JP2003133046A - High-frequency heating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate storage and portability by reducing the outer volume when not in use as compared with that in use. SOLUTION: This high-frequency heating device has two vessels, an outer vessel 1 and an inner vessel 4 in a nesting relation allowing insertion and extraction. A high-frequency wave generation source such as a magnetron 10 or the like is housed in the inner vessel 4, both the inner and outer vessels are detachably connected with their openings fitted to each other, and a high-frequency wave leakage prevention mechanism composed of a choke 5 and a choke facing plate 2a installed in the vicinity of the openings and a switch function comprising a bipole magnet 2b and a hall element 9 are installed, so that the heating device can safely be used in use, the inner vessel 4 can be housed in the outer vessel 1 in a nested form by separating it when not in use, and thus the total volume is reduced.

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 having a volume when not in use reduced from a volume when in use.

[0002]

2. Description of the Related Art Conventionally, as a high frequency heating apparatus having a structure relatively similar to that of the present invention, for example, there is one described in Japanese Patent Publication No. 5-62532. This includes a main body having a built-in high-frequency generator, and a detachable lid provided at the upper part of the main body to form a cooking chamber for taking in and out cooked foods and for confining high frequencies.

[0003]

However, in the conventional example, it is possible to separately store the lid and the main body, but if the total volume of both is increased, it may increase from the volume in use, and it cannot be reduced. could not.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to reduce the volume when not in use to the volume when in use so that the volume can be easily accommodated and accompanying it can be easily carried.

[0005]

In order to solve the above-mentioned conventional problems, the high-frequency heating apparatus of the present invention comprises two containers, an outer container and an inner container, which are in a nestable relationship that can be inserted and removed freely, and a high-frequency generation source. It has a structure in which a high-frequency generation source is housed inside the inner container, and both the inner and outer containers are detachably coupled with their openings abutting each other.

[0006] With this, the space formed between the two containers when the openings are joined together in a butted manner is used as a heating chamber, and when not in use, the inner and outer containers are separated and the inner container is placed inside the outer container. By nesting to store
The total volume when not in use is smaller than when in use.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 has an outer container and an inner container which can be freely inserted and removed in a nesting relationship, and a high-frequency source, and the high-frequency source is housed inside the inner container.
Nested state in which the space formed between both inner and outer containers is used as a heating chamber by abutting the openings of both containers as a heating chamber, and when not in use both inner and outer containers are separated and the inner container is housed inside the outer container By doing so, the total volume when not in use is smaller than when in use, and as a result, storage becomes easier.

The invention as defined in claim 2 is particularly defined by claim 1.
In the high-frequency heating device described in, the left and right sides of the inner container placed facing upward, at least two places are bent structure, by providing a handle having a portion thinner than the gap between the inner and outer containers in a nested state, When both containers are stored in a nested state, the handles come out from the gap between the two containers, so it is possible to take out the inner container by holding the left and right handles. Further, by providing the folding structure, it is possible to fold the handle at the time of storage, and it is possible to prevent an increase in storage volume and at the same time prevent injuries due to the protruding handle.

[0009]

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

(Embodiment 1) FIG. 1 is a side view of a high-frequency heating apparatus according to an embodiment of the present invention, showing a state in which the inner and outer containers are nested and the inner container is slightly lifted. . FIG. 2 is a cross-sectional view of a main part of the high-frequency heating device according to the embodiment of the present invention as viewed from the front side and illustrates a nested state during storage. An embodiment will be described with reference to these two figures.

The outer container 1 is composed of an opening portion 2 and a housing portion 3. The opening portion 2 is a relatively thick metal choke facing plate 2a and a two-pole ferrite magnet 2b embedded in a part thereof.
The choke facing plate 2a is provided with two notches 2c at its end. A portion of the choke facing plate 2a adjacent to the housing portion 3 is bent inward to form a bent portion 2d. The housing portion 3 is composed of an outer wall 3a made of a relatively thick transparent resin, a wire mesh 3b provided in the middle and having an end welded to the bent portion 2d, and an inner wall 3c made of a thin transparent resin on the inner side. .

