JPH08135978A - High frequency heating equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a high-frequency heating device for heating and cooking with good finish without evaporation of water in food and without drying. [Structure] A bottom surface and a side surface are integrally formed of a low dielectric constant material between a high frequency generating means 23 for radiating radio waves into the heating chamber 21 and a high frequency generating means 23 and a food 27 in the heating chamber 21. The steam container 28 is detachably provided, and the steam container 2
8 is provided with water, and steam generated by radio wave heating is discharged into the heating chamber 21 through the opening 30 to heat food by steam and radio waves. [Effect] By radiating steam from the steam container into the heating chamber, the food is wrapped in a high-humidity atmosphere, and by radio wave heating and steam overheating, the moisture of the food is prevented from evaporating, and it is moist without drying. You can cook with a good finish.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high frequency heating device for heating an object to be heated by radio waves.

[0002]

2. Description of the Related Art A conventional example will be described below with reference to FIGS.

FIG. 4 is a sectional view of a conventional high-frequency heating device. The heating chamber 1 is provided with a magnetron 2 as a high frequency generating means on its upper surface. The food 3 in the heating chamber 1 is heated at high frequency by radio waves from the magnetron 2.

FIG. 5 is a sectional view of another conventional high-frequency heating device. The heating chamber 4 is provided with a magnetron 5. A container A6 made of a low dielectric constant material is provided in the heating chamber 4,
There is water 7 in the bottom. A metal container B8 is provided on the container A6. A small hole 9 is provided on the bottom surface of the container B8. The food 10 is placed in the container B8. The upper surface of the container B8 is covered with a lid 11 made of metal. Radio waves from the magnetron 5 heat the water 7 in the container A6 with high frequency to generate steam. This steam enters the container B8 through the small hole 9 and the food 10
Heat steam.

FIG. 6 is a sectional view of another conventional high-frequency heating device. A magnetron 13 is provided in the heating chamber 12. In the heating chamber 12, a food product 14 which is an object to be heated is provided. A tank 15 is provided outside the heating chamber 12, and water 1
Insert 6. A heater 17 is provided at the bottom of the tank 15,
The water 16 is heated to generate steam. The generated steam enters the heating chamber 12 through the pipe 18. The food 14 is heated by radio waves from the magnetron 13 at high frequency. Also food 14
Is also heated by steam from the tank 15.

[0006] With such a conventional structure, the food is subjected to high frequency heating or steam heating.

[0007]

However, in such a structure, in the conventional example shown in FIG. 4, first, water is evaporated from the food when the food is heated by radio frequency waves. As a result, the water content of the food is drained and becomes dry, so that the food becomes hard or dull, and a delicious and moist finish cannot be obtained. A method of wrapping the food in a plastic wrap and heating it is also implemented to remedy this drawback, but the amount of water in the plastic wrap is that the water content of the food is evaporating. Was not enough. In addition, it is not preferable to wrap the food with wrapping, because it is both troublesome and resource saving.

Further, in the conventional example shown in FIG. 5, since the food is heated by the steam, it is possible to prevent the water content of the food from evaporating. However, since the water is once heated by the radio wave and the steam generated thereby is heated, the efficiency is improved. Will become worse, and it will take longer to heat, and the feature of speed of radio wave heating will not be exhibited. Even when the food was cooked, moisture was added to the food too much and it became sticky, which was not preferable.

In addition, the container A can be used to put food in and take it out of the heating chamber.
It was done together with the container B, the lid and the water, and it was heavy and difficult to handle.

Further, in the conventional example shown in FIG. 6, the heating device becomes large in size because there is a device for generating steam such as a tank or a heater. It is troublesome to change the water in the tank and clean the dirt in the tank. Further, since the heater is additionally used, the structure becomes complicated and extra power is required, which is uneconomical.

Further, Japanese Patent Publication No. 4-45956 discloses the use of steam for microwave heating. According to this, the wall-shaped element, which is located and fixed between the space for placing the object to be heated and the microwave generation part, is made of a water-permeable porous material having a microwave transmitting property and a water storing action. It is also said that the surfaces other than the surface facing the object to be heated are coated with the water impermeable layer. That is, in the wall-shaped element made of a porous material, the surface facing the object to be heated is directly exposed in the heating chamber without any coating.

