JP6523993B2 - rice cooker - Google Patents

Description

  The present invention relates to a rice cooker that prevents boil-over boil-over.

As a conventional rice cooker, a bottomed toner receiver is attached to the surface of the inner lid, and a seal member is attached to the inner surface of the toner receiver (see, for example, Patent Document 1).
In addition, as another rice cooker, the tip of the seal member is curved in the center direction of the plate, and the curved portion is formed with a water reservoir to receive condensation water dripping from the plate when the outer lid is opened. (See, for example, Patent Document 2).

Patent No. 4684329 Patent No. 4961387

  In the above-mentioned conventional rice cooker, when the pressure in the inner pot increases during rice cooking, the sealing property is weak and it becomes easy to enter the ground side from the contact surface between the inner lid and the seal member, causing a blowout. There was a problem called.

  The present invention has been made to solve the problems as described above, and it is an object of the present invention to provide a rice cooker having good sealability even when the pressure in the inner pot increases during rice cooking.

Rice cooker according to the present invention, the lid member and is provided on the inner side of the lid, the inner lid for closing the opening of the inner hook, receptor if Ne Contact mounted detachably contact with the surface of the inner cap And the nozzle receptacle includes a nozzle having a vertically movable valve at the center of the bottom and a plurality of nozzle separating holes provided circumferentially about the valve, and one end of the nozzle receptacle. And a seal member in contact with the surface of the lid, the other end of the seal member being covered by the nozzle reservoir, and one end of the seal member is curved outward.

  According to the present invention, since one end of the seal member in close contact with the surface of the inner lid is curved outward, even if the pressure in the inner pot increases during rice cooking, no adhesion from the outer periphery of the seal member Can prevent the infiltration of For this reason, the steam containing the toner passes through the separation holes and can prevent the blowout.

It is a perspective view which shows the external appearance of the rice cooker which concerns on embodiment of this invention. It is a perspective view which shows the state which opened the cover body in the rice cooker of FIG. It is sectional drawing of the rice cooker seen from the direction of the arrow shown in FIG. It is sectional drawing which expands and shows the inner lid | cover and toner receptacle shown in FIG. FIG. 5 is an enlarged cross-sectional view of the toner receiver of FIG. 4; FIG. 6 is a cross-sectional view showing a modification of the nozzle receiver of FIG. 5;

1 is a perspective view showing the appearance of a rice cooker according to an embodiment of the present invention, FIG. 2 is a perspective view showing the rice cooker of FIG. 1 with a lid opened, and FIG. 3 is an arrow view shown in FIG. It is sectional drawing of the rice cooker seen from the direction.
As shown in FIGS. 1 and 2, the rice cooker 1 according to the present embodiment has a rice cooker main body 2 in which the inner pot 3 is removably accommodated, and a lid body provided openably and closably in the rice cooker main body 2 4 and the inner cover 5 which is detachably provided on the inner side of the lid 4 and which closes the opening of the inner hook 3 and which are detachably engaged with the supports 14 and 16 provided on the surface of the inner lid 5. And a receiver 6. On the front surface of the rice cooker body 2, a lid opening / closing button 2a for opening and closing the lid 4 is provided.

  Although the receptacle 6 will be described later, it is a deep bowl-shaped receptacle having a plurality of nozzle separation holes 9 circumferentially provided around a valve 8 and a valve 8 which can move up and down at the center of the bottom. And a ring-shaped seal member 10, one end of which is in close contact with the surface of the inner lid 5 and the other end of which is covered by a non-sticky reservoir 7.

  A ring-shaped flange portion 3 a molded integrally with the inner hook 3 is provided on the upper outer peripheral surface of the inner hook 3. A ring-shaped packing 5 a made of, for example, silicone rubber is attached to the peripheral edge of the inner lid 5. When the lid 4 is closed, the inner lid 5 abuts the packing 5a on the peripheral edge of the opening of the inner hook 3 to close the opening of the inner hook 3 in a sealed state.

  Inside the rice cooker body 2, as shown in FIG. 3, a heat transfer plate 21 formed in a cylindrical shape and a substantially deep bowl-shaped coil base 22 installed under the heat transfer plate 21 are provided. It is done. A body heater 23 is closely attached to the outer peripheral surface of the heat transfer plate 21. The torso heater 23 is energized at the time of rice cooking and heat retention to generate heat. The heat transfer plate 21 transfers the heat of the barrel heater 23 to the inner pot 3. Note that, instead of the body heater 23, an induction heating coil may be provided on the outer peripheral surface of the heat transfer plate 21.

  Moreover, the induction heating coil 24 is wound and fixed to the outer surface (bottom and corner) of the coil base 22. The induction heating coil 24 generates an alternating magnetic field by energization, and heats the inner pot 3 by electromagnetic induction. In addition, a temperature sensor 25 is provided at the center of the coil base 22 so as to contact the bottom of the inner hook 3 to detect the temperature of the inner hook 3.

