JP2013000262A - Rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice cooker capable of preventing superheated steam from jetting from a lid part to the outside of a pot when a lid is opened in the rice cooker including a superheated steam generation device capable of further raising the temperature of the superheated steam and achieving the miniaturization of the device.SOLUTION: The rice cooker includes a steam generator 27 that generates steam, the superheated steam generation device 15, a lid open-close detector 25, and a controller 24. Since the electric conduction of the steam generator 27 and the superheated steam generation device 15 is made to stop when the lid open-close detector 25 detects the open state of the lid, the superheated steam is prevented from jetting from the lid 3 to the outside of the pot 2 when the lid 3 is opened.

Description

  The present invention relates to a rice cooker provided with a superheated steam generator for supplying superheated steam exceeding 100 ° C. into the pot from an opening of the pot.

  Conventionally, various types of rice cookers have been known. For example, Patent Document 1 (see Japanese Patent No. 4203995) discloses a rice cooker in which a heater is attached around a steam pipe (steam path) disposed in an internal space of a lid. According to the rice cooker of patent document 1, the steam which passes the inside of a steam pipe can be heated by heating a steam pipe with a heater, and the superheated steam exceeding 100 degreeC can be produced | generated.

Japanese Patent No. 4203995

  However, in the rice cooker of patent document 1, there exists a subject that the temperature of superheated steam cannot be made high (for example, 130 degreeC or more). That is, in a configuration in which a heater is disposed around the steam pipe and the steam passing through the steam pipe is heated, the steam and the heater are not in direct contact with each other, so the thermal efficiency of transferring the heat of the heater to the steam is low. Moreover, in the said structure, the heat of a heater spread | diffuses to a steam pipe body. Since the steam pipe has many portions that come into contact with air, the heating efficiency of the steam is deteriorated. For this reason, in order to raise the temperature of superheated steam in the said structure, it is necessary to make the output (work volume) of a heater high, for example. In order to increase the output of the heater, the heater may simply be enlarged. However, electrical appliances such as rice cookers are required to be further downsized. An increase in the size of the heater leads to an increase in the size of the rice cooker. In addition, when the lid is accidentally opened during cooking or warming, the steam that has passed through the steam pipe may be ejected from the lid as it is.

  An object of the present invention is to solve the above-mentioned problem, and in a rice cooker provided with a superheated steam generator that can further reduce the size of the apparatus while further increasing the temperature of the superheated steam, the lid is opened. And it aims at preventing that a superheated steam spouts out of a pan from a cover part.

  In order to solve the above-mentioned conventional problems, the rice cooker of the present invention comprises a pan that is detachably stored in a rice cooker body, heating means for heating the pan, and steam for supplying the pan. Steam generating means for generating, a lid main body covering the opening of the pan, a superheated steam generator for heating the steam generated from the steam generating means disposed in the lid main body to generate superheated steam, and A lid opening / closing detecting means for detecting an open / closed state of the lid body; and a control means for controlling energization of the heating means, the steam generating means, and the superheated steam generating device, wherein the control means includes the lid opening / closing detecting means. In the state where the open state is detected, the energization of the steam generating means and the superheated steam generator is stopped.

Thus, when the lid opening / closing detection means detects that the lid is open, no steam is generated from the steam generation means, and no superheated steam is generated from the superheated steam generator. When the is open, the superheated steam is not ejected from the superheated steam input pipe of the lid.

  According to the rice cooker according to the present invention, even if the lid is accidentally opened during rice cooking or the lid is opened to take the rice while keeping warm, the overheated steam is prevented from being ejected from the lid portion to the outside of the pan. be able to.

The schematic cross section of the rice cooker concerning embodiment of this invention. The top view which shows typically the state which notched some lids of the rice cooker concerning embodiment of this invention. Sectional drawing of the superheated steam rice cooker in Embodiment 2 of this invention.

