JP7103825B2 - Cooking device - Google Patents

Description

The present invention relates to a cooker.

The induction heating (IH) type rice cooker can suppress uneven heating and achieve uniform cooking.

Patent Documents 1 and 2 disclose an IH rice cooker including a plurality of coils for induction heating, that is, a multi-coil type IH rice cooker. In this type of rice cooker, the pot is locally heated in the area where the individual coils are located, resulting in local convection in the pot. These curved convections promote the agitation of rice and rice in the pot, so that the cooking is more uniform.

Japanese Unexamined Patent Publication No. 5-317172 Japanese Unexamined Patent Publication No. 5-253058

In a multi-coil type rice cooker, it is required to suppress the high frequency magnetic field generated from the coil from adversely affecting peripheral devices. From this point of view, a metal plate called a reflector may be arranged below the coil. Although there is no detailed description in Patent Documents 1 and 2 above, it is conceivable to use a reflector. However, there is no suggestion about the detailed shape of the reflector. Since this reflector can be used not only for rice cookers but also for other IH type cookers, it is widely required to optimize the shape of the reflector from the above viewpoint.

An object of the present invention is to suppress an adverse effect of a high frequency magnetic field generated from a coil on peripheral devices in a multi-coil type IH type cooker.

The present invention includes a bottomed cylindrical pot accommodating portion having a bottom, a side portion, and a curved portion connecting them, and at least the bottom portion of the pot accommodating portion and the outside of the curved portion, and the pan accommodating portion. A plurality of coils arranged apart from each other in the circumferential direction of the coil, and a plurality of coils arranged at least outside the bottom portion and the curved portion along the coil on the side opposite to the pot accommodating portion with respect to each of the coils. Provide a cooker with a reflector and.

According to this configuration, since the plurality of coils are arranged at the bottom of the pot accommodating portion and outside the curved portion, the coils are arranged three-dimensionally instead of two-dimensionally. In this way, uneven heating can be suppressed by performing three-dimensional heating. Normally, since the coils are arranged in a plane, the corresponding reflectors are also arranged in a plane, but the shape and arrangement of the reflectors are optimized for the coils arranged three-dimensionally as described above. It is generally difficult to do. On the other hand, in the above configuration, each of the reflectors is arranged on the side opposite to the pot accommodating portion with respect to each of the coils on the outside of the bottom portion and the curved portion along the coil shape. In other words, the reflector is sterically along the coil so that the high frequency magnetic field generated from the coil does not affect the direction opposite to the pot housed inside the pot housing (outside the pot housing). It is arranged. Therefore, the high-frequency magnetic field can be weakened by the reflector, and the high-frequency magnetic field generated from the coil can be efficiently suppressed from adversely affecting peripheral devices. The "bottomed cylindrical shape" of the pot accommodating portion is not limited to a strict cylinder, but also includes a tapered shape having a slope on the side portion. Further, the bottom portion, the side portion, and the curved portion are portions separated by curvature, and each portion is not always flat. Further, the curved portion may be a corner portion such as an R portion (fillet portion) connecting the bottom portion and the side portion.

The reflector has a bottom plate arranged so as to face the bottom portion of the pot accommodating portion, a side plate arranged so as to face the side portion of the pot accommodating portion, and a continuous portion connecting them. , An opening may be provided in the continuous portion.

According to this configuration, the reflector can be three-dimensionally arranged along the pot accommodating portion by the bottom plate and the side plate. Further, since the opening is provided in the continuous portion of the reflector, the opening is provided in the portion corresponding to the hollow inner shape of the coil. Therefore, the shape of the reflector can be made more suitable for the shape of the coil.

The continuous portion of the reflector may have a stepped portion formed so as to approach the coil.

According to this configuration, the reflector can be brought closer to the coil at the stepped portion. Therefore, it is possible to more efficiently prevent the high-frequency magnetic field generated from the coil from adversely affecting the peripheral device.

