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Microwave oven, start control device of microwave oven variable-frequency power source, and method

A frequency conversion power supply, microwave oven technology, applied in the direction of output power conversion device, microwave heating, electrical components, etc., can solve the problem of inability to accurately control the anode voltage of the magnetron, inaccurate output of duty cycle, breakdown damage of the magnetron, etc. problems, to avoid slow start-up, avoid inaccurate control, and avoid breakdown damage

Active Publication Date: 2016-07-06
GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the fluctuation of the primary side voltage of the transformer, the duty cycle output is inaccurate, so that the anode voltage of the magnetron cannot be accurately controlled, which may cause breakdown damage of the magnetron or damage to other components, and may also cause slow start-up speed And other issues

Method used

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  • Microwave oven, start control device of microwave oven variable-frequency power source, and method
  • Microwave oven, start control device of microwave oven variable-frequency power source, and method
  • Microwave oven, start control device of microwave oven variable-frequency power source, and method

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Embodiment Construction

[0035] 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 designate 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 and are intended to explain the present invention and should not be construed as limiting the present invention.

[0036] The following describes the start-up control device and method of microwave oven variable frequency power supply and microwave oven according to the embodiments of the present invention with reference to the accompanying drawings.

[0037] figure 1 It is a block diagram of a start-up control device for a variable frequency power supply of a microwave oven according to an embodiment of the present invention. like figure 1 As shown, the start-up control device of the variable frequency power supply for a microwave oven inc...

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Abstract

The invention discloses a start control device of a microwave oven variable-frequency power source. The start control device includes a variable frequency power source, a resonant voltage detecting module used for detecting the resonance voltage of the primary side of a transformer, a control module used for controlling the variable frequency power source to enter a soft start stage after the variable-frequency power source is electrified, controlling the variable frequency power source to enter a preheating stage after the soft start stage is completed, and controlling the variable frequency power source according to the resonance voltage in the preheating stage. The device can control the variable frequency power source through detecting the resonance voltage of the primary side of the transformer so as to realize accurate control on the anode voltage of a magnetron. The invention also discloses a microwave oven and a start control method of a microwave oven variable-frequency power source.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to a start-up control device for a microwave oven variable frequency power supply, a microwave oven and a start-up control method for a microwave oven variable frequency power supply. Background technique [0002] At present, frequency conversion microwave ovens are widely used due to their advantages of light body, low noise and low power consumption. [0003] When the frequency conversion microwave oven is in normal operation, the filament of the magnetron is heated to about 2100K by a 3.3V power supply and starts to emit electrons. The emitted electrons do a wheel pendulum motion under the action of the anode high voltage and the magnetic circuit, and 2450MHz microwaves are generated in the anode resonant cavity. , launched into the heating cavity of the microwave oven through the energy exporter. [0004] However, when the variable frequency power supply in the var...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B6/68H02M1/36
CPCY02B40/00
Inventor 黎青海史龙
Owner GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD
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