Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
  • A47J27/00—Cooking-vessels
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
  • A47J27/00—Cooking-vessels
  • A47J27/04—Cooking-vessels for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
  • F24S10/00—Solar heat collectors using working fluids
  • F24S10/40—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
  • F24S10/45—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors the enclosure being cylindrical
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
  • F24S10/00—Solar heat collectors using working fluids
  • F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
  • F24S10/75—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
  • F24S10/753—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations the conduits being parallel to each other
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
  • F24S10/00—Solar heat collectors using working fluids
  • F24S10/90—Solar heat collectors using working fluids using internal thermosiphonic circulation
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
  • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
  • F24S20/30—Solar heat collectors for heating objects, e.g. solar cookers or solar furnaces
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
  • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
  • F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
  • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
  • F24S20/50—Rollable or foldable solar heat collector modules
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
  • F24S60/00—Arrangements for storing heat collected by solar heat collectors
• • 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
  • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
  • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
  • Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
  • Y02A40/924—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation using renewable energies
  • Y02A40/926—Cooking stoves or furnaces using solar heat
• • 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
  • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
  • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
  • Y02B40/18—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers using renewables, e.g. solar cooking stoves, furnaces or solar heating
• • 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

Definitions

• the present disclosure relates to solar heat application field, especially related to solar cooking appliances to cook the food in the solar heat collector.
• the solar power on a unit earth area is not very large.
• the solar radiation intensity is varied from North to South and from morning to afternoon. It depends on the weather and is also different in four seasons, so that to develop an economic solar cooking appliance is always a challenge and need continue efforts.
• the present disclosure absorbs the historic experience and combines the new solar water heating technologies and developed a set of economic and practicable solar cooking appliances.
• the object of this disclosure is to improve the existing technologies and provide a set of solar cooking appliances that is economy, easy to manufacture and use and high efficient.
• the invention takes following steps to overcome the difficulties of applying solar energy for food cooking:
• a light reflector focuses the surrounding light to the cooking appliances
• a sundial indicates the light direction, an adjustable and rotatable fixing and supporting trestle allows to receiving the highest solar power;
• a electric power supply provides a backup power source when the solar power is not enough. Further more, the solar cooking appliances also provide backup or energy storage equipment at low electricity price period for cooking at electric power outage.
• a set of solar cooking appliances comprising: a solar heat collector wherein the solar heat is collected and stored, further more food is cooked or heated inside, said solar heat collector having a removable part for covering during cooking; the heat storage and conducting material that partially filled in said solar heat collector; a set of solar cooking utensils, each said utensil having the size and shape to fit the internal size and shape of the solar heat collector for a closed heat connection with the inner wall of said solar heat collector and also with said heat storage and conducting material within said solar heat collector; each said utensil having a removable part for closing said utensil during cooking; an utensil is located in said solar heat collector during cooking; and the necessary accessories that including a fixing and supporting trestle with a rotatable base and adjustable incidence angle that arrange and support the each part of the solar cooking appliances at a proper situation; the light reflecting object and a cone bar attached to the solar heat collector perpendicularly to show the angle
• the said solar heat collector is a evacuated-tube solar heat collector; or a group of modular evacuated-tube solar heat collectors that mounted in a certain shape, e.g. in parallel row, in full or partial cone-shaped column, etc;
• the said heat storage and conducting material can be a solid material, or a liquid material or a chemical or change head storage materials, or the combination of two or more materials mentioned above.
• the said heat conducting material can be a heat tube, or a heat conductor. For safety reason, transparent cover or evacuated toughened-glass tube solar heat collector are suggested.
• each of said utensil is a cylinder container made of stainless steel, that is located in an evacuated-tube solar heat collector, having a removable and detachable handle at the inner wall; said container having a diameter near but not bigger than the inner diameter of said evacuated-tube solar heat collector; a pleated structure on the wall of said container from the top to the bottom to provide a gap and patch for air exchange and allow a minor adjustable diameter for said container.
• These utensils can be a solar coffee/tea maker, a steamer, a solar cooking fryer; a cooking wok or pot, a boiler, a cooking pan etc.
• a set of solar cooking appliances that mainly use the solar heat, but use electricity as a backup, comprising, a solar heat collector wherein the solar heat is collected and stored, further more food is cooked or heated inside, said solar heat collector having a removable part for covering during cooking; the heat storage and conducting material that partially filled in said solar heat collector; a set of solar cooking utensils, each said utensil having the size and shape to fit the internal size and shape of the solar heat collector for a closed heat connection with the inner wall of said solar heat collector and also with said heat storage and conducting material within said solar heat collector; each said utensil having a removable part for closing said utensil during cooking; an utensil is located in said solar heat collector during cooking; and the necessary accessories that including a fixing and supporting trestle with a rotatable base and adjustable incidence angle that arrange and support the each part of the solar cooking appliances at a proper situation; the light reflecting object and a cone bar
• characteristic parameter e.g. timing, temperature, pressure, moisture etc.
• Fig. 1 is a schematic diagram illustrating a evacuated-tube solar cooking appliances in vertical section and cross section view
• Fig. 2 is a set of solar cooking appliances is illustrated schematically in a perspective view
• FIG. 3 illustrates schematically a set of exemplary solar heat collectors in vertical section view
• FIG.1 an evacuated-tube solar cooking appliances are illustrated in vertical section and cross section view during use.
• a set of solar cooking appliances 100 includes a solar heat collector 110, the heat storage and conducting material 120, a heat conducting medium 121, a solar cooking utensil 130, a removable part 114 of 110 and a removable part 131 for 130, and a electric heat element 150 with power supply.
