JPH01689A - High frequency heating device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a high-frequency heating device, and more particularly to a so-called rotary mounting table mechanism on which an object to be heated is placed and rotated.

BACKGROUND ART FIG. 3 is a schematic front sectional view of a conventional high frequency heating device. The object to be heated 2 in the heating chamber 1 is internally heated by high frequency waves generated from a high frequency generator 3 . Reference numeral 4 denotes a rotary mounting table on which an object to be heated made of borosilicate glass is placed, and 5 denotes a rotating table which transmits the rotational force of a rotary motor 6 to the rotary mounting table 4.

The problem that the invention seeks to solve The problems with the above configuration are as follows.

Conventionally, a turntable system in which a rotary mounting table made of a dielectric material such as borosilicate glass is rotated has been often used as a means for uniformizing the distribution of radio waves in high-frequency heating devices. The conventional example shown in FIG. 3 also uses this system, but the disadvantage of this configuration is that the heating at the bottom tends to be weak, especially at the center of rotation. The reason for this is that metal is usually used for the rotary table 6 in consideration of durability, heat resistance, and economy, but because of this metal rotary table 5, high-frequency radio waves are reflected and are not absorbed by the heated object. It's for a reason. In particular, because there is little movement at the center of rotation, the radio waves are weak. As a countermeasure to this problem, a method has been proposed in which a plurality of holes are made in the rotary table 5 and the radio waves are absorbed from the bottom of the food through the holes, but the effect is insufficient and a fundamental countermeasure is required.

The present invention solves the above-mentioned conventional problems and has a simple configuration.It strengthens the heating at the bottom of the object to be heated, allows the entire object to be heated evenly, and has excellent cooking performance compared to the conventional method. The present invention provides a high-frequency heating device that can reduce costs.

Means for Solving the Problems In order to achieve the above object, the high frequency heating device of the present invention includes a heating chamber for storing and heating an object to be heated, and a heating chamber provided at the bottom of the heating chamber for heating the object to be heated. It has a rotary mounting table that is placed and rotated, and a driving means that is disposed outside the heating chamber and rotates the rotary mounting table, and the rotary mounting table is configured in a slatted shape with metal conductor wires. .

Function: In the high-frequency heating device of the present invention, the rotating mounting table on which the object to be heated is placed is configured in the shape of a gridiron using metal conductor wires, so that high-frequency radio waves can easily pass through the gridiron from below the rotating mounting table to easily transfer the heated object to the heated object. absorbed into the bottom of the Therefore, the object to be heated can be heated uniformly, and cooking performance is improved. Furthermore, the metal conductor wires that form the drainboard reflect radio waves with directionality, but because they rotate, radio waves are reflected diffusely, resulting in a uniform radio wave distribution within the heating chamber. This effect is the same as the stirrer effect when so-called stirrer blades are provided. Because the rotary mounting table is constructed in the shape of a griddle using metal conductor wires, the object to be heated rotates within the heating chamber and is heated evenly on the average, and the stirrer effect works together to create a very uniform radio wave distribution. It is possible to obtain a high-frequency heating device with excellent cooking performance that has been greatly improved.

Further, since the rotary mounting table is made of metal, it can constitute a support leg. Therefore, it is possible to replace the conventionally required large rotary table with a small drive shaft. In this way, the drive mechanism of the rotary mounting table can be simplified and costs can be reduced.

EXAMPLE Hereinafter, an example of the present invention will be described based on the drawings.

The first factor is a schematic front cross-sectional view of a high-frequency heating device according to an embodiment of the present invention. The object to be heated 2 in the heating chamber 1 is internally heated by high-frequency radio waves generated from the high-frequency generator 3 . Reference numeral 7 denotes a rotary mounting table constructed in the shape of a drainboard using metal conductor wires, and 8 a drive shaft that fits into an engaging portion provided on the rotary mounting table and transmits the rotation of the rotary motor 6.

