JP6524248B2 - rice cooker - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a rice cooker that suppresses the blowout of a cocoon.

  Conventionally, a rice cooker is provided with a separation case for releasing the steam in the rice cooker to the outside at the time of rice cooking (see, for example, Patent Document 1). The separation case is composed of a steam port case having a valve mechanism with an open upper surface, and a steam port cover provided at the upper surface opening of the steam port case. A steam discharge hole is formed in a portion displaced laterally from the position directly above.

  Inside the separation case, several barriers are provided. This barrier weakens the steam or stickiness flowing into the inside of the separation case, prevents the stick from spouting from the steam discharge hole, and only the steam is discharged out of the rice cooker. .

Patent No. 3549457 gazette

However, in the case of the technology disclosed in Patent Document 1, it is necessary to secure a long flow path from the steam inlet to the steam discharge hole. And when input electric power was enlarged in order to cook delicious rice, it needed to secure a flow path longer.
For this reason, the ratio of volume occupied by the toner separation case to the product main body is large, and design restrictions are large. On the other hand, when the separation case is configured to be small, it is necessary to perform control contrary to the taste such as intermittently outputting power.

  This invention is for solving the said subject, and it aims at obtaining the rice cooker by which boil over spillage is suppressed.

In the rice cooker according to the present invention, a main body having an inner pot housing portion for containing an inner pot and heating means for heating the inner pot, and hinged to the main body to cover the upper portion of the inner pot housing portion of the main body. A lid, and a seal member which abuts the side wall outer surface of the inner hook from the main body in a state where the inner hook is accommodated in the main body, and the seal member is a lip in which an inner peripheral end portion hangs downward. A plurality of slits are formed in the lip portion, and the lip portions formed and divided by the slits are vertically offset from the adjacent split lip portions. It is.

  According to the rice cooker which concerns on this invention, the state which the inner pot was accommodated in the main body is equipped with the sealing member contact | abutted from the main body to the side wall outer surface of the inner pot. According to this configuration, the side wall outer surface of the inner hook upper from the point where it is accommodated in the main body and abuts on the seal member in a closed state of the lid touches the outside air. Further, the heat generated at the lower side of the inner hook by the seal member is suppressed from escaping upward. For this reason, the side wall of the upper internal kettle can be cooled by the outside air from the point where it abuts on the seal member, and when the sticky foam rising during heating contacts the inner side wall of the upper part of the internal kettle, Since the foam is cooled and returned to the lower part of the inner pot, it is possible to suppress the toner boil over. Therefore, the batter spillage is suppressed, and delicious rice can be cooked.

It is a perspective view which shows the rice cooker which concerns on Embodiment 1 of this invention. It is explanatory drawing of the AA cross section of FIG. 1 which shows the rice cooker which concerns on Embodiment 1 of this invention. It is an enlarged view which shows the C section of FIG. 2 of the rice cooker which concerns on Embodiment 1 of this invention. It is explanatory drawing of the BB cross section of FIG. 1 which shows the rice cooker which concerns on Embodiment 1 of this invention. It is an enlarged view which shows D part of FIG. 4A of the rice cooker which concerns on Embodiment 1 of this invention. It is the perspective view which cut | disconnected one part which shows the main body which accommodated the inner hook which concerns on Embodiment 1 of this invention. It is a figure which shows the upper surface of the sealing member which concerns on Embodiment 1 of this invention. It is an explanatory view showing a seal member concerning Embodiment 1 of the present invention. It is a figure which shows the lower surface of the seal member which concerns on Embodiment 1 of this invention. It is a perspective view which shows the sealing member which concerns on Embodiment 2 of this invention. It is the perspective view which cut | disconnected one part which shows the sealing member which concerns on Embodiment 2 of this invention. It is a perspective view which shows the sealing member which concerns on Embodiment 3 of this invention. It is explanatory drawing which shows the sealing member which concerns on Embodiment 3 of this invention.

  Hereinafter, an embodiment of a rice cooker according to the present invention will be described. In addition, the form of drawing is an example and does not limit this invention. The same reference numerals in the drawings denote the same or corresponding ones, which are common to the whole text of the specification. Furthermore, in the following drawings, the relationship of the size of each component may differ from an actual thing.

