KR100288832B1 - Micro wave oven - Google Patents

Abstract

PURPOSE: A microwave oven is provided to enhance a uniform cooking performance of foodstuffs by proving a far infrared ray generation device to a lower portion of a cavity to use simultaneously two heating sources including a far infrared ray using a heater and a microwave generation by a magnetron. CONSTITUTION: A microwave oven comprises a magnetron(101) for generating a microwave if a power source is applied, a wave guide(103) for transferring the microwave generated from the magnetron(101) to a cavity(102), a turntable(105) for rotating to cook uniformly foodstuffs, a motor(106) for rotating the turntable(105) and a roller(107) to help an operation of the motor(106). A device for generating a far infrared ray, which is composed of a heater(108) and a ceramic plate(109), is placed at the top portion of the cavity(102). The heater(108) generates a heat if the power source is applied, the ceramic plate(109) generates the far infrared ray by receiving the heat from the heater(108).

Description

Microwave oven

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven, and more particularly, to a structure of a microwave oven for simultaneously using far infrared rays and electromagnetic waves.

As shown in FIG. 1, a conventional microwave oven includes a magnetron 1 that generates electromagnetic waves when power is applied, and a waveguide 3 that delivers electromagnetic waves generated from the magnetron 1 into the cavity 2. , A turntable 5 rotating for uniform cooking of the food 4, a motor 6 for rotating the turntable 5, and a roller 7 connecting the turntable 5 and the motor 6. ).

When power is applied in a state in which food is placed on the turntable 5 in the above-described configuration, electromagnetic waves are generated from the magnetron 1 and transferred to the cavity 2 through the waveguide 3.

At this time, the food 4 is cooked while being heated by the electromagnetic waves delivered into the cavity (2).

On the other hand, the turntable 5, on which the food 4 is placed, improves the uniform cooking performance while rotating by the motor 6 and the roller 7.

In such a microwave oven, the impedance matching of the magnetron and the cavity so that the electromagnetic waves generated from the magnetron 1 can be smoothly transmitted without loss in the cavity, and the uniform heating to prevent the electromagnetic waves applied in the cavity from being concentrated in a certain place. This is problematic because it has a limit to supply heat evenly during cooking.

However, in the conventional microwave oven, in the uniform heating of food, the amount, type, and shape of the food are varied, so that the difference in permittivity of the load in each case is one of the factors that makes it difficult to uniformly heat the electric field distribution formed in the cavity There was a strong and weak place.

In order to solve the above problems, the turntable method is employed, but there is a limit in forming a uniform electromagnetic field distribution, and when the food is not in the cavity, the magnetron and the cavity are overheated at no load.

In view of the above, the present invention includes a far-infrared generator at the top or the bottom of the cavity to improve uniform cooking performance of food by simultaneously using two heat sources such as far-infrared rays using a heater and electromagnetic waves generated by the magnetron. There is this.

1 is a conventional microwave oven configuration diagram.

2 is a microwave oven configuration diagram according to the present invention.

3 is a block diagram of another embodiment of the present invention.

Figure 4 is a detailed view of the far infrared ray generating apparatus according to the present invention.

5 is a far-infrared radiation dose variation with respect to the frequency of the ceramic plate according to the present invention.

*** Explanation of symbols for the main parts of the drawing ***

101, 201: magnetron 102, 202: cavity

103, 203: wave guide 104, 206: food

105: turntable 106: motor

107: roller 108, 204: heater

109, 205: ceramic plate

In order to achieve the above object, a first embodiment of the present invention, a cavity for forming a cooking space; A turntable mounted to the cavity and placed with food; A motor for driving the turntable; A heater disposed above the inside of the cavity and heated to receive power; A microwave oven disposed on one side of the cavity and includes a magnetron for irradiating microwaves to food and a wave guide for guiding the microwaves, wherein the lower side of the heater is mounted above the inside of the cavity and the ceiling surface of the cavity is installed. At the same time to provide a microwave oven characterized in that the ceramic plate which is heated by receiving heat directly from the heater and radiates far infrared rays to food.

Preferably, the ceramic plate is preferably made of a mixture of at least one of serpentine, granite, quartz-rock rock, gneiss, acid tuff, chorionic mica, kaolin, chalcopyrite, bentonite, feldspar and elvan.

In addition, a second embodiment of the present invention, the cavity forming the cooking space; A magnet guide disposed on one side of the cavity to guide the microwaves and a wave guide to guide the microwaves; A ceramic plate provided below the cavity to form a bottom surface and on which food is placed; And it is mounted on the lower side of the ceramic plate is supplied with power to provide a microwave oven including a heater provided to heat the ceramic plate.

Preferably, the ceramic plate is preferably made of a mixture of at least one of serpentine, granite, quartz-rock rock, gneiss, acid tuff, chorionic mica, kaolin, chalcopyrite, bentonite, feldspar and elvan.

Hereinafter, described in detail with reference to the accompanying drawings, an embodiment of the present invention for achieving the above object is as follows.

2 is a configuration diagram of a microwave oven according to the present invention, the magnetron 101 for generating electromagnetic waves when power is applied, and the waveguide 103 for transferring the electromagnetic waves generated from the magnetron 101 into the cavity 102 And an operation of the turntable 105 that rotates for uniform cooking of the food 104, the motor 106 that rotates the turntable 105, and the motor 106 that rotates the turntable 105. It consists of a roller 107 to help.

