JPH03714Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention is applicable to cooking utensils such as pots and kettles made of magnetic or non-magnetic materials. The present invention relates to a heating device for an electromagnetic cooker that can heat.

Prior Art In an electromagnetic cooker, countless eddy currents are generated by electromagnetic induction in the bottom plate of a magnetic cookware placed on a top plate, and the heat generated by these eddy currents causes the food to be cooked inside the cookware to It is used to heat. Therefore, the materials that can be used for cooking utensils are essentially limited to those based on iron and stainless steel, and there is an inconvenience that non-magnetic materials based on aluminum and copper, which are often available on the market, cannot be used. .

In addition, the top plate of the electromagnetic cooker can be heated to 250℃.
When the cooking utensil is heated back and forth, the abnormal temperature rise prevention device installed inside the cooker works and not only automatically cuts off the electricity to the induction heating coil, but also keeps the cooking utensil at a certain distance from the top surface of the top plate, for example 12 ~
When the distance is 1.9mm or more (varies depending on the manufacturer), electromagnetic induction cannot be caused in the cookware.

For this reason, induction cooktops are suitable for cooking simmered and fried foods where liquid such as water or oil is contained in the cookware and the temperature rise of the top plate can be kept below 250℃. Other types of cooking that do not satisfy the conditions cannot be continued for a long time, and this, together with the material limitations of the cooking utensils, has been a major factor preventing the spread of electromagnetic cookers.

Purpose This idea was made in view of the above circumstances, and the materials for cooking utensils that can be used in induction cookers include not only magnetic materials but also non-magnetic materials (including metals and non-metals).
To provide a heating device for an electromagnetic cooker, which can expand the range of cooking methods to increase the types of food that can be cooked, and which can move a magnetic heating element up and down to two positions, a height that allows electromagnetic induction and a height that does not allow electromagnetic induction, depending on the weight of the cooking utensil. The purpose is to

Structure of the invention In this invention, the heating element holding member is made of a non-magnetic material and has an opening, a magnetic heating element capable of electromagnetic induction is attached to the opening, and the heating element holding member is provided with a magnetic heating element that can be electromagnetically induced. This heat generating device for an electromagnetic cooker is provided with a swinging leg equipped with a biasing member that moves to two positions: a possible height and an impossible height.

Embodiment FIGS. 1 to 4 show a first embodiment of this invention, in which a magnetic heating element 1 having a convex portion 1a of a circular or other arbitrary shape is a non-magnetic heating element. The flange 1 of the magnetic heating element 1 is inserted through the opening 3 provided in the holding member 2 so that the upper surface of the convex portion 1a slightly protrudes from the heating element holding member 2.
At part b, it is attached to a plurality of attachment seats 5 formed on the back surface of the heating element holding member 2 with screws 5.

Plate-shaped handles 4 are attached to the left and right ends of the heating element holding member 2 with screws 8, but when the handles 4 are poor conductors of heat, the handles 4 are attached by contacting the heating element holding member 2. However, if the handle 4 is made of a metal material, it is better to provide a gap when attaching it.

A mounting member 10 is fixed to the mounting seat 7 on the back side of the handle 4 by sharing the screws 8, and a cooking utensil E is attached to the mounting member 10 on the magnetic heating element 1.
is placed, the top surface of the convex portion 1a of the magnetic heating element 1, which had been held at a height where electromagnetic induction was not possible by the electromagnetic cooker A, is lowered to a height position where electromagnetic induction is possible. A movable leg 9 is pivotally supported. As shown in FIG. 2, for example, the swinging leg 9 has a shaft portion 9a formed by bending both ends of a U-shaped round bar or pipe inward at an angle of 90 degrees. A circular hole 10b of a rectangular bent portion 10a formed at one end of the mounting member 10, respectively.
and the horizontal V-shaped notch 10c (see FIG. 3), and the shaft portion 9
The magnetic heating element 1 is biased via the heating element holding member 2 by a spring 11 attached to the member a in a height direction where electromagnetic induction is not possible. In this case, the mounting member 10
is installed at a position where the V-shaped notch 10c overlaps with the U-shaped bent portion of the swing leg 9, and the spring 11
Further movement is stopped at the position where the U-shaped bent portion of the swinging leg 9, which is biased by the oscillating force, comes into contact with the V-shaped notch 10c (see FIGS. 2 and 3).