Embodiment 1
FIG. 1 is a perspective view showing a rice cooker 100 according to Embodiment 1 of the present invention. FIG. 2: is explanatory drawing of the AA cross section of FIG. 1 which shows the rice cooker 100 which concerns on Embodiment 1 of this invention. FIG. 3: is an enlarged view which shows the C section of FIG. 2 of the rice cooker 100 which concerns on Embodiment 1 of this invention. FIG. 4A is an explanatory view of a B-B cross section of FIG. 1 showing the rice cooker 100 according to Embodiment 1 of the present invention. FIG. 4B is an enlarged view showing a portion D of FIG. 4A of the rice cooker according to Embodiment 1 of the present invention. FIG. 5 is a partially cut perspective view showing the main body 1 accommodating the inner hook 6 according to Embodiment 1 of the present invention.

As shown in FIGS. 1 to 5, a rice cooker 100 according to Embodiment 1 of the present invention includes a main body 1.
In the upper part of the main body 1, an upper opening of the inner pot housing 15 is formed. The upper opening is opened and closed by a lid 3 which covers the upper portion of the inner hook accommodating portion 15 of the main body 1 axially connected to the main body 1 by a hinge 2.

  The lid 3 is urged in an open direction in which the upper opening is always opened by a hinge spring (not shown). Further, the lid 3 is opened and closed by a latch and a latch release button 4 which are not shown.

  An inner lid 5 is detachably provided on the lower surface of the lid 3. The inner lid 5 is fixed to a fixed frame 8 to which an annular packing 7 for sealing the opening of the inner hook 6 is fixed.

  A heater 9 is provided between the lid 3 and the inner lid 5 and the surface on the inner lid 5 side is covered with a metal plate (not shown). The heater 9 generates heat by resistance heating when power is supplied. The heater 9 is a linear heater put on the lid 3.

On the upper side of the inner lid 5 of the lid 3 is attached a separation case 10 which separates the toner mixed in the steam. A guide cylinder 11 and an on-off valve 12 are provided in the separation case 10. The steam which has flowed in from the steam hole (not shown) at the lower end portion of the guide cylinder 11 passes through the nozzle separation case 10 of the lid 3 and is discharged to the outside from the steam discharge hole 13 above the lid 3. When the heating is stopped and the internal pressure of the inner pot 6 is reduced and the on-off valve 12 is opened, the lubricant is returned to the inner pot 6.
The separation case 10 has a function of separating the steam generated during cooking and the sticky, guiding the steam to the steam discharge hole 13 and returning the sticky to the inner pot 6.

  Further, a temperature sensor 14 is installed on the lid 3. The temperature sensor 14 is disposed between the heater 9 and the separation case 10.

  The rice cooker 100 is provided with an inner pot accommodating portion 15 which becomes a coil base in the main body 1, and a bottomed cylindrical inner pot 6 into which water, rice, etc. can be put is detachably accommodated in the inner pot accommodating portion 15 Ru. The inner pot 6 is made of SUS. The inner pot 6 is heated and cooked by the electromagnetic induction coil 16 as a heating means disposed around the central portion of the lower surface of the inner pot storage portion 15 and at the corner portion of the outer periphery thereof.

  The outer surface of the inner pot 6 is subjected to uneven processing such as blasting or coating of unevenness, and the like, and has unevenness on the surface.

  The inner hook 6 is sealed by the packing 7 provided on the inner lid 5 side being pressed against the upper surface of the flange 6 a when the lid 3 is closed.

  Further, a through hole 17 is formed in the center of the bottom of the inner pot housing portion 15. An inner pot temperature sensor 18 is installed in the through hole 17 so as to be freely retractable.

