JPS61250989A - Heating cooker - 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 cooking device that heats an object to be heated in a heating chamber using a heater, such as an electric stove or a microwave oven with a heater.

Conventional technology FIG. 4 is a sectional view showing a conventional heating cooker.

In FIG. 4, the heating chamber 1 is provided with an upper heater 2 at the upper part and a lower heater 3 at the lower part, and the food 6 placed on the saucer 4 is heated by the heater and cooked.
1 shows a so-called combined heating oven using a heater and radio waves, in which radio waves are irradiated into the heating chamber 1 through a waveguide 7 to heat food 6 using radio waves.

FIG. 6 is a perspective view of a heater used in a conventional heating cooker. Problems to be Solved by the Invention However, in such a conventional heating cooker, the upper heater 2 and Since the lower heater 3 is exposed in the heating chamber 1, the effective volume of the heating chamber is reduced by this amount, which has the disadvantage of making it difficult to heat large foods.

In addition, in order to be able to store large foods, the heating chamber needs to be enlarged by the size occupied by heaters 2 and 3, and the external size also increases, requiring a large installation space, making it difficult to use as a heating cooker. It had become.

Furthermore, if the heaters 2 and 3 are exposed in the heating chamber 1, even if food stains are scattered on the wall of the heating chamber 1,
The heater got in the way and was difficult to clean, making it inconvenient to use.

There was also a configuration in which the heater was placed outside the heating chamber, but in this case, the heat of the heater was not efficiently transferred into the heating chamber, resulting in poor thermal efficiency, and this was only possible in very limited cases, such as when there was sufficient electrical capacity. It was only put into practice.

In this case as well, energy loss was large, which was not preferable from the point of view of energy saving and was not practical.

The present invention solves these conventional problems and provides a cooking device that has excellent thermal efficiency, is easy to use by cleaning the heating chamber 9, and has good heating performance.

Means for Solving the Problems The heating cooker of the present invention has a heating chamber for storing food and a heating element, and has a structure in which the heating element is brought into close contact with the outer surface of the heating chamber wall via a heat-resistant insulator. The wall surface is composed of a metal plate with an aluminum layer formed on at least the wall surface facing the heating element.

Function The heating cooker of the present invention has an aluminum layer formed on the surface of the metal plate constituting the heating chamber wall, so that after the heat of the heating element is conducted to the heating chamber wall through the heat-resistant insulator, the aluminum layer is formed on the surface of the metal plate constituting the heating chamber wall. Sufficient heat conduction is achieved in the layered portions, and the temperature of the heating chamber wall surface is quickly uniformized. Since heat conduction occurs over the entire wall surface of the heating chamber, heat on the outer wall surface of the heating chamber is effectively conducted to the inner wall surface of the heating chamber, thereby heating the inside of the heating chamber. Due to this effect, food can be effectively heated even if the heating element is provided outside the heating chamber. Of course, since the heat distribution is uniform, even baking can be achieved.

Furthermore, since there is no need for an exposed heater inside the heating chamber, the effective volume within the heating chamber is increased, and the container can be used for cleaning, thereby improving usability.

EXAMPLE Hereinafter, a heating cooker according to an example of the present invention will be explained with reference to the drawings.

FIG. 1 is a front sectional view showing the structure of the cooking device according to the present invention. In FIG. 1, an upper heater 13 is provided in close contact with the outer surface of a clay wall surface 12 constituting a heating chamber 11, and a lower heater 15 is provided in close contact with a lower wall surface 14. Furthermore, a magneto/16 which is an oscillator is provided, and radio waves are irradiated into the heating chamber 11 from an opening 18 via a waveguide 17.

Food 20, which is an object to be heated, is placed in the saucer 19. Further, 21 and 22 are heat insulating materials for shielding the heat of the heaters 13 and 1g.

FIG. 2 shows the heater 13.1 of the cooking device according to the present invention.
FIG. 3 is an enlarged partial cross-sectional view showing the configuration of the heater portion of the heating cooker.

In FIGS. 2 and 3, a heating element 26 is wound around a winding frame 26 made of a heat-resistant insulator such as mica.

27 is a lead wire, connects it to the heating element 26, and connects it to the guy 72.
It is insulated with 8 mag.

Insulating plates 29 made of a heat-resistant insulating material such as mica are provided on the upper and lower surfaces of the winding frame 26, and the heating element 26 is sandwiched between the insulating plates 29. A metal holding plate 30 is provided on the upper surface of the insulating plate 29 and is fixed to the heating chamber main body 32 with screws 31. The heating chamber wall surface 33 facing the heating element 26 is made of a metal plate such as an iron plate, and an aluminum layer 34 is formed on the upper surface thereof. Although the aluminum layer 34 is necessary at least on the upper surface, providing it on both sides of the heating chamber wall surface 33 will further enhance the effect. 36 is a heat insulating material for preventing the heat of the heating element 26 from escaping to the outside.

Effects of the Invention As described above, according to the high frequency heating device according to the present invention,
The following effects can be achieved.

(1) The heat of the heating element is transferred to the heating chamber wall through the insulating plate, but when the heat of the heating element is transferred to the aluminum layer, the heat is evenly transferred to the entire surface through the aluminum layer. It gets heated. Therefore, the next heat transfer from the aluminum layer to the metal plate constituting the heating chamber wall occurs over the entire surface of the metal plate, and the larger the heat transfer area, the better the heat conduction.

(2) Since the heat conduction is good, the heat of the heating element efficiently heats the wall surface of the heating chamber, so even if the heating element is installed outside the heating chamber, it can be heated sufficiently efficiently. Therefore, compared to conventional systems in which a heating element is provided outside and a large amount of electric power is applied for heating, the thermal efficiency is higher, and less electric power is required, resulting in energy saving and economical.

(3) Compared to the conventional configuration in which the heater is installed inside the heating chamber, the heating chamber has a clean shape with fewer irregularities, and even if the heating chamber wall becomes dirty due to food scattering, it is easy to wipe, making it easy to clean and extremely user-friendly. Get better.

(4) Since the heater does not protrude into the heating chamber, the effective volume within the heating chamber increases, allowing even large foods to be cooked. Furthermore, if the volume of the heating chamber is the same, the external size can be made smaller than before, making it possible to create a compact and easy-to-use heating cooker that does not take up much space. Since the heat spreads over the entire surface through the metal plate on the wall of the heating chamber, when the heat distribution is even, it also has the effect of reducing the loss of high frequency surface current flowing through the wall, and the loss to radio waves is extremely high.

(7) Since the aluminum layer is formed on the surface, it has excellent corrosion resistance and can realize a durable and robust heating cooker.

In addition, the material of the metal plate can be iron plate, etc., and the material cost is lower than using stainless steel plate, etc., and the processability is excellent, so it is extremely economical.

As stated above. Although this invention has a simple structure, it has many important effects as a heating cooker.

[Brief explanation of the drawing]

Figure 3 is a partial sectional view showing the configuration of the heater section, Figure 4 is a partial sectional view showing the configuration of the heater section.
The figure is a sectional view of a conventional heating cooker, and FIG. 5 is a perspective view of the heater of the same cooker. 26010001 Winding frame, 26... Heating element, 29
...Insulator, 30...Press plate, 33.
... Heating chamber wall surface, 34 ... Aluminum layer.

Claims (1)

[Claims] The heating chamber has a heating chamber that stores an object to be heated, and a heating element that is in close contact with the outer surface of the heating chamber wall through a heat-resistant insulator, and the heating chamber wall has an aluminum layer on at least the surface of the wall facing the heating element. A heating cooker made of formed metal plates.