JP2008228868A - Electromagnetic cooking container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electromagnetic cooking container which prevents the distal end of a chopstick or the like from entering and getting hooked between the outer peripheral surface of a pressing plate and the inner surface of a pot body facing it. <P>SOLUTION: In the electromagnetic cooking container 1 composed by mounting a porous heating plate 3 in a thin plate shape on the bottom surface of the pot body 2 and mounting a planar porous pressing plate 4 on the upper surface of the heating plate, a recessed part 5 for housing the heating plate and the pressing plate is provided on the bottom surface of the pot body, the opposing interval of the side face of the recessed part and the outer peripheral surface of the pressing plate is set to 0.5 to 3.0 mm, and holes whose diameter is about 3.0 mm are disposed on the entire surface of the heating plate with the array interval of about 13 mm. The depth of the recessed part is nearly equal to the thickness obtained by adding the thickness of the heating plate to the thickness of the pressing plate, the heating plate and the pressing plate are housed in the recessed part, and the upper surface of the pressing plate and the bottom surface of the pot body are set to be in close contact with each other. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electromagnetic cooking container. More specifically, the present invention relates to an electromagnetic cooking container used for cooking using electromagnetic induction heating.

The introduction of electromagnetic cookers has been promoted due to the need for safety associated with the widespread use of all electrification and the increase in the homes of the elderly.
Various types of cooking containers used for electromagnetic cooking have been developed. One of them is a type in which a heating plate is placed on the bottom surface of the pan body. In this type, convection due to boiling during cooking and bubbles generated from the bottom of the pan body cause the heating plate to swing up and down repeatedly and generate noise.
Patent Documents 1 and 2 employ a structure in which the heating plate and the pan body are locked in order to prevent noise during electromagnetic cooking. However, the manufacturing cost increases, and heating is performed during cooking. The troublesome operation of locking the plate to the pan body or releasing the lock after cooking is required.

For these reasons, the inventors of the present invention have proposed, as Patent Document 3, an electromagnetic cooking container that has a simple structure, is inexpensive to manufacture, and is easy to prepare for cooking.
JP 2003-250698 A JP-A-2005-279241 Utility Model Registration No. 3123716

In the electromagnetic cooking container of Patent Document 3, a thin heating plate is generally placed on the flat bottom surface of the pan body, and the outer surface of the heating plate is substantially the same as the heating plate. A plate-shaped porous ceramic pressing plate is placed. In this electromagnetic cooking container, the tip of a tool such as chopsticks, spoon, lotus root, or ladle is caught on the press plate between the outer peripheral surface of the press plate and the inner peripheral surface of the pan body facing it. There is a difficulty that it is difficult.
The present invention was devised as a result of diligent research in view of the above situation, and in an electromagnetic cooking container provided with a heating plate and its pressing plate in the pan body, the outer peripheral surface of the pressing plate and the opposite surface thereof The main object is to provide an electromagnetic cooking container in which the tip of chopsticks or the like does not get caught between the inner surface of the main body of the pan.

  In order to solve the above-described problems, the present invention is configured such that a thin and porous heating plate formed of a conductive material is placed on the bottom surface of a pan body formed of a non-conductive material, In an electromagnetic cooking container in which a plate-like porous presser plate formed of a non-conductive material is placed on the upper surface of the plate, the facing distance between the inner surface of the pan body and the outer peripheral surface of the presser plate is 0. It is set to 5-3.0 mm, It is characterized by the above-mentioned.

And the recessed part which accommodates the said plate for a heating and the said press plate is provided in the bottom face of the said pan main body, and the opposing space | interval of the side surface of this recessed part and the outer peripheral surface of a press plate is set to 0.5-3.0 mm. It is preferable that
The depth of the recess is substantially equivalent to the thickness of the heating plate plus the thickness of the pressing plate. The heating plate and the pressing plate are accommodated in the recess, and the upper surface of the pressing plate And the bottom surface of the pan body are preferably set so as to be substantially flush with each other.
Moreover, it is preferable that holes having a diameter of approximately 3.0 mm are disposed on the entire surface of the heating plate with an arrangement interval of approximately 13 mm.

