JP4760525B2 - rice cooker - Google Patents

Description

  The present invention relates to a rice cooker using pressure.

  The conventional rice cooker removes excess water remaining in the pot, the soaking process that absorbs water into the polished rice, the cooking process that heats the absorbed polished rice to gelatinize the starch in the rice, and the boiling maintenance process. In addition, the steaming process that further promotes gelatinization is performed to cook rice. In the sense that the pressure in the pan is cooked at almost atmospheric pressure, hereinafter, it is also referred to as normal rice cooking.

  Cooking rice is adding water to polished rice with a moisture content of around 15%, heating it, and finishing it into rice with a moisture content of around 65% that can be digested by the human stomach. Moreover, it is gelatinizing starch which occupies about 80% of polished rice. In the first place, the starch of rice has a structure in which amylose and amylopectin are tightly bound, so gelatinization does not take place just by giving water, but when the absorbed rice is heated, the molecular movement of amylose and amylopectin is active. It is said that the binding of amylose and amylopectin breaks down, and water molecules enter between them, causing gelatinization.

  However, cooking rice such as brown rice, germinated brown rice, and milled rice that are richer in nutrients than polished rice requires about twice as long cooking time as the above-mentioned regular cooking rice. As is known in Patent Documents 1 and 2, the cooking process of cooking rice is performed at a pressure of 1 atm or higher and cooking at 100 to 110 ° C. In this rice cooking process, rice is also referred to as pressure rice cooking in the sense that it is placed at a higher temperature and pressure than normal rice and a large pressure is applied, and is distinguished from normal rice cooking.

In order to perform pressure rice cooking, pressure adjustment means to control the pressure in the pan is necessary, but by operating this, both normal rice cooking and pressure rice cooking can be performed, and the rice cooker that controls the pressure in multiple stages There is also. In these, by switching the pressure, the polished rice can be cooked into rice with different textures such as stickiness and elasticity, as well as the difference in softness.

Each time the rice cooking process as described above is performed, the user needs to remove the inner lid from the lid, wash it, and attach it to the lid again. For example, Patent Document 3 makes it easy to remove the inner lid. Patent Document 3 discloses a configuration in which an operation button exposed to the outside of the lid is operated, the inner lid disengaging means is operated, and the inner lid is stopped at a certain inclination angle without dropping from the lid. ing.
Japanese Patent No. 2722781 Japanese Patent No. 3349665 JP 2002-95580 A

  However, in the conventional configuration, the inner lid can be easily removed. However, when the inner lid is attached to the lid, when the lid is closed, the sealing performance of the pot and the lid packing is ensured, and the steam leaks from the inside of the pot. Therefore, it was necessary for the user to always set the inner lid at a predetermined position of the lid so that the predetermined rice cooking performance could be exhibited. In particular, in pressure rice cooking, the pressure in the pan at the time of rice cooking exceeds 1 atm and reaches 1.5 atm. During cooking, an internal pressure exceeding 100 kg is generated in the entire inner lid. In order to ensure the sealing performance between the pan and the lid, particularly the sealing between the inner lid and the pan detachably provided on the lid under a high temperature and high pressure condition, and exhibit the predetermined rice cooking performance, Each of the inner lid, the lid, and the pan was accurately stored in a predetermined position, and the seal member provided on the inner lid was appropriately in close contact with the pan, so that it was necessary to prevent leakage of steam generated in the pan.

  Moreover, since the inside of the pan was at high pressure during cooking, it was necessary to increase the strength of the inner lid. For this reason, it is common to configure the inner lid with a stainless steel plate with a large plate thickness compared to that for normal rice cooking that is not pressure cooked, and the inner lid for pressure rice cooked in plate thickness and mass compared to that of normal rice cooking Often about twice as much. That is, the inner lid becomes heavy, and the burden on the user in the operation of setting the removable inner lid on the lid is large. Furthermore, it was heavy and difficult to care for, such as when it was removed after cooking and washed or dried.

  Moreover, since the inside of the pan during cooking is high temperature, the temperature of the inner lid is higher than that for cooking rice, and the heat capacity of the inner lid is increased because the plate thickness is large. For this reason, compared to the inner lid of a rice cooker that normally cooks rice, there is a problem that the temperature of the inner lid does not decrease in a short time even if the power of the main body is turned off immediately after rice cooking or after the heat retention.

  Furthermore, if the lid is closed without the inner lid being attached to the lid with the inner lid tilted, the inner lid may fall from the lid or be attached to an inappropriate position while the lid is being closed. is there. In such a case, in the pressure rice cooking in which the inside of the pan is set to a high temperature and high pressure, steam leakage occurs from the seal portion formed by the pan and the lid packing, and there is a possibility that the predetermined rice cooking performance cannot be exhibited.

  An object of the present invention is to solve the above-described conventional problems, and it is an object of the present invention to reliably attach the inner lid to the lid, stabilize the rice cooking performance, and reduce the operation burden.

  The rice cooker of the present invention comprises a pan, heating means for heating the pan, a main body for storing the pan, a lid covering the opening of the pan, an inner lid attached to the lid, and the inner lid. Inner lid locking means that is detachably held in a state of being locked at a predetermined angle with respect to the lid, pressure adjusting means that is provided on the inner lid and adjusts the pressure in the pan, and the inner lid is An inner lid mounting means for mounting at a predetermined position of the lid, and guiding the rotational movement of the inner lid so as to reach the predetermined position when the inner lid rotates toward the lid with the inner lid locking means as a fulcrum. An inner lid guiding means, and the inner lid locking means has a non-slip portion that prevents the inner lid from slipping in the removing direction, and when the inner lid is closed, The inner lid is held in a locked state until the lid is closed.

  When the inner lid is attached to the lid, the inner lid is held in a locked state with an inclination angle with respect to the lid by the inner lid locking means. The lid is securely held in a locked state on the lid. For this reason, when the lid with the inner lid held in the locked state is closed, the inner lid rotates together with the lid without detaching from the inner lid locking means, and when hitting the pan, the inner lid is moved to the lid side with the locking means as a fulcrum. It rotates and is guided to a predetermined position of the lid by the inner lid guiding means during the rotational movement, and is attached to the lid by the inner lid attaching means. At the same time, since the attachment is reliable, the predetermined rice cooking performance can be stably exhibited while adjusting the pressure in the pan with the pressure adjusting means.

  Also, when removing the inner lid after rice cooking, etc., if the inner lid mounting means is released, the inner lid will rotate and lock with the inner lid locking means as a fulcrum, but it has a non-slip part Even if it is a heavy inner lid, it can be reliably brought into a locked state without detaching from the inner lid locking means.

Further , the pressure adjusting means is disposed between the inner lid and the lid, and the inner lid in the mounted state is configured to open 90 degrees or more with respect to the main body, and the inner lid is used as the locking means in the opened state of the lid. When attached, it rotates and moves to the lid side with the weight of the pressure adjusting means.

