JPH06257762A - High frequency heater - Google Patents

Abstract

PURPOSE:To prevent propagation of bacteria in heated food processed by a low output cooking such as a long-time defreezing, cooking and heating, by a method wherein ultraviolet rays are emitted into an air guide or a heating chamber from a germicide lamp provided outside the heating chamber. CONSTITUTION:High frequency wave oscillated by a magnetron 1 is supplied through a wave introduction tube 2 into a heating chamber 4 to heat food 5 to be heated. Outside the heating chamber 4, a cooling fan is provided to cool the magnetron 1 and wind generated by the cooling fan 6 is further led along an air guide 7 into the heating chamber 4. Outside the heating chamber 4, a germicide lamp 8 is also provided next to the air guide 7, but they are separated by a transparent member 9, through which ultraviolet rays can pass through. By this, the ultraviolet rays can be emitted into the air guide 7 to kill becteria in the air which enters the heating chamber 4. Thus propagation of bateria can be prevented even in a low output cooking such as a long-time defreezing, cooking and heating.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high frequency heating device.

[0002]

2. Description of the Related Art Conventionally, in a high frequency heating apparatus of this kind, as shown in FIG. 6, a high frequency oscillated from a magnetron 1 as a high frequency oscillating means is introduced into a heating chamber 4 having a door 3 through a waveguide 2. The heated food 5 was supplied and heated by the high frequency.

[0003]

However, in the above configuration, the food 5 to be heated does not reach a temperature high enough for sterilization during thawing cooking or when using a high-frequency heating device having a poor distribution, so thawing cooking for a long time and There is a problem that bacteria may propagate in low-power cooking such as simmering.

The present invention solves the above-mentioned conventional problems, and it is an object of the present invention to provide a high-frequency heating device capable of preventing the growth of bacteria even in low-power cooking such as thawing cooking and stewing for a long time. The purpose of 1.

A second object of the present invention is to provide a high-frequency heating device which irradiates ultraviolet rays to different places with one germicidal lamp.

A third object of the present invention is to provide a high frequency heating device capable of turning on a germicidal lamp for an arbitrary time.

A fourth object is to provide a high frequency heating device for lighting a plurality of germicidal lamps.

[0008]

In order to achieve the above object, the high frequency heating apparatus of the present invention oscillates a high frequency for heating a heating chamber and food to be heated in order to achieve the first object. High frequency oscillating means, a waveguide for supplying high frequency to the heating chamber, a cooling fan for generating wind for cooling the high frequency oscillating means, and an air for guiding the wind generated by the cooling fan to the heating chamber. Guide, a germicidal lamp for sterilizing the air in the air guide, the ultraviolet light provided between the air guide and the germicidal lamp in order to prevent the irradiation efficiency of ultraviolet rays from hitting the germicidal lamp to fall A transparent material that is transparent and a door that is provided in the opening of the heating chamber are provided.

In order to achieve the second object, the present invention provides a heating chamber, a high frequency oscillating means for oscillating a high frequency for heating food to be heated, and a waveguide for supplying the high frequency to the heating chamber. A cooling fan that generates wind for cooling the high-frequency oscillator, an air guide that guides the wind generated by the cooling fan to the heating chamber, and a germicidal lamp for sterilizing the air in the air guide. A first transparent material that transmits ultraviolet rays provided between the air guide and the sterilizing lamp to prevent wind from hitting the sterilizing lamp and lowering the irradiation efficiency of ultraviolet rays, and to prevent water vapor in the heating chamber from escaping. And a second transparent material, which is provided between the heating chamber and the germicidal lamp and is transparent to ultraviolet rays, and a door provided at the opening of the heating chamber.

In order to achieve the third object, the present invention provides a heating chamber, a high frequency oscillating means for oscillating a high frequency for heating food to be heated, and a waveguide for supplying the high frequency to the heating chamber. A transparent material that transmits ultraviolet rays so that water vapor in the heating chamber does not escape, a sterilizing lamp that irradiates the heating chamber with ultraviolet rays through the transparent material, a door provided in the heating chamber opening, and It is provided with a structure having an opening / closing means for turning on / off the sterilization lamp and a control section for controlling the opening / closing means for an arbitrary time.

In order to achieve the fourth object, the present invention provides a heating chamber, a high frequency oscillating means for oscillating a high frequency for heating food to be heated, and a waveguide for supplying the high frequency to the heating chamber. A first transparent material that transmits ultraviolet rays so that water vapor in the heating chamber does not escape, a first germicidal lamp that irradiates the heating chamber with ultraviolet rays through the first transparent material, and A second transparent material that is provided separately from the first transparent material and transmits ultraviolet light so as not to release water vapor; and the first transparent material that irradiates the heating chamber with ultraviolet light through the second transparent material. The second sterilizing lamp provided separately from the second sterilizing lamp and the door provided at the opening of the heating chamber are provided.

