JPH094849A - Heating and cooking device - Google Patents

Abstract

PURPOSE: To use steam in an optimum condition in accordance with a kind of food or the like to provide heating and cooking which are excellent in healthy property and finishing performance. CONSTITUTION: A heating and cooking device comprises an oven 13 for storing a substance being heated, induction heating means 16 for heating food, steam generating means 10 for generating steam, chamber heating means 12 for raising temperature in the oven, control means 14 for controlling the induction heating means 16, steam generating means 10 and the chamber heating means 12 to adjust a state in the oven, and thus heats the substance being heated, in the oven by the use of induction heating and steam in a heating atmosphere.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking apparatus such as a microwave oven for cooking an object to be heated such as food.

[0002]

2. Description of the Related Art Conventionally, heating cooking devices such as microwave ovens have
For example, the configuration shown in FIG. 11 has been put into practical use.

FIG. 10 is a sectional view showing the structure of a microwave oven. In the figure, in an oven 2 mounted inside a housing 1, food 4 is placed on a turntable 3 which is a food placing portion when performing dielectric heating. Reference numeral 5 denotes a motor for driving the turntable. Further, a magnetron 6 which is a radio wave heating means for heating radio waves by a high frequency radio wave of 2450 MHz is provided, and radio waves are supplied to the oven 2 via a waveguide to heat the food 4 by radio waves.
The magnetron 6 is oscillated by being supplied with high-voltage power by the drive unit 7, and generates the above-mentioned high frequency radio wave. Reference numeral 8 is a water tank for steam generation, and 9 is a sheathed heater filled in a metal pipe via an insulator.

[0004] Such a conventional microwave oven heats and cooks food by heating the inside of the food by dielectric heating of high-frequency radio waves, so that reheating (reheating) and thawing of the food are very easy and quick. It was a convenient cooking device with the feature that it could be done efficiently.

[0005]

On the other hand, dietary habits in recent years have changed greatly in response to changes in social situations.
In particular, advances in the manufacturing, preservation, and distribution techniques of frozen foods and refrigerated foods have greatly advanced the distribution and spread of cooked foods or equivalent foods. Therefore, the eating habits in recent years have been changed to simple and rational ones centered on cooked foods, and demands for cooking appliances have also changed to those centered on reheating cooking.

[0006] Under such circumstances, the conventional heating cooking device cannot perform sufficient reheating cooking due to its heating mechanism. That is, cooked foods are a wide variety such as oily foods such as fried, fried or tempura, vegetable foods such as raw vegetables and boiled vegetables, and boiled and steamed foods,
It is difficult to extract enough deliciousness of food ingredients and to perform healthy cooking while maintaining nutrients only by simple electric wave heating, and a cooking apparatus capable of reheating suitable for various conditions of food ingredients has been required. In addition, frozen foods of various shapes and those obtained by mixing a plurality of materials are increasing, so that when thawing with a microwave oven, there is a strong tendency that uneven heating due to a difference in radio wave absorption characteristics tends to occur. There has been a demand for a cooking apparatus having improved thawing performance.

[0007]

The present invention has the following arrangement to solve the above-mentioned problems. That is, an oven for containing the object to be heated, a dielectric heating means for heating the food,
A steam generating means for generating steam, an inside heating means for raising the temperature in the oven, and a control section for controlling the dielectric heating means, the steam generating means, and the inside heating means to adjust the state inside the oven. The object to be heated in the oven is heated by dielectric heating and steam in a heating atmosphere.

Further, the vapor generating means is provided with an evaporation chamber, a heat-generating part made of a magnetic material or a metal material arranged in the evaporation chamber, an induction heating means for inductively heating the heat-generating part, and water is supplied to the evaporation chamber. It is composed of water supply means.

The vapor generating means includes an evaporation chamber having a rectangular cross section, a heating section made of a magnetic material or a metal material having a rectangular cross section disposed in the evaporation chamber, an induction heating coil including an induction heating coil and an inverter circuit. And means for supplying water to the evaporation chamber.

Further, the magnetic material or the metal material is made of a foam metal body to deepen the depth of the induction magnetic field and enhance the heat generation effect by the magnetic field.

The magnetic material or the metal body is composed of at least one or more rectangular cylindrical bodies. Further, the magnetic material or metal material is made of Ni, Ni-Cr alloy, stainless alloy, or other water-resistant foam metal body.

