CN103245110B - Boosting decompression empty sun protection vacuum heat-pipe heat collecting element - Google Patents
Boosting decompression empty sun protection vacuum heat-pipe heat collecting element Download PDFInfo
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Abstract
Boosting decompression empty sun protection vacuum heat-pipe heat collecting element, is characterized in that the vacuum heat-insulating layer of heat collecting element tail end contains a controlled heat transfer path.A working medium high position gathers boosting decompression empty sun protection vacuum heat-pipe heat collecting element, it is characterized in that the vacuum heat-insulating layer of heat collecting element tail end contains a controlled heat transfer path; Heat pipe contain working medium sticking interception device comprise annular liquid storage tank, short cylinder liquid-sucking core, thin capillary liquid suction core and slim capillary liquid suction core net working medium sticking interception device for sticking interception from the liquid refrigerant of top to raise heat pipe end-of-job time bottom gather working medium position and start to add quick heating pipe.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; And in the winter time heat pipe can be foreshortened to 20 minutes from 140 minutes start-up time, every day many thermal-arrests 1 hour.
Description
Technical field
The present invention relates to boosting decompression empty sun protection vacuum heat-pipe heat collecting element.
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. 4 provides the light-pipe structure gravity assisted heat pipe structural representation of a tiltably-mounted.
In Fig. 4, 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. 4, 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. 4 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 boosting decompression empty sun protection vacuum heat-pipe heat collecting element.
One of the present invention's technical scheme solving its technical problem: manufacture boosting decompression empty sun protection gravity assisted heat pipe vacuum heat collection element, comprise the metal heat pipe heat collecting element that can cut down sealing-in cover glass tube and metal fin heat pipe, glass wing plate heat pipe vacuum heat collection element in being made up of cover glass tube and the sealing-in of band wing plate inner glass tube nested, concentric layout, the all-glass vacuum heat collector tube element that sealing-in is made is arranged by cover glass tube and inner glass tube nested, concentric, the eccentric heat collector tube element be made up of bending inner glass tube and the sealing-in of cover glass tube nested arrangement with the outer straight section of eccentric straight section and the positive heart with one and be connected with insertion glass heat pipe low thermal resistance wherein the plug-in type heat collector tube element made by all-glass vacuum thermal-collecting tube.Described heat collecting element is vertical or tilt to install, and described heat pipe relies on gravity work.The vacuum heat-insulating layer of heat collecting element tail end arranges a controlled heat transfer path.
Described controlled heat transfer path comprise heat radiation paster, heat sink, with heat collecting element heat pipe hot junction or inner glass tube conduct heat linkage interface boosting thermodynamic-driven device and be in transmission connection with boosting thermodynamic-driven device or integrally manufactured with boosting thermodynamic-driven device in sheet.Described 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.Boosting thermodynamic-driven device comprise thermal sensitive permanent magnetic steel soft iron drive to bimetal leaf boosting parts.Thermal sensitive permanent magnetic steel soft iron drives comprising 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 middle.Described thermal sensitive permanent magnetic steel soft iron drive to containing and the linkage interface of bimetal leaf boosting parts.Described bimetal leaf boosting parts from loss of excitation state to the temperature-fall period having magnetic state to change in thermal sensitive permanent magnetic steel, produce deformation and help to promote the driving of thermal sensitive permanent magnetic steel soft iron to adhesive;
Or, described controlled heat transfer path comprise with heat collecting element heat pipe hot junction or inner glass tube conduct heat linkage interface boosting thermodynamic-driven device and be in transmission connection with boosting thermodynamic-driven device or the heat straight-tube integrally manufactured with boosting 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.Heat straight-tube directly or by a heat sink adopts the secondary low thermal resistance of one-dimensional movement to be connected with inner glass tube tail end or heat pipe hot junction bottom end, and described heat sink is connected with inner glass tube tail end or heat pipe hot junction bottom end low thermal resistance.Described heat straight-tube can move forward and backward along heat collecting element direction of axis line, the outer end shape of heat straight-tube and matching of cover glass tube tail end inner surface.Boosting thermodynamic-driven device comprise thermal sensitive permanent magnetic steel soft iron drive to bimetal leaf boosting parts.Thermal sensitive permanent magnetic steel soft iron drives comprising 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.Described thermal sensitive permanent magnetic steel soft iron drive to containing and the linkage interface of bimetal leaf boosting parts.Described bimetal leaf boosting parts from loss of excitation state to the temperature-fall period having magnetic state to change in thermal sensitive permanent magnetic steel, produce deformation and help to promote the driving of thermal sensitive permanent magnetic steel soft iron to adhesive.
