CN104534686A - Convex lens matrix focusing single-opening two-purpose solar cooker design method - Google Patents

Abstract

The invention provides a convex lens matrix focusing single-opening two-purpose solar cooker design method, and belongs to the technical field of solar energy utilization, energy storage technologies and mechanical design. According to the method, small convex lenses are distributed in a matrix mode to focus sunlight, the sunlight is projected to optical fibers, light is guided through thin optical fibers, all the thin optical fibers are tied into a bunch and led to a kitchen and enters an energy storage device, the energy storage device is provided with an opening, and the opening has the functions that through the opening, the sunlight can be directly irradiated on a pot for cooling, the solar energy can be stored into media of the energy storage device, and cooking can be conducted in the shading environment.

Description

A kind of convex glass matrix focuses on the method for designing of single port double-purpose solar cooker

Technical field

A kind of method for designing utilizing convex glass matrix to focus on single port double-purpose solar cooker, belong to Solar use, energy storage technology, the technical field of Machine Design, mainly by matrix distribution little convex lens, sunshine is focused on, project on optical fiber, respectively by tiny optical fiber light-guiding, all tiny optical fiber is tied up into a branch of, guide to kitchen, enter accumulator, accumulator is designed to 1 mouth, the effect of this mouthful has 3 functions, 1. be directly solar irradiation boiling on pot, 2. be that solar energy is stored in the medium of accumulator, 3. be when not having the solar time can be used for boiling.

Background technology

The modernization of World Economics, has benefited from fossil energy, and the input widely as oil, natural gas, coal and nuclear fission energy is applied.Thus it is the one economy of building on fossil energy basis.But, because the resource carrier of this economy will in the promptly close exhaustion of the 21 century first half.The comprehensive estimate of petroleum reserves, the limit of governable fossil energy, is approximately 1180 ~ 1,510 hundred million tons, with year yield 33.2 hundred million tons of calculating of nineteen ninety-five world oil, petroleum reserves declaration exhaustion about about the year two thousand fifty greatly.Gas storage is estimated at 131800 ~ 152,900,000,000 cubic metres.Year yield maintains 2,300 million cubic metres, will be exhausted in 57 ~ 65 years.The reserves of coal are about 5,600 hundred million tons.Nineteen ninety-five, coal mining amount was 3,300,000,000 tons, can be used for and answered 169 years.The year yield of uranium is annual 60000 tons at present, and the estimation according to the world energy sources committee in 1993 can be maintained to the mid-1930s 21 century.The hope that nuclear fusion did not also realize to the year two thousand fifty.Solar energy is a kind of clean reproducible energy, and in all regenerative resources, distribution of solar energy is the widest, and it is the easiest to obtain.But solar energy by geographical, round the clock with the restriction of the enchancement factor such as the impact of regular change and rain or shine sexual intercourse such as season, energy-flux density is low, usually every square metre less than one kilowatt, and in addition, energy presents unstability and discontinuity along with the change of time and weather.In order to ensure Solar use stable operation, just needing heat-storing device storage of solar energy, discharging again when solar energy is not enough, can the continuous needs with stablizing supply with satisfied production and life.This solar cooker of outdoor solar cooker can only be used for outdoor and heat up water and cook, and is promoted by each place government in the seventies.Its advantage can obtain solar energy high temperature, fuel saving.Its cost of manufacture is applicable to the living standard of peasant at that time, and its shortcoming is manual operation, very inconvenience.Generally only operate by hand, can only cook in outdoor, bear a heavy burden low, the needs of individual family life part can be met.Because cost is cheap especially, this solar cooker is until still using in many places at present.It is very obvious that Fresnel Lenses focuses on its advantage, and focusing accuracy is high.For sheet-form plasties material, light, performance is good.Be one of best mode of current solar focusing, be mainly used in solar electrical energy generation.But it is very expensive that its shortcoming is cost, and technical requirement precision is high, and the producer that can produce large-scale Fresnel Lenses in China does not have substantially, even if fertile individually, its product also all transfers outlet to.And cost is very expensive, the Fresnel Lenses price within a square about more than 1,000 yuan, even if abroad, the Fresnel Lenses of two squares about more than 6,000 yuan.Because cost is high, user often hangs back, and this makes the production capacity of Fresnel Lenses manufacturer of China receive suppression because of price and consumption market.