The vapor generating means is composed of an evaporation chamber composed of a heating element made of a magnetic material or a metal material, an induction heating means for induction heating the evaporation chamber, and a water supply means for supplying water to the evaporation chamber. are doing.

The inside heating means for raising the temperature in the oven is a heating chamber, a heating portion made of a magnetic material or a metal material disposed in the heating chamber, an induction heating means including an induction heating coil and an inverter circuit. It consists of and.

Further, the heating means for raising the temperature in the oven includes a heating chamber mounted on at least one wall of the oven, a heating portion made of a magnetic material or a metal material disposed in the heating chamber, and an induction member. It is composed of a heating coil and an induction heating means composed of an inverter circuit.

The inside heating means for raising the temperature inside the oven comprises a heating element mounted on at least one wall of the oven, and a blower for carrying and circulating heat generated by the heating element to the oven.

A state detecting means for detecting the amount and temperature of steam in the oven humidified and heated by the dielectric heating means, the steam generating means, and the inside heating means is provided, and the amount of steam corresponding to the kind and amount of the object to be heated is adjusted. The temperature control unit for controlling the temperature is provided in the control unit, and heating is performed with one or more vapor amount and temperature according to the object to be heated.

[0017]

With the above construction, the heating and cooking apparatus of the present invention has the following functions. That is, an oven for containing an object to be heated, a dielectric heating means for heating food, a steam generating means for generating steam, an inside heating means for increasing the temperature in the oven, the dielectric heating means, a steam generating means, And a control unit for controlling the state of the oven by controlling the heating means in the oven, by heating the object to be heated in the oven by the dielectric heating and steam in the heating atmosphere, the inside of the oven An object to be heated such as food can be heated in a steam atmosphere at an arbitrary temperature. Therefore, steam heating at a low temperature of about 60 to 70 ° C. according to the type and amount of the object to be heated,
Steam heating at about 100 ° C., dry steam heating at about 150 to 200 ° C., or combination heating thereof can be performed. And since it is heat transfer by steam, it can be heated at a higher heat transfer than normal air heat transfer, so high-speed heating is possible, and dry heating by dry steam or steam heating by wet steam or those It is possible to freely perform combined heating of, and perform uniform and optimal speed heating according to the type and amount of food.

Further, the vapor generating means, an evaporation chamber, a heat generating part made of a magnetic material or a metal material arranged in the evaporation chamber, an induction heating means for inductively heating the heat generating part, and water are supplied to the evaporation chamber. By configuring with the water supply means, the water sent from the water supply means is directly vaporized by contact with the heating element that generates heat by the action of the induced current induced by the magnetic field generated by the alternating current sent from the induction heating means. It Then, the vapor is generated and stopped by this vaporization instantaneously.

Further, the vapor generating means includes an evaporation chamber having a rectangular cross section, a heating section made of a magnetic material or a metal material having a rectangular cross section arranged in the evaporation chamber, and an induction heating unit including an induction heating coil and an inverter circuit. When the alternating current is supplied from the inverter circuit to the induction heating coil by configuring the means and the water supply means for supplying water to the evaporation chamber, the alternating magnetic field lines generated by the induction heating coil have a rectangular cross-section magnetic material or It penetrates through the heat generating portion made of a metal material. The heat generating portion generates heat by the induced current induced by the alternating magnetic force lines. At the same time, the water in the evaporation chamber is also heated and vaporized. An alternating magnetic field line penetrates the heat generating portion having a rectangular cross section in the front circumference with substantially the same strength, and all the water in the evaporation chamber is in contact with the heat generating portion, so that efficient steam generation is achieved.

Further, since the magnetic material or the metal material is made of a foam metal body, the alternating magnetic field lines generated by the alternating current sent to the induction heating coil are not concentrated on the surface of the heat generating portion, but are separated from the coil. Reach up to the direction.
This deepens the reaching depth of the induction magnetic field and enhances the heat generation effect of the magnetic field.

Further, the magnetic material or the metal body is composed of at least one rectangular tubular body, so that the alternating magnetic force lines generated by the alternating current sent to the induction heating coil penetrate the heating portion of the rectangular tubular body. Then, an induced current is induced in the rectangular cylindrical body. The induced current becomes a closed-loop current along the surface of the cylinder and heats the rectangular cylinder.

