CN203274318U - Pressure reducing stagnation protection inserting type heat pipe vacuum heat collecting element - Google Patents
Pressure reducing stagnation protection inserting type heat pipe vacuum heat collecting element Download PDFInfo
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- CN203274318U CN203274318U CN2013202057753U CN201320205775U CN203274318U CN 203274318 U CN203274318 U CN 203274318U CN 2013202057753 U CN2013202057753 U CN 2013202057753U CN 201320205775 U CN201320205775 U CN 201320205775U CN 203274318 U CN203274318 U CN 203274318U
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/40—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
- F24S10/45—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors the enclosure being cylindrical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/90—Solar heat collectors using working fluids using internal thermosiphonic circulation
- F24S10/95—Solar heat collectors using working fluids using internal thermosiphonic circulation having evaporator sections and condenser sections, e.g. heat pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
- F24S40/50—Preventing overheating or overpressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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Abstract
Provided is a pressure reducing stagnation protection inserting type heat pipe vacuum heat collecting element. A stagnation protector is arranged in a vacuum heat insulating layer at the tail end of a full glass vacuum heat pipe heat collecting element body, and a heat pipe is inserted in an inner cavity of the full glass vacuum heat pipe heat collecting element body. The stagnation protector comprises a heating power driving device and a heat transfer straight barrel. The pressure reducing stagnation protection inserting type heat pipe vacuum heat collecting element is characterized in that the heat transfer straight barrel is connected with the tail end of an inner glass pipe through a one-dimensional moving pair in a low heat resistance mode. According to the pressure reducing stagnation protection inserting type heat pipe vacuum heat collecting element, a boosting stagnation protector is arranged inside the vacuum heat insulating layer at the tail end of the full glass vacuum heat pipe heat collecting element body, and the heat pipe is inserted in the inner cavity of the full glass vacuum heat pipe heat collecting element body. The pressure reducing stagnation protection inserting type heat pipe vacuum heat collecting element is characterized in that the heat transfer straight barrel is connected with the tail end of the inner glass pipe through the one-dimensional moving pair in the low heat resistance mode, a boosting heating power driving device comprises a temperature-sensitive permanent magnet steel and soft iron driving pair and a bimetal boosting part, and the bimetal boosting part drives the temperature-sensitive permanent magnet steel and soft iron driving pair to actuate. The interior of the heat pipe is not more than two atmospheres only by adopting the small-power stagnation protector.
Description
Technical field
The utility model relates to decompression empty sun protection plug-in type heat-tube vacuum heat collecting element.
Background technology
Vacuum heat collection pipe arranges vacuum heat-insulating layer between its cover glass tube and inner glass tube, can make also can provide domestic hot-water's vacuum solar water heater winter.With the solar water heater of heat-pipe vacuum heat collecting pipe manufacturing have more in pipe anhydrous Energy Efficiency Ratio high, meet safe drinking water standard, single tube and damage the advantage such as in the same old way work.Therefore.In pipe, anhydrous solar energy evacuated water-both with hot pipe might capture the increasing market share.
Adopt the integrated glass heat pipe have can with cover glass tube melt envelope, glass heat pipe surface can directly make absorbing film heat transfer link few, can adopt the splendid water of thermophysical property to make the advantages such as working medium.
But during air drying, heat collecting element inside heat pipe temperature can reach 230 ℃, and saturated vapor pressure corresponding to this temperature is 28.53 atmospheric pressure, and corresponding working medium filling weight is that the working medium volumetric ratio is 1.1% with the ratio of heat pipe volume, and namely every 1 liter capacity has 11 ml waters.
