JP2011244836A - Rice cooker and oven container used for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice cooker enabling simple oven heating and an oven container used for the same.SOLUTION: The oven container 18, which is formed of earthenware having a larger heat capacity than metal and is also provided with a flange part 19, insulators 22a, 22b and 22c and an insulator 23 on the outer peripheral surface, is stored in the inner pan 3 of the rice cooker which enables the same rice-cooking operation as usual. On the occasion, the flange part 19, the insulators 22a, 22b and 22c and the insulator 23 come in contact with the inside of the inner pan 3, and thus a space 24 having a uniform distance is formed between the inner pan 3 and the oven container 18. Accordingly, the whole of the oven container 18 can be heated almost uniformly with the air in the space the whole of which is heated almost uniformly. As the result, the internal temperature of the oven container 18 becomes almost uniform, so that bread having baked spots seeming delicious on the surface can be baked.

Description

  The present invention relates to a rice cooker capable of oven heating and an oven container used therefor.

  As an electric rice cooker having a control mode for simply baking bread, there is an electric rice cooker with a bread baking mode disclosed in Japanese Patent Application Laid-Open No. 2004-275478 (Patent Document 1). This electric rice cooker with bread baking mode includes a case main body, an inner pot that is detachably mounted in the upper opening of the case main body, and a lid member that opens and closes the upper opening of the case main body. When the rice cooking menu is selected, an induction heating (IH) coil is driven by a microcomputer (MPU) to heat the inner pot in which rice and water are put, and the temperature is controlled. In this way, rice is cooked, steamed and kept warm.

  On the other hand, when the bread fermentation mode is selected, the inner pot in which the kneaded bread dough is put is heated and controlled by the MPU, and the bread dough is fermented and kept warm. Subsequently, when the bread baking mode is selected, the MPU controls the IH coil, the side heater and the upper heater, and controls the heating of the inner pot in which the fermented dough is placed. Here, the side heater is a heater for heat insulation provided on a side portion of the inner hook. The upper heater is a heater that heats the inner lid of the lid member to prevent condensation. In this way, bread baking and bread heat insulation are performed.

  However, the conventional electric rice cooker with bread baking mode disclosed in Patent Document 1 has the following problems.

  That is, in the electric rice cooker with bread baking mode, the fermented bread dough is directly put into the inner pot for cooking rice and heated by the IH coil. In this case, the temperature of the inner pot is locally high immediately above the IH coil. Therefore, there is a problem that the portion becomes overheated and burnt, and the entire bread cannot be baked uniformly. This problem occurs when not only bread but also food such as Satsuma lees is directly placed in the inner pot and heated in an oven. The baked state between the overheated part and the non-overheated part is unavoidable. The head increases.

  That is, since the rice cooker is usually developed for cooking rice, the inner pot (inner pot) is directly heated to increase the heating efficiency and realize high heating power. For this reason, when heating a semi-solid material such as bread that is not soaked in water, thermal diffusion is poor and burnout tends to occur.

  Therefore, in the electric rice cooker with bread baking mode, during the oven heating, in addition to the IH coil, the side heater and the upper heater are also driven and controlled, and the heating control by the MPU becomes complicated. There is a problem. In addition, the above-mentioned problem arises similarly in the case of the rice cooker of the structure which mounts the said inner pot directly on a heater and heats it with heat conduction.

JP 2004-275478 A

  Then, the subject of this invention is providing the rice cooker which can be oven-heated easily, and the oven container used for it.

In order to solve the above problems, the rice cooker of this invention is
An inner pot for cooking rice,
A rice cooker body in which the inner pot is stored;
While being arranged in the rice cooker body, a heating unit for heating the inner pot,
An oven container for performing oven heating and being housed in the inner pot so as to be able to be taken in and out,
When the oven container is housed in the inner pot, an air layer forming member is provided that forms an air layer between the inner pot and the oven container.

