CN202101428U - Double-phase flow heat exchange solar heat collecting device in vacuum heat collecting pipe - Google Patents

Abstract

A double-phase flow heat exchange solar heat collecting device in a vacuum heat collecting pipe is formed by vacuum heat collecting pipes and united collecting devices. The utility model is characterized in that the horizontal error of the two ends of each vacuum heat collecting pipe is smaller than plus or minus 35 mm; water and steam are constantly kept in the heat collecting pipes through regulating the state of the united collecting pipes and arranging objects on the united collecting devices or at the openings of the heat collecting pipes for blocking water and steam; and the objects for blocking the water and the steam comprises connection pipes, gasket rings and steam blocking rings. The utility model has the benefits of achieving two phase coexistence and two phase flow heat exchange circulation, strong two phase flow heat exchange circulation heat transmission, good constant temperature property, few links of heat exchange, small heat sink, convenience in regulating output temperature, high reliability, freeze resistance, and high cost performance. The utility model widens the usages of the vacuum heat collecting pipes and the heat collecting device comprising the same, including that seawater is directly led into the heat collecting pipes to be distilled, and the generated steam can be used to achieve multi-effective distillation. Referring to attached drawings, three embodiments are provided.

Description

Two phase flow heat transfer solar collector in the vacuum heat collection pipe

Technical field

The utility model relates to two phase flow heat transfer solar collector in the vacuum heat collection pipe.

Background technology

Existing vacuum heat collection pipe heat-collecting temperature is high, heat waste is little, industrialization level is high, with the cannula type solar water heater of its manufacturing domestic hot-water more than 50 ℃ can be provided in the winter time.But generally speaking, the application product of vacuum heat collection pipe is abundant not enough flourishing.

Summary of the invention

The purpose of the utility model is that two phase flow heat transfer solar collector in the vacuum heat collection pipe will be provided.

The utility model solves the technical scheme that its technical problem is taked: with vacuum heat collection pipe and the coupling device spare that is connected with thermal-collecting tube, form the solar collector of the interior two phase flow heat transfer of a vacuum heat collection pipe.Coupling device spare comprises the couplet collection box that is connected with the insertion of thermal-collecting tube cover glass tube, refutes female pipe of couplet collection and the hot water storage tank that pipe is connected with thermal-collecting tube inner glass tube or cover glass tube through its connection.Vacuum heat collection pipe comprises the vacuum heat collection pipe of all-glass vacuum thermal-collecting tube, inner glass tube band finned sheet absorbing body.The horizontal error that makes the thermal-collecting tube two ends is less than positive and negative 35 millimeters.In most of the cases, the layout of thermal-collecting tube is good more near level more.Take over or the state of thermal-collecting tube, in coupling device spare or at the thermal-collecting tube mouth of pipe, be provided with and have water to retain when the dash object makes the thermal-collecting tube water outlet, have gas to retain above when thermal-collecting tube mouth of pipe top is provided with retaining gas object and makes the thermal-collecting tube water inlet through refuting of adjustment coupling device spare.Said dash object and retaining gas object comprise and the retaining air water circle of refuting pipe and sealing ring being connected of being tightly connected of thermal-collecting tube inner glass tube, being connected with thermal-collecting tube inner glass tube inner seal.Water in the thermal-collecting tube can be emitted but can not have been put, and can put into but can not all occupy the thermal-collecting tube inner space.Pipe is refuted in coupling device spare configuration moisturizing, pipe, turnover water barge pipe, excessive tracheae or closed airbag and pressure release device are refuted in draining.Thermal-collecting tube can contain the capillary imbibition material of fitting with its internal chamber wall, the glass cross that for example is rolled into tubular and props up with elastic component.Can also adopt the Control System of Microcomputer that disposes magnetic valve, water-temperature water-level sensor or flowmeter, make micro-processor controlled two phase flow heat transfer solar collector.