The pressure of inside heat pipe in the time of can reducing air drying by reducing the working medium filling weight, take device of working medium as example: 0.2% when 0.5% during from 5 milliliters/1000 milliliters are reduced to 2 milliliters/1000 milliliters when working medium filling weight/heat pipe plot ratio, correspondingly its highest saturated vapor pressure is reduced to approximately 3.7 atmospheric pressure of 140 ℃ from approximately 10 atmospheric pressure of 180 ℃, and inside heat pipe when approximately 3.7 atmospheric high-vapor-pressures continue to be warming up to 180 ℃ from 140 ℃ internal pressure 4 atmospheric pressure left and right are only arranged.But the internal pressure when the working medium filling weight can not be only with air drying sometimes decides.For a working medium filling weight/heat pipe plot ratio be 0.2%, the heat pipe of 1000 milliliters of internal capacities, 2000 millimeters of length, if internal pressure is no more than 4 atmospheric pressure when making 230 ℃ of air dryings, the working medium filling weight is approximately 1.8 milliliters.Be light-pipe structure even problem is described heat pipe, when tilting approximately 45 degree work, the condensed water of cold junction, the circulating water in hot junction add that 0.353 milliliter of sum of the water yield of 85 ℃ of water vapours can be far away from 1.8 milliliters.
Make working medium filling weight/heat pipe plot ratio greater than 0.2% even 0.3% in order to satisfy heat pipe normal operation, and guarantee glass heat pipe not because air drying and bombing must be taked the empty sun protection measure.
The anti-air drying all-glass vacuum of Chinese invention patent 2009101951003 heat collector tube element; disclosed a kind of empty sun protection all-glass vacuum heat collector tube element; consist of by between vacuum heat collection element absorber and cover glass-tube, controlled heat transfer path being set; controlled heat transfer path is comprised of movable heat transfer piece and actuator, it is characterized in that containing the heating power transducing actuator that is connected with vacuum heat collection element absorber low thermal resistance.Because this patent is not specially for the gravity assisted heat pipe heat collecting element, thereby specific aim is not strong; The uniformity of the original product of bimetal leaf heating power transducing actuator that it adopts is just bad, restorable ability can reduce again after temperature distortion repeatedly, and operating point settings, control variables input, comparison, transducing and the Power supply that its control system of bearing is relevant and execution function far can not normally effectively be worked because precision is affected 20 year possible projected life of heat collecting element.
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 by shell and internal working medium.Its operation principle is: heat energy is i.e. inwards arrow marked position input side by side from the hot junction of below, make the vaporization of being heated of the working medium at heat pipe 1 inner bottom place, steam is under the effect of pressure reduction, upwards advance to the heat pipe cold junction and be arrow side by side outwards marked position emit heat energy and be supplied to and load and be condensed into the cold junction of liquid below being back under Action of Gravity Field, in the vaporization of again being heated of hot junction working medium ..., constantly circulation realizes the two phase flow heat transfer circulation thus.Heat pipe has excellent heat-transfer capability, heat flow density ability to transform and isothermal characteristics.If 100 watts of heat pipe 1 hot junction inputs, its cold junction output is the highest can reach 97 watts even higher.
If attempt heat pipe 1 to Fig. 4 only from following input heat energy, and do not take heat energy away, heat pipe 1 steam inside is pressed and can sharply be risen.If heat pipe 1 adopts water as working medium and abundant, when heat pipe 1 temperature reached 230 ℃, inner maximum pressure can reach 28.53 atmospheric pressure.
If attempt the heating and take out heat energy from following a section of whole heat pipe 1 length 3% of accounting for that for example begins from the bottom a little more than heat pipe 1 bottom local comprehensively from top to bottom of the heat pipe 1 of Fig. 4, namely only make position that the bottom accounts for heat pipe 1 total length 3% forward simultaneously as overlapping cold junction, the vapour pressure of heat pipe 1 inside can drop to the saturated vapor pressure corresponding with the temperature of following cold junction.When for example water is as working medium, 100 ℃ of the temperature of maintenance heat pipe 1 following overlapping cold junction, even top other parts are heated to 230 ℃, because the liquid refrigerant of heat pipe 1 inside all is collected in described overlapping cold junction, heat pipe 1 hot junction above except described overlapping cold junction is whole dry owing to having working medium to replenish, and the two phase flow heat transfer mechanism has not existed.The steam pressure of heat pipe 1 inside 1 atmospheric pressure of also only having an appointment.