  A power supply board 26 is installed inside the rear side of the rice cooker body 2. The power supply substrate 26 is fixed to a substrate holder 26 a disposed on the solder surface (rear surface) side. The power supply substrate 26 is mounted with switching elements for supplying power to the induction heating coil 24, other electronic components, and the like. Further, a radiator 27 in contact with the switching element is attached to the power supply substrate 26 described above. The heat sink 27 has a plurality of heat radiation fins aligned at regular intervals, and is formed of a heat conductive aluminum alloy. Below the radiator 27, a cooling fan 28 is installed.

  An operation board 29 is attached to the inside of the lid 4. On the operation board 29, a microcomputer (not shown) including a control unit for controlling energization of the body heater 23 and the induction heating coil 24 and other electronic components are mounted. Further, at a position on the operation board 29 of the lid 4, an operation panel 31 provided with a menu selection switch, a rice cooker switch, a display window of the liquid crystal display unit 30 and the like is provided. Further, a steam guiding portion 32 communicating with the toner receiver 6 is provided inside the lid 4, and the steam guided to the steam guiding portion 32 is released to the outside on the top of the lid 4. A steam port 33 is provided.

Next, the configuration of the toner receiver 6 will be described with reference to FIGS. 4 and 5.
FIG. 4 is an enlarged sectional view showing the inner lid and the toner receiver shown in FIG. 3, and FIG. 5 is an enlarged sectional view showing the magnetic receiver shown in FIG.

  In FIGS. 4 and 5, as described above, the ring 6 in which the nozzle 6 is in close contact with the surface of the inner lid 5 and the other end is covered by the cylinder 7 as described above. , And the engaging portions 13 and 15. For example, the reservoir 7 is formed in a deep bowl shape by a sheet metal, for example, and a vertically movable valve 8 is inserted in a hole 7a provided at the center of the bottom. The valve 8 moves upward to close the hole 7a when the pressure in the inner kettle 3 rises due to boiling, and lowers downward when the pressure in the inner kettle 3 drops to open the hole 7a. At the same time, the nonstick back hole 8a is opened.

  Further, the nozzle 7 is provided with a plurality of nozzle separation holes 9 in the circumferential direction around the valve 8. When the steam generated at the time of boiling of the rice in the inner pot 3 flows in, the separation hole 9 separates the non-stick contained in the steam. The toner separated by the separation holes 9 flows into the bottom of the storage 7 and is stored.

  The reservoir 7 has a rising edge 7c formed on the entire periphery of the tip of the peripheral edge 7b so as to extend to the inner lid 5 side. The peripheral edge portion 7 b is a ring-shaped recess due to the rising edge portion 7 c when the nozzle reservoir 7 is viewed from the inner lid 5 side.

  The seal member 10 is formed of, for example, a silicon rubber having heat resistance and elasticity, and one end thereof is curved outward so as to be in close contact with the surface of the inner lid 5 and the other end is covered by a nonstick 7. . Further, the seal member 10 is provided with an edge portion 11 provided so as to protrude outward around the entire outer peripheral surface and a protrusion 11 a projecting toward the inner lid 5 on the entire front end of the edge portion 11. In the edge portion 11, a ring-shaped recess 11b is formed in the protrusion 11a. The recess 11 b is fitted in the peripheral portion 7 b of the nozzle 7.

  The engaging portions 13 and 15 are detachably engaged with the supports 14 and 16 provided on the surface of the inner lid 5 (see FIG. 4). Protrusions 13a and 13b fitted in the recess 11b formed in the edge 11 of the seal member 10 are provided in one of the engaging portions 13 and 15. A groove 13c is formed on the outer side of the protrusion 13a of the engaging portion 13 with which the protrusion 11a of the seal member 10 and the rising edge 7c of the holding portion 7 fit.

  Similar to the engagement portion 13, the other engagement portion 15 is provided with protrusions 15 a and 15 b that fit into the recess 11 b formed in the edge portion 11 of the seal member 10. A groove 15c is formed on the outer side of the protrusion 15a of the engaging portion 15 in which the protrusion 11a of the seal member 10 and the rising edge 7c of the holding portion 7 are fitted. The edge portion 11 of the seal member 10 is fixed by being pinched by the projections 13a, 13b, 15a, 15b of the engaging portions 13, 15 fitted in the recess 11b and the peripheral portion 7b of the nonstick portion 7 . This fixing is fixed by the projection 13a of the seal member 10 fitted in the groove 13c of the engaging portion 13 and the groove 15c of the engaging portion 15, and the rising edge 7c of the non-swelling portion 7.

  When mounting the toner receiver 6 on the surface of the inner lid 5, as described above, one of the engaging portions 13 and 15 of the engaging portions 13 and 15 to which the seal member 10 and the toner reservoir 7 are fixed. After being inserted into the support 14, the other engaging portion 15 is pushed toward the inner lid 5 to lock the support 16, and the toner receiver 6 is mounted on the surface of the inner lid 5. By this mounting, the outwardly curved end of the seal member 10 closely contacts the inner lid 5.

  As described above, in the present embodiment, since one end of the seal member 10 in close contact with the surface of the inner lid 5 is curved outward, even when the pressure in the inner pot 3 rises during rice cooking, It is possible to prevent the entry of the toner from the outer periphery of the seal member 10.