The present invention solves the technical scheme two of its technical problem: manufacture the decompression empty sun protection gravity assisted heat pipe vacuum heat collection element that a working medium high position is gathered, comprise the metal heat pipe heat collecting element that can cut down sealing-in cover glass tube and metal fin heat pipe, glass wing plate heat pipe vacuum heat collection element in being made up of cover glass tube and the sealing-in of band wing plate inner glass tube nested, concentric layout, the all-glass vacuum heat collector tube element that sealing-in is made is arranged by cover glass tube and inner glass tube nested, concentric, the eccentric heat collector tube element be made up of bending inner glass tube and the sealing-in of cover glass tube nested arrangement with the outer straight section of eccentric straight section and the positive heart with one and be connected with insertion glass heat pipe low thermal resistance wherein the plug-in type heat collector tube element made by all-glass vacuum thermal-collecting tube.Described heat collecting element is vertical or tilt to install, and described heat pipe relies on gravity work.The vacuum heat-insulating layer of heat collecting element tail end arranges a controlled heat transfer path.
Described controlled heat transfer path comprise heat radiation paster, heat sink, with heat collecting element heat pipe hot junction or inner glass tube conduct heat linkage interface boosting thermodynamic-driven device and be in transmission connection with boosting thermodynamic-driven device or integrally manufactured with boosting thermodynamic-driven device in sheet.Described 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.Boosting thermodynamic-driven device comprise thermal sensitive permanent magnetic steel soft iron drive to bimetal leaf boosting parts.Thermal sensitive permanent magnetic steel soft iron drives comprising 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 middle.Described thermal sensitive permanent magnetic steel soft iron drive to containing and the linkage interface of bimetal leaf boosting parts.Described bimetal leaf boosting parts from loss of excitation state to the temperature-fall period having magnetic state to change in thermal sensitive permanent magnetic steel, produce deformation and help to promote the driving of thermal sensitive permanent magnetic steel soft iron to adhesive;
Or, described controlled heat transfer path comprise with heat collecting element heat pipe hot junction or inner glass tube conduct heat linkage interface boosting thermodynamic-driven device and be in transmission connection with boosting thermodynamic-driven device or the heat straight-tube integrally manufactured with boosting 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.Heat straight-tube directly or by a heat sink adopts the secondary low thermal resistance of one-dimensional movement to be connected with inner glass tube tail end or heat pipe hot junction bottom end, and described heat sink is connected with inner glass tube tail end or heat pipe hot junction bottom end low thermal resistance.Described heat straight-tube can move forward and backward along heat collecting element direction of axis line; The outer end shape of heat straight-tube and matching of cover glass tube tail end inner surface.Boosting thermodynamic-driven device comprise thermal sensitive permanent magnetic steel soft iron drive to bimetal leaf boosting parts.Thermal sensitive permanent magnetic steel soft iron drives comprising 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 does along the movable of heat collecting element direction of axis line and be in transmission connection by transmission steel wire and heat straight-tube.Described thermal sensitive permanent magnetic steel soft iron drive to containing and the linkage interface of bimetal leaf boosting parts.Described bimetal leaf boosting parts from loss of excitation state to the temperature-fall period having magnetic state to change in thermal sensitive permanent magnetic steel, produce deformation and help to promote the driving of thermal sensitive permanent magnetic steel soft iron to adhesive.