  According to the said structure, the oven container in which the foodstuff which performs oven heating was put is accommodated in the inner pot of a rice cooker, the said inner pot is heated with the heating part arrange | positioned in the rice cooker main body, and the said foodstuff is used. On the other hand, oven heating is performed. At that time, an air layer is formed between the inner pot and the oven container by the air layer forming member.

  Therefore, the oven container is wrapped with the air layer having a large heat capacity heated substantially uniformly through the inner pot, and the internal temperature of the oven container becomes substantially uniform. As a result, there is no overheated portion in the vicinity of the heating portion in the oven container as in the case where the food for oven heating is directly put in the inner pot, and the food in the oven container is not produced. Is heated substantially uniformly without scorching in the overheated part.

  In this way, the temperature of the whole food can be kept stable at a predetermined temperature, oven-cooking can be performed, and there are few burning spots and the surface of the food can be savory. It is.

  On the other hand, when cooking rice, the oven container is taken out from the inner pot of the rice cooker, rice and water are directly put into the inner pot, and the inner pot is heated by the heating unit as in the conventional case. To be done.

In the rice cooker of one embodiment,
The air layer forming member is
A flange portion that is provided at an upper end portion of the oven container, extends horizontally outward, and has a tip abutting against an inner wall of the inner pot when the oven container is housed in the inner pot; ,
The outer wall surface of the oven container and the inner wall surface of the inner pot provided on either the outer wall surface of the oven container or the inner wall surface of the inner pot when the oven container is stored in the inner pot. A space forming member that is in contact with the other and forms a space of a predetermined interval between the oven container and the inner pot.

  According to this embodiment, the upper end portion of the oven container is provided with a flange portion whose tip abuts against the inner wall of the inner pot when the oven container is stored in the inner pot. Either one of the outer wall surface of the oven container and the inner wall surface of the inner pot has the other of the outer wall surface of the oven container and the inner wall surface of the inner pot when the oven container is stored in the inner pot. A space forming member that abuts is provided. Therefore, an air layer having a predetermined gap is automatically formed between the inner pot and the oven container simply by storing the oven container in the inner pot.

In the rice cooker of one embodiment,
The oven container is provided with a handle used when the oven container is taken in and out of the inner pot.

  According to this embodiment, by holding the handle, the oven container can be taken in and out of the inner pan safely and with good operability without risk of burns and the like.

In the rice cooker of one embodiment,
A selection key for selecting the oven heating;
When the oven heating is selected by the selection key, a heating control unit that controls the heating operation of the inner pot by the heating unit so as to be different from the heating operation in the case of performing the rice cooking is provided.

  According to this embodiment, when the oven heating is selected, the heating control unit controls the heating operation of the inner pot by the heating unit to be different from the heating operation in the case of cooking rice. Like to do. Therefore, for example, the heating operation at the time of rice cooking by the heating control unit is controlled to 60 ° C. when supplying water, about 100 ° C. when cooking, and about 107 ° C. when steamed. Even if the safety device functions to obtain an ideal temperature of 180 ° C. during heating, it is possible to control the temperature in the oven container to be maintained at about 150 ° C. with, for example, 300 W of power. . Therefore, it becomes possible to perform ideal oven heating cooking with the structure of the conventional rice cooker.

In addition, this invention
Used in a rice cooker including an inner pot for cooking rice, a rice cooker body in which the inner pot is stored, and a heating unit that is arranged in the rice cooker body and heats the inner pot, and is heated by an oven An oven container that enables
While being stored in the inner pot of the rice cooker so that it can be taken in and out,
When housed in the inner pot, it has an air layer forming member that forms an air layer between the inner pot and the inner pot.

  According to the said structure, the oven container in which the food which performs oven heating was put is accommodated in the said inner pot of the well-known rice cooker marketed including an inner pot, a rice cooker main body, and a heating part, The said heating By heating the inner pot by the part, oven heating is performed on the food. At that time, an air layer is formed between the inner pot and the oven container by the air layer forming member.

  Therefore, the oven container is wrapped with the air layer having a large heat capacity that is heated substantially uniformly through the inner pot, and the internal temperature of the oven container becomes substantially uniform. As a result, the oven container does not have an overheated portion in the vicinity of the heating part in the oven container as in the case where the food for oven heating is directly put in the inner pot of the rice cooker. The food inside is heated substantially uniformly without scorching in the overheated part.