  1st invention is a pan accommodated in the rice cooker main body, the heating means which heats the said pan, the steam generation means which generate | occur | produces the steam for supplying in the said pan, and the opening of the said pan A lid body that covers a portion, a superheated steam generator that generates superheated steam by heating the steam generated from the steam generating means disposed in the lid body, and a lid opening / closing detection that detects an open / closed state of the lid body Control means for energizing and controlling the heating means, the steam generation means, and the superheated steam generation device, wherein the control means is in the state where the lid open / close detection means detects the open state of the lid, By stopping energization of the steam generating means and the superheated steam generator, the temperature of the steam generated from the steam generating means is raised and the pressure and flow velocity of the steam are increased, and the steam is rapidly injected into the pan. And the rice in the pot In a rice cooker that can spread superheated steam over the body and cook delicious rice with stable steam temperature, when the lid opening / closing detection means detects that the lid is open, the steam generation No steam is generated from the means, and no superheated steam is generated from the superheated steam generator, so that the superheated steam is not ejected from the superheated steam inlet pipe of the lid, and the lid is opened from the lid with the lid open. It is possible to prevent spout of superheated steam to the outside.

  According to a second aspect of the present invention, in the first aspect of the present invention, the first aspect of the invention further includes a lid locking unit that restricts opening and closing of the lid. Therefore, in the process of generating steam from the steam generating means and further generating superheated steam from the superheated steam generator, the cover will not open even if the cover is opened. Therefore, it can prevent that a superheated steam blows out of a pan from the superheated steam injection pipe of a lid.

  According to a third aspect of the invention, particularly in the second aspect of the invention, the control means includes a display means for displaying the state of the rice cooker, and the control means covers the display means in the step of energizing the steam generation means and the superheated steam generation device. In the process of energizing the steam generating means and the superheated steam generating device during cooking or warming by displaying that the state is locked, the lid is opened by the lid locking means even if the user tries to open the lid. Can inform you that there is no.

(Embodiment 1)
The whole structure of the rice cooker in the 1st Embodiment of this invention is demonstrated using FIG. 1 or FIG. FIG. 1 is a schematic cross-sectional view of a rice cooker according to the first embodiment of the present invention. Drawing 2 is an upper surface figure showing typically the state where a part of lid of the rice cooker concerning the embodiment of the present invention was notched.

As shown in FIG. 1, the rice cooker concerning this embodiment is accommodated in the substantially bottomed cylindrical rice cooker main body 1 in which the pot accommodating part 1a was formed, and the pot accommodating part 1a, and rice and water are contained. It has a pan 2 that can be put in. A lid 3 having a hollow structure capable of opening and closing the upper opening of the rice cooker body 1 is attached to the top of the rice cooker body 1. A substantially disc-shaped inner lid (also referred to as a heating plate) 4 capable of sealing the upper opening of the pan 2 is detachably attached to the inside of the lid 3 (the side covering the opening of the pan 2).

  The pot storage part 1a of the rice cooker body 1 is composed of an upper frame 1b and a coil base 1c. The upper frame 1b has a cylindrical portion 1ba that is arranged so that a predetermined gap is provided with respect to the side wall of the stored pan 2, and an upper opening of the rice cooker body 1 that protrudes outward from the upper portion of the cylindrical portion 1ba. And a flange portion 1bb fitted to the inner peripheral portion. The flange portion 1bb is formed with a water tank storage portion 1bc for storing the water tank 5. The water tank 5 is a bottomed cylindrical container that holds water for generating steam. A water tank heating coil 6, which is an example of a water tank heating device for heating (induction heating) the water tank 5, is attached to the outer peripheral surface of the water tank housing 1 bc. Instead of the water tank heating coil 6, the water tank 5 may be heated by a heater. When the water tank heating coil 6 heats the water tank 5, the water in the water tank 5 boils and steam of about 100 ° C. is generated. The steam generating means 27 is composed of the water tank 5 and the water tank heating coil 6.