An example of overlapping cold junction be thermotube wall with absorbing film, absorb sunshine and input as heat energy, connect described thermotube wall and heat energy shifted with the Thermal Conduction Equipment low thermal resistance simultaneously.
Thisly make that heat pipe 1 is in tilted layout, heat energy is inputted and only perhaps be there is no what meaning with following a bit of design as overlapping cold junction in other occasions above heat pipe 1, but the empty sun protection that is used for solar collection element, because only need minimum a part of heat radiation power---when this part heat radiation power was used for guaranteeing that air drying occurs, the peak of the initial stage inside heat pipe vapour pressure that the empty sun protection device begins to work was no more than setting value; This part heat radiation power also is greater than described overlapping cold junction as the heat energy input power in hot junction---thus have advantages of 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 can utilize the heat collecting element tail end as heat dissipation interface.
Can see, the area of overlapping cold junction is less, the needed heat radiation power of described empty sun protection device is also less, more favourable.Actual heat collecting element needs the device of tail box and so on to settle.The tail box can hide the tail end of heat collecting element.The part that is hidden by the tail box does not belong to overlapping cold junction.Why also can use overlapping cold junction; be because some heat collecting element empty sun protection device relatively be fit to be installed on vacuum heat-insulating layer drum-shaped section or; heat collection element cover glass pipe is with necking segment and be to adopt to assemble inner glass tube after necking segment forms, 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 forms is not suitable for heat radiation, dispel the heat from described round end-blocking cover glass tube drum-shaped section up with regard to needing to utilize.Heat pipe or the inner glass tube end section corresponding with described drum-shaped section belong to overlapping cold junction.
China's 912050845 utility model electric cooker automatic magnetic temperature detect switch (TDS)s have been introduced a kind of pyromagnetic force inverting element operation principle of utilizing.
Summary of the invention
The purpose of this utility model is that decompression empty sun protection plug-in type heat-tube vacuum heat collecting element will be provided.
One of the technical scheme in the invention for solving the technical problem: make a decompression empty sun protection plug-in type heat-tube vacuum heat collecting element, comprise all-glass vacuum heat collector tube element, plug-in type heat pipe and empty sun protection device.The plug-in type heat pipe is connected with all-glass vacuum heat collector tube element internal chamber wall low thermal resistance.Empty sun protection device is arranged in the vacuum heat-insulating layer of all-glass vacuum heat collector tube element tail end.All-glass vacuum heat collector tube element is made with cover glass tube and the sealing-in of inner glass tube nested, concentric layout.Described heat collecting element is vertical or tilt to install.Described heat pipe relies on gravity work.Empty sun protection device comprises that one passes hot linked thermodynamic-driven device with the inner glass tube tail end and is in transmission connection with the thermodynamic-driven device or the heat straight-tube integrally manufactured with the thermodynamic-driven device.Described empty sun protection device has two kinds of stable states: heat straight-tube is stretched out the unlatching heat conduction state that conducts heat when connecting the cover glass tube tail end; The heat straight-tube adiabatci condition of closing when connecting the cover glass tube tail end of not conducting heat of retracting.Described thermodynamic-driven device comprises temperature-sensitive permanent-magnet steel driving element, bimetallic strip driver spare, memory alloy actuator spare and bellows driving element.Directly or by a heat sink be connected with one-dimensional movement pair low thermal resistance between heat straight-tube and inner glass tube tail end.Heat straight-tube can move forward and backward along the heat collecting element direction of axis line.The outer end shape of heat straight-tube and cover glass tube tail end inner surface match.
Can also make described thermodynamic-driven device comprise a temperature-sensitive permanent-magnet steel and a soft iron; The temperature-sensitive permanent-magnet steel is connected with the inner glass tube low thermal resistance by thermal conductance; Soft iron is tied and can moves forward and backward and be in transmission connection by transmission steel wire and heat straight-tube along the heat collecting element direction of axis line.
