Solar cooking apparatus

• US 10,222,094 B2
• Filed: 04/18/2016
• Issued: 03/05/2019
• Est. Priority Date: 04/17/2015
• Status: Active Grant

• Current Assignee: GoSun Inc.
• Original Assignee: Matthew Gillespie, Nathan Maggard
• Inventors: Sherwin, Patrick
• Primary Examiner(s): Shirsat, Vivek
• Application Number:
  US15/131,177
• Publication Number:
  US 20160305691A1
• Time in Patent Office: 1,051 Days
• Field of Search: 126573-577, 126600-603, 126605-606, 126681-682, 126692, 126694, 126627, 126624
• CPC Class Codes: F24S 20/30 Solar heat collectors for heating objects, e.g. solar cookers or solar furnaces
• CPC Class Codes: F24S 23/74 with trough-shaped or cylindro-parabolic reflective surfaces
• CPC Class Codes: F24S 40/10 Protective covers or shrouds; Closure members, e.g. lids transparent coverings F24S80/50
• CPC Class Codes: F24S 50/20 for tracking
• CPC Class Codes: Y02B 10/20 Solar thermal
• CPC Class Codes: Y02B 40/18 using renewables, e.g. solar cooking stoves, furnaces or solar heating
• CPC Class Codes: Y02E 10/40 Solar thermal energy, e.g. solar towers

Abstract

The present invention relates to a solar cooking apparatus, comprising: a first solar reflector; a second solar reflector; a solar collection element; and a solar collection element holder, wherein the first solar reflector and the second solar reflector are concave, and symmetrically arranged and aligned with a solar collection element axis, the reflectors having a up to a 360° range of motion around a plane perpendicular to the solar collection element axis, and focusing radiation at the solar collection element, which rapidly heats when the first and/or second solar reflectors are in an opened position, the first and second solar reflectors shield the solar collector when in a closed position. The solar cooking apparatus is adjustable and, in some embodiments, portable.

Claims

1. A solar cooking apparatus, comprising:

a first solar reflector;

a second solar reflector;

a solar collection element; and

a solar collection element holder, wherein

the first solar reflector and the second solar reflector are concave, and symmetrically arranged and aligned with a solar collection element axis, each reflector having a range of motion on a plane perpendicular to the solar collection element axis, and focusing radiation at the solar collection element from a reflective surface when the first and/or second solar reflectors are in an opened position toward a solar radiation source, the first and second solar reflectors shield the solar collector when in a closed position, and the solar collection element holder having a rotatable collar system attached to the solar collection element and first and second solar reflectors.

2. The solar cooking apparatus of claim 1, wherein the solar collection element is an evacuated tube-in-tube comprising:

an inner tube having an inner tube diameter, an inner tube length, an inner tube open end, an inner tube closed end, an interior surface enclosing an interior space, and an exterior surface, the interior and exterior surfaces extending the inner tube length, wherein the exterior surface comprises an anti-reflection layer, an absorbance layer, and an infrared-reflection layer; and

the outer tube having an outer tube diameter, an outer tube length, an outer tube open end, and an outer tube closed end, wherein the outer tube diameter and the outer tube length are both greater than the inner tube diameter and the inner tube length, wherein

the inner tube is fixed inside of the outer tube and sealed between the inner tube open end and outer tube open end to form a hollow space extending the length of the exterior tube under vacuum pressure between the exterior wall of the inner tube and the outer tube.

3. The solar collection element of claim 2, comprising borosilicate glass or Vycor®

glass.

4. The solar cooking apparatus of claim 1, the first reflector and the second reflector are connected upon at least one solar reflector hinge attached to the collar system.

5. The solar cooking apparatus of claim 1, the first reflector and the second reflector having up to 360°

rotation around the solar collection element.

6. The solar cooking apparatus of claim 5, having a solar angle positioning device to reversibly fix the first reflector and the second reflector in an open position relative to solar collection element and solar radiation source.

7. The solar cooking apparatus of claim 1, the first reflector and the second reflector are each parabolic.

8. The solar cooking apparatus of claim 1 having a cooking tray being attached to an insulated handle cap capable of sealing the solar collection element.

9. The solar cooking apparatus of claim 8, having a rail system inside of the solar collection element capable of moving the cooking tray in and out of the solar collection element.

10. The solar cooking apparatus of claim 8, the cooking tray having at least one cooking container optionally fitted with a drip tray system.

11. The solar cooking apparatus of claim 2, wherein the solar collection element is enclosable with an insulated handle cap to form a seal between a cooking tray and the solar collection element.

12. The solar cooking apparatus of claim 1, wherein the first solar reflector and/or the second solar reflector are comprised of at least one of anodized aluminum, stainless steel, chrome, mylar, silver film, plastic film or metallic paint.

13. The solar cooking apparatus of claim 1, having an alternative energy source within the inside of the solar collection element.

14. The solar cooking apparatus of claim 13, wherein the alternative energy source is an electric heating element or a thermal battery.

15. The solar cooking apparatus of claim 1 having at least one sensor.

16. The solar cooking apparatus of claim 1 having a condensate collection system.

17. The solar cooking apparatus of claim 1 having a light source within the solar collection element.

18. The solar cooking apparatus of claim 1 being portable.

19. The solar cooking apparatus of claim 1, the first reflector and the second reflector are each connected to the collar system by at least one latch arm.

20. A solar cooking apparatus, comprising:

a first solar reflector;

a second solar reflector;

a solar collection element; and

a solar collection element holder, wherein

the first solar reflector and the second solar reflector are concave, and symmetrically arranged and aligned with a solar collection element axis, each reflector having a range of motion on a plane perpendicular to the solar collection element axis, and focusing radiation at the solar collection element from a reflective surface when the first and/or second solar reflectors are in an opened position toward a solar radiation source, the first and second solar reflectors shield the solar collector when in a closed position, and the solar collection element holder having a rotatable collar system attached to the solar collection element and first and second solar reflectors upon one or more latch arms, the first reflector and the second reflector having up to 360°

rotation around the solar collection element.