Method and device for heating sealed cooked food in dish by microwave

A tray and microwave technology, applied in microwave heating, electric heating devices, food heating containers, etc., can solve problems such as inapplicability

Inactive Publication Date: 2003-12-03
TOPS FOODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It turns out that this is not applicable

Method used

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  • Method and device for heating sealed cooked food in dish by microwave
  • Method and device for heating sealed cooked food in dish by microwave
  • Method and device for heating sealed cooked food in dish by microwave

Examples

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Embodiment Construction

[0030] Inside the tubular autoclave 1 is a conveyor belt 2 with an upper run 2A and a lower run 2B. Tray 3 is placed on the upper return section 2A, and tray 3 has a portion of rice to be heated in grids 4, 5, 6 placed on tray 3. Like this, can put meat and seasoning in grid 4, put potato or pasta in grid 5, put vegetables in grid 6.

[0031] The waveguides 7 , 8 protrude laterally into the autoclave 1 , to whose flange 9 a microwave generator (not shown) is connected. The waveguide 7 is longer than the waveguide 8 . Both waveguides have openings 10 at their ends, from which microwaves are output. Here, the openings 10 in the long waveguide 7 are used to heat the tray grid 4 where the meat and spices are placed, while the openings 10 in the short waveguide 8 are used to heat the grids 5 and 6 in the tray 3 where the pasta, potatoes and vegetables are placed .

[0032] The opening 10 is arranged upwards immediately below the portion tray 3 with the portion to be heated. A ...

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PUM

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Abstract

The invention relates to a method and a device for microwave-heating prepared meals sealed in trays, in which the trays are placed in an autoclave into which microwaves from microwave generators are coupled and in which the trays are moved back and forth as they are being processed. It is the object of the invention to achieve appropriate, even heating of the different products on each tray and to prevent both hot spots and cold spots. The invention lies in the fact that the microwave generators are disposed at the side of the autoclave and are each connected to a waveguide arranged in the autoclave and comprising upwardly directed decoupling openings immediately beneath the tray, the distance between the decoupling opening and the tray to be heated being less than one-half wavelength. What is achieved in this manner is that the foods deposited on the tray are first heated from below and the heat rises from bottom to top. This prevents overheating and burning on the surface. When the water in the foods is heated to such an extent at individual sites that steam forms, this occurs in the lower layers, and the steam must then pass through the cooler upper layers and loses its intrinsic heat as it does so by relinquishing it to these upper layers, thus preventing overheating of individual locations on the upper surfaces of the foods and bursting of the tray seal.

Description

technical field [0001] The present invention relates to a method and apparatus for heating cooked food products sealed in a tray using microwaves, wherein the tray is placed in an autoclave into which microwaves are fed from a microwave generator; The pallet moves back and forth. Background technique [0002] Such a method and such a device are known from EP 0 347 623 A1. In this document, the inner space of the upper part of the autoclave is filled by the diffusion of microwave energy to carry out the necessary heating of the food placed on the tray in portions. Microwave generator so that the waveguide leading from the microwave generator into the autoclave is aligned with the surface of the food placed on the tray, while the other waveguides on the sides of the autoclave have their outlets at a greater distance from the bottom of the tray aligned with each other. [0003] In operations for the processing and handling of cooked food products sealed in trays, portions of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B6/68A23L3/01A23L5/10B65D81/34H05B6/72H05B6/78H05B6/80
CPCB65D2581/3425A23L3/01A23L1/0128B65D81/3453H05B6/782A23L5/15
Inventor R·托普斯
Owner TOPS FOODS
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