In addition, a far infrared ray generating device is located above the cavity 102. The heater 108 generates heat when power is applied, and the ceramic plate 109 radiates far infrared rays by receiving heat from the heater 108. It is composed.

The ceramic plate 109 is composed of rock, mineral or ore, the kind thereof is shown in Table 1 below.

Raw material classification Raw material classification rock Serpentine Minerals and ores Cicada Kaolin granite Lobstone Quartz-Porphyry Bentonite Gneiss feldspar Acid tuff Elvan

3 illustrates another embodiment of the present invention, in which a far-infrared ray generating device is located under the cavity 202, the magnetron 201 for generating electromagnetic waves, and the electromagnetic waves generated from the magnetron 201. The wave guide 203 to guide the inside 202, a heater 204 for generating heat when power is applied, and a ceramic plate 205 for radiating far infrared rays by receiving heat from the heater 204 is provided.

4 shows a mounting structure of the heaters 108 and 204 and the ceramic plates 109 and 205, wherein the heaters 108 and 204 are ceramic plates 109 and 205 and the cavity 102 and 202. It is attached to the ceramic plate 109, 205 in the space formed by, through the upper (lower) of the rear surface of the cavity (102, 202) and connected to the external power source.

When described in detail with reference to the accompanying drawings the operation of the present invention configured as described above are as follows.

First, when power is applied, electromagnetic waves are generated from the magnetron 101 and transferred to the cavity 101 through the wave guide 103.

This electromagnetic wave is a high frequency wave, and the food 104 is heated to allow cooking.

On the other hand, when power is applied, the heater 108 generates heat, and the ceramic plate 109 receives this heat to radiate far infrared rays, which also heats the food 104 to allow cooking.

As described above, the embodiment according to the present invention can have a good cooking effect irrespective of the type and load of food by simultaneously using electromagnetic waves and far-infrared rays as heating sources, and new cooking software can be developed by mixing two heat sources.

In other words, by applying a far infrared ray to a variety of different dishes for a certain time, by controlling the electromagnetic heating according to the time to enable effective cooking.

In general, the radiation of far-infrared radiation is a kind of black body radiation, and as the temperature of the ceramic plate 109 rises, the radiation amount increases at a ratio of four squares to the size of the temperature.

FIG. 5 shows the radiation dose with respect to the frequency and shows the elvan in the ceramic plate 109 as an example.

In addition, since the ceramic plate 109 is a dielectric, it absorbs electromagnetic waves at no load (when there is no food) to prevent overheating of the magnetron 101 due to the concentration of electromagnetic waves, and to damage the turntable 105 and the cavity 102. You can stop it.

In addition, the ceramic plate 109 uses electromagnetic waves as a two-dimensional source, which can absorb electromagnetic waves and convert them into far infrared rays.

Another embodiment of the present invention, as shown in Figure 3, by placing the far-infrared generator in the lower portion of the cavity 202 can remove the turntable, motor, rollers, etc. to implement a non-driven microwave oven (not rotating the turntable). Will be.

A turntable is typically used to rotate the food 206 to improve uniform cooking performance in a single microwave oven. In the embodiment of the present invention, the turntable, motor, roller, etc. can be removed because the electromagnetic wave concentration is compensated by far infrared rays. It can be.

As described above, according to the present invention, by providing a far-infrared ray generator in a microwave oven, electromagnetic waves and far-infrared rays can be used simultaneously as a heat source for cooking to improve uniform cooking performance, and a ceramic plate may be provided at no load (when there is no food in the cavity). Absorption of electromagnetic waves can prevent deformation of magnetrons, cavities, turntables, and the like, and can use electromagnetic waves as two-dimensional sources of far infrared rays.

Claims (4)

A cavity forming a cooking space; A turntable mounted to the cavity and placed with food; A motor for driving the turntable; A heater disposed above the inside of the cavity and heated to receive power; In the microwave oven is disposed on one side of the cavity comprising a magnetron for irradiating microwaves to food and a wave guide for guiding the microwaves, The inside of the cavity above the lower side of the heater is mounted to form a ceiling surface of the cavity and at the same time is directly heated by the heat of the heater and a ceramic plate, characterized in that provided with far-infrared radiation for food. The method of claim 1, The ceramic plate is a microwave oven, characterized in that made of a mixture of at least one of serpentine, granite, quartz-bedstone, gneiss, acid tuff, chorionic mica, kaolin, chalcopyrite, bentonite, feldspar, and elvan. A cavity forming a cooking space; A wave guide disposed at one side of the cavity to guide the magnetron and the microwave to irradiate microwaves; A ceramic plate provided below the cavity to form a bottom surface and on which food is placed; And It is mounted on the lower side of the ceramic plate is a microwave oven comprising a heater for heating the ceramic plate to generate heat by receiving power. The method of claim 3, wherein The ceramic plate is a microwave oven, characterized in that made of a mixture of at least one of serpentine, granite, quartz-bedstone, gneiss, acid tuff, chorionic mica, kaolin, chalcopyrite, bentonite, feldspar, and elvan.

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