CN203231567U - Flat-plate solar collector - Google Patents
Flat-plate solar collector Download PDFInfo
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- CN203231567U CN203231567U CN2013201931603U CN201320193160U CN203231567U CN 203231567 U CN203231567 U CN 203231567U CN 2013201931603 U CN2013201931603 U CN 2013201931603U CN 201320193160 U CN201320193160 U CN 201320193160U CN 203231567 U CN203231567 U CN 203231567U
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- heat
- absorbing sheet
- flat
- plate
- plate solar
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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
The utility model discloses a flat-plate solar collector and belongs to the field of water heaters. The flat-plate solar collector comprises an outer frame with a collector cavity and a heat-absorbing sheet longitudinally disposed in the collector cavity. The outer surface of the heat-absorbing sheet is provided with a plurality of longitudinal corrugated projections side by side. Each corrugated projection is provided with an inner closed microchannel filled with working medium. A heat exchange channel is formed on the inner side of the heat-absorbing sheet at the top of the collector cavity. A heat exchange tube is disposed in the heat exchange channel. The flat-plate solar collector has the advantages that the closed microchannels in the corrugated projections are filled with the working medium, the microchannels and the heat-absorbing sheet are in an integrated heat tube structure, the corrugated projections absorb solar energy and transmit the heat to the heat exchange tube through the heat tube structure so that heat collection is achieved, the heat tube structure and the heat-absorbing sheet are integrally produced, structural integrity is improved, production and mounting are facilitated, maintenance is facilitated, the area of the heat-absorbing sheet, absorbing solar radiation, is increased through the corrugated projections on the outer surface of the heat-absorbing sheet, and heat absorbing capacity is improved.
Description
Technical field
The utility model is used for field of solar energy, particularly relates to a kind of flat-plate solar collector.
Background technology
Along with becoming increasingly conspicuous of problems such as energy crisis and environmental pollution, countries in the world are to the continuous intensification of energy-saving and emission-reduction and environmental protection understanding, and solar energy has incomparable advantage, rely on the collecting apparatus of conversion solar radiant energy to become the trend that solar energy utilizes.Especially flat-plate solar collector, have simple in structure, be easy to and build in conjunction with, direct solar radiation and advantage such as diffusion radiation is evenly gathered and cost is relatively low, caused building trade and consumer's favor.Yet, easily fouling and can't cleaning in the comb of ordinary flat solar thermal collector, comb easily can be produced backflow by bursting by freezing and night during subzero, and these shortcomings have all limited the large tracts of land of ordinary flat solar thermal collector and have promoted the use of.Hot pipe technique is introduced flat-plate solar collector can overcome above-mentioned shortcoming well.Heat pipe has that heat-transfer capability is strong, frost resistance good, and unidirectional heat transfer can not produce hot reflux, does not have scale problems.At present effect has the solar absorber plate of tabular heat pipe preferably, and it has considered processing, cost and heat transfer property, but its low-grade fever tube bank is limited in the tabular heat pipe framework, causes making and the loaded down with trivial details inconvenience of installation procedure, and material weight is increase greatly also; In addition, the design of the plane surface shape of plate frame is unfavorable for increasing the absorption area to sunshine; And micro heat pipe and tabular heat absorbing sheet employing split-type structural, make that total globality and intensity reduce, the heat-transfer effect variation more is difficult to safeguard.
Flat-plate solar collector causes heat collector to produce mechanical fatigue because variation of temperature causes the fluctuation of gas pressure in the system, has reduced its service life.Flat-plate solar collector in the market is for this problem, and the non-airtight design of heat collector is adopted in the production commercial city.This can strengthen in the solar energy collector system and the heat convection between environment, also can introduce in the heat collector Heat-collecting effect and the service life of having reduced heat collector to molecule or pernicious gas simultaneously.Transparent cover plate and the air between the absorber plate at flat-plate solar collector can cause thermal convection current owing to non-uniform temperature, reduce Heat-collecting effect thereby influence heat insulation effect.At present general technology is the device that honeycomb is set between them, and this can cause that difficulty of processing and cost rise to have reduced simultaneously and project the lip-deep sunshine of absorber plate.
The utility model content
For addressing the above problem, the utility model provides a kind of structural integrity, convenient flat-plate solar collector of making and installing, be convenient to safeguard and increase the sunshine absorption area of improving.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of flat-plate solar collector, comprise the outside framework that is provided with heat collector cavity and vertically be located at the interior heat absorbing sheet of heat collector cavity, be provided with some projectioies of ripple longitudinally on the outer surface of heat absorbing sheet side by side, be equipped with airtight in each ripple projection and be filled with the microchannel of working medium, the top of heat collector cavity is provided with the heat exchange groove in the inboard of heat absorbing sheet, is connected with heat exchanger tube in the heat exchange groove.
