Cooking appliances for electric heaters

Abstract

To provide a cooking appliance for electronic heaters that allows for reliable heating from both above and below with simple preparation, regardless of the quantity or size of the ingredients being cooked. [Solution] An electronic heating appliance 1 comprises a container body 2 and a top lid 3, wherein the container body and the top lid are provided with an electromagnetic wave absorbing layer 4 containing a material that generates heat due to electromagnetic waves, wherein the container body has a bottom portion 21 and a side wall 22 that rises substantially vertically from the bottom portion, and two or more protrusions 23 are provided along the inner peripheral edge 221 of the side wall, and one or more other protrusions are provided at intervals on the inner surface of the side wall in the vertical downward direction for each of the protrusions on the inner peripheral edge, and the top lid has a shape that follows the contour of the inner surface 222 of the side wall of the container body when viewed from above, and the outer peripheral edge 31 is provided with a notch 32 through which the protrusions provided on the inner surface of the side wall of the container body can pass.

Description

Technical Field

[0001] The present invention relates to a cooking appliance for an electric heater.

Background Art

[0002] Conventionally, a microwave oven has been generally used as an electric heater for heating food. In cooking food using a microwave oven, microwaves are irradiated onto the moisture contained in the food, and the water molecules in the food are vibrated to generate heat for heating.

[0003] On the other hand, in recent years, there has been proposed a cooking appliance for a microwave oven that does not directly heat food with a microwave oven but heats the cooking appliance containing the food and heats the food by the heat of the cooking appliance (for example, see Patent Document 1).

[0004] This cooking appliance for a microwave oven has an upper heating body and a lower heating body that absorb microwaves and generate heat, and forms a heating space for heating a cooking material from above and below simultaneously between the upper heating body and the lower heating body. The upper heating body and the lower heating body are each formed by a heat generating part and a foam molding. And with this configuration, it is said that the whole cooking material can be heated evenly.

Prior Art Documents

Patent Documents

[0005] [[ID= (30)]]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, in the above-proposed cooking appliance for a microwave oven, the upper heating body is only placed on the upper surface of the cooking material in a drop lid shape, and since the upper heating body is formed of a foam, it is relatively lightweight and the pressing force from above is weak, and there are cases where sufficient cooking cannot be performed.

[0007] This invention was made in view of the above circumstances, and aims to provide a cooking appliance for an electronic heater that enables reliable heating from both above and below with simple preparation, regardless of the quantity or size of the ingredients being cooked. [Means for solving the problem]

[0008] In other words, the cooking appliance for electronic heaters of the present invention is characterized by the following: Firstly, the present invention provides an electronic heating appliance comprising a container body and a lid, wherein the container body and the lid are provided with an electromagnetic wave absorbing layer containing a material that generates heat due to electromagnetic waves, The container body has a bottom and side walls that rise substantially vertically from the bottom. Two or more protrusions are provided along the inner periphery of the side wall, For each of the projections on the inner periphery, one or more other projections are provided at intervals on the inner surface of the side wall in the vertically downward direction. The top lid is characterized in that, when viewed from above, it has a shape that follows the contour of the inner surface of the side wall of the container body, and the outer edge is provided with a notch through which the projection provided on the inner surface of the side wall of the container body can pass. Secondly, in the cooking appliance for an electronic heater according to the first invention, it is preferable that the vertical spacing between the multiple protrusions provided in the vertical downward direction of the group of protrusions is greater than or equal to the thickness of the edge of the upper lid. Thirdly, in the cooking appliance for an electronic heater according to the first or second invention described above, it is preferable that the opening of the container body and the outer edge shape of the top lid are circular. [Effects of the Invention]

[0009] According to the electronic heating appliance of the present invention, regardless of the quantity or size of the ingredients being cooked, it is possible to reliably heat food from both above and below with simple preparation. [Brief explanation of the drawing]

[0010] [Figure 1]This is a schematic diagram showing one embodiment of the cooking appliance for an electronic heater of the present invention, where (A) is a cross-sectional view and (B) is a top view. [Figure 2] Figure 1 shows an embodiment illustrating the usage state of a cooking appliance for an electronic heater, where (A) and (C) are cross-sectional views and (B) is a top view. [Modes for carrying out the invention]

[0011] First, the cooking appliance for the electronic heater of the present invention will be described in detail with reference to the drawings. Figure 1 is a schematic diagram showing one embodiment of the cooking appliance for the electronic heater of the present invention, where (A) is a cross-sectional view and (B) is a top view.

