JP2017035322A - rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simultaneously and deliciously cook rice into types of cooked rice suited to respective tastes.SOLUTION: A rice cooker 10 includes a first rice cooking pot 55, heating means 14 for heating the first rice cooking pot 55, and control means 71 for controlling the heating means 14. The rice cooker further includes a second rice cooking pot 60 disposed inside the first rice cooking pot 55 and indirectly heated via the first rice cooking pot 55. The control means 71 can execute first rice cooking processing using only the first rice cooking pot 55, and second rice cooking processing using the first rice cooking pot 55 and the second rice cooking pot 60. The second rice cooking processing includes a step of increasing a heating amount per unit time applied to the first rice cooking pot 55 and the second rice cooking pot 60 more than that in the first rice cooking processing.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a rice cooker.

  The taste of rice varies from person to person even within the same household. For example, you may prefer harder rice than soft rice, or you may like white rice but not red rice. However, rice cookers cannot cook rice with different preferences (menus) at the same time. Therefore, when preparing rice with different tastes, it is necessary to cook rice in two steps. Patent Document 1 discloses a rice cooker that is provided with another container (steaming tool) that is detachably disposed in a rice cooking pan, and that can cook steamed food in another container at the same time using heat during rice cooking.

JP 2012-183223 A

  In the rice cooker of patent document 1, the steaming time required for the cooking of the foodstuff of another container is ensured by making the heating amount per unit time added to a rice cooker small in the process in which the inside of a rice cooker is boiling. . However, since the heating amount per unit time is small, there is an inconvenience that the taste of the rice cooked with this rice cooker is impaired. Moreover, in the rice cooker of patent document 1, when cooking rice with another container, since the heating amount per unit time is small, it cannot cook delicious rice.

  This invention makes it a subject to cook rice of the kind according to liking simultaneously deliciously.

  This invention is equipped with the 1st rice cooking pot in which a 1st rice cooking object is accommodated, the heating means which heats the said 1st rice cooking pot, and the control means which controls the said heating means, and a 2nd rice cooking object accommodates. The 2nd rice cooker arrange | positioned in the said 1st rice cooker in the state made and heated indirectly via the said 1st rice cooker is provided, The said control means is the said 1st rice cooker of the said 1st rice cooker. The first rice cooking process for cooking only the object and the second rice cooking process for cooking the first rice cooking object of the first rice cooking pot and the second rice cooking object of the second rice cooking pot can be performed. Yes, the 2nd rice cooking process provides the rice cooker which has the step which raised the heating amount per unit time added to the 1st rice cooking pot and the 2nd rice cooking pot from the 1st rice cooking process.

  Here, the first rice cooking object and the second rice cooking object include rice and water. Moreover, the rice cooking object contains the foodstuffs cooked with rice. Rice includes not only main grains such as cooked rice but also minor grains excluding main grains. Moreover, the seasoning liquid used when cooking cooked rice is contained in water. Moreover, heating the 1st rice cooker includes directly heating with a heater and induction heating with an induction heating coil. Moreover, heating the 2nd rice cooker via the 1st rice cooker means conducting the heat of the 1st rice cooker to the 2nd rice cooker and heating the heat of the 1st rice cooker in the 1st rice cooker. It includes heating the second rice cooker with (steam). Moreover, in the 2nd rice cooking process, the step which raised the heating amount from the 1st rice cooking process is a boiling-up process which maintains the inside of the 1st rice cooking pot in the temperature rising process and the 1st rice cooking pot in a boiling state, At least part of at least one.

  According to this aspect, since it has the step which raises the heating amount per unit time in the 2nd rice cooking process from the 1st rice cooking process, the time which the gelatinized starch on the surface of rice melts in water can be shortened. . Therefore, the rice which is the 1st rice cooking object in a 1st rice cooking pot can be cooked deliciously similarly to a 1st rice cooking process. Further, in the second rice cooking process, by increasing the heating amount per unit time, more steam is generated than in the first rice cooking process, and the temperature rise temperature of the first rice cooking pot also becomes higher, so that it is delayed from the first rice cooking pot. The amount of heating per unit time added to the second rice cooker that is heated up can be increased. Therefore, since the temperature of the 2nd rice cooking pot can be raised rapidly, the rice which is the 2nd rice cooking target in the 2nd rice cooking pot can also be cooked deliciously. And since this rice cooker can cook two types of rice from which preference (softness) differs, it can improve the convenience on use.

  An opening of the first rice cooker can be closed, and an exhaust hole that allows communication between the inside and the outside of the first rice cooker and a closing unit that closes the exhaust hole so as to be openable are provided. In addition, the first rice cooker including the second rice cooker is provided with a booster capable of boosting the inside of the first rice cooker to a pressure higher than the atmospheric pressure, and in the second rice cooking process, the first cooker is boosted by the booster. Thus, the heating amount per unit time added to the first rice cooker and the second rice cooker is increased. Here, as a pressure | voltage rise means, the 1st rice cooking rice is heated by supplying the air into the 1st rice cooking pot, and the said heating means which pressurizes the inside of a 1st rice cooking pot by heating a 1st rice cooking pot and generating a vapor | steam. And a pressurizing pump that pressurizes the inside of the pan. And according to this aspect, since it can control that the steam in the 1st rice cooker is discharged outside the rice cooker by obstructing the 1st rice cooker including the 2nd rice cooker, in the 1st rice cooker The temperature can be increased quickly. Moreover, even if the output of a heating means is made the same as a 1st rice cooking process by pressurizing the inside of the 1st rice cooker containing a 2nd rice cooker to a pressure higher than atmospheric pressure with a pressure | voltage riser, the 1st rice cooker and the 2nd rice cooker The amount of heating applied to the pan can be increased.

  In addition, in the 2nd rice cooking process which made the pressure higher than the 1st rice cooking process by the pressure | voltage rise means, since the vapor | steam in a 1st rice cooker is hard to be discharged | emitted out of a rice cooker, much calorie | heat amount is added to a 1st rice cooking object, The rice becomes soft compared to the 1 rice cooking process. In other words, rice absorbs more water, which makes the rice softer.

  Therefore, in the said 2nd rice cooking process, the execution time of the uneven process which steams the said 1st rice cooking object and the said 2nd rice cooking object is made shorter than the said 1st rice cooking process. According to this aspect, since it is possible to suppress the moisture from being absorbed by the rice in the unevenness process, the rice can be adjusted in the direction of hardening. Therefore, the rice cooked with the 1st rice cooking pot can be cooked deliciously with the softness according to the same taste as the 1st rice cooking process.

  Moreover, in the said 2nd rice cooking process, the thermal power by the said heating means of the uneven process which steams the said 1st rice cooking object and the said 2nd rice cooking object is made higher than the said 1st rice cooking process. According to this aspect, the moisture absorbed by the rice can be released, so that the cooked rice can be adjusted in the direction of hardening. Therefore, the rice cooked with the 1st rice cooking pot can be cooked deliciously with the softness according to the same taste as the 1st rice cooking process. Here, in order to increase the heating power by the heating means, there are a method of increasing the power (output) to be energized to the heating means and a method of increasing the energization ratio to be energized to the heating means. In this aspect, either one of the methods may be used to increase the thermal power, or both methods may be used to increase the thermal power.

