JPH08187165A - rice cooker - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a rice cooker which is convenient for attaching and detaching the lid of the body that can be heated by the inner lid without electrical connection between the body side and the lid side of the body. [Structure] The inner pot 1 is housed in the body 2 to heat or heat to cook rice, and a metal inner lid 4 for closing the mouth of the inner pot 1 is provided inside the lid 3 of the body 2, The contents of the inner pot 1 can also be heated from the inner lid 4, and the outer lid of the inner lid 4 is provided with a facing portion 4a for the shoulder portion 113 of the body 2, and at least the facing portion 4a A part or the whole of the electromagnetic induction heating element 54 is provided, and a shoulder coil 53 that heats the electromagnetic induction heating element 54 by electromagnetic induction is provided in the shoulder 113 of the body 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker for heating the contents by using electric power, and more specifically, it stores rice in an inner pot to heat or heat to cook rice. The present invention relates to a rice cooker in which an inner lid made of metal for closing the mouth of the inner pot is provided inside the lid, and the contents of the inner pot can be heated from the inner lid.

[0002]

2. Description of the Related Art Some rice cookers using electric power use a heater that generates heat by supplying electric power, or one that heats the inner pot itself by electromagnetic induction.

When the inner pot is heated from the outside by using a heater, the heating tends to be biased. In the case of heating by electromagnetic induction, the entire inner pot generates heat, so the heating around the inner pot is equalized.

However, none of them can be heated by the large mouth of the inner pot. Therefore, in order to supplement this, a lid heater is provided on the inner lid so that the contents can be heated from the inner lid even at the large mouth portion of the inner pot.

[0005]

By the way, in response to the power source being connected to the body side, the power supply to the lid heater as described above is performed by connecting the power source connected to the body side to the body side. This is performed via the control circuit provided. For this reason, lead wires are introduced into the lid of the body provided so that it can be opened and closed from the side of the body to connect with the lid heater.

[0006] The steam discharge passage provided in the lid of the body for preventing abnormal pressure rise is easily soiled by the steam blown by the steam of the ladle, but the lid of the body is detached if there is a connection with the body side as described above. It is inconvenient to wash because it cannot be done and it is difficult to keep it clean.

In order to be able to attach / detach the lid of the body without disturbing the connection, it is necessary to provide a connecting portion which is connected / disconnected with the attachment / detachment of the lid of the body in the middle of the connection. It is complicated and expensive, and it is not practical to have such a connecting structure in a part of the body that is affected by washing water, steam, and dew condensation water.

An object of the present invention is to solve such a problem, and to attach and detach the lid of the body which can be heated by the inner lid without electrical connection between the body side and the lid side of the body. The purpose is to provide a convenient rice cooker.

[0009]

A rice cooker according to the present invention stores an inner pot in a body and heats or heats it to cook rice.
A rice cooker in which the lid of the body is provided with a metal inner lid that closes the mouth of the inner pot, and the contents of the inner pot can also be heated from this inner lid, and the above-mentioned problems are achieved. To this end, the outer peripheral portion of the inner lid is provided with a portion facing the shoulder portion of the body, and at least a part or the whole of this facing portion is used as an electromagnetic induction heating element, and the electromagnetic induction heat is generated in the shoulder portion of the body. The first is to install a shoulder coil that heats the body by electromagnetic induction.
It is a feature of.

Further, the inner lid is provided with a lid heater composed of a heating wire and the like, and a lid coil connected to the lid heater is provided in an outer peripheral portion of the lid of the lid, which is opposed to a shoulder portion of the body. A second feature is that a shoulder coil for generating electromagnetic induction power is provided in the lid coil in the shoulder portion of the.

[0011]

In the rice cooker of the present invention, since the metal inner lid provided inside the lid of the body heats the rice cooker, the contents in the inner pot can be heated more evenly around the rice cooker and the heat insulator. According to the above configuration of the first feature, in particular, at least a part or the whole of the facing portion of the outer peripheral portion of the inner lid facing the shoulder portion of the body is an electromagnetic induction heating element that generates heat by electromagnetic induction, This is caused to generate heat by electromagnetic induction from the shoulder coil provided inside the shoulder of the body, and the heat of this heat is conducted to the entire area of the inner lid made of metal, so that the body side and the lid side of the body are It is possible to achieve heating from the inner pot mouth part by the inner lid without electrical connection between the two, and no special electrical connection structure is required to remove the lid of the body from the body. The disadvantages of such an electrical connection structure are avoided. In addition, since the inner lid itself also generates heat without electrical connection to the other, no special electrical connection structure is required to make it removable from the lid of the body, and there is no disadvantage due to this.

