bigger reduction, minimizing heat transfer path that venting 75% and the reliability of vacuum heat-insulating layer are increased substantially.Key is the bombing problem that can effectively solve the major diameter heat pipe.The present invention adopts a small-power heat transfer path just can guarantee that the inside heat pipe water vapor pressure is no more than 2 atmospheric pressure all the time, and does not influence the operate as normal of heat collecting element fully.
Heat is converged and the heat radiation paster adopts the flange punching as heat transfer interface, and intensity height, dimensional uniformity are good, easy to make.
Adopt the high thermal resistance of jump ring to be connected in one between the hot remittance of order and the heat radiation paster, convenient embedded installation also can have the positioning function of the stainless steel jump ring that cooperates with cover glass tube for inner glass tube concurrently.
The splendid water of copper heat pipe available heat physical property is made working medium, but when sky shone, heat pipe can lose efficacy because copper can creep take place, and this problem never has way and solves.The present invention also provides an effectively empty counter-measure of shining for present widely used copper heat collector tube element.
Temperature-sensitive permanent-magnet steel driving element high conformity, good reproducibility, control accuracy height, long service life, performance are satisfactory.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 arranges the empty structural representation of facing that shines protector of embedded middle sheet vacuum heat-pipe heat collecting element decompression in vacuum heat-insulating layer.
Fig. 2 is that Fig. 1 looks the sectional structure schematic diagram on the left side at heat radiation paster 4 places.
Fig. 3 is the light-pipe structure gravity assisted heat pipe structural representation of a tiltably-mounted.
1. heat pipes among the figure; 2. cover glass tube; 3. inner glass tube; 4. heat radiation paster; 5. heat is converged; 6. thermodynamic-driven device; 7. middle sheet; 8. to the in-flanges punching; 9. outward flanging punching; 10. wire circlip; 11. temperature-sensitive permanent-magnet steel; 12. soft iron; 13. thermal conductance; 14. shadow shield; 15. plate washer; 16. transmission steel wire; 17. wedge shape heat transfer interface; 18. spring; 19. spring fastenings; 20. connecting plate.
The specific embodiment
Fig. 1 and Fig. 2 provide one embodiment of the invention.
Among Fig. 1 and Fig. 2, in cover glass tube 2 tail ends and the vacuum heat-insulating layer between inner glass tube 3 tail ends of an all-glass vacuum heat collector tube pipe, along the empty protection heat transfer path that shines of circumferential uniform four the middle sheet vacuum heat-pipe heat collecting element decompressions of ring vaccum thermal insulation layer.Form an empty protector that shines of embedded middle sheet vacuum heat-pipe heat collecting element decompression.Described empty shine the protection heat transfer path with heat radiation paster 4, heat converge 5, thermodynamic-driven device 6, middle sheet 7 compositions that are in transmission connection with thermodynamic-driven device 6.The shape kissing of the shape of heat radiation paster 4 outer surfaces and cover glass tube 2 circle end-blocking inner surfaces merges and contains to in-flanges punching 8.0.22 millimeter of heat radiation paster 4 thickness, 40 millimeters of width.Heat radiation paster 4 usefulness jump rings overlay in cover glass tube 2 inwalls.Heat is converged 0.22 millimeter of 5 thickness, 40 millimeters of width, and low thermal resistance is connected in inner glass tube 3 to be place, bottom, heat pipe 1 hot junction and to contain outward flanging punching 9.Heat remittance 5 usefulness jump rings overlay on inner glass tube 3.Heat radiation paster 4, heat are converged and are connected as one convenient embedded assembling with wire circlip 10 high thermal resistances between 5.Thermodynamic-driven device 6 is by a temperature-sensitive permanent-magnet steel 11 and the temperature-sensitive permanent-magnet steel driving element that soft iron 12 constitutes, and the temperature-sensitive permanent-magnet steel 11 of thermodynamic-driven device 6 is connected with inner glass tube 3 low thermal resistances by thermal conductance 13.0.22 millimeter of thermal conductance 13 thickness, 20 millimeters of width, be rolled into tubular, overlay on inner glass tube 3 with jump ring.Shadow shield 14 is set above the temperature-sensitive permanent-magnet steel 11, prevents that the temperature-sensitive permanent-magnet steel 11 of sunshine direct projection in being in vacuum heat-insulating layer from making its misoperation.Soft iron 12 can be moved forward and backward along the heat collecting element direction of axis line by 15 constraints of both sides plate washer.Soft iron 12 is in transmission connection by transmission steel wire 16 and middle sheet 7 left ends.In 2 millimeters of 0.22 millimeter of sheet 7 thickness, width be about half of vacuum heat-insulation layer thickness.Be manufactured with wedge shape heat transfer interface 17 on the middle sheet 7.The right-hand member of middle sheet 7 is connected with spring fastenings 19 by spring 18.Spring fastenings 19 is fixed in the heat remittance 5.Thermal conductance 13, heat remittance 5 connect as one by the narrower high thermal resistance of connecting plate 20 rigidity of a slice between the two.