Since the heating chamber side of the bottom surface and the side surface of the porous material that absorbs water is in an open state, only a certain amount of water can be absorbed, and if it absorbs more than a certain amount, it becomes a water drop and drops. It was not preferable in terms of cooking performance and handling of the equipment, such as being wet with water and accumulating in the heating chamber.

All the conventional examples are not preferable because they have drawbacks such as the quality of cooking, heating efficiency, and difficulty in handling.

In view of the above, the present invention provides a steam generating structure which improves the workability of cooking by preventing radio wave heating while suppressing evaporation of water in foods, prevents water drops from dropping, and is easy to handle. The steam container for storing water has a structure in which the bottom surface and the side surface are integrally formed so as not to leak water. A first object of the present invention is to provide a high-frequency heating device that does not have a problem such as dropping as water drops even if water is supplied to the device.

A second object is to provide a high-frequency generator and a steam generator on the upper surface of the heating chamber to make the discharge of steam more uniform and improve the quality of cooking.
An object of the present invention is to provide a high-frequency heating device having a steam generating structure that is easy to handle.

A third purpose is to irradiate radio waves and steam,
It is an object of the present invention to provide a high-frequency heating device that improves the uniformity of steam by convection of steam in the heating chamber and performs uniform cooking results by performing the heating from the lower surface.

[0017]

[Means for Solving the Problems] That is, a heating chamber and a high-frequency generating means connected so as to radiate radio waves from the side surface of the heating chamber are provided, and the high-frequency generating means and the object to be heated are provided on the side surface in the heating chamber. The bottom and side surfaces are integrally formed of a low dielectric constant material between the two, and a steam container of a shape that does not leak water is detachably installed, and a lid formed of a low dielectric constant material is installed on the top surface of the steam container. In the container, water for generating steam is provided alone, or is provided by absorbing water in a water absorbing body that absorbs water, and the structure is such that the steam is discharged into the container through an opening provided in the lid or the upper part of the steam container, It is configured to heat and cook with high frequency and steam.

Further, the heating chamber is provided with a high frequency generating means coupled so as to radiate radio waves from the upper surface of the heating chamber, and a low dielectric constant material is provided between the high frequency generating means and the object to be heated on the upper surface of the heating chamber. The bottom surface and side surfaces are integrally formed by using, and a steam container of a shape that does not leak water is detachably installed, a lid made of a low dielectric constant material is installed on the top surface of the steam container, and steam is generated in the steam container. Water for doing so, or provided by absorbing water in a water absorbing body that absorbs water, and has a configuration in which steam is discharged into the refrigerator from an opening provided in a lid or a steam container,
It is configured to heat and cook with high frequency and steam.

Further, the heating chamber is provided with a high frequency generating means coupled so as to radiate radio waves from the lower surface of the heating chamber, and a low dielectric constant material is provided on the bottom surface of the heating chamber between the high frequency generating means and the object to be heated. The bottom and side surfaces are integrally formed by means of which a steam container with a shape that does not leak water is detachably provided, a lid made of a low dielectric constant material is provided on the top surface of the steam container, and steam is generated in the steam container. Water for use alone, or provided by absorbing water in a water absorbing body that absorbs water, and has a configuration in which steam is discharged into the refrigerator from an opening provided in a lid or a steam container,
It is configured to heat and cook with high frequency and steam.

[0020]

In the high frequency heating apparatus of the present invention, the radio waves heat the water in the steam container provided between the high frequency generating means and the food to generate steam. Radio waves that have passed through the steam container and the steam that is generated irradiate the food, and heat the food with high frequency and steam. Since steam heats by both radio waves and steam while preventing evaporation of water in food, there is no drying of food,
It can be cooked moistly and deliciously.

Since the radio waves are partially absorbed by the water in the steam container, the radio waves are irradiated in a attenuated state, so that the food is heated while suppressing a rapid temperature rise, and furthermore, the food is heated so as to wrap the food. , Acts to perform uniform heating without unevenness.

Since the bottom surface and the side surface of the steam container are formed integrally with each other so as not to leak water, it is possible to provide water alone in the steam container, or the water absorbent body absorbs water. Even in the case, even if water is added in excess of the water absorption amount, it does not spill outside, and has an effect of sufficiently retaining water.