Next, the support structure of the inner hook 6 will be described.
The inner hook 6 is formed with a flange 6 a that extends radially outward at the top. As shown in FIG. 5, the flanges 6 a are placed on a plurality of supports 19 projecting upward at the edge of the upper opening of the inner hook accommodating portion 15 of the main body 1 when accommodated in the inner hook accommodating portion 15. Be supported. A plurality of supports 19 are circumferentially dotted at the edge of the upper opening. For this reason, the inner hook 6 is supported by the plurality of supports 19 so that the upper portion thereof protrudes from the inner hook receiving portion 15 in a state of being received in the inner hook receiving portion 15. For this reason, in the rice cooker 100, an internal space 30 surrounded by the main body 1, the lid 3 and the inner pot 6 is formed.

  A clearance 31 is formed between the main body 1 and the lid 3, and the internal space 30 communicates with the external space 32 extending outside the rice cooker 100 via the clearance 31. For this reason, when the lid 3 is closed, the upper portion of the inner hook 6 protruding from the inner hook accommodating portion 15 of the main body 1 is the gap 31 between the main body 1 and the lid 3 Touch the fresh air coming from the house. In particular, as shown in FIG. 5, in the inner hook 6, the upper part of the inner hook 6 is exposed from the inner hook accommodating portion 15 of the main body 1 at a portion not supported by the plurality of supports 19. The outer side directly touches the outside air flowing in from the gap 31 between the main body 1 and the lid 3.

Next, the seal member 20 will be described.
The inner hook housing portion 15 is provided with a seal member 20 which abuts on the outer wall of the inner hook 6 from the main body 1 in a state where the inner hook 6 is housed in the inner hook housing portion 15. The seal member 20 is formed of an elastic body of a heat-resistant soft material such as silicone rubber.

FIG. 6A is a view showing the upper surface of the seal member 20 according to Embodiment 1 of the present invention. FIG. 6B is an explanatory view showing the seal member 20 according to Embodiment 1 of the present invention. FIG. 6C is a view showing the lower surface of the seal member 20 according to Embodiment 1 of the present invention.
As shown in FIGS. 6A to 6C, the seal member 20 is ring-shaped, and is disposed along the side wall of the inner hook accommodating portion 15 along one lateral side. The seal member 20 is fixed to the inner hook accommodating portion 15 by being fitted inside a hollow having a circular cross section in accordance with a cylindrical bending process formed on the side surface of the inner hook accommodating portion 15.

  As shown in FIG. 2, FIG. 4A, and FIG. 5, the seal member 20 is disposed above the maximum water line 21 at the maximum cooking amount of the inner pot 6. That is, the maximum water line 21 at the maximum cooking amount of the inner pot 6 is located lower than the seal member 20 in contact with the side wall outer surface of the inner pot 6.

  As shown in FIGS. 2 to 6C, the seal member 20 has a lip portion 20a whose inner peripheral end portion hangs downward. The inner diameter of the lip portion 20 a is smaller than the outer diameter of the inner hook 6. In addition, the lip portion 20 a hangs down inward in the radial direction from the inner peripheral portion of the upper end of the seal member 20. Therefore, when the inner hook 6 is accommodated in the inner hook accommodating portion 15, the upper surface of the lip portion 20 a abuts on the outer surface of the inner hook 6.

  As shown in FIG. 6A, the upper surface of the lip portion 20a has no protrusion and is in surface contact with the inner hook 6 over the entire circumference. Therefore, when the inner hook 6 is accommodated in the inner hook accommodating portion 15 of the main body 1, the seal is reliably made. To be done. Thus, the heat generated by heating the lower portion of the inner hook 6 in the inner hook accommodating portion 15 is prevented from escaping above the sealing member 20. Conversely, the upper side wall of the inner hook 6 in the inner hook accommodating portion 15 is likely to be cooled by being exposed to the air above the sealing member 20.

  The seal member 20 having the lip portion 20a is formed by a blasting-treated mold and has irregularities on the surface of the lip portion 20a. The unevenness of the surface of the lip portion 20a, together with the unevenness of the outer surface of the inner hook 6, reduces the sliding resistance of the inner hook 6 to the lip portion 20a when the inner hook 6 is accommodated in the inner hook accommodating portion 15.

