JP2012196247A - Rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the following problem that in a rice cooker having a heat radiation plate mounted to a lid body, when a gluten container for storing gluten and returning the gluten to an inner pot from a gluten returning hole, is mounted to the heat radiation plate, the gluten returning hole is stuffed with soybean hulls or the like when cooking rice with mixed grains or the like.SOLUTION: Steam generated in rice cooking is led from a steam port 5a of the gluten container 5 mounted to the heat radiation plate 4 through a guide tube 9, and is discharged from an exhaust port 11 of the lid body 3 through a filter portion 9b. The gluten separated from a part of the steam let into the gluten container 5 is stored in a collection recessed portion 13 of the gluten container 5 once, and is returned into the inner pot 1 from the gluten returning hole 5d. When cooking the rice with mixed grains or the like, the soybean hulls or the like are included in bubbles ascending during the rice cooking, there are cases wherein the hulls or the like flow into the guide tube 9 from the steam port 5 of the gluten container 5. The filter portion 9b of the guide tube 9 blocks that the hulls or the like flowing into the guide tube flow into the gluten container 5.

Description

  The present invention relates to a rice cooker that prevents clogging of a part to be cooked in a return hole during rice cooking.

  There is known a rice cooker equipped with a rice bowl container that is attached to a lid that is supported by the rice cooker body so as to be opened and closed, and that separates the rice bowl from the steam generated by rice cooking and stores it inside (see, for example, Patent Document 1). ). In such a rice bowl container, when rice cooking progresses and shifts to murashi, a rice bowl return hole is formed for returning the rice bowl stored inside to the inner pot. On the other hand, in recent rice cookers, it is common that the heat radiating plate is detachably attached to the lid. With the attached heat radiating plate, the heat in the inner pot is confined to the rice in the inner pot. Heat can be applied, and the heat sink can be removed and washed after use.

JP H10-99192 A

  However, when a conventional rice bowl container is attached to a heat sink, the distance between the rice bowl container and the inner pot becomes closer, and foam that has risen due to rice cooking may overflow into the container. In recent years, in particular, there is also a demand to cook miscellaneous rice with a rice cooker, and when such miscellaneous rice is cooked, the soy skin contained in the foam flows into the container and clogs the return hole. As a result, it has been found that there is a new problem that the accumulated rice balls may not be returned to the inner pot.

  The present invention has been made to solve the above-described problems, and even when the container is attached to a heat sink, a part of the cooking object does not clog the return hole. The purpose is to provide a rice cooker.

  The rice cooker of the present invention includes a rice cooker main body in which the inner pot is accommodated, a lid body that is supported by the rice cooker body so as to be opened and closed, and is detachably attached to the lid body and covers the upper surface opening of the inner pot. A flat plate-like heat radiating plate in which an opening for mounting is formed; a tote container that is attached to the opening for mounting of the heat radiating plate and has a steam port communicating with the inner pot and a screw return hole at the bottom; The container is characterized in that a guide tube having a filter portion is provided in the container in communication with the steam port.

  The rice cooker configured as described above includes a rice bowl attached to a heat sink, and a guide cylinder having a filter portion connected to a steam port formed on the lower face of the rice bowl is provided. It is possible to prevent clogging of the return hole if a part of the cooking object contained in the foam rising inside flows into the container.