  As preparation work for rice cooking, the lid is opened 90 degrees or more with respect to the main body, a pan containing rice and water is stored in the main body, and the inner lid is locked to the lid in a substantially vertical direction by the inner lid locking means Let At this time, since the inner lid is provided with pressure adjusting means on the lid side, the inner lid rotates to the lid side due to the weight of the pressure adjusting means, and the inner lid guide means moves to the inner lid mounting means. Guided and mounted at a predetermined position. Since the inner lid and the pan are arranged at predetermined positions, sealing of the inner lid and the pan can be surely performed, and the rice cooking performance by pressure rice cooking at high temperature and high pressure is stabilized as well as normal rice cooking.

And an inner lid temperature detecting means for detecting the temperature of the inner lid; and a releasing means for releasing the mounting by the inner lid mounting means and inclining the inner lid to bring it into a locked state. A first release means control section for stopping the release of the inner lid attachment by the inner lid attachment means based on the temperature of the inner lid.

  It has an inner lid temperature detecting means for detecting the temperature of the inner lid, and a releasing means control section for stopping the operation of the releasing means for releasing the inner lid from the inner lid mounting means, and the temperature of the inner lid by interlocking them. Since the inner lid can be prevented from being opened when the temperature is high, the user can be prevented from accidentally holding the hot inner lid and being burned. A rice cooker usually has a control means for controlling the pan heating means so that the temperature of the pan and the cooked food changes appropriately by the pan temperature detection means and the inner lid temperature detection means. Based on this, the operation of the release means control unit can be controlled. The same applies to a mechanism in which the release means control unit controls the opening of the inner lid in conjunction with the inner lid temperature.

The apparatus further comprises a lid state detecting means for detecting an open state of the lid, and the release means has a second release means control section that automatically opens the inner lid when the cover is open for a predetermined time or longer. To do.

  The lid state detection means detects that the lid is in an open state, and the control means for controlling the operation of the rice cooker is a second release means control unit when the open state of the lid is longer than a predetermined time set in advance. By opening the inner lid, the inner lid is brought into a locked state, both surfaces of the inner lid are exposed, and the temperature can be lowered in a short time.

In addition , there is provided release means for releasing the attachment by the inner lid attachment means and inclining the inner lid so as to be in a locked state, and when the cover is opened after stopping the heat retention, the release means automatically opens the inner lid. And

  The user opens the lid after the thermal stop, and takes care such as taking out the pot and inner lid and washing. That is, when the lid is opened after the heat retention is stopped, the inner lid is automatically released from the lid by the releasing means, so that the inner lid can be easily removed.

  According to the rice cooker of the present invention, rice cooking performance can be stabilized while simplifying the operation of the inner lid.

  The first invention includes a pan, a heating means for heating the pan, a main body for storing the pan, a lid covering the opening of the pan, an inner lid attached to the lid, and the inner lid. Inner lid locking means that is detachably held in a state of being locked at a predetermined angle with respect to the lid, pressure adjusting means that is provided on the inner lid and adjusts the pressure in the pan, and the inner lid is the lid An inner lid mounting means for mounting at a predetermined position, and an inner guide for rotational movement of the inner lid so as to reach the predetermined position when the inner lid rotates toward the lid with the inner lid locking means as a fulcrum. A lid guide means, wherein the inner lid locking means has a non-slip portion that prevents the inner lid from slipping in the direction of removal, and the lid is closed when the inner lid is closed when the inner lid is closed. The inner lid is held in a locked state until is closed.

  With these configurations, when the inner lid is attached to the lid, the inner lid is held in the locked state with an inclination angle with respect to the lid by the inner lid locking means. The inner lid is securely held in the locked state by the anti-slip portion. For this reason, when the lid with the inner lid held in the locked state is closed, the inner lid rotates together with the lid without detaching from the inner lid locking means, and when hitting the pan, the inner lid is moved to the lid side with the locking means as a fulcrum. It rotates and is guided to a predetermined position of the lid by the inner lid guiding means during the rotational movement, and is attached to the lid by the inner lid attaching means. At the same time, since the attachment is reliable, the predetermined rice cooking performance can be stably exhibited while adjusting the pressure in the pan with the pressure adjusting means.

  Also, when removing the inner lid after rice cooking, etc., if the inner lid mounting means is released, the inner lid will rotate and lock with the inner lid locking means as a fulcrum, but it has a non-slip part Even if it is a heavy inner lid, it can be reliably brought into a locked state without detaching from the inner lid locking means.

  Even if the user does not store the inner lid in the lid as his own operation procedure, the user simply attaches the inner lid to the lid and places the inner lid in a predetermined position with respect to the lid. The burden on the user's operation can be reduced.

Further , the pressure adjusting means is disposed between the inner lid and the lid, and the inner lid in the mounted state is configured to open 90 degrees or more with respect to the main body, and the inner lid is used as the locking means in the opened state of the lid. When attached, it rotates and moves to the lid side with the weight of the pressure adjusting means.

  As preparation work for rice cooking, the lid is opened 90 degrees or more with respect to the main body, a pan containing rice and water is stored in the main body, and the inner lid is locked to the lid in a substantially vertical direction by the inner lid locking means Let At this time, since the inner lid is provided with pressure adjusting means on the lid side, the inner lid rotates to the lid side due to the weight of the pressure adjusting means, and the inner lid guide means moves to the inner lid mounting means. Guided and mounted at a predetermined position. Since the inner lid and the pan are arranged at predetermined positions, sealing of the inner lid and the pan can be surely performed, and the rice cooking performance by pressure rice cooking at high temperature and high pressure is stabilized as well as normal rice cooking.

  Even if the user does not store the inner lid in the lid as an operation procedure, the user simply attaches the inner lid to the inner lid locking means, and the inner lid is attached to the lid. The burden on the user's operation of mounting at a predetermined position can be reduced.

The second invention includes an inner lid temperature detecting means for detecting the temperature of the inner lid, and a releasing means for releasing the mounting by the inner lid mounting means and inclining the inner lid to make it locked. Has a first release means control unit for stopping the release of the inner lid by the inner lid attachment means based on the temperature of the inner lid.

  It has an inner lid temperature detecting means for detecting the temperature of the inner lid, and a releasing means control section for stopping the operation of the releasing means for releasing the inner lid from the inner lid mounting means, and the temperature of the inner lid by interlocking them. Since the inner lid can be prevented from being opened when the temperature is high, the user can be prevented from accidentally holding the hot inner lid and being burned. A rice cooker usually has a control means for controlling the pan heating means so that the temperature of the pan and the cooked food changes appropriately by the pan temperature detection means and the inner lid temperature detection means. Based on this, the operation of the release means control unit can be controlled. The same applies to a mechanism in which the release means control unit controls the opening of the inner lid in conjunction with the inner lid temperature.

