CN103225916B - A working medium high position gathers decompression empty sun protection metal heat pipe vacuum heat collecting device - Google Patents
A working medium high position gathers decompression empty sun protection metal heat pipe vacuum heat collecting device Download PDFInfo
- Publication number
- CN103225916B CN103225916B CN201310139572.3A CN201310139572A CN103225916B CN 103225916 B CN103225916 B CN 103225916B CN 201310139572 A CN201310139572 A CN 201310139572A CN 103225916 B CN103225916 B CN 103225916B
- Authority
- CN
- China
- Prior art keywords
- heat
- heat pipe
- working medium
- tube
- sun protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000037072 sun protection Effects 0.000 title claims abstract description 47
- 230000006837 decompression Effects 0.000 title claims abstract description 19
- 239000002184 metal Substances 0.000 title claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 81
- 239000006059 cover glass Substances 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000006855 networking Effects 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 27
- 239000010959 steel Substances 0.000 claims description 27
- 239000011521 glass Substances 0.000 claims description 25
- 238000012546 transfer Methods 0.000 claims description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 22
- 230000005855 radiation Effects 0.000 claims description 18
- 239000003507 refrigerant Substances 0.000 claims description 15
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000007605 air drying Methods 0.000 description 16
- 238000010438 heat treatment Methods 0.000 description 6
- 230000000875 corresponding effect Effects 0.000 description 5
- 230000005514 two-phase flow Effects 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000002463 transducing effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002384 drinking water standard Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- 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
- Y02E10/44—Heat exchange systems
Landscapes
- Thermal Insulation (AREA)
Abstract
A working medium high position gathers decompression empty sun protection metal heat pipe vacuum heat collecting device, gathers decompression empty sun protection wing plate heat pipe vacuum heat collection element and adiabatic water tank forms by a working medium high position; Described vacuum heat collection element is made up of wing plate heat pipe vacuum heat collection element and empty sun protection device, and empty sun protection device is made up of thermodynamic-driven device and heat straight-tube, it is characterized in that heat straight-tube and heat pipe hot junction bottom end adopt one-dimensional movement auxiliary structure low thermal resistance to be connected; Heat straight-tube can be stretched out to retract along heat collecting element direction of axis line and be moved forward and backward; Outer end shape and the cover glass tube tail end inner surface of heat straight-tube match; In inside, heat pipe hot junction containing annular liquid storage tank, short cylinder liquid-sucking core, thin capillary liquid suction core, slim capillary liquid suction core net working medium sticking interception device.The present invention adopts a small-power empty sun protection device just can ensure, and inside heat pipe water vapor pressure is no more than 2 atmospheric pressure all the time.Working medium interception device is adopted to make heat pipe foreshorten to 20 minutes from 140 minutes start-up time.
Description
Technical field
The present invention relates to a working medium high position and gather decompression empty sun protection metal heat pipe vacuum heat collecting device.
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. 2 provides the light-pipe structure gravity assisted heat pipe structural representation of a tiltably-mounted.
In Fig. 2, 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. 2, 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. 2 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.
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 a working medium high position to gather decompression empty sun protection metal heat pipe vacuum heat collecting device.
The present invention solves the technical scheme that its technical problem is taked: gather decompression empty sun protection wing plate heat pipe vacuum heat collection element, adiabatic water tank or connection collection box, tail box, support and auxiliary by a working medium high position, forms a working medium high position and gathers decompression empty sun protection metal heat pipe vacuum heat collecting device.The empty sun protection device composition that a working medium high position is gathered decompression empty sun protection metal heat pipe vacuum heat collection element wing plate heat pipe vacuum heat collection element and is placed in described heat collecting element tail end vacuum heat-insulating layer.By cover glass tube and the inner glass tube nested, concentric being set with wing plate, wing plate heat pipe vacuum heat collection element arranges that sealing-in is made.Inner glass tube to stretch out forward and after inner vacuum pumping loading working medium, a heat pipe is made in sealed-off from sealing-in place; Wing plate surface is manufactured with absorbing film.Described heat collecting element is vertical or tilt to install, and described heat pipe relies on gravity work.Described empty sun protection device is passed hot linked thermodynamic-driven device by one and described heat pipe hot junction, to be in transmission connection or the heat straight-tube integrally manufactured with thermodynamic-driven device forms with thermodynamic-driven device.Described empty sun protection device has two kinds of stable states: heat straight-tube stretches out unlatching heat conduction state during heat transfer connection cover glass tube tail end; The closedown adiabatci condition that heat straight-tube retraction is not conducted heat when connecting cover glass tube tail end.Described thermodynamic-driven device comprises one of thermal sensitive permanent magnetic steel driving element, bimetallic strip driver part, memory alloy actuator part, bellows driving element.Heat straight-tube and heat pipe hot junction bottom end adopt one-dimensional movement auxiliary structure low thermal resistance to be connected; Or heat straight-tube and a heat sink adopt one-dimensional movement auxiliary structure low thermal resistance to be connected, and described heat sink is connected with heat pipe hot junction bottom end low thermal resistance; Heat straight-tube can move forward and backward along heat collecting element direction of axis line; Outer end shape and the cover glass tube tail end inner surface of heat straight-tube match; Tail box hides described heat collecting element afterbody.
Arrange annular liquid storage tank working medium sticking interception device in inside, described heat pipe hot junction, annular liquid storage tank contains storage liquid space or annular liquid storage tank forms storage liquid space because of the change of heat pipe spatiality; Annular liquid storage tank be greater than that 40 millimeters are less than heat pipe hot junction total length from the spacing distance of heat pipe bottom 20%; And annular liquid storage tank is greater than 20 millimeters from the average vertical spacing distance of solar collection element tail end getter minute surface upper edge hole;
Or arrange short cylinder liquid-sucking core working medium sticking interception device in described heat pipe hot junction inner bottom, short cylinder liquid-sucking core is along the circumferential layout of heat pipe inner wall; Short cylinder liquid-sucking core is less than 20% of heat pipe hot junction total length from the spacing distance of heat pipe bottom; The length of described short cylinder liquid-sucking core is no more than 90 millimeters;
Or arrange the thin capillary liquid suction core working medium sticking interception device of a width 2 to 30 millimeters in inside, described heat pipe hot junction, the length of described thin capillary liquid suction core is 10 to 50% of heat pipe hot end length; The lower end of thin capillary liquid suction core is 0 to 200 millimeter from the distance of heat pipe bottom; The area of thin capillary liquid suction core is less than 5% of described heat pipe hot junction inner wall area; Containing peephole or mark on heat collecting element;
Or arrange a slim capillary liquid suction core net working medium sticking interception device be made up of the thin capillary liquid suction core of some width 2 to 10 millimeters in inside, described heat pipe hot junction, the area of slim capillary liquid suction core net is less than 5% of described heat pipe hot junction inner wall area.
Described cover glass tube tail end inner surface low thermal resistance can also be made to connect a heat radiation paster; The heat transfer conditions of heat radiation paster and heat straight-tube changes according to the state of thermodynamic-driven device and changes.
Heat straight-tube can also be made to contain one section of extension diameter section, the shape of the outer end of extension diameter section and matching of cover glass tube tail end inner surface.
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 heat pipe hot junction low thermal resistance by one piece of thermal conductance; Soft iron is tied and can moves forward and backward along heat collecting element direction of axis line and be in transmission connection by transmission steel wire and heat straight-tube.
The thin capillary liquid suction core ring that described slim capillary liquid suction core net can also be made to be connected with heat pipe inner wall concentric fit by several is formed.