Two of the technical scheme in the invention for solving the technical problem: make a decompression empty sun protection plug-in type heat-tube vacuum heat collecting element, comprise all-glass vacuum heat collector tube element, plug-in type heat pipe and boosting empty sun protection device.The plug-in type heat pipe is connected with all-glass vacuum heat collector tube element internal chamber wall low thermal resistance.The boosting empty sun protection device is arranged in the vacuum heat-insulating layer of all-glass vacuum heat collector tube element tail end.All-glass vacuum heat collector tube element is made with cover glass tube and the sealing-in of inner glass tube nested, concentric layout.Described heat collecting element is vertical or tilt to install.Described heat pipe relies on gravity work.The boosting empty sun protection device comprises that one passes hot linked boosting thermodynamic-driven device with described heat pipe hot junction and is in transmission connection with boosting thermodynamic-driven device or the heat straight-tube integrally manufactured with the thermodynamic-driven device.The boosting empty sun protection device has two kinds of stable states: heat straight-tube is stretched out the unlatching heat conduction state that conducts heat when connecting the cover glass tube tail end; The heat straight-tube adiabatci condition of closing when connecting the cover glass tube tail end of not conducting heat of retracting.Directly or by a heat sink be connected with one-dimensional movement pair low thermal resistance between heat straight-tube and inner glass tube tail end.Heat straight-tube can move forward and backward along the heat collecting element direction of axis line.The outer end shape of heat straight-tube and cover glass tube tail end inner surface match.Described boosting thermodynamic-driven device comprise temperature-sensitive permanent-magnet steel soft iron drive to bimetal leaf boosting parts.Temperature-sensitive permanent-magnet steel soft iron drives comprising a temperature-sensitive permanent-magnet steel and a soft iron.The temperature-sensitive permanent-magnet steel is connected by thermal conductance and inner glass tube or heat pipe hot junction low thermal resistance.Soft iron is tied and can moves forward and backward and be in transmission connection by transmission steel wire and heat straight-tube along the heat collecting element direction of axis line.Described temperature-sensitive permanent-magnet steel soft iron drives containing the linkage interface with bimetal leaf boosting parts.Described bimetal leaf boosting parts the temperature-sensitive permanent-magnet steel from the loss of excitation state to the temperature-fall period that has magnetic state to change, produce deformation and help to promote temperature-sensitive permanent-magnet steel soft iron and drive adhesive.
Can also make cover glass tube tail end inner surface low thermal resistance connect a heat radiation paster.
Can also make that the cover glass tube tail end is inboard to be connected by a high thermal resistance of jump ring with the inner glass tube tail end.
Can also make described heat collecting element tail end for be no more than the part of heat collecting element total length 6% forward from heat collecting element tail end bottom outer surface.
The beneficial effects of the utility model: the utility model decompression empty sun protection plug-in type heat-tube vacuum heat collecting element adopt the place's heat radiation of heat pipe bottom collect liquid refrigerant in place, bottom, heat pipe hot junction, the empty sun protection design of blocking-up inside heat pipe two phase flow heat transfer, heat radiation power can reduce greatly.For example: a heat collecting element of exporting 70 watts, 3 milliliters of working medium filling weights.Employing dispels the heat to prevent the technical scheme of heat pipe bombing at the uniform controlled heat transfer path of heat pipe hot end surface, the heat radiation power of controlled heat transfer path is 40 watts, the inside heat pipe temperature is the highest to be also had more than 150 ℃, and corresponding water vapor pressure still can reach the voltage endurance capability that 4.8 atmospheric pressure exceed 58 millimeters of external diameters, 1.8 millimeters inner glass tubes of wall thickness.The utility model is for the heat collecting element of 70 watts of same outputs, and decompression empty sun protection heat transfer path only needs 10 watts of heat radiation powers, just can come the water of heat absorbing glass inside heat pipe with the speed of 0.25 ml/min when air drying occurs.Air drying began approximately after 6 minutes, although the temperature on plug-in type heat pipe surface raises approximately 30 ℃ at that time, the heat pipe hot junction inner except the place, bottom all dry, vapour pressure less than 1.5 atmospheric pressure.The heat radiation power of saving 30 watts makes cost that larger reduction is arranged, and the minimizing heat transfer path increases substantially venting 75% and the reliability of vacuum heat-insulating layer.Key is the bombing problem that can effectively solve the major diameter glass heat pipe.The utility model adopts a small-power empty sun protection device just can guarantee that plug-in type inside heat pipe water vapor pressure is no more than 2 atmospheric pressure all the time, and does not affect the normal operation of heat collecting element fully.
