CN104896765A - Drain back anti-freezing flat plate type solar thermal collector - Google Patents
Drain back anti-freezing flat plate type solar thermal collector Download PDFInfo
- Publication number
- CN104896765A CN104896765A CN201510242033.1A CN201510242033A CN104896765A CN 104896765 A CN104896765 A CN 104896765A CN 201510242033 A CN201510242033 A CN 201510242033A CN 104896765 A CN104896765 A CN 104896765A
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- collector
- reinforcement
- backflow
- solar heat
- type flat
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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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- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Abstract
The invention relates to a drain back anti-freezing flat plate type solar thermal collector and belongs to the technical field of solar heat utilization. The drain back anti-freezing flat plate type solar thermal collector is characterized by comprising collecting pipes and discharging pipes; the collecting pipes and the discharging pipes are provided with gradients in the horizontal direction; and the collecting pipes and the discharging pipes are communicated with each other. A system composed of the thermal collector and connecting pipes can be down back effectively, and the use safety of the system can be guaranteed during the freezing seasons.
Description
Technical field
The invention belongs to solar energy utilization technique field, be specifically related to a kind of backflow antifreezing type flat-plate solar heat collector.
Background technology
In prior art, the application of tube-sheet type flat-plate solar heat collector also exists very large technical barrier, and namely when icing time, the water be full of in flow-path tube can because freeze and volume increase, thus cause the squeezed bulging deformation of flow-path tube or spalling to destroy.Above-described technical barrier can cause tube-sheet type flat-plate solar heat collector, only be adapted at non-icing area or non-use ice period in the area that freezes, and need to take antifreeze technical scheme in ice period, according to inventor's research and development technology experience for many years, learn there is following freezing proof technique scheme at present.
A kind of freezing proof technique scheme is wherein: the double loop solar water heating system of filling anti-icing fluid in heat collector.Namely heat collector and its connecting line form the first closed circuit, and heat storage water tank and water inlet pipe and water outlet pipe form second servo loop, first loop by the heat exchanger (board-like or coil pipe) on its loop by its delivered heat to the water in second servo loop, fill the anti-icing fluid added in first loop can not freeze in ice period, thus avoid the adverse consequences that flat plate collector is damaged by frost, flat plate collector also can be applied in icing area.
But double loop solar water heating system, because anti-icing fluid must be annotated in the first loop, and we are it is desirable that hot water, so also will heat exchanger be arranged, and corresponding circulating pump and by-pass valve control, investment will be strengthened like this, add up in industry, adopt the investment of this two circuit solar water heating system generally will improve 20 ~ 30%, and the later stage because of anti-icing fluid consumption or leak also can bring the abnormal of operation, inspection and maintenance extremely bothers, more troublesomely be, after this two circuit solar water heating system uses 3-6, anti-icing fluid go bad aging after need to be changed, this is also a no small trouble.
In view of the defect of above double loop solar water heating system, also have such technical scheme in prior art, in ice period by emptying for the water in flat plate collector, this practice has two kinds of forms, a kind of is all discharged by the water of whole system, is called emptying (down back); Another kind of then be the water in flat plate collector and front and back connecting line thereof is drained back among frozen water tank (special reflux tank), backflow (drain back) to be called.The defect that once investment is large and maintenance cost is high that rear a kind of technical scheme is brought because decreasing double loop solar water heating system, so also applied to a great extent and promoted.
But in popularization, often bring very large difficulty to the installation of return-flow system because of the inadaptable of ordinary flat collector structure, even cause the failure that return-flow system is implemented.
As shown in Figure 1, for a kind of flat plate collector system of the prior art, its collector is horizontally disposed with, comb opposite header is vertically arranged, and form the heat collector collector of whole system and mutually contact and connect, this pipeline is also laterally level, but this can cause the fluid in this runner pipeline to be difficult to be emptied completely, thus can not guarantee antifreeze effect.
And as shown in Figure 2, entire system shown in Fig. 1 is tilted, then can bring very large difficulty to installation, furthermore, the connection of collector is then difficult to be controlled accurately point-blank, careless slightly, there is local high spot and recessed in junction, the hydrops that can not reflux will be produced, cause icing bursting by freezing, cause whole system to be paralysed.
As the improvement of Fig. 2, as shown in Figure 3, for one upper and lower diagonal angle outlet flat plate collector, it can form system as shown in Figure 4, this flat plate collector system connected up and down, and its collector does not need laterally mutually to contact connection, thus eliminate that to be laterally interconnected the local that may occur concavo-convex, considerably improve backflow, but the scheme that be arranged in parallel of upper lower collector pipe, be still difficult to the risk eliminating hydrops.