Can also make: outside sunshine exposure 700 ± 50 watts/square metre, described heat pipe cold junction water temperature 40 ± 5 DEG C, heat collecting element axial line be north-south be in tilted layout and the angle of its axial line and incident sunlight within the scope of 90 ± 20 ° under condition: described annular liquid storage tank or described short cylinder liquid-sucking core or described thin capillary liquid suction core or described slim capillary liquid suction core net hold 25% of quality≤its maximum liquid refrigerant volume of holding of liquid refrigerant;
Or, described annular liquid storage tank or described short cylinder liquid-sucking core or described thin capillary liquid suction core or the maximum liquid refrigerant volume of holding >=4 milliliter of described slim capillary liquid suction core net; Outside sunshine exposure 700 ± 50 watts/square metre, described heat pipe cold junction water temperature 40 ± 5 DEG C, heat collecting element axial line be north-south be in tilted layout and the angle of its axial line and incident sunlight within the scope of 90 ± 20 ° under condition, described annular liquid storage tank or described short cylinder liquid-sucking core or described thin capillary liquid suction core or described slim capillary liquid suction core net hold quality≤0.9 milliliter of liquid refrigerant.
Described heat collecting element tail end can also be made to be the part being no more than heat collecting element total length 6% from heat collecting element tail end bottom outer surface forward.
Beneficial effect of the present invention: the present invention's empty sun protection wing plate heat pipe vacuum heat collecting device that reduces pressure adopts and 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 air drying creep failure 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 also has more than 150 DEG C, corresponding water vapor pressure still can reach 5 atmospheric pressure, exceeds the voltage endurance capability of external diameter 30 millimeters of wall thickness 1.6 millimeters of glass tubes.The present invention is for the same heat collecting element exporting 70 watts, and decompression empty sun protection heat transfer path only needs 10 watts of heat radiation powers, just can when air drying occurs with the speed of 0.25 ml/min to absorb the water of inside heat pipe.After air drying starts about 6 minutes; although 95 DEG C when the temperature of tube surface is from empty sun protection are at that time increased to about 115 DEG C; but inside, heat pipe hot junction except bottom end all dry, vapour pressure be less than 1.5 atmospheric pressure, namely to be subject to protection in a safe condition for heat pipe.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 empty sun protection problem that effectively can solve glass heat pipe.The present invention adopt a small-power empty sun protection device 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 straight-tube heat transfer area is large, rigidity strong, it is few to utilize heat collecting element bottom to build the absorption resource occupation of heat transfer path to heat collecting element.Adopt with the heat straight-tube of extension diameter section, the abundant heat transfer between the copper heat pipe thinner for diameter and the thicker cover glass tube of diameter provides a suitable solution.
Thermal sensitive permanent magnetic steel driving element uniformity is good, reproducible, control accuracy is high, long service life, performance are satisfactory.
Slim capillary liquid suction core net is set in described glass heat pipe inside or annular liquid storage tank or short cylinder liquid-sucking core or thin capillary liquid suction core are set at inner bottom place, described glass heat pipe hot junction, when the sun sets, the reverse work of described glass heat pipe: the liquid refrigerant of the former heat pipe cold junction inner surface be connected with heating load low thermal resistance evaporates and condenses at former heat pipe hot junction inner surface, when former heat pipe hot junction inner surface liquid refrigerant gather more and trickle downwards and arrive slim capillary liquid suction core net or annular liquid storage tank or thin capillary liquid suction core or short cylinder liquid-sucking core time to be retained by sticking thus to have raised the position of working medium.Second day sun out time, heat pipe hot junction is once be heated, and the liquid refrigerant being cut liquid by sticking evaporates rapidly and participates in two phase flow heat transfer.Further analysis is known: owing to have employed slim capillary liquid suction core net, annular liquid storage tank, short cylinder liquid-sucking core and thin capillary liquid suction core, tenfold adds endotherm area, draw compared with the light pipe glass heat pipe of heat energy above the glass tube surrounded by getter minute surface with only relying on glass tube walls, the heating power of working medium startup stage of having increased considerably.In winter, heat pipe start-up course foreshortens to 10 to 30 minutes in more than 140 minute from original light pipe, is equivalent to heat collector many thermal-arrests every day in winter more than one hour.When daytime, heat collecting element normally worked, because annular liquid storage tank only has 45 millimeters from bottom, heat pipe hot junction, even if the solar thermal energy that absorbs of the dry relevant absorbing film of these 45 millimeters of sections also effectively can participate in heat exchange by glass tube to the heat transfer of annular liquid storage tank.Other working medium sticking interception device also can not be held when heat pipe normally works or seldom hold liquid refrigerant.So just there is not the problem increasing or more increase working medium filling weight because using working medium sticking interception device, thus both accelerated heat pipe startup to greatest extent; The pressure of glass heat pipe inside during air drying is made again to keep low level.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is a decompression empty sun protection wing plate heat pipe vacuum heat collecting device composite construction schematic diagram.
