JP2003135268A - Rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice cooker having an inner lid mounted on a lid for covering the upper part of the rice cooker body to be freely opened and closed, capable of preventing steam and glutinous matter from flowing into the top surface of the inner lid through a gap between the outer periphery of the inner lid and the pot due to lifting of the inner lid caused by steam pressure during cooking of rice to improve boil-over performance and improve taste. SOLUTION: The pot 2 having a flange part 2a on the upper edge is housed in the interior of the rice cooker body 1, and the lid 3 is rotatably journaled to a rear hinge part 4 of the rice cooker body 1 to cover the upper part of the rice cooker body 1 to be freely opened and closed. The lid 3 includes a pot packing 14 for sealing a steam port 8 serving as a passage of steam, the flange part 2a of the pot 2 and the lid 3, and a radiating plate 9. The inner lid 13 shaped substantially disc-shape and having an inner lit steam port 13c serving as a passage of steam is removably mounted on the lit 3, and an inner lid packing 18 formed of an elastic body is disposed between the inner lid 13 and the radiating plate 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker in which an inner lid is provided on a lid which covers the upper part of the rice cooker so as to be openable and closable.

[0002]

2. Description of the Related Art Conventionally, this type of rice cooker has been constructed as shown in FIG. The configuration will be described below.

As shown in FIG. 7, a rice cooker main body 61 is formed in a cylindrical shape having an open upper surface, and a pot 62 having a flange portion 62a is housed inside the rice cooker main body 61. The lid 63 is pivotally supported by a hinge shaft 65 attached to a hinge portion 64 at the rear of the rice cooker body 61, and rotatably covers the upper surface of the rice cooker body 61 and the pan 62.

The heater section 66 heats the pot 62 to cook rice and keep it warm. Here, if the heater portion 66 is an induction heating type, it is possible to cook rice with higher heat and deliciously.
The control unit 67 controls the energization amount of the heater unit 66 during rice cooking and heat retention.

The steam port 68 is provided on the lid 63 so that the pot 6 can be cooked during cooking.
The steam generated from inside 2 is discharged to the outside. The radiator plate 69 has a lid heater 70, and the lid heater 70 generates a heat insulating layer in the space between the inner lid 73 and the radiator plate 69.
By keeping the temperature in the pan 62 approximately uniform, the state of rice for heat retention is improved.

The steam port 69a provided on the heat dissipation plate 69 is connected to the steam port 68, and the steam from the pot 62 passes therethrough. A steam port packing 75 is provided between the steam port 68 and the heat dissipation plate 69 to prevent steam during cooking from entering the inside of the lid 63. Further, the space between the outer periphery of the heat dissipation plate 69 and the flange portion 62a of the pan 62 is sealed by a pan packing 74 to prevent steam during cooking from leaking to the outside.

[0007] The inner lid 73 is provided with a plurality of steam ports 73a through which steam or rice cooked in cooking rice passes. The steam during rice cooking passes through the steam port 73a, passes through the steam port 69a of the upper heat radiating plate 69, and flows out to the outside. On the other hand, since the specific gravity of the oneba is heavier than that of the steam, the oneba is separated from the steam at the steam port 73a and collected in the concave portion of the inner lid 73 to prevent the oneba from flowing out and spilling out.

The inner lid 73 is detachably attached to the inner lid shaft 71 attached to the heat radiating plate 69 via the inner lid rubber 72 made of an elastic body. When the lid 63 is closed, the inner lid 7
3 and the pan packing 74 have a slight gap.

[0009]

However, in such a conventional configuration, the inner lid 73 is lifted up by the steam pressure during rice cooking, and steam and sticks are discharged from the gap between the outer periphery of the inner lid 73 and the pot 62. leak. Therefore, the concave portion of the inner lid 73 is easily filled with the stick, and the stick that overflows from the concave portion of the inner lid 73 flows out to the outside after passing through the steam port 69a of the heat radiating plate 69 and spills out. Also, in order to prevent spillage, you must reduce the heating power when cooking rice,
The heating power for cooking rice can only be added to the extent that it does not spill out,
It was a barrier to improving the taste.

Further, since the inner lid 73 and the heat radiating plate 69 are required to have heat resistance and rustproof property, an aluminum plate whose surface is anodized is often used, but the inner lid 73 and the heat radiating plate 69 are the lid 63. There is a problem in that when they are opened and closed, they come into contact with each other, and a very jarring sound is generated.

The present invention is intended to solve the above-mentioned problems, and the inner lid is lifted up by the steam pressure during rice cooking so that steam or sticks from the gap between the outer periphery of the inner lid and the pan flow into the upper surface of the inner lid. Its purpose is to prevent spillage, improve spillover performance, and improve taste.

