KR20020043302A - A micro wave oven - Google Patents

Abstract

PURPOSE: A microwave oven is provided to reduce a rotating cost of a table by equally heating a food through a stirrer fan and a radiating fan and to reduce a rotating space of a cavity. CONSTITUTION: A microwave oven comprises a table(51) mounted on a cavity(52); a cabinet(50) assembled on an outer portion of the cavity; a control unit operating the microwave oven; a magnetron(70) generating microwave; a waveguide(74) guiding the microwave into the cavity by being formed between the magnetron and the cavity; an antenna(78) protruded on the waveguide; a dispersing unit equally dispersing the microwave into the food from the antenna; a door opening or closing the cavity by being rotationally mounted on the cavity; a stirrer fan(80) rotationally arranged between the antenna and the food; a radiating fan supplying air to rotate the stirrer fan. A guide unit(84) inducing the air into the stirrer fan; and a driving fan connected to a rotational shaft of the antenna. Thereby, the microwave oven reduces a rotating cost of the table by equally heating the food through the stirrer fan and the radiating fan.

Description

Microwave oven {A micro wave oven}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven, and more particularly, to a microwave oven, which does not need to be cooked while rotating the food, thereby eliminating the need for a rotation driving device required to rotate the food.

In general, a microwave oven generates microwaves using electricity, and infiltrates the microwaves into food, causing the food to heat up to the core in a short time as heat is generated by molecular vibrations inside the food.

1 and 2, a conventional microwave oven is assembled with a cavity 4 including a turntable 6 for placing food (not shown), and outside the cavity. A cabinet 2 in which a control unit 28 for operating a range is installed; It is rotatably coupled to the cabinet (2), and comprises a door (10) having a viewing window (8).

The turntable 6 is rotatably coupled to the bottom of the cavity 4 by being supported by the roller 12, and a plurality of the rollers 12 are attached to the rotary ring 14, and the rotary ring 14. The middle part is coupled to the rotary shaft 17 of the drive motor 16 disposed between the bottom of the cavity 4 and the cabinet 2.

In addition, the cabinet 2 includes a magnetron 20 for oscillating microwaves; A heat dissipation fan (not shown) and a motor (not shown) are built in to dissipate heat generated from the magnetron 20, and the waveguide, which is a traveling path of microwaves, is disposed between the magnetron 20 and the cavity 4. 24) is formed.

In the conventional microwave oven configured as described above, the user places the food to be cooked on the turntable 6, closes the door 10, and operates the control unit 28 to start cooking the magnetron 20. Microwaves oscillated at are introduced into the cavity 4 through the waveguide 24, the microwave energy is absorbed into the food, and the food is heated and cooked.

At this time, the rotary ring 14 and the roller 12 is rotated under the turntable 6 in accordance with the drive of the drive motor 16, the turntable 6 and the food together by the roller 12 As it is rotated, the food placed on the turntable 6 is heated uniformly.

However, the conventional microwave oven is expensive because the drive motor 16, the rotary ring 14 and the roller 12 for the uniform heating of the food is expensive, and the lower space of the turntable 6 takes a lot of There is a problem.

In addition, when the food is separated from the turntable 6 to contact the roller and the rotating ring, it is inconvenient to separate the turntable 6 from the inside of the cavity 4 to clean the roller and the rotating ring. There is this.

The present invention has been made to solve the above problems of the prior art, it is not necessary to rotate the table to uniformly heat the food, reducing the cost of the device for rotating the table, the device for rotating the table The purpose is to provide a microwave oven that can reduce the space occupied.

1 is a perspective view of a typical microwave oven,

Figure 2 is a cross-sectional view showing the configuration of the main part of the microwave oven according to the prior art,

3 is a cross-sectional view showing an embodiment of a microwave oven according to the present invention;

4 is a cross-sectional view showing another embodiment of a microwave oven according to the present invention.

<Explanation of symbols on main parts of the drawings>

50: cabinet 51: table

52: cavity 70: magnetron

74: waveguide 78: antenna

84: guide

Microwave according to the present invention for solving the above problems is a magnetron for oscillating microwave; A waveguide formed between the magnetron and the cavity to guide the microwaves oscillated by the magnetron into the cavity; An antenna installed at one side to protrude into the waveguide and the other side to protrude into the cavity toward food so that microwaves generated from the magnetron are propagated to the food side; It characterized in that it comprises a dispersion means for evenly dispersing microwaves propagated from the antenna to food.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a cross-sectional view showing an embodiment of a microwave oven according to the present invention.