Arrange in inside, described heat pipe hot junction working medium sticking interception device for sticking interception from the liquid refrigerant of top to raise heat pipe end-of-job time the liquid refrigerant position gathered, bottom, described working medium sticking interception device jump ring overlays and relies on natural resiliency to overlay in heat pipe hot junction inwall in heat pipe hot junction inwall or working medium sticking interception device, specifically comprises:
1) arrange annular liquid storage tank working medium sticking interception device in inwall bottom, 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%;
Or arrange short cylinder liquid-sucking core working medium sticking interception device in glass 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;
Or arrange the thin capillary liquid suction core working medium sticking interception device of a width 2 to 30 millimeters at inner bottom place, glass heat pipe hot junction, the length of 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;
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 at inner bottom place, glass 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 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: undertaken dispel the heat prevent the technical scheme of heat pipe bombing by start described controllable heat dissipation passage when air drying with respect to controllable heat dissipation passage uniform in vacuum heat collection element vacuum heat-insulating layer; the present invention relies on the heat radiation of heat collecting element heat pipe bottom end and collects liquid refrigerant, blocks the empty sun protection method of inside heat pipe two phase flow heat transfer, and heat radiation power can reduce greatly.For example, originally one exports the heat collecting element of 70 watts, working medium filling weight 3 milliliters, adopt the scheme that controlled heat transfer path is set between heat collecting element absorber and cover glass-tube, heat radiation power 40 watts is increased during air drying, inside heat pipe temperature also has more than 150 DEG C, and corresponding water vapor pressure still can reach the voltage endurance capability that 4.8 atmospheric pressure exceed internal diameter 37 millimeters of wall thickness 1.6 millimeters of glass tubes.The present invention is for the same glass heat pipe 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 at that time heat pipe temperature may from empty sun protection time 95 DEG C be increased to about 114 to 123 DEG C; but inside, heat pipe hot junction except bottom end all dry, vapour pressure be less than 2 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 heat collector tube element.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 wing plate 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, heat pipe hot-side temperature declines, 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.For the heat collecting element adopting annular liquid storage tank, 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 boosting decompression empty sun protection metal heat pipe vacuum heat collection element composite construction schematic diagram.
Fig. 2 is a boosting decompression empty sun protection eccentric heat-tube vacuum heat collecting element structural representation.
Fig. 3 is that a working medium high position gathers decompression empty sun protection eccentric heat-tube vacuum heat collecting element structural representation.
Fig. 4 is a gravity assisted heat pipe structural representation be in tilted layout.
1. heat pipes in figure; 2. cover glass tube; 3. heat straight-tube; 4. thermal sensitive permanent magnetic steel; 5. soft iron; 6. bimetal leaf boosting parts; 7. thermal conductance; 8. transmission steel wire; 9. spring; 10. extension diameter section; 11. outer ends; 12. curved inner glass tubes; 13. outer straight sections; 14. eccentric straight sections; Straight section in 15.; 16. outer straight changeover portions; Straight changeover portion in 17.; 18. short liquid-sucking cores; 19. semicircle minute surfaces; 20. wing plates; 21. inner glass tubes.
Detailed description of the invention
Fig. 1 provides first embodiment of the invention.
In Fig. 1; in vacuum heat-insulating layer between metal heat pipe vacuum heat collection element cover glass tube 2 tail end and heat pipe 1 hot junction bottom end; an embedded straight tube heat-tube vacuum heat collecting element boosting decompression empty sun protection device is set, forms a boosting decompression empty sun protection metal heat pipe vacuum heat collection element.Metal heat pipe vacuum heat collection element is with cutting down sealing-in cover glass tube 2 and wing sheetmetal heat pipe is made.Described boosting empty sun protection device is made up of thermal sensitive permanent magnetic steel driving element and heat straight-tube 3.Thermal sensitive permanent magnetic steel driving element comprises one piece of thermal sensitive permanent magnetic steel, 4, one block of soft iron 5 and bimetal leaf boosting parts 6.Thermal sensitive permanent magnetic steel 4 is connected with heat pipe 1 hot junction low thermal resistance by thermal conductance 7.When needing, shadow shield is set on thermal sensitive permanent magnetic steel 4 and prevents the thermal sensitive permanent magnetic steel 4 that sunshine direct projection is being in vacuum heat-insulating layer from making its misoperation.Thermal conductance 7 solves the problem that between thermal sensitive permanent magnetic steel 4 and heat pipe 1, transmission of heat by contact thermal resistance is large.Soft iron 5 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 8 and heat straight-tube 3, and soft iron 5 pushed away from permanent-magnet steel 4 by spring 9 thrust or has the trend pusheding away from permanent-magnet steel 4.As the linkage interface with bimetal leaf boosting parts 6 free end in the middle of outside soft iron 5; Bimetal leaf boosting parts 6 stiff end is fixed.Heat straight-tube 3 adopts one-dimensional movement auxiliary structure low thermal resistance to be connected with heat pipe 1 hot junction bottom end, and heat straight-tube 3 can be stretched out to retract along heat pipe 1 direction of axis line and be moved forward and backward.Heat straight-tube 3 with one section of extension diameter section 10, the shape of outer end 11 of extension diameter section 10 and matching of cover glass tube 2 tail end inner surface.Heat straight-tube 3 makes of thin plate.