Summary of the invention

Present solar cooker has a variety of, of all kinds, but many some shortcomings of existence, the demand meeting people that can not be real, how to manufacture a kind of price suitable, easy to use, energy is huge, be applicable to the method for solar energy stove that family uses, very important, and will possess and deposit and can design.A kind of method for designing utilizing convex glass matrix to focus on single port double-purpose solar cooker, it is characterized in that, convex lens little are one by one embedded on a large-scale flat board, arrange by matrix, a tablet is had below large flat, 2 flat board supports are fixed, concavees lens and optical fiber are fixed on the focal position of convex lens by flat board below, also matrix arrangement is pressed, sun tracking system is set up below tablet, the effect of concavees lens is that the sunshine focused on is become directional light, project on optical fiber, or the sunshine focused on directly is projected on optical fiber, matrix arrangement also pressed by optical fiber, again optical fiber thin for a rule, be held together, guide between kitchen, then thin optical fiber one rule separately, parallel and be fixed on the suitable for reading of accumulator by intermediate symmetry, project on turn minute surface renovated above accumulator, turn the reflection that the minute surface renovated above just can carry out light 90 degree, if mirror just directly upwards reflects light above, pot is put cooking of just can cooking, turnback is renovated turning, light is just directly to lower reflection, directly to the dielectric heating in accumulator, medium in accumulator generally can be heated to a few Baidu, 90-degree rotation is renovated turning when there is no the solar time, directly put boiling, or first put crown cap above, again pot is placed on boiling on crown cap.Wherein accumulator adopts following method for designing, the overall internal layer of accumulator is ceramic material, outside is glass material, space is had between pottery and glass, be pumped into vacuum, the inside of glass is coated with silver, energy-accumulating medium is placed within pottery, 1 mouth is had above accumulator, there are 3 kinds of functions, 1. light is upwards reflected directly to steam with sunshine and fry, 2. above turn renovate turnback, sunshine to reflecting below, directly impinge upon on the medium in accumulator and carry out energy storage, 3. when there is no sunshine, overturn cover 90-degree rotation, heat energy just can from turn both sides of renovating to upper reaches, directly pot is placed on upper boiling, or first put crown cap above, again pot is placed on boiling on crown cap, if the lid of the glass of a slice 2 layers need not be put, vacuum is pumped in the centre of glass, uppermost lid insulating materials is made, mirror is against below lid, the effect of mirror is that energy is reflected back.Turn to renovate and adopt following design, turning the bottom surface of renovating, set up the small mirror of 45 degree sideling, the centre of every a slice small mirror minute surface is facing to a thin optic fibre, blocks of small mirror turns over the symmetrical arrangement of axle to turn, and arrange every 2 mirrors according to certain rules not point-blank, the mirror do not blocked below above, as much as possible the distribution of uniform light, be conducive to the absorption of pot, turn turning of renovating and turn over centre and the opposite that axle is fixed on row's optical fiber, the export center of optical fiber. the center of all small mirrors and turn turn over axle center line in one plane, turn and renovate turnback, the export center of optical fiber. the center of mirror and turn turn over axle center line also in one plane.

Accompanying drawing explanation

Fig. 1 be a kind of utilize convex glass matrix focus on single port double-purpose solar cooker structure principle chart, 1 represents sun tracking system, 2. represent compact board, 3.4.5.6. the support of the fixing compact board of representative and large template, 7.8.9.10.11 concavees lens are represented, 12.13.14.15.16. represent thin optic fibre, 17.18.19.20.21 represent sunray, 22.23 with other circle represents convex lens, 24 represent large template, 25. represent insulating lid, 26. represent the mirror be attached to above insulating lid, 28. 27. represent projection, be used for putting crown cap, or the lid of double glazing, 29 representatives turn renovates, 30. represent thin optic fibre, 31. shells representing accumulator, 32 represent accumulator inner casing, 33 represent energy-accumulating medium, 34 represent crown cap, 35. represent the glass cover of double-deck middle vacuum.Fig. 2 is optical fiber and turns the structure principle chart renovated, 1 represents the bundle that a lot of thin optic fibre is held together, 2.3.4.5.6. thin optic fibre is represented, 7.8 represent fixed rotor, 9 representatives turn renovates, and 10.11.12.13.14 represents sunray, and 15.16.17.18.19 represents little minute surface, with turn the face of renovating and become miter angle, 20. walls representing accumulator mouth.