Since the present invention is configured as described above, the following effects can be obtained.
That is, since the facing distance between the inner surface of the pan body and the outer peripheral surface of the press plate is set to 0.5 to 3.0 mm, even if the inner surface of the pan main body and the outer peripheral surface of the press plate are separated as much as possible, 1 It is only 0.0 to 6.0 mm, and the tip of chopsticks or the like does not get caught between the outer peripheral surface of the press plate and the inner surface of the pan body facing the press plate, and cooking and the like are facilitated. In addition, the heating plate is pressed by the holding plate, and the heating plate is shaken up and down by convection generated in the cooking liquid such as boiled juice due to heat generated by the eddy current generated in the heating plate and bubbles generated from the bottom of the pan body when boiling. The force to move and move left and right is suppressed, and the generation of noise is prevented. As the bubbles generated from the bottom of the pan body rise through the hole of the heating plate and the hole of the holding plate, even if the convection of the cooking liquid such as boiled juice is promoted, the cooking object such as ingredients, It does not wrap around under the pressing plate or under the heating plate from the facing distance between the inner surface of the pan body and the outer peripheral surface of the pressing plate. In addition, it can not be said that the food to be cooked in the form of fine particles does not wrap around under the press plate or under the heating plate from the facing distance between the inner surface of the pan body and the outer peripheral surface of the press plate. It is excluded from the holes of the heating plate and the holes of the holding plate together with the convection of bubbles and the liquid to be cooked, and will not be pinched or clogged.

  When holes with a diameter of about 3.0 mm are arranged on the entire surface of the heating plate with an arrangement interval of about 13 mm, when the broth etc. boils due to the heat generated by the eddy current generated in the heating plate, The air bubbles generated from the bottom of the plate are passed through the holes of the heating plate in a uniformly dispersed state, and the heating plate and the holding plate can be controlled to swing and move left and right very well. And noise prevention can be significantly improved.

Hereinafter, the best mode of the present invention will be described in more detail with reference to the drawings. Of course, the present invention is not limited to the following embodiments.
1 is an exploded perspective view showing an embodiment of an electromagnetic cooking container according to the present invention, FIG. 2 (a) is a plan view, and FIG. 1 (b) is a sectional view.
An electromagnetic cooking container 1 shown in FIG. 1 and FIG. 2 schematically includes a ceramic pot body 2, a heating plate 3, and a ceramic pressing plate 4 placed on the upper surface of the heating plate 3. The heating plate 3 and the pressing plate 4 are accommodated in a circular recess 5 formed on the bottom surface of the pan body 2.
The depth of the recess 5 in the pan body 2 is substantially equivalent to the sum of the thickness of the heating plate 3 and the thickness of the holding plate 4, and the heating plate 3 and the holding plate 4 are in the recess 5 of the pan body 2. The upper surface of the pressing plate 4 is set so as to be substantially flush with the bottom surface of the pan body 2.

  A heel part 6 directed inward is formed below the tub from the opening of the pan body 2, and the lid 7 is supported by the heel part 6. The annular part above the collar part 6 functions to prevent spilling. The lid 7 is provided with a vapor vent hole 7a. The lid 7 is not necessarily required depending on cooking contents. The pan body 2 is provided with a handle 9.

  The heating plate 3 is a circular thin plate-like body formed of a conductive material such as iron or stainless steel, and holes 3a having a diameter of about 3.0 mm are uniformly drilled with an arrangement interval of about 13 mm over the entire surface. . The thickness of the heating plate 3 varies depending on the type of material used, but from the viewpoint of heat generation efficiency due to eddy current generated in the heating plate 3 by the magnetic field lines from the induction coil of the electromagnetic cooker, In such a case, the thickness is preferably 0.6 mm or less. As shown in FIG. 1, three types of heating plates 3 having different diameters are prepared, and can be appropriately selected according to the effective size of the induction coil of the electromagnetic cooker. Of course, if heat generation efficiency is not taken into consideration, it is needless to say that only one type of heating plate 3 may be used without appropriately selecting the heating plate according to the effective size of the induction coil. Here, the diameter of the heating plate 3 having the maximum size is set to be substantially the same as that of the pressing plate 4.