Further, the magnetic material or metal material is Ni, Ni-
By using a water-resistant foam metal body such as a Cr alloy, a stainless alloy, etc., the efficiency of induction current generation by the alternating magnetic field lines generated by the alternating current sent to the induction heating coil is improved, and it is corroded even in high temperature water or steam. It maintains a stable steam generation state.

The vapor generating means is composed of an evaporation chamber composed of a heating element made of a magnetic material or a metal material, an induction heating means for induction heating the evaporation chamber, and a water supply means for supplying water to the evaporation chamber. By doing so, in the evaporation chamber, the wall of the evaporation chamber is heated by the action of the induced current induced by the magnetic field generated by the alternating current sent from the induction heating means. Due to the heat generated on the wall surface, the water sent from the water supply means is vaporized and becomes steam and sent to the inside heating means.

The inside heating means for raising the temperature in the oven is a heating chamber, a heat generating portion made of a magnetic material or a metal material arranged in the heating chamber, and an induction heating means including an induction heating coil and an inverter circuit. With this configuration, when alternating current is supplied to the induction heating coil from the inverter circuit, the alternating magnetic field lines generated by the induction heating coil penetrate through the heating portion made of a magnetic material or a metal material. The heat generating portion generates heat by the induced current induced by the alternating magnetic force lines. The steam sent from the steam generating means is heated by the heat generating portion to become high temperature steam and flows into the oven. This high temperature steam raises the temperature around the object to be heated in the oven. At the same time, the object to be heated is humidified.

The heating means for raising the temperature inside the oven includes a heating chamber mounted on at least one wall of the oven, a heat generating portion provided in the heating chamber and made of a magnetic material or a metal material, and an induction member. By comprising the heating coil and the induction heating means including the inverter circuit, when the alternating current is supplied from the inverter circuit to the induction heating coil in the heating section of the heating chamber, the alternating magnetic field lines generated by the induction heating coil are magnetic materials or It penetrates through the heat generating portion made of a metal material. The heat generation part in the heating chamber generates heat due to the induced current induced by the alternating magnetic force lines. The steam sent from the steam generating means enters a heating chamber provided on the wall of the oven, becomes high temperature steam, and diffuses into the oven.

The inside heating means for raising the temperature in the oven comprises a heating element mounted on at least one wall of the oven, and a blower for conveying and circulating the heat generated by the heating element to the oven. The steam sent from the generating means into the oven diffuses into the air inside the oven and then circulates inside the oven by the blower. During this circulation, the heating element heats the high-humidity air, and the temperature around the object to be heated in the oven rises. At the same time, the object to be heated is humidified.

A state detecting means for detecting the amount and temperature of steam in the oven humidified and heated by the dielectric heating means, the steam generating means, and the inside heating means is provided, and the amount of steam corresponding to the kind and amount of the object to be heated is adjusted. At least one of the temperature and the humidity in the oven is provided by providing a temperature control unit for controlling the temperature in the control unit and heating with one or more vapor amount and temperature according to the object to be heated. The control unit adjusts the heating state of the object to be heated based on the signal of the state detecting means for detecting the temperature of the object to be heated, and the steam heating process of the object to be heated is adjusted to a desired temperature, and the heating finish is automatically determined. The automation of cooking by steam heating can be realized.

[0028]

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

FIG. 1 is a principle block diagram showing an embodiment of the present invention. In FIG. 1, 10 is a steam generating means for heating and evaporating the water sent from the water supply means 11. The steam generated by the steam generating means 10 is heated by the in-compartment heating means 12 to become high-temperature steam and flows into the oven 13. The high temperature heating steam keeps the inside of the oven 13 at a predetermined temperature and humidity. The steam generating means 10 and the in-compartment heating means 12 include a control unit 14
The amount of steam and the temperature in the oven 13 are controlled by the adjusting unit 15 to humidify and heat to a predetermined value.

Reference numeral 16 is a microwave generator for showing an embodiment of a dielectric heating means for heating the food 17.

The humidity sensor 18 and the temperature sensor 19 detect the humidity and temperature in the oven 13 and send a detection signal to the control section 14, and the steam generating means 10 and the inside heating means 12 are based on these signals. The amount of electric power for evaporation and heating is controlled to an appropriate value by being controlled by the adjusting unit 15.