  Moreover, instead of increasing the pressure in the first rice cooker by the boosting means, in the second rice cooking process, by increasing the heating power by the heating means, the unit per unit time applied to the first rice cooker and the second rice cooker. The heating amount may be increased. Here, the method for increasing the thermal power by the heating means is the same as described above. And according to this aspect, since the temperature in a 1st rice cooker can be heated up rapidly by raising a thermal power, the heating amount per unit time added to a 1st rice cooker and a 2nd rice cooker can be raised. .

  In addition, in the 2nd rice cooking process which raised the thermal power by a heating means from the 1st rice cooking process, the steam in a 1st rice cooker is easy to be discharged | emitted out of a rice cooker, and it becomes quick that the water in a 1st rice cooker runs out. The rice becomes harder than the first rice cooking process. In other words, rice absorbs less water, which makes the rice harder.

  Therefore, in the said 2nd rice cooking process, the execution time of the uneven process which steams the said 1st rice cooking object and the said 2nd rice cooking object is made longer than the said 1st rice cooking process. According to this aspect, the rice can be promoted to absorb moisture in the unevenness process, so that the cooked rice can be adjusted to be softened. Therefore, the rice cooked with the 1st rice cooking pot can be cooked deliciously with the softness according to the same taste as the 1st rice cooking process.

  Moreover, in the said 2nd rice cooking process, the thermal power by the said heating means of the uneven process which steams the said 1st rice cooking object and the said 2nd rice cooking object is made lower than the said 1st rice cooking process. According to this aspect, since it is possible to suppress the release of moisture contained in the rice in the unevenness process, it is possible to adjust the cooked rice in the direction of softening. Therefore, the rice cooked with the 1st rice cooking pot can be cooked deliciously with the softness according to the same taste as the 1st rice cooking process.

  Moreover, the cover body provided with the exhaust hole which can block | close the opening part of the said 1st rice cooker, and connects the inside and the exterior of the said 1st rice cooker, and the obstruction | occlusion means which obstruct | occludes the said exhaust hole so that opening is possible. In the 2nd rice cooking process, the inside of the 1st rice cooking pot is obstruct | occluded by the said obstruction | occlusion means at the uneven process which steams the said 1st rice cooking object and the said 2nd rice cooking object. According to this aspect, since it is possible to suppress steam from being discharged from the first rice cooker and the second rice cooker to the outside of the rice cooker, the rice is promoted to absorb moisture and cooked. Can be adjusted in the direction of softening. Therefore, the rice cooked with the 1st rice cooking pot can be cooked deliciously with the softness according to the same taste as the 1st rice cooking process.

  In the rice cooker of this invention, the heating amount per unit time can be raised from a 1st rice cooking process by performing pressure adjustment or a thermal power adjustment by a 2nd rice cooking process. Therefore, since the time for the starch on the surface of rice to dissolve in water can be shortened, rice can be cooked deliciously. Moreover, since the temperature of a 2nd rice cooker can be heated up rapidly by raising the heating amount per unit time, the rice which is the 2nd rice cooking target in a 2nd rice cooker can also be cooked deliciously. And since this rice cooker can cook two types of rice from which taste differs simultaneously, it can improve the convenience in use.

Sectional drawing which shows the rice cooker of 1st Embodiment. FIG. 1B is a partially enlarged sectional view of FIG. 1A. The disassembled perspective view which shows the main rice cooker and the auxiliary rice cooker. Block diagram of a rice cooker. The graph which shows the rice cooking control by a control means. The flowchart which shows the rice cooking control by a control means. Sectional drawing which shows the rice cooker of 2nd Embodiment. The graph which shows the rice cooking control of 2nd Embodiment. The flowchart which shows the rice cooking control of 2nd Embodiment. The graph which shows the rice cooking control of 3rd Embodiment. The flowchart which shows the rice cooking control of 3rd Embodiment. Sectional drawing which shows the modification of a rice cooker. Sectional drawing which shows the modification of the inner cover of a rice cooker.

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

(First embodiment)
FIG. 1A shows a rice cooker 10 according to the first embodiment. The cooker 10 mainly cooking pot placed detachably attached to cooker body 12 (first cooking pan) 55, auxiliary cooking pot placed detachably on the main cooking pot 55 (second cooking pot) 60. The rice cooker 10 includes a normal rice cooking menu that uses only the main rice cooking pot 55 and a simultaneous rice cooking menu that uses both the main rice cooking pot 55 and the auxiliary rice cooking pot 60. The microcomputer 71 (refer FIG. 3) which is a control means of the rice cooker 10 is the case where the normal rice cooking menu (1st rice cooking process) is selected, and the case where the simultaneous rice cooking menu (2nd rice cooking process) is selected. By changing the amount of heating per unit time applied to the pans 55, 60, two types of rice can be cooked deliciously at the same time.

(overall structure)
The rice cooker 10 includes a rice cooker body 12 and a lid 20 that is rotatably attached to the rice cooker body 12. The rice cooker main body 12 is provided with a pan accommodating portion 13 having an upper end opening for detachably accommodating the main rice cooking pan 55. On the bottom outer surface side of the pot accommodating portion 13, an induction heating coil 14 that is a first heating means is disposed via a ferrite core 15. In addition, a body heater 16, which is a second heating means for heating the upper part of the main rice cooker 55, is disposed on the outer peripheral side of the pot housing part 13. And the pot temperature sensor 17 which is the 1st temperature detection means which detects the temperature of the main rice cooking pot 55 so that it may be located between the induction heating coil 14 and the trunk | drum heater 16 in the pot accommodating part 13 is the pot accommodating part 13. It is arrange | positioned so that it may penetrate.

  The lid 20 is hinge-connected to the rice cooker body 12 so as to be openable and closable, and closes the upper portion of the pot accommodating portion 13. The lid 20 includes a lid body 21 located on the rice cooker body 12 side and a lid cover 22 that covers the outside of the lid body 21. A lock member 23 that maintains the lid 20 in a closed state with respect to the rice cooker body 12 is rotatably disposed on the lid body 21. In addition, an operation member 24 for opening operation for releasing the lock by the lock member 23 is disposed on the lock member 23.

  A heat radiating plate 25 is disposed on the lid 20 on the surface facing the main rice cooker 55. On the upper side of the heat radiating plate 25, a lid heater 26 as a third heating means is disposed. Inside the lid 20, a lid temperature sensor 27 (see FIG. 3) that is a second temperature detecting means for detecting the upper temperature in the main rice cooker 55 via the heat radiating plate 25 is arranged. An inner lid packing 28 that seals between the outer lid 29 and the inner lid 29 that is detachably disposed on the lower side of the radiator plate 25 is disposed on the outer peripheral portion of the radiator plate 25. The inner lid 29 is made of metal, and is provided with a pot seal member 30 that seals in close contact with the inner peripheral wall of the upper end opening of the main rice cooking pot 55 on the outer peripheral portion.

