Microwave oven

Abstract

The invention discloses a microwave oven which comprises a base plate, an outer cover and a transformer fixed on the base plate, wherein the outer cover is arranged on the base plate and covers the transformer; the transformer comprises a first E-shaped magnetic core, a second plate-type magnetic core, a primary coil, a secondary coil and a filament coil; the second magnetic core is fixed on the first magnetic core; the secondary coil, the filament coil and the primary coil are sequentially threaded through a center pillar of the first magnetic core; the winding planes of each of the primary coil, the secondary coil and the filament coil are vertical to the base plate. Through the microwave oven, the winding plane of each coil is vertical to the base plate, so that the horizontal size of the transformer is reduced, the distance between the transformer and the outer cover is increased, and force of a magnetic field generated by the transformer, which is applied to the outer cover, is reduced, and the vibration noise of the outer cover is reduced.

Description

technical field [0001] The present invention relates to the field of household appliances, more specifically, to a microwave oven. Background technique [0002] At present, microwave ovens are widely used in people's lives as utensils for heating food. The interior of the microwave oven mainly uses a traditional low-frequency transformer to supply power to the magnetron. The traditional low-frequency transformer is a horizontal transformer, and the coils of the horizontal transformer are placed parallel to the bottom of the transformer, resulting in a large lateral dimension of the transformer, and the limited space inside the microwave oven, which results in the transformer being closer to the microwave oven cover. The transformer will generate an alternating magnetic field with a frequency of 50Hz during the working process. The outer cover of the microwave oven is made of magnetic material, and the outer cover is a flat thin-walled sheet metal part. Its natural frequency...

AI Technical Summary

Problems solved by technology

The traditional low-frequency transformer is a horizontal transformer. The coil of the horizontal transformer is placed parallel to the bottom of the transformer, resulting in a large lateral dimension of the transformer, and the limited space inside the microwave oven, which results in the transformer being closer to the microwave oven cover.

The transformer will generate an alternating magnetic field with a frequency of 50Hz during the working process. The outer cover of the microwave oven is made of magnetic material, and the outer cover is a flat thin-walled sheet metal part. Its natural frequency is close to 50Hz. It is also closer to the microwave oven cover, which intensifies the force of the magnetic field on the microwave oven cover and increases the noise

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