The operation principle of Fig. 1 embodiment: when embedding the metal heat pipe vacuum heat collection 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 wing plate heat pipe absorbing film, and heat energy passes to inside heat pipe working medium 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 4 temperature be connected with heat pipe 1 low thermal resistance by thermal conductance 7 does not reach loss of excitation temperature; thermal sensitive permanent magnetic steel 4 holds soft iron 5 by heat straight-tube 3 toward Zola, and make heat straight-tube 3 not contact cover glass tube 2 afterbody, empty sun protection device is in closedown adiabatci condition.The normal thermal-arrest of heat collecting element.
When heat collecting element is in air drying state, thermal sensitive permanent magnetic steel 4 temperature raises magnetic force and disappears, and spring 9 pushes soft iron 5 and heat straight-tube 3 to the right side, makes the outer end of heat straight-tube 3 stretch out heat transfer and connects cover glass tube 2 afterbody, 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, realize the empty sun protection of heat collecting element.
When heat collecting element is in air drying state, temperature its shape high of bimetal leaf boosting parts 6 is not curved left, ensures that soft iron 5 tension moves to right.
Later heat collecting element departs from air drying state, and thermal sensitive permanent magnetic steel 4 temperature reduces magnetic force and recovers and attract soft iron 5 that heat straight-tube 3 is retracted not conduct heat connection cover glass tube 2, and empty sun protection device is in closedown adiabatci condition, and heat collecting element can normally work again.
Bimetal leaf boosting parts 6 from loss of excitation state to the temperature-fall period having magnetic state to change in thermal sensitive permanent magnetic steel 4, produce the deformation intermediate portion soft iron 5 of projection promotion left and are moved to the left (as shown in phantom in FIG.).Due to the existence of bimetal leaf boosting parts 6; the trueness error overcoming associated components make soft iron 5 from thermal sensitive permanent magnetic steel 4 excessively away from; the problem of the inadequate empty sun protection device cisco unity malfunction of thermal sensitive permanent magnetic steel 4 suction, makes the work of thermal sensitive permanent magnetic steel driving element more rapid reliable.
Fig. 1 embodiment is for the metal 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 3 at cover glass tube 2 tail end inwall, the heat radiation power of described empty sun protection device also can reach more than 10 watts.
Fig. 2 provides second embodiment of the present invention.
In Fig. 2, an empty sun protection device is set in the vacuum heat-insulating layer between the cover glass tube 2 and curved inner glass tube 12 of the eccentric heat-tube vacuum heat collecting element of a bending, forms an eccentric heat-tube vacuum heat collecting element of decompression empty sun protection.The eccentric heat-tube vacuum heat collecting element of bending to be drawn the curved inner glass tube 12 that outer straight section 13, eccentric straight section 14, interior straight section 15, outer straight changeover portion 16 and interior straight changeover portion 17 form by one, and the cover glass tube 2 nested arrangement sealing-in of sealing with one end circle is made.The waist of outer straight section 13 and the necking down port sealing-in of cover glass tube 2, extension is as heat pipe 1 cold junction.The glass shell heat pipe 1 of a bending is made in the sealed-off of curved inner glass tube 12 inner vacuum pumping loading working medium.The eccentric straight section 14 i.e. outer surface in heat pipe 1 hot junction of curved inner glass tube 12 is manufactured with absorbing film; The cover glass tube 2 inner surface Magnetron Sputtered Al Film of about 180 degree of angle of circumference scopes makes semicircle minute surface 19; It is inner that eccentric straight section 14 gos deep into cover glass tube 2; Eccentric straight section 14 with absorbing film is connected with semicircle minute surface 19 optically focused.