Fig. 2 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. wing plate; 4. inner glass tube; 5. heat straight-tube; 6. thermal sensitive permanent magnetic steel; 7. soft iron; 8. thermal conductance; 9. transmission steel wire; 10. spring; 11. extension diameter sections; 12. outer ends; 13. short liquid-sucking cores; 14. adiabatic water tanks; 15. tail boxes.
Detailed description of the invention
Fig. 1 provides one embodiment of the invention.
In Fig. 1, gather decompression empty sun protection wing plate heat pipe vacuum heat collection element, adiabatic water tank 14 and tail box 15 by a working medium high position and form a working medium high position and gather decompression empty sun protection metal heat pipe vacuum heat collecting device.A working medium high position gathers decompression empty sun protection metal heat pipe vacuum heat collection element by the vacuum heat-insulating layer between wing plate heat pipe vacuum heat collection element cover glass tube 2 tail end and heat pipe 1 tail end, arranges an embedded straight tube heat-tube vacuum heat collecting element decompression empty sun protection device composition.By cover glass tube 2 and inner glass tube 4 nested, concentric being set with wing plate 3, wing plate heat pipe vacuum heat collection element arranges that sealing-in is made; Inner glass tube 4 to stretch out forward and after inner vacuum pumping loading working medium, a heat pipe is made in sealed-off from sealing-in place; Wing plate 3 surface is manufactured with absorbing film.Described empty sun protection device is made up of thermal sensitive permanent magnetic steel driving element and heat straight-tube 5.Thermal sensitive permanent magnetic steel driving element comprises one piece of thermal sensitive permanent magnetic steel 6 and one block of soft iron 7; Thermal sensitive permanent magnetic steel 6 is connected with heat pipe 1 hot junction low thermal resistance by thermal conductance 8.When needing, shadow shield is set on thermal sensitive permanent magnetic steel 6 and prevents the thermal sensitive permanent magnetic steel 6 that sunshine direct projection is being in vacuum heat-insulating layer from making its misoperation.Thermal conductance solves the problem that between thermal sensitive permanent magnetic steel 6 and heat pipe 1, transmission of heat by contact thermal resistance is large.Soft iron 7 is tied and can moves forward and backward along heat collecting element direction of axis line and be in transmission connection by transmission steel wire 9 and heat straight-tube 5, and soft iron 7 pushed away from permanent-magnet steel 6 by spring 10 thrust or has the trend pusheding away from permanent-magnet steel 6.The board making of heat straight-tube 5 available thickness 0.22 millimeter, heat straight-tube 5 with one section of extension diameter section 11, the shape of outer end 12 of extension diameter section 11 and matching of cover glass tube 2 tail end inner surface.Heat straight-tube 5 adopts one-dimensional movement auxiliary structure low thermal resistance to be connected with heat pipe 1 hot junction bottom end, and heat straight-tube 5 can be stretched out to retract along heat pipe 1 direction of axis line and be moved forward and backward.Tail box 15 hides described heat collecting element afterbody.
In heat pipe 1 hot junction, inner bottom arranges short cylinder liquid-sucking core 13, and short cylinder liquid-sucking core 13 is along the circumferential layout of heat pipe 1 inwall; Short cylinder liquid-sucking core 13 is from the spacing distance 45 millimeters of heat pipe bottom; Short cylinder liquid-sucking core 13 adopts glass fibre to make, length 50 millimeters, overlays in heat pipe 1 inwall with jump ring.