The perspective view of the rice cooker of the state which opened the cover body 3 which concerns on Embodiment 1. FIG. Sectional drawing of the rice cooker of the state which closed the cover body 3 which concerns on Embodiment 1. FIG. The perspective view of the heat sink and rice bowl of the rice cooker which concerns on Embodiment 1. FIG. The perspective view of the heat sink and rice bowl of the rice cooker which concerns on Embodiment 1 seen from the direction opposite to FIG. FIG. 6 is a cross-sectional view of a toy container provided with a guide tube of another example of the first embodiment. FIG. 6 is a cross-sectional view of a toy container provided with a guide tube of another example of the first embodiment. FIG. 6 is a cross-sectional view of a toy container provided with a guide tube of another example of the first embodiment.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to FIGS. FIG. 1 shows a perspective view of a rice cooker in a state in which a lid 3 according to Embodiment 1 is opened. FIG. 2: shows sectional drawing of the rice cooker in the state which closed the cover body 3 which concerns on Embodiment 1. FIG. FIG. 3 is a perspective view of the heat sink and the rice bowl of the rice cooker according to the first embodiment. 4 shows a perspective view of the heat sink and rice bowl of the rice cooker according to Embodiment 1 as viewed from the opposite direction to FIG. FIG. 5 is a cross-sectional view of a toy container having a guide tube of another example of the first embodiment. FIG. 6 is a cross-sectional view of a toy container having a guide tube of another example of the first embodiment. FIG. 7 is a cross-sectional view of a toy container having a guide tube of another example of the first embodiment.

  The structure of the rice cooker which concerns on Embodiment 1 is demonstrated using FIG.1 and FIG.2. The rice cooker main body 1 forming the outline of the rice cooker has a quadrangular shape, a plastic outer frame 1a, a plastic bottom plate 1b, and a bottomed cylindrical inner made of a metal material such as aluminum or stainless steel. And a frame 1c.

  An inner pot 2 is accommodated in the inner frame 1 c of the rice cooker body 1. The inner pot 2 accommodates an object to be cooked such as water, rice, or milled rice, and has a bottomed cylindrical shape mainly made of aluminum having good thermal conductivity and having an opening on the upper surface. The inner hook 2 is also provided with an annular flange portion 2a extending from the periphery of the upper end to the outer peripheral side.

  A heating means 12 is disposed around the bottom surface of the inner frame 1 c of the rice cooker body 1. The heating means 12 is, for example, an electromagnetic induction coil or the like. When cooking starts and a high-frequency current is supplied, the inner pot 2 is heated by the magnetic field generated from the heating means 12, and the food to be cooked in the inner pot 2 is heated. Will be. Note that the heating method of the heating means 12 for heating the inner pot 2 may be an electromagnetic induction heating type as in the present embodiment, or may be a radiant heating type.

  A hinge portion 14 is provided on the rear side of the rice cooker body 1 (hereinafter, the left side and the right side in FIG. 2 are referred to as the front side and the rear side, respectively), and the lid 3 is interposed via the hinge portion 14. The rice cooker body 1 is supported so as to be openable and closable. The lid 3 has a quadrangular shape, and has a top surface on which operation buttons and the like are disposed, a side surface extending from the top surface, and a bottom surface facing the top surface opening of the inner hook 2. A concave portion 3a is provided on the bottom surface portion, an annular step portion 3b is formed on the inner wall surface of the concave portion 3a, and a packing 6 made of an elastic member such as silicon rubber is provided on the step portion 3b. .

  On the bottom surface of the recess 3a of the lid 3, an exhaust port 11 for discharging steam generated by rice cooking to the outside of the rice cooker is formed. Although the exhaust port 11 should just be in the rear part side of the recessed part 3a bottom face, it is not limited to this position, For example, you may form in the center of the recessed part 3a bottom face.

  On the front side of the upper surface of the lid 3, an operation unit 15 that is operated by the user of the rice cooker is provided. The user can start cooking by pressing the button on the operation unit 15 and can check the remaining time until the cooking ends by looking at the numbers displayed on the display screen of the operation unit 15. it can.

  A metal heat radiating plate 4 fixed by a heat radiating plate fixing frame 7 is detachably attached to the lid 3. The heat radiating plate 4 has a disc shape, and an annular packing 8 made of an elastic member such as silicon rubber is provided on the periphery thereof. When the lid 3 is closed, the annular packing 8 provided on the heat sink 4 comes into close contact with the flange portion 2a of the inner hook 2, and the heat sink 4 closes the upper surface opening of the inner hook 2. When the heat radiating plate 4 closes the upper surface opening of the inner pot 2, the heat in the inner pot 2 during rice cooking can be confined, and uneven heating of the cooking object can be prevented.