  The lid 20 includes an exhaust passage 32 that allows the exhaust hole 35 facing the inside of the main rice cooker 55 and the discharge port 52 exposed to the outside to communicate with each other and exhausts the steam in the rice cookers 55 and 60 to the outside of the rice cooker 10. . The exhaust passage 32 includes an opening / closing valve 33 disposed in the inner lid 29, a valve accommodating portion 39 formed in the lid body 21, a gap portion 44 formed between the radiator plate 25 and the inner lid 29, and a gap portion. The communication part 45 extended from 44 to the cover cover 22 and the steam port unit 48 which comprises the exit of the exhaust passage 32 are provided.

  The on-off valve 33 is a closing means for closing the exhaust passage 32 so as to be openable. This on-off valve 33 also has a function of a safety valve for preventing the inside of the main rice cooker 55 from exceeding the set pressure and abnormally increasing the pressure. In addition, the induction heating coil 14 operated in a state where the inside of the main rice cooker 55 is closed by the on-off valve 33 is a booster that can increase the pressure inside the main rice cooker 55 including the auxiliary rice cooker 60 to a pressure higher than the atmospheric pressure. Also serves as a function.

  As shown in FIG. 1B, the on-off valve 33 includes a valve seat 34 disposed on the inner lid 29, a housing cover 36 that covers the valve seat 34, and a ball member 38 disposed in the housing cover 36. . In a state where the exhaust hole 35 provided in the valve seat 34 is closed by the ball member 38, the main cooking pot 55 is heated by the induction heating coil 14, and steam is generated in the main cooking pot 55. Can be increased to a set pressure (for example, 1.30 atm) higher than atmospheric pressure. When the pressure in the main rice cooker 55 exceeds the set pressure due to the weight of the ball member 38, the ball member 38 is separated from the exhaust hole 35 by the vapor pressure in the main rice cooker 55, so that steam passes through the exhaust passage 32. Exhaust air and prevent abnormal pressure increase in the main rice cooker 55.

  The valve accommodating portion 39 has a dome shape with a lower end opening bulged upward from the lid body 21. The valve accommodating portion 39 is provided with an opening on the side where the lock member 23 is disposed, and the opening is closed by a packing 40. The heat radiating plate 25 is provided with a communication hole at a position facing the lower end opening of the valve accommodating portion 39, and a gap between them is sealed with a packing 41.

  The lid body 21 is provided with a solenoid 42 which is a driving means for the on-off valve 33 (ball member 38). The solenoid 42 retracts the rod 43 by energization, thereby enabling the ball member 38 to roll on the valve seat 34 and closing the exhaust hole 35. Thereby, the inside of the main rice cooker 55 can be boosted to a pressure higher than the atmospheric pressure. By moving the rod 43 forward by shutting off the energization, the ball member 38 is pressed through the communication port 37 of the housing cover 36 and separated from the exhaust hole 35. Thereby, the exhaust hole 35 can be opened and the pressure in the main rice cooker 55 can be returned to atmospheric pressure.

  The gap 44 is a space between the heat dissipation plate 25 and the inner lid 29, and the outer peripheral portion is sealed by the inner lid packing 28. The communication part 45 is a cylindrical duct part formed in the lid main body 21. The heat radiating plate 25 is provided with a communication hole at a position facing the communication portion 45, and the space between them is sealed with a packing 46. Further, the lid cover 22 is provided with a connection port at a position facing the communication portion 45, and a gap between them is sealed with a packing 47.

  The steam port unit 48 is detachably disposed on the back side of the lid cover 22. The steam port unit 48 includes a tray-like lower case 49 and an upper case 51 that closes the upper end opening of the lower case 49. The lower case 49 includes a cylindrical connecting portion 50 that protrudes downward, and the outer case is sealed by the packing 47 by being disposed on the lid cover 22. The upper case 51 is provided with a discharge port 52 that is an outlet of the exhaust passage 32. The steam port unit 48 may be integrally formed with the lid body 20.

(Composition of rice cooker)
As shown in FIG. 1A and FIG. 2, the main rice cooker 55 has a bottomed cylindrical shape with an open upper end, and the rice cooker main body 12 in a state in which a first rice cooking object including rice and water is accommodated therein. Placed in. Here, the rice accommodated in the main rice cooker 55 includes not only main grains such as cooked rice but also minor grains excluding the main grains. Moreover, the seasoning liquid used when cooking cooked rice is contained in water. Moreover, the rice cooking object contains the foodstuffs cooked with rice.

  The main rice cooker 55 is heated by electromagnetic induction by causing an eddy current to flow due to the generated magnetic field by passing a high-frequency current through the induction heating coil 14. An opening 57 at the upper end of the outer peripheral wall 56 of the main rice cooker 55 is provided with a flange 58 that protrudes radially outward. The flange portion 58 protrudes upward from the pan accommodating portion 13, and the inner peripheral side of the opening portion 57 is sealed by the pan seal member 30 by closing the lid 20. Referring to FIG. 1B, a locking step portion 59 is provided on the outer peripheral wall 56 of the main rice cooker 55 with a gap corresponding to the sealing amount of the pot seal member 30 with respect to the flange portion 58. The locking step 59 is formed by deep drawing so as to bulge inward in the radial direction.

  The auxiliary rice cooking pot 60 has a bottomed cylindrical shape with an outer diameter smaller than the inner diameter of the lower part of the locking step 59 of the main rice cooking pot 55. Inside the sub rice cooking pot 60, a second rice cooking object different from the first rice cooking object is housed, and is detachably disposed on the upper part of the main rice cooking pot 55. The second rice cooking object different from the first rice cooking object includes rice and water similar to the first rice cooking object. That is, it means that it is not a rice cooking object accommodated in the main rice cooking pan 55, and the kind and amount of rice and the amount of water (seasoning liquid) may be the same or different.

  The auxiliary rice cooker 60 is indirectly heated through the main rice cooker by arranging it in the main rice cooker 55. Here, heating the auxiliary rice cooker 60 via the main rice cooker 55 means that the heat of the main rice cooker 55 is conducted to the auxiliary rice cooker 60 and heated (heated), the first in the main rice cooker 55. Heating the auxiliary rice cooker 60 with the heat (steam) of the rice cooking object is included. An opening 62 at the upper end of the outer peripheral wall 61 of the auxiliary rice cooker 60 is provided with a flange 63 that protrudes radially outward. The flange portion 63 has an outer diameter that can be locked to the locking step portion 59 of the main rice cooker 55. Even if the auxiliary rice cooker 60 is arranged in the main rice cooker 55 and these are arranged in the rice cooker main body 12, the lid 20 is closed, and the pot seal member of the lid 20 is formed in the opening 62 of the auxiliary rice cooker 60. 30 does not touch.