According to a third aspect of the present invention, there is provided a lid state detecting means for detecting the open state of the lid, and the release means has a second release means control section for automatically opening the inner lid when the lid open state continues for a predetermined time or more. It is characterized by that.

  The lid state detection means detects that the lid is in an open state, and the control means for controlling the operation of the rice cooker is a second release means control unit when the open state of the lid is longer than a predetermined time set in advance. By opening the inner lid, the inner lid is brought into a locked state, both surfaces of the inner lid are exposed, and the temperature can be lowered in a short time.

According to a fourth aspect of the present invention, there is provided release means for releasing the mounting by the inner lid mounting means and inclining the inner lid so as to be in the locked state. When the lid is opened after the heat insulation is stopped, the release means automatically opens the inner lid. It is characterized by doing.

  The user opens the lid after the thermal stop, and takes care such as taking out the pot and inner lid and washing. That is, when the lid is opened after the heat retention is stopped, the inner lid is automatically released from the lid by the releasing means, so that the inner lid can be easily removed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 is a cross-sectional view of a main body of a rice cooker according to Embodiment 1 of the present invention. The main body 16 of the rice cooker has a pan 1 that detachably accommodates an object to be cooked, such as rice or water, in a detachable manner, and the lid 4 that covers the upper surface of the main body 16 of the rice cooker and the opening of the pan 1 can be opened and closed. Has on top.

  The pan 1 is heated by a pan heating means 2 such as a heating coil provided on the bottom surface of the pan 1 and a pan side heating means 3 provided on the side surface. The lid hinge 5 supports the lid 4 at one end of the main body 16, and the lid 4 rotates around the lid hinge 5. The lid lock 6 fixes the lid 4 to the main body 16 at the other end of the main body 16. An inner lid 7 made of a metal material is attached to the lid 4. With the lid 4 closed, the inner lid 7 covers the opening of the pan 1, and the steam hole 7 a that discharges the steam in the pan 1, and a loop-shaped packing that prevents outflow of steam and moisture in the pan 1 7b.

  FIG. 2 is a cross-sectional view of the state where the inner lid is locked to the opened lid of the rice cooker according to Embodiment 1 of the present invention. As shown in FIG. 2, the lid 4 is provided with inner lid locking means 8 that holds the inner lid 7 in a state of being tilted at an angle α with respect to the lid 4 so as to be detachably locked. 7 rotates in the direction of arrow B or in the opposite direction with the inner lid locking means 8 as a fulcrum. Further, the lid 4 is provided with an inner lid mounting means 9 for detachably mounting the inner lid 7 at a predetermined position where the packing 7b is in close contact with the pan 1 when the lid 4 is closed. Further, the lid 4 is provided with an inner lid heating means 10 such as a heating coil for induction heating the inner lid 7.

  The pan temperature detecting means 11 is provided at the bottom of the pan 1 and detects the temperature of the pan 1. The inner lid temperature detection means 12 detects the temperature of the inner lid 7. The pressure adjustment means 13 moves the pressure hole 7a which opens the steam hole 7a by moving the pressure hole 13a which discharges | emits the vapor | steam in the pan 1 provided in the inner lid 7, and the spherical valve body. It is comprised by the means 13b and the pressure detection means 13c which detects the pressure in the pan 1, and is provided in the inner lid 7 between the inner lid 7 and the lid 4. Further, by closing the steam hole 7 a and filling the pot 1 with steam, the pressure in the pot 1 is set to atmospheric pressure or higher, the steam hole 7 a is opened, and the second steam provided in the steam hole 7 a and the lid 4. By discharging the steam in the pan 1 to the outside of the machine through the steam passage constituted by the holes 14, the pressure in the pan 1 is made equal to the atmospheric pressure.

  The control unit 15 includes a heating unit control unit 15a and a temperature measurement control unit 15b, and a signal input by the input operation unit 17 provided on the front surface of the main body 16 of the rice cooker and a storage unit (not shown). The rice cooking process is executed based on the stored values such as the predetermined time for performing the water immersion process, the temperature increase rate in the cooking process, and the pressure value in each process of rice cooking. In the rice cooking step, the heating means control unit 15a controls the pot heating means 2, the pot side surface heating means 3 and the inner lid heating means 10 based on the detection signals of the pot temperature detecting means 11 and the inner lid temperature detecting means 12.

  FIG. 3 is an enlarged cross-sectional view showing the inner lid locking means of the rice cooker in Embodiment 1 of the present invention. The inner lid 7 has an inner lid locking portion 20 attached to the inner lid locking means 8 at the rear end thereof, and the inner lid 7 is inserted into the inner lid locking means 8 from the direction of arrow A, A locking portion slip prevention portion 22 projecting downward provided in the inner lid locking portion 20 of the inner lid 7 is fitted into the inner lid locking hole 8 a provided in the inner lid locking means 8. At the same time, an operation of the inner lid 7 to rotate in the direction opposite to the arrow B by its own weight with the inner lid locking means 8 as a fulcrum is provided on the inner lid locking portion 20 so as to protrude upward. Is stopped by engaging with the inner lid 7, and the inner lid 7 is engaged with the lid 4 at an inclination angle α. Even when the locking portion detent portion 21 is unlocked, the locking portion non-slip portion 22 is fitted in the inner lid locking hole 8a. And slipping in the opposite direction can be prevented.

  As described above, the inner lid locking hole 8a and the locking portion non-slip portion 22 constitute a non-slip portion that prevents the inner lid 7 from slipping in the removing direction.

  In addition, at least a part of the inner lid locking hole 8a penetrates, and water drops dripped from the inner lid 7 and the like flow into the inner lid locking means 8 without staying, so that it is easy to dry and maintains cleanliness. It is a structure that is easy to do.

  In addition, a hole portion may be provided in the inner lid 7 and a protrusion-shaped non-slip portion that fits into the hole portion may be provided in the inner lid locking means 8 so that the inner lid 7 can be prevented from slipping in the removing direction. If it is.

  FIG. 4 is a cross-sectional view of a state where the inner lid of the rice cooker in Embodiment 1 of the present invention is mounted, and FIG. 5 is a plan view of the lid mounted with the inner lid of the rice cooker. When the inner lid 7 is rotationally moved in the direction of arrow B shown in FIG. 2 with the inner lid locking means 8 as a fulcrum, the movement of the inner lid 7 is restricted by the inner lid guiding means 23 provided on the lid 4. Guided to a predetermined position of the lid 4. When the inner lid 4 reaches the predetermined position in this manner, the inner lid mounting portion 24 provided at the front end of the inner lid 7 is fixed to the inner lid mounting means 9 provided in the lid 4 as shown in FIG. An inner lid 7 is attached to the lid 4. The inner lid 7 is sandwiched between the pan 1 and the lid 4 when the inner lid 7 is pushed toward the lid 4 by the user, or when the lid 4 is closed by the user while the inner lid 7 is locked. As 7 approaches the lid 4, the inner lid 7 can be rotated.

