KR100416770B1 - Microwave oven - Google Patents

Abstract

The present invention relates to a microwave oven, and more particularly, to a microwave oven that allows food to be heated uniformly by shortening the cooking time by rotating the table on which the food is placed and by moving in a vertical direction.

The present invention as described above and the main body to form the appearance of the microwave; A cooking chamber formed inside the main body; A table installed below the cooking chamber and on which food is placed; It is formed between the table and the main body is characterized in that it comprises a drive means for rotating the table and to move in the vertical direction to cook food evenly.

Description

Microwave oven {MICROWAVE OVEN}

The present invention relates to a microwave oven, and more particularly, to a microwave oven capable of shortening the cooking time of food by heating the food evenly.

In general, a microwave oven is an apparatus for cooking food using high frequency dielectric heating. These microwave ovens use high frequencies above a few MHz and are made using magnetrons.

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

As shown in FIG. 1 or FIG. 2, the conventional microwave oven includes a main body 10 provided with a control unit at one side, and a table 11 installed so that food is placed in a cooking chamber C located inside the main body 10. And a door 12 rotatably connected to one side of the main body 10.

Here, the cooking plate 11 is supported by the roller 13 is rotatably coupled, the roller 13 is a plurality of the roller 13 is maintained at a predetermined interval to the rotary ring 14, the rotary ring 14 The middle portion is coupled to the driving motor 15 disposed between the lower portion of the cooking chamber C and the main body 10.

In addition, between the main body 10 and the cooking chamber (C) as a heat source for cooking of food placed on the cooking plate 11, a magnetron for generating a microwave, a grill heater and a convection heater are respectively disposed.

In the conventional microwave oven configured as described above, the user places the food to be cooked on the cooking dish 11, closes the door 12, and starts cooking by operating the control unit. Is introduced into the cooking chamber (C), the microwave energy is absorbed into the food, and the food is heated and cooked.

At this time, the roller 13 and the rotary ring 14 are rotated under the table 11 in accordance with the driving of the drive motor 15, the table 11 and the food together by the roller (13) As it is rotated, the food placed on the table 11 is uniformly heated.

However, the conventional microwave oven as described above has a problem that does not meet the user's desire for more rapid and uniform cooking by heating the food while only the table 11 rotates.

In addition, since the rotary ring 13, the roller 14, etc. are required for uniform heating of the food, there is a problem in that a lot of space for installation is required.

The present invention has been made to solve the above problems of the prior art, an object of the present invention is to provide a microwave oven that can shorten the cooking time by more evenly heating the food.

In addition, the object of the present invention is to provide a microwave oven in which an installation space is secured by simplifying a driving structure of a table necessary for uniform cooking.

1 is a perspective view of a microwave oven according to the prior art,

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

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

4 is an enlarged view of a portion A of FIG. 3.

<Explanation of symbols on main parts of the drawings>

30: body 31: table

C: cooking chamber 51: case

52 shaft 55 sealing member

54: rotor frame 56: magnet for rotational movement

58: up and down movement magnet 60: stator

62: first stator core 64: second stator core

70: upper cover 72: lower cover

98a: first spring 98b: second spring

Microwave oven according to the present invention for solving the above problems and the main body to form the appearance of the microwave; A cooking chamber formed inside the main body; A table installed below the cooking chamber and on which food is placed; It is possible to include a rotating / lifting motor disposed between the table and the main body to rotate the table and to move in the vertical direction.

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

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

The microwave oven according to the present invention forms an appearance and is provided with a main body 30 having a control unit at one side, a cooking chamber C located inside the main body 30, and a lower portion of the cooking chamber C. The driving means 50 is formed between the table 31 and the table 31 and the main body 30 to rotate the cooking plate 31 and to move in the vertical direction so as to uniformly cook food. ).

4 is an enlarged view of a portion A of FIG. 3.

As shown in FIG. 4, the driving means 50 rotates and vertically reciprocates the table 31 to uniformly cook food, and passes through the center of the upper surface of the case 51 and the case 51. And a shaft 52 connected to the center lower portion of the table 31, a rotor frame 54 integrally formed with the shaft 52, and a rotational movement circumferentially mounted inside the rotor frame 54. The magnets 56 and the vertical movement magnet 58 mounted in the circumferential direction on the outer side of the rotor frame 54, and the magnets between the rotary movement magnet 56 and the vertical movement magnet 58 and The first stator core 62 is formed of a stator 60 spaced apart from each other, and a winding coil installed on the inner circumferential surface of the stator 60 to rotate the magnet 56 for rotating motion when power is applied. And, of the stator 60 When installed inside the power supply side end it is made of a second stator core (64) consisting of a winding coil for moving the magnet up and down motion (58) for the vertical direction.