The operation principle of Fig. 1 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; thermal sensitive permanent magnetic steel 6 temperature be connected with heat pipe 1 low thermal resistance does not reach loss of excitation temperature; thermal sensitive permanent magnetic steel 6 holds soft iron 7 by heat straight-tube 5 toward Zola; make heat straight-tube 5 not contact cover glass tube 2 tail end, empty sun protection device is in closedown adiabatci condition.Heat collecting element can normal thermal-arrest.
When heat collecting element is in air drying state, thermal sensitive permanent magnetic steel 6 temperature raises magnetic force and disappears, and spring 10 pushes soft iron 7 and heat straight-tube 5 to the right side, makes heat straight-tube 5 stretch out heat transfer and connects cover glass tube 2 tail end, and empty sun protection device is in opens heat conduction state.The heat energy in heat pipe 1 hot junction is lost to environment continually by empty sun protection device.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 inside heat pipe pressure low level realizes the empty sun protection of heat collecting element.
Later heat collecting element departs from air drying state, and thermal sensitive permanent magnetic steel 6 temperature reduces magnetic force and recovers and attract soft iron 7 that heat straight-tube 5 is retracted not conduct heat connection cover glass tube 2 tail end, and empty sun protection device is in closedown adiabatci condition, and heat collecting element can normally work again.
When the heat collecting element of Fig. 1 embodiment turn clockwise about 45 degree tilt to install time, heat pipe 1 can rely on gravity to realize two phase flow cycle heat exchange, and solar thermal energy is passed to heating load by cold junction continuously.When heat pipe 1 works, because short cylinder liquid-sucking core 13 can not hold working medium, so working medium filling weight does not increase, when being conducive to limiting air drying, the inner saturated vapor pressure of heat pipe 3 is in low-level.
When Fig. 1 embodiment short cylinder liquid-sucking core 13 can when heat pipe 1 does not work a large amount of sticking liquid refrigerant, improve the position that former light pipe heat pipe is collected in the working medium bottom heat pipe 1.When short cylinder liquid-sucking core 13 can make heat pipe 1 start from heat pipe 1 bottom spacing distance 45 millimeters from above and below simultaneously stability solar thermal energy accelerate start.
In Fig. 1 embodiment, when heat pipe 1 normally works, allow tens of milliseconds section below it dry or partly dry so short cylinder liquid-sucking core 13 does not usually hold working medium when heat pipe 1 works.When the sun sets, the condensate water evaporation of heat pipe 1 cold junction inner surface, comprises the whole or most working medium of all working medium of this part working medium by short cylinder liquid-sucking core 13 sticking.
Fig. 1 embodiment is for the wing plate heat pipe vacuum heat collection element of cover glass tube 2 diameter 70; do not adopt and arrange heat radiation paster and do not arrange heat sink between heat pipe 1 hot junction and heat straight-tube 5 at cover glass tube tail end inwall, the heat radiation power of described empty sun protection device also can reach more than 10 watts.