Microwave according to the present invention is a cavity (52) including a table (51) for placing food (not shown), and is assembled to the outside of the cavity 52, for operating the microwave oven A cabinet 50 in which a control unit (not shown) is installed; A magnetron 70 for oscillating microwaves; A waveguide (74) formed between the magnetron (70) and the cavity (52) to guide the microwaves oscillated by the magnetron (70) into the cavity (52); An antenna (78) installed at one side to protrude into the waveguide (74) and the other side to protrude into the cavity (52) toward food so that microwaves generated from the magnetron (70) are propagated to the food side; It comprises a dispersion means for evenly dispersing the microwaves propagated from the antenna 78 to food.

A door (not shown) for opening and closing the cavity 52 is rotatably installed in the cabinet 50, and the table 51 is seated on an inner bottom surface of the cavity 52.

The dispersing means is a stirrer fan (80) rotatably disposed between the antenna (78) and the food so that the microwaves transmitted through the antenna (78) can be evenly distributed on the food placed on the table (51). )and; A heat dissipation fan (not shown) and a motor (not shown) for dissipating heat generated from the magnetron 70 and supplying air to rotate the stirrer fan 80; Guide portion 84 formed between the stirrer fan 80 and the magnetron 70 to guide the air passing through the outer circumference of the magnetron 70 by the rotation of the heat radiating fan to the stirrer fan 80. It is configured to include.

In this case, the antenna 78 is a coaxial antenna installed on the same axis as the rotation center of the stirrer fan 80.

The stirrer fan 80 is rotatably supported by a supporting rod (not shown) protruding toward the antenna 78 from the lower surface of the table 51.

Referring to the operation of the present invention configured as described above are as follows.

First, when a user performs a driving operation to cook food, the control unit causes the microwaves to oscillate in the magnetron 70 and drives the motor to rotate the radiating fan.

At this time, the microwaves oscillated from the magnetron 70 is transmitted to the lower portion of the antenna 78 through the waveguide 74, the antenna 78 is a food and drink put on the table 51 the microwaves It propagates inwardly into the cavity 52.

Meanwhile, heat is generated in the magnetron 70, and the air supplied by the rotation of the heat radiating fan radiates heat generated from the magnetron 70 while passing through the outer circumference of the magnetron 70. Guide portion 84 is guided.

In addition, the air guided by the guide portion 84 rotates the stirrer fan 80, and the microwaves propagated into the cavity 52 through the antenna 78 are coaxial with the antenna 78. The rotation of the stirrer pan 78 with a rotation center disposed on a line propagates evenly to the food placed on the table.

Here, instead of using the stirrer fan 80, the heat dissipation fan, the motor and the guide portion 84 as a dispersing means for evenly dispersing the microwave into food, the antenna 92 is rotated as shown in FIG. You can also disperse microwaves directly. That is, by using the drive motor 94 is connected to the rotating shaft 93 to the antenna 92, the antenna 92 is rotated so that the microwave evenly propagates to food. In this case as well, the same operation as in the above-described embodiment is, of course.

In the microwave oven of the present invention configured as described above, the microwaves generated by the magnetron are propagated into the cavity by an antenna installed under the cavity, and the antenna is fixed or seated inside the cavity. The propagated microwaves can be spread evenly by food by the stirrer fan, the guide part and the heat radiating fan, thereby reducing the cost of the device required to rotate the table.

In addition, since the table does not have to rotate inside the cavity, there is an advantage that the cavity inner space can be used for other purposes.

Claims (4)

A magnetron that oscillates microwaves; A waveguide formed between the magnetron and the cavity to guide the microwaves oscillated by the magnetron into the cavity; An antenna installed at one side to protrude into the waveguide and the other side to protrude into the cavity toward food so that microwaves generated from the magnetron are propagated to the food side; And a dispersing means for distributing the microwaves propagated from the antenna to food. The method of claim 1, The dispersing means may include a stirrer fan rotatably disposed between the antenna and the food such that the microwaves transmitted through the antenna can be evenly distributed to the food; A heat dissipation fan for dissipating heat generated from the magnetron and supplying air to rotate the stirrer fan; And a guide part formed between the stirrer fan and the magnetron to guide the air passing through the magnetron to the stirrer fan by the rotation of the heat radiating fan. The method of claim 2, The antenna is a microwave oven, characterized in that the coaxial antenna installed on the same axis as the rotation center of the stirrer pan. A magnetron that oscillates microwaves; A waveguide formed between the magnetron and the cavity to guide the microwaves oscillated by the magnetron into the cavity; An antenna installed at one side to protrude into the waveguide and the other side to protrude into the cavity toward food so that microwaves generated from the magnetron are propagated to the food side; And a drive motor having a rotating shaft connected to the antenna so that the microwaves can propagate evenly to the food while the antenna is rotated.