  As shown in FIG. 6C, a plurality of projections 20b are formed on the lower surface of the seal member 20 near the tip of the lip portion 20a. The plurality of protrusions 20b are equally spaced at uniform intervals on the ring-shaped lip portion 20a. When the inner hook 6 housed in the inner hook housing portion 15 is lifted, the lip portion 20 a is turned over and the lower surface is in contact with the inner hook 6. At this time, the plurality of projections 20b on the lower surface of the lip portion 20a are in point contact with the inner hook 6, the sliding resistance is reduced, and the inner hook 6 can be easily removed from the inner hook accommodating portion 15 .

Next, the operation in the case of cooking with the rice cooker 100 configured as described above will be described.
The inner pot 6 containing water and rice is accommodated in the main body 1 of the rice cooker 100, the lid 3 is closed, and the rice cooker switch provided on the operation unit 22 is turned on. Is heated. When the water in the inner pot 6 boils, a steam containing oil is generated. At this time, since the internal pressure of the inner pot 6 is rising, the on-off valve 12 of the separation case 10 is pushed up and closed. For this reason, the steam containing the toner is guided from the steam holes through the guide cylinder 11 into the non-sticky separation case 10. The non-sticky separation case 10 separates the steam and the stickiness generated during cooking and guides the steam to the steam discharge hole 13. Then, when the heating is stopped and the internal pressure of the inner pot 6 is lowered, the on-off valve 12 is lowered and opened by its own weight and the weight of the stick, and the stick is returned to the inner pot 6.

  On the other hand, the lip portion 20a of the seal member 20 abuts on the outside of the side wall of the inner hook 6, and the side wall of the inner hook 6 protrudes from the inner hook receiving portion 15 of the main body 1 in a state of being accommodated in the inner hook accommodating portion 15. The outer side of the upper part touches the outside air flowing from the gap 31 between the main body 1 and the lid 3. Further, the heat generated at the lower side of the inner hook 6 is suppressed by the sealing member 20 from escaping upward. For this reason, the side wall of the inner hook 6 above the portion in contact with the seal member 20 can be cooled by the outside air, and during heating, the foam which has risen radially outward in the inner hook 6 is the inner hook 6. When the inner side wall of the upper part of the inner shell contacts the inner side, the foam is cooled and returned to the lower part of the inner caul 6 so that it is possible to suppress the blowout of the sticky. Therefore, even if the input power or the duration of the input power is long, the blowout of the stick is suppressed, and delicious rice can be cooked.

Second Embodiment
In the second embodiment, the shape of the lip portion 20a of the seal member 20A is different from that of the above embodiment. The other configuration is the same as that of the first embodiment, so only the characteristic part will be described.

FIG. 7A is a perspective view showing a seal member 20A according to Embodiment 2 of the present invention. FIG. 7B is a partially cut perspective view showing a seal member 20A according to Embodiment 2 of the present invention.
In the seal member 20A according to the second embodiment, a plurality of slits 20c are formed in the lip portion 20a. The plurality of slits 20c are equally spaced at uniform intervals in the ring-shaped lip portion 20a.

  As a result, the sliding resistance between the inner hook 6 and the lip portion 20a is reduced, and the inner hook 6 accommodated in the inner hook accommodating portion 15 can be easily taken out.

Third Embodiment
In the third embodiment, the shape of the lip portions 20a1 and 20a2 of the seal member 20B is different from that of the above-described embodiment. The other configuration is the same as that of the first embodiment, so only the characteristic part will be described.

FIG. 8A is a perspective view showing a seal member 20B according to Embodiment 3 of the present invention. FIG. 8B is an explanatory view showing a seal member 20B according to Embodiment 3 of the present invention.
In the seal member 20B according to the third embodiment, the lip portions 20a1 formed and divided by the slits 20c are disposed vertically offset from the lip portions 20a2 adjacent to each other. That is, the divided lip portions 20a1 and 20a2 are composed of the upper lip portion 20a1 and the lower lip portion 20a2.

  As a result, when the inner hook 6 is put in and out, the inner hook 6 is supported by the lip portions 20a1 and 20a2 which are offset and arranged in the vertical direction and divided so as to suppress the inner hook 6 from being inclined. As a result, the user can easily carry out the work of the inner hook 6. Further, the sliding resistance between the inner hook 6 and the lip portions 20a1 and 20a2 is reduced, and the inner hook 6 accommodated in the inner hook accommodating portion 15 can be easily taken out.

