CN103234287B - 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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- CN103234287B CN103234287B CN201310141782.6A CN201310141782A CN103234287B CN 103234287 B CN103234287 B CN 103234287B CN 201310141782 A CN201310141782 A CN 201310141782A CN 103234287 B CN103234287 B CN 103234287B
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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
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 embedded middle vacuum thermal pipe heat collection element pressure reduction stagnation protector.
Background technology
Vacuum heat collection pipe arranges vacuum heat-insulating layer between its cover glass tube and inner glass tube, can manufacture the vacuum solar water heater that winter also can provide domestic hot-water.With the solar water heater of heat-pipe vacuum heat collecting pipe manufacture have more anhydrous Energy Efficiency Ratio in pipe high, meet safe drinking water standard, single tube damages the advantage such as in the same old way to work.Therefore.In pipe, anhydrous solar energy evacuated water-both with hot pipe will likely capture the increasing market share.
Adopt integrated glass heat pipe to have can to melt with cover glass tube seal, glass heat pipe surperficial can directly make absorbing film heat transfer link few, the splendid water of thermophysical property can be adopted to make the advantages such as working medium.
But during air drying, heat collecting element inside heat pipe temperature can reach 230 DEG C, saturated vapor pressure corresponding to this temperature is 28.53 atmospheric pressure, and ratio and the working medium volumetric ratio of corresponding working medium filling weight and heat pipe volume are 1.1%, and namely every 1 liter capacity has 11 ml waters.
The pressure of inside heat pipe when can reduce air drying by reducing working medium filling weight, for device of working medium: when working medium filling weight/heat pipe volume rate is reduced to 2 milliliters/1000 milliliters from 0.5% when 5 milliliters/1000 milliliters 0.2%, correspondingly its highest saturated vapor pressure is reduced to about 3.7 atmospheric pressure of 140 DEG C from about 10 atmospheric pressure of 180 DEG C, and when inside heat pipe continues to be warming up to 180 DEG C from 140 DEG C about 3.7 atmospheric most high-vapor-pressures, internal pressure only has 4 atm higher.But working medium filling weight can not only decide with internal pressure during air drying sometimes.For a working medium filling weight/heat pipe volume rate be 0.2%, the heat pipe of internal capacity 1000 milliliters, length 2000 millimeters, if be no more than 4 atmospheric pressure, then working medium filling weight about 1.8 milliliters in order to internal pressure when making air drying 230 DEG C.Even if problem is described heat pipe is light-pipe structure, when tilting about 45 degree of work, the condensed water of cold junction, the circulating water in hot junction add that the water yield 0.353 milliliter of sum of 85 DEG C of water vapours can far more than 1.8 milliliters.
Normally work to meet heat pipe and make working medium filling weight/heat pipe volume rate be greater than 0.2% even 0.3%, and guarantee glass heat pipe not because air drying and bombing, empty sun protection measure must be taked.
Chinese invention patent 2009101951003 anti-air drying all-glass vacuum heat collector tube element; disclose a kind of empty sun protection all-glass vacuum heat collector tube element; form by arranging controlled heat transfer path between vacuum heat collection element absorber and cover glass-tube; controlled heat transfer path is made up of movable heat transfer piece and actuator, it is characterized in that the heating power transducing actuator containing being connected with vacuum heat collection element absorber low thermal resistance.Because this patent is not special in gravity assisted heat pipe heat collecting element, thus specific aim is not strong; The uniformity of the original product of bimetal leaf heating power transducing actuator that it adopts is just bad, after repeatedly temperature distortion, restorable ability can reduce again, 20 year projected life that operating point setting, control variables that its control system born is correlated with input, compare, transducing and Power supply and n-back test far can not normally effectively work because precision is affected heat collecting element is possible.
Fig. 3 provides the light-pipe structure gravity assisted heat pipe structural representation of a tiltably-mounted.