  The inner lid guiding means 23 is a rib-shaped projection that protrudes downward provided on the inner surface of the lid 4 as shown in FIG. 5, and the outer periphery of the substantially circular inner lid 7 is substantially brought into contact with the projection, It guides to rotate to a predetermined position. Therefore, the shape of the inner lid guiding means 23 can be arbitrarily changed in accordance with the outer shape of the inner lid 7, and may be guided to a predetermined position not by a simple rib shape but by the overall shape of the inner surface of the lid 4. is there. Further, since the inner lid 7 has a substantially circular shape, care such as cleaning and drying is excellent. In addition, although the outer shape of the inner lid 7 is not a simple shape of a substantially circular shape, and the careability is lower than that of the inner lid 7, the inner lid guide means 23 is provided on the inner lid 7, and the lid 4 corresponds to the inner lid guide means 23. You may provide unevenness.

  As preparation work in actual rice cooking, the user stores the pan 1 containing rice and water in the main body 16 and closes the lid 4 with the inner lid 7 locked by the inner lid locking means 8. Do. At this time, the inner lid 7 is locked to the lid 4 by the inner lid locking means 8, and the inner lid 7 is guided to the inner lid mounting means 9 by the inner lid guiding means 23 as the lid 4 is rotated. Mounted in position. Since the inner lid 7 is mounted at a predetermined position on the lid 4, the inner lid 7 and the pan 1 come into contact with each other at an appropriate position, so that the inner lid 7 and the pan 1 can be securely sealed, and normal rice cooking at atmospheric pressure is possible. Of course, there is no leakage of steam in pressure rice cooking at high temperature and high pressure, and rice cooking performance is stabilized.

  In such a preparatory work, the user can automatically attach the inner lid 7 to the lid 4 only by closing the lid 4 without carrying out the storing of the inner lid 7 in the lid 4 as its own operation procedure. Therefore, the burden of the user's operation of attaching the inner lid 7 to the lid 4 at a predetermined position can be further omitted.

  FIG. 6 is a front view of the input operation unit of the rice cooker according to Embodiment 1 of the present invention. The input operation unit 17 is operated when the user sets a desired driving course or starts a rice cooking process or the like, and sets a rice cooking switch 17a for starting the rice cooking process, and cooked rice Each switch such as a hardness setting switch 17b and a display unit 18 are provided. The display unit 18 is a main display unit 18a for displaying the end of cooking rice, a selected course, etc., a rice cooking lamp 18b indicating that the rice cooking process is being performed, a heat retaining lamp 18c indicating that the heat retaining process is being performed, and warming the cold rice. A reheat treatment lamp 18d indicating that the reheating process is in progress, a pressure processing lamp 18e indicating that the pressure process is being performed, and the like are included.

  Next, each process of the rice cooking process in Embodiment 1 of this invention is demonstrated. FIG. 7: is a temperature chart which shows the temperature change in the pan in each process of the rice cooker in Embodiment 1 of this invention. The rice cooking process of the rice cooker in Embodiment 1 of this invention is comprised in order of a water immersion process, a cooking process (the part is called a boiling maintenance process), and a steaming process, as shown in FIG. (Not shown) is executed.

  In the water immersion process, a predetermined amount of water relative to the amount of rice is supplied into the pan by the user, heated by the pan heating means 2 or the like, and the pan temperature detecting means 11 is detecting the temperature of the pan 1. It is performed at a maximum temperature (about 55 to 58 ° C.) or less where gelatinization is not performed for a predetermined time, and then the cooking process is performed.

  In the cooking process, the pan 1 is mainly heated by the pan heating means 2 and boiled. Moreover, the steam hole 7a is closed by the pressure adjusting means 13, the inside of the pan 1 is sealed, the steam is filled to increase the pressure in the pan 1 above the atmospheric pressure, and the cooked rice water is boiled at 100 ° C. or higher.

  During heating, when the temperature of the pan 1 reaches around 60 ° C., gelatinization of starch starts. In this cooking process, rice has a low water content, so it takes time to absorb water and takes time to gelatinize. In addition, if the rice is boiled rapidly in order to shorten the cooking time, the surface of the rice will be gelatinized first, and water and heat transfer to the inside of the rice will not be sufficient, especially in the state where gelatinization in the center of the rice is not completed Because the rice cooking process ends, it will become sticky rice without stickiness. Then, it controls so that it may become a moderate temperature rise rate, adjusting the heating of the pan heating means 2. FIG. Moreover, since the pressure in the pan 1 is higher than atmospheric pressure, cooking with water at 100 ° C. or higher increases the amount of heating and promotes gelatinization as compared with cooking with water at 100 ° C. When the inner lid temperature detection means 12 detects that the water in the pot 1 has boiled, the process proceeds to the boiling maintenance step.

  In the boiling maintaining step, boiling is maintained while opening the steam hole 7a by the pressure adjusting means 13 and making the pressure in the pan 1 equal to the atmospheric pressure. Since water convects due to boiling, when water flows vigorously between the rice, water and heat are evenly supplied to the entire rice in the pan 1 to promote gelatinization. Moreover, when the water in the pan 1 evaporates, steam flows due to the opening of the steam hole 7a. The steam passes through the rice and rises and is discharged from the steam hole 7a to the outside of the rice cooker. Passes between the rice to heat the rice and further promotes gelatinization.

  When the cooked water in the pot 1 evaporates and almost disappears, the temperature of the pot 1 rises rapidly. When the pan temperature detecting means 11 detects a predetermined temperature due to this rapid rise, the boiling maintenance process is terminated and the process proceeds to the next steaming process.

  In the steaming step, the pot heating means 2, the pot side surface heating means 3 and the inner lid heating means 10 perform additional cooking to maintain the temperature of the rice, continue the gelatinization and evaporate excess water.

  After performing the steaming process for a predetermined time, a heat retaining process for maintaining the temperature in the pan 1 at a predetermined temperature (for example, around 70 ° C.) is performed.

  Hereinafter, operation | movement and an effect | action are demonstrated about the rice cooker in Embodiment 1 of this invention using FIGS.

  When the pan 1 containing rice and water is set in the main body 16 and the rice cooking switch 17a is pressed by the user at time t0, the rice cooking lamp 18b is turned on to start the flooding process. The rice and water in the pan 1 are heated to a constant temperature mainly by the pan heating means 2 and held.

  At the time t1, the cooking process is started. The pan 1 is closed by the pan heating means 2, the pan side heating means 3, and the inner lid heating means 10 in a state where the steam hole 7 a is closed by the pressure adjusting means 13 and the steam is filled and the pressure in the pan 1 is set to atmospheric pressure or higher. Heat and boil the water in the pan 1. The pressure processing lamp 18e is blinked.

  At time t2, the water in the pan 1 boils, and the boiling maintenance process is started as part of the cooking process. The pressure adjusting means 13 opens the steam hole 7a to release the steam to the outside of the machine, and maintains the boiling to supply water and heat to the rice to promote gelatinization.

