JP2001309851A - Rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice cooker which is easy to clean and surely prevents boiling over during cooking. SOLUTION: This rice cooker is comprised of a body 3 holding a removable cooking pot 2, a lid 8 which is hinged so it opens and closes, and a removable inner lid 16 to seal the cooking pot 2, having a steam outlet 18 from which the steam inside the cooking pot 2 is discharged to the outside of the lid 8. At the top of the steam outlet 18, a discharging duct member 19 is installed for the purpose of preventing the steam created inside the cooking pot 2 from blowing out of the lid 8, at the top of which a discharging part 28 is formed, being exposed to outside through an opening 10 formed on the upper surface of the lid 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker having a structure for preventing Oneva, a viscous vapor containing rice components, from spilling out of a lid.

[0002]

2. Description of the Related Art Conventionally, a rice cooker provided with a structure for preventing Oneva, which is a viscous vapor containing rice components, from spilling out of a lid (hereinafter abbreviated as a spillover prevention structure). Various are provided.

[0003] For example, Japanese Patent Application Laid-Open No. 8-38350
This is referred to as a first conventional example. In (2), a steam cap is provided at a position communicating with the steam discharge passage formed in the lid and forming an ONEBA storage space with the bottom surface of the lid. The steam cap is separated from the steam discharged between the steam cap and a bottom surface of the lid body to guide steam from the inside of the rice cooker main body to the steam discharge passage and located below the steam hole. And a oneva return hole for returning the oneva stored in the oneva reservoir.

In Japanese Patent Application Laid-Open No. Hei 10-201620 (hereinafter referred to as a second conventional example), a lid for opening and closing an upper opening of a main body is provided with a heat radiating plate having an exhaust port on a lower surface and the exhaust gas. It has a configuration having a steam tube for communicating the mouth with the outside of the rice cooker main body. A moisturizing cap is detachably provided from above in the steam cylinder of the lid. This moisturizing cap has a tubular shape, with a steam hole on its upper wall,
A ventilation hole is provided in the upper part of the side wall surface, and a circulation hole having a circulation valve is provided in the lower wall surface.

Further, in Japanese Patent Application Laid-Open No. Hei 10-216011 (hereinafter referred to as a third conventional example), a steam passage body detachably attached to the lid from above is provided with a steam passage forming an Oneva separation space therebetween. It is configured to include a passage main body and a steam passage cover. A tubular steam inlet is formed in the steam passage main body, and a steam outlet is formed in a portion of the steam passage cover corresponding to the steam inlet.

[0006]

However, in the rice cookers of the first and second conventional examples, since the lid constitutes a part of the steam discharge passage, that part is contaminated by the steam containing the oneva. In addition, since the cover has a large area (volume) forming the steam discharge passage, it is very complicated to clean a dirty portion of the cover, and there is a problem that workability is poor.

Further, in the above-described conventional rice cookers, when the steam generated inside the rice cooker flows into each steam discharge passage,
With the force of the steam, the viscous Oneva containing the components of rice may be discharged to the outside together.

Accordingly, an object of the present invention is to provide a rice cooker which is easy to clean and can surely prevent spills during cooking.

[0009]

Means for Solving the Problems In order to solve the above problems, a rice cooker according to the present invention comprises a main body for detachably storing a rice cooker, a lid attached to the main body so as to be openable and closable, and An inner lid that is detachably attached and has a steam outlet for closing the rice cooker and discharging steam in the rice cooker to the outside of the lid, and is attached to an upper part of the steam outlet in the inner lid. A structure for preventing steam generated in the rice cooker from spilling out of the lid, and exposing an exhaust portion formed at an upper end to an outside through an opening formed in an upper surface of the lid. And an exhaust duct member.

