Portable type solar heat cooker assembly

• US 4,442,828 A
• Filed: 11/05/1982
• Issued: 04/17/1984
• Est. Priority Date: 11/06/1981
• Status: Expired due to Term

• Current Assignee: Shiroki Corporation (Aisin Corp.)
• Original Assignee: Nitto Kohki Company Limited
• Inventors: Mikiya, Toshio, Takeuchi, Hirosato
• Primary Examiner(s): Scott, Samuel
• Assistant Examiner(s): Green, Randall L.
• Application Number:
  US06/439,608
• Time in Patent Office: 529 Days
• Field of Search: 126/451, 126/438, 126/443, 126/901, 215/12 A, 215/13 R, 248/130, 248/133, 248/136, 248/201, 248/311.2
• US Class Current: 126/681
• CPC Class Codes: F24S 10/45 the enclosure being cylindrical
• CPC Class Codes: Y02B 40/18 using renewables, e.g. solar cooking stoves, furnaces or solar heating
• CPC Class Codes: Y02E 10/44 Heat exchange systems
• CPC Class Codes: Y10S 126/907 Absorber coating

Abstract

A portable type solar heat cooker assembly including a cooking glass tube comprising an outer bottomed glass tube and an inner bottomed glass tube coated with a selective absorption film showing a high absorptivity in the solar radiation spectrum zone and a low absorptivity in the heat radiation spectrum zone. The inner tube is coaxially inserted into the outer tube and hermetically sealed together at their open ends, with a space therebetween being evacuated to vacuum. A case is provided to open on hinges and to receive the cooking glass tube at its central portion. A curved reflector is bisymmetrically provided on the case, which forms a reflex mirror for the solar rays when the case is opened. A tiltable stand attached to the outside of the case is provided to support the case in an inclined state.

Claims

1. A portable type solar heat cooker assembly including a cooking glass tube comprising:

an inner tube being constructed of glass having a closed bottom and an open end;

a selective absorption film having a high absorptivity in the solar radiation spectrum zone and a low absorptivity in the heat radiation spectrum zone being coated on an outer surface of said inner tube;

an outer tube being constructed of glass having a closed bottom and an open end and having a predetermined diameter for permitting said inner tube to be coaxially inserted therein;

a spacer being positioned on said inner tube for maintaining the coaxial spaced relationship between said inner and outer tubes;

said inner and outer tubes being hermetically sealed together at their open ends with said space therebetween being evacuated;

a lid removably positioned on said open end of said inner and outer tubes for permitting insertion of a substance into said inner tube to be cooked and for closing the open end of the inner tube;

a case having a predetermined length and width and a cover hinged thereto, said cooking glass tube being operatively positioned and extending along the length of the case;

said cover being a single element hinged to one of the width sides of said case and said cooking glass tube being hinged to said case and said cover for automatic movement to a central position when said cover is opened;

a curved reflector symmetrically positioned in said case forming a reflex mirror for the solar rays when said case is opened; and

a collapsible stand attached to an outer surface of said case for adjustably positioning said case in an inclined state.

2. A portable type solar heat cooker according to claim 1, and further comprising two cooking glass tubes being positioned in a side-by-side arrangement within said case.

3. A portable type solar heat cooker according to claim 1, wherein said lid includes an air vent.

4. A portable type solar heat cooker according to claim 1, wherein said lid includes a pressure relief valve.