  The flange portion 63 is provided with a ventilation portion 64 at a predetermined interval in the circumferential direction. The ventilation part 64 is provided by notching the flange part 63 within a set angle range. The steam generated in the main rice cooker 55 flows into the auxiliary rice cooker 60 through the ventilation portion 64 from between the outer peripheral wall 56 of the main rice cooker 55 and the outer peripheral wall 61 of the auxiliary rice cooker 60. And it flows into the exhaust passage 32 through the exhaust hole 35 located on the auxiliary rice cooker 60, and is exhausted out of the rice cooker 10.

  The auxiliary rice cooker 60 is provided with a pair of gripping portions 65, 65 that bulge outward at positions facing the radial direction of the outer peripheral wall 61. The auxiliary rice cooker 60 can be removed from the main rice cooker 55 by inserting the hand inside the auxiliary rice cooker 60 and holding the grip portions 65, 65. Moreover, the water level line which shows the amount of water according to the quantity (the number of cups) of the rice to cook rice is provided in the auxiliary rice cooking pot 60. FIG. In order to change the softness of the rice cooked in the auxiliary rice cooker 60, it is preferable to provide a plurality of water level lines for each same amount of cooked rice. In addition, rice cooking by the auxiliary rice cooking pot 60 may be only a fixed quantity, and you may provide the water level line for adjusting softness.

  As shown to FIG. 1A and FIG. 3, the rice cooker 10 is provided with the operation panel part 66 in the front upper part of the rice cooker main body 12, and the operation board | substrate 67 is arrange | positioned so that it may be located in the inside. A plurality of switches 68 serving as input means and a liquid crystal panel 69 serving as display means are mounted on the operation board 67. A control board 70 is disposed on the front side in the rice cooker body 12. A microcomputer 71 as a control means is mounted on the control board 70. The microcomputer 71 includes a ROM (storage means) 72 in which a program for executing processing is stored.

(Details of rice cooking process)
The microcomputer 71 controls the induction heating coil 14, the body heater 16, and the lid heater 26 to execute a rice cooking process including a preheating process, a temperature rising process, a boiling maintaining process, and a spotting process. Cook rice. As shown in FIG. 4, rice process of the present embodiment, the normal cooking menu for cooking only the first cooking object by using only the main cooking pot 55 (first cooking process), a main cooking pot 55 by-cooking The simultaneous rice cooking menu (2nd rice cooking process) which cooks the 1st rice cooking object and the 2nd rice cooking object using the pan 60 is provided. A 1st rice cooking process and a 2nd rice cooking process can be selected by operation of the switch 68 of the operation panel part 66. FIG.

  In the first rice cooking process, each step is executed without closing the main rice cooking pot 55 by opening the on-off valve 33. In the second rice cooking process, each step is performed in a state where the inside of the main rice cooking pot 55 including the auxiliary rice cooking pot 60 is closed by closing the on-off valve 33. In addition, although the auxiliary rice cooking pot 60 is not used in the 1st rice cooking process, the temperature transition of the auxiliary rice cooking pot 60 at the time of performing the 1st rice cooking process is described by the continuous line in the auxiliary rice cooking pot temperature of FIG. 4 for the comparison. ing.

(1st rice cooking process)
The preheating step is executed until a preset preheating execution time elapses, and water is absorbed by rice. Referring to the temperature of the main rice cooker in FIG. 4, the preheating step includes a first step of raising the temperature of the main rice cooker 55 to a set temperature, and a step of maintaining the main rice cooker 55 at a set temperature (for example, 50 ° C.). 2 steps. Referring to the first rice cooking power in FIG. 4, in the first step, the induction heating coil 14 is controlled at a higher energization rate than in the second step.

  The temperature raising process is performed until the induction heating coil 14 is operated at a higher output than the preheating process, and the lid temperature sensor 27 detects a set temperature (for example, 70 ° C.), and the temperature inside the main rice cooker 55 is raised to approximately the boiling temperature. Let Referring to the first rice cooking power in FIG. 4, the temperature raising step includes a first step of operating the induction heating coil 14 at a high energization rate and a second step of operating the induction heating coil 14 at a lower energization rate than the first step. Steps. In the temperature raising step, during the execution of the first step, a temperature increase gradient in which the temperature detected by the lid temperature sensor 27 increases from the first set temperature (for example, 40 ° C.) to the second set temperature (for example, 60 ° C.) is determined. Thus, the rice cooking capacity in the main rice cooking pan 55 is determined.

  A boiling maintenance process is performed until the pan temperature sensor 17 detects preset temperature (for example, 110 degreeC (dry up)), and cooks cooked rice. Referring to the first rice cooking power in FIG. 4, in the boiling maintenance process, the induction heating coil 14 is operated with the same output as the temperature raising process. Moreover, the induction heating coil 14 is on / off controlled at a lower energization rate than the temperature raising step (second step) so that the inside of the main rice cooker 55 maintains the boiling temperature.

  The unevenness process is performed until the predetermined unevenness execution time elapses, and steams the cooked rice in the main rice cooker 55. If the 1st rice cooking process electric power of FIG. 4 is referred, an uneven process will be provided with the 1st-4th step. In the first step, the induction heating coil 14 is operated at a lower output than the boiling maintenance step. In the second step, the induction heating coil 14 is operated at a higher output than in the first step. In the third step, the induction heating coil 14 is operated at the same output as the first step and at a lower energization rate than the first step.

(2nd rice cooking process)
Referring to the first rice cooking power shown by the solid line and the second rice cooking power shown by the broken line in FIG. 4, the first rice cooking process and the second rice cooking process control the induction heating coil 14 from the preheating process to the boiling maintenance process. Are the same and only the unevenness process is different. In the second rice cooking process, the inside of the main rice cooker 55 is boiled by closing the inside of the main rice cooker 55 with the on-off valve 33, and then the inside of the main rice cooker 55 is raised to a pressure higher than the atmospheric pressure. Thereby, the heating amount per unit time added to the main rice cooker 55 and the auxiliary rice cooker 60 is raised from the 1st rice cooking process.

  The preheating process of a 2nd rice cooking process is controlled by the same judgment criteria as a 1st rice cooking process. In this preheating step, the temperature of the main rice cooker 55 is raised by heating, but the temperature of the main rice cooker 55 is substantially the same as that of the first rice cooking process because the temperature is adjusted so as not to generate steam. The temperature of the auxiliary rice cooker 60 rises when the process proceeds to the second step of adjusting the temperature of the main rice cooker 55, but the temperature rise is due to the heat conduction of the main rice cooker 55, and therefore has a very gentle gradient.