In view of the defect of above technical scheme, a kind of architecture, be easy to safeguard and the heat collector of good freezing protection effect and its composition system urgently occur.
Summary of the invention
In order to solve the technological deficiency that the above prior art exists, the invention provides a kind of backflow antifreezing type flat-plate solar heat collector, its general principle is the structure (flow-path tube of the present invention comprises collector, comb, elbow and connecting line) of the flow-path tube changing prior art middle plateform heat collector, it is made to be obliquely installed (namely adjusting being horizontally placed in flow-path tube to be obliquely installed), thus make system install more convenient, backflow is more smooth and easy, to reach the antifreeze technique effect of backflow.
The technical solution adopted in the present invention is, a kind of backflow antifreezing type flat-plate solar heat collector, and comprise frame, also comprise collector and comb, described collector or described comb laterally have the gradient; Described collector and described comb interconnect.
Further, described collector is longitudinally vertical, and comb laterally has the gradient.
Further, described comb is longitudinally vertical, and collector laterally has the gradient.
Further, described collector is longitudinally vertical, comb is acclive backflow antifreezing type flat-plate solar heat collector laterally, described collector has four ports, be provided with inner block cap in the port of the lower right position of described collector, the diapire of the end of first comb that the top of described inner block cap is adjacent is concordant; The port of the lower right position of described collector is arranged in frame, and its excess-three port of described collector passes described frame.
The setting of inner block cap makes in evacuation and anti-freezing process, and the water-holding quantity in flow-path tube reduces greatly, and the antifreezing effect brought is better.
Further, described collector is longitudinally vertical, and comb is acclive backflow antifreezing type flat-plate solar heat collector laterally, and described scuncheon is inserted with reinforcement plate, described reinforcement plate is provided with the wide muscle of reinforcement and the wide muscle of lower reinforcement; Be provided with one end of inner block cap in described collector, be also provided with collector holder, described collector holder is used for fixing described collector; The bottom surface of described collector holder is provided with groove; Described collector holder is plugged between the wide muscle of described upper reinforcement of described reinforcement plate and the wide muscle of described lower reinforcement, and bottom surface and the wide muscle of described lower reinforcement of described collector holder are riveted mutually.
Further, described collector is longitudinally vertical, in the horizontal acclive backflow antifreezing type flat-plate solar heat collector of comb, be provided with mat insulation between described collector holder and the described collector being provided with inner block cap one end, described mat insulation is fixed on described collector holder by buckle pressing plate.
Described mat insulation is for preventing the heat transfer between described collector and described collector holder, and described buckle pressing plate compresses described mat insulation towards the direction of described collector, reaches fixing technique effect.
Further, described collector is longitudinally vertical, comb is acclive backflow antifreezing type flat-plate solar heat collector laterally, and be provided with mat insulation between described collector holder and the described collector being provided with inner block cap one end, described mat insulation is fixed on described collector holder by buckle pressing plate.
Further, described comb is longitudinally vertical, and collector is acclive backflow antifreezing type flat-plate solar heat collector laterally, and the port of the described collector of its upper left position neutralizes in the port of the described collector of its lower right position and is equipped with inner block cap; The sidewall of the comb end adjacent with described inner block cap has dredging flow groove.
Described dredging flow groove is used for the water of emptying described collector and described comb junction.
Further, described comb is longitudinally vertical, and collector is acclive backflow antifreezing type flat-plate solar heat collector laterally, and described scuncheon is inserted with reinforcement plate, described reinforcement plate is provided with the wide muscle of reinforcement and the wide muscle of lower reinforcement; Described collector is provided with one end of inner block cap, is provided with collector holder, and described collector holder is used for fixing described collector; The bottom surface of described collector holder is provided with groove; Described collector holder is plugged between the wide muscle of described upper reinforcement of described reinforcement plate and the wide muscle of described lower reinforcement, and bottom surface and the wide muscle of described lower reinforcement of described collector holder are riveted mutually.
Further, described comb is longitudinally vertical, and collector is acclive backflow antifreezing type flat-plate solar heat collector laterally, and the port in the described collector lower left corner, the port in the described collector upper right corner are all welded with elbow, described elbow is set with sealing ring, and described sealing ring is inlaid on frame.
Compared with prior art, beneficial effect of the present invention is:
1) system of backflow antifreezing type flat-plate solar heat collector composition of the present invention, when requiring system to reflux, its installation becomes simple and direct.
2) system of backflow antifreezing type flat-plate solar heat collector of the present invention composition, its flat plate collector and front and back connecting line easily emptying, reflux very smooth and easy.