The inner container 4 comprises a choke 5 near the opening and a metal machine room 6 provided below the choke 5. The outer shape and size of the choke 5 are set to values slightly smaller than the inner shape and size of the choke facing plate 2a, and the outer shape and size of the machine room 6 are set to values slightly smaller than the inner shape and size of the inner wall 3c. That is, the inner container 4 and the outer container 1 have a dimensional relationship that allows nesting. The lower end of the choke 5 and the upper end of the machine room 6 both protrude outward, and both form a protrusion 7.
A sheet metal handle 8 is fixed to the protruding portion 7. The handle 8 is divided into three parts by hinges 8a and 8b provided at two places. A grip portion 8c, an intermediate portion 8d, and a fixed portion 8e. The fixed portion 8e is fixed to the projecting portion 7. Two notches 2c of the choke facing plate 2a coincide with the position of the hinge 8a. Two Hall elements 9 are provided inside the sheet metal at the center of the side surface of the protrusion 7. At least this portion of the sheet metal is made of a material that is not attracted to the magnet, for example, 18-8 stainless steel.

In the machine room 6 below the inner container 4, a magnetron 10 as a high frequency oscillation source, a waveguide 11 for guiding high frequencies, a rotating antenna 12 coupled to the waveguide 11, and a stirrer motor 13 for rotating the same. Further, an inverter circuit 14 for supplying a high voltage to the magnetron 10 and the like are housed, and the rotating antenna 12 has a truncated cone shape provided at the center of a heating chamber bottom plate 15 connected to the slit choke 5. It is housed in the concave portion 16 and is covered with a heated object placing table 17 made of crystallized glass from above.

FIG. 3 is a cross-sectional view of the main part of the high-frequency heating apparatus according to the embodiment of the present invention as seen from the front side and illustrates the state in use. Although the inner dimension of the choke facing plate 2a is set larger than the outer dimension of the choke 5 as described above, the upper end is bent inward, and the lower surface of the bent portion 2d abuts the upper surface of the choke 5. At this time, the wire net 3b and the heating chamber bottom plate 15 form a heating chamber 18, and the choke facing plate 2a of the opening 2 which is the lower end of the outer container 1 and the choke 5 which is the upper end of the inner container are close to each other. To face each other. Further, the lower end of the choke facing plate 2a faces the protruding portion 7, and the two-pole magnet 2b
Closely faces the Hall element 9. The handle 8 is a hinge 8a,
With the rotation of 8b, it hangs down with the grip portion 8c down,
It occupies a position apart from the choke 5 and the choke facing plate 2a.

FIG. 4 is a detailed view of part A of FIG. The handle 8 is made of stainless steel with a thickness of about 0.8 mm and has a hinge 8
The outer dimensions of the portions a and 8b are about 3.8 mm in diameter. Therefore, a part of the projecting portion 7 is cut out, the fixing portion 8e and the hinge 8b of the handle 8 are inserted, and the fixing portion 8e is fixed to the projecting portion 7 by welding or the like. The hinge 8a fits into the notch 2c provided in the choke facing plate 2a and occupies a position lower than the slit plate 5a of the choke 5. An intermediate portion 8d connecting the two hinges 8a and 8b enters into a gap between the inner and outer containers, about 1 mm. The grip portion 8c is rotatable about the hinge 8a as shown by a chain double-dashed line.

FIG. 5 is a detailed view of part B of FIG. The choke 5 consists of two parts, the outer side is made of sheet metal with a thickness of about 2 mm, the slit plate 5a with periodic notches (slits) as shown in FIG. 1, and the inner side is almost the lower machine room 6 The choke inner plate 5b has the same size. High frequency leakage from the heating chamber 18 formed by the wire netting 3b and the heating chamber bottom plate 15 by the choke facing plate 2a and the bent portion 2d including the protruding portion 7 located at the lower end of the choke inner surface plate 5b. Designed to the proper size to prevent. A pair of the Hall element 9 that reacts to the N pole and the one that reacts to the S pole are attached to the printed circuit board 9a.
b, but the north pole of the two-pole magnet faces the one that reacts with the north pole of the hall element 9, and the south pole of the magnet is the south pole of the hall element 9.
Opposite to those that react to the poles (not shown in the figure).
Although the handle 8 hangs down by its own weight, it is also rotated to the position shown by the chain double-dashed line by the rotation of the hinge 8b.