Can also be at tubular exchanger of the inner embedding of coupling device spare; Perhaps each thermal-collecting tube inside embeds branch's heat exchanger in coupling device spare, and said branch heat exchanger is interconnected to form the water route, and the water in the thermal-collecting tube constantly flashes to steam in tubular exchanger or branch's heat exchanger surface condensation; Perhaps coupling device spare is connected with a steam pipe that stretches to the external world, and the water in the thermal-collecting tube constantly flashes to steam through steam pipe output.

Can also adopt the one dimension beam condensing unit, said one dimension beam condensing unit comprises reflecting condensation device and lens light gathering device; The one dimension beam condensing unit is connected with thermal-collecting tube optically focused, and promptly the absorbing film of thermal-collecting tube is in the optically focused zone of one dimension beam condensing unit.

Can also make coupling device spare axle center tape level inclination install; The step dam is set in coupling device spare; Each step of step dam is communicated with one or a pair of thermal-collecting tube that is in same horizontal level, and the dash water level of step dam is higher than 0 to 30 millimeter of the retention water level that belongs to thermal-collecting tube.

Can also adopt a hot water storage tank heating load, hot water storage tank is connected with the tubulose two phase flow heat transfer device cold junction low thermal resistance of a sealing; The position of cold junction is higher than coupling device spare and is communicated with through a steam pipe with coupling device spare is inner, and the condensed water in the cold junction can reflux and get into coupling device spare inside; A breather pipe that perhaps is communicated with a balloon type closed airbag with a negative pressure source is contained at the top of cold junction.

Can also make coupling device spare inside be communicated with an external heat exchanger spare through a steam pipe; The bottom of said heat exchange device is connected with the water inlet of a water pump, and the delivery port of water pump is refuted pipe with the moisturizing of coupling device spare and is connected.

Can also make coupling device spare contain controlled many water levels of step dam or many water levels dash object, but the overflow interface is all contained and water control valve more than in the bottom of each dam facing bottom of many water levels dam and many water levels dash object; But the water position status of thermal-collecting tube changes with the change of these water control valve states.

Can also adopt a hydraulic vacuum-pumping device, but be serially connected with a control valve between the vacuum suction mouth of said hydraulic vacuum-pumping device and the coupling device spare inside; But perhaps be serially connected with a control valve and a negative-pressure container.The glass apparatus shop has a kind of hydraulic vacuum-pumping device to sell, and it utilizes the effect of the entrainmenting formation negative pressure of moving fluid to vacuumize.

The beneficial effect of the utility model: make the thermal-collecting tube horizontal arrangement and in thermal-collecting tube, realize the carbonated drink two-phase coexistent; Can give full play to the little advantage of vacuum heat collection pipe heat waste; Make the interior temperature of thermal-collecting tube reach 70 to 100 ℃, and utilize the steam partial pressure of this temperature range to realize two phase flow heat transfer circulation efficiently.Two phase flow heat transfer has good heat transfer ability, isothermal and heat flow density ability to transform.Through using measures such as keeping off the air water circle,, can prevent empty the solarization and the cold water bombing of advancing by leaps and bounds at the inner water of retaining of thermal-collecting tube.Adopt tubule footpath thermal-collecting tube horizontal arrangement also to have the capillary materials imbibition apart from short advantage.On this basis; Flow out after making water flow into the thermal-collecting tube heat exchange; The horizontal thermal-collecting tube heat collector that has overcome pipe internal memory full water relies on that water length in the thermal-collecting tube is high apart from heat transfer resistance, the defective of carrying load ability difference, and have that the heat exchange link is few, easily manufactured, in the pipe setting-out few heat big, output temperature is selected conveniently, the temporary transient stored hot water of thermal-collecting tube capable of using and the advantage easily of fetching water.Make band split indoor water tank the split type solar water heater of through type family expenses can so as not to circulating pump, go out also morning hot water time.