In Fig. 3, heat pipe 1 is made up of shell and internal working medium.Its operation principle is: heat energy hot junction from below namely side by side inwards arrows place input, the working medium at heat pipe 1 inner bottom place is heated vaporization, steam is under the effect of pressure reduction, upwards advance to heat pipe cold junction and arrow side by side outwards marked position release heat energy and be supplied to load and be condensed into liquid and be back to cold junction below under gravity, again to be heated vaporization in hot junction working medium ..., constantly circulation realizes two phase flow heat transfer circulation thus.Heat pipe has excellent heat-transfer capability, heat flow density ability to transform and isothermal characteristics.If heat pipe 1 hot junction inputs 100 watts, then the output of its cold junction is the highest can reach 97 watts even higher.
If attempt only to input heat energy from below to the heat pipe 1 of Fig. 3, and do not take heat energy away, then heat pipe 1 steam inside pressure can sharply rise.If heat pipe 1 adopts water as working medium and abundant, then, when heat pipe 1 temperature reaches 230 DEG C, inner maximum pressure can reach 28.53 atmospheric pressure.
If attempt the heating from taking out heat energy a little more than heat pipe 1 bottom local a section of whole heat pipe 1 length 3% of accounting for for example from bottom comprehensively from top to bottom of the heat pipe 1 of Fig. 3 below, namely only make bottom account for the position of 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 cold junction below.When for example using water as working medium, keep the temperature 100 DEG C of overlapping cold junction below heat pipe 1, even if then other parts are heated to 230 DEG C above, because the liquid refrigerant of heat pipe 1 inside is all collected in described overlapping cold junction, heat pipe 1 hot junction above except described overlapping cold junction is whole dry owing to not having working medium to supplement, and two phase flow heat transfer mechanism has not existed.The steam pressure of heat pipe 1 inside is also only had an appointment 1 atmospheric pressure.
An example of overlapping cold junction be thermotube wall with absorbing film, absorb sunshine and input as heat energy, connect described thermotube wall with Thermal Conduction Equipment low thermal resistance and by heat energy transfer simultaneously.
This make that heat pipe 1 is in tilted layout, heat energy inputs above heat pipe 1 and only with below a bit of design as overlapping cold junction perhaps there is no what meaning in other occasions, but for the empty sun protection of solar collection element, because only need minimum a part of heat radiation power---when this part heat radiation power is used for guaranteeing that air drying occurs, the peak that empty sun protection device starts the initial stage inside heat pipe vapour pressure worked is no more than setting value; This part heat radiation power is also greater than the heat energy input power of described overlapping cold junction as hot junction---thus have radiating element volume compact, dependable performance, heat radiation power little, on the venting of vacuum heat-insulating layer less, on absorber to block impact little and heat collecting element tail end can be utilized as the advantage of heat dissipation interface.
Can see, the heat radiation power required for less, the described empty sun protection device of the area of overlapping cold junction is also less, more favourable.Actual heat collecting element needs the device of tail box and so on to settle.Tail box can hide the tail end of heat collecting element.Overlapping cold junction is not belonged to by the part that tail box hides.Why also can use overlapping cold junction; be because some heat collecting element empty sun protection device be relatively applicable to being installed on vacuum heat-insulating layer drum-shaped section or; heat collection element cover glass pipe is with necking segment and be adopt to assemble inner glass tube after necking segment is formed, and then draws tail pipe to be called for short the technique of post-tensioning tail pipe to cover glass tube circle envelope.If the round end-blocking that post-tensioning tail pipe technique is formed is not suitable for heat radiation, just needs utilization is dispelled the heat from described round end-blocking cover glass tube drum-shaped section up.The heat pipe corresponding with described drum-shaped section or inner glass tube end section belong to overlapping cold junction.
Overlapping cold junction is the decompression empty sun protection design based on blocking the circulation of heat pipe two phase flow heat transfer, and this designs the essential distinction of controllable heat dissipation passage with the non-decompression empty sun protection of above-mentioned Chinese invention patent 2009101951003 anti-air drying all-glass vacuum heat collector tube element.
China's 912050845 utility model electric cooker automatic magnetic temperature detect switch (TDS)s, describe one and utilize pyromagnetic force inverting element operation principle.
