Transformer structure of microwave oven

Abstract

The invention discloses a transformer structure of a microwave oven, comprising an iron core, a coil, an insulating strip, an incoming end, an output end and a fixed plate. A silicon steel disc positioned outmost the two ends of the iron core is provided with an anti-magnetic plate, the anti-magnetic plate is vertical to the silicon steel disc and erected at the two sides of the silicon steel disc to block a magnetic force line generated by magnetic leakage of the coil protruded on the iron core part. Therefore, the invention blocks electromagnet excitation of the microwave oven shell from a magnetic field generated by the magnet leakage of a coil winding terminal, avoids causing the microwave oven shell to resonate and reduces the noise of the integral structure during operation of the microwave oven. Besides, the anti-magnetic plate arranged on the silicon steel plate also increases the integral radiation area of the transformer, thereby the invention is more beneficial to ventilation and radiation of the transformer, effectively reduce the temperature of the transformer during the operation of the microwave oven and improve the radiation efficiency of the transformer.

Description

Technical field [0001] The present invention belongs to the technical field of microwave ovens, and specifically relates to an anti-magnetic plate provided on the outermost silicon steel sheets at both ends of the iron core to block the magnetic leakage generated by the coils protruding from the iron core part, avoiding resonance of the microwave oven shell, thereby effectively The transformer structure of the microwave oven can reduce the structural noise of the microwave oven. technical background [0002] A microwave oven is a device that generates microwaves by a magnetron after the power is turned on, and irradiates these microwaves on the food to be heated to cook the food. Such microwave ovens can be divided into household microwave ovens equipped with small magnetrons and commercial microwave ovens equipped with large or multiple magnetrons. Microwave ovens can also be classified according to the way of heating food. Household microwave ovens generally use the method of ...

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Problems solved by technology

[0009] The transformer structure of the microwave oven in the prior art is fixed on the bottom plate, and the distance between the transformer and the shell of the microwave oven is only 1-3 centimeters. It will generate electromagnetic excitation to the nearby microwave oven casing, causing it to resonate, resulting in greater noise

In addition, the transformer will generate a lot of heat due to the internal resistance when it is working. The higher the voltage generated by the transformer, the greater the heat generation. However, the ventilation and heat dissipation area of ​​the transformer is small, so that the heat cannot be dissipated in time, thus affecting the heat dissipation efficiency of the transformer.

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