The pressing plate 4 is a circular plate-like body, and a large number of holes 4a penetrating vertically are provided over the entire surface. The diameter of the hole 4a of the pressing plate 4 is set to about 4 to 6 mm so that chopsticks and the like are difficult to enter.
As shown in FIG. 2 (b), the diameter of the press plate 4 is such that chopsticks or the like are placed between the side surface of the recess 5 and the outer peripheral surface 4 b of the press plate 4 when placed in the recess 5 of the pan body 2. It is set so that 0.5 to 3.0 mm can be secured as the facing interval (δ) that is difficult to enter, and the difference between the diameter of the concave portion 5 of the pan body 2 and the diameter of the pressing plate 4 is 2δ. Accordingly, the maximum facing distance between the side surface of the recess 5 of the pan body 2 and the outer peripheral surface 4b of the pressing plate 4 is 2δ. In FIG. 2B and the like, the peripheral edge of the presser plate 4 and the peripheral edge of the hole 4a are squared at right angles, but actually it is preferable that a small radius is attached. Since this is the same for the other types of presser plates described below, the description of the other modes will be omitted one by one. Of course, as shown in FIG. 2B or the like, it is not unusable even if it is angular.

  The holding plate 4 presses the heating plate 3 by its weight, and during cooking, convection generated in the liquid to be cooked such as boiled juice due to heat generated by the eddy current generated in the heating plate, and bubbles generated from the bottom of the pan body at the time of boiling Suppresses the vertical swinging and horizontal movement of the heating plate due to, and prevents the generation of noise. For this reason, the thickness of the pressing plate 4 is preferably about 2.5 to 10.0 mm, and more preferably 2.5 to 5.5 mm in the case of ceramic. In addition, as the bubbles generated from the bottom of the pan body rise through the holes in the heating plate and the holding plate, the uncooked cooking liquid such as boiled juice is encouraged, so that solid cooking such as utensils etc. An object is prevented from being caught and caught under the pressing plate or the heating plate from the facing distance between the side surface of the concave portion 5 of the pan body and the outer peripheral surface 4b of the pressing plate 5.

  The thickness of the pot bottom in the recess 5 of the pot body 2 depends on the size of the pot body 2, the material used, etc., but if the recess 5 is a heat-resistant earthenware pot mainly made of lithium feldspar, It is preferable to set it as 0-6.0 mm.

  In order to use the electromagnetic cooking container 1, the heating plate 3 is selected according to the size of the induction coil of the electromagnetic cooking device or the type of cooking, and placed in the recess 5 of the pan body 2. Next, the pressing plate 4 is obliquely inserted into the recess 5 of the pan body 2 from one side, the other side is slowly lowered, the finger is released, and the plate is placed on the heating plate 3 that has been previously placed. Since the heating plate 3 is placed in the concave portion 5 of the pan body 2, even if the pressing plate 4 is placed on the heating plate 3 in this manner, the outer peripheral lower end edge of the pressing plate 4 is the concave portion 5. There is almost no risk of collision, and even if there is a collision, the impact is mitigated by the presence of the heating plate 3 and is not chipped or damaged.

  Next, water to be cooked, soup stock, seasoning and ingredients such as solid food to be cooked are placed in the pan body 2 and, if necessary, after the lid 7 is placed on the plate of the electromagnetic cooker and placed on the heating coil. Magnetic field lines are generated by passing an electric current. An eddy current is generated in the heating plate 3 due to the magnetic lines of force and heat is generated, and the object to be cooked is cooked.

  In the electromagnetic cooking container 1, even when chopsticks or the like are used during cooking, the facing distance between the side surface 5a of the recess 5 of the pan body 2 and the outer peripheral surface 4b of the pressing plate 4 is set to 0.5 to 3.0 mm. Therefore, the side surface 5a of the recess 5 of the pan body 2 and the outer peripheral surface 4b of the pressing plate 4 are only 1.0 to 6.0 mm at most, and are opposed to the outer peripheral surface 4b of the pressing plate 4. The tip of a chopstick or the like does not get caught between the side surface 5a of the concave portion 5 of the pan body 2 to be cooked, and cooking is facilitated. In addition, the tip of chopsticks or the like does not get caught in the hole 4a of the holding plate 4 so that cooking or the like is not hindered. The heating plate 3 is pressed by the holding plate 4, and the heating plate 3 is caused by convection generated in the cooking liquid such as boiled juice due to heat generated by the eddy current generated in the heating plate 3 and bubbles generated from the bottom of the pan body 2 at the time of boiling. Therefore, the force of moving up and down and moving left and right is suppressed, and the generation of noise is prevented. Moreover, even if the bubble generated from the bottom of the pan body 2 rises through the hole of the heating plate 3 and the hole of the holding plate 4 and the convection of the liquid to be cooked such as the broth is promoted, the ingredients etc. The to-be-cooked object wraps around under the pressing plate 4 or under the heating plate 3 from the facing distance between the side surface 5a of the concave portion 5 of the pan body 2 and the outer peripheral surface 4b of the pressing plate 4. There is no. In addition, the to-be-cooked object which became a fine particle shape wraps around under the press plate 4 or under the heating plate 3 from the opposing space | interval of the side surface 5a of the recessed part 5 of the pan body 2, and the outer peripheral surface 4b of the press plate 4. It cannot be said that there is nothing, but it is excluded from the holes 3a of the heating plate 3 and the holes 4a of the holding plate 4 together with convection of bubbles and the liquid to be cooked, and is not pinched or clogged.