Summary of the invention
The object of the invention is to provide embedded middle vacuum thermal pipe heat collection element pressure reduction stagnation protector.
The present invention solves the technical scheme that its technical problem is taked: with one with upper vacuum heat-pipe heat collecting element decompression empty sun protection heat transfer path; form an embedded middle vacuum thermal pipe heat collection element pressure reduction stagnation protector, be arranged in the vacuum heat-insulating layer of vacuum heat-pipe heat collecting element tail end.Described empty sun protection heat transfer path by the paster that dispels the heat, heat sink, with heat collecting element heat pipe or inner glass tube conduct heat linkage interface thermodynamic-driven device, with thermodynamic-driven device be in transmission connection or integrally manufactured with thermodynamic-driven device in sheet form.Described empty sun protection heat transfer path has two kinds of stable states: middle sheet conducts heat simultaneously and connects heat sink and unlatching heat conduction state during heat radiation paster; Middle different time heat transfer connect heat sink with heat radiation paster time closedown adiabatci condition.Described heat radiation paster with the low thermal resistance linkage interface with cover glass tube circle end-blocking inner surface and with the heat transfer interface of middle.
Described heat sink can also be made to contain and also to contain some outward flanging punchings with the low thermal resistance linkage interface of inner glass tube or heat pipe hot junction bottom end; The shape of the shape of described heat radiation paster outer surface and cover glass tube circle end-blocking inner surface matches, described heat radiation paster be some to in-flanges punching with the heat transfer interface of middle.
Can also make between heat sink with heat radiation paster adopts jump ring high thermal resistance to be connected; Or be connected by a jump ring high thermal resistance inside cover glass tube tail end with between heat pipe hot junction or inner glass tube tail end.
Described thermodynamic-driven device can also be made to be the thermal sensitive permanent magnetic steel driving element be made up of one piece of thermal sensitive permanent magnetic steel and one block of soft iron.Thermal sensitive permanent magnetic steel is connected with inner glass tube or heat pipe hot junction low thermal resistance.Above thermal sensitive permanent magnetic steel, shadow shield is set.Soft iron can move forward and backward along heat collecting element direction of axis line by the constraint of both sides plate washer.Soft iron is in transmission connection by transmission steel wire and middle.Middle with wedge shape heat transfer interface.The other end of middle is connected with spring fastenings by spring.
Described thermodynamic-driven device can also be made to be a bimetal leaf thermodynamic-driven device or memory alloy actuator part or bellows driving element be connected with inner glass tube or heat pipe hot junction low thermal resistance.
Beneficial effect of the present invention: the embedded middle vacuum thermal pipe heat collection element pressure reduction stagnation protector of the present invention adopts collects liquid refrigerant in heat pipe hot junction bottom end, the empty sun protection design blocking inside heat pipe two phase flow heat transfer in the heat radiation of heat pipe bottom end, and heat radiation power can reduce greatly.Citing: one exports the heat collecting element of 70 watts, working medium filling weight 3 milliliters.Adopt the technical scheme preventing heat pipe bombing in the uniform controlled heat transfer path heat radiation of heat pipe hot end surface, the heat radiation power of controlled heat transfer path is 40 watts, inside heat pipe temperature is the highest also has more than 150 DEG C, corresponding water vapor pressure still can reach 4.8 atmospheric pressure, exceeds the voltage endurance capability of external diameter 58 millimeters, wall thickness 1.8 millimeters of glass tubes.The present invention is for the same heat collecting element exporting 70 watts, and decompression empty sun protection device only needs 10 watts of heat radiation powers, just can carry out the water of heat absorbing glass inside heat pipe with the speed of 0.25 ml/min when air drying occurs.After air drying starts about 6 minutes, although the temperature on heat pipe on the sunny side surface raises about 30 DEG C at that time, inside, heat pipe hot junction except bottom end all dry, vapour pressure be less than 1.5 atmospheric pressure.The heat radiation power saving 30 watts makes cost have larger reduction, reduce heat transfer path to the venting 75% of vacuum heat-insulating layer and reliability increase substantially.Key is the bombing problem that effectively can solve major diameter heat pipe.The present invention adopt a small-power heat transfer path just can ensure inside heat pipe water vapor pressure is no more than 2 atmospheric pressure all the time, and do not affect the normal work of heat collecting element completely.
