A thawing method for a thawing device includes: generating a radio frequency signal; acquiring the radio frequency signal; an upper electrode plate and a lower electrode plate of the thawing chamber generating, according to the radio frequency signal, radio frequency waves having a corresponding frequency in a thawing chamber and thawing an object to be processed, obtaining voltages and currents of the incident wave signal and reflected wave signal, and determining a thawing progress of the object to be processed.

The invention relates to an apparatus for fast and homogeneously heating a liquid product to a heating temperature by means of resistive heating, the apparatus comprising at least two vertically mounted, longitudinal, heating chambers that are arranged in series.

The invention further relates to a process for fast and homogeneously heating a liquid product to a heating temperature by means of resistive heating in such apparatus comprising (a) continuously supplying the liquid product to the first heating chamber in series and flowing the liquid product continuously through the at least two heating chambers; (b) continuously generating an electrical current through the liquid product flowing through the heating chambers by continuously applying an electrical potential over each heating chamber, wherein the direction of the current is continuously alternated with a frequency of at least 500 Hz, to obtain heated liquid product; and (c) continuously discharging heated liquid product from the last heating chamber in series, wherein the liquid product has an electrical conductivity of at least 0.03 S/m.

The invention relates to an apparatus for fast and homogeneously heating a liquid product to a heating temperature by means of resistive heating, the apparatus comprising at least two vertically mounted, longitudinal, heating chambers that are arranged in series.

The invention further relates to a process for fast and homogeneously heating a liquid product to a heating temperature by means of resistive heating in such apparatus comprising (a) continuously supplying the liquid product to the first heating chamber in series and flowing the liquid product continuously through the at least two heating chambers; (b) continuously generating an electrical current through the liquid product flowing through the heating chambers by continuously applying an electrical potential over each heating chamber, wherein the direction of the current is continuously alternated with a frequency of at least 500 Hz, to obtain heated liquid product; and (c) continuously discharging heated liquid product from the last heating chamber in series, wherein the liquid product has an electrical conductivity of at least 0.03 S/m.

A thermal increase system includes a cavity, a first electrode disposed in the cavity, a second electrode disposed in the cavity, and a self-oscillator circuit that produces a radio frequency signal that is converted into electromagnetic energy that is radiated into the cavity by the first and second electrodes. The self-oscillating circuit includes the first electrode and the second electrode. In an embodiment, the first electrode is a first plate in a capacitor structure and the second electrode is a second plate in the capacitor structure. The cavity and a load contained within the cavity operates as a capacitor dielectric of the capacitor structure. A resonant frequency of the self-oscillator circuit is at least partially determined by a capacitance value of the capacitor structure.

A thermal increase system includes a cavity, a first electrode disposed in the cavity, a second electrode disposed in the cavity, and a self-oscillator circuit that produces a radio frequency signal that is converted into electromagnetic energy that is radiated into the cavity by the first and second electrodes. The self-oscillating circuit includes the first electrode and the second electrode. In an embodiment, the first electrode is a first plate in a capacitor structure and the second electrode is a second plate in the capacitor structure. The cavity and a load contained within the cavity operates as a capacitor dielectric of the capacitor structure. A resonant frequency of the self-oscillator circuit is at least partially determined by a capacitance value of the capacitor structure.

A method of cooking food arranged in a sealed package including a one-way valve that opens at an overpressure of 20-200 mbar, including: heating the sealed package in an oven at approximately atmospheric pressure for a first time period; and after the first time period, subjecting the package to a sub-atmospheric pressure such that gas leaves the sealed package through the valve.

The present invention relates to a processing apparatus to melt animal fat, in which an animal raw fat material is transported by a means, preferably a pump, through a microwave chamber and thereby heated. The present invention further relates to a method to heat animal raw fat material with radio-frequency waves.

The present invention relates to a heating apparatus, which heats a substance in a chamber. The present invention further relates to a food production line and a method to heat a substance with radio-frequency waves.

A cooling apparatus that cools a cooling target object while causing the cooling target object generate internal heat by an electromagnetic wave and that is capable of efficiently producing a subcooling state of the cooling target object is provided. The cooling apparatus includes a refrigeration machine which cools the cooling target object, an electromagnetic wave irradiation device which irradiates the cooling target object with an electromagnetic wave so as to cause the internal heat generation in the cooling target object and has a variable frequency of the irradiating electromagnetic wave, and a controller which controls operations of the refrigeration machine and the electromagnetic wave irradiation device and which performs a subcooling operation of cooling the cooling target object using the refrigeration machine while irradiating the cooling target object with an electromagnetic wave. The controller performs a preliminary operation of controlling the electromagnetic wave irradiation device such that the electromagnetic wave irradiation device irradiates the cooling target object with the electromagnetic waves of various frequencies by changing the frequency of the electromagnetic wave to be irradiated to determine a subcooling operation frequency which is a frequency of the electromagnetic wave to be irradiated to the cooling target object by the electromagnetic wave irradiation device in the subcooling operation. The controller controls the electromagnetic wave irradiation device so that the electromagnetic wave irradiation device irradiates the electromagnetic wave of the subcooling operation frequency determined in the preliminary operation in the subcooling operation.

The present disclosure relates to novel microwave systems and new applications of microwave in medical, chemical and materials manufacturing and processing, food and health industries as well as in analytical chemistry instrumentation for in situ study of microwave effects. In the case of medical applications, the microwave based damage is conducted in a way to diminish ablating or damaging the collateral tissue and to increase the probability of procedure achievement.