  At time t3, when the pot temperature detecting means 11 detects that the water in the pot 1 has run out and the temperature of the pot 1 has risen rapidly and has reached a predetermined temperature, the steaming process is started. Furthermore, at time t4, the rice cooking process is terminated and the process proceeds to a heat retaining process.

  Moreover, in this Embodiment 1, the rice operation input part (not shown) which selects the rice seed | rice to cook rice is provided in the input operation part 17, and the pressure value appropriate for each rice seed | species is each memorize | stored in the memory | storage means. By adjusting with the pressure adjustment means 13 so that it may become a pressure value according to the selected rice seed | species, each rice seed | species can be cooked with a suitable temperature and pressure. For example, in the case of brown rice, it can be cooked without hardness and crustiness by making the pressure value higher than when white rice is selected. Moreover, by making it possible to select rice varieties more finely from soft rice and hard rice, new rice and old rice, white rice and brown rice, etc., more appropriate rice cooking can be performed for each rice variety.

  Moreover, in the rice cooker in this Embodiment 1, although the pan heating means 2, the pan side surface heating means 3, and the inner lid heating means 10 are those by induction heating, any heat source such as an electric heater or gas combustion can be used. It is not necessary to provide other than the pot heating means 2. Moreover, each may be a single ring shape, and may be divided | segmented into plurality. Of course, it may be composed of a plurality of coils.

  The pan temperature detection means 11 and the inner lid temperature detection means 12 may be any detection principle as long as it can detect a range from a temperature during normal operation to a high temperature at the time of abnormality.

  Moreover, in the rice cooker in this Embodiment 1, although the pressure adjustment means 13 adjusted the pressure in the pan 1 by opening and closing the steam hole 7a of the inner lid 7, if the pressure in the pan 1 can be controlled. Anything is acceptable.

  About the rice cooker in Embodiment 1 as mentioned above, it demonstrates further focusing on a viewpoint of a user's operation and rice cooking performance.

  First, when the lid 4 is closed in the direction of arrow C while the inner lid 7 is in the locked state, the inner lid locking means 8 continues to hold the inner lid 7 in the locked state, and the inner lid 7 is the upper end of the pan 1. As the lid 4 is further closed, it rotates to the arrow B side with the inner lid locking means 8 as a fulcrum and is guided to a predetermined position by the inner lid guiding means 23. When reaching the predetermined position, the lid 4 and the pan 1 are sandwiched. Thus, the inner lid mounting portion 24 is mounted on the inner lid mounting means 9 of the lid 4.

  As preparation work in actual rice cooking, the user stores the pan 1 containing rice and water in the main body 16, locks the inner lid 7 to the lid 4 by the inner lid locking means 8, and closes the lid 4. Do. At this time, the inner lid 7 is locked to the lid 4 by the inner lid locking means 8, and the inner lid 7 is guided to the inner lid mounting means 9 by the inner lid guiding means 23 as the lid 4 is rotated. Mounted in position. Since the inner lid 7 is mounted at a predetermined position of the lid 4 and the inner lid 7 is disposed at a predetermined position of the pan 1, the inner lid 7 and the pan 1 can be securely sealed, and normal cooking at atmospheric pressure is Of course, there is no leakage of steam in pressure rice cooking at high temperature and high pressure, and rice cooking performance is stabilized.

  In such a preparatory work, the user can automatically attach the inner lid 7 to the lid 4 only by closing the lid 4 without carrying out the storing of the inner lid 7 in the lid 4 as its own operation procedure. Therefore, the burden of the user's operation of attaching the inner lid 7 to the lid 4 at a predetermined position can be further omitted.

  In the first embodiment, the shape of the packing 7b is described as a simple cross-sectional shape. However, in reality, the shape of the tip is thin and can be deformed by the internal pressure in the pan 1 to further enhance the sealing performance. It shall be provided. However, this is also a conventional technique, and various specific shapes are possible, and detailed illustration is omitted.

  Subsequently, when the inner lid 7 is opened from the lid 4 by the inner lid mounting means 9 after cooking or heat insulation, the inner lid 7 rotates and moves in the direction opposite to the arrow B with the inner lid locking means 8 as a fulcrum. Since the state can be changed from the state to the locked state and a part of the inner lid 7 can be held and removed with one hand, the burden of care is reduced.

  When the inner lid 7 is attached to the lid 4, as shown in FIG. 2, the inner lid 7 is held in a locked state with an inclination angle α with respect to the lid 4 by the inner lid locking means 8. The inner lid 7 is rotationally moved in the direction of arrow B with the locking means 8 as a fulcrum, the movement of the inner lid 7 during the rotational movement is regulated by the inner lid guiding means 23, and the predetermined position of the lid 4 is reached. The inner lid 7 may be attached to a predetermined position of the lid 4 by 9. With these configurations, the user can hold a part of the inner lid 7 with one hand and operate from the locked state to the mounted state simply by pushing the lid 4 side without having to adjust the trajectory of the rotational movement of the inner lid 7. As a result, the burden on the operation of the user wearing the inner lid 7 is reduced.

  At the same time, the attachment of the inner lid 7 to the lid 4 is reliably performed with one hand and is attached at a predetermined position. Therefore, when the lid 4 is closed, the sealing performance between the pot 1 and the packing 7b of the inner lid 7 is ensured. The There is no leakage of steam in pressure rice cooking in which the inside of the pan 1 is at high temperature and high pressure, and a predetermined rice cooking performance is stably exhibited while accurately adjusting the pressure in the pan 1 with the pressure adjusting means 13.

  In the first embodiment, the part of the user is not clear, but a dedicated handle may be provided on the outer edge of the inner lid 7.

  Secondly, the inner lid locking means 8 is arranged closer to the lid hinge 5 and the inner lid mounting means 9 is arranged closer to the lid lock 6.

  In this configuration, when the lid 4 is in the open state, the lid hinge 5 is located at the lower part of the lid 4 placed in a substantially vertical direction, and the lid lock 6 is located at the upper part of the lid 4. By providing 8 near the lid hinge 5, the inner lid 7 is supported at the lower end or the lower portion in the vertical direction. That is, although the inner lid 7 is heavier than normal rice to perform pressure rice cooking, the user stores the inner lid 7 so as to slide by its own weight from above or obliquely upward, and the inner lid 7 is locked. This is a natural storage operation, and the burden of operation is reduced.

  Further, since the inner lid mounting means 9 is provided closer to the lid lock 6, the inner lid 7 only has to be rotated about the lower inner lid locking means 8 as a fulcrum, and is a relatively heavy inner lid 7. However, since the frictional resistance in the rotation by the inner lid locking means 8 is small, the operating force for pushing the upper part of the inner lid 7 and attaching it to the inner lid attaching means 9 as shown by the arrow B is only small. is there.