The rotor frame 54 is formed of a pillar body 54a having a larger diameter than the shaft 52 and a disc body 54b extending radially outward from the lower end of the pillar body 54a.

An upper cover 70 is installed above the rotor frame 54, and the stator 60 is fixed to the upper cover 70 by bolts 80.

In addition, a lower cover 72 surrounding the lower and outer sides of the rotor frame 54 is fastened to the upper cover 70 as a bolt 80.

The shaft 52 is installed between the shaft 52 and the upper and lower cover 70, 72 so that the shaft 52 can be in sliding contact with the shaft 52 to allow rotation and vertical reciprocating movement. The radial bearing 92a and the thrust bearing 92b are respectively provided outside.

In addition, an elastic member is mounted at a predetermined portion of the periphery of the shaft 52 to impart an elastic force to the vertical movement of the shaft 52.

The elastic member is fitted into a cylindrical groove (52a) formed between the upper portion of the pillar (54a) and the shaft 52, the first spring (98a) and the upper end in contact with the sleeve bearing (90a), and the pillar It consists of a second spring 98b fitted into the cylindrical groove 52b formed between the lower side of the sieve 54a and the shaft 52 and having a lower end contacting the sleeve bearing 90a.

On the lower side of the case 51, a recess 51a to which the lower cover 72 of the driving means 50 is fixed and a groove 51b are formed so that the lower side of the shaft 52 is movable. The sealing member 55 is installed between the upper surface of the case 51 and the shaft 52 so that food is not leaked toward the driving means 50.

Looking at the operation of the microwave oven according to the present invention configured as described above are as follows.

When power is applied to the winding coil of the first stator core 62 when the microwave oven is operated, the rotor frame 54 is rotated by the rotary motion magnet 56 and the shaft 52 integrally formed with the rotor frame 54. ) Rotates the table 31 as it rotates.

When the power is applied to the second stator coil 64, the rotor frame 54 is vertically reciprocated by the shanghai copper magnet 58 so that the shaft 52 integrally formed with the rotor frame 54 is vertically moved. The shaft 52 is reciprocated up and down within a given movement range while being subjected to elastic force by the first spring 98a and the second spring 98b.

According to the reciprocating motion of the shaft 52, while the table 31 is reciprocated up and down, the food is uniformly cooked and the cooking time is shortened.

The microwave oven according to the present invention configured as described above has an advantage of shortening the cooking time of food because the table can simultaneously perform a rotary motion and a vertical reciprocating motion when cooking food.

In addition, there is an advantage that the utilization of the space is facilitated by removing the conventional rotary ring, roller and the like.

Claims (9)

A main body forming an appearance of the microwave oven; A cooking chamber formed inside the main body; A table installed below the cooking chamber and on which food is placed; And a rotation / elevation motor disposed between the table and the main body to rotate the table and to move the table in a vertical direction. The method of claim 1, The rotating / elevating motor may include a shaft connected to the cooking dish; A rotor frame integrally connected with the shaft; A magnet for rotational movement and a magnet for vertical movement, respectively mounted to the rotor frame; A stator installed to be spaced apart from the magnets; A first stator core installed on the stator and rotating the magnet for the rotary motion when power is applied; And a second stator core installed in the stator and configured to move the vertical movement magnet in a vertical direction when power is applied. The method of claim 2, The rotor frame includes a pillar extending radially from the shaft; Comprising a disk body extending in the radially outward direction from the lower end of the pillar body, the rotary motion magnet is mounted in the circumferential direction on the inner surface of the disk body, the magnet for up and down movement is a circumference on the outer surface of the disk body The stator is positioned between the magnets. The method of claim 3, An upper cover fixed to the case is installed on the upper side of the rotor frame, the stator is characterized in that the microwave oven is fixed to the upper cover. The method of claim 4, wherein Microwave oven characterized in that the sleeve bearing and the radial bearing is installed between the upper cover and the shaft. The method of claim 5, And a cylindrical groove is formed between the upper portion of the pillar of the rotor frame and the shaft, and a spring having an upper end contacting the sleeve bearing is fitted in the cylindrical groove. The method of claim 3, The lower and side surfaces of the rotor frame, characterized in that the microwave oven is fixed to the case is installed. The method of claim 7, wherein And a sleeve bearing and a thrust bearing between the lower cover and the shaft. The method of claim 8, And a cylindrical groove is formed between the lower side of the pillar of the rotor frame and the shaft so that a coil spring having a lower end contacting the sleeve bearing is fitted into the cylindrical groove.