The bent portion of the pot accommodating portion may be provided with a boss, and the reflector may be provided with a screw hole for screwing to the boss.

According to this configuration, since the boss of the curved portion of the pot accommodating portion and the screw hole of the reflector are screwed together, the pan accommodating portion and the reflector can be fixed with a simple structure. In particular, in the above configuration, since the reflector is attached to the curved portion of the pot accommodating portion, the connection mode to the curved surface is such that a boss is erected on the curved portion so that the screw can be easily fastened to the curved surface.

Further provided with a ferrite holder having a through hole and arranged between the pot accommodating portion and the reflector for accommodating a ferrite core, the boss of the pot accommodating portion and the screw hole of the reflector. , The through hole of the ferrite holder may be fastened together.

According to this configuration, the magnetic flux from the coil can be converged by the ferrite core. Further, the co-tightening structure allows the pot accommodating portion, the coil, the reflector, and the ferrite holder to be arranged and fixed in a small space.

Each of the reflectors is arranged concentrically with each of the coils, and the reflector may have substantially the same outer shape as the outer shape of the coil when viewed from the central axis direction of the coil.

According to this configuration, the reflector is arranged at a position corresponding to the coil and has a shape corresponding to the coil. Therefore, it is possible to more efficiently suppress the adverse effect of the high-frequency magnetic field generated from the coil on peripheral devices. The "approximately the same outer shape" means that the outer shape of the reflector substantially covers the outer shape of the coil when viewed from the direction of the central axis of the coil.

According to the present invention, uneven heating can be suppressed in a multi-coil type IH type cooker.

A perspective view from above of the rice cooker according to the embodiment of the present invention. View from above of the rice cooker with the lid open View from above of the rice cooker with the pot removed from the state shown in FIG. Disassembled perspective view of rice cooker Perspective view of pot accommodating member An exploded perspective view of some internal parts of the rice cooker body Perspective view of the reflector Cross-sectional view showing the positional relationship between the pot housing, the reflector, the ferrite holder, and the coil. A perspective view of FIG. 8 as viewed from the central axis L direction.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view from above of the rice cooker (cooker) 1 according to the embodiment of the present invention. FIG. 2 is a perspective view from above of the rice cooker 1 with the lid 200 open. FIG. 3 is a perspective view from above of the rice cooker 1 in a state where the pot 10 is taken out from the state of FIG.

With reference to FIGS. 1 to 3, the rice cooker 1 is rotatably arranged with respect to the rice cooker main body 100 for detachably accommodating the bottomed cylindrical pot 10 for heating the cooked rice and the rice cooker main body 100. The rice cooker 200 is provided.

The lid 200 is rotatably attached to the hinge connection portion 121 of the rice cooker body 100, and when closed with respect to the rice cooker body 100, closes the opening of the rice cooker body 100. The lid body 200 has an operation unit 210 for operating the rice cooker 1 and a display unit 220 for displaying the operation status and the operation status on the front side thereof, and is an outlet of the exhaust passage on the rear side thereof. It has a steam outlet 230. The operation unit 210 has a plurality of operation buttons 211 and an release button 212. The operation button 211 is a button for switching the operating state of the rice cooker 1, for example, a button for starting rice cooking, a button for canceling the operation, a power button, and the like. The release button 212 is a button for opening the lid 200 whose closed state is maintained by the lock mechanism.

A U-shaped handle 20 is attached to the side surface of the rice cooker body 100. The handle 20 is designed to rotate with the mounting portion as a fulcrum.

As shown in FIGS. 2 and 3, an inner lid 240 that closes the upper end opening 11 of the pot 10 in a closed state is attached to the inside of the lid body 200. The inner lid 240 has a sealing member 241 that is in close contact with the inner peripheral portion of the upper end opening 11 of the pot 10 and closes the upper end opening 11. The inner lid 240 is detachably attached to the lid body 200.

FIG. 4 is an exploded perspective view of the rice cooker 1.

