CN204595314U - A kind of dish-style Fresnel reflection beam condensing unit - Google Patents
A kind of dish-style Fresnel reflection beam condensing unit Download PDFInfo
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- CN204595314U CN204595314U CN201520155896.0U CN201520155896U CN204595314U CN 204595314 U CN204595314 U CN 204595314U CN 201520155896 U CN201520155896 U CN 201520155896U CN 204595314 U CN204595314 U CN 204595314U
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- shaped annular
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- reflex face
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- 230000011514 reflex Effects 0.000 claims abstract description 45
- 230000003287 optical effect Effects 0.000 description 10
- 230000004907 flux Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
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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
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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
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
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Abstract
The utility model relates to a kind of dish-style Fresnel reflection beam condensing unit, comprises bar shaped annular reflex face and the receiver of a series of different radii.The reflecting focal of incident light through corresponding bar shaped annular reflex face is on the receiver of light source opposite side.The bar shaped annular reflex face of diverse location by incidence light thereon all reflecting focal on receiver, improve the energy density on receiver, reach the object of optically focused.According to practical application, different parameters bar shaped annular reflex face can be designed to arrive required light concentrating times.Receiver and light source, respectively in condenser both sides, improve the dirigibility that receiver is arranged, and have more space in the middle of bar shaped annular reflex face, have heightened the wind resistance of device.
Description
Technical field
The utility model relates to technical field of solar utilization technique, is a kind of dish-style Fresnel reflection beam condensing unit, and can produce suitable focusing according to the requirement of receiver can flow.
Background technology
Sun power is the green energy resource that a kind of clean amount is large, and global total radiation is about 1.7 × 10
17w, wherein China accounts for 1%(1.8 × 10
15w, is equivalent to 1.9 trillion tons of mark coal/years), be 680 times of China's total energy consumption of current year.Sun power will occupy an important position in future source of energy.
Solar energy generation technology is mainly divided into photovoltaic generation and photo-thermal power generation.Photovoltaic generation mainly utilizes the photovoltaic effect of photovoltaic cell to generate electricity.Because solar energy current density is low, the photovoltaic battery panel area needed for unit generating capacity is large, and photovoltaic cell board manufacturing process energy consumption is large, seriously polluted.Therefore beam condensing unit is utilized to project the consumption that photovoltaic cell just can reduce battery again by after sunshine low for energy flux density gathering.The light-concentrating material be equivalent to price is relatively cheap replaces photovoltaic cell material.Photo-thermal power generation mainly utilizes condenser mirror to be gathered together by sunshine, is the heat energy of working medium, then is generated electricity by Thermal Motor by photothermal conversion.Same for reaching higher temperature, solar energy thermal-power-generating needs beam condensing unit.
Traditional condenser has Fresnel Lenses, slot type, dish-style and tower reflecting and condensing device.Fresnel Lenses adopts transmission material, through light refraction principle optically focused.Generally can to manufacture with optical plastic, but due to the limitations affect raising of focusing ratio of the refractive index of optical plastic.To the weight of system be made excessive according to glass.In addition because the optical property of material can have decay by a relatively large margin along with the time.Reflecting and condensing device needs accurate continuous reflection surface.When reflecting surface increases, give to manufacture and install and bring larger trouble.And its receptacle is generally positioned at the top of condenser, i.e. the position in high-altitude, causes a part of shading and installs receiver bringing larger difficulty.In addition photovoltaic and solar thermal utilization form all require receptacle has uniform as far as possible flux-density distribution, and traditional condenser not this characteristic.
Summary of the invention
In order to overcome the shortcoming of traditional condenser, the utility model provides a kind of dish-style Fresnel reflection beam condensing unit.
Dish-style Fresnel reflection beam condensing unit comprises reflection mirror array, receiver and Fresnel Lenses, described reflection mirror array is made up of several bar shaped annular reflex face arranged by diameter, described Fresnel Lenses is positioned at the centre of the described reflection mirror array be made up of bar shaped annular reflex face, receiver and incident ray lay respectively at the both sides of described reflection mirror array, part incident ray by the reflect focalization of bar shaped reflecting surface on receiver, another part incident ray through the Refractive focusing of Fresnel Lenses on receiver.