Further, according to the above-mentioned configuration of the second feature, the lid heater provided on the inner lid is connected to the lid coil provided in the outer peripheral portion of the lid of the lid facing the shoulder portion of the lid, This lid coil generates electromagnetic induction power by electromagnetic induction from the shoulder coil provided in the shoulder portion of the body, and by supplying this electromagnetic induction power, the lid heater generates heat and heats the inner lid. Without electrical connection between the body side and the lid side of the body,
It is possible to achieve heating from the mouth of the inner pot by the inner lid, no special electrical connection structure is required for attaching and detaching the lid of the body from the body, and there are disadvantages due to such an electrical connection structure. Avoided.

[0013]

EXAMPLE A first example of the present invention shown in FIGS. 1 to 5 will be described. The present embodiment is a rice cooker that heats rice and keeps it warm after it is cooked.

As shown in FIG. 1, the overall construction is made of a container 2 for accommodating the inner pot 1, a lid 3 for opening and closing the container 2, and a metal provided inside the lid 3 to close the inner pot 1. It has an inner lid 4.

The body 2 is made of synthetic resin and has a bottomed outer wall 11.
And a bottomed interior wall 12 made of synthetic resin, and a shoulder member 13 made of synthetic resin that connects both mouth portions, and the exterior wall 11 and the shoulder member 13 are connected by a force fitting portion 14. There is. A coil stand 16 made of synthetic resin on which a work coil 15 that heats the inner pot 1 by electromagnetic induction is mounted is applied to the bottom of the interior wall 12, and both are integrated by a screw 17. By this integration, the interior wall 12 functions as a protective frame that covers the work coil 15 received on the coil base 16 from above, and the coil base 16 is coupled to the bottom of the exterior wall 11 by the screw 18 and the shoulder member 13. By the connection with the screw 19 with the interior wall 12, the exterior wall 11 and the shoulder member 13 are integrated with each other to form the body 2 firmly.

A raised portion 11a above the bottom of the exterior wall 11
On the lower surface of the coil stand 16 and the peripheral wall portions 11b and 16a provided on a part of both of them, a circuit installation space 21 is formed which is partially isolated from the surroundings.
The circuit board 22 partially exposed to is attached to the lower surface of the coil base 16 by a screw 25 with a gap 24 formed by a boss 23, and the circuit board 22 is equipped with a high-power circuit portion mainly for electromagnetic induction. A downward recess 11c provided beside the raised portion 11a on the bottom of the exterior wall 11 and the circuit installation space 21.
A cooling fan 31 mainly for an IGB transistor (not shown) that generates heat in the high-voltage circuit portion on the circuit board 22 is installed in the portion of FIG. 11d is provided. The circuit board 22 is installed so as to be located in the circuit installation space 21 if the influence of the surroundings of the electric parts provided in the high-voltage circuit part, especially the influence of the invading water, the dew condensation water, or the air flow is a problem. .

A cylindrical portion 16b formed in the center of the coil base 16
A sensor holder 26 is provided in the inside of the sensor holder 2 so that a predetermined amount of the sensor holder 2 is projected from an opening at the center of the bottom of the interior wall 12 to the upper surface of the bottom of the interior wall 12 by upward biasing of the spring 27.
An inner pot housed in the body 2 is provided with a temperature sensor 28a for rice cooking control that detects the rice cooking temperature and a temperature sensor 28b for abnormal time control that detects an abnormal temperature inside the projecting end of 6 The temperature of the inner pot 1 is detected in a state where the bottom portion of the container 1 presses the sensor holder 26 while pressing it down. A reed switch 29a for detecting the presence or absence of the inner pot 1 and a magnet between the sensor holder 26 and the cylindrical portion 16b depending on the height difference depending on whether or not the inner pot 1 is accommodated in the body 2 of the sensor holder 26. 29b are provided.