The rice cooker main body 100 has a box-shaped main body casing 114 having two facing side panels 111 and 112 arranged sideways, a front panel 113 arranged forward, and an opening 114a at the upper end as an exterior. And. The side panels 111 and 112 and the front panel 113 are attached to both side surfaces and the front surface of the main body casing 114, respectively.

A shoulder body 120 is attached to the main body casing 114 from above so as to cover the opening 114a. On the rear side of the shoulder body 120, a hinge connecting portion 121 for rotatably mounting the lid body 200 is provided. On the front side of the shoulder body 120, an engaging hole 122 (see FIG. 3) that engages with the lock claw 250 (see FIG. 3) provided at the front portion of the lid body 200 is provided. An inner body 125 for accommodating the pot 10 and a pot accommodating member 130 are arranged below the shoulder body 120. The inner body 125 is made of a cylindrical metal material.

FIG. 5 is a perspective view of the pot accommodating member 130.

The pot accommodating member 130 includes a pan accommodating portion 131 for accommodating the pan 10 and substrate supporting portions 132 and 133 for supporting the control substrates 140 and 141. The pot accommodating member 130 (more directly, the pan accommodating portion 131) is also called a protective frame and is made of a non-conductive material (for example, a synthetic resin material).

The pot accommodating portion 131 has a bottomed cylindrical shape having a disk-shaped bottom portion 131a, a cylindrical side portion 131b, and a curved portion 131c connecting them. Specifically, the bottom 131a has a circular shape extending substantially flat in the left-right direction. The side portion 131b has a substantially cylindrical shape extending in the vertical direction and outward. The curved portion 131c has a curved surface shape that connects the bottom portion 131a and the side portion 131b.

The substrate support portions 132 and 133 are provided on the front side and the rear side of the pot accommodating portion 131, respectively. The control boards 140, 141 housed in the board support portions 132, 133 control induction heating and the like, which will be described later. In particular, the control board 141 is cooled by the adjacent fans 142 (see FIG. 4).

A plurality of bracket portions 134 are provided on the upper peripheral portion of the pot accommodating member 130. The bracket portion 134 is used for screwing to the shoulder body 120. A central support portion 135 (clearly shown in FIG. 6) is provided in the center of the bottom surface of the pot accommodating member 130. The central support portion 135 has a substantially cylindrical shape and projects downward to abut and support the bottom plate of the opposing main body casing 114.

FIG. 6 is an exploded perspective view of a part of the internal parts of the rice cooker main body 100. FIG. 6 is shown upside down with respect to FIGS. 1 to 5. When the rice cooker main body 100 is viewed from below, the pot accommodating members 130, the coils 150a to 150c, the ferrite holders 160a to 160c, and the reflectors 170a to 170c are arranged so as to overlap in this order. In FIG. 6, three sets of coils 150a to 150c, ferrite holders 160a to 160c, and reflectors 170a to 170c are shown, and one set of coils 150a, the ferrite holder 160a, and the reflector 170a are disassembled. It is shown. Hereinafter, when it is not necessary to distinguish between them, they are also simply referred to as a coil 150, a ferrite holder 160, and a reflector 170, respectively. In FIGS. 4, 6 and 8, the shape of the coil 150 is schematically shown for the sake of clarity and simplification. In reality, the coil 150 has a spiral shape in which a plurality of windings are wound in the donut-shaped region shown in the figure.

On the outer peripheral surface of the pot accommodating portion 131, a coil 150 having an elliptical shape (specifically, an elliptical outer shape donut shape) is arranged in a plan view. In the present embodiment, the three coils 150a to 150c are arranged at equal intervals in the circumferential direction along the outer peripheral surface of the pot accommodating portion 131. The coil 150 generates an electromagnetic wave when a high-frequency current is applied, thereby inducing and heating the pot 10 via the pot accommodating member 130.

Immediately below the coil 150 (upper in FIG. 6), a ferrite holder 160 accommodating a ferrite core 165 for converging the magnetic flux from the coil 150 is arranged.