Be further used as the improvement of technical solutions of the utility model, outside framework is provided with the transparent cover plate of sealing heat collector cavity in the outside of heat absorbing sheet, and the inboard of transparent cover plate is provided with some horizontal spoilers side by side.
Be further used as the improvement of technical solutions of the utility model, be provided with drier in the heat collector cavity and be filled with nitrogen or inert gas.
Be further used as the improvement of technical solutions of the utility model, outside framework is provided with the breathing bag of connecting with heat collector cavity.
Be further used as the improvement of technical solutions of the utility model, outside framework comprises frame and base plate, is provided with heat-insulation layer between base plate and heat absorbing sheet.
Be further used as the improvement of technical solutions of the utility model, heat-insulation layer and base plate are two inner layer transparent plates that be arranged in parallel and outer transparent panel, and inner layer transparent plate is provided with aperture, and breathing bag passes outer transparent panel and heat collector cavity is connected.
Be further used as the improvement of technical solutions of the utility model, the endotherm section that heat absorbing sheet comprises the heat release section that contacts with the heat exchange groove and is positioned at this heat release section below, endotherm section is provided with solar spectral selective absorbing coating in the ripple convex surfaces, and heat release section is provided with Titanium or titanium alloy or zircaloy in the port of microchannel.
Be further used as the improvement of technical solutions of the utility model, the cross section of ripple projection is circular arc or triangle.
The beneficial effects of the utility model: can working medium in the microchannel that in the ripple projection, seals among the present invention, make the heat pipe structure of each microchannel formation and heat absorbing sheet one, the ripple projection absorbs solar energy and constantly heat is passed to heat exchanger tube by heat pipe structure, finish heat collection function, the wherein integrated production of heat pipe structure and heat absorbing sheet, improve structural integrity, convenient manufacturing and installed, be convenient to maintenance, the design of heat absorbing sheet outer surface ripple projection has simultaneously increased the absorption area of heat absorbing sheet to solar radiant energy, has promoted heat absorption capacity.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the utility model overall structure front view;
Fig. 2 is that cross-sectional view is looked on the right side of the utility model first embodiment;
Fig. 3 is the first embodiment sectional drawing of the utility model heat absorbing sheet;
Fig. 4 is the second embodiment sectional drawing of the utility model heat absorbing sheet;
Fig. 5 is the 3rd embodiment sectional drawing of the utility model heat absorbing sheet;
Fig. 6 is that cross-sectional view is looked on the right side of the utility model second embodiment.
The specific embodiment
With reference to Fig. 1～Fig. 6, the utility model provides a kind of flat-plate solar collector, comprise the outside framework 1 that is provided with heat collector cavity 10 and vertically be located at heat absorbing sheet 2 in the heat collector cavity 10, be provided with some projectioies of ripple longitudinally 21 on the outer surface of heat absorbing sheet 2 side by side, be equipped with airtight in each ripple projection 21 and be filled with the microchannel 22 of working medium, the top of heat collector cavity 10 is provided with heat exchange groove 3 in the inboard of heat absorbing sheet 2, is connected with heat exchanger tube 4 in the heat exchange groove 3.
During use, solar irradiation is mapped to the ripple projection 21 on the heat absorbing sheet 2, wherein most solar radiant energies are that heat absorbing sheet 2 absorbs, change heat energy into, and pass working medium in the microchannel 22, working medium heat absorption evaporation in the microchannel 22, high temperature refrigerant steam enters the top of heat collector cavity 10 and carries out the heat exchange condensation with the heat exchange groove 3 of heat absorbing sheet 2 inboards by each microchannel 22, be connected with medium in the heat exchanger tube 4 in the heat exchange groove 3, medium is heated in heat transfer process, after the heat exchange, the bottom that the working medium of condensation liquefaction wall by each microchannel 22 under gravity and the effect of REFRIGERATION SYSTEM DRIVEN BY CAPILLARY FORCE power is back to heat collector cavity 10 absorbs heat of vaporization again, so constantly circulation, heat absorbing sheet 2 just can continuously be transported to the solar radiation that absorbs in the medium of heat exchange groove 3, thereby reaches the purpose of utilizing solar radiant energy.