  The temperature raising process of the second rice cooking process is controlled by the same criteria as the first rice cooking process. Referring to the temperature of the main rice cooker in FIG. 4, in this temperature raising step, the steam in the main rice cooker 55 can be suppressed from being discharged out of the rice cooker 10, and therefore compared with the first rice cooking process indicated by the solid line. The temperature in the main rice cooker 55 can be raised quickly. If the pressure in the pan in FIG. 4 is also referred to, when the temperature of the main rice cooker 55 exceeds the boiling temperature, the pressure in the main rice cooker 55 starts to rise. In addition, referring to the temperature of the auxiliary rice cooker in FIG. 4, the temperature of the auxiliary rice cooker 60 is increased by the steam generated in the main rice cooker 55, so that the temperature rises rapidly. In addition, since the temperature rise gradient of a 1st rice cooking process differs from the temperature rise gradient of a 2nd rice cooking process, the time which transfers to a boiling maintenance process differs. However, since it is a slight difference in the whole rice cooking process, in FIG. 4, it is illustrated so as to shift to the same time.

  The boiling maintenance process of a 2nd rice cooking process is controlled by the same judgment standard as a 1st rice cooking process. Referring to the main rice cooker temperature in FIG. 4, in the boiling maintenance step, the inside of the main rice cooker 55 is increased to a pressure higher than the atmospheric pressure, so that the temperature can be raised to a temperature higher than that of the first rice cooking process. Referring to the auxiliary rice cooker temperature in FIG. 4, since a large amount of steam is generated in the main rice cooker 55, the temperature of the auxiliary rice cooker 60 also rises rapidly. And also in the sub rice cooker 10, it can heat up exceeding 100 degreeC. Thus, in the boiling maintenance process, even if the induction heating coil 14 is operated with the same output, the inside of the main rice cooker 55 including the auxiliary rice cooker 60 can be boosted to a pressure higher than the atmospheric pressure. The amount of heating applied to the rice cooking pan 60 can be increased.

  In the second rice cooking process in which the pressure in the main rice cooker 55 is higher than that in the first rice cooking process, a large amount of heat is added to the rice in the temperature raising step and the boiling maintaining step described above. Softer than 1 cooked rice. This is because when the first rice cooking process and the second rice cooking process are compared, the second rice cooking process absorbs more water in the rice. Therefore, in the second rice cooking process, the rice is adjusted in the direction of becoming harder in the unevenness process so that the softness of the cooked rice is substantially the same as that of the first rice cooking process.

  As shown in the rice cooking power of FIG. 4, in the second unevenness process of the second rice cooking process, the execution time is made shorter than the first unevenness process of the first rice cooking process, and moisture is absorbed by rice. Suppressed. Moreover, the heating power (output) of the induction heating coil 14 is made higher than that in the first unevenness process, and the release of moisture absorbed by rice is promoted. The method of increasing the heating power of the induction heating coil 14 is not limited to the method of increasing the output, and the energization rate may be increased, or both the output and the energization rate may be increased. Moreover, the pressure in the main rice cooker 55 including the auxiliary rice cooker 60 in the second unevenness process gradually decreases both the output and the current conduction rate of the induction heating coil 14 as compared with the boiling maintenance process. Decrease and return to atmospheric pressure.

  Next, the control of the microcomputer 71 will be specifically described.

  As shown in FIG. 5, when the rice cooking process is executed, the microcomputer 71 detects whether or not the second (simultaneous) rice cooking process is selected in step S101. And when the 2nd rice cooking process is selected, it progresses to Step S102, and when the 1st (normal) rice cooking process is selected, it progresses to Step S103. In step S102, the solenoid is turned on (energized) to close the on-off valve 33 and the process proceeds to step S103.

  In step S103, a preheating process for adjusting the temperature inside the main rice cooker 55 to a set temperature is executed, and then a temperature raising process for raising the temperature inside the main rice cooker 55 is executed in step S104, followed by a boiling maintaining process in step S105. Execute. These preheating process, temperature raising process, and boiling maintenance process are controlled by the same judgment standard in both the first rice cooking process and the second rice cooking process. In each step, the induction heating coil 14, the trunk heater 16 and the lid heater 26 are controlled based on the temperature sensors 17 and 27 and a timer (timer means) 73 built in the microcomputer 71.

  When the boiling maintenance process is completed by detecting dry-up, it is detected in step S106 whether the second rice cooking process is selected. And when the 1st rice cooking process is selected, it progresses to Step S107, and when the 2nd rice cooking process is selected, it progresses to Step S108.

  In step S107, after performing the 1st uneven process which set the total thermal power of the induction heating coil 14 from the 1st step to the 3rd step as F1, and made the total execution time T1, the rice cooking process was ended and it cooked. Shift to heat treatment to keep the rice at the set temperature.

  In step S108, a second unevenness process is performed in which the total heating power of the induction heating coil 14 is F2 (F2> F1) and the total execution time is T2 (T2 <T1). Next, in step S109, the solenoid is turned off (energization is interrupted) to open the on-off valve 33, the rice cooking process is terminated, and the process proceeds to a heat retaining process.

  Thus, the rice cooker 10 of this embodiment is the 1st rice cooking process under the normal pressure using only the main rice cooker 55, and the 2nd rice cooking under the high pressure using the main rice cooker 55 and the auxiliary rice cooker 60. Processing can be executed. In the second rice cooking process, two types of rice having different preferences (softness) can be cooked at the same time by using the auxiliary rice cooking pot 60. Moreover, the softness of rice is the same, and different types of rice such as white rice and cooked rice can be cooked at the same time. Therefore, convenience in use can be improved.

  Moreover, the 2nd rice cooking process raises the heating amount per unit time from the 1st rice cooking process by making the pressure in the main rice cooking pot 55 higher than the 1st rice cooking process (temperature rising process and boiling maintaining process). Have Therefore, the time for the gelatinized starch on the surface of rice to dissolve in water can be shortened. Therefore, the rice in the main rice cooking pot 55 can be cooked deliciously like the 1st rice cooking process. Further, in the second rice cooking process, more steam is generated than in the first rice cooking process, and the temperature rise temperature of the main rice cooker 55 is also increased. Therefore, the unit time added to the sub rice cooker 60 that heats up later than the main rice cooker 55 The amount of heating per hit can also be increased. Therefore, since the temperature of the auxiliary rice cooking pot 60 can be raised quickly, the rice in the auxiliary rice cooking pot 60 can also be cooked deliciously.

  And in the 2nd rice cooking process, the unevenness execution time T2 is made shorter than the unevenness execution time T1 of the 1st rice cooking process, and it is suppressing that water | moisture content is absorbed by rice. Moreover, since the thermal power F2 is made higher than the thermal power F1 of the 1st unevenness process of a 1st rice cooking process, the water | moisture content absorbed by rice can be discharge | released. Therefore, in the second rice cooking process, which is higher in pressure than the first rice cooking process, the rice in the main rice cooker 55 is softly cooked in the temperature raising process and the boiling maintaining process, but the rice cooked in the second uneven cooking process is cooked. It can be adjusted in the direction of hardening. Therefore, the rice cooked with the main rice cooker 55 can be cooked deliciously with the softness according to the same taste as the 1st rice cooking process.