[0010] Alternatively, a main body for detachably storing the rice cooker, a lid openably and closably attached to the main body, a detachably mounted lid for sealing the rice cooker and the steam in the rice cooker. An inner lid provided with a steam outlet for discharging water to the outside of the lid, and attached to an upper portion of the steam outlet in the inner lid, and steam generated in the rice cooker spills out of the lid. An exhaust duct member in which an exhaust portion formed at the upper end is positioned at a lower peripheral edge of an exhaust port formed on the upper surface of the lid, and an upper exhaust portion and a lid of the upper end of the exhaust duct member. And a sealing member for sealing between the exhaust port and the periphery.

According to the rice cooker, the exhaust duct member is formed such that the exhaust portion at the upper end is directly exposed to the outside through the lid or extends to the exhaust port of the lid. The lid itself is not contaminated by steam.

[0012] In the rice cooker, the structure for preventing the spill-over is characterized in that the exterior body of the exhaust duct member is partitioned into a space for inflow of steam and a separation space by a partition wall, and the steam flowing from the inflow space to the separation space is separated into the space for separation. It is preferable to adopt a configuration that forms a substantially spiral swirling flow. If you do this,
Among the steam generated in the rice cooker, viscous Oneva can be attached to the wall surface of the separation space and separated. As a result, only the water vapor from which the oneva has been separated and removed can be discharged to the outside of the lid, so that it is possible to reliably prevent the spillover.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a rice cooker 1 according to a first embodiment of the present invention. The rice cooker 1 includes a rice cooker 2 and the rice cooker 2.
And a cover 8 rotatably attached to the main body 3.

The rice cooker 2 is a ferromagnetic material which is electromagnetically heated by an eddy current generated when a high-frequency current is applied to an induction heating coil 6 to be described later, on the outer surface of a pot base material made of aluminum or the like having a high thermal conductivity. Is subjected to coating or bonding.

The main body 3 has a protective frame 5 made of a non-conductive material for accommodating the rice cooker 2 inside a body 4 having a bottomed cylindrical shape. A known configuration in which an induction heating coil 6 serving as a heating means, a rice cooker temperature sensor 7, and a control board (not shown) mounted with a microcomputer are provided between the body 4 and the protection frame 5. It is.

The lid 8 is attached to the main body 3 so as to be openable and closable, and closes an opening of the main body 3. And an inner lid 16 for sealing the opening of the rice cooker 2.

The upper plate 9 is provided with an opening 10 that penetrates an exhaust portion 28 of an exhaust duct member 19 to be described later to be exposed to the outside (atmosphere). On the inner surface side of the upper plate 9, a cylindrical rib 11 is provided from the periphery of the opening 10.

The lower plate 12 is provided with a heat radiating plate 13 on the lower surface in the same manner as in the prior art.
2, a lid heater 14 is provided. This lower plate 1
2 has a lower end (a rice cooker 2) for accommodating the exhaust duct member 19.
Side) is provided.

The inner lid 16 is provided with a gasket 17 which presses against the upper edge of the rice cooker 2 and seals the inside of the rice cooker 2 all around. The inner lid 16 is provided with a steam outlet 18 for discharging steam generated inside the rice cooker 2 at a position corresponding to the accommodating portion 15 of the lower plate 12,
An exhaust duct member 19 housed in the housing portion 15 is integrally attached to an upper portion of the steam outlet 18. Since the inner lid 16 and the lid 8 are mounted by the same mounting structure as in the related art, detailed description will be omitted.

As shown in FIGS. 1 and 2A and 2B, the exhaust duct member 19 has a substantially elliptical exterior body 20 having an open bottom surface. A substantially semicircular partition wall 21 is provided inside the exterior body 20 as a structure for preventing spillover. One end of the partition wall 21 is formed integrally with the exterior body 20 and the other end is formed so as to be close to a position facing the continuous portion. The exhaust duct member 19 has a small area located on the right side in FIG. 2B and an inflow space 22 located on the steam discharge port 18 and a large area located on the left side in FIG. Is separated into a separation space 23 in which oneva containing rice components contained in the steam is adhered to the wall surface and separated. The inflow space 22 and the separation space 23 communicate with each other by the discontinuous portion 24 of the partition wall 21 having a small opening area.