The making material of heat radiation paster 4, heat remittance 5, middle sheet 7, thermal conductance 13, shadow shield 14, plate washer 15 comprises steel plate, aluminium sheet and copper coin.
The operation principle of Fig. 1 and Fig. 2 embodiment: when embedding is equipped with that the empty heat collecting element that shines protector of described decompression normally is in tilted layout and when not being in empty solarization state; sunshine is converted to heat energy at the inner glass tube absorbing film, and heat energy passes to inside heat pipe working medium by inner glass tube and makes it vaporization.Because heat pipe 1 cold junction temperature is lower than 95 ℃, working substance steam flows to the cold junction heat release and condenses into that liquid returns the hot junction under the gravity effect and the vaporization of being heated once again under differential pressure action ... so go round and begin again and realize the two phase flow heat transfer circulation.At this moment, temperature-sensitive permanent-magnet steel 11 temperature that are connected with inner glass tube 3 low thermal resistances by thermal conductance 13 do not reach the loss of excitation temperature, temperature-sensitive permanent-magnet steel 11 hold soft iron 12 with middle sheet 7 toward Zolas, the wedge shape heat transfer interface 17 in making on the sheet 7 does not contact heat radiation paster 4 and heat is converged 5(shown in broken line triangle among Fig. 2).Empty solarization protection heat transfer path is in closes adiabatci condition.The heat collecting element normal heating.
When heat collecting element is in empty solarization state; temperature-sensitive permanent-magnet steel 11 temperature raise and for example reach 100 ℃ critical transfer point magnetic force disappearance; spring 18 is turned right soft iron 12 and middle sheet 7 together and is drawn; make on the sheet 7 wedge shape heat transfer interface 17 simultaneously low thermal resistance connect converge outward flanging punching 9(on 5 shown in solid line triangle among Fig. 2 to in-flanges punching 8 and heat on the heat radiation paster 4), the empty protection heat transfer path that shines is in the heat conduction state of opening.Inner glass tube 3 is that the heat energy at place, bottom, heat pipe 1 hot junction is lost to environment continually by sky solarization protection heat transfer path.The steam of heat pipe 1 inside flows to bottom place and condenses and be collected in the place, bottom under differential pressure action, clamp down on heat pipe 1 internal pressure and be in low level all the time, guarantees that heat collecting element can bombing not realize that the sky of heat collecting element shines protection.Because the constraint of plate washer 15, maximum 2 millimeters of the distance that soft iron 12 moves right can attract soft iron 12 to return when temperature-sensitive permanent-magnet steel 11 magnetic force recover after can guaranteeing so once again.
Later on after heat collecting element breaks away from empty solarization state; temperature-sensitive permanent-magnet steel 11 temperature reduction magnetic force recovers and attracts soft iron 12 to make the outward flanging punching 9 in in-flanges punching 8 and heat remittance 5 on the wedge shape heat transfer interface 17 on the middle sheet 7 and the paster 4 that dispels the heat disengage (shown in broken line triangle among Fig. 2); the empty protection heat transfer path that shines is in and closes adiabatci condition, but heat collecting element operate as normal again.
Fig. 1 and Fig. 2 embodiment are equally applicable to plug-in type heat collector tube element, and at this moment, inner glass tube 3 itself is not heat pipe, but are connected with a plug-in type heat pipe or low thermal resistance is connected.It is empty, and to shine operation principle of protection similar, also be by temperature-sensitive permanent-magnet steel 11 when sky shines/temperature when non-NULL shines raises/reduces, magnetic force disappears/recovers and changes the empty state that shines the protection heat transfer path of decompression, reach to make heat collecting element obtain the empty purpose of protecting of shining.
Change the thermodynamic-driven device 6 among Fig. 1 and Fig. 2 into bimetal leaf thermodynamic-driven device or change memory alloy actuator spare into or change the bellows driving element in the time of also can realizing empty the solarization by changing the empty state that shines the protection heat transfer path of decompression; make on the sheet 7 wedge shape heat transfer interface 17 simultaneously low thermal resistance connect and converge outward flanging punching 9 on 5 to in-flanges punching 8 and heat on the heat radiation paster 4, working medium is locked in place, bottom, heat pipe 1 hot junction realizes that the sky of heat pipe 1 inner pressure relief shines protection mechanism.
Claims (5)
1. the empty protector that shines of sheet vacuum heat-pipe heat collecting element decompression in embedded is made up of the empty protection heat transfer path that shines of sheet vacuum heat-pipe heat collecting element decompression in more than, is arranged in the vacuum heat-insulating layer of vacuum heat-pipe heat collecting element tail end; Described empty shine the protection heat transfer path by heat radiation paster, Re Hui, have and be in transmission connection with the thermodynamic-driven device of heat collecting element heat pipe or inner glass tube heat transfer linkage interface, with the thermodynamic-driven device or form with the integrally manufactured middle sheet of thermodynamic-driven device; Described sky shines protects heat transfer path to have two kinds of stable states: the unlatching heat conduction state when middle sheet conducts heat simultaneously and connects the heat remittance and dispel the heat paster; In sheet close adiabatci condition when conduct heat not connecting heat simultaneously and converging with the heat radiation paster, it is characterized in that described heat radiation paster has with the low thermal resistance linkage interface of place, cover glass tube circle end-blocking bottom inner surface and has heat transfer interface with middle sheet.