Further, by providing a water absorbing body for absorbing water in the steam container and heating the water in the water absorbing body by radio wave, it is possible to prevent hot water from boiling in the steam container and water droplets from jumping out of the container. It is possible to irradiate food with uniform steam. Since water is absorbed by the water absorbing body, even if the steam container is carried while it is filled with water, the water does not easily spill outside, and it is safe to handle even in a hot water state.

Further, by providing a high-frequency generating means and a steam generator which are connected so as to radiate radio waves from the upper surface of the heating chamber, the water in the steam container can be arranged on the entire surface of the heating chamber, and the water is uniformly heated. It can be released indoors and has the function of making radio wave heating and steam heating by steam more uniform.

Further, by radiating radio waves and steam from the lower surface, the generated steam rises upward, and convection of steam occurs in the heating chamber, which further improves the uniformity of steam and makes it more uniform. It works to obtain the quality of cooking.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A high frequency heating apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a sectional view of a high frequency heating apparatus according to an embodiment of the present invention. As shown in Figure 1,
A waveguide 22 is connected to the side surface of the heating chamber 21. A magnetron 23, which is a radio wave oscillation tube, is provided in the waveguide 22. Radio waves from the magnetron 23 are emitted from the opening 24 into the heating chamber 21 via the waveguide 22. Heating chamber 21
A turntable 25 is provided at the bottom of the inside and is rotationally driven by a motor 26. A food 27, which is an object to be heated, is placed on the turntable 25.

A place between the radio wave irradiation section and the food 27,
That is, in this embodiment, the bottom surface and the side surface are integrally formed of a low dielectric constant material on the right side surface of the heating chamber, and the steam container 28 having a shape that does not leak water is detachably provided. A lid 29 made of a low dielectric constant material is provided on the upper surface of the steam container 28 to seal the steam container 28. The lid 29 is provided with an opening 30 for discharging vapor.

Water is put in the steam container 28. As another embodiment, the water in the steam container 28 is made to exist by interposing a water absorbing body 31 made of a material that absorbs water such as a fibrous material or a sponge-like material.

With this structure, when the radio wave from the magnetron 23 is irradiated into the heating chamber 21, first, the steam container 2
The water inside 8 or the water absorbed by the water absorber 31 is heated by high frequency. As a result, the water is heated, becomes steam, evaporates, and is discharged into the heating chamber 21 through the opening 30. As a result, the inside of the heating chamber 21 is in a high humidity state with high humidity, wraps around the food 27, and steam partially steams the food 27. The radio wave from the magnetron 23 heats the water in the steam container 28 as described above, while the remaining radio wave passes through the water and is irradiated on the food 27 to heat the food 27 at a high frequency. In this way, the food 27 is subjected to radio wave heating and steam heating at the same time in a high humidity environment in the heating chamber 21.

(Embodiment 2) FIG. 2 is a sectional view of a high frequency heating apparatus according to another embodiment of the present invention. As shown in FIG. 2, a waveguide 42 is provided above the heating chamber 41. A magnetron 43 is provided in the waveguide 42, and radio waves from the magnetron 43 are transmitted through the waveguide 42 through the opening 44 to the heating chamber 4.
It is irradiated within 1. The electric wave stirring blade 45 is rotationally driven by the motor 46 to make the electric wave in the heating chamber 41 uniform. 47
Is a partition plate composed of a low dielectric constant material. A vapor container 48 made of a low dielectric constant material is provided above the heating chamber 41. The food 48 is placed on the bottom surface of the heating chamber 41.

The upper surface of the heating chamber, which is the radio wave irradiation section, and the food 48
In between, a bottom surface and a side surface are integrally formed of a low dielectric constant material, and a steam container 50 having a shape that does not leak water is detachably provided. The upper surface of the steam container 50 is provided with a lid 51 made of a low dielectric constant material to seal the steam container 50. The steam container 50 is provided with an opening 52 for discharging steam.

Water is put in the steam container 50. Alternatively, the water in the steam container 50 is allowed to exist by interposing a water absorbing body 53 made of a material that absorbs water such as a fibrous material or a sponge-like material.