Changing the thermal sensitive permanent magnetic steel driving element of Fig. 1 into bimetal leaf thermodynamic-driven device or changing memory alloy actuator part into or change into when bellows driving element also can realize air drying makes heat straight-tube 5 stretch out heat transfer connection, 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 (6)
1. a working medium high position gathers decompression empty sun protection metal heat pipe vacuum heat collecting device, gathers decompression empty sun protection wing plate heat pipe vacuum heat collection element, adiabatic water tank or connection collection box, tail box, support and auxiliary form by a working medium high position; The empty sun protection device composition that a working medium high position is gathered decompression empty sun protection wing plate heat pipe vacuum heat collection element wing plate heat pipe vacuum heat collection element and is placed in described heat collecting element tail end vacuum heat-insulating layer, by cover glass tube and the inner glass tube nested, concentric being set with wing plate, wing plate heat pipe vacuum heat collection element arranges that sealing-in is made; Inner glass tube to stretch out forward and after inner vacuum pumping loading working medium, a heat pipe is made in sealed-off from sealing-in place; Wing plate surface is manufactured with absorbing film; Described heat collecting element is vertical or tilt to install, described heat pipe relies on gravity work, described empty sun protection device is passed hot linked thermodynamic-driven device by one and described heat pipe hot junction, to be in transmission connection or the heat straight-tube integrally manufactured with thermodynamic-driven device forms with thermodynamic-driven device, and described empty sun protection device has two kinds of stable states: heat straight-tube stretches out unlatching heat conduction state when heat transfer connects cover glass tube tail end; The closedown adiabatci condition that heat straight-tube retraction is not conducted heat when connecting cover glass tube tail end, is characterized in that heat straight-tube and heat pipe hot junction bottom end adopt one-dimensional movement auxiliary structure low thermal resistance to be connected; Heat straight-tube can move forward and backward along heat collecting element direction of axis line; Outer end shape and the cover glass tube tail end inner surface of heat straight-tube match; Tail box hides described heat collecting element afterbody;
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 heat pipe hot junction low thermal resistance by one piece of thermal conductance; Soft iron is tied and can moves forward and backward along heat collecting element direction of axis line and be in transmission connection by transmission steel wire and heat straight-tube;
In inside, described heat pipe hot junction containing annular liquid storage tank working medium sticking interception device, annular liquid storage tank contains storage liquid space or annular liquid storage tank forms storage liquid space because of the change of heat pipe spatiality; Annular liquid storage tank be greater than that 40 millimeters are less than heat pipe hot junction total length from the spacing distance of heat pipe bottom 20%; And annular liquid storage tank is greater than 20 millimeters from the average vertical spacing distance of solar collection element tail end getter minute surface upper edge hole;
Or contain short cylinder liquid-sucking core working medium sticking interception device in described heat pipe hot junction inner bottom, short cylinder liquid-sucking core is along the circumferential layout of heat pipe inner wall; Short cylinder liquid-sucking core is less than 20% of heat pipe hot junction total length from the spacing distance of heat pipe bottom; The length of described short cylinder liquid-sucking core is no more than 90 millimeters;
Or, the thin capillary liquid suction core working medium sticking interception device in inside, described heat pipe hot junction containing a width 2 to 30 millimeters, the length of described thin capillary liquid suction core is 10 to 50% of heat pipe hot end length; The lower end of thin capillary liquid suction core is 0 to 200 millimeter from the distance of heat pipe bottom; The area of thin capillary liquid suction core is less than 5% of described heat pipe hot junction inner wall area; Containing peephole or mark on heat collecting element;
Or the slim capillary liquid suction core net working medium sticking interception device be made up of the thin capillary liquid suction core of some width 2 to 10 millimeters containing in inside, described heat pipe hot junction, the area of slim capillary liquid suction core net is less than 5% of described heat pipe hot junction inner wall area.
2., according to heat collector according to claim 1, it is characterized in that described cover glass tube tail end inner surface low thermal resistance connects a heat radiation paster; The heat transfer conditions of heat radiation paster and heat straight-tube changes according to the state of thermodynamic-driven device and changes.
3., according to heat collector according to claim 1, it is characterized in that heat straight-tube contains one section of extension diameter section, the shape of the outer end of extension diameter section and matching of cover glass tube tail end inner surface.
4., according to heat collector according to claim 1, it is characterized in that the thin capillary liquid suction core ring that described slim capillary liquid suction core net is connected with heat pipe inner wall concentric fit by several is formed.