  Further, the edge 11 of the seal member 10 is pinched by the protrusions 13a, 13b, 15a, 15b of the engagement portions 13, 15 fitted in the recess 11b of the seal member 10 and the peripheral portion 7b of the nonstick portion 7. It is fixed. As a result, even when the toner receiver 6 is attached to the inner lid 5, the seal member 10 is not pulled off even if it is pulled.

In the present embodiment, the projection 11a of the seal member 10 and the rising edge 7c of the retention portion 7 are respectively fitted in the groove 13c of the engagement portion 13 and the groove 15c of the engagement portion 15. However, as shown in FIG. 6, the protrusion 11a of the seal member 10 and the rising edge 7c of the stagnant storage 7 may be fitted in different grooves.
FIG. 6 is a cross-sectional view showing a modification of the nozzle of FIG. The same parts as in FIG. 5 are denoted by the same reference numerals.

  The engaging portions 17 and 18 are detachably engaged with the supports 14 and 16 provided on the surface of the inner lid 5 similarly to the engaging portions 13 and 15 (see FIG. 4). One of the engaging portions 17 and 18 has a protrusion 17 b fitted in a recess 11 b formed in the edge 11 of the seal member 10 and a peripheral portion 7 b of the filler reservoir 7. A projecting partition wall 17a is provided. Further, an inner groove portion 17 d and an outer groove portion 17 c are formed in the engaging portion 17 by the partition wall portion 17 a. The protrusion 11a of the seal member 10 is fitted in the inner groove 17d, and the rising edge 7c of the nozzle 7 is fitted in the outer groove 17c.

  The other engaging portion 18 includes a protrusion 18 b that fits into a recess 11 b formed in the edge 11 of the seal member 10 and a partition 18 a that protrudes toward the peripheral edge 7 b of the toner reservoir 7. It is provided. Further, an inner groove 18 d and an outer groove 18 c are formed in the engaging portion 18 by the partition 18 a. The protrusion 11a of the seal member 10 is fitted in the inner groove 18d, and the rising edge 7c of the nozzle 7 is fitted in the outer groove 18c.

  Thus, the protrusion 11a of the seal member 10 is fitted to the inner groove portions 17d and 18d of the engagement portions 17 and 18, and the seal member 10 is attached to the engagement portions 17 and 18. The rising edge portion 7c of the reservoir 7 is fitted in the outer grooves 17c and 18c, and the reservoir 7 is attached to the engaging portions 17 and 18, respectively. With this configuration, the attachment of the toner receiver 6 to the seal member 10 and the attachment portion 17 of the toner reservoir 7 is facilitated, and the workability is improved.

  1 rice cooker, 2 rice cooker body, 2a lid opening / closing button, 3 inner pot, 3a pot, 3 lid, 4 lid, 5 inner lid, 5a packing, 6 nozzle receptacle, 7 nozzle reservoir, 7a hole, 7b rim Part, 7c Rising edge part, 8 valve, 8a Sticky return hole, 9 Sticky separation hole, 10 Seal member, 11 edge part, 11a projected part, 11b recessed part, 13 engaging part, 13a, 13b projected part, 13c Grooves, 14 supports, 15 engagement parts, 15a, 15b projections, 15c groove parts, 16 supports, 17 engagement parts, 17a partition parts, 17b projections, 17c outer groove parts, 17d inner groove parts, 18 engagement parts, 18a partition wall portion 18b projection portion 18c outer groove portion 18d inner groove portion 21 heat shield plate 22 coil base 23 body heater 24 induction heating coil 25 temperature sensor 26 power supply substrate 26a substrate holder 7 radiator 28 cooling fan 29 operation substrate 30 liquid crystal display unit, 31 operation panel, 32 steam guiding portion, 33 a steam outlet.

Claims (4)

With a lid ,
An inner lid provided inside the lid and closing an opening of the inner hook;
And a toner receiver detachably mounted on the surface of the inner lid,
The toner receptor is
A valve having a vertically movable valve at the center of the bottom and a nozzle reservoir having a plurality of nozzle separation holes provided circumferentially about the valve;
And a seal member having one end in contact with the surface of the inner lid and the other end covered by the nozzle reservoir,
One end of the said sealing member is curving outward, The rice cooker characterized by the above-mentioned. The seal member has an edge provided to project outward around the entire outer peripheral surface, and a projection that projects toward the inner lid on the entire front end of the edge.
The nozzle reservoir has a rising edge formed extending to the inner lid side around the entire tip of the peripheral edge,
The rice cooker according to claim 1, wherein the nozzle receiver comprises an engagement portion into which the projection of the seal member and the rising edge portion of the nozzle reservoir are fitted. The engagement portion has a protrusion,
The edge of the seal member is formed with a recess by the protrusion of the seal member, and the protrusion of the engagement portion is fitted in the recess, and the protrusion of the engagement portion and the toner storage portion The rice cooker according to claim 2, characterized in that it is pinched and fixed to the peripheral portion of the rice bowl.   The rice cooker according to claim 2 or 3, wherein the engaging portion is provided with a partition portion interposed between the protrusion of the seal member and the rising edge portion of the nozzle storage portion. .

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