With this structure, when the radio wave from the magnetron 43 is irradiated into the heating chamber 41, first, the steam container 5
The water in 0 or the water absorbed by the water absorbing body 53 is heated by high frequency. As a result, the water is heated, becomes vapor, evaporates, and is uniformly discharged from the upper surface in the heating chamber 41 through the opening 52 over the entire heating chamber. As a result, the inside of the heating chamber 41 is in a high humidity and high humidity state, and the food 4
While wrapping around 8, steam partially heats the food 48. The radio waves from the magnetron 43 heat the water in the steam container 50 as described above, while the remaining radio waves pass through the water and irradiate the food 48 to heat the food 48 at a high frequency. In this way, the food 48 is subjected to radio wave heating and steam heating simultaneously and uniformly in a high humidity environment in the heating chamber 41.

(Embodiment 3) A waveguide 62 is provided below the heating chamber 61. The waveguide 62 is provided with a magnetron 63, and the radio wave from the magnetron 63 is radiated from the opening 64 into the heating chamber 61 via the waveguide 62. The electric wave stirring blade 65 is rotationally driven by the motor 66 to make the electric wave in the heating chamber 61 uniform. 67 is a partition plate made of a radio wave transmitting material such as crystallized glass.

At the bottom of the heating chamber 61, a bottom surface and a side surface are integrally formed of a low dielectric constant material, and a steam container 68 having a shape that does not leak water is detachably provided. Water is provided in the steam container 68 alone or in a water absorbing body 69. The upper surface of the steam container 68 is formed of a low dielectric constant material, and a lid 71 having an opening 70 is provided. 72 is a food that is an object to be heated, at a height located above the steam container 68,
It is placed on the saucer 73 and provided. The tray 73 has many openings.

With such a configuration, the magnetron 63
Radio waves heat the water in the steam container 68 by radio waves. As a result, the water is heated to become steam, and from the opening 70, the heating chamber 61
It is released inside. Since the temperature of steam is high, it rises upward. As a result, the entire heating chamber 61 is filled and the inside of the heating chamber 61 is brought into a high humidity state. Steam is food 7
It will be in a state of wrapping 2 from the whole. The radio wave that has passed through the water in the steam container 68 is irradiated on the food 72 in a partially attenuated state, and the food 72 is heated by the radio wave.

[0038]

As described above, according to the high frequency heating apparatus of the present invention, the following effects can be obtained.

(1) Since the steam is generated in the heating chamber by heating the water in the steam container by the radio wave, the inside of the heating chamber becomes a very high humidity atmosphere. When the food is radio-wave heated in this state, the amount of water that evaporates from the food is balanced with the vapor that tries to enter the food, and the water inside the food does not move.

By this, even if the food is heated, it is possible to prevent the water content in the food from being evaporated and reduced, and the food is delicious, without becoming dry, hard, and dry. A moist finish will be obtained.

(2) Since the radio waves are partially absorbed by the water in the steam container, they are irradiated in a attenuated state, so that the food is heated while suppressing a rapid temperature rise, and the food is heated so as to wrap the food in steam. As a result, uniform heating can be performed without unevenness, and good heating can be achieved from this aspect.

(3) It is not necessary to wrap the food with a wrap in order to reduce the evaporation of water in the food as in the conventional case, and it is possible to save extra time during cooking.
It can be cooked easily and easily. It is also preferable from the viewpoint of resource saving that it is not necessary to use consumable items such as wraps.

(4) Compared with the conventional structure in which water is heated by radio waves to convert most of the energy into steam and the food is heated by steam, the present invention heats by both radio wave heating and steam heating. It is possible to efficiently heat and cook in a short time without impairing the speed of heating. Even if the cooking result is good, the food will not be too sticky due to the excessive water content of steam.

(5) Since a steam container is provided in the heating chamber and steam is generated by heating by radio waves, the structure is extremely simple as compared with a structure in which a tank or a heater is provided outside the heating chamber to generate steam. You can Further, it is possible to solve the problem that the steam generator is provided outside the heating chamber and the heating device becomes large in size to take up an installation place, and a small and compact device can be realized. It also saves energy without consuming extra power to the heater.

(6) By providing a water absorbing body for absorbing water in the steam container, the water in this water absorbing body is heated by radio wave, so that hot water may boil in the steam container or water droplets may fly out of the container. It is possible to prevent the occurrence of dripping and to irradiate food with uniform steam.

Since water is absorbed by the water absorbing body, even if the steam container is carried while it is filled with water, the water is unlikely to spill outside and is safe to handle, especially in hot water.