• Solar heat collector may be any kind of solar heat collector that can heat the heat storage and conducting material 120 to the temperature higher than the water boiling temperature.
• the solar heat collector 110 is an evacuated-tube solar heat collector. It may also is a group of modular evacuated-tube solar heat collectors that mounted in a certain shape, e.g. in parallel row, in full or partial cone-shaped column as its one of the examples shown in Fig 2.
• the solar heat collector 110 has a removable part 114 with two holes 1141 and 1142.
• the hole 1141 is a path of power cable and air.
• the holel 142 is to continue the hole 1311 for releasing of cooking steam.
• the evacuated-tube solar heat collectors 110 has transparent outer layer 111 and inner layer 112. It is evacuated in between.
• the inner layer 112 has a heat absorbing coating that does not show in the Fig 1.
• the evacuated-tube solar heat collector 110 has the same material and manufacture processing as the evacuated-tube solar heat collector that used for solar water heating. But the evacuated-tube solar heat collector used in solar cooking has a larger diameter and a shorter length comparing to the regular evacuated- tube.
• the evacuated-tube solar heat collector 110 is made of glass. In case the glass tube is broken, the glass piece is dangers for the user. So the solar heat collector has a transparent plastic cover for safety reason, (not shown in Fig. 1).
• the transparent plastic cover can be either the mantles for each tube or a protective cover for an entire collector panel. But the plastic protective mantles may reduce the efficiency of the solar heat collector. So an evacuated toughened-glass tube solar heat collector is a better solution.
• the heat and conducting material 120 in this case is salt or quartz sand for storing the solar heat and transferring heat to the cooking utensil 130.
• the materials can be used as the solar heat storage and conducting material.
• they are solid materials such as salt and sand, liquid material, such as water and oil including cooking oil and petroleum products; phase change material, such as paraffin and metals.
• phase change material such as paraffin and metals.
• the cook takes place in the tube wherein utensil is located, so the food safety needs to put special attention.
• metal or alloy conductors and heat tube are suggested.
• Fig.1 there is another heat conducting material 121.
• this is a copper conductor in T shape inserted in the heat storage and conducting material 120 for faster transferring the solar heat to the cooking utensil 130.
• the conductor 121 can be any other heat conductivity conductor or a heat tube.
• the heat conducting material 121 is not a necessary component. In many cases, without the heat conducting material 121, the solar cooking appliances work well.
• the cooking utensil 130 is a cylinder container located inside of solar heat collector 110 upper the salt or sand 120. It made of stainless steel.
• the cooking utensil 130 has a removable part 131 with a hole 1311 , it is a stopper inserted in the cooking utensil 130.
• the utensil has a diameter near but not bigger than the inner diameter of the evacuated-tube solar heat collector 110.
• a pleated structure 133 is on the wall of the container from the top to the bottom to provide a gap and patch for air exchange and power cable 151. Furthermore it allows a minor adjustable diameter for the container 130.
• the cooking utensil 130 further includes a removable and detachable handle 135 at the inner wall for removing the utensil 130 from the solar heat collector 110.
• the utensil 130 is a food steamer. Three layers of steam basket are arranged in the utensil upper the water in the bottom. The food is cooked on the steam basket.
• the cylinder container i.e. the utensil 130
• the cylinder container can be many kinds of the utensils.
• second container can have water and coffee or tea for cooking. It is a solar coffee/tea maker.
• Third container can have a wire mesh container to hold food when frying and drain them after cooked. It is a solar cooking fryer.
• Fourth container can have a whisker net made of several curved and intersecting steel wires used to press the food sheets close to the inner wall of container for roasting or baking.
• Fifth container can back and roast breads and cookies. Of cause, if in the container food and water are arranged for braising or boiling. It is a cooking wok or pot.
• a removable part 114 covers the top of solar heat collector 110. It has two holes 1141 and 1142.
• the first hole 1141 connects to said gap and path for air exchange and power cable 133.
• the second hole 1142 continues the hole 1311 in the stopper 131 of the container 130.
• the stopper may be a plant fibril cork with an air gap or a hole.
• the electric heat element 150 with power supply is a very low power electric heat element. It located under the cooking utensil 130 and within heat storage and conducting material 120.
• a power cable 151 has very high resistive heat temperature that connects the electric heat element 150 to power supply plug 152 outside of the solar heat collector 110, through the path formed by a pleated structurel33 on the walls of the utensil 130.
• the electric heat element 150 may further includes a measuring, indicating and controlling systems for the solar cooking appliance's operating characteristic parameter, e.g. timing, temperature, pressure, moisture etc. These equipments are not shown in Fig. 1.
• the electric heat element with power supply can be removed from the set of cooking appliance. In this case the set of solar cooking appliances is still a complete cooking appliances that use solar heat as only energy source.
• Fig. 3 shows the solar heat collectors without electric heat element.
• a set of solar cooking appliances 200 is illustrated schematically in a perspective view.
• Five evacuated tube solar heat collector 201, 202, 203, 204 and 205 are mounted in a parallel raw.
• a fixing and supporting trestle 206 arranges and supports the five solar heat collectors at the proper locations and situations.
• the movable support 207 allows the adjustment of the incidence angle of the solar heat collector 210 to the sunlight.
• Four wheels 241, 242, 243 and 244 are installed in the four bottom corners of the supporting trestle 206 for adjust the direction of the solar heat collector 210. (243 and 244 are not shown in Fig.2).
• a sundial (not shown in Fig. 2) is a cone bar. It attaches to the solar heat collector 210 perpendicularly for indicating the incidence angle of sunlight;
• a light reflecting object (not shown in Fig. 2) is equipped under the evacuated- tube for focusing the surrounding sun light to the solar heat collector;
• FIG. 3 a set of exemplary solar heat collectors are illustrated schematically in vertical sections.
• Fig. 3 A is a schematic vertical section view of an evacuated-tube solar heat collector partially filled with liquid heat storage and conduction material, e.g. water or oil. In some cases, water can also be a heat transferring medium for food cooking.
• liquid heat storage and conduction material e.g. water or oil.
• water can also be a heat transferring medium for food cooking.
• Fig. 3 B is a schematic vertical section view of an evacuated-tube solar heat collector partially filled with solid heat storage and conduction material, e.g. ore stone or turves.
• solid heat storage and conduction material e.g. ore stone or turves.
• Fig. 3 C is a schematic vertical section view of an evacuated-tube solar heat collector partially filled with sand and having a heat tube or a heat conductor as the heat transferring medium.
• Fig. 3 D is a schematic vertical section view of an evacuated-tube solar heat collector partially filled with a combination of solid and liquid heat storage and conducting materials, e.g. quartz sand and cooking oil;
• Fig. 3 E is a schematic partial vertical section view of a group of modular evacuated-tube solar heat collectors that mounted in a vertical parallel raw;
• Fig. 3 F is a schematic partial vertical section view of a group of modular evacuated-tube solar heat collectors that mounted in a horizontal parallel raw;