In the above embodiment, the mounting member 10 includes the swing leg 9
It also serves as a stopper for stopping the urging of the swing leg 9 by the spring 11, but it goes without saying that a separate stopper may be provided in place of the V-shaped notch 10c. .

The magnetic heating element 1 has a three-layered structure in which thin stainless steel plates with a thickness of about 0.1 mm are bonded to both sides of an iron plate with a thickness of about 1 mm. The applicant has discovered that it exhibits extremely excellent heat generation performance, but it goes without saying that iron plates and other magnetic materials can also be used. Magnetic heating element 1 having each of the above configurations
If the surface of the magnetic heating element 1 is coated with a heat-resistant, non-rusting material such as aluminum plating or enamel, oxidation of the magnetic heating element 1, which is heated to a high temperature by electromagnetic induction, can be prevented and the life of the magnetic heating element 1 can be extended. As the heating element holding member 2, in addition to metal castings such as aluminum die-casting using non-magnetic materials, non-metallic materials that are poor conductors of heat, etc. are used.

Even if the heat generating device configured as described above is placed on top of the electromagnetic cooker A and the switch C is turned on, the magnetic heat generating element 1 is held by the swing legs 9 at a height position where electromagnetic induction is not possible. It is not heated by the electromagnetic cooker A. However, when the cooking utensil E is placed on the magnetic heating element 1, the swinging leg 9 resists the biasing force of the spring 11, and the lower end surface of the heating element holding member 2
Since the magnetic heating element 1 is rotated to a position where it contacts the top plate B of the induction cooker A (see Fig. 4), the magnetic heating element 1, which has been lowered to a height position where electromagnetic induction is possible, reaches a temperature corresponding to the control knob D of the induction cooker A. It is possible to reliably heat the cooking utensil E placed thereon regardless of the type of material.

In this case, the magnetic heating element 1 that heats the cooking utensil E
is opposed to the top plate B of the electromagnetic cooker A through a space, and the heat generating part of the magnetic cooker does not come into direct contact with the top plate as in the past, so the temperature of the top plate B By keeping the rise low, the types of dishes that can be cooked with the electromagnetic cooker A can be increased. After cooking, use cooking utensil E
When you lower the magnetic heating element 1 from above, the magnetic heating element 1
The swinging leg 9 rotated by the biasing force of the spring 11 returns it to the original height where electromagnetic induction is impossible, and the heat generation effect is automatically shut off, thereby increasing safety during handling. be able to.

FIG. 5 shows a second embodiment of this invention, in which a heat insulating material 12 is arranged on the back side of the convex portion 1a of the magnetic heating element 1, and is fixed to the magnetic heating element 1 or the heating element holding member 2. This is a case in which it is held by the protruding piece 13 that is attached. The heat insulating material 12 may be provided not only on the back surface side of the convex portion 1a but also on the lower surface of the heating element holding member 2.

When the heat generating device is configured as described above, even when the heat generating capacity of the magnetic heating element 1 is large, the abnormal temperature rise prevention device automatically controls the temperature at which the top plate B is heated by the radiant heat of the magnetic heating element 1. By keeping the temperature lower than the normal operating temperature of 250℃, you can cook continuously for a long time.

FIG. 6 shows a third embodiment of this invention, in which a magnetic plate 14 of a certain size, for example, about 30 mm or more in diameter, is placed below the central part of the back surface of the magnetic heating element 1. This is a case where the cooker A is located at a height that allows electromagnetic induction. The magnetic plate 14 may be used in combination with the heat insulating material 12 provided on the back side of the magnetic heating element 1, as shown in FIG.