  In this way, the temperature of the whole food can be kept stable at a predetermined temperature, oven-cooking can be performed, and there are few burning spots and the surface of the food can be savory. It is.

  As is clear from the above, the rice cooker of the present invention stores the oven container in which the ingredients for oven heating are put in the inner pot, and heats the inner pot by the heating unit arranged in the rice cooker body. When the oven heating is performed on the food material, an air layer is formed between the inner pot and the oven container by the air layer forming member, so that the oven container is inserted through the inner pot. It can be wrapped with the layer of air having a large heat capacity heated substantially uniformly, and the internal temperature of the oven container can be made substantially uniform. Therefore, the inside of the oven container in the vicinity of the heating unit is not overheated, and the food material in the oven container can be prevented from being burnt in the overheated part.

  That is, according to the present invention, oven cooking is performed by keeping the temperature of the whole food material stably at a predetermined temperature so that there are few spots on the surface and the surface of the food material can be savory. be able to.

  Moreover, the oven container of this invention puts the foodstuff which performs oven heating, accommodates it in the inner pot of a rice cooker, heats the said inner pot with the heating part of the said rice cooker, and oven-heats with respect to the said foodstuff. When performing, since an air layer is formed between the inner pot and the oven container by the air layer forming member, the oven container is heated substantially uniformly through the inner pot and the heat capacity is large. It can be wrapped with a layer of air, and the internal temperature of the oven container can be made substantially uniform. Therefore, the inside of the oven container in the vicinity of the heating unit is not overheated, and the food material in the oven container can be prevented from being burnt in the overheated part.

  That is, according to the present invention, the temperature of the whole food is stably kept at a predetermined temperature and is baked only by putting the food to be oven-heated and storing it in the inner pot of a known rice cooker that is commercially available. It is possible to perform oven heating cooking that has few spots and can be applied to the surface of the food material with a delicious appearance.

It is a schematic sectional drawing in the rice cooker of this invention. It is a top view of the inner pot and oven container in FIG. It is AA 'arrow sectional drawing in FIG. It is sectional drawing of the inner pot and oven container different from FIG. 2 and FIG. It is a top view of the inner pot and oven container different from FIGS. It is BB 'arrow sectional drawing in FIG.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

-1st Embodiment FIG. 1: is a schematic sectional drawing in the rice cooker in which the oven heating of this Embodiment is possible.

  The rice cooker includes a rice cooker body 1, a lid 2 attached to the rice cooker body 1 so as to be openable and closable, and a rice-cooker body 1 that has a bottomed cylindrical inner pot that houses rice or water, for example. 3 is provided. The rice and water are examples of the object to be heated.

  The rice cooker body 1 has an outer case 4 and an inner case 5 in which the inner pot 3 is accommodated. The rice cooker body 1 is provided with a latch mechanism (not shown), and the lid 2 is releasably locked by the latch mechanism and is in a closed state. When the hook button 6 is pressed in this state, the latch mechanism is unlocked, and the lid 2 is opened by the urging force of a coil spring (not shown).

  A liquid crystal display unit 7 is provided on the front upper side of the outer case 4. An operation button 8 is provided above the liquid crystal display unit 7 in the outer case 4. The liquid crystal display unit 7 displays a cooking menu, cooking status, and the like, and the operation button 8 is pressed to change the display of the liquid crystal display unit 7 or select a cooking menu (rice cooking, oven heating, etc.).

  The inner case 5 is made of a material having heat resistance and electrical insulation, and a hole 5a is formed at the center of the bottom. A coil spring 9 is inserted into the hole 5 a of the inner case 5, and the lower end of the coil spring 9 is attached and fixed inside the bottom of the outer case 4, while the movable member 10 is attached to the upper end located in the inner case 5. It has been. Further, a contact-type temperature sensor 11 is attached to the upper part of the movable member 10. In addition, a heat transfer plate 12 is installed inside the bottom of the inner case 5 so as to surround the movable member 10, and the upper surface of the heat transfer plate 12 has a shape that can be in close contact with the bottom surface of the inner pot 3. . An annular heater 13 is embedded in the heat transfer plate 12, and the bottom 3 a of the inner pot 3 is heated by the heat of the heater 13 through the heat transfer plate 12.

