Pasteurization of convenience meals in hermetically sealed containers

    公开(公告)号:US12193462B2

    公开(公告)日:2025-01-14

    申请号:US17420353

    申请日:2019-04-01

    Inventor: Marcel Mallah

    Abstract: Apparatus and method for pasteurizing food products and ready meals in hermetically sealed packages (22) by means of microwaves, comprising a microwave chamber (14); a lower conveyor belt (20) for the packages (22); an upper conveyor belt (18), extending substantially horizontally and vertically movable, and a microwave source (16) located below the lower conveyor belt (20), the microwave chamber (14) being under atmospheric ambient pressure. The apparatus comprises a cooling plate (10) in close contact with the upper conveyor belt (18) so that during microwave heating the top of the package (22) is cooled to below the condensation point of water vapor and overpressure in the package is avoided.

    CONTROL METHOD FOR A HEATING DEVICE AND A HEATING DEVICE

    公开(公告)号:US20240422869A1

    公开(公告)日:2024-12-19

    申请号:US18702270

    申请日:2022-09-28

    Abstract: A heating device and control method therefor. The device includes a cylinder for placing an object to be processed and an electromagnetic wave generating system for generating electromagnetic wave signals to heat the object. At each preset time interval, the electromagnetic wave generating system is controlled to adjust the frequency of the generated electromagnetic wave signal within a preset selectable frequency range, and ensure the system meets a preset matching condition. The frequency of the signal that meets the preset matching condition each time is recorded, and the change amount in frequency of the signal that meets the preset matching condition from before the preset number of matches to the current match is calculated. Operation of the system is terminated when any one of preset termination conditions is met. The preset termination conditions include the change amount being less or equal to a preset change threshold, enabling the cessation of heating of food at a state desired by the user, particularly suitable for food defrosting.

    MONITORING MICROWAVE OVEN LEAKAGE TO ESTIMATE FOOD TEMPERATURE AND FOOD COMPOSITION

    公开(公告)号:US20240365444A1

    公开(公告)日:2024-10-31

    申请号:US18577619

    申请日:2022-07-08

    CPC classification number: H05B6/705 H05B6/6432 H05B6/6455 H05B6/686

    Abstract: Described herein are methods for determining the temperature and nutrient content of items heated in a microwave oven. An example method of determining the temperature of the item includes receiving item information; receiving a trained water model; measuring, by an antenna, an emission value from the exterior of the microwave; determining, the power flow into the item based on the trained water model, the item information, and the emission value; and estimating, by the trained water model, a temperature change of the item. An example method of determining the nutrient content includes receiving item information; receiving a trained water model; measuring, by an antenna, an emission value from the exterior of the microwave; determining an emission spectrum from the emission value; and determining, using the emission spectrum, the item information, and the trained water model, a nutrient profile of the item.

    Method for operating a domestic cooking appliance and domestic cooking appliance

    公开(公告)号:US12120804B2

    公开(公告)日:2024-10-15

    申请号:US17287547

    申请日:2019-11-04

    CPC classification number: H05B6/687 F24C7/087 H05B6/6455 H05B6/725

    Abstract: In a method for treating food in a food handling device with a parameter configuration a measured value distribution of a surface property of the food is determined after expiration of the period of time by means of a sensor. A pattern of change is calculated from a comparison of the p-th measured value distribution with a measured value distribution determined previously. An assessment value Bq which represents a difference between a deviation of a target distribution from the measured value distribution and a deviation of the target distribution from a prediction pattern is calculated for all patterns of change stored hitherto. The prediction pattern is formed by superimposing the measured value distribution with the respective pattern of change, and the parameter configuration is set for which the assessment value Bq meets at least one predetermined criterion.

    System and method for heating an item in a microwave oven

    公开(公告)号:US12022597B2

    公开(公告)日:2024-06-25

    申请号:US17620915

    申请日:2020-06-22

    CPC classification number: H05B6/6447 H05B6/68 H05B6/72 H05B6/76

    Abstract: Provided is a system and method for heating an item in a microwave oven. The method includes capturing, with at least one electromagnetic field sensor, at least one electromagnetic field measurement of a microwave chamber, each electromagnetic field measurement of the at least one electromagnetic field measurement corresponding to a region in the microwave chamber, generating an electromagnetic field map of the microwave chamber based on the at least one electromagnetic field measurement, capturing, with at least one sensor, a plurality of thermal measurements of the item being heated in the microwave chamber, each thermal measurement of the plurality of thermal measurements corresponding to a region on the item, and controlling at least one of a position of the item and the electromagnetic field while the item is being heated in the microwave chamber based on the electromagnetic field map and the plurality of thermal measurements.

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