Empty sun protection device passes hot linked thermal sensitive permanent magnetic steel boosting driving element by one with heat pipe 1 hot junction and forms with the heat straight-tube 3 that thermal sensitive permanent magnetic steel boosting driving element is in transmission connection.Thermal sensitive permanent magnetic steel boosting driving element comprise thermal sensitive permanent magnetic steel soft iron drive to bimetal leaf boosting parts 6; Thermal sensitive permanent magnetic steel soft iron drives comprising one piece of thermal sensitive permanent magnetic steel 4 and one block of soft iron 5; Thermal sensitive permanent magnetic steel 4 is connected with heat pipe 1 hot junction i.e. interior straight section 15 low thermal resistance by one piece of thermal conductance 7.When needing, shadow shield is set on thermal sensitive permanent magnetic steel 4 and prevents the thermal sensitive permanent magnetic steel 4 that sunshine direct projection is being in vacuum heat-insulating layer from making its misoperation.Thermal conductance 7 solves the problem that between thermal sensitive permanent magnetic steel 4 and heat pipe 1, transmission of heat by contact thermal resistance is large.Soft iron 5 is tied and can does along the movable of heat collecting element direction of axis line and be in transmission connection by transmission steel wire 8 and heat straight-tube 3.Soft iron 5 pushed away from thermal sensitive permanent magnetic steel 4 by spring 9 thrust or has the trend pusheding away from thermal sensitive permanent magnetic steel 4.The stiff end of bimetal leaf boosting parts 6 is connected with thermal conductance 7.Soft iron 5 outer surface is as the linkage interface with bimetal leaf boosting parts 6 free end.Described bimetal leaf boosting parts from loss of excitation state to the temperature-fall period having magnetic state to change in thermal sensitive permanent magnetic steel, produce deformation and help to promote the driving of thermal sensitive permanent magnetic steel soft iron to adhesive.
Heat straight-tube 3 thickness 0.22 millimeter, width 40 millimeters; Phosphor-copper thin plate makes.Heat straight-tube 3 and heat pipe 1 hot junction bottom end i.e. interior straight section 15 adopts one-dimensional movement auxiliary structure low thermal resistance to be connected.Heat straight-tube 3 can be stretched out to retract along heat collecting element direction of axis line and be moved forward and backward; Heat straight-tube 3 contains one section of extension diameter section 10, the shape of outer end 11 of extension diameter section 10 and matching of cover glass tube 2 tail end inner surface.
Optically focused connection refers to that the eccentric straight section 14 of band absorbing film moves from the top down near semicircle minute surface 19 with the symmetrical plane of its axial line along semicircle minute surface 19 but do not contact with semicircle minute surface 19 in order to avoid form heat bridge to cause heat-energy losses.As seen from Figure 1: the sunlight entering cover glass tube 2, mid portion directly changes into heat energy on the absorbing film of eccentric straight section 14; The overwhelming majority in two side portions arrives on absorbing film through the once or repeatedly reflection of semicircle minute surface 19 and changes into heat energy.The sunlight passed from the gap between eccentric straight section 14 and cover glass tube 2 likely passes cover glass tube 2 through the reflection of semicircle minute surface 19 and escapes.Gap width between eccentric straight section 14 and cover glass tube 2 is about 2 millimeters.
In heat pipe 1 hot junction, inner bottom arranges short cylinder liquid-sucking core 18.Short cylinder liquid-sucking core 18 adopts glass fibre to make; Length 50 millimeters.Short cylinder liquid-sucking core 18, along the circumferential layout of heat pipe 1 inwall, from the spacing distance 45 millimeters of heat pipe bottom, overlays in heat pipe 1 inwall with jump ring.
The operation principle of 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; thermal sensitive permanent magnetic steel 4 temperature be connected with heat pipe 1 low thermal resistance does not reach loss of excitation temperature; thermal sensitive permanent magnetic steel 4 holds soft iron 5 by heat straight-tube 3 toward Zola; make heat straight-tube 3 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 4 temperature raises magnetic force and disappears; spring 9 pushes soft iron 5 and heat straight-tube 3 to the right side, makes the outer end 11 of heat straight-tube 3 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 heat pipe 1 internal 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 4 temperature reduces magnetic force and recovers and attract soft iron 5 that heat straight-tube 3 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. 2 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 18 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 1 is in low-level.
When Fig. 2 embodiment short cylinder liquid-sucking core 18 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 18 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. 2 embodiment, when heat pipe 1 normally works, allow tens of milliseconds section below it dry or partly dry so short cylinder liquid-sucking core 18 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 18 sticking.