  In addition, an opening is provided in the side portion of the water tank storage portion 1bc. In the opening portion, a water tank temperature sensor 7 for measuring the temperature of the water tank 5 is disposed so as to be able to contact a side portion of the water tank 5 stored in the water tank storage portion 1bc.

  The coil base 1c is formed in a bottomed cylindrical shape corresponding to the shape of the lower portion of the pan 2, and the upper portion is attached to the lower end portion of the cylindrical portion 1ba of the upper frame 1b. A pan bottom heating unit 8 which is an example of a pan heating device for heating (induction heating) the pan 2 is attached to the outer peripheral surface of the coil base 1c. The pan bottom heating unit 8 includes an in-bottom heating coil 8a and an out-bottom heating coil 8b. The in-bottom heating coil 8a is disposed so as to face the periphery of the center of the bottom of the pan 2 via the coil base 1c. Outer bottom heating coil 8b is arranged so as to face the corner portion of the bottom of pan 2 via coil base 1c.

  An opening is provided in the central portion of the bottom of the coil base 1c. In the opening portion, a pan temperature sensor 9 which is an example of a pan temperature detecting unit for measuring the temperature of the pan 2 is disposed so as to be able to contact the bottom of the pan 2 stored in the pan storage unit 1a. . Since the temperature of the pan 2 is substantially the same as the temperature of the cooked rice in the pan 2, the pan temperature sensor 9 can detect the temperature of the cooked rice in the pan 2 by detecting the temperature of the pan 2. .

  The lid 3 includes an upper outer member 3 a and a lower outer member 3 b that constitute the outer shell of the lid 3. The lid 3 includes a hinge shaft 3A. The hinge shaft 3A is an opening / closing shaft for the lid 3, and both ends of the hinge shaft 3A are rotatably fixed to the upper frame 1b of the rice cooker body 1. The lid 3 is provided with a through hole 3c so as to penetrate the vicinity of the center portion in the thickness direction of the lid 3, and the steam cylinder 10 is detachably attached to the through hole 3c. Steam escape holes 10a and 10b are provided on the upper and bottom walls of the steam cylinder 10 so that excess steam in the pot 2 can be discharged to the outside of the rice cooker. An annular packing 11 is attached around the through hole 3 c on the inner lid 4 side of the lid 3. The packing 11 is provided so as to be in close contact with the periphery of the steam escape hole 4 a provided in the inner lid 4 when the inner lid 4 is attached to the lid 3.

  In addition, an inner lid temperature sensor 12, which is an example of an inner lid temperature detection unit that detects the temperature of the inner lid 4, is attached to the lid 3. An inner lid heating coil 13, which is an example of an inner lid heating device for inductively heating the inner lid 4, is attached to the inner surface (inner side of the lid) of the lower outer member 3 b serving as the bottom wall of the lid 3.

The inner lid 4 is made of a magnetic metal such as stainless steel capable of induction heating. An annular packing 14 is attached to the surface of the outer peripheral portion of the inner lid 4 on the pan 2 side. The packing 14 is
When the lid 3 is in the closed state, it is provided so as to be in close contact with the flange portion of the pan 2.

  In addition, a superheated steam generator 15 for introducing superheated steam exceeding 100 ° C. into the pot 2 is provided inside the lid 3. The superheated steam generator 15 is configured to be able to generate superheated steam by heating steam at about 100 ° C. generated in the water tank 5. A steam supply pipe 16 and a superheated steam input pipe 17 are connected to the superheated steam generator 15. In addition, the superheated steam generator 15 is in contact with a superheated steam temperature sensor 18 that is an example of a superheated steam temperature detection unit that detects the temperature of the superheated steam generated by the superheated steam generator 15.