The two phase flow steam heat collection apparatus of the utility model is simple in structure, heat exchange link no-movable part, energy-conservation, reliability is high, freeze proof, be fit to fabricator and use the integral type solar water heater.When making the wall hanging solar energy water heater, can also connect heat collector and water tank with flexible pipe, easy for installation, saving.Adopt the one dimension beam condensing unit to be connected the optically focused two phase flow steam heat collection apparatus made from thermal-collecting tube optically focused; Can export 100 ℃ with the enough big steam of upward pressure, can reduce the ratio of on-condensible gas in the two phase flow heat transfer space significantly, improve thermal-arrest and heat transfer efficiency greatly, can further expand the purposes of vacuum heat collection pipe and heat collector thereof.The condensing evacuated heat collector of one dimension of low multiple, tracking in manual month once also can be satisfied required precision.Also can use the reflecting condensation plate of exempting to follow the tracks of.

The step dam is set in coupling device spare, is used in coupling device spare axle center carrying out when the tape level inclination is installed moisturizing.High latitude utilized sun the subject of knowledge and the object of knowledge necessary during the inclination angle was installed as.Adopt many water levels dam, can distill thermal-collecting tube input seawater with high water level earlier, switch to low water level more in good time and remove concentrated seawater.Thermal-collecting tube capable of using like this institute producing steam is realized multi-effect distilling, and the product price ratio is significantly improved.It also can be used for, and sewage to various difficult degradations comprises electroplating wastewater, contains antibiotic waste water, black liquid carries out distil(l), the capable of using or otherwise processed of distilled and concentrated solution.

The heat exchange device is set in coupling device spare, to load heat exchange device heats, can realizes and the isolation of load, make things convenient for the heat collector bearing operation with steam in the thermal-collecting tube.Two phase flow pressure-bearing heat collector excellent performance aspect solar heating.With the cannula type heat collecting module ratio of water in the pipe, cost is suitable, but carrying load ability is superpower; Winter, but high efficiency provided heat energy more than 45 ℃, and reliability is high, good frost resistance; Especially going out the hot water time can shift to an earlier date nearly 3 hours; It gets heat and can be enhanced about more than once, and makes the occasion fine days such as office kindergarten that only need the heating on daytime not need the supplementary energy heating, and the bulking property price ratio can improve 1 to 3 times.With the heat collecting module ratio that adopts heat pipe or metal flow passage, that two phase flow pressure-bearing heat collector cost reduces is half the, save precious metal, flow passage resistance force of waterproof reduces that 70% operating cost is low, reliability and collecting efficiency are higher, and the bulking property price ratio can improve 1 to 2 times.Make coupling device spare inside be communicated with, can reduce on-condensible gas dividing potential drop raising two phase flow heat transfer efficient in the thermal-collecting tube with a negative pressure source.Adopt closed airbag when preventing water evaporates, to reduce the on-condensible gas dividing potential drop, help to improve two phase flow heat transfer efficient.Adopt the capillary imbibition material, can guarantee that the inner glass tube inwall is not dry, help to improve collecting efficiency.Adopt robot control system(RCS) can realize the function of various complicacies, increase substantially the performance of heat collector, and can with the production technology seamless connection.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Fig. 1 is a two phase flow heat transfer sun heat and heat water supplying heat collector structural representation in the vacuum heat collection pipe.

Fig. 2 is that the female pipe of the couplet collection cross section of Fig. 1 heat collector is analysed and observe.

Fig. 3 is a two phase flow heat transfer solar collector structural representation in the straight-through vacuum heat collecting tube.

Fig. 4 is a two phase flow heat transfer solar energy producing steam apparatus structure sketch map.

Fig. 5 is that the couplet collection box cross section of Fig. 4 solar energy producing steam device is analysed and observe.

The female pipe of 1. collection among the figure; 2. refute pipe; 3. thermal-collecting tube; 4. inner glass tube; 5. sealing ring; 6. case; 7. pipe is refuted in draining; 8. water tank; 9. cold junction; 10. pipe is refuted in moisturizing; 11. water source; 12. relief valve; 13. negative pressure is refuted pipe; 14. negative pressure source; 15. air bag; 16. dam; 17. port; 18. heat exchanger tube; 19. sensor; 20. join the collection box; 21. retaining air water circle; 22. turnover water barge pipe; The tracheae 23. overflow; 24. upper hose; 25. display screen; 26,27. groups of valves; 28,29. link rods; 30. overfall; 31. jet chimney; 32. control valve; 33,34. distillers; 35. preheating device.

