Frequency converter and microwave oven
A frequency converter and microwave oven technology, applied in the direction of transformers, transformer/inductance parts, instruments, etc., can solve the problems of frequency converter temperature rise, transformer energy transmission efficiency reduction, affecting the service life of frequency converters, etc., to improve the whole machine efficiency effect
Pending Publication Date: 2017-03-22
GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD +1
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Problems solved by technology
[0002] In the related art, in order to obtain the required leakage inductance for the step-up transformer of the frequency converter of the microwave oven for resonance, it is necessary to reduce the magnetic coupling between the primary and secondary windings of the step-up transformer, which will cause the energy transmission of the transformer Efficiency is reduced, and at the same time, the overall temperature rise of the inverter will be high, which will reduce the reliability of the inverter and affect the service life of the inverter
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[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0028] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating ...
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The invention discloses a frequency converter and a microwave oven. The frequency converter comprises an inversion switch unit, a boost transformer and a voltage-multiplying rectification unit, wherein the inversion switch unit comprises a switching tube, a resonant capacitor and a resonant inductor, the resonant capacitor is connected between the switching tube and the resonant inductor, the boost transformer comprises a primary winding and a secondary winding, one end of the primary winding is connected with one end of the resonant capacitor by the resonant inductor, the other end of the primary winding is connected with the other end of the resonant capacitor and the switching tube, and the secondary winding is connected with the voltage-multiplying rectification unit. In the frequency converter disclosed by the embodiment, the inversion switch unit is additionally arranged, thus, the resonant inductor and the boost transformer are separately arranged, the resonant inductor will not affect magnetic coupling between the primary winding and the secondary winding, the energy transmission efficiency of the boost transformer can be further improved by improving the magnetic coupling between the primary winding and the secondary winding, the whole machine efficiency of the frequency converter is improved, and the working reliability of the frequency converter is ensured.
Description
technical field [0001] The invention relates to the field of household appliances, in particular to a frequency converter and a microwave oven. Background technique [0002] In the related art, in order to obtain the required leakage inductance for the step-up transformer of the frequency converter of the microwave oven for resonance, it is necessary to reduce the magnetic coupling between the primary and secondary windings of the step-up transformer, which will cause the energy transmission of the transformer Efficiency is reduced, and at the same time, the overall temperature rise of the inverter will be high, which will reduce the reliability of the inverter and affect the service life of the inverter. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the related art. Therefore, the present invention needs to provide a frequency converter and a microwave oven. [0004] The frequency converter in t...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H02M3/335H02M7/48H01F38/00H01F27/30
CPCH02M3/335H02M7/48H01F27/306H01F38/00H01F2038/003H02M7/4818Y02B70/10
Inventor 覃承勇黎青海郑年重艾军亮
Owner GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD