JP3063643B2 - Heating equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating apparatus for dielectrically heating an object to be heated such as food by electromagnetic waves.

[0002]

2. Description of the Related Art Conventionally, in an induction heating apparatus using electromagnetic waves of this kind, as a means for heating an object to be heated uniformly, the positional relationship between a standing wave in a heating chamber and the object to be heated is constantly changed to make the electric field distribution uniform. A method has been implemented. Basic methods include a turntable method that heats the object while rotating it, a stirrer fan method that disturbs electromagnetic waves by rotating a metal fan installed on the ceiling of the heating chamber, and an antenna that is a radiator of electromagnetic waves. And the like.

FIG. 12 shows a heating apparatus using the most commonly used turntable system (for example, Japanese Patent Laid-Open No. 4-319287).

[0004] In this heating apparatus, an object to be heated 1 is placed on a turntable 3 in a heating chamber 2 and heated. As a heating method, an electromagnetic wave emitted from a magnetron 5 which is an electromagnetic wave radiating means is transmitted through a waveguide 6 and is radiated from two power supply ports 7 into the heating chamber 2 to heat the object 1 to be heated by dielectric heating. I do. 4 is a motor for rotating the turntable 3,
8 is a power supply for driving the magnetron 5, 9 is a power supply,
This is control means for controlling the motor.

[0005] A standing wave is generated in the heating chamber 2 depending on the dimensions of the heating chamber 2 and the position of the power supply port 7.

The heating mechanism of the object to be heated 1 generates heat according to the electric field component of the standing wave and the dielectric loss of the object to be heated 1, and the power P [W / m ³ ] absorbed per unit volume is added. The electric field strength E [V / m], the frequency f [Hz], the relative permittivity εr of the food, and the dielectric loss tangent tan δ (Equation 1)
It is expressed as

(Equation 1) P = 5 / 9εr · tan δ · f · E ² × 10 ^-10 [W /
m ³ ] Since the heating distribution of the object to be heated 1 is substantially determined by the standing wave distribution of the electromagnetic waves, the turntable 3 on which the object to be heated 1 is mounted is rotated by the motor 4 so as to be concentric in order to suppress the unevenness of the heating distribution. Was intended to make the heating distribution uniform.

Another prior art of this type of heating apparatus is disclosed in Japanese Unexamined Patent Publication No. 2-226688 (not shown).
Are shown in In this case, a heat plate on a disk that generates heat by absorbing electromagnetic waves is placed on a turntable. A wire mesh support tube is detachably mounted on the periphery of the turntable, and a wire mesh as an electromagnetic wave dispersion member is stretched at an upper open end of the wire mesh support tube. Further, a stirrer fan is provided at an upper portion of the heating chamber.

With the above structure, a part of the electromagnetic wave passes through the wire mesh and is absorbed by the food from the upper surface, and the rest collides with the wire mesh and is dispersed and absorbed by the heat plate to generate heat. As described above, in addition to the combined use of the turntable and the stirrer fan, an electromagnetic wave dispersing member made of a wire mesh is provided between the electromagnetic wave radiating portion and the food placed on the heat plate to perform uniform heating.

[0010]

However, the conventional heating apparatus requires a rotating mechanism using a motor, such as a turntable, a stirrer fan, and a rotating antenna.
The structure is complicated, and there is a limit to miniaturization.
In the turntable method shown in FIG. 12, if the turntable 3 is provided in the heating chamber 2, a dead space in which the object to be heated 1 cannot be placed is generated (a part where the turntable is removed). There is a problem that when the object to be heated 1 such as a glass is put in, the stop position of the turntable at the end of heating does not stop at a place where the handle of the glass can be easily taken out.

When the turntable 3 is used, a uniform heating distribution on the concentric circle of the object to be heated 1 can be achieved.
The heating unevenness in the radial direction viewed from the center of rotation is not improved, but if the turntable 3 is not provided,
Further, there is a problem that uneven heating occurs.

Further, even when a plurality of power supply ports 7 are provided,
However, simply opening the power supply port 11 at the same time causes a certain electric field to be generated, and it is difficult to make the heating distribution of the article 1 to be heated uniform. As a result, in the microwave oven shown in FIG. 12, a satisfactory finished state cannot be obtained unless an appropriate power supply port 7 is switched for each object 1 to be heated.

The device disclosed in Japanese Patent Application Laid-Open No. 226688/1990 includes a turntable and a stirrer fan, a wire mesh for dispersing electromagnetic waves, and a heat plate for absorbing electromagnetic waves and generating heat. In addition, miniaturization becomes difficult. Furthermore, at the time of use, it is necessary to attach and detach the wire mesh each time food is taken in and out of the heating chamber, which makes the operation extremely troublesome.

[0014]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a heating chamber for taking in and out an object to be heated, electromagnetic wave radiating means for radiating electromagnetic waves, and electromagnetic wave radiating from the electromagnetic wave radiating means. A power supply port for guiding into the heating chamber through a corrugated tube, and a conductor mounting member on which an object to be heated is mounted and a plurality of substantially rectangular openings are formed, wherein the power supply port is a conductor mounting member. And the dimension of at least one side of the substantially rectangular opening of the conductor mounting member is set to １ ／ of the wavelength of the electromagnetic wave to be used.

According to the above invention, a strong electric field of electromagnetic waves is generated in the plurality of openings formed in the conductor mounting member to generate a heating distribution band, so that the object to be heated mounted on the conductor mounting member can be efficiently used. Good uniform heating is possible.

Further, there is no need to use a rotating mechanism such as a turntable, so that the configuration is extremely simple and the size can be reduced.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a heating chamber for taking in and out an object to be heated, electromagnetic wave radiating means for radiating electromagnetic waves, and guiding electromagnetic waves radiated from the electromagnetic wave radiating means into the heating chamber via a waveguide. A power supply port, having a conductor placement member on which the object to be heated is placed and a plurality of substantially square openings are formed,
The power supply port is positioned below the conductor mounting member, and the dimension of at least one side of the substantially rectangular opening of the conductor mounting member is set to １ ／ of the wavelength of the electromagnetic wave to be used.

The electromagnetic wave radiated to the conductor mounting member having an opening having a size of 1/5 of the wavelength of the electromagnetic wave generates the strongest electric field in each opening, and is heated by the heating distribution generated there. The object can be strongly and uniformly heated from below.

Further, the power supply apparatus has a plurality of power supply ports inclined with respect to the conductor mounting member. By dispersing the electromagnetic waves throughout the conductor mounting member, local uneven heating of the object to be heated can be eliminated.

Further, the dimension of the other side of the opening is set to 波長 of the wavelength of the electromagnetic wave used.

The size of one side of the plurality of substantially rectangular openings formed in the conductor mounting member is set to 1/5 of the wavelength of the electromagnetic wave to be used, and the size of the other side of the opening is set to 1 of the wavelength of the electromagnetic wave. By setting to / 2, it is possible to disperse the standing wave of the electromagnetic wave that has entered the heating chamber, and it is possible to heat the object to be heated more uniformly.

Further, a part of the plurality of openings formed in the conductor mounting member has an opening having a size for suppressing transmission of electromagnetic waves.

[0023] For example, the opening of the conductor mounting member portion near the electromagnetic wave feeding port is sized to suppress the transmission of the electromagnetic wave, thereby preventing the object to be heated from being partially and strongly heated. Heating can be performed more uniformly.

Further, the conductor mounting member is subjected to an electrical insulation treatment. For example, frozen food gratin contains an object to be heated in an aluminum tray, and does not cause a spark between the aluminum tray and the conductor mounting member even when heated by electromagnetic waves.

Further, a heater heating means for heating an object to be heated on the conductor mounting member with a heater is provided.

After the object to be heated is uniformly heated by the electromagnetic wave, the surface of the object can be scorched by the heater. Furthermore, after the object to be heated is thawed by heating with electromagnetic waves, a configuration in which a heater is used to add browning is possible, and speed cooking can be performed.

An inverter power supply for controlling the power of the electromagnetic wave radiating means, an input means for setting the type of the object to be heated, the power and time of the electromagnetic wave radiating means, and an inverter power supply and an electromagnetic wave radiating means depending on the setting of the input means. Or a control means for controlling heating by combining heater heating means.

Then, the power of the high-frequency radiating means is reduced by an inverter power supply within a rating of 100 volts and 15 amps for home use, and combined heating with a heater heating means so as not to shut off a home breaker to provide frozen food. Can be cooked quickly.

Further, detecting means for detecting a physical quantity (weight, shape, temperature, dielectric constant) of the object to be heated or a state (ambient temperature, humidity, electric field, etc.) of the heating chamber and a change thereof are provided. Heating control is performed by combining an inverter power supply, electromagnetic wave radiating means, or heater heating means in accordance with the signal output of the means.

Based on the signals from the detecting means, the control means can automatically control the heating of the object to be heated to obtain an optimum finish.

[0031]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a front view of a main body configuration diagram of a heating apparatus according to Embodiment 1 of the present invention.

FIG. 2 is a top view of a conductor mounting member of the heating device, and FIG. 3 is a side sectional view of the conductor mounting member.

In the drawing, reference numeral 1 denotes an object to be heated, 2 denotes a heating chamber,
Reference numeral 5 denotes a magnetron as an electromagnetic wave radiating means, 8 denotes a power supply for supplying power to the magnetron 5, and 9 denotes a control means for controlling the power supply to control the oscillation of the magnetron 5. 10
Is a waveguide for guiding an electromagnetic wave from the magnetron 5 which is an electromagnetic wave radiating means to a plurality of feed ports 11, and 12 is a conductor mounting member on which the object to be heated 1 is mounted and in which a substantially square opening 12a is formed. It is.

In the above configuration, the conductor mounting member 1
Numeral 2 is made of an electric conductor, and the dimension of one side of the plurality of substantially square openings 12a is set to 1/5 of the wavelength of the electromagnetic wave to be used. The conductor placement member 12 is formed by cutting an opening 12a in a metal plate or by using a metal rod or a wire net, on which the object 1 to be heated such as food is placed. Further, a plurality of diamond-shaped power supply ports 11 are positioned below the conductor mounting member 12. By forming the plurality of power supply ports 11 in a rhombic shape, electromagnetic waves can be more uniformly radiated from the power supply ports 11 to the entire conductor mounting member 12.

Next, the operation and action will be described. In FIG. 1, the electromagnetic wave oscillated from the magnetron 5 propagates through the waveguide 10 and is radiated from the plurality of rhombus-shaped power supply ports 11. Is heated.

At this time, the size of one side of the plurality of openings 12a formed in the conductor mounting member 12 is set to 1/5 of the wavelength of the electromagnetic wave to be used. When the distance is set to 23 to 25 mm, a strong electric field is generated at each opening 12a of the conductor mounting member 12, as shown in FIG. 3, and a heating distribution is obtained here (shaded area in FIG. 3). Since the electromagnetic wave propagates between the openings 12a of the conductor mounting members 12 provided inside the heating chamber 2, the heating mode is close to surface wave heating, and the electromagnetic wave traveling in the height direction of the heating chamber is It becomes a cutoff region in a certain frequency region, is completely reflected at the boundary surface of the conductor mounting member 12, and eventually propagates only in a direction parallel to the conductor mounting member 12. At this time, the propagation of the electromagnetic wave in the height direction of the conductor mounting member 12 decreases exponentially.

As described above, the object 1 to be heated placed on the conductor placement member 12 is uniformly heated by the generation of a strong electric field portion at each opening 12a.

Therefore, uneven heating of the object to be heated 1 can be suppressed. With this heating method, raw products can be uniformly thawed without using a turntable.

Further, there is no need to use a rotating mechanism such as a turntable, so that the configuration is extremely simple and the size can be reduced.

(Embodiment 2) FIG. 4 is a block diagram of a main body according to Embodiment 2 of the present invention.

The difference from the first embodiment is that a plurality of power supply ports 11 are provided to be inclined with respect to the conductor mounting member 12. In FIG. 4, reference numeral 13 denotes a door for taking in and out the object 1 to be heated. The power supply 8 and the control means 9 are not shown, but those having the same reference numerals as those in the first embodiment have the same structure.
Description is omitted.

Next, the operation and function will be described. By providing a plurality of power supply ports 11 at an angle to the conductor mounting member 12, the electromagnetic wave is uniformly radiated to the entire conductor mounting member 12 and the conductor mounting member 12 is provided. Heated object 1 mounted on mounting member 12
Can be more uniformly heated. For example, the present invention is particularly effective for a liquid to-be-heated object 1 such as milk. When the lower portion is heated, a vertical convection is generated, and an upper and lower temperature unevenness can be eliminated.

(Embodiment 3) FIGS. 5 and 6 are top plan views of a conductor mounting member 12 according to Embodiment 3 of the present invention.

In the figure, the conductor mounting member 12 has a substantially square opening 12b having a size of about ５ wavelength of a frequency using one side and a size of 波長 wavelength on the other side. is there. For example, at a frequency of 2.45 GHz, if the opening 12b having one side of 23 to 25 mm and the other side of 60 mm is formed as the conductor mounting member 12, a strong electric field is generated in each opening 12b, and heating is performed here. The distribution was obtained. Therefore, uneven heating of the object to be heated 1 can be further suppressed.

According to this heating method, heating can be performed uniformly without depending on how to place the article 1 to be heated without using a turntable.

FIG. 5 shows the conductor mounting member 12.
A plurality of openings 12b are arranged in parallel, and the one shown in FIG. 6 has a plurality of openings 12b arranged in a zigzag pattern.
Both have the above-mentioned effects.

(Embodiment 4) FIG. 7 is a top view of a conductor mounting member 12 according to Embodiment 4 of the present invention.

In FIG. 7, an opening 12c having a size to suppress transmission of electromagnetic waves used for the conductor mounting member 12 in a portion close to the plurality of feed ports 11 for radiating electromagnetic waves is provided.

For example, at a frequency of 2.45 GHz, if one side of the opening 12c is about 10 mm, the electromagnetic wave from this portion becomes difficult to transmit, and the object 1 to be heated near the power supply port 11 is heated by the radiation of the electromagnetic wave. Overheating can be prevented.

(Embodiment 5) FIG. 8 is a top view of a conductor mounting member 12 according to Embodiment 5 of the present invention.

In FIG. 8, the surface of the conductor mounting member 12 is subjected to an electrical insulation treatment 14 so that electromagnetic waves radiated into the heating chamber 2 do not spark. Electrical insulation 14
The heat-resistant enamel, heat-resistant coating, etc. are applied. For example, in the case of frozen food gratin or the like, the object to be heated 1 is contained in an aluminum tray, and sparks do not occur between the aluminum tray and the conductor placing member 12 even when heated by electromagnetic waves.
Therefore, the object to be heated 1 can be easily thawed by heating with electromagnetic waves.

(Embodiment 6) FIG. 9 is a block diagram of a main body according to Embodiment 6 of the present invention.

The difference from the first embodiment is that the heater heating means 15a, 15
5b is provided. In the figure, components having the same reference numerals as those in the first embodiment have the same structure, and the description will be omitted.

Next, the operation and function will be described. When the heater heating means 15a and 15b are provided, for example, the object 1 having a relatively large thickness, such as baking of a frozen toast or a roll pan, can be used as the object to be heated. First, 500 for several tens of seconds
Thawing or raising the center temperature with electric power equivalent to W and then switching to the heater heating means 15a and 15b and scorching the surface quickly return to a freshly baked state quickly.

Table 1 shows comparison data between the conventional oven toaster having only heater heating means 15a and 15b, a microwave oven with a heater in which a heater is added to a turntable type microwave oven, and the present invention.

[0057]

[Table 1]

As can be seen from Table 1, when the frozen toast is thawed only with the heater heating means 15a and 15b, if the frozen toast is heated with the maximum power suddenly, the surface is scorched first and the center temperature becomes low. In order to prevent this, it is common to employ a control method in which the heater heating means 15a and 15b are turned on and off to increase the central temperature by heating by heat conduction from the surface to defrost and finally heat with the maximum power. In addition to that, drying is advanced by that much and freshly baked cannot be realized. Also, in the heating of the roll roll having a large thickness, the heating by the heat conduction from the surface causes the heater heating means 1 to be heated.
It takes time because of the on / off control performed by 5a and 15b.

Further, even in the case of a turntable method in a microwave oven with heater heating means, the heating distribution to the frozen toast and the roll pan differs due to the rotation, and the amount of heat rays irradiated from the heater heating means changes. It takes more time to heat.

Further, since no special rotating means (conventional turntable of a microwave oven) is required, the object to be heated 1 can be taken out in the inserted state, so that the usability can be greatly improved.

(Embodiment 7) FIG. 10 is a block diagram of a main body according to Embodiment 7 of the present invention.

The difference from the sixth embodiment is that the power supply 8 is an inverter power supply 16 and input means 17 is provided. The components having the same reference numerals as those of the first and sixth embodiments have the same structure, and the description will be omitted.

Next, the operation and operation will be described. The input means 17 sets the type of the object 1 to be heated (for example, selection of a drink or general warming), setting of the power of the magnetron 5, and setting of the heating time. When the set value is input to the control means 9, the control means 9 controls the power of the inverter power supply 16 and controls the magnetron 5 according to the type of the corresponding object 1 to be heated.

When the inverter power supply 16 is provided to heat the frozen food as the article to be heated 1 within the rated voltage of 100 volts and 15 amps for home use, the magnetron 5 is thawed at a low power of 200 W while the heater is defrosted. By the combined simultaneous heating in which the heating means 15a is simultaneously energized, the frozen food can be quickly cooked on the conductor placing member 12 without causing uneven heating without interrupting the home breaker.

(Eighth Embodiment) FIG. 11 is a block diagram of a main body according to an eighth embodiment of the present invention.

The difference from the seventh embodiment is that a detecting means 18 for detecting the physical quantity of the object to be heated 1 or the state in the heating chamber 2 is provided.
To 22 are provided. Reference numeral 18 denotes a humidity sensor for detecting vapor generated from the object 1 to be heated, 19 an ambient temperature sensor for detecting the ambient temperature in the heating chamber 2, and 20 a weight of the object 1 to be heated on the conductor mounting member 12. Weight sensor,
21 is a shape recognition sensor for recognizing the shape of the object 1 to be heated, 2
Reference numeral 2 denotes an electromagnetic wave sensor that measures the dielectric constant of the object 1 to be heated. The humidity sensor 18 employs a method in which steam molecules act on a ceramic resistor to detect humidity by a change in resistance, a sensor in which two temperature sensors are combined to form a bridge circuit, or the like. When detecting the point where the amount of steam reaches the maximum near the boiling point, the control means 9 stops the energization of the inverter power supply 16 and automatically ends the heating. The atmosphere temperature sensor 19 is a thermistor, and the control means 9 detects the atmosphere temperature in the heating chamber 2 and controls the heater heating means 15a and 15b to automatically perform the optimum browning of the article 1 to be heated. The weight sensor 20 detects the weight of the object 1 to be heated placed on the conductor mounting member 12 by resistance strain or the like. The control means 9 controls the power of the inverter power supply 16 according to the weight of the object 1 to be heated. Adjust and heat for optimal heating time. The shape recognition sensor 21 is made of a semiconductor and uses light reflection. A light-emitting element and a light-receiving element are arranged in the height direction of the heating chamber 2, and the control means 9 recognizes the size of the object 1 to be heated based on the amount of reflected light, and controls the power of the inverter power supply 16 according to the size. Adjust and heat for optimal heating time. The electromagnetic wave sensor 22 indirectly estimates the initial temperature and the weight of the object 1 to be heated, and uses a detection diode as a semiconductor. Although not shown in FIG. 11, a weak electromagnetic wave in the heating chamber 2 is detected by a detection diode via an antenna,
The initial temperature and weight of the object to be heated 1 are estimated.