When the heat generating device is configured as described above, even in the electromagnetic cooker A where the height at which electromagnetic induction is possible is small,
Due to the relay action of the magnetic plate attached to the magnetic body, the height at which electromagnetic induction is possible by the electromagnetic cooker is increased, the temperature rise of the top plate B is kept low, and the heating of the cooking utensil by the magnetic heating element 1 is extended. It can be made possible to perform continuously for hours.

Effects of the invention This invention attaches a magnetic heating element capable of electromagnetic induction heating to a non-magnetic heating element holding member, and
Since the heating element holding member is equipped with swing legs that move the magnetic heating element to two positions, one at a height where electromagnetic induction is possible and one at a height where electromagnetic induction is not possible, magnetic The utility value of the electromagnetic cooker can be significantly increased by expanding the field from the field of non-magnetic materials to the field of non-magnetic materials.

Furthermore, since the time during which the magnetic heating element can be continuously heated to a high temperature is significantly longer, the electromagnetic cooker can be used to cook grilled foods in addition to conventional boiled dishes.

Furthermore, the swinging legs provided on the heating element holding member allow the cooking utensil to be lowered from above the magnetic heating element.
Since the heat generation effect on the magnetic heating element by the electromagnetic cooker is automatically shut off, the safety of the heat generating device during handling is improved and heat loss can be reduced.

Furthermore, by attaching a magnetic plate to the lower side of the magnetic heating element, the distance over which electromagnetic induction can be performed by the electromagnetic cooker can be increased.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an embodiment of this invention.
Figure 2 is a partially cutaway back view of Figure 1, Figure 3 is a perspective view showing details of the swing leg attachment part, Figure 4 is a vertical sectional view showing the state when heating the cooking utensil, and Figure 5. FIG. 6 is a vertical sectional view of another embodiment, and FIGS. 6 and 7 are partially sectional front views showing still other different embodiments. 1...Magnetic heating element, 2...Heating element holding member, 3
...opening, 4...handle, 9...swinging leg, 9a...
Shaft portion, 12...Insulating material, 14...Magnetic plate.

Claims (1)

[Claims for Utility Model Registration] (1) The heating element holding member is made of a non-magnetic material and has an opening, a magnetic heating element capable of electromagnetic induction is attached to the opening, and the heating element holding member has a magnetic heating element. A heat generating device for an electromagnetic cooker, characterized in that a swing leg is provided with a biasing member that moves the body to two positions: a height that allows electromagnetic induction and a height that does not allow electromagnetic induction. (2) The electromagnetic cooking according to claim 1 of the utility model registration claim, wherein the swinging leg is formed by bending a round bar or pipe into a U-shape, and a shaft portion for attaching a biasing member is provided at both ends of the swinging leg. Skillful heat generating device. (3) The heating device for an electromagnetic cooker according to claim 1 or 2, wherein the heating element holding member is made of die-cast aluminum. (4) The heating device for an electromagnetic cooker according to claim 1 or 2, wherein the heating element holding member is made of a poor conductor of heat. (5) The heating element holding member is provided with a handle made of a poor heat conductor.Claim No. 1 of the utility model registration claim
The heat generating device for an electromagnetic cooker according to any one of Items to Item 4. (6) The heating device for an electromagnetic cooker according to claim 1 or 5, wherein the magnetic heating element has a three-layer structure in which thin stainless steel plates are laminated on both sides of an iron plate. (7) The magnetic heating element is coated with a heat-resistant and non-rusting material.
A heat generating device for an electromagnetic cooker as described in . (8) The heating device for an electromagnetic cooker according to any one of claims 1, 6, and 7, wherein the magnetic heating element is provided with a heat insulating material on the back side. (9) The magnetic heating element is defined in any one of claims 1, 6 to 8 of the utility model registration claim, in which a magnetic plate of a certain size or more is provided below the central part of the back surface. The heat generating device for an electromagnetic cooker described above.