According to claim 1 described embedded in the empty protector that shines of sheet vacuum heat-pipe heat collecting element decompression, it is characterized in that described heat is converged contains with the low thermal resistance linkage interface at inner glass tube or place, bottom, heat pipe hot junction and contains some outward flanging punchings; The matching of the shape of described heat radiation paster outer surface and cover glass tube circle end-blocking inner surface, described heat radiation paster is that have with heat transfer interface middle sheet is some to the in-flanges punching.
According to claim 1 described embedded in the empty protector that shines of sheet vacuum heat-pipe heat collecting element decompression, it is characterized in that described heat converge with the heat radiation paster between the high thermal resistance of employing jump ring be connected; Perhaps the cover glass tube tail end inboard with heat pipe hot junction or inner glass tube tail end between be connected by a high thermal resistance of jump ring.
4. according to the empty protector that shines of the described embedded middle sheet vacuum heat-pipe heat collecting element decompression of claim 1, it is characterized in that described thermodynamic-driven device is by a temperature-sensitive permanent-magnet steel and the temperature-sensitive permanent-magnet steel driving element that soft iron constitutes; The temperature-sensitive permanent-magnet steel is connected with inner glass tube or heat pipe hot junction low thermal resistance; Contain shadow shield above the temperature-sensitive permanent-magnet steel; Soft iron can be moved forward and backward along the heat collecting element direction of axis line by both sides plate washer constraint; Soft iron is in transmission connection by transmission steel wire and middle sheet; Middle sheet has the wedge shape heat transfer interface; The other end of middle sheet is connected with spring fastenings by spring.
5. according to the empty protector that shines of the described embedded middle sheet vacuum heat-pipe heat collecting element decompression of claim 1, it is characterized in that described thermodynamic-driven device is a bimetal leaf thermodynamic-driven device that is connected with inner glass tube or heat pipe hot junction low thermal resistance or memory alloy actuator spare or bellows driving element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310141782.6A CN103234287B (en) | 2013-04-22 | 2013-04-22 | Embedded type straight-barrel vacuum heat pipe heat collecting element pressure-reducing idle sunning protector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310141782.6A CN103234287B (en) | 2013-04-22 | 2013-04-22 | Embedded type straight-barrel vacuum heat pipe heat collecting element pressure-reducing idle sunning protector |
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| Publication Number | Publication Date |
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| CN103234287A true CN103234287A (en) | 2013-08-07 |
| CN103234287B CN103234287B (en) | 2015-01-07 |
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| CN201310141782.6A Expired - Fee Related CN103234287B (en) | 2013-04-22 | 2013-04-22 | Embedded type straight-barrel vacuum heat pipe heat collecting element pressure-reducing idle sunning protector |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5694151A (en) * | 1979-12-27 | 1981-07-30 | Sharp Corp | Selective heat absorption plane at heat collector |
| JPS59125358A (en) * | 1982-12-31 | 1984-07-19 | Akira Nadaguchi | Atmospheric heat utilizing device |
| CN201352017Y (en) * | 2008-11-05 | 2009-11-25 | 徐利明 | Solar heat collector with glass shade for outputting heat energy |
| CN101762083A (en) * | 2008-11-05 | 2010-06-30 | 施侃超 | Diathermanous solar heat collecting element of radial elastic metal body for cover glass |
| CN102003816A (en) * | 2009-09-03 | 2011-04-06 | 施国庆 | Empty sunning resistant heat collecting element of all-glass vacuum heat pipe |
| CN102003805A (en) * | 2009-09-03 | 2011-04-06 | 施国庆 | Heat accumulation type temperature control vacuum heat collection element without thermal short circuit |
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2013
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5694151A (en) * | 1979-12-27 | 1981-07-30 | Sharp Corp | Selective heat absorption plane at heat collector |
| JPS59125358A (en) * | 1982-12-31 | 1984-07-19 | Akira Nadaguchi | Atmospheric heat utilizing device |
| CN201352017Y (en) * | 2008-11-05 | 2009-11-25 | 徐利明 | Solar heat collector with glass shade for outputting heat energy |
| CN101762083A (en) * | 2008-11-05 | 2010-06-30 | 施侃超 | Diathermanous solar heat collecting element of radial elastic metal body for cover glass |
| CN102003816A (en) * | 2009-09-03 | 2011-04-06 | 施国庆 | Empty sunning resistant heat collecting element of all-glass vacuum heat pipe |
| CN102003805A (en) * | 2009-09-03 | 2011-04-06 | 施国庆 | Heat accumulation type temperature control vacuum heat collection element without thermal short circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103234287B (en) | 2015-01-07 |
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