222 results about "Solar cooker" patented technology

A solar cooker in the form of a pot with double-walled body and lid configured to collectively constitute a near-hermetic thermal enclosure including a closed, solar radiation-absorbing and heat-retaining vessel surrounded by a vacuum insulation shield encased in a transparent peripheral jacket. The device intercepts solar energy omnidirectionally, and collects and retains it with sufficient efficiency to pasteurize water and cook food without resorting to outside reflectors, refractors, conductors, or insulators, thereby escaping from the dual requirements of solar concentration and orientation that universally govern the construction and operation of existing solar cookers. Freedom from these restrictions enables designs that are inexpensive, simple, compact, lightweight, sturdy, accessible, and applicable in varied geographic, climatic, economic, social, and culinary contexts.

A photovoltaic intensification system includes a solar array stand, further including a mounting base; a mounting column; a solar array frame, a solar array, solar array lenses or reflectors, a light sensor, an elevation actuator, and a horizontal actuator; and a solar system cart, further including: a cart enclosure, a radiant solar cooker chamber, cart reflectors, and cart wheels. Further included are a vertical tilt ring, a strong-arm rod, a mass pivot rod, an elevation actuating ring, a horizontal tilt ring, and mounting brackets. A power and control system for photovoltaic intensification further includes a battery charger, a battery, an A / C inverter, a solar control unit, a remote control, a thermo electric freezer component, and a heat exchanger. A solar control unit includes a light sensor control circuit and a temperature control circuit, or a processor, a non-transitory memory, an input / output, an actuator controller, and a temperature controller.

The invention relates to a solar facility of a high industrial production line of forage grasses, vegetables, flowers and medical materials, which consists of an insulating production room, a chain ring cycle framework, a nutrient solution culturing plate, carbon dioxide gas, a thermocouple generator, a solar lens thermoelectric generator, a solar cooker thermoelectric generator, a solar lens thermoelectric generator, a heating bag and an LED power generation lamp. The facility can provide renewable energy sources and translucent insulation effect for the high industrial production line. The all-weather heating, insulation and light supplementation can be realized in the facility. The adoption of nutrient solution for culture increases the growth speed and prevents diseases and pests, and the forage grasses, vegetables, flowers and medical materials can be harvested all year round. Another significant feature of the facility is special development. The facility can save a large quantity of farmland, water resources and fertilizers, and can be used for all-weather production in any place (deserts, mountain areas, areas without power supply and areas in front of and behind houses). Moreover, the facility is a significant subject studied around the world at present. The invention can develop new living space for human beings, and has incalculable environmental, economic and social benefits.

The invention discloses a kind of heat pipe solar energy pipe, which use optical lens like lens or reflector to generate heat energy of high temperature. Use heat tube technology to absorb, transfer, and exchange heat. Use tray-type tracing system or cross-tracing system to collect solar energy and heat tube or forced convection circulation to realize heat exchange. Meanwhile, more than one tray-type or cross-type tracing systems can be adopted, which enables solar-energy usage in high temperature and high-power with high efficiency. Using heat accumulator to reserve heat energy provides practical technology to the usage of solar energy, especially the usage in the condition of high temperature.

The invention provides an automatic follow sun device and a connecting drive mechanism and relates to the solar energy utilization technical field; the automatic follow sun device is formed by that: a push-pull device of a bracket is accurately controlled by a controller to drive a ratchet wheel device intermittently; the ratchet wheel device is connected with and drives a light absorbing body to rotate and follow the sun, or an electromotor of the bracket and a clutch of a ratchet wheel row are accurately controlled by the controller; the electromotor drives the ratchet wheel row; the ratchet wheel row is connected with and intermittently drives the light absorbing body to rotate and follow the sun; a connecting drive mechanism is a mechanism which uses parallel connecting rods to hinge a plurality of parallel light absorbing bodies in parallel. The invention provides a follow device with short gearing chain, simple and reliable structure and accurate follow angle: each drive only feeds the light absorbing body to rotate several percent degrees or even a smaller angle uniformly. The invention has millions of evolvement proposals and wide application scope and can be widely used in a photovoltaic battery plate, a solar cooker, a flat plate heat collector, a solar furnace, a solar energy boiler and a solar energy utilization device to follow the sun.