A state sensor 20 detects at least one of gas, steam, internal temperature, water content, pressure, etc. generated by the food 17 which is the object to be heated in the oven 13, and outputs the signal to the control unit 14. It is something to send. The control unit 14 controls the steam generating means 10, the inside heating means 12, the dielectric heating means 16 and the like based on this detection signal, and automatically adjusts the steam heating of the food 17.

The steam generating means 10 includes an inflow passage 21 and an outflow passage 2.
The water channel is configured by the evaporation chamber 23 having two. An induction heating coil 24 is wound around the evaporation chamber 23, and a heating element 25 serving as a heating element is inserted into the evaporation chamber 23 to form a magnetic circuit component of a magnetic field induced by the induction heating coil 24. There is. Reference numeral 26 is an inverter circuit for generating AC power to the induction heating coil 24. The inflow path 21 is connected to a water supply tank receiving port 28 in which a water supply tank 27 showing an embodiment of the water supply means 11 is placed. The outflow passage 22 is connected to the vapor inflow passage 29 of the inside heating means 12. The water supply port of the water supply tank 27 is placed downward, and the water level of the receiving port 28 becomes constant by the pressure balance between the air layer in the tank, the water level pressure, and the atmospheric pressure, and the water level of the evaporation chamber 23 is also kept constant.

The inside heating means 12 is composed of a heating chamber 31 in which a heater 30 is inserted and a heated steam outflow pipe 32 which communicates with the oven 13.

In the above structure, first, a start signal is sent from the operation section to the control section 14. Upon receiving the start signal, the control unit 14
When a drive signal is issued from the power supply device and the power supply device is started and AC power is sent from the inverter circuit 26 to the induction heating coil 24, AC magnetic field lines are generated around the induction heating coil 24. The alternating magnetic force lines penetrate through the heating element 25. When the direction of the lines of magnetic force changes according to the cycle of the supplied alternating current, an electric force for preventing the change of the lines of magnetic force acts on the heating element 25, and a current in the opposite direction to the coil current flows in the heating element 25. Induced. The induced current causes the heating element 25 to generate heat, and the water supply means 11 causes the evaporation chamber 2 to move.
The water flowing into 3 is heated. As the heating progresses, the water vaporizes and becomes steam, which then enters the heating chamber 31 of the internal heating means 12 from the outflow path 22 through the steam inflow path 29. Heating chamber 31
The entering steam is heated by the heater 30. The heated steam becomes wet steam or superheated steam having a high degree of dryness, and is sent from the heated steam outflow pipe 32 to the oven 13 to raise the temperature in the oven 13.

The food 17 placed in the oven 13 is heated by the dielectric heating means 16 from the inside of the food, and at the same time, it is heated by steam in a high temperature heating atmosphere.

The humidity and temperature in the oven 13 receive detection signals sent from the humidity sensor 18 and the temperature sensor 19, the steam generating means 10 and the inside heating means 12 are controlled by the control section 14, and the control section 14 receives them. The food 17 is adjusted to a set value according to the type and amount. As an example of the set value, the oven 13
Steam heating at low temperature of about 60-70 ° C
Steam heating at about 0 ° C., dry steam heating at about 150 to 200 ° C., or a combination thereof can be used.

When the cooking by the temperature and steam in the dielectric heating means 16 and the oven 13 progresses, and when the cooking is completed, the detection signal sent from the state sensor 20 is received and the cooking is automatically stopped.

According to the structure of this embodiment, in addition to the heating from the inside of the food by the dielectric heating, the heating is performed by the high heat transfer of the normal air heat transfer and the latent heat of the steam from the outer circumference, which enables high-speed cooking, and By controlling the temperature and amount of steam in the oven, dry heating by dry steam, steam heating by wet steam or a combination of these can be freely performed, and uniform and optimal speed cooking according to the type and amount of food. You can

Further, in the steam generating means, the water sent from the water supply means is directly vaporized by contact with the heating element which is heated by the action of the induced current induced by the magnetic field generated by the alternating current sent from the induction heating means. . Then, the vapor is generated and stopped by this vaporization instantaneously.

2 and 3 show another embodiment of the steam generating means 10, and the same parts as those in the above embodiment use the same numbers.