Heat sink and heat radiation paster adopt flange punching as heat transfer interface, and intensity is high, dimensional uniformity good, easy to make.
Making between heat sink and heat radiation paster adopts jump ring high thermal resistance to be connected in one, and facilitates installation by adhering also can have the positioning function of the stainless steel jump ring coordinated with cover glass tube for inner glass tube concurrently.
Copper heat pipe can make working medium with the water that thermophysical property is splendid, but when air drying, heat pipe can because copper can creep occur and lose efficacy, and this problem never has way and solves.The present invention also provides an effective air drying counter-measure for now widely used copper heat collector tube element.
Thermal sensitive permanent magnetic steel driving element uniformity is good, reproducible, control accuracy is high, long service life, performance are satisfactory.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 be embedded middle vacuum thermal pipe heat collection element pressure reduction stagnation protector be set in vacuum heat-insulating layer face structural representation.
Fig. 2 is that Fig. 1 looks sectional structure schematic diagram on the left side at heat radiation paster 4 place.
Fig. 3 is the light-pipe structure gravity assisted heat pipe structural representation of a tiltably-mounted.
1. heat pipes in figure; 2. cover glass tube; 3. inner glass tube; 4. dispel the heat paster; 5. heat sink; 6. thermodynamic-driven device; 7. sheet in; 8. to in-flanges punching; 9. outward flanging punching; 10. wire circlip; 11. thermal sensitive permanent magnetic steel; 12. soft irons; 13. thermal conductances; 14. shadow shields; 15. plate washers; 16. transmission steel wires; 17. wedge shape heat transfer interfaces; 18. springs; 19. spring fastenings; 20. connecting plates.
Detailed description of the invention
Fig. 1 and Fig. 2 provides one embodiment of the invention.
In Fig. 1 and Fig. 2, in the vacuum heat-insulating layer between cover glass tube 2 tail end and inner glass tube 3 tail end of an all-glass vacuum solar energy collection tube, annularly circumferential uniform four the middle sheet vacuum heat-pipe heat collecting element decompression empty sun protection heat transfer paths of vacuum heat-insulating layer.Form an embedded middle vacuum thermal pipe heat collection element pressure reduction stagnation protector.Described empty sun protection heat transfer path heat radiation paster 4, heat sink 5, thermodynamic-driven device 6, the middle sheet 7 be in transmission connection with thermodynamic-driven device 6 form.The shape of heat radiation paster 4 outer surface and the shape kissing of cover glass tube 2 circle end-blocking inner surface merge and contain to in-flanges punching 8.Heat radiation paster 4 thickness 0.22 millimeter, width 40 millimeters.Heat radiation paster 4 jump ring overlays in cover glass tube 2 inwall.Heat sink 5 thickness 0.22 millimeter, width 40 millimeters, low thermal resistance is connected to inner glass tube 3 i.e. heat pipe 1 hot junction bottom end and contains outward flanging punching 9.Heat sink 5 jump ring overlays on inner glass tube 3.Connect as one by the high thermal resistance of wire circlip 10 between heat radiation paster 4, heat sink 5 and facilitate embedded assembling.Thermodynamic-driven device 6 is the thermal sensitive permanent magnetic steel driving element be made up of one piece of thermal sensitive permanent magnetic steel 11 and one block of soft iron 12, and the thermal sensitive permanent magnetic steel 11 of thermodynamic-driven device 6 is connected with inner glass tube 3 low thermal resistance by thermal conductance 13.Thermal conductance 13 thickness 0.22 millimeter, width 20 millimeters, be rolled into tubular, overlay on inner glass tube 3 with jump ring.Thermal sensitive permanent magnetic steel 11 arranges shadow shield 14 above, prevents the thermal sensitive permanent magnetic steel 11 that sunshine direct projection is being in vacuum heat-insulating layer from making its misoperation.Soft iron 12 can move forward and backward along heat collecting element direction of axis line by both sides plate washer 15 constraint.Soft iron 12 is in transmission connection by transmission steel wire 16 and middle 7 left ends.Middle 7 thickness 0.22 millimeter, width 2 millimeters are about the half of vacuum heat-insulation layer thickness.Middle 7 is manufactured with wedge shape heat transfer interface 17.The right-hand member of middle 7 is connected with spring fastenings 19 by spring 18.Spring fastenings 19 is fixed in heat sink 5.Thermal conductance 13, heat sink 5 are connected as one by the connecting plate 20 rigidity high thermal resistance that a slice is narrower between the two.