  Thirdly, the inner lid mounting means 9 has release means 25 for releasing the inner lid mounting portion 24 from the lid 4 and rotates and moves with the inner lid locking portion 20 held by the inner lid locking means 8 as a fulcrum. The release means 25 is arranged outside the movement space of the inner lid 7 formed by this. The movement space of the inner lid 7 is also referred to as a movement range of the inner lid 7 or an inner lid movement space.

  In order to remove the inner lid 7 after rice cooking or heat retention, the lid lock 6 is first removed, the lid 4 is opened, and then the release means 25 is operated to remove the inner lid 7 from the lid 4. At this time, the finger operating the release means 25 does not touch the inner lid 7 that rotates from the mounted state to the locked state with the inner lid locking means 8 as a fulcrum. Even when the temperature is high, the inner lid 7 can be locked without being touched directly by the user. Furthermore, since the inner lid 7 is in the locked state, heat is radiated from both surfaces of the inner lid 7 having a large heat capacity and a high temperature, and the surface temperature is lowered in a short time.

  Although the specific structure of the release means 25 is not shown, any structure may be used as long as the inner lid mounting portion 24 is taken out from the inner lid mounting means 9, and a conventional mechanism technique uses a combination of a spring and a latch. Can be realized.

  Fourthly, the inner lid attaching means 9 has a lid lock stopping means 26 that does not close the lid 4 when the inner lid 7 is not attached (see FIG. 5).

  When the inner lid attaching means 9 for attaching the inner lid 7 to the lid 4 has a convex portion that is not housed inside the lid 4 when the inner lid 7 is not attached, for example, the convex portion of the inner lid attaching means 9 is By hitting the main body 16, the lid 4 is prevented from rotating with respect to the pan 1 until it is closed. For this reason, the lid 4 cannot be attached to the main body 16. That is, the convex portion of the inner lid mounting means 9 becomes the lid lock stopping means 26.

  Furthermore, the lid lock stopping means 26 is retractable and accommodated in the lid 4 when the inner lid mounting portion 24 is fully stored in the inner lid mounting means 9 in a predetermined position as well as when it is almost stored. With such a configuration, even when the lid 4 is closed while the inner lid 7 is locked, the inner lid 7 is attached to the lid 4.

  Since there is this lid lock stop means 26, when the lid 4 and the inner lid 7 are not correctly attached, the operation of cooking rice or keeping warm can be stopped. As a result, incomplete rice cooking performance and heat retention performance due to forgetting to attach the inner lid 7 can be prevented. When the user releases his / her hand from the lid 4, it can be clearly seen that the lid 4 is normally opened by the opening force of the lid hinge 5 and the inner lid 7 is not attached. Moreover, in the first embodiment, when the inner lid 7 is not attached and the lid lock stopping means 26 acts, the lid 4 is opened by the action of the lid hinge 5, and the user can more reliably attach the inner lid 7. Since it can confirm that it is not carried out, the inner lid 7 will not be forgotten to be mounted at a necessary timing such as rice cooking or heat insulation.

  8 is an enlarged cross-sectional view showing another example of the inner lid locking means of the rice cooker according to Embodiment 1 of the present invention. As shown in FIG. You may comprise the latching | locking part bearing 30 which rotates the inner cover 7 to inclination | tilt angle (alpha) centering | focusing on the latching | locking part 20, and the latching | locking part detent | locking 21 which stops rotation of the inner lid 7 at inclination | tilt angle (alpha). With respect to the locked state in which the inner lid 7 is locked with respect to the lid 4, the inner lid locking portion 20 of the inner lid locking means 8, particularly the inner lid locking portion shaft 20 a is substantially centered by the locking portion bearing 30. The inner lid 7 is rotated to the inclination angle α by its own weight. Further, the rotation of the inner lid 7 is stopped at the inclination angle α by the locking portion detent 21. Since it can be stopped with little resistance to rotation, the operation is light and durability is excellent.

  The rotational drive source may have various configurations in the prior art, such as the weight of the inner lid 7 and the repulsive force of the lid 4 or the spring provided on the inner lid 7. 7 is a simple configuration without using extra parts, and the size and mass of the lid 4 and the main body 16 can be realized with almost the same size as the conventional one. There is no decrease in operability or increase in size of parts due to an increase in mass of the 4 and the inner lid 7.

  9 is a cross-sectional view showing another example of the inner lid of the rice cooker according to Embodiment 1 of the present invention. As shown in FIG. 9, the inner lid 7 locked to the inner lid locking means 8 is provided. It may be configured such that the center of gravity P of the inner lid 7 is on the opposite side of the lid 4 with the inner lid locking means 8 as the center in the range of rotation from the locked state having an inclination angle to the mounted state in the substantially vertical direction. . Even if the inner lid 7 is set at an angle standing in a vertical direction with respect to a predetermined inclination angle, the center of gravity P of the inner lid 7 is covered with the inner lid locking means 8 as the center when locked to the inner lid locking means 8. 4 is automatically rotated by a rotational moment (D × W) using the own weight (indicated by arrow W) of the inner lid 7 as a drive source up to a predetermined inclination angle α. Further, even if a slight external force or vibration is applied to the lid 4 and the inner lid 7, a force that rotates to the inclination angle α always acts, so that it is stable in the locked state.

(Embodiment 2)
FIG. 10 is a plan view of a lid equipped with the inner lid of the rice cooker in Embodiment 2 of the present invention, and FIG. 11 is a cross-sectional view of the lid fitted with the inner lid of the rice cooker. As shown in FIG. 10, the releasing means 25 of the inner lid mounting means 9 has an inner lid pushing pin 32 that pushes the inner lid 7 forward from the lid 4 with the inner lid locking portion 20 as a fulcrum. The basic structure as a rice cooker is the same as that of Embodiment 1, and illustration and description thereof are omitted.

  In order to remove the inner lid 7 from the lid 4 by the releasing means 25 of the inner lid mounting means 8, the inner lid pushing pin 32 that pushes the inner lid 7 forward with the inner lid engaging portion 20 as a fulcrum is provided. One end of the inner lid 7 can be pushed forward at a distance L from the inner lid locking means 8 with a relatively small force indicated by an arrow F, and the inner lid mounting portion 24 is reliably separated from the lid 4.

  The inner lid pushing pin 32 is energized by a spring force (not shown), pushes the inner lid mounting portion 24 of the inner lid 7 with a predetermined force, and smoothly starts rotating due to its own weight. In addition to the spring force, it may be driven by a magnetic force such as a permanent magnet or a solenoid.

  Further, the pressure adjusting means 13, particularly the pressure adjusting ball 13 a is arranged between the inner lid 7 and the lid 4.

