KR20000003795U - Microwave Oven with Round Cavity - Google Patents

Abstract

Microwave oven according to the present invention has a cavity consisting of a circular side wall. By this circular cavity, heating energy including at least light energy incident into the cavity may be intensively reflected toward the food in the center portion. The bottom surface of the cavity is configured to have a concave lens shape so that the light energy reflected by the bottom surface is also concentrated toward the food in the center portion.

Description

Microwave Oven with Round Cavity

The present invention relates to a microwave oven, and more particularly, to a microwave oven configured to more efficiently reflect the light generated from the light emitting lamp inside the cavity of the microwave oven using the light emitting lamp as a heating source.

Various kinds of apparatuses have been proposed to date as heating apparatuses for heating foods. The most primitive heating mechanism is a container of a predetermined shape in direct contact with a heat source, and the contents to be cooked are placed in such a container, and the desired cooking is performed by applying heat.

The microwave oven is a cooking apparatus in which microwaves are generated using electricity, and the microwaves penetrate into a cooking object and cause molecular motion inside the object, thereby heating. Such microwave ovens are widely used for simple heating, for example, a thawing process for dissolving frozen food or a device for heating food such as milk to a predetermined temperature due to its simple configuration and ease of use. It is used.

However, in the conventional microwave oven using only microwaves as a heating source, since the unity of the heating method by microwaves and its output have a certain limit, a certain limitation in cooking is pointed out.

For these current microwave ovens, various types of microwave ovens using different heat sources have been developed and commercialized. For example, a microwave oven capable of performing appropriate heating on various cooking objects may be mentioned by attaching a convection heater, which can be said to be another heat source, separately from the microwave.

In addition, a microwave oven using light waves as a heating source has been proposed. That is, by using a lamp having a wavelength of at least 90% of the radiant energy of 1 μm or less as a heating source, by appropriately using the visible light and infrared rays emitted from such a lamp, the characteristics of the surface and the inside of the heating object can be adjusted. It is to be able to perform heating while keeping enough power. Halogen lamps are mentioned as an example of such a heating source.

The difference between the wavelengths of the infrared light and the visible light is represented by the difference in the heating method by the different wavelengths applied to the object, and the outside and the inside of the object are heated in different forms by this difference. Using such a halogen lamp, for example, in the case of pizza, it is possible to obtain a cooking state in which the outside has a crisp heating degree and the inside is sufficiently heated and softly heated with a predetermined moisture. .

Figure 1 shows a conventional microwave oven using such a halogen lamp as another heating source. As shown in the figure, a halogen lamp 12 which is an example of a light emitting lamp is provided on the upper surface 10 of the cavity 2 of the microwave oven.

The reflection plate 14 is installed above the halogen lamp 12 to reflect the light waves generated upward from the halogen lamp 12 into the lower cavity 2. A plurality of transmission holes 16 are formed on the upper surface of the cavity 2 in which the halogen lamp 12 is provided.

In addition, a turntable (not shown) is installed in the cavity 2 to place food to be heated. The cavity 2 of the conventional microwave oven is comprised by the hexahedral accommodating space whose cross section of one side surface is rectangular as shown. Thus, the main reason for forming the cavity 2 to have a rectangular cross section is due to the workability of the cavity.

In the radiant heat heating method using a halogen lamp or the like as described above, the light generated from the halogen lamp 12 is incident into the cavity and is incident on food, and the heating proceeds, but is substantially generated by the halogen lamp 12. The reflection of light is followed by the incident on the food. Of the light applied to the food, the amount of light applied through the reflection as described above is a considerable amount.

However, as described above, constituting the inside of the cavity 2 in the shape of a cube has a considerably inefficient element in terms of reflection of light. That is, the light incident into the cavity 2 is most preferably reflected toward the food located in the central portion, but the reflection angle is based on the angle of incidence since each surface constituting the cavity 2 is in a planar state. This is determined, and thus it is often not reflected toward the food located at the center. As such, the reflection path reflected by the side and bottom surfaces of the planar state causes light loss, and furthermore, considering the fact that a certain amount of light is lost in the reflection path, such a hexahedral cavity is particularly unreasonable.

The present invention is to solve the above-mentioned problems, it is to provide a microwave oven that can minimize the light loss for heating by having a reflective structure that can reflect light intensively toward the food inside. .

1 is a perspective view illustrating a configuration of a conventional microwave oven.

2 is a partial cutaway perspective view of the microwave oven according to the present invention.