An opening 25 for a cleaning operation is provided on the upper surface of the exterior body 20, and the opening 25 is detachably closed by a lid 26. The opening 25 and the lid 26 are attached by a known attachment structure. Further, a cylindrical portion 27 communicating with the inside of the exterior body 20 and corresponding to the opening 10 of the lid 8 is provided on the upper surface of the exterior body 20. This cylindrical portion 27
The upper end protrudes slightly outside from the opening 10 to form an exhaust unit 28 for exhausting steam. Further, a flange portion 29 is provided at a lower end edge of the exterior body 20 for attaching to the inner lid 16 by a known method such as riveting. As shown in FIG. 1, a groove is provided on the bottom surface of the flange portion 29, and a seal member 30 for hermetically sealing the space between the inner lid 16 and the groove is provided in the groove.

In the rice cooker 1 having the above configuration, the user operates the inner lid 1
By attaching 6 to lid 8, exhaust duct member 19 integrally attached is accommodated in accommodation portion 15, and exhaust portion 28 at the upper end is exposed to the outside through opening 10 in upper plate 9. Thereby, the rice cooker 1 has a rice cooker 2
From inside, a steam discharge passage communicating with the outside only through the inside of the exhaust duct member 19 is formed.

When the user selects a desired rice cooking mode and executes the rice cooking operation, the microcomputer performs rice cooking control in the same manner as in the conventional case. Then, if the inside of the rice cooker 2 boils during the rice cooking control, steam containing rice components is generated.

The steam generated in the rice cooking pot 2 firstly
The exhaust duct member 19 passes through the steam exhaust port 18 of the inner lid 16.
Flows into the inflow space 22, and flows toward the non-communication portion in the inflow space 22. At this time, since the non-communication portion is formed so as to have a small opening area,
The steam flow speed becomes faster as approaching the non-communication part.

As a result, as shown in FIG. 2 (B), the steam flowing into the separation space 23 forms a substantially spiral swirling flow along the wall of the exterior body 20 and the partition wall 21, and the swirling flow of the cylinder The air reaches the portion 27 and the exhaust portion 28 at the upper end of the cylindrical portion 27, and is exhausted directly from the lid 8 to the outside.

At this time, the oneva contained in the steam adheres to the wall of the exterior body 20 and the partition wall 21 because of its high specific gravity. Therefore, it is possible to reliably prevent the Oneva from spilling out of the rice cooker 1.

On the other hand, when cleaning the rice cooker 1, the user removes the inner lid 16 from the lid 8. As a result, the exhaust duct member 19 fixed to the inner lid 16 is integrally removed, and the side of the rice cooker 2 of the detached inner lid 16 and the lid 26 of the exhaust duct member 19 are removed with a sink.
The wall of the separation space 23 to which Oneva is attached is washed.

In the present embodiment, the exhaust duct member 19 is provided with an exhaust portion 28 exposed from the lid 8, and the rice cooker 2
Since the steam generated in the inside is exhausted directly to the outside of the lid 8 through only the inside of the exhaust duct member 19, the accommodating portion 1 of the lid 8 accommodating the exhaust duct member 19 is provided.
No stain from Oneva was attached to No. 5. Therefore, it is not necessary to clean the lid 8 that cannot be separated from the main body 3, and only the inner lid 16 needs to be removed for cleaning, so that the cleaning workability can be improved.

FIG. 3 shows a rice cooker 1 according to a second embodiment of the present invention.
Is shown. In the rice cooker 1, the exhaust portion of the exhaust duct member 19 is not exposed to the outside from the lid 8, and a small portion of the lid 8 constitutes a steam discharge passage.

Specifically, the upper plate 9 of the lid 8 has an exhaust port 40 slightly smaller than the opening 10 shown in the first embodiment. Around the exhaust port 40, a rib 11 protruding downward is provided as in the embodiment. A second seal member 41 is provided at the lower end of the rib 11 for hermetically sealing the space between the rib 11 and the exhaust duct member 19 described later.

The exhaust duct member 19 is different from the first embodiment only in that the cylindrical portion 27 shown in the first embodiment is not formed and the exhaust portion 42 is formed in the exterior body 20.

In the rice cooker 1 of the second embodiment, when the user attaches the inner lid 16 to the lid 8, the exhaust duct member 1
9 is accommodated in the accommodating portion 15, and the periphery of the exhaust portion 42 is pressed against the sealing member 41 to be hermetically sealed. Thereby, in the rice cooker 1, a steam discharge passage communicating from the inside of the rice cooker 2 to the inside of the exhaust duct member 19 and the outside via the seal member 41 is formed.

On the other hand, when the user cleans the rice cooker 1, the exhaust duct member 19 fixed to the inner lid 16 is removed by removing the inner lid 16 from the lid 8 as in the first embodiment. The inner lid 16 and the exhaust duct member 19 which have been removed integrally and which have been removed can be washed with the sink.

In the second embodiment, the lid 8 constitutes a part of the steam discharge passage, and this part is a small area (volume) surrounded by the seal member 41 and the rib 11.
Is only the part. In addition, since the exhaust duct member 19 of the present invention is provided with a structure for preventing spillage by generating a swirling flow, most oneva can be attached to the inside of the exhaust duct member 19. For this reason, there is very little dirt on a part of the area constituting the steam discharge passage, and there is almost no need to clean the part. Further, in the case of cleaning, only a small portion needs to be cleaned from the accommodating portion 15 which is widely opened by removing the inner lid 16, so that workability is good.

FIG. 4 shows a rice cooker 1 according to a third embodiment. The rice cooker 1 has a structure in which the area surrounded by the ribs 11 shown in the second embodiment is widened, and the exhaust duct member 19 has a structure in which steam condensed in the space surrounded by the ribs 11 is returned into the exhaust duct member 19. Is applied.

More specifically, the rib 11 is formed on the upper plate 9 of the lid 8 so as to have a slightly smaller outer shape than that of the exhaust duct member 19, and a seal member 41 is arranged at the lower end of the rib 11. Has been established.

A large-diameter opening 50 is provided in the exhaust duct member 19 so as to be located above the separation space 23.
The cover 51 is detachably provided. This lid 51 is provided with a substantially conical concave portion 52 that is concentrically recessed in the center portion,
An exhaust part 53 is provided at a lower end of the concave part 52. The exhaust portion 53 also serves as a through hole for returning water condensed in the space surrounded by the rib 11 into the exhaust duct member 19. In the figure, reference numeral 54 denotes a knob for opening and closing the lid 51.

In the rice cooker 1 of the third embodiment, similarly to the second embodiment, when the user attaches the inner lid 16 to the lid 8, the exhaust duct member 19 is pressed against the seal member 41, and the rice cooker 1 is airtight. Sealed.

On the other hand, when the user cleans the rice cooker 1, by removing the inner lid 16 from the lid 8, the exhaust duct member 19 fixed to the inner lid 16 is integrally removed, and The detached inner lid 16 and the exhaust duct member 19 can be cleaned. The lid 8 constitutes a part of the steam discharge passage, and the part is hardly stained by the oneva by the spill-over prevention structure. Only the cleaning needs to be performed, so workability is good.

In the third embodiment, the rib 11
The moisture condensed in the space surrounded by the space can be returned to the exhaust duct member 19, so that the contamination of the surrounded space can be further suppressed.

The rice cooker 1 of the present invention is not limited to the configuration of the above embodiment. For example, in the second and third embodiments, the upper plate 9 of the lid 8 is provided with the rib 11 surrounding the exhaust port 40 and the rib 11 is provided with the seal member 41, but the rib is provided on the exhaust duct member 19. A projection may be provided, and a sealing member for sealing between the rib and the upper plate 9 of the lid 8 may be provided on the rib.