This device is made up of a series of bar shaped annular reflex face and receiver, and the sunshine incided on bar shaped annular reflex face converges on the receiver of setting after passing through reflection.The sunshine accepted separately reflexes on receiver by different bar shaped annular reflex faces, forms focal beam spot, improves the energy flux density on receiver.Different bar shaped annular reflex faces is arranged in position, avoids a tore of reflection in the face of another reflection incident light of anchor ring or blocking of reflected light.The molded line of reflecting surface can select para-curve, ellipse, circle and high order curve etc., when ensureing spotlight effect, straight line can be selected to replace curved surface.In addition single condenser can be made up of the curve anchor ring of same kind, and curve combination not of the same race also can be adopted to become.
The utility model provides a kind of lower beam condensing unit of improvement, produces the optically focused met required by receptacle.This device combines the local optically focused of similar Fresnel mirror and the thinking of localized design optimization, optimizes spotlight effect.Adopt narrow anchor ring to be that making and installation provides comparatively convenience, lighter reflecting material can be adopted, alleviate installation weight, reduce cost.
Solar energy after line focus efficiency utilization enough in various manners, general receiver is hot receiver and photovoltaic cell, produces heat or electric energy.This device needs corresponding support and tracker, makes device can aim at sunshine and carries out high-effective concentration.In addition this device can be coupled with secondary light condensing device further, improves the homogeneity of light gathering and flux-density distribution further.
Compared with prior art, the utility model has following advantage:
1, the utility model adopts multiple bar shaped annular reflex anchor ring to carry out reflecting condensation, can carry out condenser performance design, meet the light concentrating times needed for different receiver according to receiver characteristic, improves the homogeneity that can flow of focus point, flexible design.
2, the utility model adopts numerous reflection anchor ring optically focused, and receiver, in the below of condenser, facilitates support Design and receiver mounting arrangements, and decreases the incident light that conventional mounting brings above spotlight camber and block.
3, the annular light concentrating components making and installation of monolithic is more convenient, reduces the cost of package unit.
Accompanying drawing explanation
Fig. 1 is lower optically focused dish-style Fresnel reflection beam condensing unit schematic diagram;
Fig. 2 is single bar shaped annular reflex face schematic diagram;
Fig. 3 is the optically focused schematic diagram that optical axis cross section is crossed in multiple bar shaped annular reflex face;
Tu4Shi center arranges Fresnel Lenses beam condensing unit and crosses optical axis schematic cross-section;
Fig. 5 is the secondary annular strip reflecting surface schematic diagram of the utility model.
In figure, the name of sequence number is called: 1, axis, 2, incident ray, and the reflecting surface inside 3 bar shaped annular reflex faces, 4, bar shaped annular reflex face, 5, reflection ray, 6, receiver, 7, Fresnel Lenses, 8, secondary bar shaped annular reflex face.
Embodiment
Now by reference to the accompanying drawings, the utility model is described further.
As Figure 1-4, a kind of dish-style Fresnel reflection beam condensing unit comprises reflection mirror array and receiver 6, described reflection mirror array is made up of several bar shaped annular reflex face 4 arranged by diameter, described bar shaped annular reflex face 4 by the light 2 that incides on it through reflecting focal on described receiver 6, described receiver 6 and incident ray 2 are respectively in the both sides of described reflection mirror array.
Inside described bar shaped annular reflex face, 3 have smooth reflecting surface, can incide the light on its surface by usable reflection.
Described bar shaped annular reflex face 4 cross the plane of axis 1 the molded line that cuts be one or more in straight line, para-curve, circular arc, ellipse, hyperbolic curve, high order curve.
Described receiver 6 is photovoltaic power generation apparatus or heat collector.