  The heat sink 4 is formed with an opening 4a for attaching the container 5 (for attachment), and the container 5 is attached to the opening 4a so as to penetrate the heat sink 4. .

  A detailed configuration of the container 5 will be described with reference to FIGS. The container 5 is composed of a separable upper container 5b and lower container 5c. The upper container 5 b has a rectangular shape and is attached to the upper surface of the heat sink 4. An opening is formed in the lower surface of the upper container 5b, and the size thereof is approximately the same as the size of the opening 4a of the heat radiating plate 4. On the outer edge of the opening of the upper container 5b, an upper container locking portion 16 is provided so as to protrude from the outer edge of the opening toward the opening 4a of the heat sink 4.

  Further, the lower surface of the upper container 5b is formed to be inclined so as to become lower toward a pool recess 13 described later. For this reason, the rice cake attached to the lower surface of the upper container 5 b flows into the accumulation recess 13, so that the rice cake separated from the steam can be reliably accumulated in the accumulation recess 13. In addition, if the rice bowl adheres to the lower surface of the upper container 5b, the container 5 can be prevented from becoming dirty.

  The upper container 5b is configured not to have an upper surface (ceiling). Therefore, when the lid 3 is closed as shown in FIG. 2, the packing 6 provided on the step 3b of the recess 3a is in close contact with the upper end of the upper container 5b, so that the bottom surface of the recess 3a is the ceiling of the upper container 5b. Will play a role. The upper container 5b and the exhaust port 11 formed on the bottom surface of the recess 3a form a communication part 18. By configuring the upper container 5b not to have the upper surface as described above, the cost of the rice cooker provided with the container 5 can be reduced, and the lid 3 can be made thinner than before. The miniaturization of the rice cooker can be realized.

  On the other hand, the lower container 5c has a cylindrical shape, and a lower container locking portion 17 is provided on the inner wall of the side surface. When the lower container locking portion 17 is engaged with the upper container locking portion 16, the lower container 5c is attached to the upper container 5b.

  When the lower container 5c is attached to the upper container 5b, the reservoir 5 has a reservoir recess 13 formed therein. In the reservoir recess 13, a rice ball separated from the steam is stored. Note that the lower surface of the accumulation recess 13 may be formed so as to be inclined toward a return hole 5d to be described later.

  On the lower surface of the lower container 5c, there is formed a steam port 5a through which steam generated from the inner pot 2 by rice cooking is passed, and this steam port 5a is provided with the opening 4a of the radiator plate 4 and the upper container 5b. It communicates with the inside.

  A guide tube 9 is provided in the container 5 to guide the steam generated in the inner pot 2 to communicate with the steam port 5a formed on the lower surface of the lower container 5c. As shown in FIG. 2, the guide tube 9 can be formed extending upward from the steam port 5a. The guide tube 9 includes a tube portion 9a having one end (steam port 5a) opened and the other end (ceiling) closed, and a filter portion 9b having a plurality of holes formed therein. The filter part 9b is provided in the ceiling (upper surface) of the cylinder part 9a, and the hole is penetrated to pass the steam into the container 5 if the steam is passed. In the present embodiment, the cylindrical portion 9a and the filter portion 9b are integrally configured, that is, a configuration in which a plurality of holes are formed in the ceiling of the cylindrical portion 9b and the filter portion 9b is provided. However, the present invention is not limited to this. Alternatively, the tube portion 9a and the filter portion 9b may be formed of separate members. Details of the configuration of the separate members will be described later.

  The guide tube 9 is not only formed to extend upward from the steam port 5a, but may be configured to be attached to the upper portion of the steam port 5a, for example. Further, the tube portion 9a of the guide tube 9 is not limited to a tubular shape. That is, anything that allows the steam generated from the inner pot 2 to pass through the inside of the container 5 may be used. For example, a hollow quadrangular prism may be used.

