JPH0124352B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to an electromagnetic induction heating container mounting body used when heating a heated container made of a non-magnetic material by electromagnetic induction heating when boiling food or the like. It is related to.

(Prior Art) As is well known, when cooking, such as boiling food, using an electromagnetic induction heating device that generates magnetic lines of force (a so-called magnetic force generation device), (a) the electromagnetic induction heating device generates A container to be heated made of a magnetic material such as pure iron or iron enamel that can generate heat when exposed to magnetic lines of force.

(b) A heated container made of a non-magnetic material such as aluminum or aluminum alloy with a heating plate made of a magnetic material bonded to the bottom of the container (for example, JP-A-59-184485 filed earlier by the same applicant) (see official bulletin).

etc., it was necessary to use a heated container with magnetism.

(Problems to be Solved by the Invention) However, containers to be heated such as pots and kettles used at home are made of non-magnetic materials that cannot be heated by electromagnetic induction heating, such as aluminum.
Many are made of copper, 18-8 stainless steel, ceramic, glass, etc. Therefore, the problem is that the heated container to be heated is limited to a heated container with magnetism, which is very inconvenient for the user when using the electromagnetic induction heating device.

In addition, a simple method for heating a container to be heated made of a non-magnetic material is to place a heating plate made of a magnetic material on the top plate of an electromagnetic induction heating device, and place the container to be heated on the heating plate. It is predicted that However, according to this method, when the electromagnetic induction heating device is turned on even though no container to be heated is placed on the heating plate, the heating plate generates heat unnecessarily, resulting in This has led to unexpected accidents such as burns, fires, etc., resulting in problems that are undesirable from a safety standpoint.

(Means for Solving the Problems) This invention for solving the problems in the conventional techniques described above includes a heat generating plate made of a magnetic material,
By interposing an elastic means between the heat generating plate and a support member disposed at the outer end of the heat generating plate, the heat generating plate is supported in a floating state by the support member, and the container to be heated is placed on the heat generating plate. The gist is that the heating plate is configured to be lowered against the elastic means.

(Function) When the container mounting body according to the above-mentioned means is placed on the top plate of the electromagnetic induction heating device, the heating plate is supported in a floating state by the support member via the elastic means. When a heat generating plate is placed above the top plate at a distance and a container to be heated is placed on the top plate, the heat generating plate receiving the weight of the heated container is affected by the elasticity of the elastic means. The heating plate is brought into contact with or close to the top plate so that it can generate heat by turning on the induction heating device.

(Example) Next, an example embodying the present invention will be described.

(First Example) First, a first example will be described with reference to FIGS. 1 to 3. In FIG. 1, which is a partially cutaway perspective view of the electromagnetic induction heating container mounting body, and FIG. 2, which is an enlarged cross-sectional view of the same main part, the heating plate 10, which is approximately circular and flat, is made of pure iron. , magnetic stainless steel (magnetized stainless steel using SUS430, etc.), iron enamel, and other magnetic materials. A support piece 11 having an inverted L-shaped cross section is provided in an annular manner on the outer periphery of the heat generating plate 10 . The outer peripheral portion 11a of the support piece 11 is bent downward into a flange shape. On the horizontal portion 11b of the support piece 11, a plurality (for example, six) of annular protrusions 12 protruding downward are formed at approximately equal intervals by press working or the like.

The outer end of the heat generating plate 10 is supported by a support member 13. The support member 13 has a pair of inverted L-shaped handles 15, 15 arranged vertically on the outside of a connecting portion 14c of an annular support ring 14 having a U-shaped cross section and upper and lower flanges 14a, 14b projecting inward. Each mounting piece 15a is fixed with a screw 16. The handles 15, 15 are arranged at opposite positions on the support ring 14. In the embodiment, a heat insulating material 17 made of asbestos, glass fiber, etc. is interposed between the contact surface between the support member 13 and each handle 15. Note that the support ring 14 and the handle 1
5 and 15 include non-magnetic and heat-insulating materials (for example, SUS304, aluminum, ceramic,
It is desirable to use heat-resistant resins such as phenolic resins.

Upper and lower flanges 14a, 14 of the support ring 14
A horizontal portion 11b of the support piece 11 of the heat generating plate 10 is interposed between the portions b. On the lower flange 14b of the support ring 14, annular protrusions 18 opposing the respective protrusions 12 of the heat generating plate 10 are respectively protruded upward by press working or the like.

Between the horizontal part 11b of the support piece 11 of the heat generating plate 10 and the lower flange 14b of the support ring 14,
A plurality of (for example, 6) coil springs 19
are arranged at approximately equal intervals. The upper end of each coil spring 19 is fitted into the protrusion 12 of the heat generating plate 10, and the lower end of each coil spring 19 is fitted into the protrusion 18 of the support ring 14, thereby positioning the coil spring 19. As the heat generating plate 10 is urged upward by the elasticity of the coil spring 19, the support piece 11 of the heat generating plate 10 is brought into contact with the upper flange 14a of the support ring 14, and the heat generating plate 10 is pressed against the support member 13. It is supported in a floating state. In addition, coil spring 19
is preferably made of a non-magnetic and heat-resistant material.

The container mounting body described above is used when heating the container W to be heated made of a non-magnetic material using an electromagnetic induction heating device. That is, the container mounting body is placed on the top plate TP of the electromagnetic induction heating device.

In this state, the heat generating plate 10 is supported in a floating state by the elasticity of the coil spring 19, so the heat generating plate 10 is separated from the top plate TP of the electromagnetic induction heating device (see FIG. 2). Therefore, in this state, that is, the heating plate 1
There is no heated container W on 0 (not placed)
In this state, even if the electromagnetic induction heating device is switched on, the lines of magnetic force generated by the electromagnetic induction heating device do not pass through the heat generating plate 10, so the heat generating plate 10 will not generate heat. Heat generating plate 1 at this time
0 and the top plate TP is, for example, approximately 3 mm or more in use, it is considered that the heating plate 10 does not generate heat due to the magnetic lines of force.

When the container W to be heated is placed on the heat generating plate 10, the heat generating plate 1 receives the weight of the container W.
0 is lowered against the elasticity of the coil spring 19, and the heating plate 10 comes into contact with the top plate TP (see FIG. 3). When the electromagnetic induction heating device is switched on in this state, the lines of magnetic force generated by the device pass through the heat generating plate 10, causing the heat generating plate 10 to generate heat.
The heated container W is heated by the heat generated by the heat generating plate 10. In addition, the heating plate 1 at this time
0 is capable of generating heat even if it is not in contact with the top plate TP, as long as it is close to a position where heat can be generated (for example, a position where the distance between the top plate TP and the heat generating plate 10 is about 2 mm or less). It is.

Further, after heating the container W to be heated, if the container W is taken out from the heat generating plate 10, the heat generating plate 10 is floated upward by the elasticity of the coil spring 19 and returned to its original position (see Fig. 2). ).

Furthermore, even if the heated container W is removed from the heating plate 10 while the electromagnetic induction heating device is switched on, the heating plate 10 is returned to its original position by the elasticity of the coil spring 19. The heat generation of the heat generating plate 10 is stopped. In this way, this container mounting body can function as a kind of switch.

(Second Embodiment) Next, a second embodiment will be described with reference to FIGS. 4 and 5. In FIG. 4, which shows a partially cutaway perspective view of the electromagnetic induction heating container mounting body, and FIG. Like the embodiment, it is made of magnetic material. An annular support piece 21 having an inverted L-shaped cross section is provided on the outer periphery of the heat generating plate 20 . The outer peripheral portion 21a of the support piece 21 is bent downward into a flange shape. Two annular protrusions 22 projecting downward are formed at opposite positions of the horizontal portion 21b of the support piece 21 (attachment positions for a pair of handles 25, 25, which will be described later).