3) appearance of backflow antifreezing type flat-plate solar heat collector of the present invention, made the freeze proof system of backflow can reliably large-scale popularization, thus the system making it form is not because re-using double loop, and at least do not need to use heat exchanger, circulating pump, by-pass valve control and anti-icing fluid, make once to invest and reduce 20-30%, also make later stage operation and maintenance cost reduce, more avoid trouble and spending that 3-5 changes anti-icing fluid afterwards.
Accompanying drawing explanation
Fig. 1 is flat plate collector system diagram of the prior art;
Fig. 2 is the system diagram tilting to install by system shown in Figure 1;
Fig. 3 is the flat plate collector of a kind of upper and lower diagonal angle outlet in prior art;
Fig. 4 is the system diagram of heat collector composition as shown in Figure 3;
Fig. 5 is that collector of the present invention is longitudinally vertical, the schematic diagram of the horizontal acclive flat plate collector of comb;
Fig. 6 is the enlarged diagram at A place in Fig. 5;
Fig. 7 is the schematic diagram that collector holder is arranged in the present invention;
Fig. 8 is the schematic diagram that sealing ring is arranged in the present invention;
Fig. 9 is the system diagram of flat plate collector composition as shown in Figure 5;
Figure 10 is that comb of the present invention is longitudinally vertical, the schematic diagram of the horizontal acclive flat plate collector of collector;
Figure 11 is the enlarged diagram at B place in Figure 10;
Figure 12 is the enlarged diagram at C place in Figure 10;
Figure 13 is the system diagram of flat plate collector composition as shown in Figure 10.
In figure: 1-collector; 2-comb; 3-inner block cap, the top of 31-inner block cap; 4-collector holder, 41-groove; 5-strengthens plate, and the wide muscle of the upper reinforcement of 51-, strengthens wide muscle under 52-; 6-mat insulation; 7-buckle pressing plate; 8-frame; 9-dredging flow groove; 10-elbow; 11-sealing ring.
Detailed description of the invention
A kind of backflow antifreezing type flat-plate solar heat collector, comprise collector 1 and comb 2, described collector 1 or described comb 2 laterally have the gradient; Described collector 1 and described comb 2 interconnect.
The backflow antifreezing type flat-plate solar heat collector of the first vibrational power flow mode wherein, is illustrated with Fig. 5 ~ Fig. 9, and as shown in Figure 5, described collector 1 is longitudinally vertical, and comb 2 laterally has the gradient.Saying specifically, there is angle between comb 2 center line and collector 1 center line, described angle is divided into obtuse angle, right angle and acute angle, in the present invention, only with acute angle, structure of the present invention is described, the acute angle in collector 1 center line and comb 2 centerlines is 87 ° to 88 °.Described collector 1 and described comb 2 interconnect; Described collector 1 has four ports, is provided with inner block cap 3 in the port of the lower right position of described collector 1; The port of the lower right position of described collector 1 is arranged in frame 8, and its excess-three port of described collector 1 passes described frame 8.
As shown in Figure 6, the diapire of the end of first comb 2 that the top 31 of inner block cap is adjacent is concordant, and such is arranged so that, in emptying process, in collector 1, water-holding quantity is down to minimum.
As shown in Figure 7, strengthening plate 5 is arranged on frame 8, described reinforcement plate is provided with the wide muscle of reinforcement 51 and the wide muscle 52 of lower reinforcement, is provided with one end of inner block cap 3 in described collector 1, also be provided with collector holder 4, described collector holder 4 is for fixing described collector 1; The bottom surface of described collector holder 4 is provided with groove 41; Described collector holder 4 is plugged in be strengthened between the wide muscle of reinforcement 51 on plate 5 and the wide muscle 52 of lower reinforcement, and bottom surface and the wide muscle 52 of lower reinforcement of described collector holder 4 are riveted mutually; Mat insulation 6 is provided with between described collector holder 4 and one end being provided with inner block cap of described collector 1, described mat insulation 6 is fixed on described collector holder 4 by buckle pressing plate 7;
As shown in Figure 8, three ports passing described frame 8 of described collector 1 are set with sealing ring 11, and described sealing ring 11 is inlaid on described frame 8; Sealing ring 11 and frame 8 can fix collector 1.
Be illustrated in figure 9 the system diagram of the backflow antifreezing type flat-plate solar heat collector composition of the above the first vibrational power flow mode, this system is by left, the neutralization right side, totally three unit are formed in parallel, each unit is longitudinally vertical by upper and lower two collectors 1, comb 2 laterally acclive heat collector is formed in parallel, then by connecting line, the heat collector entrance of each unit is connected, and connecting line is arranged to the gradient being greater than 0.5%, is beneficial to emptying; In Fig. 9, filled arrows instruction be the flow direction of water in evacuation procedure, due to the setting of comb 2 cross fall, water under gravity, time emptying, can emptying swimmingly, thus antifreeze technique effect realizes well.