  The diameter of the cylinder part 9a should just be about 9 mm. Moreover, it is preferable that the diameter of the hole in the filter part 9b is a magnitude | size which is a grade which does not let soybean skin etc. pass, for example, should just be about 2-3 mm. Further, the size of the holes in the filter portion 9b is not necessarily uniform, and there may be holes having various inner diameters.

  On the lower surface of the lower container 5c, apart from the steam port 5a, a screw return hole 5d for returning the screw stored in the container 5 to the inner pot 2 is formed. In other words, a return hole 5 d is formed on the lower surface of the reservoir recess 13 of the container 5. If the diameter of the return hole 5d is about 2.5 mm, for example, the return can be efficiently returned to the inner hook 2.

  The on-back return hole 5d is provided with an open / close valve 10 movable up and down, and the on-off valve 10 opens and closes the on-back return hole 5d. The on-off valve 10 includes a head portion 10a, a column portion 10b, and a substrate 10c. The outer diameter of the column portion 10b is smaller than the diameter of the return hole 5d, and the length of the column portion 10b is longer than the thickness of the bottom portion of the lower container 5c. The outer diameters of the head portion 10a and the substrate 10c are each formed to be larger than the diameter of the return hole 5d.

  When the internal pressure in the inner pot 2 is low, for example, before starting rice cooking, the head portion 10a of the on-off valve 10 abuts against the peripheral edge of the upper surface of the return hole 5d to prevent falling off, and the return hole 5d is opened. Keep in state. On the other hand, when the internal pressure in the inner pot 2 is high, that is, during rice cooking, the on-off valve 10 is raised by the steam generated from the inner pot 2, and the substrate 10c is returned to the lower peripheral edge of the return hole 5d. The hole 5d is closed.

  The on-off valve 10 is made of a material such as silicon rubber which has heat resistance and hardly changes over time, and is inserted into the return hole 5d from the head 10a side.

  In the present embodiment, the steam port 5a is formed on the front side and the return hole 5d is formed on the rear side. However, the present invention is not limited to this arrangement. For example, the steam port 5a may be formed at the rear side, and the return hole 5d may be formed at the front side, or the steam port 5a may be formed at the center of the lower surface of the lower container 5c. Further, the number of the steam ports 5a and the return holes 5d are not limited to one, and a plurality of steam ports may be formed.

  The operation from starting rice cooking to returning the rice balls stored in the rice container 5 to the inner pot 1 will be described with reference to FIG. In the inner pot 1, miscellaneous cereal rice containing water, soybean hulls, and the like is stored as an item to be cooked. When the user of the rice cooker presses the button of the operation unit 15 to start cooking rice, the heating means 12 is activated and the inner pot 2 is heated. When a predetermined time elapses after the inner pot 2 is heated, the water in the inner pot 2 boils, and steam containing rice balls is generated.

  When a predetermined time elapses after the inner hook 2 is heated, the internal pressure in the inner hook 2 has increased, so the on-off valve 10 is pushed up, and the column portion 10b of the on-off valve 10 comes into contact with the return hole 5d. The return hole 5d is closed. For this reason, the steam containing the rice cake does not flow into the container 5 through the return hole 5d, but is introduced into the container 5 through the guide tube 9 from the steam port 5a.

  The steam that flows into the container 5 through the guide tube 9 collides with the side wall and ceiling (the lower surface of the recess 3a of the lid 3) of the container 5 and diffuses through the container 5 toward the exhaust port 11. In the meantime, a heavy rice ball is separated from the steam.

  The rice bowl separated from the steam is stored in the reservoir recess 13 in the container 5. As for the rice cake attached to the lower surface of the upper container 5b, the lower surface of the upper container 5b is formed so as to be inclined toward the concave portion 13 as described above, and thus flows into the concave portion 13; It is stored in the pool recess 13.