The heat straight-tube heat transfer area is large, rigidity is strong, it is few to the absorption resource occupation of heat collecting element to utilize the heat collecting element bottom to build heat transfer path.
Temperature-sensitive permanent-magnet steel driving element high conformity, good reproducibility, control accuracy are high, long service life, performance are satisfactory.
Description of drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is that a boosting decompression empty sun protection plug-in type heat-tube vacuum heat collecting element is faced structural representation.
Fig. 2 is TV structure schematic diagram on a boosting decompression empty sun protection plug-in type heat-tube vacuum heat collecting element.
To be Fig. 1 look the sectional structure schematic diagram on the left side at heat straight-tube 7 places to Fig. 3.
Fig. 4 is the light-pipe structure gravity assisted heat pipe structural representation of a tiltably-mounted.
Fig. 5 is the expanded view of a slice heat straight-tube.
Fig. 6 is an all-glass vacuum solar energy collection tube structural representation.
1. heat pipes in figure; 2. cover glass tube; 3. inner glass tube; 4. heat radiation paster; 5. heat sink; 6. boosting temperature-sensitive permanent-magnet steel driving element; 7. heat straight-tube; 8. temperature-sensitive permanent-magnet steel; 9. soft iron; 10. bimetal leaf boosting parts; 11. thermal conductance; 12. shadow shield; 13. plate washer; 14. transmission steel wire; 15. spring; 16. connecting plate; 17. four paws jump ring; 18. square hole; 19. breach.
The specific embodiment
Fig. 1, Fig. 2 and Fig. 3 provide embodiment of the utility model.
In Fig. 1 to 3; a boosting empty sun protection device is set in the vacuum heat-insulating layer of an all-glass vacuum heat collector tube element; inner glass tube 3 internal chamber wall low thermal resistances at all-glass vacuum heat collector tube element connect a plug-in type heat pipe 1, form a boosting decompression empty sun protection plug-in type heat-tube vacuum heat collecting element.All-glass vacuum heat collector tube element is made with cover glass tube 2 and inner glass tube 3 nested, concentric layout sealing-ins.The boosting empty sun protection device comprises that heat radiation paster 4, heat sink 5, boosting temperature-sensitive permanent-magnet steel driving element 6 and heat straight-tube 7 form.The shape of heat radiation paster 4 outer surfaces and the shape of cover glass tube 2 tail end inner surfaces match.0.22 millimeter of heat radiation paster 4 thickness, 40 millimeters of width.Heat radiation paster 4 use jump rings overlay in cover glass tube 2 inwalls.0.22 millimeter of heat sink 5 thickness, 40 millimeters of width.Boosting temperature-sensitive permanent-magnet steel driving element 6 comprises a temperature-sensitive permanent-magnet steel 8, a soft iron 9 and bimetal leaf boosting parts 10; Temperature-sensitive permanent-magnet steel 8 is connected with inner glass tube 3 low thermal resistances by thermal conductance 11; Contain shadow shield 12 above temperature-sensitive permanent-magnet steel 8, prevent that the temperature-sensitive permanent-magnet steel 8 of sunshine direct projection in being in vacuum heat-insulating layer from making its misoperation.Soft iron 9 is subjected to plate washer 13 constraints in both sides can do move forward and backward and be in transmission connection by transmission steel wire 14 and heat straight-tube 7 along the heat collecting element direction of axis line, and soft iron 9 is subjected to spring 15 thrust to pushed away from permanent-magnet steel 8 or has the trend that pushed away from permanent-magnet steel 8.Conduct and bimetal leaf boosting parts 10 free-ended linkage interfaces in the middle of soft iron 9 outsides.The stiff end of bimetal leaf boosting parts 10 is connected with plate washer 13.0.22 millimeter of heat straight-tube 7 thickness, 40 millimeters of width.Adopt one-dimensional movement auxiliary structure low thermal resistance to be connected between heat straight-tube 7 and heat sink 5, heat straight-tube 7 can be done stretch out retraction along the