The exhaust duct member 19 includes the inner lid 1.
6 may be brazed over the entire periphery of the lower end. Alternatively, the lower structure of the exhaust duct member 19 may be integrally formed with the inner lid 16 and the upper portion may be closed by a known lid structure. In this case, the seal member 30 shown in each of the above embodiments can be omitted.

Further, in each of the above-described embodiments, the spillover prevention structure formed in the exhaust duct member 19 is provided in the separation space 2.
Although a substantially spiral swirling flow is adopted in 3, the spiral swirling flow is not necessarily required. That is, the inflow space 22 and the separation space 23 are partitioned by the partition wall 21 and the separation space 2
If the exhaust portion is provided on the side of 3, the steam flowing into the exhaust duct member 19 can be prevented from directly flowing to the exhaust portion, and the contact area with the wall surface increases, so that substantially the same operation and effect can be obtained. Obtainable.

[0044]

As is apparent from the above description, in the rice cooker of the present invention, the exhaust duct member is provided with an exhaust portion that penetrates the lid and is directly exposed to the outside, or the exhaust port of the lid. It is formed so as to extend to the end and is sealed by the seal member, so that the lid itself can reliably prevent contamination by steam. In addition, since the exhaust duct member has a structure in which steam generated in the rice cooker is formed into a substantially spiral swirling flow in the separation space as a structure for preventing spillover, the steam generated in the rice cooker has viscosity. Oneva is attached to the wall surface of the exhaust duct member and can be reliably separated.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a rice cooker according to a first embodiment of the present invention.

FIG. 2 shows an exhaust duct member of the first embodiment,
(A) is a perspective view with a part cut away, and (B) is a sectional view of a main part.

FIG. 3 is a sectional view showing a rice cooker according to a second embodiment.

FIG. 4 is a sectional view showing a rice cooker according to a third embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Rice cooker, 2 ... rice cooker, 3 ... body, 8 ... lid, 9 ... upper plate, 10 ... opening, 12 ... lower plate, 15 ... accommodation part, 16 ... inner lid, 17 ... packing, 18 ... steam Outlet, 19 ... Exhaust duct member, 20 ... Outer body, 21 ... Partition wall, 22 ... Inflow space, 23 ... Separation space, 27 ... Cylinder, 28 ... Exhaust, 2
9 ... Flange part, 30 ... Seal member.

Claims (3)

[Claims] 1. A main body for detachably storing a rice cooker, a lid removably attached to the main body, a detachably mounted lid for the lid, sealing the rice cooker and steam in the rice cooker. An inner lid provided with a steam outlet for discharging water to the outside of the lid, and attached to an upper portion of the steam outlet in the inner lid, and steam generated in the rice cooker spills out of the lid. A rice cooker characterized by comprising a structure for preventing the above phenomenon, and an exhaust duct member that allows an exhaust portion formed at the upper end to pass through an opening formed on the upper surface of the lid and to be exposed to the outside. . 2. A main body for detachably storing a rice cooker, a lid removably attached to the main body, and a detachably mounted lid for sealing the rice cooker and steam in the rice cooker. An inner lid provided with a steam outlet for discharging water to the outside of the lid, and attached to an upper portion of the steam outlet in the inner lid, and steam generated in the rice cooker spills out of the lid. An exhaust duct member in which an exhaust portion formed at the upper end is located at a lower peripheral edge of an exhaust port formed on the upper surface of the lid, and an upper exhaust portion and the lid of the exhaust duct member are provided. A rice cooker comprising: a seal member that seals a gap between a periphery of an exhaust port. 3. The structure for preventing spill-over is characterized in that an exterior body of an exhaust duct member is partitioned into a space for inflow of steam and a space for separation by a partition wall, and the steam flowing from the space for inflow to the space for separation is substantially spiraled in the space for separation. The rice cooker according to claim 1 or 2, wherein the rice cooker has a swirling flow.