For example, the electromagnetic cooking container 1 may be washed as follows.
If the pan body 2 is tilted and the presser plate 4 is about to fall down, it can be received by hand and taken out from the recess 5 of the pan body 2. At that time, the heating plate 3 may be received and taken out by hand at the same time. Thereafter, the pan body 2, the pressing plate 4, and the heating plate 3 may be washed. In addition, a locking tool (not shown) provided with a locking claw with one hand is placed between the facing distance between the side surface 5a of the recess 5 of the pan body 2 and the outer peripheral surface 4b of the pressing plate 4 to lock. It goes without saying that the holding plate 4 may be locked with the nail, the holding member may be pulled up, the holding plate 4 may be inclined, grasped with the other hand, and the holding plate 4 taken out from the recess 5 of the pan body 2. Nor.

FIG. 3 is a front view showing another example of the pressing plate.
The holding plate 12 shown in FIG. 3 is provided with an annular tapered surface 12a along the periphery of the lower surface.
FIG. 4 shows a state in which the presser plate 12 is pressed with a finger from above at the position of the tapered surface 12 a and is raised obliquely and taken out from the recess 5 of the pan body 2. Thus, the presser plate 12 can be easily taken out by providing the tapered surface 12a at the periphery.
In order to put the pressing plate 12 into the concave portion 5 of the pan body 2, an operation reverse to the removal may be performed.
The inclination angle and width of the taper surface 12a may be appropriately determined based on the diameter, thickness, and the like of the presser plate 12, but in the case of this presser plate 12, the opposing distance between the recess of the pan body and the presser plate 12 is 1 The thickness is usually set to about 2.5 to 5.5 mm.
The rest is the same as that of the press plate 4 shown in FIG. 1, and the cooking operation using the press plate 12 is the same as that using the electromagnetic cooking container 1 shown in FIG. Omitted.

FIG. 5 shows still another example of the pressing plate, where (a) is a plan view and (b) is a cross-sectional view.
The pressing plate 13 shown in FIG. 5 is formed with a finger notch 13a on the outer periphery. The notch 13a has a gradual shape, and the depth of the notch is small, and there is little risk of adversely affecting the operation of chopsticks or the like.
A finger is put on the notch 13a of the presser plate 13, and the presser plate 13 is placed on the heating plate 3 placed in the recess 5 of the pan body 2, or after cooking, the notch 13a of the presser plate 13 is placed. It is only necessary to take out the pressing plate 13 from the concave portion 5 of the pan body 2 by placing a finger on the finger.
The rest is the same as that of the press plate 4 shown in FIG. 1, and the cooking operation using the press plate 13 is the same as that using the electromagnetic cooking container 1 shown in FIG. Omitted.

FIG. 6 shows still another example of the pressing plate, where (a) is a plan view and (b) is a cross-sectional view.
The presser plate 14 shown in FIG. 6 is formed by forming an annular convex portion 14a, 14b having a gentle cross section on the upper surface in the vicinity of the outer peripheral edge and on the inner side of the collar in a double ring shape. The annular convex portions 14a and 14b are non-glazed portions. This presser plate 14 is placed on the firing furnace tool 15 with the presser plate before firing applied with glaze except for the annular convex parts 14a and 14b, with the annular convex parts 14a and 14b facing downward as shown in FIG. It can be obtained by firing. This presser plate 14 melts and flows during firing, and does not fuse to the firing kiln 15, and does not require skill for glazing or firing. In addition, the pressing plate 14 shown in FIG. 6 is formed with a notch 14c for hooking the finger as in the pressing plate 13 shown in FIG.
Even if the annular projections 14a and 14b of the pressing plate 14 are present, the chopsticks and the like are not caught, and cooking or the like is not hindered.
Others are the same as those of the press plate 4 shown in FIG. 1, and cooking operations using the press plate 14 are the same as those using the electromagnetic cooking container 1 shown in FIG. Omitted.