  In the configuration of the inner case 5, the coil spring 9, the movable member 10, the temperature sensor 11, and the heat transfer plate 12, when the inner pot 3 is stored in the inner case 5, the temperature sensor 11 and the upper surface of the heat transfer plate 12 are connected to the inner pot 3. It contacts the outer surface (bottom surface) of the bottom 3a. At that time, since the coil spring 9 urges the movable member 10 upward, the temperature sensor 11 reliably contacts the bottom 3 a of the inner pot 3. Here, if the spring constant of the coil spring 9 is too large, the bottom 3 a of the inner pot 3 will be lifted from the heat transfer plate 12. Therefore, the spring constant of the coil spring 9 is adjusted so that the bottom 3 a of the inner pot 3 is in close contact with the upper surface of the heat transfer plate 12 and the temperature sensor 11 is in contact with the bottom 3 a of the inner pot 3. .

  The lid 2 includes an outer lid 14 that is rotatably supported by the rice cooker body 1 and an inner lid 15 that is detachably attached to the inner pan 3 side of the outer lid 14. When the lid 2 is closed, the gap between the inner lid 15 and the flange portion 3 b of the inner pot 3 is sealed by the packing 16. A control unit 17 receives an operation signal from the operation button 8 and controls the liquid crystal display unit 7, the heater 13, and the like.

  The inner pot 3 has an open upper end, an annular flange portion 3b provided around the opening, and a cylindrical peripheral wall portion 3c extending vertically downward from the inner peripheral edge of the flange portion 3b. And a bottom 3a that is curved and connected to the lower end of the peripheral wall 3c. The inner pot 3 is formed of a high heat conductive member such as aluminum, for example, and the inner surface is coated with a fluororesin for preventing adhesion of an object to be heated.

  The above configuration is exactly the same as the configuration of a known rice cooker.

  In this Embodiment, while being accommodated in the said inner pot 3 so that insertion / removal is possible, the oven container 18 which forms space between the inner surface of the inner pot 3 is provided. Hereinafter, the oven container 18 that is a feature of the present embodiment will be described in detail.

  FIG. 2 is an enlarged plan view of the inner pot 3 and the oven container 18 housed in the inner pot 3. 3 is a cross-sectional view taken along the line AA ′ in FIG. As described above, the oven container 18 is accommodated in the inner pot 3 so as to be put in and out. And when cooking rice, the oven container 18 is taken out from the inner pot 3, and rice and water are directly put into the inner pot 3. Moreover, when performing oven heating with this rice cooker, the oven container 18 is mounted | worn in the inner pot 3, and fermented bread dough is put in the oven container 18, for example, when baking bread.

  The oven container 18 has a cross-sectional shape similar to that of the inner pot 3 that is smaller than the inner pot 3. That is, the upper end portion of the oven container 18 is opened, and an annular flange portion 19 is provided around the opening. Furthermore, it has a cylindrical peripheral wall portion 20 that extends vertically downward from the inner peripheral edge of the flange portion 19, and a bottom portion 21 that is curved and connected to the lower end of the peripheral wall portion 20. When the oven container 18 is housed in the inner pot 3, the outer peripheral edge of the flange portion 19 comes into contact with the inner surface of the peripheral wall portion 3 c in the inner pot 3. The oven container 18 is made of, for example, pottery having a heat capacity larger than that of metal.

  In addition, three spherical insulators 22a, 22b, and 22c are provided on the outer peripheral surface of the peripheral wall portion 20 of the oven container 18 at equal intervals in the circumferential direction. When the oven container 18 is stored in the inner pot 3, the three insulators 22 a, 22 b and 22 c come into contact with the inner surface of the peripheral wall portion 3 c in the inner pot 3. Furthermore, a spherical insulator 23 is provided on the central outer surface of the bottom 21 of the oven container 18. When the oven container 18 is housed in the inner pot 3, the insulator 23 comes into contact with the inner surface of the bottom 3 a of the inner pot 3.

  Therefore, when the oven container 18 is stored in the inner pot 3 by the functions of the flange portion 19, the insulators 22 a, 22 b, 22 c and the insulator 23, the insulator 22 a is interposed between the inner pot 3 and the oven container 18. , 22b, 22c and the insulator 23, the space 24 is formed with a uniform interval. In this case, the distance between the inner pot 3 and the oven container 18 is preferably about 5 mm.

  That is, in the present embodiment, the flange portion 19, the insulators 22a, 22b, 22c and the insulator 23 constitute the air layer forming member and the space forming member in the claims.

  In the above configuration, when oven heating is performed, for example, when baking bread, an oven container 18 in which fermented bread dough is placed is mounted in the inner pot 3. When oven heating is selected by the operation button 8, the heater 13 is driven by the control unit 17 that receives the operation signal from the operation button 8, and the inner pot 3 is heated by the heat of the heater 13 through the heat transfer plate 12. The bottom 3a is heated. Furthermore, since the inner pot 3 is formed of a high heat conductive member as described above, the heat of the bottom 3a is quickly transmitted to the peripheral wall 3c, and the inner pot 3 is heated substantially uniformly.

  Then, the air in the uniform space 24 formed between the inner pot 3 and the oven container 18 is heated substantially uniformly. Further, the oven container 18 is heated substantially uniformly by the air between the inner pot 3 and the oven container 18 which are heated substantially uniformly as a whole. As a result, combined with the fact that the oven container 18 is formed of ceramics having a large heat capacity and the entire periphery of the oven container 18 is wrapped with air having a large heat capacity, the internal temperature of the oven container 18 becomes substantially uniform, and the bread dough It becomes possible to continue the whole temperature to a predetermined temperature of 100 ° C. or more for about 1 hour. Therefore, it is possible to bake bread that has few baking spots and has a surface that looks delicious.

  At that time, the outer peripheral edge of the flange portion 19 of the oven container 18 is merely in contact with the inner surface of the peripheral wall portion 3 c of the inner pot 3. Similarly, the insulators 22a, 22b, and 22c of the oven container 18 are simply in contact with the inner surface of the peripheral wall portion 3c of the inner pot 3, and the insulator 23 of the oven container 18 is simply in contact with the inner surface of the bottom portion 3a of the inner pot 3, respectively. is there. Therefore, when the air between the inner pot 3 and the oven container 18 is expanded by heating, the pressure is released from between the flange portion 19 of the oven container 18 and the peripheral wall portion 3c of the inner pot 3.

  Thus, with a simple structure, bread with a uniform baked finish can be baked safely.

  By the way, in the rice cooking mode for cooking rice and the oven heating mode for baking bread and sweets, the controller 13 controls the heater 13 based on the temperature signal from the temperature sensor 11 to set the temperature of the inner pot 3. Normally, in the rice cooking mode, the temperature in the inner pot 3 is kept at 60 ° C. when the rice is absorbed by water, the temperature in the inner pot 3 is raised to 100 ° C. when the temperature is raised, and the boiling state is maintained when the rice is cooked. Therefore, the temperature in the inner pot 3 is kept at about 100 ° C., and when the water in the inner pot 3 runs out and reaches 120 ° C., it shifts to steaming, and the temperature in the inner pot 3 is kept at about 107 ° C. during steaming. Be drunk.

  On the other hand, in the oven heating mode, it is ideal that the temperature in the oven container 18 is approximately 180 ° C. when uniform baking is applied to the surface of the food. However, in the rice cooker configuration in which the heater 13 control in the rice cooking mode as described above is the main, if the temperature in the oven container 18 is increased to about 180 ° C., a safety device such as a fuse functions. Temperature control becomes impossible.

  Therefore, in the present embodiment, in the oven heating mode, the temperature in the oven container 18 is maintained at 150 ° C., which is lower than 180 ° C., with power of 300 W lower than 1 KW, which is the amount of heat when cooking rice. The heater 13 is controlled.

  That is, the operation button 8 is used to switch between the rice cooking mode and the oven heating mode. And when rice cooking mode is selected, the heater 13 is controlled by the control part 17 so that each operation | movement of the said water absorption, temperature rising, cooking, and steaming is possible. Further, when the oven heating mode is selected, the heater 13 is controlled by the controller 17 so that the temperature in the oven container 18 is maintained at 150 ° C. with an electric power of 300 W.

  As described above, according to the present embodiment, the inner pot 3 of the rice cooker capable of performing the same rice cooking operation as the conventional one is formed with, for example, pottery having a heat capacity larger than that of metal, and is stored in the inner pot 3. When the oven container 18 provided with the flange portion 19, the insulators 22a, 22b, 22c and the insulator 23 which are in contact with the inner surface of the inner pot 3 to form the space 24 is simply housed, The food can be oven heated.

  In that case, the space 24 which has a uniform space | interval can be formed between the said inner pot 3 and the oven container 18, and the air in the said space 24 can be heated substantially uniformly. Therefore, the entire oven container 18 can be heated substantially uniformly by the air in the space 24 that is heated substantially uniformly. As a result, combined with the fact that the oven container 18 is formed of ceramics having a large heat capacity and the entire periphery of the oven container 18 is wrapped with air having a large heat capacity, the internal temperature of the oven container 18 becomes substantially uniform, and the bread dough It becomes possible to continue the whole temperature at about 150 ° C. of 100 ° C. or more for about 1 hour. Therefore, it is possible to bake bread that has few baking spots and has a surface that looks delicious.

  In the present embodiment, the oven heating using the oven container 18 is described as an example of baking bread. However, it goes without saying that it is possible to bake not only bread but also Satsuma candy and sweets.

-2nd Embodiment The rice cooker main body, cover body, and inner pot in this Embodiment have the same structure as the rice cooker main body 1, cover body 2, and inner pot 3 in the said 1st Embodiment. Therefore, detailed description of the rice cooker body, the lid, and the inner pot is omitted. Moreover, in the following description, the same number as the number used in the first embodiment is used as necessary for the inner pot.

  The present embodiment is characterized in that a handle is provided in an oven container that is housed in the inner pot 3 so as to be able to be taken in and out and that forms a space with the inner surface of the inner pot 3. The basic structure of the oven container in the present embodiment is the same as that of the oven container 18 in the first embodiment. Therefore, the oven containers in the present embodiment are given the same numbers as in the first embodiment, and detailed descriptions thereof are omitted.

  FIG. 4 is a partial cross-sectional view of the inner pot 3 and the oven container 18 housed in the inner pot 3. However, FIG. 3 of the first embodiment shows a cross section in two planes, a plane passing through the insulators 22a and 23 and a plane passing through the insulators 23 and 22c, whereas FIG. A cross section in one plane passing through 22a and 23 is shown. Therefore, the insulator 22c does not appear in FIG.

  As shown in FIG. 4, the handle 25 is configured by forming rings 25a at both ends of a semicircular curved rod-like body having substantially the same diameter as the circular opening provided at the upper end of the oven container 18. ing. Then, by inserting the rings 25 a formed at both ends of the handle 25 into two holes formed in the flange portions 19 of the oven container 18 at positions facing each other, the handle 25 is inserted into the flange of the oven container 18. The part 19 is swingably attached. In FIG. 4, a state where the handle 25 is tilted away is shown by a solid line, and a state of the handle 25 when the oven container 18 is lifted by the handle 25 is shown by a broken line.

  Therefore, according to the present embodiment, the user can put the oven container 18 in and out of the inner pot 3 safely and with good workability without the risk of burns and the like by holding the handle 25. it can.

  The function of the oven container 18 in the present embodiment is exactly the same as in the case of the first embodiment.

  Moreover, in this Embodiment, the said handle 25 is attached to the flange part 19 of the oven container 18 so that rocking | fluctuation is possible by the ring 25a. However, the present invention is not limited to this, and it is only necessary to have a configuration in which the oven container 18 can be taken in and out of the inner pot 3 safely and with good workability. For example, both ends of the handle can be formed in a hook shape, and the handle can be configured to be detachable from the oven container 18.

-3rd Embodiment The rice cooker main body, cover body, and inner pot in this Embodiment have the same structure as the rice cooker main body 1, cover body 2, and inner pot 3 in the said 1st Embodiment. The oven container that is detachably stored in the inner pot and that forms a space with the inner surface of the inner pot has the same basic configuration as the oven container 18 in the second embodiment. Yes. Therefore, detailed description of the rice cooker body, the lid, the inner pot, and the oven container will be omitted. In the following description, the same numbers as those used in the first embodiment and the second embodiment are used as necessary for the inner pot and the oven container.

  FIG. 5 is a plan view of the inner pot 3 and the oven container 18 housed in the inner pot 3. 6 is a cross-sectional view taken along the line BB ′ in FIG.

  As shown in FIGS. 5 and 6, in the present embodiment, when the oven container 18 is mounted in the inner pot 3 at equal intervals in the circumferential direction on the flange portion 19 of the oven container 18, 3 and the oven container 18 are provided with a vent hole 26 for communicating with the outside a space 24 formed between them. In this way, when a non-uniform temperature location occurs in the space 24, the air that is higher in temperature than the other locations and rises upward in the space 24 is positively exposed to the outside from the vent 26. Therefore, the temperature uniformity in the space 24 is increased.

  Therefore, as a result, the uniformity of the temperature in the oven container 18 can be improved, and the oven heating can be performed more stably and with high quality.

  In the present embodiment, a handle 25 is provided in the oven container 18. However, the handle 25 is not necessarily provided.

  Moreover, in each said embodiment, the said oven container 18 is formed with the earthenware with a larger heat capacity than a metal. However, the oven container 18 of the present invention is not limited to pottery. The point is that it has a large heat capacity, can maintain the temperature of the oven vessel 18 at a constant temperature for a long time and has heat resistance, and is a metal such as iron, aluminum, and stainless steel. Can be used if the thickness is devised. Moreover, heat resistant resin may be sufficient and the material of the oven container 18 is not specifically limited.

  Further, in each of the above embodiments, the insulators 22a, 22b, 22c and the insulator 23, which are the space forming members, have no heat conduction from the inner pot 3 to the oven container 18, and the inner pot 3 and the oven container 18 It is installed so that a space 24 having a substantially uniform interval can be secured between them, and is configured to make point contact with the inner pot 3 and the oven container 18 in a substantially spherical shape. Note that the insulators 22a, 22b, 22c and the insulator 23 are not limited as long as they have low thermal conductivity and can secure a space 24 having a substantially uniform spacing between the inner pot 3 and the oven container 18. The material and other shapes can be used. Moreover, you may attach the insulators 22a, 22b, 22c, and the insulator 23 not only to the oven container 18 side but to the inner pot 3 side. In short, the space forming member is provided on any one of the outer wall surface of the oven container 18 and the inner wall surface of the inner pot 3, and if a space with a predetermined interval can be formed between the oven container 18 and the inner pot 3, The material, shape, number of installations and installation locations are not particularly limited.

  Here, in the case where the space forming member installed between the inner pot 3 and the oven container 18 instead of the insulators 22a, 22b, 22c and the insulator 23 has thermal conductivity, the space formation is performed. Since heat is conducted from the inner pot 3 to the oven container 18 through the member, the vicinity of the space forming member in the oven container 18 is locally heated. For this reason, the vicinity of the space forming member is overheated, and the internal temperature of the oven container 18 is unlikely to be substantially uniform.

  Moreover, in each said embodiment, the heat exchanger plate 12 with which the annular heater 13 was embedded was installed inside the bottom part of the said inner case 5, and an inner pot was passed through the heat exchanger plate 12 with the heat | fever of the heater 13. 3 is heated at the bottom 3a. However, the heating structure of the inner pot 3 is not limited to the above structure. For example, an induction coil may be installed inside the bottom of the inner case 5 and the inner pot 3 may be induction heated by the induction coil. Absent. That is, the rice cooker used for this invention should just be a rice cooker in which the rice cooking operation | movement similar to the past is possible, and is not limited to the heating structure of the inner pot 3. FIG.

  Further, the space 24 formed between the inner pot 3 and the oven container 18 is preferably 5 mm, and when the thickness is reduced to 3 mm and 2 mm, the air layer in the space 24 is also thinned to reduce the heat capacity. 18 heating becomes non-uniform. On the contrary, if the temperature is higher than 5 mm, it takes too much time until the inside of the oven container 18 is heated to a desired temperature.

  Moreover, in each said embodiment, the said inner pot 3 and the oven container 18 accommodated in the inner pot 3 are formed in the shape of the pot. However, the present invention is not limited to this, and the bottom may be formed in a hemispherical shape or the like. In short, the oven container 18 has a cross-sectional shape similar to that of the inner pot 3 that is made slightly smaller than the inner pot 3, and is substantially between the inner pot 3 when housed in the inner pot 3. Any shape can be used as long as the spaces 24 with uniform spacing can be formed.

  Moreover, in each said embodiment, the rice cooker provided with the oven container 18 accommodated in the rice cooker main body 1 cover body 2, the inner pot 3, and the inner pot 3 so that insertion / extraction is possible is provided. However, you may provide the oven container 18 comprised so that withdrawing / inserting in the inner pot 3 of the rice cooker already marketed is possible.

1 ... Rice cooker body,
2 ... the lid,
3 ...
3a ... Bottom of inner pot,
3b ... Flange part of inner pot,
3c ... The peripheral wall of the inner pot,
4 ... Outer case,
5 ... Inner case,
11 ... temperature sensor,
12 ... heat transfer plate,
13 ... Heater,
17 ... control unit,
18 ... Oven container,
19 ... the flange part of the oven container,
20 ... The peripheral wall of the oven container,
21 ... The bottom of the oven container,
22a, 22b, 22c, 23 ... insulator,
24 ... space,
25 ... handle,
26: Vent.

Claims (5)

An inner pot for cooking rice,
A rice cooker body in which the inner pot is stored;
While being arranged in the rice cooker body, a heating unit for heating the inner pot,
An oven container for performing oven heating and being housed in the inner pot so as to be able to be taken in and out,
A rice cooker comprising an air layer forming member that forms an air layer between the inner pot and the oven container when the oven container is stored in the inner pot. In the rice cooker according to claim 1,
The air layer forming member is
A flange portion that is provided at an upper end portion of the oven container, extends horizontally outward, and has a tip abutting against an inner wall of the inner pot when the oven container is housed in the inner pot; ,
The outer wall surface of the oven container and the inner wall surface of the inner pot provided on either the outer wall surface of the oven container or the inner wall surface of the inner pot when the oven container is stored in the inner pot. A rice cooker comprising: a space forming member that abuts against the other and forms a space at a predetermined interval between the oven container and the inner pot. In the rice cooker according to claim 1 or claim 2,
The above-mentioned oven container is provided with a handle that is used when the oven container is taken in and out of the inner pot. In the rice cooker as described in any one of Claim 1- Claim 3,
A selection key for selecting the oven heating;
A heating control unit for controlling the heating operation of the inner pot by the heating unit to be different from the heating operation in the case of cooking rice when the oven heating is selected by the selection key; A featured rice cooker. Used in a rice cooker including an inner pot for cooking rice, a rice cooker body in which the inner pot is stored, and a heating unit that is arranged in the rice cooker body and heats the inner pot, and is heated by an oven An oven container that enables
While being stored in the inner pot of the rice cooker so that it can be taken in and out,
An oven container comprising an air layer forming member that forms an air layer with the inner pot when stored in the inner pot.

Images