implementation method

Because solar focusing needs larger area, if produce the convex lens mirror of a diameter 5 meters, difficulty is very huge, also be impossible, if passable, price is very expensive, there is no that people uses, observatory can only be used for, or military upper use, can not enter civilian, the light focused on is too many, optical fiber also holds be can't stand, so use the convex lens of little, then its matrix is arranged, the very cheap and better effects if of such cost, and pass through sun tracking system, farthest utilize solar energy, sunshine by convex lens focus little one by one, then by concavees lens, it is become directional light, or directly throw on respective thin optic fibre, again these thin optic fibres are flocked together, form a bundle, guide in kitchen, be arranged on above accumulator, then the thin optic fibre of bundle the inside separately, parallel and be fixed on the suitable for reading of accumulator by intermediate symmetry, light-emitting window is aimed to turn and is renovated, turn and renovate, fix some eyeglasses, eyeglass becomes miter angle with turn face of renovating, the centre of optical fiber align mirror, the symmetrical arrangement of turning cylinder pressed by mirror, like this when mirror upwards reflects projecting the light of coming when changing above capping, so just directly pot can be put cooking to cook, if revolve turnback turning to renovate, mirror is projecting the light of coming directly to lower reflection, medium in heating accumulator, when there is no sunshine, insulating lid is above moved, glass cover is also had also to move below lid, 90-degree rotation is renovated turning, heat energy just can from turn both sides of renovating to upper reaches, directly pot is placed on upper boiling, or first put crown cap above, again pot is placed on boiling on crown cap, lid insulating materials is above made, and against mirror below lid, the effect of mirror is that energy is reflected back, glass cover is that 2 layers of glass are made, centre is hollow, be pumped into vacuum, be used to heat insulation.

Claims (3)

1. the method for designing utilizing convex glass matrix to focus on single port double-purpose solar cooker, it is characterized in that, convex lens little are one by one embedded on a large-scale flat board, arrange by matrix, a tablet is had below large flat, 2 flat board supports are fixed, concavees lens and optical fiber are fixed on the focal position of convex lens by flat board below, also matrix arrangement is pressed, sun tracking system is set up below tablet, the effect of concavees lens is that the sunshine focused on is become directional light, project on optical fiber, or the sunshine focused on directly is projected on optical fiber, matrix arrangement also pressed by optical fiber, again optical fiber thin for a rule, be held together, guide between kitchen, then thin optical fiber one rule separately, parallel and be fixed on the suitable for reading of accumulator by intermediate symmetry, project on turn minute surface renovated above accumulator, turn the reflection that the minute surface renovated above just can carry out light 90 degree, if mirror just directly upwards reflects light above, pot is put cooking of just can cooking, turnback is renovated turning, light is just directly to lower reflection, directly to the dielectric heating in accumulator, medium in accumulator generally can be heated to a few Baidu, 90-degree rotation is renovated turning when there is no the solar time, directly put boiling, or first put crown cap above, again pot is placed on boiling on crown cap.

2. method according to claim 1, accumulator adopts following design, the overall internal layer of accumulator is ceramic material, outside is glass material, space is had between pottery and glass, be pumped into vacuum, the inside of glass is coated with silver, energy-accumulating medium is placed within pottery, 1 mouth is had above accumulator, there are 3 kinds of functions, 1. light is upwards reflected directly to steam with sunshine and fry, 2. above turn renovate turnback, sunshine to reflecting below, directly impinge upon on the medium in accumulator and carry out energy storage, 3. when there is no sunshine, overturn cover 90-degree rotation, heat energy just can from turn both sides of renovating to upper reaches, directly pot is placed on upper boiling, or first put crown cap above, again pot is placed on boiling on crown cap, if the lid of the glass of a slice 2 layers need not be put, vacuum is pumped in the centre of glass, uppermost lid insulating materials is made, mirror is against below lid, the effect of mirror is that energy is reflected back.

3. method according to claim 1, turn to renovate and adopt following design, turning the bottom surface of renovating, set up the small mirror of 45 degree sideling, the centre of every a slice small mirror minute surface is facing to a thin optic fibre, blocks of small mirror turns over the symmetrical arrangement of axle to turn, and arrange every 2 mirrors according to certain rules not point-blank, the mirror do not blocked below above, as much as possible the distribution of uniform light, be conducive to the absorption of pot, turn turning of renovating and turn over centre and the opposite that axle is fixed on row's optical fiber, the export center of optical fiber. the center of all small mirrors and turn turn over axle center line in one plane, turn and renovate turnback, the export center of optical fiber. the center of mirror and turn turn over axle center line also in one plane.