  A pressure adjusting means 13 (also called a pressure adjusting valve or a pressure adjusting ball) is arranged between the inner lid 7 and the lid 4 and seals high-temperature and high-pressure steam, so that the pressure adjusting means 13 has a certain weight and size. In particular, by attaching the pressure adjusting ball 13 a to the inner lid 7, the inner lid 7 locked to the inner lid locking means 8 rotates from the locked state having the inclination angle α to the mounted state in the substantially vertical direction. The center of gravity of the inner lid 7 is close to the lid 4. Therefore, when the inner lid 7 is locked to the inner lid locking means 8 and subsequently attached to the lid 4, the inner lid 7 is closed with a small force as much as the center of gravity of the inner lid 7 is closer to the lid 4. It can be mounted by the inner lid mounting means 9 by rotating in the direction of.

  Further, when opening the inner lid 7, the center of gravity of the inner lid 7 is close to the lid 4, so that the force acting during the change from the mounted state to the locked state corresponds to the mass of the pressure adjusting means 13. This reduces the impact force when the inner lid 7 stops in the locked state. There is little deformation accompanying opening and closing of the inner lid 7, and it is excellent in durability.

(Embodiment 3)
FIG. 12 shows a cross-sectional view of the rice cooker main body according to Embodiment 3 of the present invention. As shown in FIG. 12, the rice cooker body includes an inner lid temperature detecting means 12 for detecting the temperature of the inner lid, The control means 15 has a first release means control unit 35 so as to stop the opening of the inner lid 7 from the inner lid mounting means 9 based on the temperature of the inner lid 7. The basic structure as a rice cooker is the same as that of Embodiment 1, and illustration and description thereof are omitted.

  Based on the detected temperature of the inner lid temperature detecting means 12 for detecting the temperature of the inner lid 7, the control means 15 determines the operation stop of the releasing means 25 for opening the inner lid 7 from the inner lid mounting means 9, and as a result And a first release means control unit 35 for executing The control means 15 interlocks them so that, for example, the inner lid 7 is not opened immediately after rice cooking or when the temperature of the inner lid 7 is high, so that the user does not notice that the inner lid 7 is hot. You can prevent burns while trying to take out.

  The rice cooker normally has a heating means control unit 15a for controlling the pot heating means 2 and temperature measurement control so that the temperature of the pot 1 and the cooked food changes appropriately by the pot temperature detecting means 11 and the inner lid temperature detecting means 12 or the like. The control means 15 which has the part 15b is provided, The operation | movement of the 1st cancellation | release means control part 35 can be similarly controlled based on the instruction | command of this control means 15. FIG.

  In the third embodiment, the opening of the inner lid 7 is controlled by the first release means control unit 35 of the control means 15, but the opening of the inner lid 7 is executed in conjunction with the temperature of the inner lid 7. A mechanism having a thermosensitive element may be used.

(Embodiment 4)
FIG. 13: has shown sectional drawing of the rice cooker main body in Embodiment 4 of this invention, and as shown in FIG. 13, it has the cover state detection means 37 which detects the open state of the cover 4, and the cancellation | release means 25 is A second release means control unit 38 that automatically opens the inner lid when the opened state of the lid 4 continues for a predetermined time or longer is provided. The basic structure as a rice cooker is the same as that of Embodiment 1, and illustration and description thereof are omitted.

  The lid state detection means 37 detects that the lid 4 is in the open state, and the control means 15 that controls the operation of the rice cooker when the open state of the lid 4 is longer than a predetermined time set in advance. By releasing the inner lid 7 by the release means control unit 38, the inner lid 7 is brought into a locked state, both surfaces of the inner lid 7 are exposed, and the temperature is lowered in a short time. The lid state detection means 37 can be composed of various sensors such as a spherical magnet and a Hall element, although the ambient temperature is often higher than room temperature by being attached to the lid 4 of the rice cooker. There is no particular limitation.

  Moreover, FIG. 14 has shown the temperature chart which shows the temperature change in the pan in each process of the rice cooker in Embodiment 4 of this invention, and when lid | cover 4 is opened after a heat retention stop as shown in FIG. The release means 25 automatically opens the inner lid 7 in response to a command from the means 15.

  Normally, the user opens the lid 4 after stopping the heat retention, and takes care of the pan 1 and the inner lid 7 by taking them out and washing them. That is, when the lid 4 is opened after the heat retention is stopped, the inner lid 7 is automatically released from the lid 4 by the release means 25, so that the temperature of the inner lid 7 is reduced in a short time and the inner lid 7 is easily removed. Can be removed.

(Embodiment 5)
FIG. 15: has shown sectional drawing of the state which latched the inner cover of the rice cooker in Embodiment 5 of this invention, and the cover 4 opened 90 degree | times or more with respect to the main body 16 as shown in FIG. When the inner lid 7 is attached to the inner lid locking means 8 from a substantially vertical direction as indicated by an arrow A, the inner lid 7 rotates to the arrow B side due to the weight of the pressure adjusting means 13 and is attached to the lid 4. It is characterized by being. The basic structure as a rice cooker is the same as that of Embodiment 1, and illustration and description thereof are omitted.

  The inner lid 7 has pressure adjusting means 13 on the upper surface side, that is, between the inner lid 7 and the lid 4. As can be easily estimated from FIG. 15, the inner lid 7 is moved to the inner lid locking means 8 with an arrow. When mounted in the A direction, the inner lid 7 rotates and moves to the arrow B side due to the weight of the pressure adjusting means 13 and is guided by the inner lid guiding means 23 to reach a predetermined position of the lid 4. 4 is attached. The user can attach the inner lid 7 to the lid 4 just by attaching the inner lid 7 to the inner lid locking means 8 in the substantially vertical direction, which is the direction of arrow A, without considering the locking angle. Simple.

  Needless to say, even if the inner lid 7 is attached to the inner lid locking means 8 with the inner lid 7 inclined further to the lid 4 side than the substantially vertical direction, the inner lid 7 rotates and moves to the lid 4 side.

  Even if the pressure adjusting means 13 is not provided on the inner lid 7, the inner lid 7 is configured so that the center of gravity of the inner lid 7 is close to the lid 4 side when the inner lid 7 is attached in the substantially vertical direction. It can be rotationally moved in the direction of arrow B and automatically attached to the lid 4.

  Alternatively, the inner lid 4 may be configured to be self-supporting without rotating when the inner lid 4 is locked to the inner lid locking means 8, and may be configured to rotate when pushed by the user toward the arrow B side. When the state in which the inner lid 7 is attached to the lid 4 is released, the inner lid pushing pin 32 described in the second embodiment is provided, and the inner lid 7 is moved back and forth in the locked state. Although swinging, the impact force generated in the inner lid latching portion 20 and the inner lid latching means 8 when stopped in the latching state is small, and the durability is excellent. If the inclination angle α is the minimum angle that can be operated by the user, the impact force is further reduced.

