JP6356089B2 - Steam discharge structure of rice cooker - Google Patents

Description

  The present invention relates to a steam discharge structure of a rice cooker.

  Conventionally, as a rice cooker, a heat sink provided with a separation case is known (see, for example, Patent Documents 1 and 2).

  However, in the conventional rice cooker, a separation case is provided in addition to the steam outlet, and there are many parts to be cleaned, and the cleaning work is troublesome.

JP 2002-238743 A JP 2011-177386 A

  An object of the present invention is to provide a steam discharge structure for a rice cooker that has a small number of parts, is easy to clean, and can effectively prevent the outflow of rice balls and the like.

As a means for solving the above problems, the present invention provides:
It is a steam discharge structure of a rice cooker that discharges steam through a steam discharge part formed on the lid,
The steam discharge part is
A first tube portion extending from a steam port opening on the outer surface of the lid,
A second cylindrical portion extending from the first cylindrical portion while gradually increasing the opening area;
A partition wall that partitions the first tube portion and the second tube portion, and is formed with a plurality of through holes;
Comprising a passage member consisting of
The partition wall in which the plurality of through holes are formed has a function of suppressing movement of the screw,
The first tube portion provides a steam discharge structure for a rice cooker having a function of preventing the rice balls from being discharged to the outside .

With this configuration, it is possible to reduce the number of cleaning parts and to perform cleaning from the widened inner opening side, so that the cleaning work can be easily performed. Moreover, it can suppress that the vapor | steam which generate | occur | produces during rice cooking or heat retention is discharged | emitted more than necessary. In addition, it is possible to prevent invasion of dust and insects into the inside. Furthermore, it is possible to suppress the outflow of rice balls generated inside. Furthermore, since the partition wall is formed on the inner side from the steam opening, the condensed water generated when passing through the plurality of through holes is hardly scattered to the outside.

It is preferable that the second cylindrical portion has an inclined surface extending from the lower end of the horizontal direction toward the upper end of the other end along the inflow direction of the steam .

  With this configuration, the contact area of the inclined surface with respect to the steam passing through the steam discharge section can be increased. Therefore, it becomes easy to condense the vapor on the inclined surface. Moreover, since the steam discharge part is provided with an inclined surface and has a structure in which the opening area is gradually reduced, cleaning becomes easy along the inclined surface.

The lid body includes a removable inner lid,
The second cylinder part preferably communicates with a steam discharge passage in which a pressure regulating valve provided on the inner lid is disposed .

The through holes are preferably arranged along a direction perpendicular to the inflow direction of the steam .

  With this configuration, it is possible to effectively prevent the outflow of the rice ball and the scattering of water droplets while making the flow of steam smooth.

  According to the present invention, since the steam discharge portion has an inner opening having a larger opening area than the steam opening, the cleaning property can be improved. Moreover, it can suppress that the vapor | steam generate | occur | produced during rice cooking or heat retention is discharged | emitted more than necessary.

It is a perspective view of the rice cooker which concerns on this embodiment. FIG. 2 is an exploded perspective view of FIG. 1. FIG. 3 is an exploded perspective view illustrating a state in which the upper lid and the lower lid in FIG. 2 are viewed from the lower side and a state in which the inner lid is viewed from the upper side. It is a perspective view which shows the state which decomposed | disassembled the channel | path member and packing from the lower cover of FIG. It is an enlarged view of the channel | path member of FIG. It is a perspective view which shows the state which looked at the channel | path member of FIG. 5 from the downward side.

  Embodiments according to the present invention will be described below with reference to the accompanying drawings. In addition, the following description is only illustrations essentially and does not intend restrict | limiting this invention, its application thing, or its use.

  FIG. 1 is a perspective view of a rice cooker according to the present embodiment. This rice cooker includes a rice cooker body 1 and a lid 2 that is rotatably attached to the rice cooker body 1.

  As shown in FIG. 2, an inner pot 3 is accommodated in the rice cooker body 1. The lid 2 includes an upper lid 4 and a lower lid 5. A lid panel 6 is attached to the upper surface of the upper lid 4. The lid panel 6 is formed with a steam opening 7 extending in the width direction at the center on the rear side. A communication hole 8 is formed in the upper lid 4 at a position corresponding to the steam opening 7. Locking claws 9 (see FIG. 3) extend downward from both sides of the communication hole 8 respectively.