The present invention discloses a portable solar cooker, belonging to the field of solar heat utilization. The solar cooker comprises an upper functional assembly, a lower control assembly and a rotary apparatus which are sequentially connected, wherein the upper functional assembly is configured to reflect sunlight, collect heat in a focusing manner and further heat water or foods, the upper functional assembly is closed to form a box body when being in a non-operative state, and the upper functional assembly is opened when being in an operative state; the lower control assembly is connected with the upper functional assembly, and makes the upper functional assembly be subjected to pitch adjustment; the lower control assembly is connected with the rotary apparatus, and the lower control assembly and the upper functional assembly are driven by the rotary apparatus to rotate so that tracking the sun is realized. The portable solar cooker disclosed by the present invention not only has functions of boiling water and cooking foods, but also has the advantages of facilitating carrying and tracking the sun, and can achieve full utilization of solar energy anytime and anywhere, thereby making the application of the solar energy be fully developed.

The invention discloses a wind energy and light energy combined power generation device which comprises main mechanisms such as a solar cooker, a Stirling engine, a flywheel, a drum gear coupler, overrun clutches, a vertical shaft fan and a power generator body. The wind and light combined power generator is characterized in that a power generation manner for utilizing the solar heat effect based on Stirling circulation is adopted, single-crystal-silicon and multi-crystal-silicon materials are completely replaced, production energy consumption is lowered, and pollution is reduced. A vertical shaft fan is used for replacing a wind wheel tower type power generator to overcome the defect that work cannot be done under strong wind, damage is not likely to happen, maintenance is easy, and the cost is low; a regenerator is additionally arranged in the Stirling engine so as to improve the utilization efficiency of heat energy, and the radiating efficiency is improved by additionally arranging a cooling fin on the outer portion of a cold air cylinder; the flywheel with the certain mass is used for storing and releasing angular kinetic energy to make the Stirling engine run more stably; and the problem that the rotating speeds of two power shafts are matched is solved through the overrun clutches.

The invention relates to a reflecting film and a manufacturing method as well as application of the reflecting film. The reflecting film comprises a substrate and a bottom liner surface and is characterized in that the substrate adopts a PET plastic film with high transparency; aluminum films are plated on both sides of the substrate; one surface of the substrate which is plated with the aluminum film is bonded with the bottom liner surface by oiliness pressure sensitive adhesive; a layer of silicone glass resin coating is coated evenly on another surface of the substrate which is plated with the aluminum film. The invention has the advantages that both sides of the substrate are plated with aluminum, thus having a high reflecting rate; if the aluminum film in one surface is scarified, the aluminum film in another surface can still reflect and the reflecting rate can reach more than 85 percent; the oiliness pressure sensitive adhesive has high viscosity and strong bonding force and can be used for more than three years; a reflecting layer can not be dropped off from the bottom liner surface; the surface coating hardness of the reflecting layer is more than 4H and the reflecting layer has strong friction resistance and weather resistance; the reflecting film used in a solar cooker is a new generation product of the solar cooker made by glasses previously, which has light weight, simple bonding and durable use. The reflecting film of the invention can not only be used in the solar cooker, but also be suitable for reflecting in a plurality of fields such as solar energy cooking ranges, vegetable greenhouses and fruit trees.

The invention to a solar energy using device. A vacuum heat accumulation solar energy water heater integrates two functions of solar energy absorption and hot water storage on a spherically illuminated water tank, increase heat efficiency by 31 times compared with the traditional calandria water heater, is added with a reflector to become a vacuum heat accumulation reflector sun-chasing solar energy water heater which increases heat efficiency by 140 times; and reflector sun-chasing does not need a motor, a reducer, commercial power and a battery. The reflector sun-chasing can be pushed by only needing a 12 volt 3 watt photo-cell as signal power source and water supply pressure. A reflection sun-chasing three functional cooker is the solar energy using device which integrates the solar cooker, the water heater and heating. A pneumatic reflector sun-chasing heating solar cooker has heating function and is suitable for environment without pressure water source.

The invention relates to a system for turning focused sunlight spots into parallel light capable of being transmitted at high density in any direction. At present, solar energy is mainly utilized in two modes, namely focusing sunlight and directly focusing heat, and utilizes solar panels to convert into electric energy. A solar cooker technology is an ideal technological case for focusing sunlight, but has lower power and can only work close to a focus so that the utilization of the solar energy and the development of a solar energy utilization enterprise in a focusing mode are limited. Sunlight at the focus in the solar cooker technology can be transferred to an indoor point for indoor watering and cooking, and the process can be repeated to transfer sunlight in other places to the point so as to multiply the power until limitless multiplication, therefore, sunlight transfer at the solar cooker focus turns to be a key. A half of a revolving paraboloid (namely a concave light-transferring head) solves an initial problem of transferring the sunlight at the focus and converts the focused sunlight at the focus into parallel light rays which can be parallel to a principal axis and can randomly change directions, and afterwards, a flat mirror is utilized to reflect the parallel light rays into the point. The focusing mode collects high energy and finally realizes solar power generation.