Bimetal leaf boosting parts 6 are in thermal sensitive permanent magnetic steel 4 from loss of excitation state to the temperature-fall period having magnetic state to change, and its free end of the generation deformation left bending soft iron 5 that promotes is moved to the left.Due to the existence of bimetal leaf boosting parts 6; the trueness error overcoming associated components make soft iron 5 from thermal sensitive permanent magnetic steel 4 excessively away from; the problem of the inadequate empty sun protection device cisco unity malfunction of thermal sensitive permanent magnetic steel 4 suction, makes the work of thermal sensitive permanent magnetic steel driving element more rapid reliable.
Fig. 2 embodiment, for the eccentric heat-tube vacuum heat collecting element of cover glass tube 2 diameter 70, arranges heat radiation paster even if do not adopt at cover glass tube tail end inwall, and 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. 2 embodiment 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 11 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.
Fig. 3 provides third embodiment of the invention.
In Fig. 3; in 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; an embedded straight tube heat-tube vacuum heat collecting element boosting decompression empty sun protection device is set, forms a boosting decompression empty sun protection wing plate heat pipe vacuum heat collection element.By cover glass tube 2 and inner glass tube 21 nested, concentric being set with wing plate 20, wing plate heat pipe vacuum heat collection element arranges that sealing-in is made; Inner glass tube 21 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 20 surface is manufactured with absorbing film.Empty sun protection device is made up of thermal sensitive permanent magnetic steel boosting driving element and heat straight-tube 3.Thermal sensitive permanent magnetic steel boosting driving element comprises one piece of thermal sensitive permanent magnetic steel, 4, one block of soft iron 5 and bimetal leaf boosting parts 6; Thermal sensitive permanent magnetic steel 4 is connected with heat pipe 1 hot junction low thermal resistance by thermal conductance 7.When needing, shadow shield is set on thermal sensitive permanent magnetic steel 4 and prevents the thermal sensitive permanent magnetic steel 4 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 4 and heat pipe 1, transmission of heat by contact thermal resistance is large.Soft iron 5 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 8 and heat straight-tube 3, and soft iron 5 pushed away from thermal sensitive permanent magnetic steel 4 by spring 9 thrust or has the trend pusheding away from thermal sensitive permanent magnetic steel 4.Heat straight-tube 3 makes of thin plate.As the linkage interface with bimetal leaf boosting parts 6 free end in the middle of outside soft iron 5.Bimetal leaf boosting parts 6 stiff end is fixed.Heat straight-tube 3 with one section of extension diameter section 10, the shape of outer end 11 of extension diameter section 10 and matching of cover glass tube 2 tail end inner surface.Heat straight-tube 3 adopts one-dimensional movement auxiliary structure low thermal resistance to be connected with heat pipe 1 hot junction bottom end, and heat straight-tube 3 can be stretched out to retract along heat pipe 1 direction of axis line and be moved forward and backward.
The operation principle of Fig. 3 embodiment: when embedding the metal heat pipe vacuum heat collection 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 wing plate heat pipe absorbing film, and heat energy passes to inside heat pipe working medium 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 4 temperature be connected with heat pipe 1 low thermal resistance by thermal conductance 7 does not reach loss of excitation temperature; thermal sensitive permanent magnetic steel 4 holds soft iron 11 by heat straight-tube 3 toward Zola, and heat straight-tube 3 is not conducted heat and connects cover glass tube 2 afterbody, empty sun protection device is in closedown adiabatci condition.The normal thermal-arrest of heat collecting element.
When heat collecting element is in air drying state; thermal sensitive permanent magnetic steel 4 temperature raises magnetic force and disappears; spring 9 pushes soft iron 5 and heat straight-tube 3 to the right side, makes the outer end 11 of heat straight-tube 3 stretch out heat transfer and connects cover glass tube 2 afterbody, 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, realize the empty sun protection of heat collecting element.
When heat collecting element is in air drying state, temperature its shape high of bimetal leaf boosting parts 6 is not curved left, ensures that soft iron 5 tension moves to right.
Later heat collecting element departs from air drying state, and thermal sensitive permanent magnetic steel 4 temperature reduces magnetic force and recovers and attract soft iron 5 that heat straight-tube 3 is retracted not conduct heat connection cover glass tube 2 afterbody, and empty sun protection device is in closedown adiabatci condition, and heat collecting element can normally work again.