The operation and action of the high-frequency heating device configured as described above will be described below. As shown in FIG. 3, the heating chamber 18 is formed by stacking the heavy inner container downward with the choke facing plate 2a and the choke 5 which are openings of the outer container 1 and the inner container 4 butted against each other. As described above, the heating chamber 1 includes the choke 5 and the choke facing plate 2a.
High frequency leakage from 8 is prevented. Inverter circuit 1
The high voltage generated at 4 is applied to the magnetron 10 to generate a high frequency, which is supplied to the rotating antenna 12 via the waveguide 11 and radiated into the heating chamber 18. Further, in this state, since the two-pole magnet 2b faces the hall element 9, the hall element 9 is used as a switch in the inverter circuit 14.
A 0V power supply can be connected. That is, it operates as a high frequency heating device in the state of FIG. At this time, the entire handle 8 hangs downward from the protruding portion 7 and is away from the high frequency portion, and does not affect the high frequency leakage prevention function of the choke 5.

FIG. 2 shows a state in which the outer container 1 is placed with its opening facing upward and the entire inner container 4 is housed. The bent portion 2d of the choke facing plate 2a of the outer container 1 contacts the lower surface of the projecting portion 7 of the inner container 4, and the upper ends of both the inner and outer containers substantially coincide with each other. Machine room 6
The heavy inner container 4 including can be lifted by a pair of handles 8 attached to the left and right sides, and the handle 8 is bent by the hinge 8a, and the grip portion 8c hangs down to the outside of the outer container 1 and the upper hinge 8a is Chalk facing plate 2
Since it corresponds to the notch 2c provided in a, the handle 8
Does not get in the way at all in this state.

As described above, according to the present embodiment, the hinge 8a having a structure in which the inner and outer containers having a nestable dimensional relationship and having a thin thickness that fits in the space between them and a bendable structure is used.
By fixing the handle 8 having the and to the inner container 4, the capacity of the outer container 1 becomes only at the time of storage in a nested state,
Moreover, the inner container 4 can be easily taken out by the handle 8, and when both containers are joined together by abutting the openings of each other, the heating chamber 18 is formed by the inner surface of the outer container 1 and the upper surface of the inner container 4, and the joined portion is formed. The choke 5 and the choke facing plate 2a
And a switching function composed of the two-pole magnet 2b and the hall element 9 are formed. Moreover, the waveguide 11 and the magnetron 10 are provided in the inner container 4.
Since the high-frequency generation source coupled to the heating chamber 18 is housed, it functions as a high-frequency heating device.

The handle 8 is not necessarily limited to metal, and if it is made of, for example, a woven fabric, a bent structure is inevitably formed without a hinge and the fear of external damage is eliminated.

[0021]

As described above, according to the present invention, it is possible to realize a high-frequency heating device in which the required heating chamber volume can be obtained when in use, the outer volume is reduced when not in use, and the inner container can be easily taken out. .

[Brief description of drawings]

FIG. 1 is a side view of a high frequency heating apparatus according to an embodiment of the present invention.

FIG. 2 is a sectional view of the high-frequency heating device according to the embodiment of the present invention when not in use, as viewed from the front.

FIG. 3 is a cross-sectional view of the high-frequency heating device as viewed from the front when the embodiment of the present invention is used.

FIG. 4 is a detailed view of part A of the high-frequency heating device when the embodiment of the present invention is not used.

FIG. 5 is a detailed view of a portion B of the high frequency heating device when the embodiment of the present invention is used.

[Explanation of symbols]

1 outer container 2a Choke facing plate (opening of outer container) 4 inner container 5 Chalk (opening of inner container) 10 Magnetron (high frequency source)

Claims (2)

[Claims] 1. An outer container and an inner container, which can be inserted and removed freely in a nested relationship, and a high-frequency generation source, the high-frequency generation source is housed inside the inner container, and the inner and outer containers have their openings butted against each other. High frequency heating device. 2. The left and right side surfaces of the inner container placed upward,
The high-frequency heating device according to claim 1, wherein at least two portions have a bent structure, and a handle having a portion thinner than a gap between the inner and outer containers in a nested state is provided.