A warming heater 32 composed of a heating wire or the like and covered with a protective tube is directly wound around the outer peripheral surface of the body of the interior wall 12, and the outside of the warming heater 32 is wide over almost the entire length of the interior wall 12. Covered with a metal strip 33, a warming heater 32
The heat of the heat retaining heater 32 is quickly conducted to almost the entire length of the interior wall 12 and the heat of the heat retaining heater 32 is concentrated on the local part of the interior wall 12 made of synthetic resin and deteriorates it. While avoiding, uniform heating from a wide area by an appropriate amount of heat dispersed over a wide area of the entire length of the interior wall 12,
It is applied around the torso of the inner pot 1 to ensure optimal heat retention.

Between the outer body 11 and the inner wall 12 of the body 2 at the front of the body, a circuit installation space 3 which is larger than other portions is provided.
4, the electronic control circuit board 35 is installed therein, the operation surface 36 is provided on the upper surface of the shoulder member 13 on the front side forming the circuit installation space 34, and the back surface of the operation surface 36 is formed. The operation circuit board 37 is installed in the.

The operation circuit board 37 is provided with various display lamps including various digital display sections and LEDs, and various key switches for setting various operation modes and timers, and starting and stopping operations. It is housed and held in a resin case 38 together with the electronic control circuit board 35. In the case 38, a part 38 a accommodating the operation circuit board 37 is partly engaged with the lower surface of the shoulder member 13 and partly screwed 39.
The part 38b accommodating the electronic control circuit board 35 is made to hang down inside the circuit installation space 34.

The lid 3 of the body 2 is a synthetic resin front plate 41.
And a back plate 42 made of synthetic resin, which is applied to the inside thereof, are joined by screws 49 to form a hollow. on the other hand,
As shown in FIGS. 1 and 2, the rear fixed bearing portion 1 of the shoulder member 13
3a, the lid support member 44 is pivotally supported by the hinge pin 43,
As shown in the figure, the rear portion of the lid 3 is fitted to the lid support member 44 so that the lid 3 can be opened and closed by pivoting about the hinge pin 43 during the fitted state. ing.

The lid 3 is biased in the opening direction between the lid 3 and the fixed bearing portion 13a by a spring 45 having a helix portion mounted around the hinge pin 43.

A lock member 46 is pivotally provided on a shaft 40 at a front portion which is a free end of the lid 3, and a locking portion (not shown) provided on a part of the shoulder member 13 when the lid 3 is closed. The lid 3 is locked in a closed state by elastically engaging with. The lock member 46 is pushed downward by the external lock release operation portion 46a against the spring 47 exerted thereon,
The engagement with the locking portion is released, and the locking of the lid 3 is released. Lid 3
When the lock is released, the spring is automatically opened by the urging of the spring 45. At this time, the opening speed is braked by the resistance when the leaf spring 48 provided on the lid 3 comes into sliding contact with the back portion of the fixed bearing portion 13a, and is opened gently.

A vapor vent passage 51 is provided in the center of the lid 3, and an opening 51 provided in the back plate 42 of the vapor vent passage 51.
A synthetic resin knob 52 fixed to the central upper surface of the inner lid 4 is fitted to a from below so as to be attachable and detachable by utilizing the elasticity of the rubber ring 53 on the outer periphery, and is integrated with the lid 3 of the body 2. The inner lid 4 can be handled independently from the lid 3 by releasing the fitting. Therefore, it is possible to disassemble each and easily wash every corner. Moreover, since neither the lid 3 nor the inner lid 4 has an electric component or a connecting portion, it is particularly easy to clean.

However, the rice cooker of the present embodiment enables the contents of the inner pot 1 to be heated from such an inner lid 4 as well. Therefore, as shown in FIG. 1 and FIG. 2, the facing portion 4a for the shoulder portion 113 formed by the shoulder member 13 of the body 2 is provided on the outer peripheral portion of the inner lid 4, and at least a part or the whole of the facing portion 4a is provided. Is provided as an electromagnetic induction heating element 54, and a shoulder coil 53 that heats the electromagnetic induction heating element 52 by electromagnetic induction is provided in the shoulder portion of the container 2. Shoulder coil 53
As shown in FIG. 2, a coil receiving plate 71 made of synthetic resin is attached to the inner surface of the shoulder portion 113 formed by the shoulder member 13 with a screw 72 and held inside the shoulder portion 113.