The outer end portion of the heat generating plate 20 is supported by a pair of support members 23, 23 disposed at opposite positions. The support member 23 is constructed by fixing a mounting plate 24 with screws 26 to a horizontal gripping piece 25a at the top of a handle 25 having a substantially Z-shaped cross section. An engagement flange 24a projects downward from the inner end of the mounting plate 24. Note that the support ring 1 of the first embodiment is attached to the mounting plate 24 and the handle 25.
4 and the handle 15, it is desirable to use a non-magnetic and heat-insulating material, respectively. Further, it is also possible to form the support member 23 by integrally molding the mounting plate 24 and the handle 25.

The support piece 21 of the heat generating plate 20 is interposed between the mounting plate 24 and the horizontal support piece 25b at the bottom of the handle 25. Vertical portion 21 of support piece 21
c is in contact with the engaging flange 24a of the mounting plate 24 so as to be slidable in the vertical direction. However,
At both ends of the support piece 25b of the handle 25, annular protrusions 28, which are opposed to the respective protrusions 22 of the heat generating plate 20, protrude upward.

A pair of coil springs 29 are disposed between the horizontal portion 21b of the support piece 21 of the heat generating plate 20 and the support piece 25b of the handle 25. The upper and lower ends of each coil spring 29 are fitted into the protrusion 22 of the heat generating plate 20 and the protrusion 28 of the handle 25, as in the first embodiment. This coil spring 2
As the heat generating plate 20 is urged upward by the elasticity of the heat generating plate 20, the support piece 21 of the heat generating plate 20 comes into contact with the mounting plate 24, and the heat generating plate 20 is supported by the support member 23 in a floating state. There is. Note that the coil spring 29 is desirably made of a non-magnetic and heat-resistant material as in the first embodiment.

The container mounting body of the second embodiment described above is similar to the first embodiment described above.
Since it has the same effect as the embodiment, the explanation thereof will be omitted.

Further, in each of the embodiments described above, the coil spring 19 or 29 is used as the elastic means, but it is also possible to use a strip-like plate spring 39 as shown in FIGS. 6 and 7. That is, the central part of the leaf spring 39 is fixed to the upper side of the outer end of the flat heat generating plate 30 by the screw V1, and the horizontal part of the support member 33, which is approximately T-shaped and also serves as a handle, is attached to the mounting piece. The leaf spring 39 is attached to 33a.
Both ends of the heat generating plate 30 are fixed by screws V2, V2, and the heat generating plate 30 is supported in a floating state.

Note that the leaf spring 39 is formed with elongated mounting holes 39a, 39a through which screws V2, V2 are inserted.
When the heating plate 30 moves up and down, both ends of the leaf spring 39 can slide.

It is also possible to use a plate spring 49 formed in the form of a strip and approximately U-shaped, as shown in FIG. In other words, the horizontal portion 4 of the substantially inverted L-shaped support piece 41 formed at the outer end of the heat generating plate 40
1b, both ends of the leaf spring 49 are fixed with screws V2 as in the case of the leaf spring 39 described above, and are attached to attachment parts 43a on the inner side of the support member 43, which has a substantially inverted L shape and also serves as a handle. Said leaf spring 49
The central part of the heating plate 40 is fixed with a screw V1.
is supported in a floating state. Note that the leaf spring 49 has a mounting hole 4 through which the screw V2 is inserted in the same manner as described above.
9a is formed in the shape of a long hole.

Furthermore, wire springs may be used instead of the leaf springs 39, 49.

Further, the upper surface of the heat generating plates 10, 20, 30, 40, which is the surface in contact with the container W to be heated, may be coated with a heat-resistant paint such as polyimide, polyether sulfon, or silicone by baking. Note that it is preferable that the color of the heat-resistant paint be a dark color such as black.

In addition to the magnetic materials described above, the heating plates 10, 20, 30, and 40 are also made of (a) magnetic ceramic, and (b) a composite plate made of a magnetic stainless steel plate superposed on the underside of a non-magnetic plate such as an aluminum plate. , (c) a magnetic material sprayed on the bottom of a non-magnetic plate, and (d) a magnetic mixed material sprayed on the bottom of a non-magnetic plate. .