heat collecting element direction of axis line and be moved forward and backward.Heat sink 5 parcel low thermal resistances connect heat pipe 1 place, bottom, hot junction and overlay on inner glass tube 3 with jump ring.The outer end shape of heat straight-tube 7 matches with heat radiation paster 4 inner surfaces.0.22 millimeter of thermal conductance 11 thickness, 20 millimeters of width, be rolled into tubular.Thermal conductance 11 is connected with heat sink by the 16 high thermal resistances connections of rigidity of a slice connecting plate.Cover glass tube 2 tail ends inboard with inner glass tube 3 tail ends between be connected the location (the four paws jump ring does not draw, but illustrates with Fig. 6 specially for for purpose of brevity) of realizing between cover glass tube 2 and inner glass tube 3 by the high thermal resistance of four paws jump ring 17 in Fig. 1,2.
The making material of heat radiation paster 4, heat sink 5, heat straight-tube 7 comprises steel plate, aluminium sheet and copper coin.
The operation principle of Fig. 1 to 3 embodiment: the heat collecting element that described decompression empty sun protection device is installed when embedding normally is in tilted layout and when not being in the air drying state; sunshine is converted to heat energy on the inner glass tube absorbing film, heat energy passes to insertion type glass housing heat pipe 1 internal working medium by inner glass tube and makes it vaporization.Lower than 95 ℃, working substance steam flows to the cold junction heat release and condenses into liquid under differential pressure action returns to hot junction and the vaporization of being heated once again under Action of Gravity Field due to heat pipe 1 cold junction temperature ... so go round and begin again and realize the two phase flow heat transfer circulation.
At this moment; temperature-sensitive permanent-magnet steel 8 temperature that are connected with inner glass tube 3 low thermal resistances by thermal conductance 11 do not reach the loss of excitation temperature; temperature-sensitive permanent-magnet steel 8 holds soft iron 9 with the past Zola of heat straight-tube 7, makes heat straight-tube 7 not contact heat radiation paster 4, and empty sun protection device is in closes adiabatci condition.The normal thermal-arrest of heat collecting element.Marginal position when in Fig. 1, the peviform dotted line represents heat straight-tube 7 retraction.
When heat collecting element was in the air drying state, temperature-sensitive permanent-magnet steel 8 temperature rising magnetic force disappeared, and spring 14 is pushed soft iron 9 and heat straight-tube 7 to the right side, heat straight-tube 7 were stretched out conduct heat to connect heat radiation paster 4, and empty sun protection device is in the heat conduction state of opening.The heat energy in heat pipe 1 hot junction is lost to environment continually by inner glass tube 3 and empty sun protection device.The steam of heat pipe 1 inside flows to bottom place and condenses and be collected in the place, bottom under differential pressure action, clamp down on heat pipe 1 internal pressure and be in all the time low level, guarantees that heat collecting element can bombing do not realize the empty sun protection of heat collecting element.Due to the constraint of bimetal leaf boosting parts 10, maximum 2 millimeters of the distance that soft iron 9 moves right can attract soft iron 9 to return when after can guaranteeing like this, temperature-sensitive permanent-magnet steel 8 magnetic force recover once again.
When heat collecting element was in the air drying state, high its shape of the temperature of bimetal leaf boosting parts 10 was not curved left, guaranteed that soft iron 9 tensions move to right.
Heat collecting element breaks away from the air drying state later on, and temperature-sensitive permanent-magnet steel 8 temperature reduce magnetic force to be recovered and attract soft iron 9 heat straight-tube 7 to be retracted do not conduct heat to connect heat radiation paster 4, and empty sun protection device is in closes adiabatci condition, and heat collecting element can work again.
