JPH09112908A - Heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an tasty material to be heated by forming a scorched layer early on the surface of the material to be heated to keep components of taste therein sealed completely concerning a heater for heating the material to be heated such as food. SOLUTION: Air sent into a heating chamber 12 by a fan 17 is heated hot by an electric heater 14 as heating means. An air direction switching gear 20 provided in the heating chamber 12 controls the direction of hot air to blow the hot air to the surface of material 11 to be heated. With such an arrangement, a scorched layer can be formed on the surface of the material 11 to be heated to provide a tasty material to be heated by keeping components of taste therein sealed completely.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a heating device for heating an object to be heated such as food by hot air.

[0002]

2. Description of the Related Art As a conventional heating device of this type, a heating device disclosed in Japanese Patent Laid-Open No. 4-122 is generally used. Less than,
The configuration will be described with reference to FIG. As shown in FIG. 8, a heating chamber 2 for housing the article to be heated 1, a mounting table 3 on which the article to be heated 1 is placed, a high frequency oscillator 4 for radiating a high frequency, and a cooling fan 5 for cooling the high frequency oscillator 4. When,
An opening 6 provided on the upper wall of the heating chamber 2, an air passage 7 for guiding the wind from the cooling fan 5 into the heating chamber 2 through the opening 6,
The electric heater 8 is provided inside the ventilation passage 7 and is provided outside the heating chamber 2, and the reflector 10 is provided above the electric heater 8 and has the ventilation port 9.

In the above structure, the infrared rays generated by the electric heater 8 are radiated into the heating chamber 2 through the opening 6 provided in the upper wall of the heating chamber 2. After cooling the high-frequency oscillator 4, the wind from the cooling fan 5 is guided through the ventilation path 7, enters through the ventilation port 9 of the reflection plate 10, and is heated by the electric heater 8 and the reflection plate 10.
After being heated by the electric heater 8, it becomes hot air and enters the heating chamber 2 through the opening 6. Therefore, the object to be heated 1 is heated by the infrared rays and the hot air emitted from the electric heater during grill cooking.

[0004]

However, in the above-mentioned conventional configuration, the hot air sent to the heating chamber circulates in the heating chamber to raise the ambient temperature of the heating chamber to heat the object to be heated. , Heat could not be efficiently transferred to the object to be heated. In particular, in the case of grill cooking where a charcoal layer is formed on the surface of an object to be heated, such as hamburger steak or steak, it takes time to form the charcoal layer, and the umami inside the object to be heated is lost before the charcoal layer is formed. There was a problem that it was not delicious.

The present invention is intended to solve the above problems, and it is an object of the present invention to efficiently heat an object to be heated to form a brown layer on the surface of the object quickly and to control the formation of the brown layer.

[0006]

The present invention has the following configuration in order to achieve the above object.

That is, a heating chamber for containing an object to be heated,
At least one of a blower that blows air into the heating chamber, a heating unit that mainly heats the air, a wind direction changer that is provided in the heating chamber to change the blowing direction of the air, and a blower, a heating unit, and a wind direction changer. And a control unit for controlling the. With this configuration, the air blown from the blower is heated by the heating means and becomes hot air, which is blown into the heating chamber. The control unit controls the blower to change the amount of air blown. Further, the control unit controls the heating means to change the heating amount of the blown air. Further, the control unit controls the wind direction switching device to switch the wind direction so that hot air is efficiently applied to the object to be heated. Therefore, the brown layer can be quickly formed on the surface of the object to be heated, the umami inside the object to be heated is not lost, and a delicious object to be heated can be provided.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The first means of the present invention is to provide a heating chamber for containing an object to be heated, a blower for blowing air into the heating chamber, a heating means for heating air, and the air provided in the heating chamber. And a control unit for controlling at least one of the blower, the heating means, and the wind direction changer.

The second means is a heating chamber for accommodating an object to be heated, a high frequency oscillator for radiating a high frequency, a waveguide for transmitting the high frequency radiated from the high frequency oscillator, and a second chamber provided in the waveguide. An absorber that generates heat by high frequency, a blower that blows air into the heating chamber through the absorber, a wind direction changer that is provided in the heating chamber to change the blowing direction of the air, a high frequency oscillator, a blower, and a wind direction changer. And a control unit that controls at least one of the above.

The third means is such that the absorber is provided at a position where the high frequency electric field of the waveguide is strong.

The fourth means is a heating chamber for containing the object to be heated, a blower for blowing air into the heating chamber, a heating means for heating the air, and a blowing direction of the air provided in the heating chamber. The configuration includes a wind direction selector, a menu selection unit for selecting a heating menu for the object to be heated, and a control unit for controlling the wind direction selector based on a signal from the menu selection unit.

A fifth means is a heating chamber for housing the object to be heated, a blower for blowing air into the heating chamber, a heating means for heating the air, and a ventilation direction of the air provided in the heating chamber. And a controller for controlling at least one of the blower, the heating means and the wind direction switcher based on a signal from the detection means. .

A sixth means is a heating chamber for accommodating an object to be heated, an opening provided on a wall surface of the heating chamber, a blower for blowing air into the heating chamber through the opening, and the air Heating means for heating, an air direction switching device provided in the opening for changing the air blowing direction of the air, and a control part for movably controlling the air direction switching device so as to close the opening when the air blower and the heating means are not operating. It is composed of.

The present invention has the following effects due to the above configuration. That is, in the first means, the air blown from the blower is heated by the heating means and becomes hot air, which is blown into the heating chamber. The control unit controls the blower to change the amount of air blown. Further, the control unit controls the heating means to change the heating amount of the blown air. Further, the control unit controls the wind direction switching device to switch the wind direction so that hot air is efficiently applied to the object to be heated.

Further, in the second means, the absorber provided in the waveguide absorbs the high frequency radiated from the high frequency oscillator and instantaneously generates heat. The air blown from the blower is heated as it passes through the absorber, becomes hot air, and is blown into the heating chamber. The wind direction selector provided in the heating chamber switches the wind direction so that hot air can efficiently hit the object to be heated. The control unit controls the high frequency oscillator to change the high frequency radiation output. Also, the blower is controlled to change the amount of blown air. Further, it controls the wind direction switching device to switch the blowing direction of the hot air.

In the third means, since the absorber is provided at a position where the high frequency electric field is strong in the waveguide, the high frequency emitted from the high frequency oscillator is efficiently absorbed, so that the heat is generated in a shorter time. You can

Further, by the fourth means, the control section controls the wind direction switching device according to the heating menu selected by the menu selecting means to control the wind direction of the hot air sent into the heating chamber.

Further, in the fifth means, the control section, based on the signal of the detection means for detecting the heating state of the object to be heated,
At least one of the blower, the heating means, and the wind direction switcher is controlled to perform good heating.

In the sixth means, when the blower and the heating means are not operating, the control section movably controls the wind direction selector to close the opening provided in the heating chamber.

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a configuration diagram of a heating apparatus according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of an air flow direction switching device of the heating apparatus, as seen from above a heating chamber. In the figure, 11
Is an object to be heated, 12 is a heating chamber for housing the object to be heated 11, 1
3 is a mounting table on which the object to be heated 11 is mounted, and 14 is a heating chamber 12
An electric heater, which is a heating means for heating an object to be heated, is provided on the outdoor upper part of the heater, 15 is a reflector located above the electric heater 14, and has a ventilation port 16, and 17 is heated by the electric heater 14 which is a heating means. A blower for blowing the air into the heating chamber 12, 18 a ventilation path for guiding the air blown by the blower 17 into the heating chamber 12, 19 an opening provided on the upper wall of the heating chamber 12, 20 a heating chamber 12 And a wind direction selector 21 for changing the wind direction of the hot air sent into the heating chamber 12,
Is a control unit that controls at least one operation of the electric heater 14 that is a heating unit, the blower 17, and the wind direction selector 20, and 22 is a motor that moves the wind direction selector 20.

In the above structure, the object to be heated 11 is placed on the placing table 13 and is housed in the heating chamber 12, and a heating start signal is input from an operating portion (not shown). The control unit 21 receives the heating start signal, operates the electric heater 14, and operates the blower 17. The infrared rays generated by the electric heater 14 are supplied to the heating chamber 12 through an opening 19 provided on the upper wall of the heating chamber 12.
It is irradiated inside. The air blown by the blower 17 flows through the ventilation path 18 and the ventilation port 16 of the reflection plate 15 and flows between the electric heater 14 and the reflection plate 15 which are heating means, and is heated by the electric heater 14 to become hot air. It is guided to the heating chamber 12 through the opening 19.

The controller 21 temporally controls the electric power supplied to the electric heater 14, which is a heating means, to change the heating amount of air, and controls the driving power supply of the blower 17 to change the blowing amount. By doing so, hot air at a desired temperature can be generated.

Further, as shown in FIG. 2, the control unit 21 drives the motor 22 to change the rotation angle of the wind direction selector 20 to control the wind direction of the hot air. By this control, hot air can be blown directly to the article to be heated 11.

By constructing the wind direction selector 20 from a shape memory alloy or a functionally graded material, a simple structure is obtained.
It is also possible to control the wind direction selector.

The air that has heated the object 11 to be heated is discharged to the outside of the heating chamber 12 through a ventilation port (not shown) provided in the heating chamber 12. In addition, this exhausted air ventilation path 1
With the configuration in which the hot air is guided to 8 and is recirculated, it is possible to blow hotter hot air into the heating chamber 12.

Therefore, according to one embodiment of the present invention,
The wind direction switching device 20 provided in the heating chamber 12 is the object to be heated 1
Since the wind direction is switched so that the hot air hits 1 efficiently, it is possible to quickly form a brown layer on the surface of the object to be heated 11. For example, in the case of an object to be heated such as hamburger, the umami inside is not lost and is delicious. An object to be heated can be provided.

(Embodiment 2) FIG. 3 is a block diagram of a heating apparatus according to another embodiment of the present invention, in which a high frequency oscillator is used as the heating means. In the figure, 23 is a high-frequency oscillator that radiates high-frequency waves, 24 is a waveguide that guides the high-frequency waves radiated by the high-frequency oscillator 23 to the heating chamber 12, and 25 is an absorber that absorbs the high-frequency waves and generates heat.

In the above structure, the object to be heated 11 is placed on the placing table 13 and is housed in the heating chamber 12, and a heating start signal is input from an operating portion (not shown). In response to the input heating start signal, the control unit 21 operates the high frequency oscillator 23 and also operates the blower 17. The high frequency emitted from the high frequency oscillator 23 is absorbed by the absorber 25 via the waveguide 24. The absorber 25 absorbs a high frequency and generates heat. The air blown from the blower 17 is heated when passing through the absorber 25, which is a component of the heating means, and becomes hot air, which is sent from the opening 19 into the heating chamber 12. Control unit 2
1 controls the wind direction switching device 20 provided in the heating chamber 12,
Hot air is blown directly onto the object to be heated 11.

The control section 21 can control the operation of the high frequency oscillator 23 or the blower 17 to generate hot air of a desired temperature.

The absorber 2 which is a component of the heating means
The structure 5 has a structure such as a layered structure having a gap or a honeycomb structure, through which air sent by the blower 17 can easily pass.

Therefore, according to another embodiment of the present invention,
The absorber 25 absorbs the high frequency and heats up to high temperature in a short time.
High-temperature hot air is immediately sent to the heating chamber 12 by the blower 17. Further, the wind direction switching device 20 provided in the heating chamber 12
However, since the wind direction is switched so that hot air is efficiently applied to the object to be heated 11, the heating time can be further shortened and a delicious object to be heated can be provided.

(Embodiment 3) FIG. 4 is a schematic view of a waveguide of a high frequency heating apparatus according to another embodiment of the present invention.

In FIG. 4, 23 is a high-frequency oscillator that radiates high-frequency waves, 24 is a waveguide that transmits the high-frequency waves radiated by the high-frequency oscillator 23, and 25 is a high-frequency electric field that is placed inside the waveguide 24 to generate high-frequency electric waves. It is an absorber that absorbs heat efficiently and generates heat.

In the above structure, when the propagation wavelength of the high frequency wave transmitted in the waveguide 24 is λg, λg is expressed by the following equation.

[0035]

(Equation 1)

For example, when the frequency f of the high frequency radiated by the high frequency oscillator 23 is f = 2.45 GHz, the wavelength λ is λ = 122 m.
λg = 188, where λg is the waveguide dimension a in the direction perpendicular to the high frequency transmission direction in the waveguide 24, where a = 80 mm.
mm.

As shown in FIG. 4, the high frequency electric field in the waveguide becomes stronger every λg / 2. Therefore, by placing the absorber 25 at a position where the high frequency electric field is strong, heating of the absorber, which is a component of the heating means, is performed. Since the capacity is maximized, the heat generating capacity is high.

(Embodiment 4) FIG. 5 is a block diagram of a heating apparatus in another embodiment of the present invention. In FIG. 5, the point different from the above-described embodiment is that the menu selection means 26 for selecting the heating menu of the object to be heated 11 is provided.

In the above structure, the object to be heated 11 is placed on the mounting table 13 and stored in the heating chamber 12, and the desired heating menu of the object to be heated 11 is selected from the heating menu group of the menu selection means 26. input. The control unit 21 controls the electric heater 14, the blower 17, or the wind direction changer 20 based on the heating menu selected by the menu selection unit 26. For example, when baking a cake or the like, by controlling the wind direction switching device 20 to the upper wall side of the heating chamber 12 as shown by the solid line in the figure, hot air is dispersed, and when heating a hamburger or the like, By controlling the wind direction selector 20 as indicated by the broken line in the figure, the hot air is concentrated on the object to be heated 11 and heated.

The wind direction changer 20 may be controlled by continuously moving the wind direction changer while the object 11 to be heated is being heated.

Therefore, the wind direction of the hot air can be automatically controlled and heated according to the heating menu.

(Embodiment 5) FIG. 6 is a block diagram of a heating apparatus in another embodiment of the present invention. In the figure, the point different from the above-described embodiment is that the detection means 27 for detecting the heating state of the object to be heated 11 is provided. The control unit 21 controls at least one of the wind direction switching unit 20, the electric heater 14 as a heating unit, and the blower 17 based on a signal from the detection unit 27.

In the above structure, the object to be heated 11 is placed on the mounting table 13 and is housed in the heating chamber 12, and heating of the object to be heated 11 is started. The detection means 27 detects the heating state of the article to be heated 11, and the control section 21 controls at least one of the wind direction switching device 20, the electric heater 14, and the blower 17 based on the detection signal.

When the detecting means 27 uses, for example, a temperature sensor for detecting the temperature of the article to be heated 11, the control section 21 receives a signal from the temperature sensor and the control section 21 causes hot air to flow to a location where the temperature of the article to be heated 11 is low. Wind direction selector 2
Control 0.

Therefore, it is possible to efficiently heat the object to be heated 11 while automatically adjusting the heating power according to the heating state.

The detecting means 27 for detecting the heating state of the object 11 to be heated includes a steam sensor for detecting the steam generated from the object 11 to be heated, and a darkness sensor (for example, a light sensor) for detecting the darkness of the object 11 to be heated. Can be used).

(Sixth Embodiment) FIG. 7 is a block diagram of a high frequency heating apparatus according to another embodiment of the present invention. In the figure, the difference from each of the above-described embodiments is that the control unit 21 controls the wind direction selector 20 to close the opening 19.

In the above structure, the control section 21 controls the operations of the blower 17 and the electric heater 14 which is the heating means. When the operations of the blower and the electric heater are stopped, the controller 21 movably controls the wind direction selector 20 so as to close the opening 19.

Therefore, when the object to be heated is stored in the heating chamber, the opening 19 is closed, and the opening 19 is opened during heating and closed again after heating is completed. With this configuration, smoke or steam generated from the heated object 11 to be heated passes through the opening portion 19 and then the ventilation passage 18 after the heating is completed.
Can be prevented, and the life of the heating means (electrothermal heater 14 and absorber) can be extended.

[0050]

As described above, the heating device of the present invention has the following effects.

(1) By the first means, the wind direction changer blows the hot air toward the surface of the object to be heated, so that the brown layer can be quickly formed on the surface of the object to be heated, and the inside of the object to be heated can be formed. It is possible to provide delicious objects to be heated without missing the umami.

(2) By the second means, the absorber absorbs the high frequency and heats to a high temperature in a short time, and the air from the blower is efficiently heated to be hot-aired. Can be provided.

(3) By the third means, the absorber is provided at a position in the waveguide where the high frequency electric field is strong, so that the heating capacity of the absorber is maximized and the heat generating capacity is high, and the taste is good in a short time. An object to be heated can be provided.

(4) By the fourth means, the control section controls the wind direction changer based on the heating menu selected by the menu selecting means, so that the range of methods for heating the object to be heated can be widened.

(5) By the fifth means, the control unit controls the heating based on the signal of the detection means for detecting the heating state of the object to be heated, so that the heating power is automatically changed according to the heating state of the object to be heated. It can be heated efficiently while adjusting, which improves usability.

(6) By the sixth means, the control unit controls the wind direction switching device to close the opening, so that the smoke or vapor generated from the heated object is heated in the ventilation passage through the opening. It is possible to prevent the heating means from reaching the heating means, and the life of the heating means can be extended.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a heating device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of an air flow direction switching device of the heating device.

FIG. 3 is a configuration diagram of a heating device according to another embodiment of the present invention.

FIG. 4 is a diagram showing the arrangement of heating means of the heating device.

FIG. 5 is a configuration diagram of a heating device according to another embodiment of the present invention.

FIG. 6 is a configuration diagram of a heating device according to another embodiment of the present invention.

FIG. 7 is a configuration diagram of a heating device according to another embodiment of the present invention.

FIG. 8 is a configuration diagram of a conventional heating device.

[Explanation of symbols]

 Reference Signs List 11 heated object 12 heating chamber 14 electric heater (heating means) 17 blower 19 opening 20 wind direction selector 21 controller 23 high frequency oscillator 24 waveguide 25 absorber (heating means) 26 menu selection means 27 detection means

Claims (6)

[Claims] 1. A heating chamber for containing an object to be heated, a blower for blowing air into the heating chamber, a heating means for mainly heating the air, and a ventilation direction of the air provided in the heating chamber. A heating device comprising an airflow direction selector, a control unit that controls at least one of the blower, the heating means, and the airflow direction selector. 2. A heating chamber for accommodating an object to be heated, a high-frequency oscillator for radiating a high frequency, a waveguide for transmitting the high frequency radiated from the high-frequency oscillator, and heat generated by the high frequency provided in the waveguide. An absorber, a blower that blows air into the heating chamber through the absorber, and an air-direction switching device that is provided in the heating chamber to change the blowing direction of the air,
A heating device comprising a control unit that controls at least one of the high-frequency oscillator, the blower, and the wind direction selector. 3. The heating device according to claim 2, wherein the absorber is provided at a position where the high frequency electric field of the waveguide is strong. 4. A heating chamber for containing an object to be heated, a blower for blowing air to the heating chamber, a heating means for mainly heating the air, and a blowing direction of the air provided in the heating chamber. A heating device comprising an airflow direction selector, a menu selection unit for selecting a heating menu for the object to be heated, and a control unit for controlling the airflow direction selector based on a signal from the menu selection unit. 5. A heating chamber for containing an object to be heated, a blower for blowing air to the heating chamber, a heating means for mainly heating the air, and a ventilation direction of the air provided in the heating chamber. An air flow direction switching device, a detection unit for detecting a heating state of the object to be heated, and a control unit for controlling at least one of the blower, the heating unit, and the wind direction switching device based on a signal from the detection unit. Heating device. 6. A heating chamber for housing an object to be heated, an opening provided in a wall surface of the heating chamber, a blower for blowing air into the heating chamber through the opening, and mainly heating the air. Heating means, a wind direction switching device provided in the opening for changing the air blowing direction of the air, and a wind direction switching so that the opening is closed by the wind direction switching device when the blower and the heating means are not operating. A heating device consisting of a control unit for movably controlling the heater.