This is because the relation between the frequency band of a certain electromagnetic wave of the object 1 to be heated, the dielectric constant, and the dielectric loss changes depending on the temperature. For example, in the case of 0 degree ice and 0 degree water, the degree of absorption of electromagnetic waves changes significantly, and the product of the dielectric constant and the dielectric loss differs by as much as 80 times, so that the weak electromagnetic waves detected by the electromagnetic wave sensor 22 are relatively weak. The amount of electromagnetic waves varies greatly. Using this property, the control means 9 detects the thawing of the object 1 to be heated, adjusts the power of the inverter power supply 16 accordingly, and heats the thawing for an optimal heating time.

As for the type of the object to be heated 1, the control means 9 selects the sensors 18 to 22 by appropriately combining the sensors and automatically heats the frozen food. is there. Further, since the object to be heated 1 is fixed on the conductor mounting member 12, the sensors 18 to 22
Needless to say, stable detection can be performed without any element that causes disturbance in sensing (for example, fluctuation of a sensor signal due to a turntable as in the related art).

[0069]

As described above, according to the present invention, the heating chamber for taking in and out the object to be heated, the electromagnetic wave radiating means for radiating the electromagnetic wave, and the electromagnetic wave radiated from the electromagnetic wave radiating means are transmitted through the waveguide. A power supply port that guides into the heating chamber; and a conductor mounting member on which an object to be heated is mounted and a plurality of substantially rectangular openings are formed, and the power supply port is positioned below the conductor mounting member. And at least one of the wavelengths of the electromagnetic wave using at least one side of the substantially rectangular opening of the conductor mounting member.
The electromagnetic wave radiated to the conductor mounting member having an opening having a dimension of 1/5 of the wavelength of the electromagnetic wave generates the strongest electric field in each opening, and is covered by the heating distribution generated there. The heated object can be strongly and uniformly heated from below.

Further, uniform heating can be performed without providing a uniform means such as a turntable, so that the area of the heating chamber can be effectively utilized. In addition, since no special rotating means is required, an object to be heated is placed. Since it can be taken out as it is, the usability is greatly improved.

Further, by providing a plurality of power supply ports inclined with respect to the conductor mounting member, electromagnetic waves can be dispersed throughout the conductor mounting member, and local uneven heating of the object to be heated can be eliminated. .

Further, the dimension of one side of the plurality of substantially rectangular openings formed in the conductor mounting member is set to １ ／ of the wavelength of the electromagnetic wave to be used, and the dimension of the other side of the opening is set to 1/5 of the wavelength of the electromagnetic wave. By setting to / 2, it is possible to disperse the standing wave of the electromagnetic wave that has entered the heating chamber, and it is possible to heat the object to be heated more uniformly.

In addition, by providing an opening having a size to suppress transmission of electromagnetic waves in a part of the plurality of openings formed in the conductor mounting member, for example, a portion of the conductor mounting member close to the electromagnetic wave feeding port can be formed. The opening suppresses the transmission of the electromagnetic wave, prevents the object to be heated from being partially heated strongly, and heats the whole more uniformly.

Further, the conductor mounting member is subjected to an electrical insulation treatment. For example, frozen food gratin or the like contains an object to be heated in an aluminum tray. Spark does not occur between the mounting member.

Further, a heater heating means for heating the object to be heated on the conductor mounting member by a heater is provided. After the object to be heated is uniformly heated by the electromagnetic wave, the surface of the object is scorched by the heater. be able to. Furthermore, after the object to be heated is thawed by heating with electromagnetic waves, a configuration in which a heater is used to add browning is possible, and speed cooking can be performed.

Also, an inverter power supply for controlling the power of the electromagnetic wave radiating means, an input means for setting the type of the object to be heated, the power and time of the electromagnetic wave radiating means, and an inverter power supply and an electromagnetic wave radiating means depending on the setting of the input means. Or by having a control means for controlling the heating by combining the heater heating means, the power of the high-frequency radiating means is reduced by the inverter power supply within a rated voltage of 100 volts and 15 amps for home use, and Frozen foods can also be cooked quickly by combined heating to such an extent that a household breaker does not shut off in combination.

