Foods and beverages: apparatus – Subjecting food to an enclosed modified atmosphere
Patent
1972-09-18
1978-01-03
Jenkins, Robert W.
Foods and beverages: apparatus
Subjecting food to an enclosed modified atmosphere
99483, 126369, A01J 1104
Patent
active
040660117
ABSTRACT:
Apparatus for thawing frozen food without cooking by producing a homogeneous mixture of steam and air with a dewpoint of 170.degree. F or lower and a mixture temperature below 212.degree. F, external to a thawing chamber, and forcing the steam-air mixture to flow towards the top and bottom surfaces of frozen food supported in the thawing chamber.
Apparatus for reconstituting frozen food in three distinctly different steps:
1. A hot gas heats a food chamber to the serving temperature of food. The food chamber has a multiplicity of apertures positioned in the top and bottom walls of the chamber.
2. Water is vaporized by adiabiatic transformation of a portion of the sensible heat in the hot gas to the latent heat of the water vapor. The water vapor is then intermixed externally to the food chamber with the hot gas in order to produce a vapor aeriform gas which has a temperature substantially higher than its dewpoint. The vapor aeriform gas is forced into the chamber apertures in order to create turbulent jets which flow normal to the top and bottom surfaces of the frozen food positioned within the food chamber. The food is heated to the dewpoint of the vapor aeriform gas by vapor condensation primarily, thereby leaving the condensate on the food surface.
3. The food is then heated to the serving temperature by the sensible heat of the vapor aeriform gas wherein the condensate is removed by vaporization.
REFERENCES:
patent: 2944805 (1960-07-01), Nesbitt et al.
patent: 2980099 (1961-04-01), Klemm
patent: 3066213 (1962-11-01), Webber
patent: 3494305 (1970-02-01), Pachyn
Jenkins Robert W.
Siegemund Ralf H.
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