FIG. 2 is a detailed view of the rotary mounting table 7, in which a vertical mesh rod 9b and a horizontal mesh rod 9c are welded and fixed to an outer frame 9 forming the outer periphery to form a drainboard. Reference numeral 1o indicates a support leg to which the outer frame 91 is welded and fixed, and reference numeral 11 indicates an engaging metal fitting that engages with the drive shaft 8 to rotate the rotary mounting table 7.

As shown by the arrows in FIG. 1, the high-frequency radio waves generated from the high-frequency generator 3 pass through the grates from below the rotary mounting table 7 and are uniformly absorbed by the bottom surface of the object to be heated 2. In this way, the heating of the bottom portion of the object to be heated 2, which has been a problem in the past, is also performed satisfactorily.

In addition, the outer frame 9m and the net rods (eb,
9a) reflects high frequency radio waves. Since the rotary mounting table 7 rotates, reflection of radio waves occurs in all directions of the heating chamber 1, and the radio wave distribution becomes uniform within the heating chamber 1.

As a result, when high-frequency cooking is performed, the object 2 to be heated is heated uniformly, resulting in a good result with no uneven heating. Furthermore, since the object to be heated 2 rotates and moves within the heating chamber 1 together with the rotary mounting table 7, the strength of the radio waves absorbed by the object to be energized 2 is averaged and becomes uniform. Because of these two effects, a dramatic improvement in cooking performance can be expected compared to the conventional method.

Furthermore, in this embodiment, the conventional rotary table is replaced with a small drive shaft by providing support legs 10 on the rotary mounting table 7. Since the drive mechanism for the rotary mounting table 7 can be simplified in this way, it has become possible to significantly reduce costs.

Effects of the Invention As described above, according to the high-frequency heating device of the present invention, the rotating mounting table on which the object to be heated is placed and rotated is constructed in the shape of a drainboard using metal conductor wires, so that the following effects can be obtained. can.

(1) Since the high-frequency radio waves pass through the grates from below the rotary mounting table and are uniformly absorbed by the bottom surface of the object to be heated, good heating and cooking can be achieved.

(2) The high-frequency radio waves are reflected by the outer frame and mesh rods forming the rotary mounting table, but since the rotary mounting table rotates, the high-frequency radio waves are uniformly reflected diffusely into the heating chamber. Therefore, the high-frequency radio wave distribution becomes uniform in both the three-dimensional distribution and the two-dimensional distribution, and the object to be heated is uniformly heated even if the size changes, and a significant improvement in cooking performance can be expected.

(3) Since the rotating mounting table is made of metal, support legs can be provided directly on the rotating mounting table. As a result, the drive mechanism of the rotary mounting table can be simplified, resulting in a significant cost reduction.

[Brief explanation of the drawing]

Fig. 1 is a front cross-sectional view of essential parts of a high-frequency heating device according to an embodiment of the present invention, Fig. 2 (a) * (b) is a front view and a plan view of a rotary mounting table of the same device, and Fig. 3 is a conventional FIG. 2 is a front sectional view of main parts of the high-frequency heating device. 1... Heating chamber, 3... High frequency generator, 6... Motor, 7... Rotating mounting table,
8... Drive shaft. Name of agent: Patent attorney Toshi Nakao Haka1/-
--Kakuma Sumire 2--Ikkkuma Kakuma! 3-11 Tsuruoka Wave Occurrence Table 1 6--Motor 7--Rotating Battle iIL Color Fig. 1 8-N Moving Axis 7-- Rotating IEIL Table 9 (L--1 External Breaking Industry 2 Fig. 9b- 11 vertical obscene 9C --- chest net rod lO- 11 Hiki special circumference (α)

Claims (2)

[Claims] (1) A heating chamber that stores and heats an object to be heated; a rotating mounting table that is provided on the bottom of the heating chamber and rotates with the object to be heated; and a rotating mounting table that is disposed outside the heating chamber and rotates. 1. A high-frequency heating device, comprising: a driving means for rotating a mounting table, and the rotating mounting table is configured in a drainboard shape with metal conductor wire. (2) A patent in which the rotating mounting table is composed of an outer frame forming an outer periphery, a mesh rod welded and fixed to the outer frame to form a substantially flat surface, and support legs supporting the outer frame and the mesh rod. A high frequency heating device according to claim 1.