Can working medium in the microchannel 22 that in ripple projection 21, seals among the present invention, make the heat pipe structure of each microchannel 22 formation and heat absorbing sheet 2 one, make heat collector have the high advantage of adopting heat pipes for heat transfer efficient, working medium has solved the freeze proof problem that the ordinary flat solar thermal collector exists as heat transfer medium; Heat pipe structure and heat absorbing sheet 2 pass through the integrated manufacturing of extrusion technique by metal or high heat-conducting plastic, have the advantage energy-saving and cost-reducing, that structural strength is high, ultra-thin and non-maintaining; Simultaneously, the design of ripple projection 21 has increased the absorption area of 2 pairs of solar radiant energies of heat absorbing sheet, has promoted heat absorption capacity, and heat absorbing sheet 2 walls with ripple projection 21 are thin and even, reduced material consumption and the cost of heat absorbing sheet 2; In addition, heat exchange groove 3 is arranged on the inner side surface of heat absorbing sheet 2, makes heat absorbing sheet 2 not have scale problems, has guaranteed the long-term efficient operation of heat absorbing sheet 2.
As the utility model preferred embodiment, outside framework 1 is provided with the transparent cover plate 5 of sealing heat collector cavity 10 in the outside of heat absorbing sheet 2, and the inboard of transparent cover plate 5 is provided with some horizontal spoilers 51 side by side.
Entering of heat convection between heat collector cavity 10 and environment and molecule or pernicious gas avoided in the setting of transparent cover plate 5, improved Heat-collecting effect and the service life of heat collector.By at transparent cover plate 5 inboard horizontally set spoilers 51, eliminated the gas thermal convection current between transparent cover plate 5 and the heat absorbing sheet 2, thereby improved the collecting efficiency that heat insulation effect has improved heat collector.The material of spoiler 51 adopts the PC plastic sheet of high transmission rate, does not influence the ripple projection 21 that sunshine projects heat absorbing sheet 2 on the one hand, on the other hand can be bonding spoiler 51 and transparent cover plate 5 by light-curing adhesive, reduced difficulty of processing and cost.
As the utility model preferred embodiment, be provided with drier in the heat collector cavity 10 and be filled with nitrogen or inert gas.
Drier is set to remove the moisture of gas in the heat collector cavity 10 in airtight heat collector cavity 10, eliminates moisture to the harmful effect of collector system material.Nitrogen or the inert gas of filling improve heat-insulating property, reduce the aging speed of solar spectral selective absorbing coating to the utmost.
As the utility model preferred embodiment, outside framework 1 is provided with the breathing bag of connecting with heat collector cavity 10 6.
Flat-plate solar collector adopts airtight design, automatic telescopic adjustment by breathing bag 6 makes heat collector cavity 10 internal gas pressures not be subjected to the influence of the temperature difference, and keep balance with ambient atmosphere pressure, the mechanical fatigue that elimination is caused by air pressure change, wherein, the capacity of breathing bag 6 calculates by The Ideal-Gas Equation and determines.
As the utility model preferred embodiment, outside framework 1 comprises frame 11 and base plate 12, and 2 of base plate 12 and heat absorbing sheets are provided with heat-insulation layer 7.
The outer surface of heat absorbing sheet 2 is ripple projection 21, and this ripple projection 21 arranges to absorb solar energy on the sunny side; The inner surface of heat absorbing sheet 2 is the plane, and contacts with heat-insulation layer 7, reduces scattering and disappearing of heat.
As the utility model preferred embodiment, heat-insulation layer 7 and base plate 12 are two inner layer transparent plates that be arranged in parallel 70 and outer transparent panel 120, and inner layer transparent plate 70 is provided with aperture 71, and breathing bag 6 passes outer transparent panel 120 and connects with heat collector cavity 10.
Heat-insulation layer 7 and base plate 12 adopt inner layer transparent plate 70 and outer transparent panel 120 respectively, and 2 of inner layer transparent plate 70 and heat absorbing sheets form the gas interlayer, and heat collector carries out heat-insulation and heat-preservation by this gas interlayer and 70 pairs of heat absorbing sheets of inner layer transparent plate 2, reduce scattering and disappearing of heat; Breathing bag 6 and heat collector cavity 10 communicate and at inner layer transparent plate 70 aperture 71 are set, and make heat collector cavity 10 internal gas pressures not be subjected to the influence of the temperature difference.This embodiment energy and building combination more attractive in appearance, the spacing of regulating between the heat absorbing sheet 2 can be regulated the interior area of sunshine inlet chamber, carries out the indoor light of getting.
As the utility model preferred embodiment, the endotherm section that heat absorbing sheet 2 comprises the heat release section that contacts with heat exchange groove 3 and is positioned at this heat release section below, endotherm section is provided with solar spectral selective absorbing coating on ripple projection 21 surfaces, and heat release section is provided with Titanium or titanium alloy or zircaloy in the closed port of microchannel 22.