The specific embodiment

Fig. 1 and Fig. 2 provide first embodiment of the utility model jointly.Among Fig. 1 and Fig. 2, join the tubaeform connection of the female pipe of collection 1 both sides welding two rows and refute pipe 2, refute pipe 2 ports and contain flange, be connected with sealing ring 5 between the flange of refuting pipe 2 and thermal-collecting tube 3 inner glass tubes 4, form the heat collector of the interior two phase flow heat transfer of a vacuum heat collection pipe.Join the female pipe 1 of collection and have case 6, filling heat-insulating material in the case 6.Joining the female pipe of collection 1 one terminations has draining to refute pipe 7; The other end stretches out, and is communicated with two phase flow heat transfer coil pipe cold junctions 9 in the hot water storage tank 8, and refutes pipe 10 through moisturizing and be communicated with extraneous water source 11 and relief valve 12.Cold junction 9 tops are refuted pipe 13 through negative pressure and are communicated with negative pressure source 14 and balloon type closed airbag 15.Join the female pipe of collection 1 inside and be shaped on step dam 16, and contain the pressure-bearing cycle heat exchange pipe 18 of a band connectivity port 17.Roughly the position with inner glass tube 4 black absorption films overlaps, and inner glass tube 4 internal chamber walls are fitted with the capillary imbibition material.Clear for the drawing brief introduction, the sealing ring that do not draw between pipe 2 and the thermal-collecting tube 3 is refuted in the connection on Fig. 2 the right.

Fig. 1 and Fig. 2 embodiment operation principle: water makes it receive thermal evaporation in the sunlight heating thermal-collecting tube 3, and steam gets under differential pressure action and joins the female pipe 1 of collection.When having water, heat exchanger tube 18 flows through its surface temperature when low; The water of steam in heat exchanger tube 18 surperficial heat release condensation heating heat exchanger tubes 18; Condensed water returns in the thermal-collecting tube 3 through joining the female pipe of collection 1 bottom, and upwards rises to whole inner glass tube 4 internal chamber walls through the capillary imbibition material.When heat exchanger tube 18 water routes shutoff surface temperature was high, steam got into the cold junction 9 in the hot water storage tank 8 under differential pressure action.When water tank 8 has water and cold junction 9 surface temperatures low, the water in the cold junction 9 internal water steam heat release condensation heating water tank 8, condensation flow is returned in the thermal-collecting tube 3 and through the capillary imbibition material and is upwards risen to whole inner glass tube 4 internal chamber walls through joining the female pipe of collection 1 bottom.During this, thermal-collecting tube 3 and the air that joins the female pipe of collection 1 interior section expanded by heating are refuted pipe 13 through negative pressure and are got into the air bag 15 in the air bag box above the water tank 8, and later air themperature reduces when shrinking, and the air in the air bag 15 returns and joins in the female pipe 1 of collection.

When heat exchanger tube 18 and coil pipe cold junction 9 are that high-temperature heat-gathering device is empty to be shone,, refute relief valve 12 that pipe 10 is communicated with moisturizing and open and carry out exhaust pressure relief along with the increase of internal water steam pressure.After empty the solarization, the operating mode of understanding in the heat collectors through the water-temperature water-level sensor 19 that is electrically connected with the Control System of Microcomputer main frame, and on the Control System of Microcomputer display screen, show.Can refute pipe 10 manual moisturizing or automatic water supplements through moisturizing.