The invention discloses a coating method of condensing plate of solar cooker. Main processes are that a layer of UV-curing acrylic acid silicone as paint primer is sprayed on the condensing plate of solar cooker formed with the substrate of ABS engineering plastic; the condensing plate of solar cooker is smooth by ir light source in thermal radiation method directly; it is treated in UV-curing by ultraviolet lamp; reflective material made of high pure aluminium wire is preheated in vacuum coating machine and is vaporized by the flash evaporation process; UV-curing acrylic acid silicone dope is used as the protective film to spray on the reflective material; it is finished in UV-curing by ultraviolet. The condensing plate of solar cooker produced by the coating method is provided with high gloss, high attachment and high reflection.

The invention discloses a solar cooker and belongs to the technical field of solar. The solar cooker comprises a base, a solar oven, a level adjustment system, a pitching adjustment system and a control system, wherein the level adjustment system comprises a rotating shaft and a driving mechanism; the pitching adjustment system comprises a rod body and a pitching driving piece; the rod body is connected with the solar oven; the control system comprises photosensitive sensors and a controller; the photosensitive sensor comprises a first group of the photosensitive sensors which are horizontally arranged and a second group of the photosensitive sensors which are vertically arranged; the photosensitive sensors are electrically connected with the controller; and the controller is electrically connected with the driving mechanism and the rod body. According to the solar cooker, sunlight is sensed by the photosensitive sensors, signals are sent by the controller to control the running condition of the level adjustment system or the pitching adjustment system, so as to control the position of the solar oven, guarantee the sunlight to irradiate the solar oven from face side, improve sunlight energy accepted by the solar oven and reduce time needed by cooling food; and the controller automatically finishes the work and the precision is high.

The invention discloses a solar cooker and relates to the field of machinery. The solar cooker comprises a base, a vacuum tube, a fixing rack, a shell and a reflector. The base comprises a base plate, a cover plate and a support, wherein the cover plate is disposed on the base plate, one end of the cover plate is connected with one end of the base plate through a pin, the cover plate can rotate around the pin, and the support is disposed between the base plate and the cover plate and used for manually fixing the rotating angle of the cover plate. A heating cavity is arranged in the vacuum tube and used for cooking foods. The fixing rack is disposed on the cover plate. The vacuum tube is disposed on the fixing rack. The shell is disposed on two sides of the cover plate. The cover plate is movably connected with the shell. During a non-working state, the shell is closed, and during a working state, the shell is opened and positioned. The reflector is disposed on the inner surface of the shell and used for reflecting sunlight to the vacuum tube.

The invention provides a solar sewage treatment device, which comprises a sewage pool, a conduit, an evaporation container, a solar cooker, a pure water container, a cooling container and a circulating pump, wherein the evaporation container is arranged at the focus of the solar cooker; the circulating pump connects the evaporation container and the sewage pool through the conduit; the steam of the evaporation container is guided into the pure water container by the conduit; the pure water container is arranged in the cooling container; and cold water is accommodated in the cooling container. The solar sewage treatment device implements heating and evaporation by adopting solar energy, can reach extremely high distillation temperature, has low cost, and is suitable for continuous treatment of a large amount of sewage.

The invention provides a solar energy cooker system. A water feeding and steam pipeline is connected between a header and a steam separator. The lower portion in a cooking barrel, the lower portion in a cooking cabinet and the lower portion in a steaming cabinet are provided with electric heating pipes. One end of a fourth pipeline is communicated with a hot water tank, and the other end of the fourth pipeline is communicated with the steam separator and a solar energy collector. A cooker can be directly placed on the ground, a step and a support are omitted, and operation of kitchen staff is greatly facilitated. After a distilled water generator is modified, pollution is avoided, the maintenance frequency is extremely low, and water quality is better. The electric heating pipes are arranged at the bottom of a water returning pipeline, the bottom of the cooking cabinet, the bottom of the cooking barrel and the bottom of the steaming cabinet, the temperature of water in the system can be fast raised, and when it becomes cloudy suddenly in the cooking process, food can be cooked forcefully. Before water in the pipelines is not frozen, a valve is opened, so that water in the pipelines flows into a water tank, the water in the water tank is injected into the system again in the morning of the next day through a water pump, and therefore blocking, caused by freezing, of a circulation pipeline is avoided.