Heat radiation paster 4, heat sink 5, middle 7, thermal conductance 13, shadow shield 14, plate washer 15 making material comprise steel plate, aluminium sheet and copper coin.
The operation principle of Fig. 1 and Fig. 2 embodiment: when embedding the heat collecting element normal dip being provided with described decompression empty sun protection device and arranging and be not in air drying state; sunshine is converted to heat energy on 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 DEG C, working substance steam flows to cold junction heat release and condenses into liquid and returns to hot junction under gravity and vaporization of being heated once again under differential pressure action ... so go round and begin again and realize two phase flow heat transfer circulation.Now, thermal sensitive permanent magnetic steel 11 temperature be connected with inner glass tube 3 low thermal resistance by thermal conductance 13 does not reach loss of excitation temperature, thermal sensitive permanent magnetic steel 11 holds soft iron 12 by middle 7 toward Zola, makes the wedge shape heat transfer interface 17 on middle 7 not contact heat radiation paster 4 and heat sink 5(as shown in broken line triangle in Fig. 2).Empty sun protection heat transfer path is in closedown adiabatci condition.Heat collecting element normal heating.
When heat collecting element is in air drying state; thermal sensitive permanent magnetic steel 11 temperature raises the Determination of Critical Transition Point magnetic force for example reaching 100 DEG C and disappears; soft iron 12 is turned right and is drawn by spring 18 together with middle 7; make the wedge shape heat transfer interface 17 on slices 7 simultaneously low thermal resistance connect on heat radiation paster 4 to the outward flanging punching 9(in in-flanges punching 8 and heat sink 5 as shown in solid triangle in Fig. 2), empty sun protection heat transfer path is in opens heat conduction state.The inner glass tube 3 i.e. heat energy of heat pipe 1 hot junction bottom end is lost to environment continually by empty sun protection heat transfer path.The steam of heat pipe 1 inside flows to bottom end and condenses and be collected in bottom end under differential pressure action, clamps down on heat pipe 1 internal pressure and is in low level all the time, ensures that heat collecting element bombing can not realize the empty sun protection of heat collecting element.Due to the constraint of plate washer 15, maximum 2 millimeters of the distance that soft iron 12 moves right, can attract to return by soft iron 12 when after can ensureing like this, thermal sensitive permanent magnetic steel 11 magnetic force recovers once again.
Later after heat collecting element departs from air drying state; thermal sensitive permanent magnetic steel 11 temperature reduces magnetic force and recovers and attract soft iron 12 to make the wedge shape heat transfer interface 17 on middle 7 and disengaging (as shown in broken line triangle in Fig. 2) to the outward flanging punching 9 in in-flanges punching 8 and heat sink 5 on heat radiation paster 4; empty sun protection heat transfer path is in closedown adiabatci condition, and heat collecting element can normally work again.
Fig. 1 and Fig. 2 embodiment is equally applicable to plug-in type heat collector tube element, and at this moment, inner glass tube 3 itself is not heat pipe, but is connected with a plug-in type heat pipe or low thermal resistance is connected.The operation principle of its empty sun protection is similar, be also by thermal sensitive permanent magnetic steel 11 when air drying/non-air drying time temperature raises/reduces, magnetic force disappears/recover and change the state of decompression empty sun protection heat transfer path, reach the object making heat collecting element obtain empty sun protection.