Join the female pipe of collection 1 horizontal arrangement among Fig. 1, moisturizing is without step dam 16.But most of situation joins collection mother pipe 1 for being in tilted layout, i.e. the end that pipe 10 places are refuted in moisturizing upwards lifts.The moisturizing process is when joining the female pipe 1 of collection and tilting: refute pipe 10 with moisturizing and 11 connect into pure water from the water source.Because the stopping of step dam 16, have only the water of excessive step dam 16 just can reach in the adjacent next stage thermal-collecting tube 3.Therefore, the moisturizing successively from top to bottom of each thermal-collecting tube 3 is filled water until all thermal-collecting tubes 3.If there is unnecessary water to accumulate in inside and outside the nethermost thermal-collecting tube 3, can refutes pipe 7 through draining and discharge.

Fig. 1 and Fig. 2 embodiment can be used for solar heating and heat supply water.Heating season can be with the water emptying in the water tank 8.

Fig. 3 provides second embodiment of the utility model.Among Fig. 3, join in the collection box 20 both sides jacks and insert thermal-collecting tube 3, fill in retaining air water circle 21 in the thermal-collecting tube 3, form the heat collector of two phase flow heat transfer in the vacuum heat collection pipe.Join collection box 20 and have case 6 and heat-insulating material, a water-temperature water-level sensor 19 that is electrically connected with the Control System of Microcomputer main frame is also contained in inside.Join collection box 20 and be in tilted layout, low side has a turnover water barge pipe 22; High-endly have an excessive tracheae 23.

The operation principle of Fig. 3 embodiment can be sketched and be: Control System of Microcomputer is according to the startup self-detection when the The sun came up of the program of inner perpetual calendar and setting.Situation is normally through upper hose 24 water inlets.Because of thermal-collecting tube 3 keeps flat and adopts retaining air water circle 21, thermal-collecting tube 3 top two-phase coexistents.Water in the sunlight heating thermal-collecting tube 3, water temperature reaches setting, and Control System of Microcomputer is sent hot water into hot water storage tank 8 through turnover water barge pipe 22.According to circumstances go up water then once more or stop thermal-arrest.The state of heat collector shows through the display screen 25 that is electrically connected with the Control System of Microcomputer main frame.Thermal-collecting tube 3 bottoms are retained water all the time, and going up water fast once more then can bombing.Incrustation scale when a small amount of water freezes in the inner glass tube 4 can drop in fragmentation.

Fig. 3 embodiment is used for the transformation of existing cannula type hot-water heating system, needs configuration computer control device, magnetic valve and water-temperature water-level sensor.Also to retaining air water circle set level and in thermal-collecting tube, be provided with to thermal-collecting tube, arrange waterway pipe again.

Fig. 4 and Fig. 5 provide the 3rd embodiment of the utility model jointly.Among Fig. 4 and Fig. 5, join the female pipe of collection 1 both sides and refute that the employing sealing ring is connected between the vacuum heat collection pipe 3 of pipe 2 and inner glass tube band finned sheet absorbing body, form a two phase flow heat transfer solar energy producing steam device.The necking down and melt envelope of 25 millimeters of inner glass tube 4 diameters of thermal-collecting tube 3, its cover glass tube with inner glass tube 4 in the port.Inner glass tube 4 coated metals conduct heat, and can exempt to use the capillary imbibition material, directly conduct heat to following water position from the top that is heated, and avoid the problem of capillary imbibition material fouling.The thermal-collecting tube internal diameter design freedom of inner glass tube band wing plate is big.Thermal-collecting tube 3 horizontal arrangement have the one dimension reflecting and condensing device; Join the female pipe 1 of collection and have case and heat-insulating material, its axle center tape level inclination is followed the tracks of sun altitude to guarantee beam condensing unit.For for purpose of brevity, beam condensing unit does not draw among the figure.Adopt the high hyte valve 26 of electronic group of valve and low hyte valve 27 of two multi-valve linkages.Each valve of electronic group of valve 26,27 is installed in respectively on each many water levels step dam 16, and respectively can synchronous opening/closing through link rod 28,29 connections that are connected with magnetic valve driving mechanism.Said magnetic valve driving mechanism and Control System of Microcomputer are electrically connected.Dam 16 has overfall 30.The water-temperature water-level sensor 19 that joins in the female pipe 1 of collection is electrically connected with the Control System of Microcomputer main frame.