The invention discloses an auto-focusing system of a solar cooker, belonging to the technical field of clean energy. A central axis sleeve and a control box are fixed at a base plate, a horizontal rotation axis is inserted into the central axis sleeve, a mechanical leg or other horizontal rotation devices are fixed at the horizontal rotation axis, a luffing motion mechanism is fixed at the top end of the horizontal rotation axis, a luffing motion drive motor is arranged on a luffing motor mounting board at one side of a luffing motion bracket of the solar cooker, and a luffing rotation axis for mounting the solar cooker and a solar cell plate is propped in the bearing of luffing motion bracket. The invention adopts a brand-new mechanism and a motion mode, simultaneously, adopts the solar cell to trace the system power supply and keeps the synchronous sun tracing state of the solar cell and the solar cooker so as to facilitate the solar cell to play in full swing. When the solar cooker is unused or the light condition is poor, the system does not work to reduce energy consumption at utmost. The energy collected by the solar cell can be stored in a storage cell.

The invention discloses a concentrating photovoltaic-photo-thermal-wind power-thermoelectricity integrated system and belongs to the technical field of solar comprehensive utilization. The integrated system comprises a photovoltaic photo-thermal temperature difference power generation boiler, a concentrating type solar cooker, a solar cooker and boiler support, a ventilation duct, a wind power generating set, solar battery assemblies and a thermal insulation water bin. Solar cell pieces are arranged at the top and the bottom of the photovoltaic-photo-thermal temperature difference power generation boiler for photovoltaic power generation, the concentrating type solar cooker is used for collecting solar energy and reflecting the solar energy to a heat transfer alloy block in the center of the bottom of the photovoltaic-photo-thermal temperature difference power generation boiler, so that water in the boiler is heated, and the heated water automatically enters the thermal insulation water bin for thermal insulation. Meanwhile, the wind power generating set collects wind energy for power generation, the collected wind further cools the solar cell assemblies, and the solar battery assemblies also performs photovoltaic power generation. Solar energy and the wind energy are efficiently collected for power generation, so that comprehensive utilization of clean natural resources is greatly improved.

The invention discloses a new-energy streetlamp device. The new-energy streetlamp device comprises a Stirling engine, a base is arranged below the Stirling engine, a bearing platform is arranged at the outer side of the Stirling engine and fixedly connected with the base, a rotary plate is arranged in the center inside the Stirling engine, and a rotary shaft is fixedly installed in the center of the rotary plate; a fixing pillar is arranged at the left end of the rotary plate, a hot cylinder is arranged at the top of the Stirling engine, solar cookers are fixedly installed at the two sides ofa rack, and a hot piston is arranged inside the hot cylinder. The new-energy streetlamp device has the advantages that the structure is simple, the operation is simple, the Stirling engine is adoptedfor sufficiently utilizing heat energy in hot air and air conditioner condensate water of an outdoor air conditioner unit, and power is generated through the temperature difference between the hot airand the condensate water and supplied to a streetlamp for night lighting; moreover, the Stirling engine is modified so that the Stirling engine can receive potential energy in the hot air and secondarily use the condensate water, and the proposal of China for energy conservation and emission reduction is accorded with.

The invention provides a solar generator mainly consisting of a solar cooker, a heating device, an energy storage device and a semiconductor self-generating system. The semiconductor self-generating system mainly consists of a semiconductor temperature difference generating module, a heat conductive component and a radiator, wherein the radiator is provided with a favorable insulating protective layer, one end of the radiator is arranged in a cooling water tank, and the other end of is connected to a cool end of the semiconductor temperature difference generating module. The heating device is made of high-temperature-resistant compound fibre materials, provided with a coarse surface and located in the focus of the solar cooker; potassium chloride is filled in the heating device and is directly heated by sunlight collected by the solar cooker; one end of the heat conductive component is connected to the fused potassium chloride, and the other end is connected with the hot end of the semiconductor temperature difference generating module, and the voltage of the semiconductor temperature difference generating module is stored by the energy storage device. The invention has the advantages of heating and fusing salts by the thermal effects of solar energy to increase the temperature difference under the natural condition; and the generated electrical energy is stored in the storage battery and can be used charging.