  As shown in FIGS. 3 and 4, a rectangular cylindrical steam discharge passage 10 is formed in the central portion on the rear side of the lower lid 5. The bosses 11 protrude from the four corners of the steam discharge passage 10 so that a later-described passage member 23 can be fixed with screws. A first pressure regulating valve 21 to be described later is disposed mainly on the hemispherical portion 10b side of the steam discharge passage 10. A lid reinforcing plate 14 provided with a first solenoid 12 and a second solenoid 13 is disposed on the upper surface of the lower lid 5. The rod 12a of the first solenoid 12 penetrates the hemispherical portion 10b and can press the pressure adjusting ball of the first pressure adjusting valve 21.

  A heater cover 18 having a first opening 16 and a second opening 17 is attached to the center of the lower surface of the lower lid 5 via an annular circular packing 15. The first opening 16 has a substantially trapezoidal shape in plan view, and the steam discharge passage 10 is opened there, and an inner opening of a passage member 23 described later is exposed. A packing 19 is disposed between the opening of the steam discharge passage 10 of the lower lid 5 and the first opening 16. The lower lid 5 and the heater cover 18 are hermetically sealed by the packings 15 and 19. The second opening portion 17 has a circular shape in plan view, and the inner lid mounting detection portion 17a is exposed there.

  A removable inner lid 20 is attached to the lower surface of the lower lid 5. The inner lid 20 is provided with a first pressure regulating valve 21 and a second pressure regulating valve 22. The 1st pressure regulation valve 21 is for preventing that the pressure in the inner pot 3 raises more than 1st pressure. The 2nd pressure regulation valve 22 is for maintaining the pressure in the inner pot 3 at the time of rice cooking to the 2nd pressure which exceeds 1 atm but does not exceed the 1st pressure.

  As shown in FIG. 4, a passage member 23 is attached to the upper surface side of the lower lid 5 so as to be continuous with the steam discharge passage 10.

  As shown in FIG. 5, the passage member 23 includes an upper first cylinder portion 24 and a lower second cylinder portion 25.

  A guide groove 26 is formed on the outer surface of the first cylindrical portion 24 by forming flange portions 24a and 24b on the upper end and on a lower side by a predetermined dimension therefrom. An annular packing 27 (see FIG. 4) is attached to the guide groove 26. Further, the latch receiving portions 28 protrude from the lower surfaces of both ends of the lower flange portion to both ends. Locking claws 9 formed on the lid panel 6 are locked to the locking receiving portions 28, respectively. Accordingly, the upper end of the passage member 23 can be accurately positioned in the steam opening 7 of the lid panel 6. As a result, the boundary portion between the two is hermetically sealed, and the steam port 6a is opened on the upper surface of the lid 2 (lid panel 6).

  As shown in FIG. 6, the second cylinder part 25 is formed to be wider in the front-rear direction with respect to the first cylinder part 24. The rear inner surface of the second cylinder portion 25 extends straight downward. On the other hand, the inner surface on the front side of the second cylindrical portion 25 is composed of an inclined surface 25a that gradually spreads forward. As a result, the passage formed by the second cylindrical portion 25 gradually increases in cross-sectional area as it goes downward, and the innermost opening 25 b is connected to the steam discharge passage 10 at the lowermost end. The inclined surface 25a has a function of increasing the contact area with the steam passing through the inside of the second cylindrical portion 25 and facilitating the condensation of the steam. Extending portions 29 each having screwing holes 29a for screwing to the bosses 11 formed at the four corners of the steam discharge passage 10 of the lower lid 5 are formed at four locations around the lower end portion of the second cylindrical portion 25. ing.

  A partition wall 30 is formed at a boundary portion between the first tube portion 24 and the second tube portion 25. The partition wall 30 is formed with a plurality of rectangular through holes 30a arranged in parallel in the width direction. By providing the partition wall 30 having a plurality of through holes 30a, it is difficult for small insects and foreign objects to enter from the outside, and the rice balls that have entered the second cylindrical portion 25 (when the rice is boiled, The sticky juice that spills over the wall 30 is difficult to move upward beyond the partition wall 30. Moreover, even if the vapor | steam which passes the 2nd cylinder part 25 condenses in the partition wall 30 and becomes a water droplet, since the 1st cylinder part 24 is extended upwards from there, it is hard to scatter to the exterior.

Next, the operation of the rice cooker having the steam discharge structure having the above-described configuration will be described.
When the internal pressure exceeds 1 atm during rice cooking, steam and rice balls flow into the steam discharge passage 10 where the first pressure regulating valve 21 is disposed via the second pressure regulating valve 22. The steam or rice cake that has flowed into the steam discharge passage 10 that is narrowed by the first pressure regulating valve 21 flows to the second cylindrical portion 25.

  In the second cylindrical portion 25, steam and rice flow along the inclined surface 25a having a large contact area. Therefore, the vapor is likely to condense in the second cylindrical portion 25. Further, of the steam and rice, the steam flows through the plurality of through holes 30 a formed in the partition wall 30 and then flows into the first cylinder portion 24.

  The steam that has passed through the partition wall 30 flows through the first cylindrical portion 24 and is then discharged to the outside. The first cylinder portion 24 is a narrow and narrow passage, and water droplets generated on the upper surface of the partition wall 30 are unlikely to flow out to the outside. Therefore, water droplets generated on the upper surface of the partition wall 30 are not scattered outside the rice cooker.

  Moreover, even if it occurs at the time of cooking rice and flows into the steam discharge passage 10, it is prevented from flowing further outside by the partition wall 30, and returned to the inner pot 3 through the reflux passage (not shown). It is.

  As described above, the steam passing through the passage member 23 is condensed and the generated water droplets are hardly scattered to the surroundings even though the complicated structure for preventing the steam and rice balls from being discharged to the outside is provided. be able to. In addition, it is difficult for the tongue generated by the partition wall 30 formed in the passage member 23 to flow out.

  When cooking rice is finished and the lid 2 is cleaned, the inner lid 20 can be removed from the lid body and washed with water. With the inner lid 20 removed, the heater cover 18 is exposed at the lower lid 5 of the lid body. The exposed heater cover 18 has a first opening 16, and the steam discharge passage 10 and the passage member 23 subsequent thereto are greatly exposed. Therefore, these parts can also be easily cleaned.

In addition, this invention is not limited to the structure described in the said embodiment, A various change is possible.
In the above embodiment, a plurality of rectangular through holes 30a are formed in the partition wall 30 of the passage member 23. However, the through holes 30a may be circular or the like. If it is what. The shape of the passage member 23 itself is not limited to that described above, and the second cylindrical portion 25 has a hollow conical shape (stepped shape) as long as the lower end opening has a larger cross-sectional area than the upper end opening. Etc.), etc.).

DESCRIPTION OF SYMBOLS 1 ... Rice cooker main body 2 ... Cover body 3 ... Inner pan 4 ... Upper lid 5 ... Lower lid 6 ... Lid panel 6a ... Steam port 7 ... Steam opening 8 ... Communication hole 9 ... Locking claw 10 ... Steam discharge passage 11 ... Boss DESCRIPTION OF SYMBOLS 12 ... 1st solenoid 13 ... 2nd solenoid 14 ... Cover reinforcement board 15 ... Packing 16 ... 1st opening part 17 ... 2nd opening part 18 ... Heater cover 19 ... Packing 20 ... Inner lid 21 ... 1st pressure regulation valve (pressure regulation) Part)
22 ... Second pressure regulating valve (pressure regulating section)
DESCRIPTION OF SYMBOLS 23 ... Passage member 24 ... 1st cylinder part 25 ... 2nd cylinder part 25a ... Inclined surface 25b ... Inner opening 26 ... Guide groove 27 ... Packing 28 ... Locking receiving part 29 ... Extension part 30 ... Partition wall 30a ... Through Hole

Claims (4)

It is a steam discharge structure of a rice cooker that discharges steam through a steam discharge part formed on the lid,
The steam discharge part is
A first tube portion extending from a steam port opening on the outer surface of the lid,
A second cylindrical portion extending from the first cylindrical portion while gradually increasing the opening area;
A partition wall that partitions the first tube portion and the second tube portion, and is formed with a plurality of through holes;
Comprising a passage member consisting of
The partition wall in which the plurality of through holes are formed has a function of suppressing movement of the screw,
The steam discharge structure for a rice cooker, wherein the first tube portion has a function of preventing the rice balls from being discharged to the outside . 2. The steam discharge structure for a rice cooker according to claim 1, wherein the second cylindrical portion has an inclined surface extending from one lower end in the horizontal direction toward the upper end in the other direction along the inflow direction of the steam. The lid body includes a removable inner lid,
3. The steam discharge structure for a rice cooker according to claim 1, wherein the second tube portion communicates with a steam discharge passage in which a pressure regulating valve provided on the inner lid is disposed . The steam discharge structure for a rice cooker according to any one of claims 1 to 3, wherein the through hole is disposed along a direction orthogonal to the inflow direction of the steam.

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