JP2864893B2 - High frequency 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 high-frequency heating device such as a microwave oven.

[0002]

2. Description of the Related Art FIGS. 6 to 8 show the technology of a conventional high-frequency heating device. The conventional example will be described below with reference to the drawings.

As shown in FIG. 6, a heating chamber 1 is provided with a waveguide 2 connected thereto, and the waveguide 2 is provided with a magnetron 3. Radio waves from the magnetron 3 pass through the waveguide 2 and are radiated from the opening 4 into the heating chamber 1. A radio wave stirring blade 5 is provided at an upper portion of the heating chamber 1 to uniformly stir the radio waves. Reference numeral 6 denotes a driving motor. A receiving tray 7 is provided on the bottom surface of the heating chamber 1 and a food 8 to be heated is placed thereon. The food 8 performs high-frequency heating by radio waves from the magnetron 3.

In FIG. 7, a projection 10 is integrally provided on the left and right side walls of the heating chamber.

A tray 11 is placed on the projection 10 and a food 12 is placed thereon. In FIG. 8, a receiving tray 15 having legs 14 is provided on a mounting table 13 disposed on the bottom surface of the heating chamber, so that the food can be mounted thereon.

[0006] With such a configuration, the food is placed on the bottom of the heating chamber or at a slightly raised position to perform high-frequency heating.

[0007]

However, in such a configuration, when the tray 7 is placed on the bottom of the heating chamber as shown in FIG. 6, when the food is heated, the height of the food in the heating chamber is increased. The heating position cannot be selected, and heating is always performed at the bottom of the heating chamber.

From the viewpoint of the degree of radio wave irradiation in the heating chamber, the uniformity of the radio wave, and the heating efficiency, it is not always optimal to heat all foods at the bottom of the heating chamber. In many cases, heating is better when the mounting position is changed, but in such a configuration, heating can be performed only at the bottom surface of the heating chamber.

Further, even if a large amount of food that cannot be placed by one step is to be heated at a time, only one saucer can be stored, so that a large amount of food cannot be heated. There was no.

Conventionally, as shown in FIG. 7, a plurality of projections 10 are provided on the side surface of the heating chamber, and the position of the mounting table 11 is selected.
The height has been selected according to the food, and heating has been performed at an optimum position. In addition, if a plurality of mounting tables 11 are used, food can be mounted in multiple stages and mass cooking can be performed. However, since the radio waves are emitted from the upper surface, the food in the upper stage is more likely to be heated than the food in the lower stage, and uneven heating is possible.

Also, by providing projections in the heating chamber, it is difficult to clean the heating chamber, such as when the wall surface becomes uneven and food residue accumulates or when the wall surface becomes dirty. Further, when heating was performed on the bottom surface of the heating chamber, the protrusion hindered the use of the heating chamber.

Further, a tray 15 having legs as shown in FIG.
There is also a method of heating the food by raising the position of the food, but in this case, when the pan 15 is not used, the pan 15 is bulky due to the presence of the legs 14, so that a lot of storage space is required. It was difficult to use from this aspect.

In view of the above, the present invention irradiates the heating chamber uniformly and uniformly with radio waves, allows the food mounting position in the heating chamber to be freely selected and heats in an optimum state, and allows the shelf and the mounting table to be detachable. It is a first object of the present invention to provide a high-frequency heating device which is easy to care and handle.

It is a second object of the present invention to provide a high-frequency heating apparatus in which a large amount of food can be placed in a heating chamber in multiple stages and a large amount of food can be cooked at a time.

[0015]

Therefore, in order to achieve the first object, the present invention has a structure in which radio waves are uniformly radiated from both the upper surface and the lower surface of the heating chamber, and both right and left sides of the heating chamber are flattened. A pair of shelves made of a material having a low dielectric constant is detachably provided on both side surfaces, and a groove or a protrusion is horizontally provided on the shelf, and a low dielectric material is fitted into the groove or the protrusion. The object-to-be-heated mounting table is detachably provided.

According to another aspect of the present invention, a plurality of grooves or projections are provided on a pair of shelves provided on the side of the heating chamber in a horizontal direction, and a low dielectric material is fitted into the grooves or projections. In this configuration, a plurality of mounting tables made of a rate material are detachably provided.

[0017]

The high-frequency heating device of the present invention irradiates radio waves from above and below the heating chamber, and detachably provides a pair of shelves and a heated object mounting table fitted to the shelves on both side surfaces in the heating chamber. The food to be heated can be held in a state of being lifted to a certain height from the bottom of the heating chamber. By mounting and dismounting the mounting table from the heating chamber and selectively using the food, the height can be selected according to the food. This allows the food to be heated in the best condition, with the radio waves being uniformly and most efficiently heated. If the shelves and trays are removed from the heating chamber, the heating chamber is easy to care for because both sides are flat.