The steam generating means 10 is an embodiment using an induction heating means. The induction heating means includes a heating section including an evaporation chamber 33 having a rectangular cross section and a heating element 25 disposed in the evaporation chamber and having a rectangular cross section, which is made of a magnetic material or a metal material, an induction heating coil 24, and an inverter circuit 26. And an electric power supply section.

The metal material used as the heating element 25 is a metal foam as shown in FIG. 3 and has an assembly structure of innumerable continuous thin wires 34. Reference numeral 35 is a space between the line bodies 34.

Further, the heating element 25 made of a magnetic material or a metal material is made of Ni, Ni--Cr alloy, stainless alloy,
It is composed of a uniform waterproof metal foam.

In the above structure, when the power supply device is started and electricity is supplied to the power supply section, when AC power is sent from the inverter circuit 26 to the induction heating coil 24, AC magnetic field lines are generated around the induction heating coil 24. To do. With this AC magnetic field line, the heating element 25 is operated by the same action as in the above embodiment.
Induction current is induced in the heating element 25, and the heating element 25 generates heat to cause evaporation chamber 2
The water in 3 is heated and vaporized.

According to the structure of this embodiment, the alternating magnetic field lines penetrate through the heat generating portion having a rectangular cross section in the front circumference with substantially the same strength, and all the water in the evaporation chamber is in contact with the heat generating portion. Efficient steam generation.

Further, since the heat generating portion is a metal foam body, it has a large surface area for heat generation, which suppresses the temperature rise of the heat generating portion, prevents the generation of scale that occurs when water evaporates, improves the heat generating efficiency, and increases the heating rate. You can speed it up.

Further, by using a water resistant foam metal body such as Ni, Ni-Cr alloy, stainless alloy, etc., the efficiency of induction current generation by the alternating magnetic field lines generated by the alternating current sent to the induction heating coil is improved, A stable steam generation state is maintained without being corroded even in high temperature water or steam.

FIG. 4 shows another embodiment of the steam generating means 10, and the same parts as those in the above embodiment use the same numbers.

Reference numeral 36 is an evaporation chamber composed of a heating element made of a magnetic material or a metal material. An induction heating coil 24 is wound around the outer periphery of the evaporation chamber 36, and a core 37 having an inflow passage 21 is mounted inside.

The inflow path 21 is connected to a city water pipe which is a water supply source through a water flow control means 38 which is a water supply means. Reference numeral 39 denotes a sensor chamber in which a water level sensor 40 that constitutes water level detection means is installed.

In the above structure, when AC power is sent to the induction heating coil 24, AC magnetic field lines are generated around the induction heating coil 24. The alternating magnetic force lines penetrate the outer wall portion of the evaporation chamber 36, induce an induced current in the outer wall portion, and heat the evaporation chamber wall. Due to the heat generated in the outer wall portion, the water sent from the water supply means to the evaporation chamber 36 is vaporized between the outer wall and the core 37 and becomes steam to be sent to the inside heating means 12.

According to the structure of this embodiment, since the wall surface of the evaporation chamber serves as a heating element and no heating heater is required, the structure is simple and the cost can be reduced. In addition, it is easy to remove scale and the like attached to the inner wall of the evaporation chamber.

FIG. 5 shows another embodiment of the inside heating means 12, and the same parts as those in the above embodiment use the same numbers.

The inside heating means 12 has a flow path structure including a steam inflow path 29 and a heating chamber 31 having a heated steam outflow pipe 32. An induction heating coil 41 is wound around the outer periphery of the heating chamber 31, and a heating element 42 made of a metal material that forms a magnetic circuit of a magnetic field induced by the induction heating coil 41 is inserted into the heating chamber 31. . Reference numeral 43 is an inverter circuit for generating AC power to the induction heating coil 41. The steam inflow path 29 is connected to the steam generating means 10.

In the above structure, when the power supply device is started and AC power is sent from the inverter circuit 43 to the induction heating coil 41, AC magnetic field lines are generated around the induction heating coil 41. The alternating magnetic force lines penetrate through the heating element 42. When the direction of the lines of magnetic force changes according to the cycle of the supplied alternating current, an electric force for preventing the change of the lines of magnetic force acts on the metal body 42, and a current in the opposite direction to the coil current flows in the heating element 42. Induced. The heating element 42 generates heat by this induced current, and the steam sent from the steam generating means 10 to the heating chamber 31 is heated. The heated steam becomes wet steam or superheated steam having a high degree of dryness and is sent from the heated steam outflow pipe 32 to the oven 13.
Increase the temperature in 3.