As described above, in this embodiment, the electromagnetic induction in which at least a part or the whole of the facing portion 13a facing the shoulder portion 113 formed by the shoulder member 13 of the body 2 on the outer peripheral portion of the inner lid 4 generates heat by electromagnetic induction. It consists of the heating element 54, and this is the body 2.
Heat is generated by electromagnetic induction from the shoulder coil 53 provided in the shoulder 113 of the. Since the heat of this heat is conducted to the entire area of the metallic inner lid 2, the inner pot by the inner lid 4 does not have to be electrically connected between the body 2 side and the lid 3 side of the body 2. Heating from one mouth can be achieved and the lid 3
No special electrical connection structure is required to remove from
The disadvantages of such an electrical connection structure are avoided. Moreover, since the inner lid 4 itself also generates heat without electrical connection to the other,
No special electrical connection structure is required to make it detachable from the lid 3, and there is no disadvantage due to this. Therefore, it is particularly advantageous for the cleaning.

The inner lid 4 is made of aluminum, and the electromagnetic induction heating element 54 is a stainless steel layer formed by spraying on the lower surface of the outer peripheral edge winding portion 4b of the inner lid 4, and this is used for electromagnetic induction from the shoulder coil 53. The heat is quickly transmitted to the entire area of the inner lid 4 made of aluminum, and the heating from the opening of the inner pot is achieved almost uniformly as set.

Such an electromagnetic induction heating element 54 may be formed on the entire surface of the inner lid 4, but the range as in this embodiment is sufficient.

At a portion of the inner lid 4 facing the mouth portion of the inner pot 1, a seal member 54 pressed against the inner lid 1 is attached by pressing with a crimping resin ring 56, so that the space between the inner pot 1 and the mouth portion is surely secured. In addition, a seal packing 59 attached by pressing with a holding tool 58 attached in common to the lower surface of the back plate 42 of the lid 3 is pressed against the outer peripheral surface of the upper surface of the inner lid 4. Thus, a wide tongue storage chamber 61 is formed between the inner lid 4 and the back plate 42 of the lid 3. On the other hand, a proper number of ventilation holes 4e are provided in the lowest portion 4d provided in the inner portion of the inner lid 4 immediately in contact with the seal packing 59.
The steam generated in the inner pot 1 enters into the abacus reservoir chamber 61 through the vent holes 4e, leaving the accompanying abacus in the abacus reservoir chamber 61, and the steam vent passage provided in the back plate 42. 1 enters the vapor vent passage 51 through the gap between the opening 51a and the knob 52, and is discharged to the outside from the opening 51b provided on the front plate 41 of the lid 3, at this time. The pressure at the time of cooking rice in the inner pot 1 is adjusted by setting the degree of resistance given to the steam passing through 51 so that the rice can be cooked under the proper pressure guarantee.

As shown in FIGS. 3 and 4, the coil base 16 has a container portion 16c which is circular when viewed from the plane where radial ribs 65b having an arcuate surface 65a along the bottom of the interior wall 12 are formed. Then, a water receiving flange 16d is integrally formed on the outer periphery of the upper portion of the container portion 16c, and this is from the front side of the body 2 in which the circuit installation spaces 21 and 35 in the body 2 are provided, to the opposite body 2 The water receiving flange 16d is inclined so as to be lower toward the rear side, and the water receiving flange 16d is formed into a planar shape substantially along the inner surface of the exterior wall 11 of the body 2 excluding the circuit installation space 34, and the outer periphery of the water receiving flange 16d. Is formed with a water stop peripheral wall 16e that rises up to a certain height from this, and a drainage gap 16f is formed at a position corresponding to the lowest position of the water receiving flange 16d of the water stop peripheral wall 16e to prevent an accident from above. Water leakage Condensed water is received by the water receiving flange 16d, is collected on the side where the circuit installation spaces 21 and 35 are not provided, and flows down through the drainage gap 16f to a portion such as an electric circuit in the body 2 that does not hate the influence of water, and the exterior It is designed to flow out through the gap at the bottom of the wall.

On the interior wall 12, as shown in FIGS. 1 and 5,
A waterproof flange 12a that covers the rear portion of the container portion 16c of the coil base 16 is integrally formed, and even if water leaks or condensed water from above is received, it is guided to the outer peripheral side and the container portion 1
6c is prevented from flowing out and entering.

