JPH062858A - Microwave oven - Google Patents

Abstract

PURPOSE:To obtain a microwave oven capable of preventing the growth of germ on a food to be thawed even when thawing lasts for a long period of time. CONSTITUTION:A microwave oven consists of a heating compartment 4, a high-frequency oscillator which generates high-frequency waves to heat food 5, a wave guide 2 which supplies high-frequency waves into the heating compartment 4, an ultraviolet-lay permeable film 7 to prevent steam from escaping, a sterilizing lamp 6 which radiates ultraviolet lays into the heating compartment 4 through the film 7, and a door 8 which is mounted on a heating compartment opening 4a and uses an ultraviolet-lay non-permeable glass pane 8a.

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 A conventional high-frequency heating device will be described with reference to FIG. The high frequency oscillated from the magnetron 1 as the high frequency oscillating means is supplied to the heating chamber 4 having the door 3 via the waveguide 2, and the food 5 is heated by the high frequency.

[0003]

However, in this configuration, for example, when there are many foods 5 during thawing and cooking, the temperature is not high enough for sterilization, so there is a risk that bacteria will grow during thawing for a long time. is there. Further, even in general heating, if the distribution of power supply is poor, there is a risk that the temperature does not become partly high and bacteria propagate.

A first object of the present invention is to provide a high-frequency heating device capable of preventing bacterial growth even during long-term thawing cooking.

A second object is to provide a high-frequency heating device having a safety means for mechanically turning off the germicidal lamp when the door is open, and a third object is to control sterilization when the door is open. It is to provide a high-frequency heating device having a safety means for turning off the lamp, and a fourth object is to provide a dual safety means connected in series for turning off the germicidal lamp mechanically and controllably in the door open state. A fifth object of the present invention is to provide a high-frequency heating device capable of performing control to turn on a germicidal lamp only for a predetermined time, and a sixth object thereof is to provide a high-frequency heating device having the same. It is an object of the present invention to provide a high-frequency heating device capable of controlling lighting of a sterilizing lamp only for certain applications such as thawing and lighting of a normal oven lamp during other cooking.

[0006]

In order to achieve the above first object, a high frequency heating apparatus of the present invention comprises a heating chamber, a high frequency oscillating means for oscillating a high frequency for heating food, and a high frequency for the heating chamber. A waveguide to supply, a film that transmits ultraviolet rays so that water vapor in the heating chamber does not escape, a sterilization lamp that irradiates ultraviolet rays into the heating chamber through the film, and a heating chamber opening that does not transmit ultraviolet rays. It is equipped with a door made of glass.

In order to achieve the second object, the high frequency heating apparatus of the present invention comprises a high frequency oscillating means for oscillating a high frequency for heating the heating chamber and the food, and a waveguide for supplying the high frequency to the heating chamber. A film 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 film, and the heating chamber opening is provided.
A high-frequency heating device according to the present invention is provided with a heating chamber, which is provided with a door made of glass that does not transmit ultraviolet rays and a door switch that turns on and off a germicidal lamp when the door is opened and closed. And a high-frequency oscillating means for oscillating a high-frequency for heating food, a waveguide for supplying a high-frequency to the heating chamber, a film that transmits ultraviolet rays to prevent water vapor in the heating chamber from passing, and a heating chamber through the film A sterilizing lamp that irradiates ultraviolet rays to the
A door using glass that does not transmit ultraviolet rays, a door opening / closing determination means for determining the opening / closing of the door, an on / off means for turning on / off the germicidal lamp, and a control unit for controlling the on / off means by a signal from the door opening / closing determination means. In order to achieve the fourth object, the high frequency heating device of the present invention comprises a high frequency oscillating means for oscillating a high frequency for heating a heating chamber and food, and a waveguide for supplying a high frequency to the heating chamber. With a tube,
A film that transmits ultraviolet rays so that water vapor in the heating chamber does not escape, a germicidal lamp that irradiates ultraviolet rays into the heating chamber through the film, and a door that is provided in the heating chamber opening and uses glass that does not transmit ultraviolet rays, A door switch that turns on / off the germicidal lamp by opening / closing the door, a door opening / closing determination means that determines whether the door is opened / closed, an on / off means that turns on / off the germicidal lamp, and an on / off means by a signal from the door opening / closing means A control unit is provided, and the door switch and the on / off means are connected in series. Further, in order to achieve the fifth object, the high-frequency heating device of the present invention comprises a heating chamber, a high-frequency oscillating means for oscillating a high frequency for heating food, a waveguide for supplying a high frequency to the heating chamber, and a heating chamber UV transparent film to prevent water vapor from escaping, a sterilizing lamp that irradiates UV into the heating chamber through the film, a door that uses glass that does not transmit UV and is provided in the heating chamber opening, and a sterilizing lamp Further, in order to achieve the sixth object, the high-frequency heating device according to the present invention is provided with a heating chamber, which is provided with an on / off means for turning on / off the light source and a control part including a timer function for temporally controlling the on / off means. And a high-frequency oscillating means for oscillating a high frequency for heating food, a waveguide for supplying the high frequency to the heating chamber, and a first film that transmits ultraviolet rays so as to prevent water vapor in the heating chamber from escaping. A sterilizing lamp that irradiates the heating chamber with ultraviolet rays through the first film, a second film that does not allow water vapor in the heating chamber to escape, and an oven lamp that illuminates the heating chamber through the second film, It is provided at the opening of the heating chamber,
A door using glass that does not transmit ultraviolet rays, a first on / off means for turning on / off a germicidal lamp, a second on / off means for turning on / off an oven lamp, a first on / off means and a second on / off means. It is equipped with a control unit that can individually control, such as thawing, heating, and reheating, depending on the content of cooking.