FIG. 8 shows a cross-sectional view of still another form of the electromagnetic cooking container.
The electromagnetic cooking container 21 is formed by a gently low hill 23 at the peripheral edge of the bottom surface of the pan body 22 and a mountain-shaped convex portion 24 having a gentle cross section at the same height as the hill 23 at the center. .
At the time of cooking, the plateau 23 of the pan body 22 and the convex portion 24 come into contact with the plate of the electromagnetic cooker, and an air layer is formed between the plate. This air layer functions as a heat insulating layer after cooking, and heat transfer from the stored pot body 22 to the plate is alleviated.
The rest is the same as the electromagnetic cooking container 1 shown in FIG. 1, and the cooking operation using the electromagnetic cooking container 21 is the same as that using the electromagnetic cooking container 1, so detailed description is omitted. To do.
The hill 23 may be a continuous annular shape, but is preferably divided into an appropriate length to form a kind of air passage.

FIG. 9 shows a cross-sectional view of still another form of the electromagnetic cooking container.
This container 31 for electromagnetic cooking forms the step part 33 in the opening part of the pan main body 32, and makes it flat without providing a recessed part in the bottom part. A heating plate 34 is placed on the bottom surface of the pan body 32, and a pressing plate 35 is placed on the upper surface of the heating plate 34. Is set to 0.5 to 3.0 mm. The pressing plate used for the electromagnetic cooking container 31 is preferably a pressing plate with a finger notch as shown in FIG.
Others are the same as those of the electromagnetic cooking container 1 shown in FIG. 1, and the cooking operation using the electromagnetic cooking container 31 is the same as that using the electromagnetic cooking container 1, so detailed description is omitted. To do.

  The pan body of the electromagnetic cooking container, the shape of the press plate, and the like are not limited to the above-described structure.

In the above description, the pot body, the pressing plate, and the lid have been described as being made of ceramics. However, the pot body, the pressing plate, and the lid are not limited thereto, and may be formed of a nonconductive material such as heat-resistant glass.
Needless to say, the electromagnetic cooking container may be used to remove the heating plate and cook by direct fire.

It is a perspective exploded view showing one embodiment of the electromagnetic cooking container of this invention. (A) of the container for electromagnetic cooking shown in FIG. 1 is a top view, (b) is sectional drawing. It is a front view of the pressing plate in other embodiment of the container for electromagnetic cooking of this invention. It is a partially broken explanatory view which shows the relationship between the pressing plate shown in FIG. 3 and a pan body. The pressing plate in other embodiment of the electromagnetic cooking container of this invention is shown, (a) is a top view, (b) is sectional drawing. The holding plate in further another embodiment of the container for electromagnetic cooking of this invention is shown, (a) is a top view, (b) is sectional drawing. It is explanatory drawing which shows the manufacturing method of the pressing plate shown in FIG. It is sectional drawing which shows other embodiment of the container for electromagnetic cooking of this invention. It is sectional drawing which shows other embodiment of the container for electromagnetic cooking of this invention.

Explanation of symbols

1 Electromagnetic Cooking Container 2 Pan Body 3 Heating Plate 4 Holding Plate 5 Recess

Claims (4)

A thin plate-like porous heating plate made of conductive material is placed on the bottom surface of the pan body made of non-conductive material, and formed on the top surface of the heating plate with non-conductive material. In an electromagnetic cooking container on which a plate-like and porous holding plate is placed,
An electromagnetic cooking container, wherein an opposing distance between the inner surface of the pan body and the outer peripheral surface of the pressing plate is set to 0.5 to 3.0 mm.   The bottom surface of the pan body is provided with a recess for accommodating the heating plate and the pressing plate, and the facing distance between the side surface of the recess and the outer peripheral surface of the pressing plate is set to 0.5 to 3.0 mm. The electromagnetic cooking container according to claim 1, wherein the container is an electromagnetic cooking container.   The depth of the recess is substantially equivalent to the thickness of the heating plate plus the thickness of the pressing plate. The heating plate and the pressing plate are accommodated in the recess, and the upper surface of the pressing plate The electromagnetic cooking container according to claim 1, wherein the container is set so that the bottom surface of the pan body is substantially flush with the bottom surface of the pot body.   The electromagnetic cooking container according to claim 1, 2, or 3, wherein holes having a diameter of about 3.0 mm are arranged on the entire surface of the heating plate with an arrangement interval of about 13 mm.

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