With reference to FIGS. 5 and 6, the ferrite holder 160 has a base portion 161 and four extending portions 162 extending radially from the base portion 161. That is, the ferrite holder 160 has a substantially cross shape in a plan view. Specifically, three of the four extension portions 162 are arranged along the bottom 131a of the pot accommodating portion 131, and the remaining one is arranged along the side portion 131b. The two extension portions 162 extend along the circumferential direction of the pot accommodating portion 131, and are arranged so as to hold down the elliptical major axis portion of the coil 150. The two extension portions 162 extend along the radial direction of the pot accommodating portion 131, and are arranged so as to hold down the minor diameter portion of the coil 150. In particular, the extension portion 162 arranged along the bottom portion 131a of the pot accommodating portion 131 is engaged with the engaging portion 136 at the upper part of the pot accommodating member 130. Each of the four extension portions 162 has a slot shape, and the ferrite core 165 is housed in the slot. The base portion 161 is provided with a boss receiver 164 in which a through hole 163 for screw fastening is formed. The ferrite holder 160 is provided with a fuse accommodating portion 166 extending in the same direction adjacent to the extending portion 162 extending along the bottom 131 a of the pan accommodating portion 131. The fuse accommodating portion 166 has a concave shape, and the fuse accommodating portion 166 accommodates a columnar thermal fuse 167. In FIG. 6, the thermal fuse 167 is removed from the fuse accommodating portion 166.

Immediately below the ferrite holder 160 (upper in FIG. 6), a reflector 170 is arranged to prevent a high-frequency magnetic field generated from the coil 150 from adversely affecting peripheral devices.

FIG. 7 is a perspective view of the reflector 170.

The reflector 170 has an integral structure formed by bending one sheet metal. The material of the reflector 170 is copper, aluminum, or the like, which has a lower electrical resistance value than the pot 10. The reflector 170 has a substantially elliptical shape in a plan view (see FIG. 9). The reflector 170 has a bottom plate 171 arranged to face the bottom 131a of the pot accommodating portion 131, a side plate 172 arranged to face the side 131b, and a continuous portion 173 connecting them. (This positional relationship is clearly shown in FIG. 8).

The bottom plate 171 is a flat plate having a substantially semi-elliptical shape. The details will be described later, but the curvature of the elliptical shape is substantially the same as the curvature of the elliptical shape of the corresponding coil 150.

The side plate 172 is a flat plate having a substantially semi-elliptical shape. The curvature of the elliptical shape is substantially the same as the curvature of the elliptical shape of the corresponding coil 150, similar to the bottom plate 171. A part of the outer peripheral portion of the side plate 172 is cut out in an arc shape in order to avoid other parts when assembled.

At the center of the continuous portion 173, an opening 173a having a shape corresponding to the inner shape of the coil 150 is provided (see FIG. 9). The opening 173a is formed by punching out a bottom plate 171 and a side plate 172, and a screw fastening portion 173c is bridged in the center thereof. Therefore, the opening 173a has two openings separated by a screw fastening portion 173c.

The screw fastening portion 173c is a portion where the bottom plate 171 extends to the continuous portion 173. The screw fastening portion 173c is provided with a screw hole 173d for screw fastening. Adjacent to the screw hole 173d, a projecting piece 173e rising vertically from the bottom plate 171 is provided. The projecting piece 173e comes into contact with the ferrite holder 160 when assembled to position the reflector 170 (see FIG. 8).

The continuous portion 173 is provided with two stepped portions 173b so as to sandwich the opening 173a. The step portion 173b has a first portion 173b1 extending from the bottom plate 171 in parallel with the rising side plate 172, and a second portion 173b2 extending from the side plate 172 in parallel with the rising bottom plate 171. The first portion 173b1 and the second portion 173b2 are connected at intersecting portions. More specifically, the step portion 173b is formed so as to approach the coil 150 when assembled (see FIG. 8). Further, in the portion where the first portion 173b1 rises from the bottom plate 171, an opening 173f is formed over the bottom plate 171 and the first portion 173b1 in order to facilitate bending.