  According to the first to third embodiments described above, the rice cooker 100 includes the inner pot housing portion 15 for housing the inner pot 6 and the main body 1 having the electromagnetic induction coil 16 for heating the inner pot 6. The rice cooker 100 is provided with a lid 3 hinged to the main body 1 and covering the upper portion of the inner pot housing portion 15 of the main body 1. The rice cooker 100 is provided with the seal member 20 which abuts on the side wall outer surface of the inner pot 6 from the main body 1 in a state where the inner pot 6 is accommodated in the main body 1. According to this configuration, the sealing member 20 suppresses the heat generated below the inner hook 6 from escaping upward. Therefore, the side wall of the inner hook 6 above the portion in contact with the seal member 20 can be cooled by the outside air, and when the sticky foam which has been raised during heating contacts the inner side wall of the upper portion of the inner hook 6, Since the foam of the toner is cooled and returned to the lower part of the inner pot 6, the blowout of the toner can be suppressed. Therefore, even when the input power is large or the duration of the input power is long, batter spillover is suppressed, and delicious rice can be cooked.

  In addition, even when the input power is increased to cook delicious rice, it is not necessary to secure a long flow path in the separation case 10. For this reason, the ratio of the volume occupied by the toner separation case 10 to the product main body can be small, and the design restriction can be reduced. Moreover, control contrary to the taste such as outputting electric power intermittently is not necessary.

  With the lid 3 closed, the internal space 30 surrounded by the main body 1, the lid 3 and the inner hook 6 communicates with the external space 32 through the gap 31 formed between the main body 1 and the lid 3. ing. According to this configuration, the outside of the upper side wall of the inner hook 6 is exposed to the outside air while being accommodated in the main body 1. Therefore, the side wall of the inner hook 6 above the portion in contact with the seal member 20 can be cooled by the outside air, and when the sticky foam which has been raised during heating contacts the inner side wall of the upper portion of the inner hook 6, Since the foam of the toner is cooled and returned to the lower part of the inner pot 6, the blowout of the toner can be suppressed. Therefore, even when the input power is large or the duration of the input power is long, batter spillover is suppressed, and delicious rice can be cooked.

  The inner hook 6 has a flange 6a extending radially outward at the uppermost portion, and the main body 1 projects upward at the edge of the upper opening of the inner hook accommodating portion 15 to support the flange 6a. A support 19 is provided. According to this configuration, the inner hook 6 can project the side wall upper portion from the inner hook accommodating portion 15 of the main body 1 while being accommodated in the main body 1. Therefore, the side wall upper portion of the inner hook 6 protrudes from the inner hook accommodating portion 15 of the main body 1 at a portion not supported by the plurality of supports 19 to expose the outside of the side wall upper portion, and the lid 3 is closed. The outside of the upper side wall of the inner hook 6 contacts the outside air flowing from the gap between the main body 1 and the lid 3.

  The maximum water level line 21 at the time of the maximum cooking amount of the inner pot 6 is located lower than the seal member 20 in contact with the outer surface of the inner pot 6. According to this configuration, it is possible to heat the water and the rice in a state where the heat generated below the inner pot 6 by the seal member 20 does not escape upward.

  The seal member 20 has lip portions 20a, 20a1 and 20a2 in which the inner peripheral end hangs downward. According to this configuration, the upper surfaces of the lip portions 20a, 20a1 and 20a2 contact the inner hook 6 housed in the inner hook housing portion 15 of the main body 1, and the heat generated below the inner hook 6 does not escape upward Improve. In addition, when the lip portions 20a, 20a1 and 20a2 hang downward, the lip portions 20a, 20a1 and 20a2 do not get in the way when the inner hook 6 is accommodated in the inner hook accommodating portion 15 of the main body 1.