Heat absorbing sheet 2 is fixed on the outer surface of heat exchange groove 3 by rivet 23, and scribbles heat-conducting glue at contact-making surface.When solar spectral selective absorbing coating is established in its ripple projection 21 surfaces plating, produce ripple projection 21 and microchannel 22 by extrusion process earlier, the port of sealing heat absorbing sheet 2 endotherm sections, plate solar spectral selective absorbing coating by magnetically controlled sputter method or vacuum evaporation method or electrochemical method or chemical method or spraying method on ripple projection 21 surfaces of endotherm section, application of vacuum and perfusion fluid working medium again, the port of finally sealed heat release section.In order to adsorb the incoagulable gas hydrogen that produce in the microchannel 22, and discharge outside the heat pipe, Titanium or titanium alloy or zircaloy are set in the port of heat release section, guaranteed the hot transportation performance of heat pipe structure.
As the utility model preferred embodiment, the cross section of ripple projection 21 is circular arc or triangle.
In order to make heat absorbing sheet 2 have better heat transfer property, by the surface in ripple projection 21 powder sintered layer or woven wire or foam metal layer or high molecular polymer froth bed or metallic fiber sintered felt layer or little groove are set, or hydrophobic coating are set and endotherm section arranges hydrophilic coating in heat release section.
Circular arc or triangle are the utility model preferred embodiment, and under processing enabled condition, its cross section can be processed as any bellows-shaped.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite of the utility model spirit, the modification that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (8)
1. flat-plate solar collector, it is characterized in that: comprise the outside framework (1) that is provided with heat collector cavity (10) and vertically be located at the interior heat absorbing sheet (2) of described heat collector cavity (10), be provided with some projectioies of ripple longitudinally (21) on the outer surface of described heat absorbing sheet (2) side by side, be equipped with airtight in each described ripple projection (21) and be filled with the microchannel (22) of working medium, the top of described heat collector cavity (10) is provided with heat exchange groove (3) in the inboard of heat absorbing sheet (2), is connected with heat exchanger tube (4) in the described heat exchange groove (3).
2. flat-plate solar collector according to claim 1, it is characterized in that: described outside framework (1) is provided with the transparent cover plate (5) of sealing heat collector cavity (10) in the outside of heat absorbing sheet (2), the inboard of described transparent cover plate (5) is provided with some horizontal spoilers (51) side by side.
3. flat-plate solar collector according to claim 2 is characterized in that: be provided with drier and be filled with nitrogen or inert gas in the described heat collector cavity (10).
4. according to claim 2 or 3 described flat-plate solar collectors, it is characterized in that: described outside framework (1) is provided with the breathing bag of connecting with heat collector cavity (10) (6).
5. flat-plate solar collector according to claim 4, it is characterized in that: described outside framework (1) comprises frame (11) and base plate (12), is provided with heat-insulation layer (7) between described base plate (12) and heat absorbing sheet (2).
6. flat-plate solar collector according to claim 5, it is characterized in that: described heat-insulation layer (7) and base plate (12) are two inner layer transparent plates that be arranged in parallel (70) and outer transparent panel (120), described inner layer transparent plate (70) is provided with aperture (71), and described breathing bag (6) passes outer transparent panel (120) and connects with heat collector cavity (10).
7. flat-plate solar collector according to claim 6, it is characterized in that: the endotherm section that described heat absorbing sheet (2) comprises the heat release section that contacts with heat exchange groove (3) and is positioned at this heat release section below, described endotherm section is provided with solar spectral selective absorbing coating on ripple projection (21) surface, and described heat release section is provided with Titanium or titanium alloy or zircaloy in the port of microchannel (22).
8. flat-plate solar collector according to claim 7, it is characterized in that: the cross section of described ripple projection (21) is circular arc or triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201931603U CN203231567U (en) | 2013-04-16 | 2013-04-16 | Flat-plate solar collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201931603U CN203231567U (en) | 2013-04-16 | 2013-04-16 | Flat-plate solar collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203231567U true CN203231567U (en) | 2013-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201931603U Expired - Fee Related CN203231567U (en) | 2013-04-16 | 2013-04-16 | Flat-plate solar collector |
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| Country | Link |
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| CN (1) | CN203231567U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216953A (en) * | 2013-04-16 | 2013-07-24 | 广州粤海真空技术有限公司 | Flat plate solar heat collector |
-
2013
- 2013-04-16 CN CN2013201931603U patent/CN203231567U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216953A (en) * | 2013-04-16 | 2013-07-24 | 广州粤海真空技术有限公司 | Flat plate solar heat collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20160416 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |