JP5328221B2 - rice cooker - Google Patents

Description

  The present invention relates to a rice cooker and a rice cooking method, and more particularly to a rice cooker and a rice cooking method for adding a burnt smell to freshly cooked rice.

  Recent rice cookers are equipped with a microcomputer, and with this microcomputer, you can select and decide the rice cooking method according to the rice type such as white rice and brown rice, adjust the rice rice cooking menu, hard and soft etc. There are various cooking menus, such as a rice cooking menu that allows you to select the rice cooking or a rice cooking menu that burns the cooked rice, and you can run various rice cooking menus. The rice cooker provided with the rice cooking menu is disclosed by the following patent documents 1 and 2, for example.

  The rice cooker disclosed by the following patent document 1 reheats an inner pot after completion | finish of rice cooking, and burns the cooked rice. Specifically, the rice cooker equipped with this cooked rice cooking menu includes an inner pot for putting rice and water, a heating plate for heating the bottom of the inner pot, and a control device for controlling the heating amount of the heating plate. The control device starts to energize the heating plate after the rice cooking process and heats the bottom of the kettle to a high temperature (120 ° C. or higher) to burn the cooked rice. This rice cooker can change the temperature at the bottom of the pot according to the amount of rice cooked, and can burn with different shades.

Moreover, the rice cooker disclosed by the following patent document 2 makes it burnt in the rice cooker which used the electromagnetic induction coil for the heating means. This rice cooker includes an induction heating means for induction heating the inner pot, a baking heating control mode setting means, and a baking heating control means, and the baking heating control means includes predetermined heating control and is used in the cooking process. It is comprised so that heating control may be performed. This rice cooker has a longer total heating time including residual heat than the one that directly heats the inner pot with the heater plate, and the reheating temperature must be higher than that with the heater plate. Overheat prevention device to prevent is installed. In other words, when an electromagnetic induction coil is used as the heating means, since the pot is not heated directly like the heating plate of the rice cooker, so-called heater plate, the residual heat action is reduced and the heating output is higher than that of the heater plate. Since it is set, an overheat prevention device for preventing overheating is provided.
Japanese Utility Model Publication No. 58-29027 (claim for registration of utility model, FIG. 6) JP 2003-325331 A (paragraphs [0002] to [0005], FIG. 6)

  According to the rice cookers of Patent Documents 1 and 2, the cooked rice can be burnt by reheating. However, in order to apply this charring, in the rice cooker of Patent Document 1 below, the pan must be heated to a high temperature (120 ° C. or higher) and reheated after the completion of rice cooking. For this reason, the components that make up the rice cooker, such as the storage case for storing the pan and other components, must be made of materials that can withstand this high temperature, and on the other hand, measures to prevent overheating are necessary in preparation for overheating. Therefore, if such materials are used and safety measures are taken, the cost of the rice cooker will be increased. Moreover, the rice cooker of the following patent document 2 takes the overheating prevention measure, and takes time so that it may not overheat, and the same subject as the said rice cooker is latent.

  The present inventor has been involved in the development and commercialization of rice cookers for many years.In recent years, in a pressure-type rice cooker that cooks rice by raising the pressure in the pan to atmospheric pressure or higher, the pressure valve is used in the boiling maintenance process after the water absorption process. By developing a rice cooker that cooks rice by causing a so-called bumping phenomenon that temporarily opens and lowers the pressure in the pan from high pressure to near atmospheric pressure and stirs the rice grains vigorously in the pan. Several patents have already been acquired (for example, refer to Japanese Patent No. 3852293). For example, the pressure-type rice cooker disclosed in Japanese Patent No. 3852293 is a boil maintaining process of the rice cooking process, and the pressure valve is forcibly opened to reduce the pressure in the boiling pot to near atmospheric pressure at once. By doing this, a bumping phenomenon is generated in the pan, and the rice grains are controlled to be stirred and cooked. In this boiling maintenance process, a large amount of rice cake spouts in conjunction with the bumping phenomenon in the pan, and this rice cake is returned to the pan again during the rice cooking process, but this rice cake is an umami component of rice. It is configured. The present inventor has found that a burning odor is generated when this rice cracker is heated, and if the rice cracker with this burning smell is returned to the pan, the pan is not heated to a high temperature as in the prior art. Of course, it is possible to easily add a burning odor to rice without the need for an overheating prevention device, etc., and even if it does not lead to actual burning, it can be easily applied. The present invention has been completed.

  Therefore, the present invention has been made in consideration of the above-described development situation while solving the problems of the conventional technology, and the object of the present invention is to cook rice that can be burnt but has a fragrant burnt smell. Is to provide a vessel.

In order to achieve the above object, the invention of the rice cooker according to claim 1 includes a pan into which a cooked rice containing water and rice is charged, and a heating means for heating the cooked rice in the pan, In the rice cooker provided with a lid that closes the opening of the pan, and a control device that executes the rice cooking process of controlling the heating means to cook the rice to be cooked in the pan, the lid includes the above-mentioned There is provided a ladle ejecting hole through which the ladle in the pot is ejected, a storage chamber for temporarily storing the ladle from the ejection hole, and a return valve for returning the ladle stored in the reservoir to the ladle The storage chamber is provided with a heating means for heating the rice cooker generated in the pan to add a burning odor, and the control device generates the rice cooker during the rice cooking process. some tacky taken out into the storage chamber from the inner pot, in the first half of the boil maintaining step and the steaming step Serial and heated by the heating means if Ne you put your burnt smell, characterized in that it continues the stove and then again back to the inner pot.

Further, the invention according to claim 2 is the rice cooker according to claim 1 , wherein the tortue ejection hole is also used as a steam hole for ejecting steam in the pan, and the return valve has a negative pressure in the pan. It is also used as a negative pressure valve that opens when

The invention according to claim 3 is the rice cooker according to claim 1 , wherein the lid body is provided with a storage tank that temporarily stores a rice bowl generated in the pan, and the storage tank is the storage tank. It is connected to the room.

According to a fourth aspect of the present invention, in the rice cooker of the third aspect , the storage tank is fixed to the lid by a detachable fixing means.

  By providing the above configuration, the present invention has the following excellent effects. That is, according to the first aspect of the present invention, a portion of the rice cake produced in the pan is taken out, and if this rice cake is cooked by the heating means, it is returned to the inside of the pan again. It can be attached to the standing rice. That is, since the rice ball is made of an umami component, a burnt odor is produced when the rice ball is burnt, and this can be added to the cooked rice to add a burnt odor. Therefore, as in the prior art, it is possible to easily add a burning odor without heating the inside of the pan to a high temperature (120 ° C. or higher) and taking the overheating prevention measures required in connection with it.

In addition, the lid is provided with a nebula ejection hole for ejecting the rice bowl in the pan and a storage chamber for temporarily storing the rice bowl from the ejection hole, and a heating means is provided in the storage chamber. By doing so, it is possible to easily extract a portion of the rice cake in the pan and add a burnt smell in the storage chamber.

Moreover, according to invention of Claim 2 , since the steam hole and the negative pressure valve are normally provided in the lid body, if these are used by combining with the ejection hole and the return valve, It can be easily burnt and smelled without remodeling the conventional rice cooker.

According to the invention of claim 3 , the lid body is provided with a storage tank for temporarily storing the rice bowl generated in the pan, and this storage tank communicates with the storage chamber. It is possible to extract and store the stick. In particular, the pressure rice cooker is provided with a storage tank because a large amount of rice cake is ejected from the steam hole when stirring rice in the pan by causing a violent boiling state in the pan at the time of rice cooking. This is suitable for this type of pressure rice cooker.

According to the invention of claim 4 , since the storage tank is fixed to the lid by the detachable fixing means, it can be easily removed and cleaned.

  Hereinafter, the best embodiment of the present invention will be described with reference to the drawings. However, embodiment shown below illustrates the rice cooker and rice cooking method for materializing the technical idea of this invention, Comprising: This invention intends to specify this rice cooker and rice cooking method. Rather, other embodiments within the scope of the claims are equally applicable.

  The rice cooking method according to an embodiment of the present invention includes a step of containing a rice to be cooked containing rice and water in a pot, a step of producing a rice cake by heating and boiling the rice to be cooked in the pan, A step of removing a part of the generated rice cake from the pot and heating it to add a burning smell, and a step of returning the rice cake with the burning smell to the pot again. The rice is cooked by sequentially executing the above steps.

  According to this rice cooking method, a portion of the rice cracker generated in the pan is taken out, and the rice cracker is heated with the charcoal heating means and returned to the pan again, so the burnt smell is added to the cooked rice. Can be attached. In other words, since rice balls are made of umami ingredients, when the rice balls are heated, a burning odor can be produced, and when the rice balls are returned to the pan, the burning odor can be added to the rice. Therefore, it is possible to easily add a burning odor without heating to a high temperature (120 ° C. or higher) as in the prior art, and without taking the overheating prevention measures required in association with the heating.

  Next, with reference to FIGS. 1-4, an example of the rice cooker which employ | adopts this rice cooking method is demonstrated. 1 is a front view of a rice cooker according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the pressure rice cooker of FIG. 1, FIG. 3 is an enlarged view of the pressure valve opening mechanism of FIG. FIG. 3 is an enlarged view of a portion X in FIG. 2.

  As shown in FIGS. 1 and 2, a pressure-type rice cooker (hereinafter simply referred to as “rice cooker”) 1 includes a pot 10 into which a rice to be cooked containing rice and water is placed, and the pot 10 is accommodated above. And a rice cooker body (hereinafter referred to as a body) 2 having a bottom heater 5 and a side heater 6 for heating the cooked rice 10 by heating the pot 10 in the opening and the inside, and one side of the body 2 being pivotally supported. A lid body 11 having a lock mechanism that covers the opening and locks in the closed state, and a pressure valve 13 that is attached to the lid body 11 and adjusts the pressure in the pan 10 as a spout hole of the present invention, A pressure valve opening mechanism 15 for controlling the opening and closing of the pressure valve 13, a display operation unit 8 for performing operations such as start of rice cooking, timer reservation and heat retention, and a bottom heater 5 according to a rice cooking start signal from the display operation unit 8 Control side heater 6 and pressure valve opening mechanism 15 And a control unit 9. The control device 9 has storage means, and rice storage programs corresponding to various rice cooking menus are stored in the storage means. The rice cooking menu includes rice rice cooking menu, favorite rice cooking menu, burnt rice cooking menu, etc., and the corresponding rice cooking program heats the cooked food in the pan to a predetermined temperature and takes a predetermined time. A water absorption step of absorbing a predetermined amount of water into the cooked rice, a rising heating step of heating the water-absorbed cooked rice until it boils, a boiling maintenance step of maintaining the cooked rice in a boiling state, A steaming process for steaming the cooked rice after the boiling maintaining process, a heat retaining process for keeping the cooked rice cooked after the steaming process at a predetermined temperature, and the like are performed, and the above processes are sequentially performed. Among these rice cooking processes, in the rising heating process and the boiling maintenance process, the inside of the pan is pressurized to atmospheric pressure or higher, for example, about 1.1 to 2.2 atmospheres, and rice cooking is executed.

  The main body 2 includes a bottomed box type outer case 3 and an inner case 4 accommodated in the outer case 3 and in which the pot 10 is accommodated. A gap is formed, and a control circuit board or the like (not shown) constituting the control device 9 is disposed in the gap. The inner case 4 is provided with a bottom heater 5 at the bottom 4a and a side heater 6 at the side 4b. As the bottom heater 5, an electromagnetic induction coil wound in a donut shape is used. As the side heater 6, a heater in which a heating wire is covered with a heat-resistant member is used. The bottom 4a is provided with a pan bottom temperature sensor 7 composed of a thermistor for detecting the pan bottom temperature.

  As shown in FIG. 1, the main body 2 is provided with a display panel 8 a that displays various rice cooking menus on the front surface 2 a and a display operation unit 8 that includes operation buttons for selecting and setting the rice cooking menu. .

  As shown in FIG. 2, the pan 10 is made of a relatively deep bottom container into which a predetermined amount of rice to be cooked made of rice and water is put, and is made of a clad material of aluminum and stainless steel.

  As shown in FIG. 2, the lid 11 includes an inner lid 12 that closes the opening of the pot 10, an outer lid 20 that closes the entire opening of the main body 2, and the like. One end of the lid 11 is pivotally supported on one end of the main body 2 by a pivot 11 </ b> A, and the other end is locked to the other end of the main body 2 by a lock mechanism 21. The inner lid 12 has a pressure valve 13 at its upper part, a pressure valve opening mechanism 15 for forcibly opening the pressure valve 13, and the pressure in the pot 10 when the pressure in the pot 10 rises to an abnormal pressure of a predetermined value or more. A safety valve (not shown) for releasing steam to the outside, an inner lid heater 19 for heating the inside of the pan 10 from above, and the like are provided.

Among these components, the inner lid heater 19 is a heater in which a heating wire similar to the side heater 6 is covered with a heat-resistant member. 2 and 3, the pressure valve 13 is mounted on the valve seat 13a in which a valve hole 13 ₁ having a predetermined diameter is formed, and the valve hole 13 ₁ is closed. And a cover 13b that restricts the movement of the ball 14 and holds it on the valve seat 13a. The ball 14 has a predetermined weight, to close the valve hole 13 ₁ by its own weight.

  As shown in FIG. 3, the pressure valve opening mechanism 15 includes a cylinder 15a around which an electromagnetic coil is wound, a plunger 15b that slides in the cylinder by excitation of the electromagnetic coil, and moves the ball 14, and It consists of a spring and an operating rod 15b 'mounted at the tip. The operating rod 15b 'is supported by a sealing member 15c having elasticity.

The pressure valve opening mechanism 15 is controlled by the control device 9. That is, when the electromagnetic coil is excited based on a command from the control device 9, the plunger 15b protrudes from the cylinder 15a, the operating rod 15b 'collides with the ball 14, and pushes the ball 14 in the lateral direction. The extrusion, ball 14 is moved from the valve seat 13a, the valve hole 13 ₁ is forcibly opened. Further, in this open state, when excitation to the electromagnetic coil is stopped, the plunger 15b is pulled back into the cylinder 15a by a spring force, and this pulling back eliminates the force by which the plunger 15b pushes the ball 14 in the lateral direction. the ball 14 returns to the valve seat 13a by its own weight, the valve hole 13 ₁ is closed by the ball 14. Since the valve hole of this pressure valve spouts the rice ball produced | generated in the pan at the time of rice cooking, it is also a rice hole ejection hole.

A steam temperature sensor S for measuring the temperature of steam ejected from the valve hole 13 ₁ is attached to the upper part of the pressure valve 13.

  As shown in FIG. 2, the inner lid 12 is provided with a pocket storage chamber (hereinafter referred to as a storage chamber) 26 for temporarily storing a pocket on the upper surface thereof. The storage chamber 26 is formed of a chamber of a predetermined size surrounded by a partition wall standing at a predetermined length upward from the upper surface of the inner lid 12 and opened upward. Further, one end of the storage chamber 26 communicates with the pressure valve 13, and the other end communicates with a steam flow passage of a storage cap (hereinafter referred to as storage cap) 25 as a storage tank of the present invention described later. Further, the storage chamber 26 communicates with a negative pressure valve (not shown), and the stored rice bowl is returned to the pan 10 as the negative pressure valve is opened.

  In this storage chamber 26, a heater heater 27 is installed as a heating means of the present invention that burns the rice bowl so that the stored rice bowl is heated to produce a burning odor. It has become. Accordingly, the rice cake flowing out from the pressure valve 13 is given a burning odor when passing through the storage chamber 26 and is temporarily stored in the storage cap 25. Further, when the amount of the rice cake stored in the storage cap 25 reaches a predetermined amount, the return valve V in the cap is opened to return to the storage chamber 26 and returned from the storage chamber into the pot 10. The rice balls returned to the pan 10 have a burnt smell, so the cooked rice has a burnt smell. In this embodiment, a storage chamber, generally a heater, is provided in the lid, but it may be provided in the main body.

  The inner lid 12 is fitted with an inner lid packing 18 on the outer periphery thereof so as to be in contact with the opening of the pan 10 and sealed. As shown in FIG. 4, the inner lid packing 18 has a circular hole 18 </ b> A having a diameter slightly smaller than the diameter of the disk-shaped inner lid 12 and a ring-shaped attachment on the outer peripheral edge of the inner lid 12. It has a mounting portion 18B that is attached via the frame 16, and a seal portion 18C that comes into contact with the opening of the pan 10 and seals the opening. The whole is formed of a donut-shaped ring, and has heat resistance and elasticity. It is formed with the silicon material which has.

The mounting portion 18B has a concave groove 18B ′ in which the ring-shaped mounting frame 16 is mounted, and is formed on the outer periphery of the circular hole 18A. The concave groove 18B ′ includes a substantially flat annular groove bottom portion 18a extending outward from the circular hole 18A, and a cylinder erected substantially perpendicularly from an end of the groove bottom portion on the circular hole 18A side. The wall 18b and the extending portion 18a ′ extending from the groove bottom portion 18a are configured. The cylindrical wall 18b is formed with a hook-like locking claw 18b ′ that protrudes outward from the top and is bent downward. The seal portion 18C is formed in a substantially U shape extending further from the extending portion 18a ′ of the groove bottom portion 18a. The U-shaped seal portion 18C is formed by a spring piece portion 18d extending from the extending portion 18a ′ and corresponding to the U-shaped bottom portion, and an elastic seal portion 18e extending from the spring piece portion. The elastic seal portion 18e has a tip contact portion 18 ₁ that contacts the inner wall 10a of the pan 10 and an intermediate contact portion 18 ₂ that contacts the curved portion 10b between the inner wall 10a and the pan flange 10c.

The mounting frame 16 is fitted in the concave groove 18B ′ and is in contact with the bottom surface of the groove bottom portion 18a, a body portion 16b extending upward from the bottom portion, and a flat top portion provided on the body portion. 16c, and is formed of a resin molded body having a heat resistance and a predetermined mechanical strength. The mounting frame 16, the flat surface of the top portion 16c, the female screw hole 16 ₁ hanging down toward the bottom portion 16a is engraved from the flat surface. Also, the locking groove 16 ₂ is formed on the flat surface of the top portion 16c. Further, an H-shaped engaging portion 16b ′ having a locking groove 16 ₃ is formed on the side surface of the body portion 16b, that is, on the surface side of the cylindrical wall 18b. The 'A locking groove 16 _3, the locking claw 18b provided on the top of the cylindrical wall 18b' H-type engagement portion 16b of is locked.

To attach the inner lid packing 18 to the inner lid 12, first, the ring-shaped attachment frame 16 is attached to the inner lid packing 18. For this mounting, the ring-shaped mounting frame 16 is placed on the top of the cylindrical wall 18b of the inner lid packing 18, and the mounting frame 16 is pressed downward. By this pressing, the cylindrical wall 18b is bent inward by its elastic force, and the mounting frame 16 can be inserted downward. When the bottom 16a of the mounting frame 16 is pressed to a position where it contacts the bottom surface of the concave groove 18B ', the restoring force of the cylindrical wall 18b returns to the original position, and at this timing, the top locking claw 18b' is moved to H. It is locked in the engaging groove 16 ₃ of the mold engaging portion. By this locking, the inner lid packing 18 is fixed to the mounting frame 16. Then, the inner lid gasket 18 is fixed by screwing the female screw hole 16 ₁ in the male screw 17 provided at the contact is allowed to the outer peripheral edge to the outer peripheral edge of the inner lid 12 and mounting frame 16 fixed.

  According to the inner lid packing 18, the U-shaped seal portion 18C has a spring piece portion 18d corresponding to the U-shaped bottom portion, and an elastic seal extending from the spring piece portion 18d. When the lid 11 closes the opening of the main body 2, the elastic seal portion 18 e of the U-shaped seal portion 18 C resists the spring force of the spring piece portion 18 d. Airtightness is ensured by closely contacting the surface of the inner wall 10a of the pot 10 and the inner surface of the curved portion 10b. Therefore, there is almost no steam leakage from the inside of the pan 10, and loss of heat energy can be minimized, so that energy saving can be achieved. Further, since the inner lid packing 18 is fixed to the inner lid 12 with the attachment frame 16 interposed, the inner lid packing 18 has an attachment structure in which the inner lid packing 18 having elasticity is supported by the attachment frame 16 having high mechanical strength. 18 can be firmly fixed. Furthermore, since the attachment frame 16 and the inner lid packing 18 can be attached and removed without using a tool, the old inner lid packing can be easily replaced.

  As shown in FIG. 2, the outer lid 20 is formed of a decorative cover that covers the inner lid 12, the pressure valve 13 mounted on the inner lid, the pressure valve opening mechanism 15, and the like. The outer lid 20 is provided with a release button 22 for releasing the lock mechanism 21 of the lid 11 at one end. In addition, the outer lid 20 is provided with a mounting portion 24 on the pivot 11A side of the other end portion. The mounting portion 24 is formed of a bottomed recessed hole having a size that allows the storage cap 25 to be detachably inserted, and is formed in a frame portion that supports the outer lid 20. In addition, the mounting portion 24 is formed with a mounting hole 24a into which a discharge cylinder 25a of a storage cap 25 described later is press-fitted. An annular seal member is attached to the mounting hole 24a so as to be in pressure contact with the outer peripheral surface of the discharge cylinder 25a so that the steam in the pan 10 does not leak to the outside.

  The storage cap 25 includes a discharge cylinder 25a that discharges steam and the like discharged from the pressure valve 13 and the like, an empty chamber 25b that stores a portion of the umami component, and a steam discharge port 25c that discharges steam to the outside. At the bottom of the empty room 25b, there is provided a bee return valve V for returning the stored bee into the pot 10. When the steam is ejected from the pressure valve 13, the umami component is led out from the pan through the pressure valve 13 together with the steam and stored in the empty chamber 25 b of the storage cap 25. When the amount of rice stored in the empty chamber 25b reaches a predetermined amount, the return valve V is opened and a negative pressure valve (not shown) provided on the inner lid 12 is opened, whereby the rice cake enters the pot 10. Returned.

  Next, the configuration of the control device 9 will be described with reference to FIG. FIG. 5 is a control block diagram constituting the control device.

  The control device 9 is a CPU for performing various arithmetic processes, a storage means including a ROM and a RAM for storing various data and a rice cooking program, a rice cooking menu detection circuit for detecting a selected rice cooking menu, and a pressure valve opening / closing time. Valve opening / closing timer, counter for counting the number of times the pressure valve is opened / closed, a heating control circuit for controlling the heating temperature and heating time in the pan, a heating control circuit for heating the rice bowl, and a display displayed on the display panel A display panel control circuit for controlling the screen, a pressure valve opening mechanism driving circuit for controlling the opening / closing timing of the pressure valve by driving the pressure valve opening mechanism, and the like are provided.

  The storage means stores rice cooking programs corresponding to various rice cooking menus. The rice cooking menu includes rice rice cooking menu, favorite rice cooking menu and burnt rice cooking menu, etc., and the rice cooking programs corresponding to each menu are water absorption process, rising heating process, boiling maintenance process, steaming process, It is configured to include an additional cooking process.

Various commands are input to the control device 9 from the menu key 8 ₁ , start key 8 ₂ , reservation key 8 _3, etc. of the display operation unit 8. Similarly, the detected values are input to the control device 9 from the pan bottom temperature sensor 7, the steam temperature sensor S, and the like. Further, the control device 9 is connected to the bottom heater 5, the side heater 6, the inner lid heater 19, the generally heater 27, the display panel 8a, the pressure valve opening mechanism 15, and the like.

  Next, with reference to FIG. 6, the cooked rice in a rice cooking process is demonstrated. FIG. 6 is a chart showing temperature changes in the pan, pressure valve control, heater control and the like in the rice cooking process.

  When the display operation unit 8 is operated and a rice cooking menu is selected from the rice cooking menu displayed on the display panel 8a, the control device 9 performs the bottom heater 5, the side heater 6 and the pressure valve according to the rice cooking program. 13, the cooked rice in the pan 10 is heated to a predetermined temperature, and a water absorption step I for absorbing a predetermined amount of moisture to the cooked rice over a predetermined temperature and time, the absorbed cooked rice Is heated up to the boiling stage II, the boiling maintaining process III for maintaining the cooked rice in a boiling state, and the steaming process IV for steaming the cooked rice after the boiling maintaining process is performed. Among these rice cooking processes I to IV, in the water absorption process I, the cooked food is absorbed by heating, for example, at 60 ° C. for 15 minutes, and in the start-up heating process II and the boiling maintenance process III, the inside of the pan is set at a predetermined pressure. For example, the pressure is increased to 1.2 atm to cook rice. And in this boiling maintenance process III, the pressure valve 13 is forcibly opened once or a plurality of times, and the pressure in the boiling pan 10 is lowered at a stroke so as to be close to the atmospheric pressure. The opening of the pressure valve 13 causes a bumping phenomenon in the pan and the rice is vigorously stirred. In addition, when the pressure valve 13 is opened, the rice bowl generated in the pan 10 passes through the storage valve 26 through the pressure valve 13 and is stored in the storage cap 25. When the burnt menu is selected in the rice cooking menu, the heater 27 is energized in the boiling maintenance process III, and the rice that passes through the storage chamber 26 is heated by the heater 27 and is burnt. It smells and is stored in the storage cap 25. Of course, the burning smell is also attached to the tow stored in the storage chamber 26 and the tow temporarily stored in the storage cap 25 through the return valve V.

When the container stored in the storage cap 25 reaches a predetermined amount, the return valve V in the cap is opened, and the container returns to the storage chamber 26 and is returned from the storage chamber 26 into the pot 10. The rice balls returned to the pan 10 have a burnt smell, so the cooked rice has a burnt smell. After completion of the boiling maintenance process III, the process proceeds to the steaming process. However, the energization of the heater 27 is continued until the steaming process IV _{1 in the} first half of the steaming process. In the additional cooking step IV ₂ , the bottom heater 5 and the inner lid heater 19 are energized, and the cooking of the cooked rice in the pan 10 is further continued.

  As mentioned above, although the pressure type rice cooker of one Embodiment of this invention was demonstrated, this invention is not limited to this pressure type rice cooker, It can apply also to a normal non-pressure type rice cooker. .

FIG. 1 is a front view of a pressure rice cooker according to an embodiment of the present invention. FIG. 2 is a longitudinal sectional view of the pressure rice cooker of FIG. FIG. 3 is an enlarged view of the pressure valve opening mechanism of FIG. FIG. 4 is an enlarged view of a portion X in FIG. FIG. 5 is a control block diagram constituting the control device. FIG. 6 is a characteristic diagram showing changes in temperature and pressure in the rice cooking process.

Explanation of symbols

1 Pressure rice cooker (rice cooker)
2 Rice cooker body (main body)
DESCRIPTION OF SYMBOLS 3 Outer case 4 Inner case 5 Bottom heater 6 Side heater 7 Pan bottom temperature sensor 8 Display operation part 9 Control apparatus 10 Pan 11 Cover body 12 Inner lid 13 Large jet hole (pressure valve)
14 Ball 15 Pressure valve release mechanism 16 Mounting frame 18 Inner lid packing 19 Inner lid heater 20 Outer lid 25 Large storage tank (storage cap)
26 Oneba Reservoir (Reservoir)
27 rice heating means (rice heater)

Claims (4)

A pan into which a cooked rice containing water and rice is charged, a heating means for heating the cooked rice in the pan, a lid for closing the opening of the pan, and the heating means to control the pan In a rice cooker equipped with a control device that performs a rice cooking process of cooking rice to be cooked inside,
In the lid body, there is a ladle ejecting hole from which the ladle in the pan is ejected, a storage chamber for temporarily storing the ladle from the ejection hole, and the ladle stored in the reservoir chamber in the ladle. And a return valve to return to
A heating means is provided in the storage chamber for heating the rice produced in the pan to add a burning odor, and the control device produces a rice bowl produced in the pan during the rice cooking process. Take out a part of the rice cake from the pan to the storage chamber, heat it with the heating means in the first half of the boiling maintenance step and the steaming step, add a burning odor, then return to the pan again and continue cooking rice A rice cooker characterized by doing. The said spray hole is also used as a steam hole for jetting steam in the pan, and the return valve is also used as a negative pressure valve that opens when the inside of the pan becomes negative pressure. 1. The rice cooker described in 1 . 2. The rice cooker according to claim 1 , wherein the lid body is provided with a storage tank that temporarily stores a rice bowl generated in the pan, and the storage tank communicates with the storage chamber. . 4. The rice cooker according to claim 3 , wherein the storage tank is fixed to the lid by a detachable fixing means.

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