  A plurality of projections 20b are formed on the lower surface near the tip of the lip portions 20a, 20a1 and 20a2. According to this configuration, when the inner hook 6 is taken out, the lip portions 20a, 20a1 and 20a2 turn over and the plurality of projections 20b contact the inner hook 6. As a result, the lip portions 20a, 20a1 and 20a2 and the inner hook 6 are in point contact with each other, so that the sliding resistance is reduced and it is easy to take out. In addition, since the upper surfaces of the lip portions 20a, 20a1 and 20a2 do not have a protrusion, when the inner hook 6 is accommodated in the inner hook accommodating portion 15 of the main body 1, sealing is reliably performed and heat is less likely to escape upward.

  The lip portions 20a, 20a1 and 20a2 have unevenness on the surface. According to this configuration, the sliding resistance between the inner hook 6 and the lip portions 20a, 20a1 and 20a2 is reduced, and the housing of the inner hook 6 becomes easy.

  The outer surface of the inner pot 6 has irregularities on the surface. According to this configuration, the sliding resistance between the inner hook 6 and the lip portions 20a, 20a1 and 20a2 is reduced, and the housing of the inner hook 6 becomes easy.

  A plurality of slits 20c were formed in the lip portions 20a, 20a1 and 20a2. According to this configuration, the lip portions 20a, 20a1 and 20a2 are easily deformed, and the work of the inner hook 6 is facilitated.

  The lip portions 20a1 and 20a2 which are divided by forming the slits 20c are disposed vertically offset from the adjacent divided lip portions 20a1 and 20a2. According to this configuration, the inner hook 6 is supported by the lip portions 20a1 and 20a2 which are offset and arranged in the vertical direction when the inner hook 6 is put in and out, and the inner hook 6 is prevented from being inclined. As a result, the user can easily carry out the work of the inner hook 6.

  In addition, it is also planned from the beginning to combine the structure of said each embodiment suitably. Further, it should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is shown not by the above description but by the scope of claims, and is intended to include all modifications within the scope and meaning equivalent to the scope of claims.

  DESCRIPTION OF SYMBOLS 1 main body, 2 hinges, 3 lids, 4 latch release buttons, 5 inner lids, 6 inner hooks, 6 a flanges, 7 packings, 8 fixed frames, 9 heaters, 10 non-sticky cases, 11 guide cylinders, 12 on-off valves, 13 steam discharge hole, 14 temperature sensor, 15 inner pot housing part, 16 electromagnetic induction coil, 17 through hole, 18 inner pot temperature sensor, 19 support body, 20 seal member, 20A seal member, 20B seal member, 20a lip part, 20a1 upper lip part, 20a2 lower lip part, 20b protrusion, 20c slit, 21 maximum water level line, 22 operation part, 30 internal space, 31 gap, 32 external space, 100 cooker.

Claims (8)

An inner kettle housing portion for housing an inner kettle and a main body having heating means for heating the inner kettle;
A lid which is hinged to the body and covers an upper portion of the inner hook accommodating portion of the body;
A sealing member that abuts the side wall outer surface of the inner hook from the main body with the inner hook housed in the main body;
Equipped with
The seal member has a lip portion in which an inner peripheral end portion descends downward,
A plurality of slits are formed in the lip portion,
The said lip | rip part by which the said slit was formed and cut | disconnected is a rice cooker arrange | positioned up-down with the said cut | divided said lip | rip part which adjoined. The rice cooker according to claim 1 , wherein a gap is formed between the lid and the main body in a state where the lid is closed. The rice cooker according to claim 1 or 2 , wherein the upper portion of the side wall outer surface of the inner pot protrudes upward from the inner pot storage portion. The inner kettle has a flange extending radially outward at the top,
The rice cooker according to any one of claims 1 to 3 , wherein the main body has a plurality of supports projecting upward at an edge of the inner pot housing portion to support the flange. The rice cooker according to any one of claims 1 to 4 , wherein the maximum water level line at the time of maximum rice cooking amount of the inner pot is located lower than the seal member in contact with the side wall outer surface of the inner pot. The rice cooker according to any one of claims 1 to 5 , wherein a plurality of protrusions are formed on the lower surface near the tip of the lip portion. The rice cooker according to any one of claims 1 to 6 , wherein the lip portion has irregularities on the surface. The rice cooker according to claim 7 , wherein the outer surface of the inner pot has irregularities on the surface.

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