It should be noted that, if each unit is made up of the described backflow antifreezing type flat-plate solar heat collector of more than three, four ports of the collector 1 of the described backflow antifreezing type flat-plate solar heat collector then mediated all are in the state opened, and are fixed by frame 8 and sealing ring 11; And the described backflow antifreezing type flat-plate solar heat collector being in top in each unit can regard that the heat collector shown in Fig. 5 is rotated counterclockwise 180 ° as, can not think a kind of heat collector of new structure.
The backflow antifreezing type flat-plate solar heat collector of the second vibrational power flow mode, is illustrated with Figure 10 ~ Figure 12, and as shown in Figure 10, described comb 2 is longitudinally vertical, and collector 1 laterally has the gradient.Saying specifically, there is angle between comb 2 center line and collector 1 center line, described angle is divided into obtuse angle, right angle and acute angle, in the present invention, only with acute angle, structure of the present invention is described, the acute angle in collector 1 center line and comb 2 centerlines is 88-88.5 °.Described collector 1 and described comb 2 interconnect;
As shown in figure 11, described collector 1 comprises four ports, in the port of the described collector 1 of upper left position, is equipped with inner block cap 3 in the port of the described collector 1 of position, the upper right corner; The left side wall of the first piece comb 2 adjacent with described inner block cap 3 has dredging flow groove 9; The same with the backflow antifreezing type flat-plate solar heat collector of the first vibrational power flow mode, described collector 1 is provided with one end of inner block cap 3, is provided with collector holder 4, and described collector holder 4 is for fixing described collector 1; The bottom surface of described collector holder 4 is provided with groove 41; Described collector holder 4 is plugged in be strengthened between the wide muscle of reinforcement 51 on plate 5 and the wide muscle 52 of lower reinforcement, and bottom surface and the wide muscle 52 of lower reinforcement of described collector holder 4 are riveted mutually.
As shown in figure 12, the port in described collector 1 lower left corner, the port in described collector 1 upper right corner are all welded with elbow 10, and described elbow 10 is set with sealing ring 11, and described sealing ring 11 is inlaid on frame 8.
Be the system of the backflow antifreezing type flat-plate solar heat collector composition of the second vibrational power flow mode as shown in figure 13, this system is by left, the neutralization right side, totally three unit are formed in parallel, each unit is identical by upper and lower pattern, and middle pattern connects corresponding described backflow antifreezing type flat-plate solar heat collector be in series with upper and lower; Three unit are formed in parallel by connecting line again, and the installation gradient of described connecting line is greater than 0.5%.
The present invention is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; no matter but any change is done in its shape or structure; every have identical with the application or akin technical scheme, all drops within protection scope of the present invention.
Claims (10)
1. reflux an antifreezing type flat-plate solar heat collector, comprises frame, it is characterized in that, also comprise collector and comb, and described collector or described comb laterally have the gradient; Described collector and described comb interconnect.
2. backflow antifreezing type flat-plate solar heat collector according to claim 1, is characterized in that, described collector is longitudinally vertical, and comb laterally has the gradient.
3. backflow antifreezing type flat-plate solar heat collector according to claim 1, is characterized in that, described comb is longitudinally vertical, and collector laterally has the gradient.
4. backflow antifreezing type flat-plate solar heat collector according to claim 2, it is characterized in that, described collector has four ports, is provided with inner block cap in the port of the lower right position of described collector, and the diapire of the end of first comb that the top of described inner block cap is adjacent is concordant; The port of the lower right position of described collector is arranged in described frame, and its excess-three port of described collector passes described frame.
5. backflow antifreezing type flat-plate solar heat collector according to claim 4, it is characterized in that, described scuncheon is inserted with reinforcement plate, described reinforcement plate is provided with the wide muscle of reinforcement and the wide muscle of lower reinforcement; Be provided with one end of inner block cap in described collector, be also provided with collector holder, described collector holder is used for fixing described collector; The bottom surface of described collector holder is provided with groove; Described collector holder is plugged between the wide muscle of described upper reinforcement of described reinforcement plate and the wide muscle of described lower reinforcement, and bottom surface and the wide muscle of described lower reinforcement of described collector holder are riveted mutually.
6. backflow antifreezing type flat-plate solar heat collector according to claim 5, it is characterized in that, be provided with mat insulation between described collector holder and the described collector being provided with inner block cap one end, described mat insulation is fixed on described collector holder by buckle pressing plate.