[0012]

The high-frequency heating apparatus of the present invention, due to the above-described first structure, can prevent the growth of bacteria by the sterilizing power of ultraviolet rays even in low-power cooking such as thawing and boiling for a long time.

The high frequency heating apparatus having the above-mentioned second structure is
Since it has the first transparent material and the second transparent material,
A single germicidal lamp can be used to irradiate ultraviolet rays both inside the air guide and inside the heating chamber.

The high frequency heating apparatus having the above-mentioned third structure is
Since it is possible to control the sterilization lamp to be turned on for an arbitrary period of time, it is possible to irradiate ultraviolet rays into the heating chamber even during cooking.

The high-frequency heating device having the above-mentioned fourth structure is
Since the first sterilizing lamp and the second sterilizing lamp are provided, it is possible to reduce unevenness of ultraviolet irradiation in the heating chamber.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. Incidentally, the same parts as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted.

FIG. 1 shows a high-frequency heating apparatus according to this embodiment, in which high-frequency waves oscillated from a magnetron 1 as high-frequency oscillating means are supplied into a heating chamber 4 via a waveguide 2.
The food 5 to be heated is heated. A cooling fan 6 for cooling the magnetron 1 is provided outside the heating chamber 4, and the air generated by the cooling fan 6 is guided into the heating chamber 4 via an air guide 7. A germicidal lamp 8 is provided outside the heating chamber 4 adjacent to the air guide 7. The germicidal lamp 8 and the air guide 7 are separated by a transparent material 9 that transmits ultraviolet rays. A door 10 is provided at the opening of the heating chamber 4, and a window 10 of the door 10 is made of glass 10 that does not transmit ultraviolet rays.
Materials such as a are used.

In this embodiment, ultraviolet rays are radiated into the air guide 7 even in low-power cooking such as thawing cooking or simmering for a long time to kill bacteria in the air that constantly enter the heating chamber 4. Can be prevented from breeding. Further, by using a material such as glass 10a that does not transmit ultraviolet rays for the window portion of the door 10, it is possible to prevent the ultraviolet rays leaked inside the heating chamber 4 from affecting the outside.

Next, FIG. 2 shows a high frequency heating apparatus of another embodiment, in which the high frequency oscillated from the magnetron 1 as the high frequency oscillating means is supplied into the heating chamber 4 through the waveguide 2 and heated. The food 5 is heated. A cooling fan 6 for cooling the magnetron 1 is provided outside the heating chamber 4, and the air generated by the cooling fan 6 is guided into the heating chamber 4 via an air guide 7. A sterilizing lamp 8 is provided outside the heating chamber 4, and is made of a material that transmits ultraviolet rays together with the air guide 7, and is a first transparent material for preventing the sterilizing lamp 8 from being hit by wind and lowering the irradiation efficiency of ultraviolet rays. The heating chamber 4 is separated from the heating chamber 4 by a material 11 and is separated from the heating chamber 4 by a second transparent material 12 that does not allow water vapor in the heating chamber 4 to escape. Further, a door 10 is provided at the opening of the heating chamber 4, and the window 10 of the door 10 uses the glass 10a that does not transmit ultraviolet rays.

In the present embodiment, by irradiating both the inside of the air guide 7 and the inside of the heating chamber 4 with ultraviolet rays by using one germicidal lamp 8, bacteria in the air entering the heating chamber 4 and bacteria on the surface of the food to be heated are irradiated. Both can be killed to prevent bacterial reproduction.

Next, FIG. 3 shows a high frequency heating apparatus of another embodiment, in which the high frequency wave oscillated from a magnetron 1 as a high frequency oscillating means is supplied into a heating chamber 4 through a waveguide 2 to be heated. The food 5 is heated. A germicidal lamp 13 is provided outside the heating chamber 4, and is made of a material that transmits ultraviolet rays and is separated from the heating chamber 4 by a transparent material 14 that does not allow water vapor in the heating chamber 4 to escape. A door 10 is provided at the opening of the heating chamber 4, and a glass 10a made of a material that does not transmit ultraviolet rays is used for the window of the door 10. FIG. 4 shows a block circuit diagram of a high-frequency heating apparatus according to another embodiment. The sterilizing lamp 13 is connected with an opening / closing means 17 for turning on / off a power source from an AC power source 15 by a signal from a control section 16. .

In the present embodiment, the control section 16 turns on the opening / closing means 17 at an arbitrary time, so that the sterilizing lamp 13 can be turned on other than during cooking so that the heating chamber 4 can be irradiated with ultraviolet rays.

Next, FIG. 5 shows a high frequency heating apparatus of another embodiment, in which the high frequency oscillated from the magnetron 1 as the high frequency oscillating means is supplied into the heating chamber 4 through the waveguide 2 and heated. The food 5 is heated. A first germicidal lamp 18 is provided outside the heating chamber 4, and is separated from the heating chamber 4 by a first transparent material 19 that does not allow water vapor in the heating chamber 4 to escape. Has been. A second germicidal lamp 20 is provided in another place outside the heating chamber 4, and is made of a material that transmits ultraviolet rays together with the heating chamber 4, and a second transparent material 21 for preventing water vapor in the heating chamber from escaping. Separated by. A door 10 is provided at the opening of the heating chamber 4, and a glass 10a made of a material that does not transmit ultraviolet rays is used for the window of the door 10.