FIG. 8 is a cross-sectional view showing the positional relationship between the pot accommodating portion 131, the reflector 170, the ferrite holder 160, and the coil 150.

The curved portion 131c of the pot accommodating portion 131 is provided with a columnar boss 131d provided with a screw hole. It extends perpendicularly to the boss 131d and the bottom plate 171, that is, extends vertically in the vertical direction. In the present embodiment, the boss 131d, the screw hole 173d of the reflector 170, and the through hole 163 of the ferrite holder 160 are co-tightened.

The coil 150 is arranged at the bottom 131a, the side 131b, and the curved 131c of the pot accommodating portion 131. Specifically, the coil 150 is in contact with the outer surfaces of the bottom 131a, the side 131b, and the curved 131c of the pan accommodating portion 131. In particular, from the viewpoint of promoting convection during rice cooking, the coil 150 is preferably arranged at least outside the bottom 131a and the curved portion 131c of the pot accommodating portion 131, that is, at least the bottom 131a and the curved portion of the pot accommodating portion 131. It is preferable that it is in contact with the outer surface of 131c. The reflector 170 is attached to the boss 131d of the curved portion 131c of the pot accommodating portion 131 via a ferrite holder 160 by a screw (not shown). In the attached state, the reflector 170 is arranged along the coil 150 on the outside of the bottom 131a, the curved 131c, and the side 131b.

The reflector 170 is arranged along the coil 150 at a substantially constant distance from the coil 150. In particular, the stepped portion 173b of the reflector 170 is formed so as to approach the coil 150, so that the distance is generally maintained even in the continuous portion 173. In the present embodiment, the coil 150 and the reflector 170 both share the central axis L. That is, the reflector 170 is arranged concentrically with the coil 150.

FIG. 9 is a perspective view of FIG. 8 as viewed from the central axis L direction. When viewed from the central axis L direction, the outer shape of the reflector 170 is substantially the same as the outer shape of the coil 150 (see the thick line in FIG. 9). Further, the shape of the opening 173a of the reflector 170 is substantially the same as the inner shape of the coil 150. Therefore, the coil 150 is designed to substantially overlap the reflector 170.

The control boards 140, 141 (see FIG. 5) of the rice cooker 1 are equipped with a microcomputer or the like and function as a control device. In the present embodiment, the control boards 140 and 141 are controlled so as to energize the coil 150 with a high frequency current at an appropriate timing as follows.

With reference to FIG. 6, for example, when a high-frequency current is applied only to the coil 150a, a wide area in the vertical direction (vertical direction) from the bottom surface portion to the side surface portion of the pan 10 (see FIG. 4) corresponding to the coil 150a is formed. Partially induced heating. By intensively heating the heating region, a large vertical convection occurs in the heating region in the pan 10. A large stirring effect can be obtained by large convection in the vertical direction, and the umami component (eluted sugar content, etc.) contained in cooked rice can be extracted during cooking. In order to intensively heat the heating region, it is preferable to energize the coil 150 for at least 0.5 seconds, although it depends on the heating output of the coil 150. For example, only the coil 150a is energized for 0.5 to 30 seconds.

Similarly, when a high-frequency current is applied only to the coil 150b for the above time, a wide vertical (vertical) region from the bottom surface to the side surface of the pot 10 corresponding to the coil 150b is partially induced and heated. A large vertical convection occurs in the heating region in the pot 10. Further, when a high-frequency current is applied only to the coil 150c for the above time, a wide area in the vertical direction (vertical direction) from the bottom surface portion to the side surface portion of the pot 10 corresponding to the coil 150c is partially induced and heated, and the pot is heated. A large vertical convection occurs in the heating region within 10.

In this way, for example, when only the coil 150a is energized and the other coils 150b and 150c are de-energized, the vertical direction (vertical direction) from the bottom surface portion to the side surface portion of the pot 10 corresponding to the energized coil 150a A large area is partially induced and heated, causing large vertical convection in the heating area within the pan 10. That is, the temperature difference between the partially heated region due to energization and the non-heated region due to non-energization becomes large, and a large convection occurs, so that a large stirring effect can be obtained.