(Second Embodiment)
FIGS. 6-8 shows the rice cooker 10 of 2nd Embodiment. As shown in FIG. 6, the rice cooker 10 of 2nd Embodiment is a point which set it as the structure which does not provide the on-off valve 33 which comprises an obstruction | occlusion means, and is largely different from 1st Embodiment. The inner lid 29 of the rice cooker 10 is provided with an exhaust hole 75 communicating with the gap 44 between the heat sink 25. In addition, since this rice cooker 10 cannot seal the inside of the main rice cooker 55, the induction heating coil 14 which is a heating means does not function as a pressure | voltage rise means.

  As shown in FIG. 7, the microcomputer 71 includes a first rice cooking process using only the main rice cooker 55 and a second rice cooking process using the main rice cooking pot 55 and the auxiliary rice cooking pot 60, as in the first embodiment. Execute. In addition, the 1st rice cooking process is the same as that of 1st Embodiment. Moreover, a 2nd rice cooking process is similarly performed by the same judgment standard as a 1st rice cooking process in a preheating process and a boiling maintenance process.

  Referring to the rice cooking power in FIG. 7, in the second rice cooking process, the heating power of the induction heating coil 14 is increased from the first temperature raising process of the first rice cooking process in the second temperature raising process. The heating amount per unit time to be added to the auxiliary rice cooking pot 60 is increased from the first rice cooking process. Here, in order to increase the heating power of the induction heating coil 14, there are a method of increasing the output and a method of increasing the current supply rate. In the present embodiment, the output P2 of the induction heating coil 14 in the second temperature raising step is set higher than the output P1 of the induction heating coil 14 in the first temperature raising step. You may increase both rates. Moreover, in this embodiment, although the thermal power of both the 1st step and 2nd step which comprise a pressure | voltage rise process is raised, you may raise only the thermal power of any one step.

  Here, in the rice cooker 10 in which the inside of the main rice cooker 55 including the auxiliary rice cooker 60 is always in communication with the atmosphere via the exhaust passage 32, the steam in the main rice cooker 55 is easily discharged out of the rice cooker 10. Therefore, when the heating power F2 of the induction heating coil 14 is increased from the first rice cooking process in the second rice cooking process, it becomes faster than the first rice cooking process that the water in the main rice cooking pot 55 is lost. As a result, in the second rice cooking process, the amount of water absorbed by rice is reduced, so that the rice is harder than the first rice cooking process. Therefore, in the second rice cooking process, the rice is adjusted to be soft in the unevenness process so that the softness of the cooked rice is substantially the same as the first rice cooking process.

  As shown in the rice cooking power in FIG. 7, in the second unevenness process of the second rice cooking process, the total execution time T2 is longer than the total execution time T1 of the first unevenness process of the first rice cooking process (T2> T1). And promotes the absorption of moisture by rice. Further, the total heating power F2 of the induction heating coil 14 is lower than the total heating power F2 of the first unevenness process (F2 <F1), thereby suppressing the release of moisture absorbed by rice. The method for increasing the heating power of the induction heating coil 14 is the same as described above, and the output is reduced in this embodiment.

  Next, the control of the microcomputer 71 of the second embodiment will be specifically described.

  As shown in FIG. 8, when the rice cooking process is executed, the microcomputer 71 executes the common preheating process in the first rice cooking process and the second rice cooking process in step S201, and then in step S202, the second rice cooking process. It is detected whether or not is selected. And when the 1st (normal) rice cooking process is selected, it progresses to Step S203, performs the 1st temperature rising process of the 1st rice cooking process, and progresses to Step S205. Moreover, when the 2nd (simultaneous) rice cooking process is selected, it progresses to step S204, the 2nd temperature rising process of a 2nd rice cooking process is performed, and it progresses to step S205.

  In step S205, after performing a common boiling maintenance process by 1st rice cooking process and 2nd rice cooking process, it is detected by step S206 whether the 2nd rice cooking process is selected. And when the 1st rice cooking process is selected, after progressing to Step S207 and performing the 1st unevenness process of the 1st rice cooking process, the rice cooking process is ended and it shifts to a heat retention process. Moreover, when the 2nd rice cooking process is selected, after progressing to step S208 and performing the 2nd unevenness process of a 2nd rice cooking process, a rice cooking process is complete | finished and it transfers to a heat retention process.

  In the second embodiment, it is possible to obtain the same operation and effect as the first embodiment. That is, by performing the second rice cooking process using the main rice cooker 55 and the auxiliary rice cooker 60, two types of rice having different preferences can be cooked at the same time, so that convenience in use can be improved. And in the 2nd rice cooking process, since the heating amount per unit time is raised by raising a thermal power from a 1st rice cooking process at a pressure | voltage rise process, the heating amount added to the auxiliary rice cooking pan 60 is fully securable. Therefore, the rice in the main rice cooker 55 and the rice in the auxiliary rice cooker 60 can be cooked deliciously.

  Moreover, in the second rice cooking process, the unevenness execution time T2 is made longer than the unevenness execution time T1 of the first rice cooking process, and the rice is promoted to absorb moisture. Moreover, since the thermal power F2 is made lower than the thermal power F1 of the 1st unevenness process of a 1st rice cooking process, discharge | release of the water | moisture content absorbed by rice can be suppressed. Therefore, the rice cooked with the main rice cooking pot 55 can be adjusted to the softness according to the same taste as the 1st rice cooking process, and can be cooked deliciously.

(Third embodiment)
FIG.9 and FIG.10 shows control by the microcomputer 71 of the rice cooker 10 of 3rd Embodiment. The rice cooker 10 of this 3rd Embodiment is the structure similar to 1st Embodiment which has arrange | positioned the on-off valve 33 shown to FIG. 1A. And in this 3rd Embodiment, the point which was made to adjust the softness of the cooked rice by sealing the inside of the main rice cooker 55 with the on-off valve 33 in the 2nd unevenness process of the 2nd rice cooking process, This is different from the second embodiment.

  Specifically, as shown in FIG. 9, the microcomputer 71, similarly to each embodiment, performs the first rice cooking process using only the main rice cooker 55 and the second rice cooking using the main rice cooker 55 and the auxiliary rice cooker 60. Process. The 1st rice cooking process is the same as that of 1st Embodiment and 2nd Embodiment. In the second rice cooking process, the preheating process, the boiling maintaining process, and the unevenness process are executed in the same manner as in the first cooking process.

  In the second rice cooking process, the heating power of the induction heating coil 14 is increased in the second temperature raising process from the first temperature raising process of the first rice cooking process, so that per unit time to be added to the main rice cooking pot 55 and the auxiliary rice cooking pot 60. The heating amount is increased from the first rice cooking process. As described above, in the boiling maintaining process and the unevenness process, the induction heating coil 14 is controlled similarly to the first rice cooking process. However, in the second rice cooking process, when the boiling maintenance process in which a large amount of steam is generated is completed, the main rice cooker 55 including the auxiliary rice cooker 60 is sealed by closing the on-off valve 33. Referring to the pressure in the pan of FIG. 9, the internal pressure rises due to the steam in the main rice cooker 55 and the auxiliary rice cooker 60 in the unevenness process of the second rice cooking process. Accordingly, referring to the temperature of the main rice cooker in FIG. 9, the temperature of the main rice cooker 55 can be raised to a temperature higher than that of the first rice cooking process in the unevenness process of the second rice cooking process.