Bimetal leaf boosting parts 10 temperature-sensitive permanent-magnet steel 8 from the loss of excitation state to the temperature-fall period that has magnetic state to change, produce the deformation intermediate portion left projection promote soft iron 9 and be moved to the left (as shown in Fig. 2 mean camber line).Existence due to bimetal leaf boosting parts 10; overcome the associated components such as the heat transfer path of the linear expansion coefficient metal manufacturing more much bigger than inner glass tube 3 and temperature-sensitive permanent-magnet steel driving element 6 because Various Seasonal expand with heat and contract with cold make soft iron 9 from temperature-sensitive permanent-magnet steel 8 excessively away from; the problem of the temperature-sensitive permanent-magnet steel 8 inadequate empty sun protection device cisco unity malfunctions of suction makes 6 work of temperature-sensitive permanent-magnet steel driving element more rapid reliable.
Fig. 1 to 3 embodiment does not adopt heat radiation paster and heat sink for the all-glass vacuum heat collector tube element of cover glass tube diameter 70, inner glass tube diameter 58, and the heat radiation power of described empty sun protection device also can reach more than 10 watts.
Fig. 5 provides the expanded view of heat straight-tube 7.
In Fig. 5, heat straight-tube 7 is unfolded.Its square hole 18 is established for avoiding the four paws jump ring.Breach 19 is established for being processed into the shape that matches with cover glass tube tail end medial surface.
Fig. 6 provides the structural representation of an all-glass vacuum thermal-collecting tube.
In Fig. 6, arrange sealing-in with cover glass tube 2 and inner glass tube 3 nested, concentric, make an all-glass vacuum heat collector tube element.Inner glass tube 3 from sealing-in place stretch out forward and inner vacuum pumping loading working medium after sealed-off make a heat pipe 1, the length in heat pipe 1 hot junction is 1.8 meters.The outer surface of inner glass tube 3 is made absorbing film.Four paws jump ring 17 is arranged between cover glass tube 2 tail ends and inner glass tube 3 tail ends.
Claims (2)
1. decompression empty sun protection plug-in type heat-tube vacuum heat collecting element, comprise all-glass vacuum heat collector tube element, plug-in type heat pipe and empty sun protection device, and the plug-in type heat pipe is connected with all-glass vacuum heat collector tube element internal chamber wall low thermal resistance, empty sun protection device is arranged in the vacuum heat-insulating layer of all-glass vacuum heat collector tube element tail end, all-glass vacuum heat collector tube element is made with cover glass tube and the sealing-in of inner glass tube nested, concentric layout, described heat collecting element is vertical or tilt to install, described heat pipe relies on gravity work, empty sun protection device comprises that one passes hot linked thermodynamic-driven device with the inner glass tube tail end and is in transmission connection with the thermodynamic-driven device or the heat straight-tube integrally manufactured with the thermodynamic-driven device, described empty sun protection device has two kinds of stable states: heat straight-tube is stretched out the unlatching heat conduction state that conducts heat when connecting the cover glass tube tail end, the heat straight-tube adiabatci condition of closing when connecting the cover glass tube tail end of not conducting heat of retracting, described thermodynamic-driven device comprises temperature-sensitive permanent-magnet steel driving element, bimetallic strip driver spare, memory alloy actuator spare and bellows driving element, it is characterized in that directly or by a heat sink being connected with one-dimensional movement pair low thermal resistance between heat straight-tube and inner glass tube tail end, heat straight-tube can move forward and backward along the heat collecting element direction of axis line, the outer end shape of heat straight-tube and cover glass tube tail end inner surface match.
2. according to heat collecting element claimed in claim 1, it is characterized in that described thermodynamic-driven device comprises a temperature-sensitive permanent-magnet steel and a soft iron; The temperature-sensitive permanent-magnet steel is connected with the inner glass tube low thermal resistance by thermal conductance; Soft iron is tied and can moves forward and backward and be in transmission connection by transmission steel wire and heat straight-tube along the heat collecting element direction of axis line.