Bimetal leaf boosting parts 6 are in thermal sensitive permanent magnetic steel 4 from loss of excitation state to the temperature-fall period having magnetic state to change, and its free end of the generation deformation left bending soft iron 5 that promotes is moved to the left (as shown in phantom in FIG.).Due to the existence of bimetal leaf boosting parts 6; the trueness error overcoming associated components make soft iron 5 from thermal sensitive permanent magnetic steel 4 excessively away from; the problem of the inadequate empty sun protection device cisco unity malfunction of thermal sensitive permanent magnetic steel 4 suction, makes the work of thermal sensitive permanent magnetic steel driving element more rapid reliable.
Claims (3)
1. boosting decompression empty sun protection vacuum heat-pipe heat collecting element, comprise the metal heat pipe heat collecting element that can cut down sealing-in cover glass tube and metal fin heat pipe, glass wing plate heat pipe vacuum heat collection element in being made up of cover glass tube and the sealing-in of band wing plate inner glass tube nested, concentric layout, the all-glass vacuum heat collector tube element that sealing-in is made is arranged by cover glass tube and inner glass tube nested, concentric, the eccentric heat collector tube element be made up of bending inner glass tube and the sealing-in of cover glass tube nested arrangement with the outer straight section of eccentric straight section and the positive heart with one and be connected with insertion glass heat pipe low thermal resistance wherein the plug-in type heat collector tube element made by all-glass vacuum thermal-collecting tube, described heat collecting element is vertical or tilt to install, and described heat pipe relies on gravity work, it is characterized in that the vacuum heat-insulating layer of heat collecting element tail end contains a controlled heat transfer path,
Described controlled heat transfer path comprise heat radiation paster, heat sink, with heat collecting element heat pipe hot junction or inner glass tube conduct heat linkage interface boosting thermodynamic-driven device and be in transmission connection with boosting thermodynamic-driven device or integrally manufactured with boosting thermodynamic-driven device in sheet, described heat transfer path has two kinds of stable states: middle sheet conduct heat simultaneously connect heat sink with dispel the heat paster time unlatching heat conduction state; 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; Boosting thermodynamic-driven device comprise thermal sensitive permanent magnetic steel soft iron drive to bimetal leaf boosting parts; Thermal sensitive permanent magnetic steel soft iron drives comprising 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 middle; Described thermal sensitive permanent magnetic steel soft iron drive to containing and the linkage interface of bimetal leaf boosting parts; Described bimetal leaf boosting parts from loss of excitation state to the temperature-fall period having magnetic state to change in thermal sensitive permanent magnetic steel, produce deformation and help to promote the driving of thermal sensitive permanent magnetic steel soft iron to adhesive;
Or, described controlled heat transfer path comprise with heat collecting element heat pipe hot junction or inner glass tube conduct heat linkage interface boosting thermodynamic-driven device and be in transmission connection with boosting thermodynamic-driven device or the heat straight-tube integrally manufactured with boosting thermodynamic-driven device, described empty sun protection device has two kinds of stable states: heat straight-tube stretch out heat transfer connect cover glass tube tail end time unlatching heat conduction state; The closedown adiabatci condition that heat straight-tube retraction is not conducted heat when connecting cover glass tube tail end; Heat straight-tube directly or by a heat sink adopts the secondary low thermal resistance of one-dimensional movement to be connected with inner glass tube tail end or heat pipe hot junction bottom end, and described heat sink is connected with inner glass tube tail end or heat pipe hot junction bottom end low thermal resistance; Described heat straight-tube can move forward and backward along heat collecting element direction of axis line; The outer end shape of heat straight-tube and matching of cover glass tube tail end inner surface; Boosting thermodynamic-driven device comprise thermal sensitive permanent magnetic steel soft iron drive to bimetal leaf boosting parts; Thermal sensitive permanent magnetic steel soft iron drives comprising 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; Described thermal sensitive permanent magnetic steel soft iron drive to containing and the linkage interface of bimetal leaf boosting parts; Described bimetal leaf boosting parts from loss of excitation state to the temperature-fall period having magnetic state to change in thermal sensitive permanent magnetic steel, produce deformation and help to promote the driving of thermal sensitive permanent magnetic steel soft iron to adhesive.