To go up earlier water before Fig. 4 and Fig. 5 embodiment work.During last water, Control System of Microcomputer is closed low hyte valve 27, is opened high hyte valve 26 through electric driving mechanism, opens and can turn-off excessive tracheae, and the female pipe of collection 1 is high-end to insert former water through pipeline valve from joining.The water level that joins in the female pipe 1 interior step of many water levels of the one-level topmost dam 16 of collection rises gradually; Can flow into the space that next stage dam 16 impales when water levels reach the height of its high hyte valve of opening 26 in the dam 16 and in the thermal-collecting tube 3 that is communicated with it, go up water so from top to bottom step by step.Reach when setting low water level when the level sensor 19 that is installed in final stage dam 16 places detects its place space water inlet, turn-off high hyte valve 26.At this moment, topmost the water level of one-level dam 16 the insides raises until the overfall 30 that covers place dam 16 gradually, flows into the space that next stage dam 16 impales and in the thermal-collecting tube 3 that is communicated with it, so from top to bottom raising of water level step by step.Reach when setting high water level when level sensor 19 detects into water, turn-off water inlet, last water process end.

Among Fig. 4 and Fig. 5 embodiment, need not high hyte valve 26 and also can realize normally going up water from top to bottom.But adopt high hyte valve 26 can make thermal-collecting tubes 3 at different levels water inlet ahead of time, promptly realize the synchronous water of going up of each thermal-collecting tube 3, avoid thermal-collecting tube 3 waits for too long operating mode deterioration under the light and heat collection state of back.Adopt high hyte valve 26 can also make 3 of thermal-collecting tubes at different levels go up water to set than low water level, make the last water scheme of producing steam device that many a kind of selections arranged.

The vacuum heat collection pipe of configuration beam condensing unit, even intensity of solar radiation has only under 500 watts of/square metre conditions in the winter time, also can be stably with 2 atmospheric steam of salt water generates of salt content 19%.Be serially connected with jet chimney 31 and the control valve 32 that Control System of Microcomputer is electrically connected through control, can regulate the steam output pressure of solar energy producing steam device.Solar energy distillation device can adopt multi-mode working: adopt economic benefits and social benefits or single effect distillation pattern when the sun is weak; Adopt triple effect distillation pattern when the sun is strong.Triple effect distillation pattern can be such: sunshine makes the water in the thermal-collecting tube 3 receive thermal evaporation.The steam that in thermal-collecting tube 3, produces passes through jet chimney 31 entering second level distillers 33 under differential pressure action.About 100 ℃ of steam that second level distiller 33 produces get into third level distiller 34.Third level distiller 34 adopts low-pressure distillation, and about 75 to the 85 ℃ of steam that produced get into the former water pre-heater apparatus 35 interior former water of preheating and make other purposes.Former water adopts vavuum pump vacuum degassing in preheating.

Control System of Microcomputer is extrapolated the enrichment of thermal-collecting tube 3 maritime interior waters and the storage of thermal-collecting tube 3 interior concentrates, and is carried out going up once more water in good time according to the output of solar energy producing steam device distilled water.To night, open low hyte valve 27 concentrate in the thermal-collecting tube 3 is accepted.

Thermal-collecting tube 3 openends of Fig. 4 and Fig. 5 embodiment are unobstructed, add 1 cooling at night in winter of first line of a couplet collection mother pipe and are slower than thermal-collecting tube 3, can obtain the effects that order is freezed in the thermal-collecting tube 3, make icing thermal-collecting tube 3 is influenced be reduced to minimum level.