Next, when only the coil 150b located next to the coil 150a is energized and the other coils 150a and 150c are de-energized, the vertical direction from the bottom surface to the side surface of the pan 10 corresponding to the energized coil 150b. A wide area (in the vertical direction) is partially induced and heated, and a large vertical convection occurs in the heating area in the pan 10. Further, when only the coil 150c located next to the coil 150b is energized and the other coils 150a and 150b are de-energized, the vertical direction from the bottom surface portion to the side surface portion of the pan 10 corresponding to the energized coil 150c ( A large region (in the vertical direction) is partially induced and heated, and a large vertical convection occurs in the heating region in the pan 10.

Therefore, among the plurality of coils 150, it is possible to control so that after energizing a certain coil, the other coil located next to the certain coil is energized and the other coils are de-energized in sequence. According to this control, large vertical convection due to partial heating moves sequentially in the circumferential direction of the pot 10 to generate convection in the pot 10 in which vertical convection and circumferential convection are combined. be able to. Due to the complex convection, the umami component (eluted sugar content, etc.) contained in cooked rice can be further extracted during cooking.

According to the rice cooker 1 of the present embodiment, there are the following merits.

According to this configuration, since the plurality of coils 150 are arranged outside the bottom portion 131a and the curved portion 131c of the pot accommodating portion 131, the coils 150 are arranged three-dimensionally rather than flatly. In this way, by performing three-dimensional heating, convection can be promoted in the pan 10 and uneven heating can be suppressed. Normally, since the coil 150 is arranged in a plane, the corresponding reflector 170 is also arranged in a plane, but the shape of the reflector 170 and the shape of the reflector 170 with respect to the coil 150 arranged three-dimensionally as described above It is generally difficult to optimize the placement. On the other hand, in the present embodiment, each of the reflectors 170 is arranged outside the bottom 131a and the curved 131c along the shape of the coil 150 on the side opposite to the pot accommodating portion 131 with respect to each of the coils 150. There is. In other words, the reflector 170 is coiled 150 so that the high-frequency magnetic field generated from the coil 150 does not affect the direction opposite to that of the pot 10 housed inside the pot accommodating portion 131 (outward direction of the pot accommodating portion 131). It is arranged three-dimensionally along. Therefore, the high-frequency magnetic field can be weakened by the reflector 170, and the high-frequency magnetic field generated from the coil 150 can be efficiently suppressed from adversely affecting peripheral devices.

Since the bottom plate 171 of the reflector 170 is arranged to face the bottom 131a of the pot accommodating portion 131 and the side plate 172 of the reflector 170 is arranged to face the side portion 131b of the pan accommodating portion 131, the pan accommodating portion 131 The reflector 170 can be arranged three-dimensionally so as to substantially follow. Further, since the opening 173a is provided in the continuous portion 173 of the reflector 170, the opening 173a is provided in the portion corresponding to the hollow inner shape of the coil 150. Therefore, the shape of the reflector 170 can be made more suitable for the shape of the coil 150.

Since the reflector 170 has the step portion 173b, the reflector 170 can be brought closer to the coil at the step portion 173b. Therefore, it is possible to more efficiently prevent the high-frequency magnetic field generated from the coil 150 from adversely affecting the peripheral device.

Since the boss 131d of the curved portion 131c of the pot accommodating portion 131 and the screw hole 173d of the continuous portion 173 of the reflector 170 are screwed together, the pan accommodating portion 131 and the reflector 170 can be fixed with a simple structure. In particular, in the above configuration, since the reflector 170 is attached to the curved portion 131c of the pot accommodating portion 131, the connection mode to the curved surface is such that the boss 131d is erected on the curved portion 131c so that the screw can be easily fastened to the curved surface. ing.