  In each of the above embodiments, a plurality of inner lid locking portions 20 and inner lid mounting portions 24 may be provided on the inner lid 7 as shown in FIG. When the inner lid 7 is attached to the lid 4, the inner lid 7 is substantially circular and there are a plurality of inner lid engaging portions 20 and a plurality of inner lid attaching portions 24 on the outer peripheral portion thereof. Since the user can select a plurality of directions, the user can easily attach the inner lid 7 without being aware of the vertical direction and the mounting angle of the inner lid 7, so that the inner lid 7 is easy to use.

  In addition, although the pan heating means 2, the pan side heating means 3, and the inner lid heating means 9 in each of the above-described embodiments are configured by a heating coil for induction heating the pan 1 and the inner lid 7, other heaters, steam, etc. It may be a heat source. Therefore, although the pan 1 and the inner lid 7 are made of a metal material that can be induction-heated, other materials may be used depending on the heat source.

  In addition, although each said embodiment has the pressure detection means 13c which detects the pressure in the pan 1, the temperature in the pan 1 is detected by the inner lid temperature detection means 12 or other temperature detection means. The operation may be controlled by estimating the pressure in the pan 1.

  In addition, the invention in Embodiment 1-5 may be mounted in one rice cooker, and can acquire each said effect.

  As mentioned above, since the rice cooker concerning this invention can reduce operation of an inner lid and can stabilize rice cooking performance, it can be applied also to uses, such as a higher temperature high pressure commercial rice cooker and a cooker.

Sectional drawing of the rice cooker main body in Embodiment 1 of this invention. Sectional view of the state where the inner lid of the rice cooker is locked Enlarged sectional view showing the inner lid locking means of the rice cooker A sectional view of the rice cooker with the inner lid attached Top view of the lid with the inner lid of the rice cooker Front view of the input operation unit of the rice cooker Temperature chart showing the temperature change in the pan in each process of the rice cooker The expanded sectional view which shows the latching part bearing of the rice cooker Sectional view of the lid with the inner lid of the rice cooker The top view of the lid | cover equipped with the inner lid | cover of the rice cooker in Embodiment 2 of this invention. Sectional view of the lid with the inner lid of the rice cooker Sectional drawing of the rice cooker main body in Embodiment 3 of this invention. Sectional drawing of the rice cooker main body in Embodiment 4 of this invention. Temperature chart showing the temperature change in the pan in each process of the rice cooker Sectional drawing of the state which latched the inner lid of the rice cooker in Embodiment 5 of this invention The top view of the lid | cover equipped with the inner lid | cover of the rice cooker in Embodiment 1-5 of this invention.

DESCRIPTION OF SYMBOLS 1 Pan 2 Pan heating means 3 Pan side surface heating means 4 Lid 7 Inner lid 8 Inner lid latching means 9 Inner lid mounting means 10 Inner lid heating means 11 Pan temperature detection means 12 Inner lid temperature detection means 13 Pressure adjustment means 16 Main body 22 Locking part slip prevention part 23 Inner lid guide means 25 Release means 35 First release means control part 37 Cover state detection means 38 Second release means control part

Claims (4)

A pan, a heating means for heating the pan, a main body for storing the pan, a lid covering the opening of the pan, an inner lid attached to the lid, and the inner lid at a predetermined angle with respect to the lid An inner lid locking means that is detachably held in a locked state, a pressure adjusting means that is provided on the inner lid and adjusts the pressure in the pan, and the inner lid is mounted at a predetermined position of the lid. An inner lid mounting means; and an inner lid guiding means for guiding the rotational movement of the inner lid so as to reach the predetermined position when the inner lid is rotated toward the lid with the inner lid locking means as a fulcrum. The inner lid locking means has a non-slip portion that prevents the inner lid from slipping in the removing direction, and when the inner lid is closed and the lid is closed, the inner lid is closed until the lid is closed. holding the inner lid in the locking state, the pressure adjusting means is disposed between the lid and the inner lid Is, the inner lid in an attached state is configured to open more than 90 degrees relative to the body, when the inner lid attached to the locking means in the opened state of the lid, the weight of the pressure regulating means to the lid side rice cooker for rotational movement. A pan, a heating means for heating the pan, a main body for storing the pan, a lid covering the opening of the pan, an inner lid attached to the lid, and the inner lid at a predetermined angle with respect to the lid An inner lid locking means that is detachably held in a locked state, a pressure adjusting means that is provided on the inner lid and adjusts the pressure in the pan, and the inner lid is mounted at a predetermined position of the lid. An inner lid mounting means; and an inner lid guiding means for guiding the rotational movement of the inner lid so as to reach the predetermined position when the inner lid is rotated toward the lid with the inner lid locking means as a fulcrum. The inner lid locking means has a non-slip portion that prevents the inner lid from slipping in the removing direction, and when the inner lid is closed and the lid is closed, the inner lid is closed until the lid is closed. holding the inner lid in the locking state, the lid temperature detection means among which detects a temperature of the inner lid, before The mounting by inner lid mounting means so released to incline the said lid and a releasing means for in the locked state, the release means based on the temperature of the inner lid, the mounting of the inner lid by the inner lid mounting means The rice cooker which has the 1st cancellation | release means control part which stops cancellation | release. A pan, a heating means for heating the pan, a main body for storing the pan, a lid covering the opening of the pan, an inner lid attached to the lid, and the inner lid at a predetermined angle with respect to the lid An inner lid locking means that is detachably held in a locked state, a pressure adjusting means that is provided on the inner lid and adjusts the pressure in the pan, and the inner lid is mounted at a predetermined position of the lid. An inner lid mounting means and the inner lid before reaching the predetermined position when the inner lid rotates and moves toward the lid with the inner lid locking means as a fulcrum.
An inner lid guiding means for guiding the rotational movement of the inner lid, wherein the inner lid locking means has a non-slip portion for preventing the inner lid from slipping in the removing direction, and the inner lid is locked. when in a state closing the lid, the inner lid until the lid is closed and held in the locking state, and the cover state detection means for detecting the open state of the lid, to release the mounting by the inner lid mounting means A second release means control that automatically releases the inner lid when the open state of the lid continues for a predetermined time or longer. Rice cooker with a part. A pan, a heating means for heating the pan, a main body for storing the pan, a lid covering the opening of the pan, an inner lid attached to the lid, and the inner lid at a predetermined angle with respect to the lid An inner lid locking means that is detachably held in a locked state, a pressure adjusting means that is provided on the inner lid and adjusts the pressure in the pan, and the inner lid is mounted at a predetermined position of the lid. An inner lid mounting means; and an inner lid guiding means for guiding the rotational movement of the inner lid so as to reach the predetermined position when the inner lid is rotated toward the lid with the inner lid locking means as a fulcrum. The inner lid locking means has a non-slip portion that prevents the inner lid from slipping in the removing direction, and when the inner lid is closed and the lid is closed, the inner lid is closed until the lid is closed. holding the inner lid in the locking state, tilting the inner lid to release the attachment by the inner lid mounting means Comprising a releasing means so that the in the locked state is, when opening the lid after kept stopped, the releasing means cooker to release the automatic mounting of the inner lid.