  On the other hand, the steam from which the rice cracker has been separated is exhausted to the outside of the rice cooker from the exhaust port 11 communicating with the rice basket container 5.

  Aside from the steam described above, when a predetermined time has elapsed since the start of cooking, bubbles are generated from the inner pot 1 and rise. This foam contains soybean skin and the like contained in the food. When the bubble rises, it passes through the guide tube 9 and flows into the container 5. However, since the soybean skin contained in the foam cannot pass through the filter portion 9b provided in the guide tube 9, it does not flow into the container 5.

  When rice cooking is completed, the electromagnetic induction coil 13 is controlled and heating to the inner pot 1 is stopped. When the heating is stopped and the internal pressure in the inner hook 1 is lowered, as the on-off valve 11 is lowered, the towel stored in the storage recess 13 is returned to the inner pot 1 from the return hole 5d. At this time, the filter portion 9b described above can prevent the soy skin contained in the foam from flowing into the container 5 so that the soy skin is clogged in the return hole 5d. It is possible to prevent a situation where it is impossible to return the to the inner hook 1.

  As mentioned above, the rice cooker which concerns on Embodiment 1 of this invention is provided with the rice bowl container 5 attached to the heat sink 4, and is connected to the steam port 5a formed in the lower surface of the rice bowl container 5, and a filter part. Since the guide tube 9 provided with 9b is provided, the soybean hulls and the like contained in the foam rising during cooking cannot pass through the filter portion 9b and flow into the container 5 to return the hole 5d. Can prevent clogging.

  The accumulated rice balls are returned to the cooked food in the inner pot 2 from the cooked return hole 5d, so that the delicious ingredients contained in the rice cake are given to the cooked foods, and are glossy. It becomes possible to cook some delicious food.

  Moreover, since the container 5 is attached to the heat sink 4 and the heat sink 4 is detachably attached to the lid 3, the heat sink 4 and the container 5 are removed from the lid 3 and washed. Can be kept clean.

  In addition, although the structure in which the container 5 is composed of the upper container 5b and the lower container 5c has been described so far, a structure in which these are integrated may be used. In such a configuration, an opening communicating with the exhaust port 11 or the exhaust port 11 is formed on the upper surface of the container 5.

  Note that the guide tube 9 provided in the container 5 is not limited to the above-described configuration, and may have another configuration. Hereinafter, modified examples of the guide tube 9 will be described with reference to FIGS.

  FIG. 5 shows a guide tube 9 in which the tube portion 9a and the filter portion 9b are configured as separate members. The tube portion 9a of the guide tube 9 has an opening in the ceiling, and a cap of another member constituting the filter portion 9b is detachably attached to the opening of the tube portion 9a. In this case, a convex portion is provided on the outer peripheral surface of the cylindrical portion 9a, a concave portion is provided on the inner peripheral surface of the filter portion 9b, and the convex portion is fitted into the concave portion, whereby the filter portion 9b is attached to the cylindrical portion 9a. . Thus, since the filter part 9b and the cylinder part 9a are the structure of a separate member, since the filter part 9b can be removed from the cylinder part 9a and washed, it becomes possible to keep the filter part 9b clean. .

  In addition, as shown in FIG. 6, the ceiling of the cylindrical portion 9a is formed by inclining from one end to the other end with respect to the axial center, and a plurality of holes are formed in the inclined ceiling to form the filter portion 9b. It is good also as providing. By doing so, the guide tube 9 includes a tube portion 9a formed with an inclined ceiling and a filter portion 9b provided on the ceiling of the tube portion 9a. Can be prevented, so that it is possible to more reliably prevent soybean hulls and the like contained in the foam from passing through the filter portion 9b. In addition, soybean hulls and the like attached to the inclined ceiling can easily fall, and the soybean hulls and the like can be prevented from blocking the holes of the filter portion 9b.

