JPS6362662B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composite cooking device having at least two types of cooking functions: a high frequency cooking function and a grill cooking function.

Conventionally, as shown in FIG. 1, this type of cooking device has been equipped with a magnetron c in a cooking device main body b that has a built-in heating chamber a, and a high-frequency radio wave from the magnetron c that is stirred and irradiated into the heating chamber a. A radio wave irradiation chamber e having an internal stirrer antenna d, and a radiant heat source f for irradiating heat rays into the heating chamber a are disposed,
It is known that the high-frequency radio waves irradiated from the radio wave irradiation chamber e are used to perform high-frequency cooking of the food stored in the heating chamber a, and the heat rays from the radiant heat source f are used to grill the food. However, in this case, the radio wave irradiation chamber e and the radiant heat source f are generally placed separately.According to this, for example, the radiant heat source f is placed on the top surface of a heating cabinet suitable for uniformly heating the food. If it is placed in the center, the position of the radio wave irradiation chamber e will be shifted from the center, and the uniformity of heating during high wave cooking will be impaired. Therefore, there is also a heating chamber with a high-frequency discharge port equipped with a fan in the center of the upper surface and a heater as a heat source installed around it.
As is known from the above publication, the arrangement of the heaters has to be shifted, and in any case, it is difficult to achieve uniform heating in both grill cooking and high frequency cooking.

It is an object of the present invention to provide a cooking device which can eliminate such inconveniences and provide uniform heating in any cooking process. As shown in the example,
A radio wave irradiation chamber 5 having a magnetron 3 and an internal stirrer fan 4 for stirring and irradiating high frequency radio waves from the magnetron 3 into the heating chamber 1 is provided in a cooking device main body 2 containing a heating chamber 1; In the case where a radiant heat source 6 for irradiating heat rays is arranged in the heating chamber 1, the radiant heat source 6 is constituted by a gas infrared burner having a housing-shaped burner body 8 with a combustion surface 7 on one side. The heating chamber 1 at the combustion surface 7
The stirrer fan 4 is housed in the internal space of the burner main body 8, and the internal space is configured as the radio wave irradiation chamber 5.

In addition, in the illustrated one, there is a heating chamber 1 inside the cooking device main body 2.
A gas burner 9 is housed on the lower side of the oven, and combustion hot air generated by the burner 9 is sucked and circulated into the heating chamber 1 by a fan 10 at the back of the heating chamber 1, so that oven cooking can also be performed.

Further, the combustion surface 7 shown in the figure and described above is constructed of a ceramic plate having a large number of flame holes through which high-frequency radio waves can pass.

In the drawing, reference numeral 11 denotes a waveguide that guides high-frequency radio waves from the magnetron 3 to the radio wave irradiation chamber 5 formed by the internal space of the burner body 8, and 12 denotes a waveguide of the burner body 8 to drive the stirrer fan 4 in the chamber 5. The windmill 12 is configured to be rotated by the cooling air from the cooling fan 13 of the magnetron 3, and the rotation of the windmill 12 is caused by the rotation by the magnet 14 attached to the lower surface of the windmill. A magnetic field is generated, and the stirrer fan 4 made of a conductor is rotated in accordance with the magnetic field. Unlike the case where the shaft is connected, there is no need for a gas seal at the shaft penetration part, which is advantageous.

In the drawing, 15 indicates a mixing pipe connected to the burner body 8.

Next, to explain its operation, during high-frequency cooking, high-frequency radio waves guided from the magnetron 3 to the radio wave irradiation chamber 5 in the burner body 8 through the waveguide 11 are stirred by the stirrer fan 4 and the combustion surface 7 is agitated. During grill cooking, the air-fuel mixture supplied into the burner body 8 through the mixing pipe 15 is combusted on the combustion surface 7, heated to red heat, and from there is irradiated into the heating chamber 1. Heat rays are irradiated inside.
In this way, the high-frequency radio waves and the heat rays are irradiated into the heating chamber 1 from the same position, and uniform heating of the food can be obtained in any cooking process.

In this case, it is advantageous to operate the cooling fan 13 and drive the stirrer fan 4 as described above during grill cooking, since the fan 4 promotes mixing of the air-fuel mixture within the burner body 8.

FIG. 4 shows that the internal space of the burner body 8 is gas-sealed and partitioned into two upper and lower chambers by a partition plate 16 made of radio-transparent ceramic material, with the lower chamber serving as a gas chamber connected to the mixing tube 15, and the upper chamber In this embodiment, the stirrer fan 4 is housed in the radio wave irradiation chamber 5, and the stirrer fan 4 is mechanically connected to the wind turbine 12 outside the burner body 8 by a shaft 17 passing through the burner body 8. However, since the partition plate 16 provides a gas seal, no gas leakage occurs through the penetrating portion of the shaft 17.

As described above, according to the present invention, a gas infrared burner is used as the radiant heat source 6, and the internal space of the burner body 8 is configured as the radio wave irradiation chamber 5 that accommodates the stirrer fan 4, and the radiant heat source 6 and the radio wave irradiation chamber 5 are arranged at the same position, and the radiant heat source 6
It is possible to emit high frequency waves through the combustion surface 7, that is, from the same location as the radiation position of the heat rays, and by setting this arrangement position to a position suitable for uniform heating of the food, high frequency cooking can be achieved. Uniform heating can be obtained in both grill cooking, and since a separate casing for the radio wave irradiation chamber 5 is no longer required, the number of parts is reduced, and an inexpensive cooker with a simple structure can be obtained. It has the effect of

[Brief explanation of drawings]

Fig. 1 is a cutaway front view of a conventional example, Fig. 2 is a cutaway side view of one example of the cooking device of the present invention, Fig. 3 is a cutaway side view of the main part thereof, and Fig. 4 is a main part of another embodiment. FIG. 1... Heating chamber, 2... Cooking device body, 3... Magnetron, 4... Star fan, 5... Radio wave irradiation chamber, 6... Radiant heat source, 7... Combustion surface, 8... Burner body.

Claims (1)

[Claims] 1. A radio wave irradiation chamber 5 having a magnetron 3 and an internal stirrer fan 4 that stirs high frequency radio waves from the magnetron 3 and irradiates the inside of the heating chamber 1, in a cooking device main body 2 containing a heating chamber 1; In the case where a radiant heat source 6 for irradiating heat rays is arranged in the heating chamber 1, the radiant heat source 6 is constituted by a gas infrared burner having a burner body 8 in the form of a case with one side as a combustion surface 7. The combustion surface 7 faces into the heating chamber 1, and the stirrer fan 4 is accommodated in the internal space of the burner body 8, so that the internal space is configured as the radio wave irradiation chamber 5. Composite cooker.