[0008]

The structure of the high-frequency heating device for achieving the first object of the present invention has a sterilizing lamp for irradiating ultraviolet rays in the heating chamber so that bacteria can be propagated even in cooking such as thawing for a long time. It can be prevented.

Further, the structure of the high-frequency heating apparatus for achieving the second object has a safety means for mechanically turning off the germicidal lamp by the door switch when the door is open, so that the leakage of ultraviolet rays to the outside is prevented. In addition, the structure of the high-frequency heating device for achieving the third object has a safety means for turning off the germicidal lamp under the control of the on / off means when the door is open, so that the leakage of ultraviolet rays to the outside can be prevented. The structure of the high-frequency heating device for achieving the above-mentioned fourth object is a double safety connected in series in which the germicidal lamp is turned off by the control of the mechanical means and the on / off means by the door switch when the door is open. Since there is a means, it is possible to surely prevent the ultraviolet ray from leaking to the outside even if one of the safety means is abnormal. Further, in the configuration of the high-frequency heating device for achieving the fifth object, it is possible to extend the life of the sterilizing lamp because the sterilizing lamp can be controlled to be turned on only for a predetermined time, and the sixth object is also provided. The configuration of the high-frequency heating device for achieving the, the sterilization lamp is turned on according to the cooking contents such as thawing, and it is possible to perform the control to turn on the normal oven lamp during other cooking, thereby extending the life of the sterilization lamp, By properly using the germicidal lamp and the oven lamp, it becomes possible to easily judge from the outside whether the thawing is performed or the reheating is performed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A high frequency heating apparatus according to an embodiment 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.

(Embodiment 1) In FIG. 1, a high frequency oscillated from a magnetron 1 as a high frequency oscillating means is supplied into a heating chamber 4 through a waveguide 2 to heat a food 5. A germicidal lamp 6 is provided outside the heating chamber 4, and a space between the heating chamber 4 and the heating chamber 4 is made of a material that transmits ultraviolet rays, and is separated by a film 7 for preventing water vapor in the heating chamber 4 from escaping. . A door 8 is provided in the heating chamber opening 4a, and the window of the door 8 is made of glass 8a made of a material that does not transmit ultraviolet rays.

In this embodiment, the food 5 can be thawed for a long time.
Further, by irradiating the ultraviolet rays from the germicidal lamp 6 through the film 7, the bacteria can be killed and the growth of the bacteria can be prevented. Further, by using the glass 8a made of a material that does not transmit ultraviolet rays in the window portion of the door 8, it is possible to prevent the ultraviolet rays irradiated into the heating chamber 4 from being adversely affected to the outside.

(Embodiment 2) In FIG. 2, the germicidal lamp 6 is powered on by an AC power source 9 by opening and closing the door 8.
A door switch 10 for turning off is connected.

In this embodiment, when the door 8 shown in FIG. 1 is opened, the door switch 10 mechanically turns off the power, so that the irradiation of the ultraviolet rays from the germicidal lamp 6 is stopped and the door 8 is opened. It is possible to prevent leakage of ultraviolet rays to the outside.

(Embodiment 3) In FIG. 3, the germicidal lamp 6 is connected with an on / off means 12 for turning on / off a power source from an AC power source 9 by a signal from a control section 11. The control unit 11 also determines the control of the on / off unit 12 based on a signal from the door open / close determination unit 13 that determines the open / closed state of the door 8 shown in FIG.