(7) The steam container for storing water can be provided alone by forming the bottom surface and the side surface integrally so as not to leak water. Alternatively, even if water is provided by absorbing water in the water absorbent body, even if water is supplied in excess of a certain amount, it will not drop as water droplets, so handling of water absorption is rough and care should be taken. It becomes a device that is easy to handle. Further, it is not necessary to provide a special device for absorbing a certain amount of water, and the structure can be simple. Water droplets can be dripped onto the food and the finished food can be heated without impairing the heating performance of the food.

(8) By providing the steam generator on the upper surface of the heating chamber, the steam is discharged more uniformly and the steam hits the entire surface of the food, so that the cooking performance can be further improved. In addition, compared to the configuration in which the steam generator is installed on the side, it does not interfere with the taking in and out of food, is easy to handle, and since it can be placed on the entire bottom surface of the heating chamber, it can heat a large amount of food. can do.

(9) The high frequency generator and the steam generator are
By arranging it on the bottom of the heating chamber, it is possible to radiate radio waves and steam from the bottom, and the generated steam rises upward because it has a high temperature, causing steam convection in the heating chamber and filling the heating chamber uniformly. . As a result, the steam becomes a state of wrapping the food, the uniformity of the steam is further improved, and a more uniform cooking result can be obtained.

(10) Since the steam generator is detachably installed in the heating chamber, it can be taken out from the heating chamber and washed, and the handling and maintenance are easy. If heating is performed with the steam generator removed, heating can be performed only by radio waves, and heating conditions can be selected according to the type of food.

For example, foods which are not desired to be dried or reduced in water content are heated in a state where steam is generated. Or for foods that should be dried with some moisture removed,
It can be used properly by removing the steam generator and heating only by radio waves.

As described above, according to the present invention, it is possible to provide a high-frequency heating apparatus having a simple structure, excellent cooking performance, economical, and easy to use.

[Brief description of drawings]

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

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

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

FIG. 4 is a sectional view of a conventional high-frequency heating device.

FIG. 5 is a sectional view of another conventional high-frequency heating device.

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

[Explanation of symbols]

 21 heating chamber 23 magnetron (high-frequency generator) 27 food 28 steam container 29 lid 30 opening 31 water absorber 41 heating chamber 50 steam container 51 lid 52 opening 53 water absorbing body 61 heating chamber 68 steam container 69 water absorbing body 70 opening 71 lid

Claims (3)

[Claims] 1. A heating chamber, comprising: a high frequency generating means connected so as to radiate radio waves from a side surface of the heating chamber; and a side surface of the heating chamber between the high frequency generating means and an object to be heated. The bottom and side surfaces are integrally formed of a low dielectric constant material,
A steam container having a shape that does not leak water is detachably provided, an upper surface of the steam container is provided with a lid formed of a low dielectric constant material, and water for generating steam alone in the steam container, Alternatively, it is provided by absorbing water in a water absorbing body that absorbs water.
A high-frequency heating device configured to discharge steam into an interior through an opening provided on the lid or the upper part of the steam container. 2. A heating chamber, and a high frequency generating means coupled so as to radiate radio waves from the upper surface of the heating chamber, wherein the upper surface of the heating chamber is provided between the high frequency generating means and the object to be heated. The bottom and side surfaces are integrally formed of a low dielectric constant material,
A steam container having a shape that does not leak water is detachably provided, an upper surface of the steam container is provided with a lid formed of a low dielectric constant material, and water for generating steam alone in the steam container, Alternatively, it is provided by absorbing water in a water absorbing body that absorbs water.
A high-frequency heating device configured to discharge steam into an interior through an opening provided in the lid or the steam container. 3. A heating chamber, and a high frequency generating means connected so as to radiate radio waves from a lower surface of the heating chamber, wherein a bottom surface of the heating chamber is provided between the high frequency generating means and an object to be heated. The bottom and side surfaces are integrally formed of a low dielectric constant material,
A steam container having a shape that does not leak water is detachably provided, an upper surface of the steam container is provided with a lid formed of a low dielectric constant material, and water for generating steam alone in the steam container, Alternatively, it is provided by absorbing water in a water absorbing body that absorbs water.
A high-frequency heating device configured to discharge steam into an interior through an opening provided in the lid or the steam container.