According to the structure of this embodiment, the power supply line to the heating element is unnecessary, and there is no risk of leakage, and the safety can be improved. Further, since the heating element is in direct contact with steam and air, the temperature inside the oven can be raised quickly.

FIG. 6 shows another embodiment of the inside heating means 12, and the same parts as those in the above embodiment use the same numbers.

Reference numeral 44 denotes a heating chamber mounted on the side wall of the oven 13, 45 denotes an induction heating coil wound in a plane on the outer wall side, and 46 denotes a magnetic material or a metal material disposed in the heating chamber 44. A heating element, 47 is a heated steam outlet. Between the steam inflow path 29 communicating with the outflow path 22 of the steam generating means 10 and the oven 13, a bypass path 49 to which a blower 48 is attached is provided. 50 is the induction heating coil 45
It is an inverter circuit for generating AC power to.

In the above structure, when the power supply device is started and AC power is sent from the inverter circuit 50 to the induction heating coil 45, AC magnetic field lines are generated around the induction heating coil 45. The alternating magnetic force lines penetrate through the heating element 46. When the direction of the lines of magnetic force changes according to the cycle of the supplied alternating current, an electric force for preventing the change of the lines of magnetic force acts on the heating element 46, and a current in the direction opposite to the coil current flows in the heating element 46. Induced. The heating element 46 generates heat by this induced current, and the steam sent from the outflow passage 22 of the steam generating means 10 to the heating chamber 44 is heated. The heated steam becomes wet steam or superheated steam having a high degree of dryness and is sent from the heated steam outlet 47 to the oven 13 to raise the temperature in the oven 13. The heated steam in the oven 13 is sucked into the bypass path 49 by the blower 48, then enters the heating chamber 44 from the steam inflow path 29, is heated and is circulated and heated back into the oven 13.

According to the structure of this embodiment, since the heating element is arranged in the oven, the heat loss is small and the heating in the oven rises quickly.

FIG. 7 shows an embodiment of the power supply section of the induction heating means. In the figure, 49 is a power supply circuit, 50 is an inverter circuit, and 51 is a circuit load changeover switch for the steam generation induction heating coil 24 and the interior heating induction heating coil 45.

In the above structure, when only steam is generated, the changeover switch 51 is set to the contact 1 side. Inverter circuit 5
The AC power from 0 is supplied to the induction heating coil 24 for steam generation, and the heating element 25 of the steam generating means 10 is heated to generate steam.

Next, in the case of only heating the inside of the oven, the changeover switch 51 is set to the contact 2 side. AC power from the inverter circuit 50 is supplied to the induction coil 45 for heating the inside of the refrigerator,
The heating element 46 generates heat, and the steam generating means 10 moves the heating chamber 44.
The steam sent to is heated.

When steam generation and heating in the refrigerator are performed at the same time, the change-over switch 51 is duty-controlled to distribute AC power to both.

According to the structure of this embodiment, since the heating element is arranged in the oven, there is little heat loss, and the heating in the oven rises quickly. The electric circuit of the power supply unit can be made into one box, and the device can be made compact and the cost can be reduced.

8 and 9 show another embodiment of the inside heating means 12, and the same parts as those in the above embodiment use the same numbers.

Reference numeral 52 denotes a heating unit mounted on the back wall of the oven 13, 53 is a heating chamber, and 54 is a heating chamber 5.
Reference numeral 55 denotes a heating element mounted in the heating unit 3, and 55 denotes a blower for heating and circulating the air in the oven 13.

In the above structure, when the power supply is started and the heating unit 52 is powered on, the heating element 54 generates heat and the blower 55 circulates and stirs in the oven 13. As a result, hot air circulates in the oven 13 and the temperature in the oven 13 is increased.