3 is a schematic side view of a microwave oven according to the present invention;

Explanation of symbols on the main parts of the drawings

20 ..... Cavity 21 ..... Top View

22 ..... side 23 ..... bottom

24 ..... halogen lamps 30 ..... turntables

F ..... Food

A microwave oven according to the present invention for achieving the above object includes a cavity having a circular cross-sectional side wall, and heating means for supplying energy for heating the cavity, wherein the heating energy supplied from the heating means is circular It is reflected by the side wall of the central portion.

The bottom surface of the cavity is formed in a concave lens shape, so that the reflection from the bottom surface is directed toward the food located at the center.

And the heating means comprises a light emitting lamp which emits light of at least a predetermined wavelength, more specifically a halogen lamp.

According to the present invention as described above, the heating energy, for example, light energy incident to the inside of the cavity is mainly reflected toward the food, it can be expected to increase the energy use efficiency and at the same time save the edge Hereinafter, the present invention will be described in more detail with reference to the embodiments shown in the drawings.

2 and 3 are partially cutaway perspective views and cross-sectional views of the microwave oven according to the present invention, respectively. As shown, according to the present invention, the cavity 20 is molded to have a circular shape as a whole.

First, the side wall 22 constituting the cavity 20 will be described. As shown in FIG. 2, the cross section is formed to have a circular shape. As such, by forming the cavity 20 to have a circular cross section, most of the light is reflected toward the center when the light supplied to the inside is reflected by the side wall 22.

The upper surface 21 of the cavity 20 is provided with a light emitting lamp, for example, a halogen lamp 24, and the upper surface of the halogen lamp 24 emits light from the halogen lamp 24 in a circular cavity 20. The reflecting plate 26 for reflecting inside is provided. Therefore, the light generated from the halogen lamp 24 is directly or reflected by the reflecting plate 26 is incident into the cavity 20. Thus, part of the light reflected into the cavity 20 is irradiated with food (F), and the other part is reflected by the circular side wall 22 of the cavity 20. Most of the light reflected from the circular side wall 22 is incident toward the food F placed on the turntable 30 installed at the center of the cavity 20. As such, according to the present invention, the light reflected by the side wall 22 is configured to be reflected toward the food F positioned at the center so that the utilization of the light energy supplied into the cavity becomes higher.

Next, the bottom 23 of the cavity 20 according to the present invention will be described with reference to FIG. 3. As shown in the figure, the bottom face 23 by this invention is comprised so that it may have a concave shape as seen from a cross section. When viewed in plan view, the bottom surface 23 is configured to have a concave lens shape as a whole, and the light reflected from the bottom surface 23 on the concave lens is to be focused toward the food (F) at the top. As described above, according to the present invention, not only the side surface 22 of the cavity described above, but also the bottom surface 23 is formed in a concave lens shape so that the light reflected from the bottom surface 23 is placed on the turntable 30. It is configured to be concentrated toward (F).

As described above, according to the present invention, the basic technology is to configure the side and bottom of the inside of the cavity in which the food F is heated so that the light reflected by the food F may be reflected toward the food F located at the center. It can be seen that it is thought. It can be seen that other modifications are possible within the range configured to be reflected toward the food (F). For example, in the illustrated embodiment, the upper surface 25 of the cavity is illustrated as being flat, but the upper surface 25 may also be embodied in a concave lens shape.

The present invention has the following effects by configuring the surface constituting the interior of the cavity to have a structure that can be reflected toward the food (F) located in the central portion.

First, since the light reflected from inside the cavity is mainly reflected toward the center thereof, it can be seen that the amount of light incident on the food F is substantially increased. In this way, when the amount of light incident on the food F is large, the cooking time is shortened, and thus the cooking can be performed more quickly.

And since most of the light reflected inside the cavity is directed toward the food F, there is less energy loss inside the cavity. That is, it can be seen that the light energy reflected and lost to unnecessary parts is minimized, thereby minimizing heat loss and maximizing energy efficiency.

In addition, since the light energy is substantially reflected toward the center in the cavity, the light energy applied to components around the cavity is minimized. By minimizing the energy applied to the peripheral parts in this way, a side effect of preventing thermal damage of the peripheral parts is also expected.

Claims (3)

A cavity having a circular cross-sectional sidewall; Heating means for supplying energy for heating the cavity; Microwave oven, characterized in that the heating energy supplied from the heating means is reflected to the center by a circular side wall The microwave oven according to claim 1, wherein the bottom surface of the cavity is formed in a concave lens shape. 3. A microwave oven according to claim 1 or 2, wherein said heating means comprises a light emitting lamp which emits light of at least a predetermined wavelength.