The leg 16g provided on the coil base 16 for connecting the coil base 16 and the bottom of the exterior wall 11 with the screw 18 has a deep recess 16h which opens upward as shown in FIG. When it is located outside the waterproof flange 12a, water leaking from above or dew condensation water enters and collects there, and the body 2 tilts when carrying a rice cooker for handling. There is a risk that the accumulated water will flow into the container portion 16c and wet the work coil 15 and other electric parts.

Therefore, in this embodiment, the waterproof cover portion 12b for covering the upper ends of the legs 16g is partially formed integrally with the outer circumference of the waterproof flange 12a so as to prevent the above danger. The waterproof cover portion 12b may be formed by enlarging the outer shape of the waterproof flange 12a, but by providing it partially, it is possible to suppress the bulkiness of the surroundings.

FIG. 7 shows a second embodiment of the present invention, in which the electromagnetic induction heating element 154 of the inner lid 4 made of aluminum is replaced by the inner lid 4
This is different from the first embodiment in that a stainless steel ring is wound inside the edge winding portion 4b which is the portion 4a facing the shoulder portion. FIG. 8 shows a third embodiment of the present invention, in which a ring made of stainless steel as an electromagnetic induction heating element 254 is applied to the facing portion 4a of the aluminum inner lid 4 facing the shoulder 113 via a silicone rubber 81. Yes, the rivet 82 is integrated. The heat generated when the electromagnetic induction heating element 54 generates heat is conducted to the inner lid 4 via the rivets 82. The silicone rubber 81 serves to cover and decorate the joint between the inner lid 4 and the electromagnetic induction heating element 254. FIG. 9 shows the fourth embodiment of the present invention.
The inner lid 4 is formed of a clad material in which the aluminum plate 104 and the electromagnetic induction heating element 354 made of a stainless steel plate are combined, and the electromagnetic induction heating element 354 which is the stainless steel plate of the inner lid 4 is an electromagnetic wave from the shoulder coil. Heat is generated by induction, and this heat is quickly conducted to the entire area of the inner lid 4 by the aluminum plate 104. However, these other structures and functions and effects are substantially the same as those of the first embodiment, and therefore description thereof will be omitted.

10 and 11 show a fifth embodiment of the present invention. As shown in FIG. 10, the inner lid 4 made of aluminum is fitted to the opening 42a of the back plate 42 of the lid 3 with the outer peripheral portion 4d. The caulking is performed, and the sealing member 54 having the base portion sandwiched between the caulking portions is brought into pressure contact with the mouth portion of the inner pot 1 to ensure a reliable seal with the mouth portion. And this inner lid 4
The inner lid 4 so that it can be heated from the mouth of the inner pot 1
A lid heater 91 composed of a heating wire or the like is provided in the lid heater 91, and a lid coil 92 connected as shown in FIG. 11 to the lid heater 91 in the outer peripheral portion of the lid 3 of the lid 2 facing the shoulder 113 of the container 2. And a shoulder coil 93 for generating electromagnetic induction power in the lid coil 92 is provided in the shoulder 113 of the body 2.

As described above, in this embodiment, the lid heater 91 provided in the inner lid 4 is connected to the lid coil 92 provided in the outer peripheral portion of the lid 3 of the body 2 facing the shoulder 113 of the body 2. Then, the lid coil 92 is caused to generate electromagnetic induction power by electromagnetic induction from the shoulder coil 93 provided in the shoulder portion 113 of the body 2, and the lid heater 91 generates heat by supplying the electromagnetic induction power. Since the inner lid 4 is heated, the inner lid 4 can be connected without electrical connection between the body 2 side and the lid 3 side of the body 2.
It is possible to achieve heating from the mouth of the inner pot by means of the above, and there is no need for a special electrical connection structure for attaching and detaching the lid 3 of the container 2 to and from the container 2, and there is a disadvantage due to such an electrical connection structure. Is avoided.

The shoulder coil 93 is mounted in the same manner as in the first to fourth embodiments, and the lid coil 92 is mounted on the outer peripheral portion of the back plate 42 by a synthetic resin presser 95 attached to the back plate 42 with screws 94. It is attached so as to be sandwiched.