Described receiver entrance installs secondary condenser, improves the energy density arriving receiver.
Described bar shaped annular reflex face 4 and receiver 6 are arranged on dual-axis tracking system, make condenser axis just to the sun.As shown in Figure 5, there is several secondary annular strip reflecting surface 8 along optical axis direction arrangement the inner side in described bar shaped annular reflex face 4.
The zone line of the reflection mirror array that described bar shaped annular reflex face 4 forms sets up Fresnel Lenses 7, described Fresnel Lenses 7 is vertical with optical axis, part incident ray 2 by the reflect focalization of bar shaped reflecting surface 4 on receiver 6, another part incident ray 2 through the Refractive focusing of Fresnel Lenses 7 on receiver 6.
As shown in Figure 1, along the light 2 of optical axis 1 incidence, the reflecting surface 3 inside bar shaped annular reflex face 4 reflects, and reflection ray 5 changes direction and arrives receiver 6.Figure 2 shows that single bar shaped annular reflex face, axis has certain width, and inside surface has light-reflecting property.Reflecting surface molded line can be straight line, circular arc, para-curve, ellipse, hyperbolic curve and high order curve etc.The concrete molded line in its surface and width in the axial direction and diameter are designed according to himself position in the bar shaped annular reflex face 4 of each diverse location, make light can reflex on the receiver 6 of certain area, and adjacent bar shaped annular reflex face is reduced as much as possible block, improve optical efficiency.Shown in Fig. 3 is the condenser sectional view that multiple bar shaped annular reflex face 4 forms, and the light dropped on each bar shaped annular reflex face reflexes on receiver 6, and the energy flux density that receiver is accepted improves greatly, arrives the requirement needed for practical application.
Improvement project 1: when bar shaped annular reflex face 4 diameter is more and more less time, reflecting surface tangent slope is original larger, make bar shaped annular reflex face area larger, for saving material, as figure arranges Fresnel Lenses 7 in the middle of condenser, and make its focus just drop on receiver 6, improve the utilization factor of luminous energy, also improve the energy flux density on receiver.
Improvement project 2: described bar shaped annular reflex face 4 is made up of less secondary bar shaped annular reflex face 8, described secondary bar shaped annular reflex face 8 arranges along optical axis direction.As shown in Figure 5, bar shaped annular reflex face is divided into less secondary bar shaped annular reflex face 8, each secondary bar shaped annular reflex face by the light reflection that incides on it on receiver 6, therefore the molded line of the reflecting surface in secondary bar shaped annular reflex face 8 can replace just obtaining good spotlight effect with straight line, and whole bar shaped annular reflex face becomes writing board shape, be convenient to manufacture and install.
Claims (1)
1. a dish-style Fresnel reflection beam condensing unit, it is characterized in that comprising reflection mirror array, receiver (6) and Fresnel Lenses (7), described reflection mirror array is made up of several bar shaped annular reflex face (4) arranged by diameter, described Fresnel Lenses (7) is positioned at the centre of the described reflection mirror array be made up of bar shaped annular reflex face (4), receiver (6) and incident ray (2) lay respectively at the both sides of described reflection mirror array, part incident ray (2) by the reflect focalization of bar shaped reflecting surface (4) on receiver (6), another part incident ray (2) through the Refractive focusing of Fresnel Lenses (7) on receiver (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520155896.0U CN204595314U (en) | 2015-03-19 | 2015-03-19 | A kind of dish-style Fresnel reflection beam condensing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520155896.0U CN204595314U (en) | 2015-03-19 | 2015-03-19 | A kind of dish-style Fresnel reflection beam condensing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204595314U true CN204595314U (en) | 2015-08-26 |
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ID=53931456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520155896.0U Expired - Fee Related CN204595314U (en) | 2015-03-19 | 2015-03-19 | A kind of dish-style Fresnel reflection beam condensing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204595314U (en) |
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2015
- 2015-03-19 CN CN201520155896.0U patent/CN204595314U/en not_active Expired - Fee Related
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| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 |