  The steam supply pipe 16 communicates with the inside of the water tank 5 when the lid 3 is in a closed state, and is provided so as to guide the steam generated in the water tank 5 to the superheated steam generator 15. An annular packing 19 is attached to the end of the steam supply pipe 16 on the water tank 5 side. The packing 19 is provided in close contact with the flange portion of the water tank 5 when the lid 3 is in the closed state.

  The superheated steam input pipe 17 communicates with the inside of the pan 2 through the superheated steam input hole 4b provided in the inner lid 4 when the lid 3 is in the closed state, and the superheated steam generated by the superheated steam generator 15 is stored in the pan 2. It is provided to be put in. An annular packing 20 is attached to the end of the superheated steam input pipe 17 on the pan 2 side. The packing 20 is provided in close contact with the periphery of the superheated steam supply hole 4b of the inner lid 4 when the lid 3 is in the closed state.

  In addition, the lid 3 has a display unit 21 such as a liquid crystal display that displays various information such as a rice cooking course and rice cooking time, and a plurality of rice cooking courses such as a white rice course, a brown rice course, and a white rice (softer) course. The operation part 22 which is an example of the rice cooking course selection part which can select this rice cooking course, and the microcomputer 24 which is a control means are provided. The operation unit 22 includes a plurality of buttons such as a rice cooking start button so that instructions for starting, canceling, or making a reservation for cooking can be given in addition to selecting a rice cooking course. The user can select a specific rice cooking course with the operation unit 22 while referring to the display content of the display unit 21 and instruct the start of rice cooking.

  The microcomputer 24 includes a storage unit that stores a plurality of rice cooking sequences for cooking rice. Here, the “rice cooking sequence” is mainly composed of four steps of preheating, temperature rising, boiling maintenance, and steaming. In performing each step in turn, the energizing time, heating temperature, heating time, heating output, etc. This is a predetermined cooking procedure. Each rice cooking sequence corresponds to one of a plurality of rice cooking courses.

  Moreover, the microcomputer 24 controls the drive of each part and each apparatus based on the rice cooking course selected by the operation part 22, and the detected temperature of each temperature sensor 7, 9, and 12, and performs a rice cooking process. Further, the microcomputer 24 causes the superheated steam generator 15 to generate superheated steam based on the rice cooking course selected by the operation unit 22 and the detected temperature of the superheated steam temperature sensor 18.

  Further, inside the lid 3, a lid opening / closing detection means 25 for detecting the opening / closing state of the lid is provided. The lid opening / closing detection means 25 is a reed switch that opens and closes a contact point by the magnetism of a magnet 26 installed in the rice cooker body 1. When the lid is closed, the lid open / close detection means (reed switch) 25 is close to the magnet 26 and separates when the lid is open, so that the lid open / close detection is possible. The lid opening / closing detection means 25 detects opening / closing of the lid 3 and outputs a signal to the microcomputer 24.

Moreover, in the inside of the rice cooker main body 1, it is an example of the pot bottom heating unit 8 which is an example of the pan heating apparatus which heats the pot 2 (induction heating), and the water tank heating apparatus which heats the water tank 5 (induction heating). A water tank heating coil 6, an inner lid heating coil 13 that is an example of an inner lid heating device that induction-heats the inner lid 4, and a superheated steam generator 15 for introducing superheated steam exceeding 100 ° C. into the pan 2. In addition, a heating control unit 23 for supplying or stopping power independently is mounted. The heating control unit 23 controls energization of various heating units according to a control signal from the microcomputer 24.

  The operation in the rice cooking process of the rice cooker according to Embodiment 1 of the present invention configured as described above is the same as that for the water tank 5, the water tank heating coil 6, the superheated steam generator 15, and the lid open / close detection means. Description will be made by paying attention to the operation No.

  First, a user puts rice to be cooked and water corresponding to the amount of the rice into the pan 2 and decorates the main body 1. Further, a predetermined amount of water is put into the water tank 5 and is internally provided in the main body 1. When the user operates the rice cooking start switch 22, the rice cooking process is performed.