5., according to heat collector according to claim 1, it is characterized in that: outside sunshine exposure 700 ± 50 watts/square metre, described heat pipe cold junction water temperature 40 ± 5 DEG C, heat collecting element axial line be north-south be in tilted layout and the angle of its axial line and incident sunlight within the scope of 90 ± 20 ° under condition: described annular liquid storage tank or described short cylinder liquid-sucking core or described thin capillary liquid suction core or described slim capillary liquid suction core net hold 25% of quality≤its maximum liquid refrigerant volume of holding of liquid refrigerant;
Or, described annular liquid storage tank or described short cylinder liquid-sucking core or described thin capillary liquid suction core or the maximum liquid refrigerant volume of holding >=4 milliliter of described slim capillary liquid suction core net; Outside sunshine exposure 700 ± 50 watts/square metre, described heat pipe cold junction water temperature 40 ± 5 DEG C, heat collecting element axial line be north-south be in tilted layout and the angle of its axial line and incident sunlight within the scope of 90 ± 20 ° under condition, described annular liquid storage tank or described short cylinder liquid-sucking core or described thin capillary liquid suction core or described slim capillary liquid suction core net hold quality≤0.9 milliliter of liquid refrigerant.
6., according to heat collector according to claim 1, it is characterized in that described heat collecting element tail end is the part being no more than heat collecting element total length 6% from heat collecting element tail end bottom outer surface forward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310139572.3A CN103225916B (en) | 2013-04-22 | 2013-04-22 | A working medium high position gathers decompression empty sun protection metal heat pipe vacuum heat collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310139572.3A CN103225916B (en) | 2013-04-22 | 2013-04-22 | A working medium high position gathers decompression empty sun protection metal heat pipe vacuum heat collecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103225916A CN103225916A (en) | 2013-07-31 |
| CN103225916B true CN103225916B (en) | 2016-03-09 |
Family
ID=48836457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310139572.3A Expired - Fee Related CN103225916B (en) | 2013-04-22 | 2013-04-22 | A working medium high position gathers decompression empty sun protection metal heat pipe vacuum heat collecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103225916B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357835B (en) * | 2021-08-12 | 2021-10-08 | 南通华昱照明电器有限公司 | Solar heat collector with high light collection and heat conduction |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4440151A (en) * | 1980-12-29 | 1984-04-03 | Hitachi, Ltd. | Solar heat collector |
| CN2757039Y (en) * | 2004-07-29 | 2006-02-08 | 徐宝安 | Pressure bearing mounting heat collecting and water storage device for solar glass hot tube vacuum heat collecting tube |
| CN2861878Y (en) * | 2005-07-04 | 2007-01-24 | 朴来玟 | Vacuum tube type solar heat collector |
| CN201116791Y (en) * | 2007-10-13 | 2008-09-17 | 徐珠锋 | Heat pump heat pipe heat collection device |
| CN201203284Y (en) * | 2008-03-28 | 2009-03-04 | 湖北华扬太阳能有限公司 | Hot pipe type solar full glass vacuum thermal-collecting tube built-in with wire net structure |
| CN102003808A (en) * | 2009-09-03 | 2011-04-06 | 施国庆 | Method and device for controlling pressures of multi-boiling point working mediums of full-glass heat pipe vacuum heat collection element |
| CN102042704A (en) * | 2010-11-25 | 2011-05-04 | 大连熵立得传热技术有限公司 | Heat transfer device of heat-pipe solar heat collector |
-
2013
- 2013-04-22 CN CN201310139572.3A patent/CN103225916B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4440151A (en) * | 1980-12-29 | 1984-04-03 | Hitachi, Ltd. | Solar heat collector |
| CN2757039Y (en) * | 2004-07-29 | 2006-02-08 | 徐宝安 | Pressure bearing mounting heat collecting and water storage device for solar glass hot tube vacuum heat collecting tube |
| CN2861878Y (en) * | 2005-07-04 | 2007-01-24 | 朴来玟 | Vacuum tube type solar heat collector |
| CN201116791Y (en) * | 2007-10-13 | 2008-09-17 | 徐珠锋 | Heat pump heat pipe heat collection device |
| CN201203284Y (en) * | 2008-03-28 | 2009-03-04 | 湖北华扬太阳能有限公司 | Hot pipe type solar full glass vacuum thermal-collecting tube built-in with wire net structure |