On the other hand, in the steam generating means, when the power supply device is started, AC power is sent from the inverter circuit 26 to the induction heating coil 24, and AC magnetic field lines are generated around the induction heating coil 24. The alternating magnetic force lines penetrate through the heating element 25. When the direction of the lines of magnetic force changes according to the cycle of the supplied alternating current, an electric force for preventing the change of the lines of magnetic force acts on the heating element 25, and the heating element 2
A current opposite to the coil current is induced in the coil 5. The induced current causes the heating element 25 to generate heat, the water flowing from the water supply means 11 into the evaporation chamber 23 is heated and vaporized, enters the oven 13 from the outflow passage 22 through the vapor inflow passage 29, and enters the oven 13. Becomes hot and humid.

According to the construction of this embodiment, the temperature distribution in the oven can be made uniform by the stirring action of hot air, and the heat transfer rate to the object to be heated such as food is improved and the cooking speed can be increased. it can.

FIG. 10 is a sequence diagram showing the cooking operation. For example, in the case of food A, the control unit 1 receives the detection signals from the humidity sensor 18 and the temperature sensor 19 when cooking is started.
4. Controlled by the controller 15, the dry steam state at 200 ° C. is reached, and heating is performed while drying. Then, when the drying is completed, finishing heating is carried out for a short time with low temperature steam at 80 ° C., and the cooking is completed. Further, in the case of the food B, based on the control signals of the control unit 14 and the adjusting unit 15 as described above,
After heating with a slight heating steam of 0 ° C., it is dried and heated at 170 ° C. to finish the cooking. In the case of the food C, similarly, based on the control signals of the control unit 14 and the adjusting unit 15, 6
Perform low-temperature cooking with low-temperature steam at 0 ° C.
Cooking is completed by heating with heating steam at 70 ° C.

Further, by controlling the humidification amount, the set value step time of the temperature and the end time based on the signal sent from the state sensor 20, the whole cooking cycle can be automated.

As in this embodiment, the cooking environment in the oven is controlled by the control unit 14 and the adjusting unit 15 by receiving the detection signals from the humidity sensor 18 and the temperature sensor 19, so that the type and amount of food can be controlled. Depending on the material, the amount of steam and the temperature can be adjusted to carry out heating cooking, and excellent cooking according to the material can be performed.

[0075]

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

1. In addition to heating from the inside of the food by dielectric heating, high-speed cooking becomes possible due to heating with high heat transfer of normal air heat transfer and latent heat of steam from the outer periphery, and by controlling the temperature and steam amount in the oven, Dry heating with dry steam, steam heating with wet steam, or combination heating thereof is freely performed, and uniform and optimum speed cooking according to the type and amount of food can be performed.

2. In the steam generating means, the water sent from the water supply means is directly contacted with the heating element which heats up by the action of the induced current induced by the magnetic field generated by the alternating current sent from the induction heating means to be vaporized. Then, the vapor is generated and stopped by this vaporization instantaneously.

3. An alternating magnetic field line penetrates the heat generating portion having a rectangular cross section in the front circumference with substantially the same strength, and all the water in the evaporation chamber is in contact with the heat generating portion, so efficient steam generation is achieved.

4. Since the heat generating portion is a metal foam body, it has a large heat generating surface area, which can suppress the temperature rise of the heat generating portion, prevent the generation of scale that occurs when water evaporates, improve the heat generating efficiency, and accelerate the heating speed.

5. By using a water-resistant foam metal body such as Ni, Ni-Cr alloy, stainless alloy, etc., the efficiency of induction current generation by the alternating magnetic field lines generated by the alternating current sent to the induction heating coil is improved, and even in high-temperature water or steam. Maintains a stable steam generation state without being corroded.

6. Since the wall surface of the evaporation chamber serves as a heating element and does not require a heater for heating, the structure is simple and the cost can be reduced. In addition, it is easy to remove scale and the like attached to the inner wall of the evaporation chamber.

7. The power supply line to the heating element is not required, so there is no risk of leakage and safety can be improved. Further, since the heating element is in direct contact with steam and air, the temperature inside the oven can be raised quickly.

8. Since the heating element is arranged in the oven, heat loss is small and heating in the oven rises quickly.

9. Due to the stirring action of hot air, the temperature distribution in the oven can be made uniform, and the heat transfer coefficient to the object to be heated such as food is improved and the cooking speed can be increased.

10. By receiving the detection signals from the humidity sensor 18 and the temperature sensor 19 and controlling the cooking environment in the oven chamber by the control unit 14 and the adjustment unit 15, the amount of steam and the temperature can be adjusted according to the type and amount of food. It is possible to carry out heating cooking, and it is possible to carry out excellent heating cooking depending on the material.