Change the thermodynamic-driven device 6 in Fig. 1 and Fig. 2 into bimetal leaf thermodynamic-driven device or change memory alloy actuator part into or change the state passing through to change decompression empty sun protection heat transfer path when bellows driving element also can realize air drying into; make the wedge shape heat transfer interface 17 on slices 7 simultaneously low thermal resistance connect on heat radiation paster 4 to the outward flanging punching 9 in in-flanges punching 8 and heat sink 5, working medium is locked in the empty sun protection mechanism that heat pipe 1 hot junction bottom end realizes heat pipe 1 inner pressure relief.
Claims (5)
1. embedded middle vacuum thermal pipe heat collection element pressure reduction stagnation protector, forms with upper vacuum heat-pipe heat collecting element decompression empty sun protection heat transfer path by one, is arranged in the vacuum heat-insulating layer of vacuum heat-pipe heat collecting element tail end; Described empty sun protection heat transfer path by the paster that dispels the heat, heat sink, with heat collecting element heat pipe or inner glass tube conduct heat linkage interface thermodynamic-driven device, with thermodynamic-driven device be in transmission connection or integrally manufactured with thermodynamic-driven device in sheet form; Described empty sun protection heat transfer path has two kinds of stable states: middle sheet conducts heat simultaneously and connects heat sink and unlatching heat conduction state during heat radiation paster; Middle different time heat transfer connect heat sink and closedown adiabatci condition during heat radiation paster, it is characterized in that described heat radiation paster with the low thermal resistance linkage interface with cover glass tube circle end-blocking bottom end inner surface and with the heat transfer interface of middle.
2., according to embedded middle vacuum thermal pipe heat collection element pressure reduction stagnation protector according to claim 1, it is characterized in that described heat sink contains and also contain some outward flanging punchings with the low thermal resistance linkage interface of inner glass tube or heat pipe hot junction bottom end; The shape of the shape of described heat radiation paster outer surface and cover glass tube circle end-blocking inner surface matches, described heat radiation paster be some to in-flanges punching with the heat transfer interface of middle.
3., according to embedded middle vacuum thermal pipe heat collection element pressure reduction stagnation protector according to claim 1, it is characterized in that adopting jump ring high thermal resistance to be connected between described heat sink with heat radiation paster; Or be connected by a jump ring high thermal resistance inside cover glass tube tail end with between heat pipe hot junction or inner glass tube tail end.
4., according to embedded middle vacuum thermal pipe heat collection element pressure reduction stagnation protector according to claim 1, it is characterized in that described thermodynamic-driven device is the thermal sensitive permanent magnetic steel driving element be made up of one piece of thermal sensitive permanent magnetic steel and one block of soft iron; Thermal sensitive permanent magnetic steel is connected with inner glass tube or heat pipe hot junction low thermal resistance; Containing shadow shield above thermal sensitive permanent magnetic steel; Soft iron can move forward and backward along heat collecting element direction of axis line by the constraint of both sides plate washer; Soft iron is in transmission connection by transmission steel wire and middle; Middle with wedge shape heat transfer interface; The other end of middle is connected with spring fastenings by spring.
5., according to embedded middle vacuum thermal pipe heat collection element pressure reduction stagnation protector according to claim 1, it is characterized in that described thermodynamic-driven device is a bimetal leaf thermodynamic-driven device or memory alloy actuator part or bellows driving element be connected with inner glass tube or heat pipe hot junction low thermal resistance.
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| 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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| 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 | Priority date | Publication date | Assignee | Title |
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| JPS5911827B2 (en) * | 1979-12-27 | 1984-03-17 | シャープ株式会社 | Selective absorption surface of heat collection part |
| 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 |
| CN102003805B (en) * | 2009-09-03 | 2014-01-15 | 陈旭 | Heat accumulation type temperature control vacuum heat collection element without thermal short circuit |
| CN102003816B (en) * | 2009-09-03 | 2012-09-26 | 陈霞 | Empty sunning resistant heat collecting element of all-glass vacuum heat pipe |
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