  Next, the control of the microcomputer 71 of the third embodiment will be specifically described.

  As shown in FIG. 10, when the rice cooking process is executed, the microcomputer 71 executes the common preheating process in the first rice cooking process and the second rice cooking process in step S301, and then in step S302, the second rice cooking process. It is detected whether or not is selected. And when the 1st (normal) rice cooking process is selected, it progresses to Step S303, performs the 1st temperature rising process of the 1st rice cooking process, and progresses to Step S305. Moreover, when the 2nd (simultaneous) rice cooking process is selected, it progresses to step S304, the 2nd temperature rising process of a 2nd rice cooking process is performed, and it progresses to step S305.

  In step S305, after performing a common boiling maintenance process by the 1st rice cooking process and the 2nd rice cooking process, it is detected by step S306 whether the 2nd rice cooking process is selected. If the second rice cooking process is selected, the process proceeds to step S307, and the solenoid is turned on (energized) to close the on-off valve 33 and the process proceeds to step S308. Moreover, when the 1st rice cooking process is selected, it progresses to step S308 as it is.

  In step S308, after performing the common unevenness process by the 1st rice cooking process and the 2nd rice cooking process, it is detected by step S309 whether the 2nd rice cooking process is selected. And when the 2nd rice cooking process is selected, it progresses to Step S310, and after opening the opening-and-closing valve 33 by turning off the solenoid (cutting off energization), the rice cooking process is ended and it shifts to a heat retention process. . Moreover, when the 1st rice cooking process is selected, the rice cooking process is complete | finished as it is and it transfers to a heat retention process.

  In the third embodiment thus configured, the same operations and effects as in the second embodiment can be obtained. In particular, in the unevenness process of the second rice cooking process, by closing the on-off valve 33, the steam in the main rice cooker 55 and the auxiliary rice cooker 60 is prevented from being discharged out of the rice cooker 10 through the exhaust passage 32. doing. Moreover, the temperature and pressure in the main rice cooker 55 including the auxiliary rice cooker 60 are raised from the first rice cooking process. Thereby, it can accelerate | stimulate so that rice may absorb a water | moisture content, and can adjust to the direction in which the cooked rice becomes soft. Therefore, the rice cooked with the main rice cooker 55 can be cooked deliciously with the softness according to the same taste as the 1st rice cooking process.

(Other embodiments)
Incidentally, rice cooker 10 of the present invention includes a first cooking process using only the main cooking pot 55 is capable of executing a second cooking process using the main cooking pot 55 and the auxiliary cooking pan 60, the second cooking process The heating amount per unit time added to the main rice cooking pot 55 and the auxiliary rice cooking pot 60 is higher than that of the first rice cooking process, and other configurations can be variously changed.

  For example, in the first embodiment, the main rice cooker 55 is heated by the induction heating coil 14 so as to boost the pressure in the main rice cooker 55 with the steam generated in the main rice cooker 55, as shown in FIG. Thus, you may use the pressurization pump 76 arrange | positioned in the rice cooker 10. FIG. In this example, the pressurizing pump 76 that is a pressurizing unit is disposed inside the lid body 20. The pressurizing pump 76 is disposed in the lid main body 21 so as to penetrate the heat radiating plate 25, and a packing 77 that is pressed against the upper surface of the inner lid 29 is disposed in a lower portion that penetrates the pressure pump 76. The inner lid 29 is formed with a vent hole 78 communicating with the main rice cooker 55 (sub-rice cooker 60) so as to correspond to the packing 77. The rice cooker 10 is preferably provided with pressure detection means (for example, a diaphragm gauge) for detecting the pressure in the main rice cooker 55 including the auxiliary rice cooker 60 inside the lid 20. If it does in this way, the inside of the main rice cooker 55 including the auxiliary rice cooker 60 will be pressure | voltage-rised by the desired step of a desired process, and the heating amount per unit time can be raised. Moreover, since it is possible to increase / decrease the pressure in the main rice cooking pot 55 and to adjust the increase / decrease in the heating amount per unit time, the second rice cooking object in the auxiliary rice cooking pot 60 is surely cooked. be able to.

  Moreover, the pressure (heating amount) adjustment in the main rice cooker 55 including the sub rice cooker 60 is not restricted to the pressurization pump 76, You may use the pressure regulation valve 80 as shown in FIG. The pressure regulating valve 80 includes a valve seat 81, a valve seat cover 83, a valve body 84, and an operation receiving member 85, and is disposed on the inner lid 29 like the on-off valve 33. The pressure regulating valve 80 is provided in the valve seat 81 by pressing the operation receiving member 85 downward in FIG. 12 by a stepping motor (not shown) so that the valve body 84 is lowered against the urging force of the first urging spring 86. The exhaust hole 82 is closed. By adjusting the lowering amount of the operation receiving member 85, the compression amount of the second urging spring 87 between the valve body 84 and the operation receiving member 85 is adjusted, and the closing force (pressure increase) of the exhaust hole 82 by the valve body 84 is adjusted. Possible pressure) is adjusted. When the pressure in the main rice cooker 55 including the auxiliary rice cooker 60 exceeds the allowable pressure due to the urging force of the second urging spring 87, the valve body 84 is separated from the exhaust hole 82 by the vapor pressure in the main rice cooker 55. Thus, the steam can be exhausted through the exhaust passage 32 and adjusted to the set pressure in the main rice cooker 55.

  Moreover, in 1st Embodiment, the inside of the main rice cooker 55 was pressure | voltage-risen from the 2nd step of the pressure | voltage rise process to the unevenness process by closing the on-off valve 33 simultaneously with the start (preheating process) of the 2nd rice cooking process. However, the opening / closing timing of the on-off valve 33 can be changed as desired. That is, the step of raising the heating amount per unit time from the first rice cooking process may be at least a part of at least one of the temperature raising step and the boiling maintaining step.

  Moreover, in 1st Embodiment, in order to adjust the softness of the rice of the main rice cooking pot 55, in the 2nd unevenness process, execution time T2 is made shorter than execution time T1 of the 1st unevenness process, and thermal power F2 is made into Although the heating power T1 of the first unevenness process is increased, only one of the execution time T and the thermal power F of the second unevenness process may be changed.

  Moreover, in 2nd Embodiment and 3rd Embodiment, in order to raise the heating amount per unit time of a 2nd rice cooking process from the heating amount of a 1st rice cooking process, although the thermal power was raised in the temperature rising process, the boiling maintenance process The heating power may be increased by either, and the heating power may be increased in both the temperature raising step and the boiling maintaining step. Of course, the heating power may be increased by at least a part of at least one of the temperature raising step and the boiling maintaining step.