7. backflow antifreezing type flat-plate solar heat collector according to claim 6, is characterized in that, three ports passing described frame of described collector are set with sealing ring, and described sealing ring is inlaid on described frame.
8. backflow antifreezing type flat-plate solar heat collector according to claim 3, it is characterized in that, in the port of the described collector of the upper left position of described backflow antifreezing type flat-plate solar heat collector and in the port of the described collector of the lower right position of described backflow antifreezing type flat-plate solar heat collector, be equipped with inner block cap; The sidewall of the comb end adjacent with described inner block cap has dredging flow groove.
9. backflow antifreezing type flat-plate solar heat collector according to claim 8, it is characterized in that, described scuncheon is inserted with reinforcement plate, described reinforcement plate is provided with the wide muscle of reinforcement and the wide muscle of lower reinforcement; Described collector is provided with one end of inner block cap, is provided with collector holder, and described collector holder is used for fixing described collector; The bottom surface of described collector holder is provided with groove; Described collector holder is plugged between the wide muscle of described upper reinforcement of described reinforcement plate and the wide muscle of described lower reinforcement, and bottom surface and the wide muscle of described lower reinforcement of described collector holder are riveted mutually.
10. backflow antifreezing type flat-plate solar heat collector according to claim 8, it is characterized in that, the port in the described collector lower left corner, the port in the described collector upper right corner are all welded with elbow, and described elbow is set with sealing ring, and described sealing ring is inlaid on frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510242033.1A CN104896765A (en) | 2015-05-13 | 2015-05-13 | Drain back anti-freezing flat plate type solar thermal collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510242033.1A CN104896765A (en) | 2015-05-13 | 2015-05-13 | Drain back anti-freezing flat plate type solar thermal collector |
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| Publication Number | Publication Date |
|---|---|
| CN104896765A true CN104896765A (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510242033.1A Pending CN104896765A (en) | 2015-05-13 | 2015-05-13 | Drain back anti-freezing flat plate type solar thermal collector |
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| CN (1) | CN104896765A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110895057A (en) * | 2019-10-16 | 2020-03-20 | 曹树梁 | Method for mounting ceramic solar collector plate |
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| KR20120046404A (en) * | 2010-11-02 | 2012-05-10 | 한국에너지기술연구원 | Frame structure of large flat plate solar collector |
| DE102011076971A1 (en) * | 2011-06-06 | 2012-12-06 | Kunststoff-Technik Scherer & Trier Gmbh & Co. Kg | Frame structure for plate-shaped photovoltaic module used in arrangement for production of solar energy, has aluminum alloy or steel supporting portions that are provided in base, and cross-section areas that are extended from base |
| CN203100238U (en) * | 2012-12-19 | 2013-07-31 | 深圳市鹏桑普太阳能股份有限公司 | Clamping and fixing device for core of solar heat collector |
| EP2808618A2 (en) * | 2013-05-29 | 2014-12-03 | Lasierra Toldra, Antoni | Solar panel |
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2015
- 2015-05-13 CN CN201510242033.1A patent/CN104896765A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2660406Y (en) * | 2003-12-09 | 2004-12-01 | 姚琪 | Plate type solar heat collector adative to slope roofing |
| CN101144654A (en) * | 2007-10-12 | 2008-03-19 | 涂济民 | Tube sheet type system integrated solar water heater |
| CN201672727U (en) * | 2010-04-30 | 2010-12-15 | 杨宪杰 | Fold-line heat absorbing flow channel of balcony-style flat-panel solar heat collector |
| KR20120046404A (en) * | 2010-11-02 | 2012-05-10 | 한국에너지기술연구원 | Frame structure of large flat plate solar collector |
| DE102011076971A1 (en) * | 2011-06-06 | 2012-12-06 | Kunststoff-Technik Scherer & Trier Gmbh & Co. Kg | Frame structure for plate-shaped photovoltaic module used in arrangement for production of solar energy, has aluminum alloy or steel supporting portions that are provided in base, and cross-section areas that are extended from base |
| CN203100238U (en) * | 2012-12-19 | 2013-07-31 | 深圳市鹏桑普太阳能股份有限公司 | Clamping and fixing device for core of solar heat collector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110895057A (en) * | 2019-10-16 | 2020-03-20 | 曹树梁 | Method for mounting ceramic solar collector plate |
| CN110895057B (en) * | 2019-10-16 | 2021-04-02 | 曹树梁 | Method for mounting ceramic solar collector plate |
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Application publication date: 20150909 |