JP2687672B2 - Combined cooking device - Google Patents

Description

TECHNICAL FIELD The present invention relates to both a heater and an electric wave configured to heat the air used for cooling an electric component with a heater to generate hot air, and to raise the temperature in the heating chamber with this hot air. TECHNICAL FIELD The present invention relates to a composite heating cooker capable of cooking with heat.

2. Description of the Related Art Microwave ovens have the advantage of being able to heat food in a short time, but since they have the drawback of not being burnt to food, these days, by incorporating a heater, heating of food and Efforts are being made to combine the two functions of browning food.

Next, a conventional microwave oven with a built-in heater will be described with reference to FIG.

In the combined cooking device having both the grill function by the electric heater 24 and the microwave function by the radio wave generated by the high frequency oscillator 23, in the grill cooking mode, or
In the mode of cooking by operating the radio wave and the grill simultaneously or alternately, the cooling fan 23 is operated in order to cool the components in the electric room and lower the temperature of the exterior part of the product.

The air blown by the cooling fan 23 cools the electrical components and the like and then heats the chamber.
The steam generated from the food 20 to be cooked is introduced into the heating chamber.
It was configured to discharge to 22.

Problems to be Solved by the Invention Originally, grill cooking is performed by baking the surface of the food 20 with strong infrared rays generated from the electric heater 24.
The ambient temperature of the food 20 must be raised to some extent in order to heat the center of the food.

However, as described above, when the air after cooling the electric parts is put into the heating chamber 22 during the grill cooking, the inside of the heating chamber 22 is cooled and the ambient temperature of the food 20 is lowered, so that the grill cooking cannot be performed well and the cooking time is longer. There was a problem that it became long.

There is also a method of closing the air intake of the heating chamber 22 with a shutter at the time of grill cooking so that the air after cooling the electric parts does not enter the heating chamber 22 in order not to lower the ambient temperature of the food 20. In this case, since the steam generated from the food cannot be forcibly discharged, a film of steam is formed on the surface of the food 20, which makes it difficult for infrared rays to be absorbed by the food 20, and there is a problem that the grill cannot be properly cooked. .

Also, in order to keep the temperature of the food 20 as low as possible, it is necessary to reduce the amount of air blown into the heating chamber 22 as much as possible. In this case, the steam generated from the food 20 is discharged to the outside of the heating chamber 22. There was also a problem that the exhaust could not be exhausted sufficiently, and the window part of the door became cloudy and invisible during cooking with only high frequency.

Therefore, the composite heating cooker of the present invention is a heating chamber for heating and cooking food, a door provided in front of the heating chamber, a high-frequency oscillator for supplying radio waves to the heating chamber, and an electric heater. A reflector for reflecting the infrared rays of the electric heater to the heating chamber; an opening provided at a height between the electric heater and the reflector on a rear wall surface of the reflector; A cooling fan that cools the high-frequency oscillator, a ventilation path that guides the wind from the cooling fan to the opening of the reflection plate, the electric heater and the reflection plate are located closer to the door than the center in the front-rear direction of the upper wall of the heating chamber. The air from the cooling fan passes through the opening, is heated by the electric heater, and then enters the heating chamber through the vicinity of the door on the upper wall of the heating chamber.

Action With this configuration, in the composite heating cooker of the present invention, the air after cooling the electric parts is heated by flowing on the surface of the electric heater and is changed into hot air. Therefore, conventionally, the cold air enters the heating chamber to cool the heating chamber, but the hot air entering causes the temperature of the heating chamber to rise uniformly and the ambient temperature of the food to rise.

Further, hot air flows into the heating chamber and then flows along the inner wall of the door.

Example Hereinafter, a composite heating cooker according to an example of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the high frequency oscillator 1 is configured to supply radio waves into the heating chamber 2 and to be cooled by the cooling fan 3.