  A rice cooking process is divided into preheating, temperature rising, boiling maintenance, and steaming in order of time.

  In the preheating step, the pot bottom heating unit 8 is controlled so that the temperature of the pot 2 becomes a temperature suitable for water absorption of rice, and the rice and water in the pot are heated.

  Next, in the temperature raising step, the pot 2 is heated with a predetermined amount of heat by the pot bottom heating unit 8 until the temperature of the pot 2 reaches a predetermined value (100 ° C.). The amount of cooked rice is determined based on the temperature rise rate at this time.

  In the boiling maintenance process, the pot bottom heating unit 8 and the inner lid heating coil 13 are energized to heat the rice and water until the pot 2 has no water and the temperature of the pot 2 reaches a predetermined value exceeding 100 ° C.

  Finally, in the steaming step, heating (cooking) by the pan bottom heating unit 8 and the inner lid heating coil 13 corresponding to the amount of rice cooking and stopping (pause) heating are repeated a plurality of times during a predetermined time.

  In the preheating process, the energization amount to each heating means is small compared to the temperature raising process and the boiling maintenance process, and the power consumption of the whole rice cooker is small. Therefore, in the pre-cooking process, the water tank heating coil 6 is energized to preheat the water in the water tank 5.

  In the boiling maintenance process and the steaming process (at the time of additional cooking and at rest), the energization control of the water tank heating coil 6 and the superheated steam generator 15 is performed, and the steam generated from the water tank 5 is superheated by the superheated steam generator 15 and the pan 2 Supply superheated steam inside.

  Since the water in the water tank 5 has been preheated, it quickly boils and steam is introduced into the steam supply pipe 16.

  The superheated steam generator 15 is energized from the boiling maintenance step, and preheats to a predetermined temperature based on the temperature obtained from the superheated steam temperature sensor 18. As a result, the temperature of the steam introduced from the steam supply pipe 16 rises when passing through the superheated steam generator 15, and the temperature of the steam exhausted from the superheated steam input pipe 17 rises to 100 ° C. or higher.

  When heated while passing through the superheated steam generator 15 introduced from the steam supply pipe 16, the volume expands, the pressure of the superheated steam becomes higher than the atmospheric pressure, and the flow rate of the superheated steam increases. Therefore, by generating superheated steam at the optimum temperature and increasing the pressure and flow rate, the superheated steam can be spread over the entire rice in the pan 2, and the gelatinization of the rice can be further promoted and delicious rice can be cooked.

  As described above, when the user operates the rice cooking start switch 22, the rice cooking process is carried out. If the lid opening / closing button 31 is accidentally pressed to open the lid of the rice cooker during the rice cooking, the lid opening / closing detection means. 25 detects that the lid is opened. The lid opening / closing detection means 25 outputs the detected signal to the microcomputer 24.

  When the microcomputer 24 receives a signal from the lid opening / closing detection means 25 and determines that the lid 3 is open, the microcomputer 24 stops energization of the water tank heating coil 6 and the superheated steam generator 15.

  Since the heating means for heating the water tank 5 of the steam generation means 27 is the water tank heating coil 6 (induction heating) system, when energization is stopped, there is no residual heat as in the heater, so the water tank 5 is instantaneously supplied to the water tank 5. There is no heating and no steam is generated.

  As described above, in the present embodiment, the lid open / close detection means 25 detects the open / closed state of the lid 3, and the microcomputer 24 detects the open state of the lid based on the detection signal. Since the energization of the superheated steam generator 15 is stopped, no steam is generated from the steam generating means, and no superheated steam is generated from the superheated steam generator. It is possible to prevent the injection pipe from ejecting out of the pan.

  In the present embodiment, the operation when the water tank heating coil 6 and the superheated steam generator 15 are energized during rice cooking has been described. However, the water tank heating coil 6 and the superheated steam generator are also kept warm. The same effect can be obtained by performing the same operation in the step of energization control 15.