2. a working medium high position gathers boosting decompression empty sun protection vacuum heat-pipe heat collecting element, comprise the metal heat pipe heat collecting element that can cut down sealing-in cover glass tube and metal fin heat pipe, glass wing plate heat pipe vacuum heat collection element in being made up of cover glass tube and the sealing-in of band wing plate inner glass tube nested, concentric layout, the all-glass vacuum heat collector tube element that sealing-in is made is arranged by cover glass tube and inner glass tube nested, concentric, the eccentric heat collector tube element be made up of bending inner glass tube and the sealing-in of cover glass tube nested arrangement with the outer straight section of eccentric straight section and the positive heart with one and be connected with insertion glass heat pipe low thermal resistance wherein the plug-in type heat collector tube element made by all-glass vacuum thermal-collecting tube, described heat collecting element is vertical or tilt to install, and described heat pipe relies on gravity work, it is characterized in that containing a controlled heat transfer path between the two at cover glass tube tail end and inner glass tube tail end or heat pipe hot junction bottom end,
Described controlled heat transfer path comprise heat radiation paster, heat sink, with heat collecting element heat pipe hot junction or inner glass tube conduct heat linkage interface boosting thermodynamic-driven device and be in transmission connection with boosting thermodynamic-driven device or integrally manufactured with boosting thermodynamic-driven device in sheet, described heat transfer path has two kinds of stable states: middle sheet conduct heat simultaneously connect heat sink with dispel the heat paster time unlatching heat conduction state; 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; Boosting thermodynamic-driven device comprise thermal sensitive permanent magnetic steel soft iron drive to bimetal leaf boosting parts; Thermal sensitive permanent magnetic steel soft iron drives comprising 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 middle; Described thermal sensitive permanent magnetic steel soft iron drive to containing and the linkage interface of bimetal leaf boosting parts; Described bimetal leaf boosting parts from loss of excitation state to the temperature-fall period having magnetic state to change in thermal sensitive permanent magnetic steel, produce deformation and help to promote the driving of thermal sensitive permanent magnetic steel soft iron to adhesive;
Or, described controlled heat transfer path comprise with heat collecting element heat pipe hot junction or inner glass tube conduct heat linkage interface boosting thermodynamic-driven device and be in transmission connection with boosting thermodynamic-driven device or the heat straight-tube integrally manufactured with boosting thermodynamic-driven device, described empty sun protection device has two kinds of stable states: heat straight-tube stretch out heat transfer connect cover glass tube tail end time unlatching heat conduction state; The closedown adiabatci condition that heat straight-tube retraction is not conducted heat when connecting cover glass tube tail end; Heat straight-tube directly or by a heat sink adopts the secondary low thermal resistance of one-dimensional movement to be connected with inner glass tube tail end or heat pipe hot junction bottom end, and described heat sink is connected with inner glass tube tail end or heat pipe hot junction bottom end low thermal resistance; Described heat straight-tube can move forward and backward along heat collecting element direction of axis line; The outer end shape of heat straight-tube and matching of cover glass tube tail end inner surface; Boosting thermodynamic-driven device comprise thermal sensitive permanent magnetic steel soft iron drive to bimetal leaf boosting parts; Thermal sensitive permanent magnetic steel soft iron drives comprising 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; Described thermal sensitive permanent magnetic steel soft iron drive to containing and the linkage interface of bimetal leaf boosting parts; Described bimetal leaf boosting parts from loss of excitation state to the temperature-fall period having magnetic state to change in thermal sensitive permanent magnetic steel, produce deformation and help to promote the driving of thermal sensitive permanent magnetic steel soft iron to adhesive;
The liquid refrigerant position that when being used for the liquid refrigerant of sticking interception from top to raise heat pipe end-of-job in inside, described heat pipe hot junction containing working medium sticking interception device, bottom is gathered, described working medium sticking interception device jump ring overlays and relies on natural resiliency to overlay in heat pipe hot junction inwall in heat pipe hot junction inwall or working medium sticking interception device, specifically comprises:
1) contain annular liquid storage tank working medium sticking interception device in inwall bottom, 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%;
Or contain short cylinder liquid-sucking core working medium sticking interception device in glass 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;
Or contain the thin capillary liquid suction core working medium sticking interception device of a width 2 to 30 millimeters at inner bottom place, glass heat pipe hot junction, the length of 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;
Or contain 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 at inner bottom place, glass 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.
3., according to the heat collector described in claims 1 or 2, 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.
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