[Brief description of drawings]

FIG. 1 is a sectional view showing the principle of a heating and cooking device according to an embodiment of the present invention.

FIG. 2 is a perspective view of a steam generating means of the heating and cooking device.

FIG. 3 is a perspective view of a heat generating portion of the steam generating means.

FIG. 4 is a sectional view showing the principle of steam generating means in another embodiment of the heating and cooking apparatus.

FIG. 5 is a sectional view showing the principle of a cooking device according to another embodiment of the present invention.

FIG. 6 is a sectional view showing the principle of a heating and cooking device according to another embodiment of the present invention.

FIG. 7 is an electric circuit diagram of an embodiment of the heating and cooking device.

FIG. 8 is a sectional view showing the principle of a heating and cooking device according to another embodiment of the present invention.

FIG. 9 is a cross-sectional view of the principle of the heating means inside the same cooking device.

FIG. 10: Sequence diagram for cooking operation

FIG. 11 is a front sectional view of a conventional heating and cooking device.

[Explanation of symbols]

 10 Steam Generating Means 11 Water Supplying Means 12 Internal Heating Means 13 Ovens 14 Controller 16 Dielectric Heating Means

Claims (11)

[Claims] 1. An oven for containing an object to be heated, a dielectric heating means for heating food, a steam generating means for generating steam, an inside heating means for raising the temperature in the oven, the dielectric heating means, and steam. And a control unit that controls the state of the inside of the oven by controlling the generating unit and the heating unit in the refrigerator,
A heating and cooking device configured to heat an object to be heated in the oven with dielectric heating and steam in a heating atmosphere. 2. The vapor generating means includes an evaporation chamber, an induction heating means provided in the evaporation chamber, the heating section being made of a magnetic material or a metal material, and an electric power supply section for induction heating the heating section.
The heating and cooking device according to claim 1, wherein the heating and cooking device comprises water supply means for supplying water to the evaporation chamber. 3. The vapor generating means comprises an evaporation chamber having a rectangular cross section,
It is composed of a heat generating portion arranged in the evaporation chamber and made of a magnetic material or a metal material having a rectangular cross section, an induction heating means including an induction heating coil and an inverter circuit, and a water supply means for supplying water to the evaporation chamber. The heating and cooking device according to claim 1. 4. The cooking apparatus according to claim 2, wherein the magnetic material or the metal material is a foam metal body. 5. The cooking apparatus according to claim 2, wherein the magnetic material or the metal body is composed of at least one rectangular tubular body. 6. The cooking apparatus according to claim 4, wherein the magnetic material or the metal material is made of water-resistant foam metal such as Ni, Ni—Cr alloy, stainless alloy, or the like. 7. The vapor generating means comprises an evaporation chamber formed of a heating element made of a magnetic material or a metal material, an induction heating means for induction heating the evaporation chamber, and a water supply means for supplying water to the evaporation chamber. The cooking apparatus according to claim 1, which has been processed. 8. An in-compartment heating means for raising the temperature in the oven is a heating chamber, a heating section made of a magnetic material or a metal material, disposed in the heating chamber, and an induction heating means including an induction heating coil and an inverter circuit. The heating and cooking device according to claim 1, which is constituted by: 9. An in-compartment heating means for raising the temperature in the oven comprises a heating chamber mounted on at least one wall of the oven, a heating section made of a magnetic material or a metal material arranged in the heating chamber, and an induction unit. The heating and cooking device according to claim 1, which is configured by an induction heating unit including a heating coil and an inverter circuit. 10. The heating means for raising the temperature inside the oven comprises a heating element mounted on at least one wall of the oven, and a blower for conveying and circulating heat generated by the heating element to the oven. Item 2. A heating and cooking device according to item 1. 11. A vapor conditioner for detecting the amount and temperature of steam in an oven humidified and heated by an induction heating unit, a steam generating unit, and an internal heating unit, and steam corresponding to the type and amount of an object to be heated. The heating and cooking device according to claim 1, wherein the control unit is provided with a temperature adjusting unit for controlling the amount and the temperature, and heating is performed with one or more vapor amounts and temperatures according to the object to be heated.