[0012] The present invention provides an electronic heating appliance 1 which consists of a container body 2 and an upper lid 3, and an electromagnetic wave absorbing layer 4 containing a material that generates heat when exposed to electromagnetic waves is provided on both the container body 2 and the upper lid 3. The container body 2 has a bottom 21 and side walls 22 that rise substantially vertically from the bottom 21. Two or more protrusions 23 are provided along the inner peripheral edge 221 of the side wall 22, and one or more other protrusions 23 are provided at intervals on the inner surface 222 of the side wall in the vertical downward direction for each of the protrusions 23 on the inner peripheral edge 221. The top lid 3 has a shape that follows the contour of the inner surface 222 of the side wall of the container body 2, and the outer edge 31 is provided with a notch 32 through which a projection 23 provided on the inner surface 222 of the side wall of the container body 2 can pass.

[0013] In the electronic heating appliance 1 of the embodiment shown in Figure 1, the opening of the container body 2 and the outer edge 31 of the top lid 3 are circular in shape, and the diameter of the top lid 3 is approximately the same as the diameter of the bottom 21 of the container body 2.

[0014] The container body 2 and the upper lid 3 are provided with an electromagnetic wave absorption layer 4 containing a material that generates heat by electromagnetic waves. The material of the electromagnetic wave absorption layer 4 is not particularly limited as long as it is a material that absorbs electromagnetic waves radiated from a microwave oven and converts them into heat. For example, ferrite, carbon-based materials, metal oxides (metallic oxides), materials containing metal fine particles, ceramics, etc. can be exemplified.

[0015] Ferrite is a material that has high electrical resistance while being a magnetic material and has high absorption efficiency of microwaves, and can convert electromagnetic waves into heat and generate heat uniformly. Also, carbon-based materials such as carbon fiber and carbon black also have the property of absorbing microwaves and efficiently converting them into heat.

[0016] Also, some metal oxides such as iron oxide and zinc oxide, and materials containing metal fine particles such as copper and aluminum have excellent characteristics in absorbing electromagnetic waves and can absorb the electromagnetic wave energy of a microwave oven to generate heat.

[0017] Furthermore, some ceramics also have the property of absorbing microwaves and can convert the absorbed energy into heat.

[0018] In addition, the meaning of the electromagnetic wave absorption layer in the present invention means that a material having the above characteristics is used even partially in the container body 2 and the upper lid 3. In addition to being provided in layers on the surface or inside, these are dispersed inside, or include the container body 2 and the upper lid 3 made of these substances. Since the materials of the container body 2 and the upper lid 3 include materials that do not transmit microwaves, direct heating of food by microwaves is avoided, and there is no risk that the moisture in the food is lost and affects the taste of the food.

[0019] In the cooking appliance 1 for an electric heater according to this embodiment, on the inner peripheral edge 221 of the upper opening of the container body 2, as shown in FIGS. 1(A) and (B), four protrusions 23 are provided along the inner peripheral surface, and on the inner surface 222 of the side wall in the vertically downward direction of each protrusion 23, two protrusions 23 are provided at intervals. That is, on the inner surface 222 of the side wall of the container body 2, a total of 12 protrusions 23 are provided in 3 columns and 4 rows around. Also, a handle 24 is provided near the opening of the container body 2.

[0020] Further, the upper lid 3 is circular along the contour of the inner surface 222 of the side wall of the container body 2, and on the outer peripheral edge 31, four notch portions 32 through which the protrusions 23 provided on the inner surface 222 of the side wall of the container body 2 can pass are provided. Also, a knob 33 is provided on the upper surface of the upper lid 3. The diameter of the upper lid 3 is equal to or less than that of the opening of the container body 2, and by passing the protrusions 23 through the notch, the upper lid 3 can be dropped to the bottom 21 of the container body 2 or its vicinity.