Solar cooker of the concentrating type, using Compound Parabolic Concentrator type optics (2, 2') comprising a box (1), inside which all its accessories and cooking utensils can be carried; the box being essentially made of plastic compatible with the production of complicated curves characteristic of the referred optics. The present invention includes a version in which electrical energy is used as backup for days without sunshine. Its application extends to other areas beyond the cooking of foodstuffs, in particular to the pasteurisation of water, milk and other products and its usage as a drying system.

The invention discloses solar cooker comprising a base, a light gathering plate, a light gathering plate support and a vacuum tube. The base comprises a base plate, and a support assembly used for supporting the base plate; the supporting assembly includes a first supporting assembly and a second supporting assembly; the first supporting assembly is rotationally connected to one end of the base plate, and the second supporting assembly is rotationally connected to the base plate through a first connecting mechanism; the light gathering plate support is rotationally connected to the base plate, and the light gathering plate is rotationally connected to the light gathering plate support; the base plate is provided with a fixing frame, and the vacuum tube is arranged on the fixing frame and is located in the focal point of the light gathering plate. The solar cooker is simple in structure, convenient to carry and use and practical, is capable of utilizing solar energy completely and has high operating efficiency.

The invention discloses a solar cooker capable of automatically tracking the sun. The solar cooker comprises a light collecting plate, a main shaft, a gear assembly and an escapement mechanism, wherein the main shaft is connected with the bottom part of the light collecting plate and is capable of controlling the light collecting plate to rotate; the gear assembly is capable of controlling the main shaft to rotate; the escapement mechanism is capable of controlling the gear assembly to rotate. According to the scheme adopted by the solar cooker disclosed by the invention, the solar cooker is rotated according to a scheduled mode and time through the gear assembly and the escapement mechanism to track the sun, so manual regulation is not needed, and solar energy is utilized to the maximum degree; the solar cooker is simple in operation, light in weight, energy-saving and environmentally friendly, and good conditions are created for the promotion of the solar cooker.

The invention discloses a preparation method of an AAO photonic crystal based high-temperature-resistant ternary nano composite heat-absorbing coating. The coating prepared by adopting the method is simple in process operation, is 0.84-0.94 in absorptivity and 0.12-0.21 in emissivity and has high solar absorptivity. After being thermally treated at 100-600 DEG C, a sample coating is comparativelytable in absorptivity and emissivity. The coating is high in solar spectrum absorptivity, low in emissivity, extensive in material source, firm in binding force and good in resistance to high temperature. The coating can be applied in the field of solar water heaters, solar cooker heat collection, high-temperature power generation and seawater desalination.

The invention discloses a Stirling generator equipment with an inserted tube bundle regenerator, including a solar cooker, a Stirling machine, an inserted tube bundle regenerator, a flywheel, a drum-shaped gear coupling, and a generator and other major institutions. The key points of the technology are: adopting the power generation method based on Stirling cycle utilization of solar thermal effect, completely replacing monocrystalline silicon and polycrystalline silicon materials, reducing production energy consumption and pollution. The Stirling machine is equipped with a tube bundle regenerator to improve the utilization efficiency of heat energy, and the impact convective heat transfer is used to increase the convective heat transfer coefficient of the fluid across the tube bundle to strengthen the heat transfer. Install cooling fins outside the cold cylinder to improve heat dissipation efficiency. Using a flywheel with a certain mass to store and release angular kinetic energy makes the Stirling machine run more smoothly. The overrunning clutch is used to solve the problem of the speed mismatch of the two power shafts.

The invention relates to an unfolding and folding type solar cooker made from a flexible reflective film. The solar cooker comprises a support frame and a light condensing device used for reflecting solar light, wherein the light condensing device comprises an umbrella-shaped framework body with a recessed structure, the flexible reflective film used for reflecting the solar light and a fixing device; and the flexible reflective film, the fixing device and the umbrella-shaped framework body form a concave mirror capable of reflecting the solar light irradiated on the flexible reflective film and condensing the solar light at the focus. The unfolding and folding type solar cooker made from the flexible reflective film has the advantages that by using the detachable framework body and the light condensing device with unfolding and folding functions, space occupied by the solar cooker during storing and transporting is greatly reduced; and by using the flexible reflective film as a light condensing plate of the solar cooker, the weight of the solar cooker is greatly reduced. The unfolding and folding type solar cooker made from the flexible reflective film is light in weight, is convenient to disassemble and install, does not affect cleanliness and saves space during storing and transporting.