Further, by providing a plurality of grooves or projections on the shelf and providing a plurality of mounting tables which fit into the grooves, food can be placed in multiple stages in the heating chamber. It can be heated evenly without heat.

[0019]

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

As shown in FIG. 1, a waveguide 22 is connected to and provided on the upper surface of the heating chamber 21, and a magnetron 23 which is an oscillation tube of a radio wave is provided in the waveguide 22. Radio waves from the magnetron 23 pass through the opening 24 and irradiate into the heating chamber 21 from above. The radio wave stirring blade 25 provided at the upper part of the heating chamber 21 is rotationally driven by a motor 26 to uniformly stir the radio wave. Reference numeral 27 denotes a partition plate made of a low dielectric material.

A waveguide 28 is connected to the lower surface of the heating chamber 21, and a magnetron 29 is provided on the waveguide 28. Radio waves from the magnetron 29 pass through the opening 30 and irradiate the inside of the heating chamber 21 from below. The electric wave stirring blade 31 is rotated by the motor 32 to uniformly stir the electric wave. 33 is a bottom plate made of a low dielectric constant material such as crystallized glass.

The side walls and the bottom surface of the heating chamber 21 have irregularities.
It is formed almost flat. A pair of shelves 34 made of a low dielectric material are provided on the left and right side walls so as to be detachable from the heating chamber 21. The shelf 34 is provided with a groove 35 in the horizontal direction, and is detachably provided so as to fit a mounting table 36 made of a low dielectric constant material. The groove 35 is provided on the shelf 3
Even if it is composed of the projections projecting from 4, the mounting table 36 can be supported detachably.

The food 3 to be heated is placed on the mounting table 36.
7 is placed, and high-frequency heating is performed uniformly on the food from above and below by radio waves from magnetrons 23 and 29.

FIG. 2 is a perspective view showing a state in which the shelf and the mounting table in the embodiment of the present invention shown in FIG. 1 are removed from the heating chamber. The shelf 34 has a groove 35 into which a mounting table 36 is fitted. By fitting the groove 35 and the mounting table 36 and storing them in the heating chamber, the shelf 34 is positioned on the left and right wall surfaces of the heating chamber to prevent falling, and the mounting table 36 is also positioned at a predetermined height from the bottom surface of the heating chamber. Is held.

As shown in FIG. 2, the shelf 34 and the mounting table 36
Can be disassembled into pieces when removed from the heating chamber.

FIG. 3 shows another embodiment of the present invention. On the left and right wall surfaces of the heating chamber 41, shelves 42 made of a low dielectric constant material are provided detachably. The shelf 42 is provided with a plurality of grooves 43 in the horizontal direction. A plurality of mounting tables 44 and 45 are provided so as to be detachably fitted in the grooves 43.
The mounting table 44 forms an upper stage, and the mounting table 45 forms a lower stage. A food 46 to be heated is mounted on the mounting table 44, and a food 47 is mounted on the mounting table 45.

FIG. 4 is a perspective view showing a state in which the shelf and the mounting table in the other embodiment of the present invention shown in FIG. 3 are removed from the heating chamber. The mounting tables 44, 4
5 is provided.

FIG. 5 shows another embodiment of the shelf of the high-frequency heating device according to the present invention. The shelf 50 is provided with a plurality of grooves 51 for an upper stage and a plurality of grooves 52 for a lower stage, so that a multi-stage mounting table can be installed, and the height can be delicately selected at each stage. It is composed.

[0029]

As described above, the high-frequency heating apparatus of the present invention has the following effects.

By [0030] (1) heating chamber shelves and table, held food in a state of floating away from the bottom surface of the heating chamber, deer
Also radiates radio waves to food from both the top and bottom surfaces of the heating chamber
At the same time, radio wave agitation means are provided on the upper and lower surfaces.
Is a radio wave in a state where the food is uniformly stirred in a plane.
Food that is widely dispersed and placed on the mounting table because it is irradiated
Can be uniformly heated in a plane .

Further, the resonance state of the radio wave in the heating chamber changes depending on the size and shape of the food, and the heating state of the radio wave changes depending on the height position of the food. In the present invention, the heating method most suitable for each food is used. Since the height at which the state can be obtained can be selected, the heating can be performed more uniformly and in the most efficient state. The high-frequency heating unit has a common structure
And by preparing different shelves for each device,
It is possible to respond flexibly at the cooking site
Cooking performance can be enhanced and convenient
It can be a device.