In this embodiment, when the door 8 is opened, the control section 11 controls the on / off means 12 to turn off by a signal from the door opening / closing determining means 13, so that the sterilizing lamp 6 is used.
The irradiation of the ultraviolet rays from the inside is stopped, and the leakage of the ultraviolet rays to the outside when the door 8 is opened can be prevented.

(Embodiment 4) In FIG. 4, a sterilizing lamp 6 is supplied with a power from an AC power source 9, a door switch 10 for turning on and off by opening and closing a door 8 shown in FIG. On / off means 12 for turning on / off is connected in series. Further, the control unit 11 determines the control of the on / off unit 12 based on a signal from the door open / close determination unit 13 that determines the open / closed state of the door 8.

In this embodiment, when the door 8 is opened, the door switch 10 is mechanically turned off, and the control section 11 controls the on / off means 12 to be turned off by a signal from the door opening / closing determining means 13. Therefore, even if there is an abnormality in either the door switch 10 or the on / off means 12, the irradiation of the ultraviolet rays from the germicidal lamp 6 is surely stopped, and the leakage of the ultraviolet rays to the outside when the door 8 is opened can be prevented. .

(Embodiment 5) In FIG. 5, the sterilizing lamp 6 is supplied with power from an AC power source 9 and a control unit 1 including a timer function.
ON / OFF means 15 which is turned on / off by a signal from 4.
Are connected.

In the present embodiment, the control section 14 including the timer function turns on the on / off means 15 only for a predetermined time, so that the sterilizing lamp 6 is turned on for a shorter time and the life of the sterilizing lamp 6 is extended. it can.

(Embodiment 6) In FIG. 6, 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 to heat the food 5. A germicidal lamp 6 is provided outside the heating chamber 4, and a space between the heating chamber 4 and the heating chamber 4 is made of a material that transmits ultraviolet rays, and is separated by a first film 16 that does not allow water vapor in the heating chamber 4 to escape. ing. Further, an oven lamp 17 is provided outside the heating chamber 4, and is separated from the heating chamber 4 by a second film 18 for preventing water vapor in the heating chamber 4 from escaping. A door 8 is provided at the opening of the heating chamber 4, and the door 8
A glass 8a, which is a material that does not transmit ultraviolet rays, is used for the window portion. Further, in FIG. 7, the sterilizing lamp 6 is connected with a first on / off means 20 for turning on / off a power source from the AC power source 9 by a signal from the control section 19, and an oven lamp 17 is powered by the AC power source 9. A second on / off means 21 which is turned on / off by a signal from the control unit 19 is connected. Further, the control unit 19 can individually control the first on / off means 20 and the second on / off means 21 by a cooking menu such as thawing, heating and reheating.

In the present embodiment, the sterilization lamp 6 is turned on only for a certain purpose such as thawing, and the normal oven lamp 15 is turned on during other cooking, thereby reducing the time for which the sterilization lamp 6 is turned on. The life of 6 can be extended. Further, by properly using the sterilization lamp 6 and the oven lamp 17, it is possible to easily judge from the outside whether the cooking is done or not.

[0023]

As is apparent from the above description of the embodiments, according to the high frequency heating apparatus of claim 1 of the present invention, the food to be thawed is irradiated with the ultraviolet rays of the germicidal lamp even when it is thawed for a long time. As a result, bacterial growth can be prevented and hygienic thawing can be performed.

Further, according to the high frequency heating apparatus of the second aspect, the safety can be ensured by preventing the ultraviolet ray from leaking when the door is opened by mechanically turning off the germicidal lamp by the door switch when the door is open.

According to the high frequency heating apparatus of the third aspect, in the door open state, the control unit controls the opening / closing means to be turned off and the germicidal lamp is turned off, thereby ensuring safety so that ultraviolet rays do not leak when the door is opened. Can be secured.

Further, according to the high frequency heating device of the fourth aspect, in the door open state, the sterilization lamp is mechanically turned off by the door switch, and the control unit controls the opening / closing means to turn off the sterilization lamp. By doing so, even if one of the safety measures is abnormal, double safety can be ensured so that ultraviolet rays do not leak when the door is opened.

Further, according to the high frequency heating device of the fifth aspect, the life of the sterilizing lamp can be extended by controlling the lighting of the sterilizing lamp only for a predetermined time so as to reduce the lighting time of the sterilizing lamp. , The maintenance load of the germicidal lamp can be reduced.

Further, according to the high frequency heating device of the sixth aspect, the lighting time of the germicidal lamp is shortened by controlling the lighting of the germicidal lamp only for a certain purpose such as thawing and turning on the oven lamp during other cooking. By doing so, the life of the germicidal lamp can be extended, and the maintenance burden of the germicidal lamp can be reduced. Also, by properly using the germicidal lamp and the oven lamp, the distinction between the thawing and the other cooking can be easily known from the outside.