  Moreover, in 2nd Embodiment, in order to adjust the softness of the rice of the main rice cooking pot 55, in the 2nd unevenness process, execution time T2 is made longer than execution time T1 of the 1st unevenness process, and thermal power F2 is made into Although lower than the thermal power T1 of the first unevenness process, only one of the execution time T and the thermal power F of the second unevenness process may be changed. Further, in addition to the rice cooker 10 in which the on-off valve 33 shown in FIG. 1 is arranged, the rice cooker 10 in which the pressurizing pump 76 is arranged in addition to the on-off valve 33 shown in FIG. 11, or the on-off valve 33 shown in FIG. Using the rice cooker 10 in which the pressure valve 80 is arranged, as in the third embodiment, the execution time T and / or the thermal power F of the second unevenness process are adjusted in a state where the main rice cooker 55 including the auxiliary rice cooker 60 is sealed. May be.

  Moreover, in the 1st rice cooking process, it cooked without making the pressure in the main rice cooking pot 55 higher than an atmospheric pressure, but you may make it higher than an atmospheric pressure also in a 1st rice cooking process. In this case, in the second rice cooking process, the heating amount per unit time applied to the main rice cooking pot 55 and the auxiliary rice cooking pot 60 is increased by increasing the pressure to a pressure higher than that of the first rice cooking process. Moreover, in 1st Embodiment to 3rd Embodiment, although the softness of the rice of the main rice cooking pot 55 was adjusted in the unevenness process of the 2nd rice cooking process, this adjustment method can be variously changed. Moreover, various changes are also possible for the configuration of the rice cooker 10 that executes the first rice cooking process and the second rice cooking process.

  For example, the ventilation part 64 of the auxiliary rice cooker 60 is not limited to the notch provided in the flange part 63 but may be a hole provided in the flange part 63 or a hole provided in the outer peripheral wall 56. When providing a hole in the outer peripheral wall 56, it is preferable to provide it above the water level line formed in the auxiliary rice cooker 60. Further, the auxiliary rice cooker 60 is arranged so that the flange 63 is hooked on the locking step 59 and suspended from the main rice cooker 55, but a bar-like leg is provided at the bottom, and the bottom of the main rice cooker 55 is provided. It may be placed. In addition, the auxiliary rice cooker 60 is not limited to the configuration arranged directly in the main rice cooker 55, and is detachably attached to the inner lid 29 and closed in the main rice cooker 55 by closing the lid 20. May be. Moreover, the heating means for heating the main rice cooker 55 is not limited to the induction heating coil 14 and may be directly heated by a heater.

DESCRIPTION OF SYMBOLS 10 ... Rice cooker 12 ... Rice cooker main body 13 ... Pan accommodating part 14 ... Induction heating coil (heating means, pressure | voltage rise means)
DESCRIPTION OF SYMBOLS 15 ... Ferrite core 16 ... Body heater 17 ... Pan temperature sensor 20 ... Lid body 21 ... Lid body 22 ... Lid cover 23 ... Lock member 24 ... Operation member 25 ... Radiation plate 26 ... Lid heater 27 ... Lid temperature sensor 28 ... Inner lid Packing 29 ... Inner lid 30 ... Pan seal member 32 ... Exhaust passage 33 ... Open / close valve (blocking means)
34 ... Valve seat 35 ... Exhaust hole 36 ... Housing cover 37 ... Communication port 38 ... Ball member 39 ... Valve housing part 40 ... Packing 41 ... Packing 42 ... Solenoid 43 ... Rod 44 ... Cavity 45 ... Communication part 46 ... Packing 47 ... Packing 48 ... Steam port unit 49 ... Lower case 50 ... Connection part 51 ... Upper case 52 ... Discharge port 55 ... Main rice cooker (first rice cooker)
56 ... Outer peripheral wall 57 ... Opening 58 ... Flange 59 ... Locking step 60 ... Secondary rice cooker (second rice cooker)
61 ... Outer peripheral wall 62 ... Opening 63 ... Flange part 64 ... Ventilation part 65 ... Holding part 66 ... Operation panel part 67 ... Operation board 68 ... Switch 69 ... Liquid crystal panel 70 ... Control board 71 ... Microcomputer (control means)
72 ... ROM
73 ... Timer 75 ... Exhaust hole 76 ... Pressure pump 77 ... Packing 78 ... Ventilation hole 80 ... Pressure control valve 81 ... Valve seat 82 ... Exhaust hole 83 ... Valve seat cover 84 ... Valve body 85 ... Operation receiving member 86 ... First attachment Spring 87: Second bias spring

Claims (8)

A first cooking rice pot in which the first cooking object is accommodated;
Heating means for heating the first rice cooker;
Control means for controlling the heating means,
A second rice cooker is disposed in the first rice cooker in a state in which the second rice cooker is accommodated, and indirectly heated through the first rice cooker,
Said control means, said a first cooking process for cooking only the first cooking object in the first cooking pot, said second cooking of the first cooking object and the second cooking pot of the first cooking pot A second rice cooking process for cooking the object,
The said 2nd rice cooking process is a rice cooker which has the step which raised the heating amount per unit time added to the said 1st rice cooking pot and the said 2nd rice cooking pot from the said 1st rice cooking process. An opening of the first rice cooker can be closed, and an exhaust hole that allows communication between the inside and the outside of the first rice cooker and a closing unit that closes the exhaust hole so as to be openable are provided. With
A pressure increasing means capable of increasing the pressure in the first rice cooking pot including the second rice cooking pot to a pressure higher than the atmospheric pressure;
The second cooking process is to increase the heating amount per the first cooking within By boosting the pot, the unit to be added to the first cooking pot and the second cooking pot time by said boosting means, according to claim 1 Rice cooker as described in.   3. The rice cooker according to claim 2, wherein, in the second rice cooking process, an execution time of the steaming step of steaming the first rice cooking object and the second rice cooking object is shorter than the first rice cooking process.   In the said 2nd rice cooking process, the thermal power by the said heating means of the uneven process which steams the said 1st rice cooking object and the said 2nd rice cooking object is made higher than the said 1st rice cooking process. Rice cooker as described in.   2. The rice cooker according to claim 1, wherein in the second rice cooking process, the heating amount per unit time applied to the first rice cooking pot and the second rice cooking pot is increased by increasing the heating power by the heating means.   6. The rice cooker according to claim 5, wherein, in the second rice cooking process, an execution time of the steaming step of steaming the first rice cooking object and the second rice cooking object is longer than that of the first rice cooking process.   In the said 2nd rice cooking process, the thermal power by the said heating means of the uneven process which steams the said 1st rice cooking object and the said 2nd rice cooking object is made lower than the said 1st rice cooking process. Rice cooker as described in. An opening of the first rice cooker can be closed, and an exhaust hole that allows communication between the inside and the outside of the first rice cooker and a closing means that closes the exhaust hole so as to be openable are provided. ,
The said 2nd rice cooking process WHEREIN: The inside of the said 1st rice cooking pot is obstruct | occluded by the said obstruction | occlusion means at the uneven process which steams the said 1st rice cooking object and the said 2nd rice cooking object. The rice cooker of any one of.

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