FIG. 12 shows a sixth embodiment of the present invention. In the fifth embodiment, the lid coil 92 and the shoulder coil 93 are vertically opposed to each other, whereas in the present embodiment, the lid coil is used. This is different in that the 92 and the shoulder coil 93 face each other on the left and right.

[0039]

Since the rice cooker of the present invention is also heated from the inner lid made of metal provided inside the lid of the body, the contents in the inner pot are heated more evenly around the rice cooker and the heat retention. According to the first characteristic, in particular, at least a part or the whole of the facing portion of the outer peripheral portion of the inner lid facing the shoulder portion of the body is made of an electromagnetic induction heating element that generates heat by electromagnetic induction, This is caused to generate heat by electromagnetic induction from the shoulder coil provided inside the shoulder of the body, and the heat of this heat is conducted to the entire area of the inner lid made of metal, so that the body side and the lid side of the body are It is possible to achieve heating from the inner pot mouth part by the inner lid without electrical connection between the two, and no special electrical connection structure is required to remove the lid of the body from the body. The disadvantages of such an electrical connection structure are avoided. In addition, since the inner lid itself also generates heat without electrical connection to the other, no special electrical connection structure is required to make it removable from the lid of the body, and there is no disadvantage due to this.

According to the second feature, the heater provided on the inner lid is connected to the lid coil provided on the outer peripheral portion of the lid of the body facing the shoulder portion of the body, and the lid coil is Electromagnetic induction power is generated by electromagnetic induction from the shoulder coil provided inside the shoulder of the body, and the lid heater generates heat by supplying this electromagnetic induction power to heat the inner lid. It is possible to achieve heating from the inner pot mouth part by the inner lid without electrical connection with the lid side of the, and no special electrical connection structure is required to detach the lid of the body from the body. However, the disadvantages due to such an electrical connection structure are avoided.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a rice cooker showing a first embodiment of the present invention.

FIG. 2 is a sectional view of a shoulder portion of the rice cooker of FIG.

FIG. 3 is a perspective view of a coil stand of the rice cooker of FIG.

4A and 4B are a plan view and a cross-sectional view of the coil stand of FIG.

5 is a plan view of an interior wall of the rice cooker of FIG. 1. FIG.

6 is a cross-sectional view showing a connecting portion of the coil stand of FIG. 3 with a bottom portion of an interior wall.

FIG. 7 is a sectional view of a shoulder portion of a rice cooker showing a second embodiment of the present invention.

FIG. 8 is a cross-sectional view showing an outer peripheral portion of an inner lid of a rice cooker showing a third embodiment of the present invention.

FIG. 9 is a cross-sectional view showing an outer peripheral portion of an inner lid of a rice cooker showing a fourth embodiment of the present invention.

FIG. 10 is a sectional view of a shoulder portion of a rice cooker showing a fifth embodiment of the present invention.

11 is a diagram showing a circuit configuration of a lid coil, a shoulder coil, and a lid heater of the rice cooker of FIG.

FIG. 12 is a sectional view of a shoulder portion of a rice cooker showing a sixth embodiment of the present invention.

[Explanation of symbols]

 1 Inner pan 2 Body 3 Lid 4 Inner lid 4a Facing part 53 Shoulder coil 54, 154, 254, 354 Electromagnetic induction heating element 91 Lid heater 92 Lid coil 93 Shoulder coil 113 Shoulder portion

Claims (2)

[Claims] 1. An inner pot is housed in a body to heat or heat to cook rice, and a metal inner lid for closing the mouth of the inner pot is provided inside the lid of the body. A rice cooker capable of heating the contents of an inner pot, wherein an outer peripheral portion of the inner lid is provided with a facing portion with a shoulder portion of the body, and at least a part or the whole of the facing portion is an electromagnetic induction heating element. In addition, the rice cooker is characterized in that a shoulder coil for heating the electromagnetic induction heating element by electromagnetic induction is provided in the shoulder portion of the bowl. 2. An inner pot is housed in a body to heat or heat to cook rice, and a metal inner lid for closing the mouth of the inner pot is provided inside the lid of the body. A rice cooker capable of heating the contents of an inner pot, wherein a lid heater is provided on the inner lid, and a lid coil connected to the lid heater is connected to the outer peripheral portion of the lid which faces the shoulder portion of the body. A rice cooker, characterized in that a shoulder coil for generating electromagnetic induction power is provided opposite to the lid coil in the shoulder portion of the body.