3 decompression empty sun protection plug-in type heat-tube vacuum heat collecting elements comprise all-glass vacuum heat collector tube element, plug-in type heat pipe and boosting empty sun protection device, and the plug-in type heat pipe is connected with all-glass vacuum heat collector tube element internal chamber wall low thermal resistance, the boosting empty sun protection device is arranged in the vacuum heat-insulating layer of all-glass vacuum heat collector tube element tail end, all-glass vacuum heat collector tube element is made with cover glass tube and the sealing-in of inner glass tube nested, concentric layout, described heat collecting element is vertical or tilt to install, described heat pipe relies on gravity work, the boosting empty sun protection device comprises that one passes hot linked boosting thermodynamic-driven device with described heat pipe hot junction and is in transmission connection with boosting thermodynamic-driven device or the heat straight-tube integrally manufactured with the thermodynamic-driven device, the boosting empty sun protection device has two kinds of stable states: heat straight-tube is stretched out the unlatching heat conduction state that conducts heat when connecting the cover glass tube tail end, the heat straight-tube adiabatci condition of closing when connecting the cover glass tube tail end of not conducting heat of retracting, it is characterized in that directly or by a heat sink being connected with one-dimensional movement pair low thermal resistance between heat straight-tube and inner glass tube tail end, heat straight-tube can move forward and backward along the heat collecting element direction of axis line, the outer end shape of heat straight-tube and cover glass tube tail end inner surface match, described boosting thermodynamic-driven device comprise temperature-sensitive permanent-magnet steel soft iron drive to bimetal leaf boosting parts, temperature-sensitive permanent-magnet steel soft iron drives comprising a temperature-sensitive permanent-magnet steel and a soft iron, the temperature-sensitive permanent-magnet steel is connected by thermal conductance and inner glass tube or heat pipe hot junction low thermal resistance, soft iron is tied and can moves forward and backward and be in transmission connection by transmission steel wire and heat straight-tube along the heat collecting element direction of axis line, described temperature-sensitive permanent-magnet steel soft iron drives containing the linkage interface with bimetal leaf boosting parts, described bimetal leaf boosting parts the temperature-sensitive permanent-magnet steel from the loss of excitation state to the temperature-fall period that has magnetic state to change, produce deformation and help to promote temperature-sensitive permanent-magnet steel soft iron and drive adhesive.
4 according to claim 1 or 3 described heat collecting elements, it is characterized in that cover glass tube tail end inner surface low thermal resistance connects a heat radiation paster.
5 according to claim 1 or 3 described heat collecting elements, it is characterized in that the cover glass tube tail end is inboard to be connected by a high thermal resistance of jump ring with the inner glass tube tail end.
6 according to claim 1 or 3 described heat collecting elements, it is characterized in that described heat collecting element tail end is for being no more than the part of heat collecting element total length 6% forward from heat collecting element tail end bottom outer surface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202057753U CN203274318U (en) | 2013-04-22 | 2013-04-22 | Pressure reducing stagnation protection inserting type heat pipe vacuum heat collecting element |
Applications Claiming Priority (1)
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| CN2013202057753U CN203274318U (en) | 2013-04-22 | 2013-04-22 | Pressure reducing stagnation protection inserting type heat pipe vacuum heat collecting element |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103225903A (en) * | 2013-04-22 | 2013-07-31 | 海宁伊满阁太阳能科技有限公司 | Pressure reducing air sunning protecting insertion type heat pipe vacuum heat collection component |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225903A (en) * | 2013-04-22 | 2013-07-31 | 海宁伊满阁太阳能科技有限公司 | Pressure reducing air sunning protecting insertion type heat pipe vacuum heat collection component |
| CN103225903B (en) * | 2013-04-22 | 2015-01-21 | 周文君 | Pressure reducing air sunning protecting insertion type heat pipe vacuum heat collection component |
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Granted publication date: 20131106 Termination date: 20140422 |