Furthermore, if a descending device is attached that can lower the heat generating plates 10, 20, 30, and 40 against elastic means, and the heat generating plate 10 can be held in the lowered state regardless of the presence or absence of the container W to be heated, This is convenient depending on the type of cooking.

(Effects of the Invention) That is, the gist of the present invention is the configuration described in the column of "Means for Solving the Problems" mentioned above, and when placed on the top plate of an electromagnetic induction heating device, the heating plate is supported by the supporting member in a floating state via elastic means, so that when a heating plate is positioned above the top plate at a distance, and a container to be heated is placed on the heating plate, The heating plate is brought into contact with or close to the top plate so that the heating plate bearing the weight of the container to be heated is lowered against the elasticity of the elastic means and generates heat by turning on the induction heating device. Therefore, even containers made of non-magnetic materials that could not be heated by electromagnetic induction heating in the past can be heated by electromagnetic induction heating in the same way as magnetic containers. There is an effect that it can be done. As a result, it becomes possible to heat almost all containers to be heated such as pots and kettles used at home by electromagnetic induction heating, and as a result, it is very convenient to use the electromagnetic induction heating device.

In addition, when the container to be heated is not placed on the heat generating plate, the heat generating plate is supported in a floating state by the support member via the elastic means, so that the heat generating plate is placed above the top plate. Since they are located apart from each other, even if the electromagnetic induction heating device is switched on, the heating plate will not generate heat unnecessarily. This has the effect of preventing unexpected accidents such as burns and fires caused by heat generation and ensuring safety.

Further, in the present invention, the elastic means is provided between the supported part formed at the outer end of the heat generating plate and the support part provided on the support member so as to be located below or above the supported part of the heat generating plate. , because it is arranged so that it can be elastically deformed in the vertical direction, the elastic means can be compactly incorporated between the heating plate and the support member, and after securing a predetermined container mounting surface of the container mounting body. , a unique effect can be obtained in that the container mounting body can be made as small as possible.

In addition, to explain the above effect in detail, for example, as seen in Japanese Patent Application Laid-open No. 105913/1983, in which a torsionally deformable coil spring is used to levitate the heat generating plate, the coil spring is The problem is that the container mounting body is forced to be larger because the support member is also considerably larger than the outer shape of the heat generating plate. However, the present invention avoids such problems.

[Brief explanation of drawings]

The drawings show one embodiment of the invention.
The figure is a partially cutaway perspective view of the container mounting body of the first embodiment, FIG. 2 is an enlarged sectional view of the same essential part, FIG. 3 is an enlarged sectional view of the same essential part during heating, and FIG. 4 is the second embodiment. FIG. 5 is an enlarged cross-sectional view of the main part of the container mounting body.
FIG. 6 is a sectional view of the main part showing another example of the elastic means, and FIG.
The figure is a sectional view taken along the line -- in FIG. 6, and FIG. 8 is a sectional view of a main part showing another example of the elastic means. 10...Heating plate, 13...Supporting member, 19...
Coil spring (elastic means), 20... heat generating plate,
23...Supporting member, 29...Coil spring (elastic means), 30...Heating plate, 33...Supporting member, 39...Plate spring (elastic means), 40...Heating plate, 43...Supporting member, 49...Plate spring (elastic means).

Claims (1)

[Claims] 1. An elastic means is interposed between a heat generating plate made of a magnetic material and a supporting member disposed at the outer end of the heat generating plate, so that the supporting member supports the heat generating plate in a floating state, and The heating plate is configured to be lowered against the elastic means by placing the container to be heated, and further, the elastic means includes a supported portion formed at an outer end of the heating plate; The electromagnetic induction heating container mount is arranged between the support member and a support part provided below or above the supported part of the heating plate so as to be elastically deformable in the vertical direction. Placement.