(Embodiment 2)
The rice cooker of Embodiment 2 of this invention is demonstrated using FIG. FIG. 3 is a cross-sectional view of the second embodiment rice cooker of the present invention. As shown in FIG. 3, the rice cooker in the present embodiment includes a lid opening / closing button 31 for opening and closing the lid 3 in front of the rice cooker body 1. Further, inside the main body 1, a lid locking means 32 that restricts the operation of the lid opening / closing button 31 is provided. The lid locking means 32 can restrict the operation of the lid opening / closing button 31 by a signal from the microcomputer 24 and prohibit the lid from opening. Since the other structure is the same as the rice cooker of Embodiment 1, the same code | symbol is used for a common part and the description is abbreviate | omitted.

  About the rice cooker of Embodiment 2 of this invention comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, a user puts rice to be cooked and water corresponding to the amount of rice into the pan 2, operates the lid opening / closing button 31 to open the lid 3, and the pan 1 is housed in the main body 1. Further, a predetermined amount of water is put into the water tank 5 and is internally provided in the main body 1. Then, the lid | cover 3 is closed and a rice cooking process will be implemented if a user operates the rice cooking start switch 22. FIG.

  A rice cooking process is divided into preheating, temperature rising, boiling maintenance, and steaming in order of time.

  In the preheating step, the pot bottom heating unit 8 is controlled so that the temperature of the pot 2 becomes a temperature suitable for water absorption of rice, and the rice and water in the pot are heated.

  Next, in the temperature raising step, the pot 2 is heated with a predetermined amount of heat by the pot bottom heating unit 8 until the temperature of the pot 2 reaches a predetermined value (100 ° C.). The amount of cooked rice is determined based on the temperature rise rate at this time.

  In the boiling maintenance process, the pot bottom heating unit 8 and the inner lid heating coil 13 are energized to heat the rice and water until the pot 2 has no water and the temperature of the pot 2 reaches a predetermined value exceeding 100 ° C.

  Finally, in the steaming step, heating (cooking) by the pan bottom heating unit 8 and the inner lid heating coil 13 corresponding to the amount of rice cooking and stopping (pause) heating are repeated a plurality of times during a predetermined time.

  In the steaming process (at the time of additional cooking and at rest), the water tank heating coil 6 and the superheated steam generator 15 are energized and controlled, and the steam generated from the water tank 5 is superheated by the superheated steam generator 15 and superheated into the pan 2. Supply.

  In the preheating process, the energization amount to each heating means is small compared to the temperature raising process and the boiling maintenance process, and the power consumption of the whole rice cooker is small. Therefore, in the pre-cooking process, the water tank heating coil 6 is energized to preheat the water in the water tank 5.

  In the steaming process, after the boiling maintaining process is finished, heating by the pan bottom heating unit 8 and the inner lid heating coil 13 is stopped, and the water tank heating coil 6 is energized. Since the water in the water tank 5 has been preheated, it quickly boils and steam is introduced into the steam supply pipe 16.

  The superheated steam generator 15 is energized just before the end of the boiling maintenance process, and preheats to a predetermined temperature based on the temperature obtained from the superheated steam temperature sensor 18. As a result, the temperature of the steam introduced from the steam supply pipe 16 rises when passing through the superheated steam generator 15, and the temperature of the steam exhausted from the superheated steam input pipe 17 rises to 100 ° C. or higher.

  When heated while passing through the superheated steam generator 15 introduced from the steam supply pipe 16, the volume expands, the pressure of the superheated steam becomes higher than the atmospheric pressure, and the flow rate of the superheated steam increases.

  Therefore, by generating superheated steam at the optimum temperature and increasing the pressure and flow rate, the superheated steam can be spread over the entire rice in the pan 2, and the gelatinization of the rice can be further promoted and delicious rice can be cooked.