[Brief description of drawings]

FIG. 1 is a side sectional view of a high frequency heating apparatus according to a first embodiment of the present invention.

FIG. 2 is a block circuit diagram of the high-frequency heating device according to the second embodiment.

FIG. 3 is a block circuit diagram of a high frequency heating apparatus according to the third embodiment.

FIG. 4 is a block circuit diagram of a high frequency heating apparatus according to the fourth embodiment.

FIG. 5 is a block circuit diagram of a high frequency heating apparatus according to the fifth embodiment.

FIG. 6 is a side sectional view of the high-frequency heating device according to the sixth embodiment.

FIG. 7 is a block circuit diagram of the high-frequency heating device according to the sixth embodiment.

FIG. 8 is a side sectional view of a conventional high-frequency heating device.

[Explanation of symbols]

 1 magnetron (high frequency oscillation means) 2 waveguide 4 heating chamber 4a heating chamber opening 5 food 6 germicidal lamp 7 film 8 door 8a glass

Claims (6)

[Claims] 1. A heating chamber, a high-frequency oscillating means for oscillating a high frequency for heating food, a waveguide for supplying a high frequency to the heating chamber, and an ultraviolet ray for transmitting water vapor in the heating chamber. A high-frequency heating device comprising: a film, a sterilizing lamp that irradiates ultraviolet rays into the heating chamber through the film, and a door that is provided at the opening of the heating chamber and uses glass that does not transmit ultraviolet rays. 2. A heating chamber, a high-frequency oscillating means for oscillating a high frequency for heating food, a waveguide for supplying a high frequency to the heating chamber, and an ultraviolet ray for transmitting water vapor in the heating chamber. A film, a germicidal lamp that irradiates ultraviolet rays into the heating chamber through the film, a door that is provided in the heating chamber opening and uses glass that does not transmit ultraviolet rays, and the germicidal lamp is turned on by opening and closing the door.・ High frequency heating device equipped with a door switch that turns off the light. 3. A heating chamber, a high-frequency oscillating means for oscillating a high frequency for heating food, a waveguide for supplying a high frequency to the heating chamber, and an ultraviolet ray for preventing water vapor in the heating chamber from escaping. A film, a germicidal lamp that irradiates ultraviolet light into the heating chamber through the film, a door that is provided in the heating chamber opening and uses glass that does not transmit ultraviolet light, and a door open / close determination that determines whether the door is open or closed. Means and
A high-frequency heating device comprising: an on / off means for turning on / off the sterilization lamp; and a control section for controlling the on / off means by a signal from the door opening / closing determining means. 4. A heating chamber, a high-frequency oscillating means for oscillating a high frequency for heating food, a waveguide for supplying a high frequency to the heating chamber, and an ultraviolet ray for preventing water vapor in the heating chamber from escaping. A film, a germicidal lamp that irradiates ultraviolet rays into the heating chamber through the film, a door that is provided in the heating chamber opening and uses glass that does not transmit ultraviolet rays, and the germicidal lamp is turned on by opening and closing the door. A door switch for turning off the light, a door opening / closing determining means for determining whether the door is open / closed, an on / off means for turning on / off the germicidal lamp, and a control unit for controlling the on / off means by a signal from the door opening / closing determination means. A high-frequency heating device comprising the door switch and the on / off means connected in series. 5. A heating chamber, a high-frequency oscillating means for oscillating a high frequency for heating food, a waveguide for supplying a high frequency to the heating chamber, and an ultraviolet ray for transmitting water vapor in the heating chamber. A film, a sterilizing lamp that irradiates the heating chamber with ultraviolet rays through the film, a door that is provided in the heating chamber opening and uses glass that does not transmit ultraviolet light, and an on / off means that turns on / off the sterilizing lamp. And a control unit including a control unit having a timer function for temporally controlling the on / off means. 6. A heating chamber, a high-frequency oscillating means for oscillating a high frequency for heating food, a waveguide for supplying a high frequency to the heating chamber, and an ultraviolet ray for preventing water vapor in the heating chamber from escaping. Through a first film, a sterilizing lamp that irradiates the heating chamber with ultraviolet rays through the first film, a second film that does not allow water vapor in the heating chamber to escape, and the second film. And an oven lamp that illuminates the heating chamber, and is provided in the heating chamber opening,
A door using glass that does not transmit ultraviolet rays, a first on / off means for turning on / off the germicidal lamp, a second on / off means for turning on / off the oven lamp, the first on / off means and the second Defrost the on-off means of
A high-frequency heating device equipped with a control unit that can be individually controlled according to the cooking contents of heating and reheating.