(2) Since the shelf and the mounting table can be detachably held in the heating chamber only by fitting the grooves and projections, irregularities such as projections are not required on both side surfaces of the heating chamber. As described above, since the left and right side surfaces and the bottom surface of the heating chamber are substantially flat, the object to be heated can be placed on the bottom surface even when the shelf is removed. At this time, it is also less accumulated food debris in the heating chamber wall, and because the surface even when the wall is soiled is flat easily can wipe, hand Re incoming <br/> becomes easy manageable frequency heating The device can be realized.

Further, since the shelves and the mounting table can be freely attached to and detached from the heating chamber, they can be taken out from the heating chamber and washed with water.

(3) Some foods can be sufficiently heated even at the bottom of the heating chamber. In this case, if the shelf or the mounting table is removed, the heating chamber becomes a flat shape and the heating is performed in a clean state. And easier to handle.

(4) Since each of the shelves and the mounting table can be formed in a flat shape, it is not bulky when removed, and can be stored in a small space, so that it is easy to handle and transport.

(5) By installing a plurality of trays such as two trays, food can be placed in multiple stages. Even when such heating is performed, since the radio waves are emitted from above and below the heating chamber, the food placed on each stage can be heated uniformly. Thereby, a large amount of food can be heated at one time.

(6) As shown in FIG. 5, the shelf is provided with a plurality of grooves so that the height can be selected at each stage in addition to the grooves for installing the mounting table in multiple stages.
In each stage, the height position of the mounting table can be selected delicately and freely, so that the food in each stage can be adjusted to the best heating condition, and more efficient heating can be performed. Become.

(7) The shelves and the mounting table itself can be formed by, for example, pressing them into the heating chamber by slightly pressing them into the heating chamber by adjusting the dimensions of the groove of the shelf and the thickness and width of the mounting table. Due to the friction with the wall of the heating chamber, it is securely held in the heating chamber, so that it can be securely fitted without slipping out. Since the shelf and the mounting table are made of an insulating material with a low dielectric constant material, even if the food container is made of a metal body, it is insulated from the wall of the heating chamber, causing sparks etc., which may damage the heating chamber and the container. Can be prevented.

(8) The mounting table can also be used as a tray for carrying food. If the size of the food is small and a large number of foods are to be placed at one time, it is convenient to arrange them on a saucer in advance and put them in and out of the heating chamber in this state.

With such a simple configuration, it is possible to provide a high-frequency heating apparatus which has high heating performance and is easy to use.

[Brief description of the drawings]

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

FIG. 2 is a perspective view of a shelf and a mounting table according to an embodiment of the present invention.

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

FIG. 4 is a perspective view of a shelf and a mounting table according to another embodiment of the present invention.

FIG. 5 is a perspective view of a shelf according to another embodiment of the present invention.

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

FIG. 7 is a cross-sectional view of another conventional high-frequency heating device.

FIG. 8 is a perspective view of a conventional mounting table.

[Explanation of symbols]

 21, 41 Heating chamber 23, 29 Magnetron (high frequency generating means) 34, 42 Shelf 35, 43 Groove 36, 44, 45 Mounting table

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-49192 (JP, A) JP-A-48-63342 (JP, A) JP-A-58-46592 (JP, A) JP-A-57-49592 202097 (JP, A) JP-A-58-32387 (JP, A) JP-A-64-32295 (JP, A) JP-A-64-58932 (JP, A) Japanese Utility Model Laid-Open No. 59-52304 (JP, U) Japanese Utility Model Showa 62-86682 (JP, U) Japanese Utility Model Showa 59-180397 (JP, U) Japanese Utility Model Showa 52-103448 (JP, U) Japanese Utility Model Showa 59-139806 (JP, U) (58) (Int.Cl. ⁶ , DB name) H05B 6/64 F24C 7/02 551 H05B 6/74

Claims (2)

(57) [Claims] 1. A heating chamber having left and right sides and a bottom surface substantially flat, high-frequency generating means coupled to the upper and lower faces of the heating chamber, and radio wave stirring means provided on the upper and lower faces of the heating chamber. A pair of shelves made of a low dielectric constant material detachably provided on both left and right sides of the heating chamber, and the shelves are provided with grooves or projections in a horizontal direction, and fitted into the grooves or projections. As described above, the high-frequency heating apparatus has a configuration in which the object-to-be-heated mounting table made of a low dielectric constant material is detachably provided. 2. A heating chamber having substantially flat left and right side surfaces and a bottom surface, high-frequency generating means coupled to the upper and lower surfaces of the heating chamber, and radio wave stirring means provided on the upper and lower surfaces of the heating chamber. A pair of shelves made of a low dielectric constant material detachably provided on both left and right side surfaces in the heating chamber, and provided with a plurality of grooves or projections in the shelf in the horizontal direction, and fitted into the plurality of grooves or projections. A high-frequency heating apparatus having a configuration in which a plurality of objects to be heated are made of a low-dielectric-constant material so as to be detachably provided.