| CN102003808A (en) * | 2009-09-03 | 2011-04-06 | 施国庆 | Method and device for controlling pressures of multi-boiling point working mediums of full-glass heat pipe vacuum heat collection element |
| CN102042704A (en) * | 2010-11-25 | 2011-05-04 | 大连熵立得传热技术有限公司 | Heat transfer device of heat-pipe solar heat collector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103225916A (en) | 2013-07-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103225916B (en) | A working medium high position gathers decompression empty sun protection metal heat pipe vacuum heat collecting device | |
| CN203240773U (en) | Working medium high-position gathering pressure-reduction idle-sunning protection vacuum heat tube heat collection device | |
| CN203274285U (en) | Vacuum solar energy heat collecting device of boosting decompression stagnation protective eccentric heat pipe | |
| CN203240810U (en) | Working medium high-position gathering pressure-reduction idle-sunning protection eccentric heat tube vacuum heat collection element | |
| CN103225885B (en) | Decompression empty sun protection wing plate heat pipe vacuous solar energy heat collector | |
| CN103225891B (en) | Boosting decompression empty sun protection wing plate heat pipe vacuous solar energy heat collector | |
| CN203240808U (en) | Working medium high-position gathering pressure-reduction idle-sunning protection vacuum heat tube heat collection element | |
| CN203190683U (en) | Boosting pressure-relieving idle-sunning-protection eccentric heat tube vacuum heat-collecting element | |
| CN203190665U (en) | Boosting pressure-relieving idle-sunning-protection vacuum heat tube heat-collecting element | |
| CN103307769B (en) | A working medium high position gathers the eccentric heat-tube vacuum heat collector of decompression empty sun protection | |
| CN203240771U (en) | Working medium high-position gathering pressure-reduction idle-sunning protection full-glass vacuum heat tube heat collection element | |
| CN103307787B (en) | The eccentric heat-tube vacuum solar energy heat collector of boosting decompression empty sun protection | |
| CN203240807U (en) | Boosting pressure reduction empty sunning protection metal heat pipe vacuum heat collection element | |
| CN103245112B (en) | The eccentric heat-tube vacuum heat collecting element of boosting decompression empty sun protection | |
| CN203190650U (en) | Pressure-reducing idle sunning protection eccentric heat pipe vacuum solar energy heat-collecting device | |
| CN103225890B (en) | Boosting decompression empty sun protection all-glass vacuum hot pipe solar heat collector | |
| CN103245110B (en) | Boosting decompression empty sun protection vacuum heat-pipe heat collecting element | |
| CN203274319U (en) | Working-medium high-position accumulation decompression air-drying protection eccentric-heat-pipe vacuum heat collection device | |
| CN103225919B (en) | Working medium high-position gathering pressure-reduction heat collection component for protecting vacuum heat pipe from stagnation | |
| CN103225886B (en) | Decompression empty sun protection metal heat pipe vacuous solar energy heat collector | |
| CN103234288B (en) | High-position working medium concentration pressure reduction idle sunning protection eccentric heat tube vacuum heat collection element | |
| CN103225915B (en) | A working medium high position gathers decompression empty sun protection all-glass vacuum heat pipe heat collecting device | |
| CN103335424B (en) | The eccentric heat-tube vacuum solar energy heat collector of decompression empty sun protection | |
| CN103225892B (en) | Decompression empty sun protection all-glass vacuum hot pipe solar heat collector | |
| CN103225903B (en) | Pressure reducing air sunning protecting insertion type heat pipe vacuum heat collection component |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: Wenqiao town Wenling city Taizhou City, Zhejiang province 317527 Xing Chang Road 25 Building No. 5 Applicant after: Xu Xiuping Address before: 200336, room 29, No. 600, Lane 302, Moutai Road, Shanghai, Changning District Applicant before: Xu Xiuping |
|
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Rui Inventor before: Shi Guoliang |
|
| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170612 Address after: 236325, No. 41 Li Wan Village, Tian Zhen Village, Tian Zhen, Funan, Fuyang, Anhui Patentee after: Li Rui Address before: Wenqiao town Wenling city Taizhou City, Zhejiang province 317527 Xing Chang Road 25 Building No. 5 Patentee before: Xu Xiuping |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160309 Termination date: 20180422 |