By providing the ferrite core 165, the magnetic flux from the coil 150 can be converged. Due to the co-tightening structure, the pot accommodating portion 131, the coil 150, the reflector 170, and the ferrite holder 160 can be arranged and fixed in a small space.

In the present embodiment, each of the reflectors 170 is arranged concentrically with each of the coils 150, and the reflector 170 has substantially the same outer shape as the outer shape of the coil 150 when viewed from the central axis L direction of the coil 150. In other words, the reflector 170 is arranged at a position corresponding to the coil 150 and has a shape corresponding to the coil. Therefore, it is possible to more efficiently suppress the adverse effect of the high frequency magnetic field generated from the coil 150 on the peripheral device. The "approximately the same outer shape" means that the outer shape of the reflector 170 substantially covers the outer shape of the coil 150 when viewed from the direction of the central axis of the coil.

Although specific embodiments of the present invention and variations thereof have been described above, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention.

For example, in the above embodiment, the case where the number of coils 150 is three is illustrated, but the number of coils 150 is not particularly limited and may be two or more.

Further, in the above embodiment, the rice cooker 1 for cooking rice and rice is given as an example of the cooker, but the present invention is not limited to the rice cooker 1, and for example, another object to be cooked (for example, beef). It can also be applied to a rice cooker that heats and cooks stews (stews such as stews and cream stews), and can exhibit the same actions and effects.

1 Rice cooker (cooker)
10 Pot 11 Top opening 20 Handle 100 Rice cooker body 111, 112 Side panel 113 Front panel 114 Body casing 114a Opening 120 Shoulder body 121 Hing connection part 122 Engagement hole 125 Inner body 130 Pot accommodating member 131 Pot accommodating part (protective frame) )
131a Bottom 131b Side 131c Curved 131d Boss 132, 133 Board Support 134 Bracket 135 Central Support 136 Engagement 140, 141 Control Board 142 Fan 150, 150a, 150b, 150c Coil 160, 160a, 160b, 160c Ferrite Holder 161 Base 162 Extension 163 Through hole 165 Ferrite core 166 Fuse housing 167 Thermal fuse 170, 170a, 170b, 170c Reflector plate 171 Bottom plate 172 Side plate 173 Continuous part 173a Opening part 173b Step part 173b 1st part 173b 173c Screw fastening part 173d Screw hole 173e Projection piece 173f Opening 200 Lid 210 Operation part 211 Operation button 212 Open button 220 Display part 230 Steam outlet 240 Inner lid 241 Seal member 250 Lock claw

Claims (6)

A bottomed cylindrical pot compartment with a bottom, sides, and bends connecting them,
A plurality of coils arranged at least at least at the bottom of the pot accommodating portion and outside the curved portion and spaced apart from each other in the circumferential direction of the pan accommodating portion.
A cooker comprising a plurality of reflectors arranged on the opposite side of each of the coils from the pot accommodating portion to at least the bottom portion and the outside of the curved portion along the coil. The reflector has a bottom plate arranged so as to face the bottom portion of the pot accommodating portion, a side plate arranged so as to face the side portion of the pot accommodating portion, and a continuous portion connecting them. The cooker according to claim 1, wherein an opening is provided in the continuous portion. The cooker according to claim 2, wherein the continuous portion of the reflector has a stepped portion formed so as to approach the coil. The cooker according to claim 2 or 3, wherein the curved portion of the pot accommodating portion is provided with a boss, and the reflector is provided with a screw hole for screw-fastening to the boss. A ferrite holder having a through hole and accommodating a ferrite core, which is arranged between the pot accommodating portion and the reflector, is further provided.
The cooker according to claim 4, wherein the boss of the pot accommodating portion, the screw hole of the reflector, and the through hole of the ferrite holder are co-tightened. Each of the reflectors is arranged concentrically with each of the coils.
The cooker according to any one of claims 1 to 5, wherein the reflector has substantially the same outer shape as the outer shape of the coil when viewed from the central axis direction of the coil.

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