The invention provides an automatic phototaxis solar cooker to improve the utilization rate of solar energy and the power of the solar cooker. The solar cooker includes a reflective umbrella, a pot and stove frame and a bracket. The bracket includes a base, a vertical support rod and a horizontal angle adjusting motor used for driving the vertical support rod to rotate. A driving gear and a drivengear are rotationally installed on the top end of the vertical support rod through an inclined support rod. The driving gear is connected with a vertical angle adjusting motor installed on the inclined support rod. The reflective umbrella is erected on the driving gear and the driven gear through an arc toothed plate at the bottom thereof. The arc toothed plate is provided with arc grooves in thesides thereof. Guide rods are fixedly arranged on the top end of the vertical support rod. A guide roller extending into the corresponding arc groove is arranged at the end of each guide rod. A sunlight tracking sensor used for detecting the illumination angle of the sun is arranged in the central position of the front of the reflective umbrella. The sunlight tracking sensor, the horizontal angleadjusting motor and the vertical angle adjusting motor are connected with a control unit.

The invention is a heat storage multi-use solar cooker and overcomes the problems of poor stability, low productivity efficiency, inconvenient use and restricted application in the prior device, comprising the following components: a bracket (4) is connected with a heat collector (3) or with a heat exchanger (2); the heat collector (3) or the heat exchanger (2) is connected with a heat capacitor (1) directly or via a heat transmission tube (5); the output heat tube (5) is provided with a heat-resistant pump (6); the heat capacitor (1) is connected with a heat conducting disk via an output heat tube (20); the heat conducting disk is connected with a thermoelectric generator (7) or / and electrical appliance; a heat insulating layer (18) is mounted between the shell body (17) of the heat capacitor (1) and a high temperature resistant cylinder (19); the high temperature resistant cylinder (19) is provided with heat conducting gridding (11) or foamed metal, and output heat tube (20) or heat transmission tube (5); wherein, the heat conducting gridding is a stereo structure with gaps formed by heat conducting wires or heat conducting strips, and the gaps of the heat conducting gridding or foamed metal are full of heat storage materials.

This invention relates to a solar energy light focus solar range, especially a thin steel sheet positive parabola extra-axial light focus solar range that is drawn and molded from several(six) thin steel sheets. It includes positive parabola made of six thin steel sheets reflecting blocks; adjustable stand boiler support; elevation angle adjusting bar; crisscross rotating support; assembling type base. The boiler support is composed of upwards and downwards adjustable fulcrum bars and boiler ring capable of horizontal extension. The boiler support and reflecting face are separated. The base has three end frames capable of assembling and disassembling. Three ground nails or expansion screws are used to intensify the anti-wind capacity of solar range. This invention is adequate for high and low latitude areas. When the solar altitude is so large or small, the height and length of boiler support are adjusted so as to make the center of boiler ring close to the focus of reflecting face. This invention is convenient, light and small. It can be used to industrial production.

The invention relates to a small focus-fixed solar cooker. According to the small focus-fixed solar cooker, a rotary movable seat is arranged on a base and provided with a main shaft sleeve; a main shaft is arranged in the main shaft sleeve through a bearing; a reflection mirror is fixed to the end of the main shaft; a cooker body is arranged on the extending line of the main shaft. The small focus-fixed solar cooker is convenient to use and simple in structure, automatic tracking of the azimuth angle and manual adjustment of the elevation angle are combined, the focus is fixed to the cooker body on the crosspoint of the virtual axis (or a supporting shaft) of a slideway and the extending line of the main shaft, focusing is accurate, and the arrangement of the cooker body meets the requirements of ergonomics.

Disclosed are systems and methods to concentrate sunlight with inflatable enclosures to heat substances, including fluids and for cooking, and to provide concentrated sunlight for other uses. The system includes an inflatable sunlight concentrator (upper balloon), an inflatable cooking housing (bottom balloon), and a cooking container. When inflated, the upper balloon has a substantially cone-shape and concentrates sunlight towards the bottom balloon. The bottom balloon may be of various shapes and may concentrate sunlight towards the cooking space. Each balloon is less than two ounces and can be folded into a small pocket-sized package when it is deflated. The cooking space may be a thermal bag, a box, or an insulated space.