Further, the physical quantities (weight, shape,
Temperature, dielectric constant) or the state inside the heating chamber (ambient temperature,
(Humidity, electric field, etc.) and its change are provided, and the control means controls the heating by combining an inverter power supply, an electromagnetic wave radiating means, or a heater heating means according to the signal output of the detecting means. On the basis of the signals from these detecting means, the control means can automatically control the heating of the object to be heated to obtain an optimum finish.

In addition, since the object to be heated is fixed on the conductor mounting member, there is no element that causes a disturbance in sensing by the detecting means (for example, fluctuation of a sensor signal due to a turntable as in the conventional case) and is stable. Can be detected, and the reliability of the finish of cooking is improved.

[Brief description of the drawings]

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

FIG. 2 is a top configuration diagram of a conductor mounting member of the heating device according to the first embodiment of the present invention.

FIG. 3 is a side view of the conductor mounting member of the heating device according to the first embodiment of the present invention.

FIG. 4 is a configuration diagram of a main body of a heating device according to a second embodiment of the present invention.

FIG. 5 is a top configuration diagram of a conductor mounting member of a heating device according to a third embodiment of the present invention.

FIG. 6 is a top configuration diagram of a conductor mounting member of the heating device according to the third embodiment of the present invention.

FIG. 7 is a top view of a conductor placement member of a heating device according to a fourth embodiment of the present invention.

FIG. 8 is a top configuration diagram of a conductor mounting member of a heating device according to a fifth embodiment of the present invention.

FIG. 9 is a configuration diagram of a main body of a heating device according to a sixth embodiment of the present invention.

FIG. 10 is a configuration diagram of a main body of a heating device according to a seventh embodiment of the present invention.

FIG. 11 is a configuration diagram of a main body of a heating device according to an eighth embodiment of the present invention.

FIG. 12 is a diagram showing a main body configuration of a conventional heating device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heated object 2 Heating chamber 5 Magnetron (electromagnetic wave radiation means) 9 Control means 10 Waveguide 11 Power supply port 12 Conductor mounting member 12a-12c Opening 14 Electrical insulation processing 15a, 15b Heater heating means 16 Inverter power supply 17 Input means 18-22 detecting means

────────────────────────────────────────────────── ─── Continued from the front page (72) Inventor Mayumi Nakano 1006 Kazuma, Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (56) References JP-A-61-7591 (JP, A) 7595 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) H05B 6/74 F24C 7/02 511

Claims (8)

(57) [Claims] A heating chamber for taking in and out an object to be heated; electromagnetic wave radiating means for radiating electromagnetic waves; a power supply port for guiding electromagnetic waves radiated from the electromagnetic wave radiating means into the heating chamber via a waveguide; A conductor placement member on which a heating object is placed and on which a plurality of substantially rectangular openings are formed, wherein the power supply port is located below the conductor placement member, and A heating device in which at least one side of the opening of the shape has a size of 1/5 of the wavelength of the electromagnetic wave. 2. The heating apparatus according to claim 1, further comprising a plurality of power supply ports inclined with respect to the conductor mounting member. 3. The heating device according to claim 1, wherein the dimension of the other side of the opening is set to 波長 of the wavelength of the electromagnetic wave used. 4. The heating device according to claim 1, wherein a portion of the conductor mounting member has an opening having a size to suppress transmission of electromagnetic waves. 5. The heating device according to claim 1, wherein the conductor mounting member is subjected to an electrical insulation treatment. 6. The heating apparatus according to claim 1, further comprising a heater heating means for heating an object to be heated mounted on the conductor mounting member. 7. An inverter power supply for controlling the power of the electromagnetic wave radiating means, an input means for setting the type of object to be heated, the power and time of the electromagnetic wave radiating means, and an inverter power supply and an electromagnetic wave The heating device according to any one of claims 1 to 6, further comprising a control unit that controls heating by combining a radiation unit or a heater heating unit. 8. A detecting means for detecting a physical quantity (weight, shape, temperature, dielectric constant) of an object to be heated, or a state (atmospheric temperature, humidity, electric field, etc.) of the heating chamber and a change thereof, The heating device according to any one of claims 1 to 7, wherein a heating control is performed by combining an inverter power supply, an electromagnetic wave emission unit, or a heater heating unit in accordance with a signal output of the detection unit.