  As described above, when the user operates the rice cooking start switch 22, the rice cooking process is performed. During the rice cooking, the microcomputer 24 switches the water tank heating coil 6 and the superheated steam generator 15 in each process during rice cooking. Energize control. At least during the energization time of the water tank heating coil 6 and the superheated steam generator 15, the microcomputer 24 outputs a lock signal to the lid locking means 32, and the lid 3 can be opened even if the lid opening / closing button 31 is operated. Ban.

  Further, as described above, while the microcomputer 24 outputs the lock signal to the lid locking means 32, the microcomputer 24 displays on the display unit 21 that the lid is prohibited from being opened and closed. A signal is being output.

  As described above, in the present embodiment, the open / close state of the lid 3 is detected by the lid open / close detection means 25, and the microcomputer 24 controls the energization of the water tank heating coil 6 and the superheated steam generator 15. Outputs a lock signal to the lid locking means 32 and restricts the operation of the lid opening / closing button 31. Therefore, even if the lid opening / closing button is accidentally operated during cooking, the lid 3 can be prevented from opening, It is possible to prevent the superheated steam from jetting out of the pan from the superheated steam input pipe.

  In the present embodiment, while the lock signal is being output to the lid lock means 32, the display unit 21 displays that the lid is prohibited from being opened and closed. Even when trying to open the lid during cooking, it can be notified that the lid 3 does not open.

  In the present embodiment, the operation when the water tank heating coil 6 and the superheated steam generator 15 are energized during rice cooking has been described. However, the water tank heating coil 6 and the superheated steam generator are also kept warm. The same effect can be obtained by performing the same operation in the step of energization control 15.

  As described above, the rice cooker of the present invention increases the temperature of the steam generated from the steam generating means and increases the steam flow rate, and vigorously throws it into the pan, so that the superheated steam is added to the whole rice in the pan. Can be spread, and the superheated steam can be ejected to the outside of the rice cooker, so that it is useful as a domestic and commercial rice cooker.

DESCRIPTION OF SYMBOLS 1 Rice cooker body 1a Pan storage part 2 Pan 3 Lid 3A Hinge shaft 4 Inner lid 5 Water tank 6 Water tank heating coil (water tank heating device)
7 Water tank temperature sensor 8 Pan bottom heating unit (pan heating device)
9 Pan temperature sensor (pan temperature detector)
10 Steam cylinder 11, 14, 19, 20 Packing 12 Inner lid temperature sensor (inner lid temperature detector)
13 Inner lid heating coil (Inner lid heating device)
DESCRIPTION OF SYMBOLS 15 Superheated steam generator 16 Steam supply pipe 17 Superheated steam injection pipe 18 Superheated steam temperature sensor (superheated steam temperature detection part)
21 Display Unit 22 Operation Unit 23 Heating Control Unit 24 Microcomputer (Control Unit)
25 Lid open / close detection means (reed switch)
26 Magnet 27 Steam generating means 31 Lid opening / closing button 32 Lid locking means

Claims (3)

A pan that is detachably stored in the rice cooker body, a heating unit that heats the pan, a steam generation unit that generates steam to be supplied into the pan, and a lid body that covers the opening of the pan A superheated steam generator for heating the steam generated from the steam generating means disposed in the lid body to generate superheated steam, a lid open / close detecting means for detecting an open / closed state of the lid body, and the heating means And control means for energizing and controlling the steam generation means and the superheated steam generation device, and the control means is configured to detect the steam generation means and the superheat when the lid open / close detection means detects an open state of the lid. A rice cooker that stops energization of the steam generator. The lid locking means for restricting opening and closing of the lid is provided, and the control means prevents the lid from being opened by the lid locking means in the step of energizing the steam generating means and the superheated steam generating device. rice cooker. A display means for displaying the state of the rice cooker is provided, and the control means displays in the step of energizing the steam generating means and the superheated steam generating device that the display means indicates that the lid is locked. Item 2. A rice cooker according to item 2.