  When the hole of the filter portion 9b is blocked by soybean hulls or the like, the amount of steam that passes through the container 5 decreases, so the function as the container 5 that collects the container and returns it to the inner pot 2 And the pressure in the rice cooker body 1 abnormally increases, which is dangerous. From this point of view, the modified example shown in FIG. 6 for preventing soybean skin and the like from blocking the hole of the filter portion 9b is also effective.

  Further, as shown in FIG. 7, the guide tube 9 may be inclined with respect to the axis from the middle of the side surface of the tube portion 9 a. The direction to be inclined is opposite to the exhaust port 11 of the lid 3. That is, it is only necessary that the upper surface of the tube portion 9 a of the guide tube 9 is inclined in a direction not facing the exhaust port 11. In the example of FIG. 7, since the exhaust port 11 is formed on the rear side, the cylinder portion 9 a is inclined to the front side so as to face the exhaust port 11. This prevents the soybean hulls and the like contained in the raised bubbles from vigorously reaching the filter unit 9b, thereby making it difficult for the soybean hulls or the like to pass through the filter unit 9b. Further, it is possible to prevent the steam that has passed through the guide tube 9 from being vigorously sent to the exhaust port 11 and blown out from the exhaust port 11. In the example of FIG. 7, the tube portion 9 a is inclined from the middle of the side surface. However, the entire tube portion 9 a is arranged at the front portion so as to prevent steam from being sent from the guide tube 9 to the exhaust port 11. You may incline to the side.

  In the above example, the filter portion 9b is provided on the ceiling of the tube portion 9a of the guide tube 9. However, a hole may be formed on the side surface in addition to the ceiling of the tube portion 9a. A hole may be formed only on the side surface.

  Although there is no restriction | limiting in particular about the length of the guide cylinder 9, It is preferable to give the guide cylinder 9 a fixed length so that the distance of the filter part 10 and to-be-cooked object may become a certain distance. By doing so, since the amount of soybean hulls and the like contained in the foam reaching the filter unit 10 is reduced, it is possible to prevent the soybean hulls and the like from flowing into the container 5 more reliably. Become.

1 inner pot,
DESCRIPTION OF SYMBOLS 1a Flange part 2 Rice cooker main body 3 Cover body 3a Concave part 3b Step part 4 Heat sink 4a Opening part 5 Stick container 5a Steam port 5b Upper container 5c Lower container 5d Stick return hole 6 Packing 7 Heat sink fixed frame 8 Annular packing 9 Guide tube 9a Tube portion 9b Filter portion 10 On-off valve 10a Head portion 10b Column portion 10c Substrate 11 Exhaust port 12 Heating means 13 Reservoir recess 14 Hinge portion 15 Operation portion 16 Upper container locking portion 17 Lower container locking portion 18 Communication Part

Claims (5)

The rice cooker body in which the inner pot is housed,
A lid that is supported by the rice cooker body so that it can be opened and closed.
A flat heat sink that is detachably attached to the lid and covers the upper surface opening of the inner hook, and has an opening for attachment,
A tote container that is attached to the mounting opening of the heat radiating plate and has a steam port and a toe return hole formed in the bottom portion that communicate with the inner pot;
A rice cooker comprising a guide tube having a filter portion in communication with the steam port in the container.   The rice cooker according to claim 1, wherein the filter portion of the guide tube is a plurality of holes formed on an upper surface or a side surface.   2. The rice cooker according to claim 1, wherein the guide tube includes a tube portion having an upper surface opening communicating with the steam port, and a cap that is detachably attached to the upper surface opening of the tube portion and constitutes a filter portion. vessel.   The rice cooker according to any one of claims 1 to 3, wherein an upper surface of the guide tube is inclined with respect to an axis of the guide tube.   The rice cooker according to any one of claims 1 to 3, wherein an upper surface of the guide tube is inclined in a direction not facing an exhaust port formed in the lid.

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