Claims (8)

1. two phase flow heat transfer solar collector in the vacuum heat collection pipe; Form by vacuum heat collection pipe with the coupling device spare that thermal-collecting tube is connected, coupling device spare comprises with the thermal-collecting tube cover glass tube and inserts the couplet collection box is connected, refutes the couplet collection mother that pipe is connected with thermal-collecting tube inner glass tube or cover glass tube through its connection and manage and hot water storage tank; Vacuum heat collection pipe comprises the vacuum heat collection pipe of all-glass vacuum thermal-collecting tube, inner glass tube band finned sheet absorbing body; Pipe is refuted in coupling device spare configuration moisturizing, pipe, turnover water barge pipe, excessive tracheae or closed airbag and pressure release device are refuted in draining; Thermal-collecting tube can contain the capillary imbibition material of fitting with its internal chamber wall; Can also adopt the Control System of Microcomputer that disposes magnetic valve, water-temperature water-level sensor or flowmeter, make micro-processor controlled two phase flow heat transfer solar collector, the horizontal error that it is characterized in that the thermal-collecting tube two ends is less than positive and negative 35 millimeters; Take over or the state of thermal-collecting tube, in coupling device spare or at the thermal-collecting tube mouth of pipe, be provided with and have water to retain when the dash object makes the thermal-collecting tube water outlet, have gas to retain above when thermal-collecting tube mouth of pipe top is provided with retaining gas object and makes the thermal-collecting tube water inlet through refuting of adjustment coupling device spare; Said dash object and retaining gas object comprise and the retaining air water circle of refuting pipe and sealing ring being connected of being tightly connected of thermal-collecting tube inner glass tube, being connected with thermal-collecting tube inner glass tube inner seal.

2. according to the described heat collector of claim 1, it is characterized in that tubular exchanger of the inner embedding of coupling device spare; Perhaps each thermal-collecting tube inside embeds branch's heat exchanger in coupling device spare, and said branch heat exchanger is interconnected to form the water route, and the water in the thermal-collecting tube constantly flashes to steam in tubular exchanger or branch's heat exchanger surface condensation; Perhaps coupling device spare is connected with a steam pipe that stretches to the external world, and the water in the thermal-collecting tube constantly flashes to steam through steam pipe output.

3. according to claim 1 or 2 described heat collectors, it is characterized in that containing the one dimension beam condensing unit, said one dimension beam condensing unit comprises reflecting condensation device and lens light gathering device; The one dimension beam condensing unit is connected with thermal-collecting tube optically focused, and promptly the absorbing film of thermal-collecting tube is in the optically focused zone of one dimension beam condensing unit.

4. according to claim 1 or 2 described heat collectors, it is characterized in that the tape level inclination installation of coupling device spare axle center; Coupling device spare contains the step dam, and each step of step dam is communicated with one or a pair of thermal-collecting tube that is in same horizontal level, and the dash water level of step dam is higher than 0 to 30 millimeter of the retention water level that belongs to thermal-collecting tube.

5. according to claim 1 or 2 described heat collectors, it is characterized in that containing a hot water storage tank heating load, hot water storage tank is connected with the tubulose two phase flow heat transfer device cold junction low thermal resistance of a sealing; The position of cold junction is higher than coupling device spare and is communicated with through a steam pipe with coupling device spare is inner, and the condensed water in the cold junction can reflux and get into coupling device spare inside; A breather pipe that perhaps is communicated with a balloon type closed airbag with a negative pressure source is contained at the top of cold junction.

6. according to claim 1 or 2 described heat collectors, it is characterized in that coupling device spare inside is communicated with an external heat exchanger spare through a steam pipe; The bottom of said heat exchange device is connected with the water inlet of a water pump, and the delivery port of water pump is refuted pipe with the moisturizing of coupling device spare and is connected.

7. according to claim 1 or 2 described heat collectors; It is characterized in that coupling device spare contains controlled many water levels of step dam or many water levels dash object, but the overflow interface is all contained and water control valve more than in the bottom of each dam facing bottom of many water levels dam and many water levels dash object; But the water position status of thermal-collecting tube changes with the change of these water control valve states.

8. according to claim 1 or 2 described heat collectors, it is characterized in that containing a hydraulic vacuum-pumping device, but be serially connected with a control valve between the vacuum suction mouth of said hydraulic vacuum-pumping device and the coupling device spare inside; But perhaps be serially connected with a control valve and a negative-pressure container.

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