[0021] Furthermore, the interval between the three protrusions 23 provided at intervals on the inner surface 222 of the side wall in the vertically downward direction is set to be not less than the thickness of the edge portion of the upper lid 3. Thereby, by rotating the upper lid 3 in the horizontal direction with the notch portion 32 of the upper lid 3 passing through the protrusions 23, the outer peripheral edge 31 of the upper lid 3 comes into contact with the protrusions 23, and the height position in the vertical direction can be fixed.

[0022] In the above configuration, in particular, it is preferable that the interval between the protrusions 23 in the vertically downward direction is substantially equal to the thickness of the edge portion of the upper lid 3. Thereby, when the upper lid 3 rotates, the edge portion fits between the protrusions 23, and the upper lid 3 can be stably fixed.

[0023] Hereinafter, a cooking method using the cooking appliance for an electric heater of the present invention will be described with reference to the drawings. FIG. 2 is an embodiment showing the use state of the cooking appliance for an electric heater of the present invention, (A) and (C) are cross-sectional views, and (B) is a top view.

[0024] First, as shown in Figure 2(A), the cooking ingredients 5 are placed on the container body 2, and then the top lid 3 is lowered until it contacts the top surface of the cooking ingredients 5. At this time, the top lid 3 can be lowered to a predetermined depth by passing the projection 23 on the top lid 3 over the projection 23 on the container body 2. In this state, for example, as shown in Figure 2(B), the top lid 3 is rotated by about 45 degrees so that the notch 32 is offset from the projection 23. As a result, as shown in Figure 2(C), the outer edge 31 of the top lid 3 engages with the projection 23, and the top lid 3 does not come off the container body 2 even when lifted.

[0024] Next, the cooking appliance 1 for the electric heater in this state is placed in a microwave oven and heated under predetermined conditions. The cooking appliance 1 for the electric heater of the present invention is provided with an electromagnetic wave absorbing layer 4 containing a material that generates heat due to electromagnetic waves. As a result, direct irradiation of the cooking ingredients 5 with electromagnetic waves is suppressed, and instead, the cooking appliance 1 itself generates heat. This allows the cooking ingredients 5 to be heated while being securely sandwiched, enabling cooking that reliably browns both the top and bottom surfaces, which is not possible with a normal microwave oven.

[0025] Although the cooking appliance for electronic heaters of the present invention has been described above based on embodiments, the present invention is not limited to the above embodiments, and various modifications are possible without departing from the spirit of the invention.

[0026] For example, in the electronic heater cooking appliance 1 of the above embodiment, 12 protrusions 23 are provided in total, in 3 rows of 4, along the inner surface 222 of the side wall 2 of the container body 2. However, the configuration of the protrusions 23 is not limited to this, and the number of rows and the number of protrusions in each row can be appropriately set according to the size of the container body 2, etc.

[0027] Furthermore, the number of notches 32 provided on the outer peripheral edge 31 of the top lid 3 is not particularly limited as long as it is equal to or greater than the number of rows of protrusions 23 provided on the container body 2; for example, a multiple of that number of notches 32 can be provided. [Explanation of symbols]

[0028] 1. Cooking utensils for electric heaters 2. Container body 21 Bottom 22 Side wall 221 Inner periphery 222 Inner surface of side wall 23 Protrusion 24 Handles 3 Top lid 31 Outer edge 32 Notch 33 picks 4. Electromagnetic wave absorption layer 5. Cooking ingredients

Claims

1. An electronic heating appliance comprising a container body and a lid, wherein the container body and the lid are provided with an electromagnetic wave absorbing layer containing a material that generates heat when exposed to electromagnetic waves, The container body has a bottom and side walls that rise substantially vertically from the bottom. Two or more protrusions are provided along the inner periphery of the side wall, For each of the projections on the inner periphery, one or more other projections are provided at intervals on the inner surface of the side wall in the vertically downward direction. The aforementioned top lid has a shape that conforms to the contour of the inner surface of the side wall of the container body when viewed from above, and the outer edge is provided with a notch through which the projection provided on the inner surface of the side wall of the container body can pass.

2. The electromagnetic heating cooking appliance according to claim 1, characterized in that the vertical spacing between the multiple protrusions provided in the vertical downward direction of the group of protrusions is greater than or equal to the thickness of the edge of the top lid.

3. The cooking appliance for an electronic heater according to claim 1, characterized in that the opening of the container body and the outer edge shape of the top lid are circular.

Images