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Sustainable Energy (AREA)
• Thermal Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Combustion & Propulsion (AREA)
• Physics & Mathematics (AREA)
• Sustainable Development (AREA)
• Food Science & Technology (AREA)
• Dispersion Chemistry (AREA)
• Cookers (AREA)
• Frying-Pans Or Fryers (AREA)
• Apparatus For Making Beverages (AREA)
• Photovoltaic Devices (AREA)

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Cited By (5)

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Citations (2)

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• 2009
  • 2009-07-23 CA CA2673703A patent/CA2673703C/en not_active Expired - Fee Related
• 2010
  • 2010-07-19 BR BR112012001569-9A patent/BR112012001569A2/pt not_active Application Discontinuation
  • 2010-07-19 JP JP2012520873A patent/JP5650214B2/ja not_active Expired - Fee Related
  • 2010-07-19 EP EP10801821.9A patent/EP2459939B1/en not_active Not-in-force
  • 2010-07-19 IN IN1474DEN2012 patent/IN2012DN01474A/en unknown
  • 2010-07-19 KR KR1020127004553A patent/KR101842287B1/ko not_active Expired - Fee Related
  • 2010-07-19 EA EA201200169A patent/EA023531B1/ru not_active IP Right Cessation
  • 2010-07-19 AP AP2012006137A patent/AP2012006137A0/xx unknown
  • 2010-07-19 MX MX2012000985A patent/MX351140B/es active IP Right Grant
  • 2010-07-19 CN CN201080033195.XA patent/CN102597649B/zh not_active Expired - Fee Related
  • 2010-07-19 WO PCT/CA2010/001119 patent/WO2011009200A1/en not_active Ceased
• 2012
  • 2012-01-27 ZA ZA2012/00694A patent/ZA201200694B/en unknown

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