The electric heater 4 is attached to the upper part outside the heating chamber 2 and the heating chamber 2
Infrared rays generated by arranging in the front direction from the center in the front-back direction are radiated into the heating chamber through an opening 5 provided in a surface of the upper wall of the heating chamber 2 facing the electric heater 4. In addition, the electric heater 4 is continuously turned on during grill cooking,
It is controlled by a control circuit (not shown) so that it is turned on intermittently even when cooking only by high-frequency heating.

The reflection plate 6 is provided above the electric heater 4 and the electric heater 4
Infrared rays are efficiently reflected into the heating chamber.

An opening 7 is provided on the rear wall surface of the reflection plate 6. The air blown by the cooling fan 3 cools the high-frequency oscillator 1 and then the air passage 8
After passing through the opening 7 of the reflection plate 6 into the reflection plate and flowing between the electric heater 4 and the reflection plate 6 to be heated by the electric heater 4 to become hot air, the upper wall of the heating chamber 20 is opened. It enters the heating chamber 2 from the part 5 and flows along the inner wall of the door 13.

On the food placing table 9, a slatting net 11 for bringing the heated food 10 close to the electric heater 4 is placed. Food placing table 9
Is rotated by a turntable motor 12.

Next, the effect of the combined heating cooker according to the present embodiment will be described.

Since the air after cooling the electric parts is heated by the electric heater and turned into hot air and then put into the heating chamber, the vapor film on the food surface can be removed, and at the same time the atmospheric temperature of the food can be raised. The whole food including the side part and the central part of the food can be grilled in a well-balanced manner together with the irradiated infrared rays.

In addition, by blowing air between the reflector and the electric heater, the oil scattered from the food is prevented from adhering to the reflector and the reflector is prevented from becoming dirty, so that the reflection efficiency of the reflector does not decrease. , Can maintain cooking performance during the prayer period.

Furthermore, the temperature of the reflection plate can be lowered by passing air between the reflection plate and the electric heater. Therefore, the space between the upper surface of the exterior of the product and the reflection plate can be reduced to reduce the height of the entire product. Even if it is compact, the temperature of the upper surface of the exterior of the product can be lowered, and a safe product that prevents the risk of burns can be provided.

Further, by providing all of the electric heater, the reflection plate, the opening of the upper wall of the heating chamber, etc. in the front direction from the center of the heating chamber,
Since the wind that has entered the heating chamber is made to flow along the inner wall of the door, it is possible to prevent the window portion of the door from being fogged by the steam generated from the food.

Further, the effect of preventing fogging of the door window can be further enhanced by intermittently turning on the electric heater to raise the temperature of the wind even when cooking only by high-frequency heating.

EFFECTS OF THE INVENTION As is clear from the above description of the embodiments, according to the composite heating cooker of the present invention, the air used for cooling the electric parts is heated by the heater to be hot air, and the temperature inside the heating chamber is increased by the hot air. By raising, the whole food can be cooked in good balance.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a composite heating cooker according to an embodiment of the present invention, and FIG. 2 is a vertical sectional view of a conventional composite heating cooker. 1 ... High-frequency oscillator, 2 ... Heating chamber, 3 ... Cooling fan, 4 ... Electric heater, 5 ... Opening of upper wall of heating chamber, 6
...... Reflector, 7 …… Reflector opening, 8 …… Ventilation passage, 10
…… Heated food, 13 …… Door

Claims (1)

(57) [Claims] 1. A heating chamber for heating and cooking food, a door provided in front of the heating chamber, a high frequency oscillator for supplying radio waves to the heating chamber, an electric heater, and infrared rays of the electric heater. A reflection plate for reflecting the reflection plate, an opening provided on the rear wall surface of the reflection plate at a height between the electric heater and the reflection plate, a cooling fan for cooling the high-frequency oscillator, and the cooling device. An air passage for guiding the wind from the fan to the opening of the reflection plate, the electric heater and the reflection plate are located closer to the door than the center in the front-rear direction of the upper wall of the heating chamber, and the wind from the cooling fan passes through the opening. A composite cooker configured to enter the heating chamber through a vicinity of a door on the upper wall of the heating chamber after being heated by the electric heater.