In this embodiment, the first germicidal lamp 18 and the second germicidal lamp 18 are used.
By irradiating the heating chamber 4 with ultraviolet light from both of the sterilizing lamps 20, the unevenness of the irradiation of ultraviolet light in the heating chamber 4 can be reduced.

[0025]

As described above, according to the high frequency heating apparatus of the present invention, even in the case of low power cooking such as thawing cooking and simmering for a long time, by irradiating the air guide with ultraviolet rays, the heating chamber always enters the heating chamber. Bacteria in the air are killed and blown, so that the growth of bacteria can be prevented and hygienic cooking can be performed.

Further, by irradiating both the inside of the air guide and the inside of the heating chamber with ultraviolet rays by one germicidal lamp to kill both the bacteria in the air and the bacteria on the surface of the food to be heated, the bacteria multiply multiply. Can be prevented.

By irradiating the heating chamber with ultraviolet rays for an arbitrary time other than during cooking, it is possible to prevent bacteria in the heating chamber from propagating at times other than during cooking between the previous cooking and the next cooking. be able to.

Irradiation of ultraviolet rays into the heating chamber with a plurality of germicidal lamps to reduce unevenness of irradiation of ultraviolet rays in the heating chamber and the food to be heated can prevent unevenness in sterilization effect.

[Brief description of drawings]

FIG. 1 is a sectional view of a high-frequency heating device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a high frequency heating device according to another embodiment.

FIG. 3 is a cross-sectional view of a high frequency heating device according to another embodiment.

FIG. 4 is a block circuit diagram of a high-frequency heating device according to another embodiment.

FIG. 5 is a sectional view of a high-frequency heating device according to another embodiment.

FIG. 6 is a sectional view of a conventional high-frequency heating device.

[Explanation of symbols]

 1 magnetron (high frequency generating means) 2 waveguide 4 heating chamber 5 food to be heated 6 cooling fan 7 air guide 8 germicidal lamp 9 transparent material 10 door

Claims (4)

[Claims] 1. A heating chamber, a door provided at the opening of the heating chamber, a high frequency oscillating means for oscillating a high frequency for heating food to be heated, and a waveguide for supplying a high frequency to the heating chamber. A cooling fan that generates wind for cooling the high-frequency oscillator, an air guide that guides the wind generated by the cooling fan to the heating chamber, and a germicidal lamp for sterilizing the air in the air guide. A high-frequency heating device comprising: a transparent material, which is provided between the air guide and the germicidal lamp and is transparent to ultraviolet rays, in order to prevent the germicidal lamp from being hit by wind and lowering the irradiation efficiency of the ultraviolet ray. 2. A heating chamber, a door provided at the opening of the heating chamber, a high frequency oscillating means for oscillating a high frequency for heating food to be heated, and a waveguide for supplying the high frequency to the heating chamber. A cooling fan that generates wind for cooling the high-frequency oscillator, an air guide that guides the wind generated by the cooling fan to the heating chamber, and a germicidal lamp for sterilizing the air in the air guide. A first transparent material that transmits ultraviolet rays provided between the air guide and the sterilizing lamp to prevent wind from hitting the sterilizing lamp and lowering the irradiation efficiency of ultraviolet rays, and to prevent water vapor in the heating chamber from escaping. A high-frequency heating device having a second transparent material, which is provided between the heating chamber and the germicidal lamp and transmits ultraviolet light. 3. A heating chamber, a door provided at the opening of the heating chamber, a high frequency oscillating means for oscillating a high frequency for heating food to be heated, and a waveguide for supplying the high frequency to the heating chamber. , A transparent material that transmits ultraviolet rays so as not to escape water vapor in the heating chamber, a germicidal lamp that radiates ultraviolet rays into the heating chamber through the transparent material, and the germicidal lamp is turned off,
A high-frequency heating device having an opening / closing means that is turned on and a control section that controls the opening / closing means. 4. A heating chamber, a door provided at the opening of the heating chamber, a high frequency oscillating means for oscillating a high frequency for heating food to be heated, and a waveguide for supplying the high frequency to the heating chamber. A first transparent material that transmits ultraviolet rays to prevent water vapor in the heating chamber from escaping, and a first germicidal lamp that irradiates the heating chamber with ultraviolet rays through the first transparent material;
Irradiation of ultraviolet rays into the heating chamber through the second transparent material, which is provided separately from the first transparent material and transmits the ultraviolet rays, in order to prevent water vapor in the heating chamber from escaping, and the second transparent material. A high-frequency heating device comprising a second germicidal lamp provided separately from the first germicidal lamp.