KR19990003822A - Microwave Hot Air Circulation System - Google Patents

Abstract

In the microwave hot air circulation apparatus according to the present invention, a hot air circulation motor for circulating the heat of the heater so that the food in the cooking chamber is evenly cooked, and a blower fan in the microwave oven provided at the rear of the stove body, the power of the motor The heat of the heater installed in the upper surface of the cooking chamber is introduced into the cooking chamber through the first through-hole of the cooking chamber by the blowing fan driven and received, and the hot air is circulated through the second through-hole formed in the rear side of the cooking chamber. The present invention, characterized in that the hot air effectively circulate the food evenly and at the same time the heat of the heater is not transferred to the motor can prevent the overheating of the motor.

Description

Microwave Hot Air Circulation System

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven, and more particularly, to a hot air circulation device of a pendulum, which is configured to effectively circulate hot air in a cooking chamber.

In general, as shown in FIGS. 1 and 2, the conventional microwave oven is partitioned into a predetermined area so that the cooking chamber 20 is accommodated on one side (left side) of the stove body 10 for cooking of food. On the other side (right side) of the stove body 10, a machine room 30 is formed in a predetermined area so as to accommodate an electric component assembly, and the door 40 is coupled to the front side of the cooking chamber 20 in an opening and closing manner. The control panel 50 is coupled to the front side of the machine room 30.

The turntable 60 is freely mounted on the bottom of the cooking chamber 20 so as to evenly heat and cook the food placed on the upper side, and a blowing fan 71 driven by a motor 70 on the rear side of the cooking chamber 20. Is blown through the through hole 21 into the inside of the cooking chamber 20, and the food in the cooking chamber 20 is heated and cooked by the hot air.

The microwave oven configured as described above first distributes the high frequency generated from the magnetron (not shown) by applying power to the cooking chamber 20 and simultaneously blows the air by driving the motor 70 at the rear side of the stove body 10. When the fan 71 is rotated, the blower fan 71 blows heat generated by the heater 72 on the front side into the cooking chamber 20 through the through-hole 21 so that the food is evenly spread by the hot air. It is cooked.

However, the microwave oven configured as described above is provided with a blowing fan 71 driven by the motor 70 so as to blow heat generated from the heater 72 into the cooking chamber 20 so that food is evenly heated and cooked. The blower fan 71 is installed with the heater 72, and hot air flowing into the through-hole 21 outside the cooking chamber 20 circulates inside the cooking chamber 20 and again opens the through-hole 21. There is a problem that the blowing fan 71 and the motor 70 is overheated due to the flow back to the heater 72.

Therefore, the present invention has been made to solve the above problems, an object of the present invention is to change the position of the motor and blower fan for hot air circulation outside the microwave to effectively circulate the hot air in the cooking chamber and the heat of the heater The present invention provides a hot air circulation system of a microwave oven that not only minimizes heat transmitted to the motor by preventing the reverse flow, but also allows food in the cooking chamber to be cooked evenly.

In order to achieve the above object, the microwave hot air circulation apparatus according to the present invention, the hot air circulation motor for circulating the heat of the heater so that the food in the cooking chamber is cooked evenly and the blower fan is installed on the rear of the microwave main body In the stove, the heat of the heater installed on the upper surface of the cooking chamber by the blower fan driven by the power of the motor is introduced into the cooking chamber through the first through-hole of the upper cooking chamber and formed on the rear side of the cooking chamber The hot air is circulated through the through hole.

1 is a perspective view showing a typical microwave oven,

Figure 2 is a longitudinal sectional view showing a hot air circulation device of a conventional microwave oven,

3 is an exploded perspective view showing a part of the microwave hot air circulation apparatus according to the present invention,

4 is a longitudinal sectional view showing a hot air circulation device of a microwave oven according to the present invention;

5 is a plan sectional view showing a hot air circulation device of a microwave oven according to the present invention.

* Explanation of symbols for main parts of the drawings

10: stove body 20: cooking room

25: first through hole 26: second through hole

27: rear duct 28: upper duct

70: motor 71: blowing fan

72: heater

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail, referring an accompanying drawing.

In the drawings, the same parts as in the conventional construction are denoted by the same reference numerals and detailed description thereof will be omitted.

3 to 5, a high-voltage transformer 31 for generating high pressure by applying power to the bottom surface is installed in the machine room 30 formed on one side of the outside of the stove body 10. The magnetron 32 generating high frequency by applying the high pressure generated from the high voltage transformer 31 is bounded to the side wall which is separated from the cooking chamber 20, and the outside side is sucked into the rear wall to suck the outside air in the machine room 30. The cooling fan 33 is bound to cool the heat generated from the various electrical components.

A hot air circulation motor 70 and a blowing fan 71 for circulating the heat of the heater 72 so that the food in the cooking chamber 20 is evenly cooked are installed at the rear side of the stove body 10.

In the microwave hot air circulation apparatus according to the present invention, the heat of the heater 72 installed on the upper surface of the cooking chamber 20 is driven by a blowing fan 71 driven by receiving power other than the motor 70. The hot air is circulated through the second through hole 26 introduced into the cooking chamber 20 through the first through hole 25 of the upper side and formed on the rear side of the cooking chamber 20.

The blowing fan 71 is guided through the rear duct 27 formed in the rear side of the cooking chamber 20 is hot air in the cooking chamber 20 leaked through the second through hole 26 is the upper surface of the cooking chamber 20 It is installed at a position to blow into the upper duct 28 formed in the.

The application and effects of the present invention configured as described above will be described next.

First, power is applied to distribute the high frequency generated from the magnetron 32 into the cooking chamber 20, and at the same time, the blower fan 71 is rotated by driving the motor 70 at the rear side of the stove body 10. In other words, the blower fan 71 blows heat generated by the heater 72 on the front side of the blower fan through the first through-hole 25 through the upper duct 28 into the cooking chamber 20 to the hot air. The food is cooked evenly, and the hot air in the cooking chamber 20 flows out through the second through-hole 26 formed at the rear side thereof, and is cooked while being circulated back to the upper duct 28 along the rear duct 27. .

As described above, according to the microwave hot air purifying apparatus according to the present invention, the heat of the heater is introduced into the cooking chamber through the upper surface of the cooking chamber and the hot air flows out through the rear wall of the cooking chamber to circulate back to the cooking chamber. By effectively circulating the hot air to cook food evenly and at the same time the heat of the heater is not transmitted to the motor to prevent the overheating of the motor.

Claims (2)

In a microwave oven provided with a hot air circulation motor and a blower fan that circulates heat of a heater so that the food in the cooker is cooked evenly, the upper part of the cooker is driven by a blower fan driven by receiving power other than the motor. Heat of the microwave oven is configured to circulate the hot air through the second through hole formed in the rear side of the cooking chamber and the heat of the heater installed on the surface through the first through hole in the cooking chamber. According to claim 1, wherein the blowing fan is installed in a position where the hot air flows through the second duct through the rear duct formed in the rear side of the cooking chamber is blown by the upper duct formed on the upper surface of the cooking chamber. Microwave hot air circulation device characterized in that.