[0012]

In order to achieve the above object, the present invention accommodates a pot having a flange portion at its upper edge inside a rice cooker body, and rotates a lid around a hinge portion at the rear of the rice cooker body. It is configured to rotatably support the upper part of the rice cooker so that it can be opened and closed, and the lid is equipped with a steam port that serves as a steam passage, a flange portion of the pan, and a pan packing that seals the lid and a radiator plate. An inner lid having a substantially disc-shaped inner lid having a steam port serving as a steam passage is detachably attached, and an inner lid packing formed of an elastic body is disposed between the inner lid and the heat radiating plate.

Thus, the inner lid can be prevented from being lifted upward by the steam pressure during rice cooking and steam or sticks leaked from the gap between the outer periphery of the inner lid and the pot to flow into the upper surface of the inner lid.
It is possible to improve the spilling performance and improve the taste. In addition, the rattling noise caused by the contact between the inner lid and the heat sink is eliminated.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is a pot having a flange portion at its upper edge, a rice cooker body for accommodating the pot therein, and a hinge portion behind the rice cooker body. And a lid that rotatably supports the rice cooker and covers the top of the rice cooker so that it can be opened and closed. The lid is a steam port that serves as a steam passage, a flange portion of the pot, and a pot packing that seals the lid and heat dissipation. An inner lid that is equipped with a plate and has a substantially disc-shaped inner lid and a steam port that has a steam port is detachably attached, and an inner lid packing formed of an elastic body is arranged between the inner lid and the heat dissipation plate. , The inner lid is lifted up by the steam pressure during rice cooking, and it is possible to prevent steam and sticks leaked from the gap between the outer periphery of the inner lid and the pan from flowing into the upper surface of the inner lid, improving the spilling performance. At the same time, the taste can be improved.
In addition, the rattling noise caused by the contact between the inner lid and the heat dissipation plate can be eliminated.

According to a second aspect of the present invention, in the first aspect of the present invention, the inner lid packing is formed of an annular elastic body and is detachably attached to the inner lid so as to cover the outer periphery of the inner lid. Since the inner lid packing can be easily attached to and detached from the inner lid, and the inner lid packing can be removed and washed, it is possible to improve careability.

According to a third aspect of the present invention, in the above-mentioned first or second aspect of the present invention, the inner lid packing is provided with a slight gap between the inner lid packing and the heat radiating plate. Since a finger can be hooked between the heat sinks, the inner lid can be easily attached to and detached from the lid.

According to a fourth aspect of the present invention, in the above-mentioned second or third aspect of the present invention, the inner lid packing has a textured surface abutting against the heat radiating plate, and the inner lid radiates heat. It is possible to prevent the plate from coming into close contact with the inner lid and improve the detachability of the inner lid.

According to a fifth aspect of the present invention, in the invention according to the second or third aspect, the inner lid packing has a textured surface that abuts against the inner lid. It can be easily attached to the inner lid.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) As shown in FIG. 1, a rice cooker main body 1 is formed in a cylindrical shape with an open upper surface, and a pot 2 having a flange portion 2a is housed inside the rice cooker main body 1. . The lid 3 is pivotally supported by a hinge shaft 5 attached to a hinge portion 4 at the rear of the rice cooker body 1 and rotatably covers the upper surface of the rice cooker body 1 and the pan 2.

A hook lever 22, a hook lever spring 23, and a hook lever shaft 24 are provided on the side of the lid 3 opposite to the hinge portion 4.
And a handle 25, and a lid hook portion 3c fixed to the lid 3 with a screw 26 is provided. When the lid is closed, the hook lever 22 engages with the hook portion 1c of the rice cooker body 1, and the lid is closed by steam pressure during rice cooking. It prevents the 3 from opening.

The heater section 6 heats the pot 2 to cook rice and keep it warm. Here, as shown in FIG. 1, if the heater portion 6 is an induction heating type, it is possible to cook delicious rice with a higher heating power as compared with a cast heater type. The pan sensor 20 detects the temperature of the pan 2 and sends a signal to the control unit 7. The control unit 7 controls the energization amount of the heater unit 6 by the signal of the pan sensor 20 to cook rice and keep warm.

Although a large amount of steam is ejected from the material to be cooked in the pan 2 during cooking rice, the lid 3 is provided with a steam port 8 serving as a passage for discharging steam to the outside during cooking rice. And is discharged to the outside. Inside the lid 3, a heat dissipation plate 9 having a lid heater 10 is provided.

The moisture generated from the food to be cooked while keeping warm is covered by the lid 3.
The rice is chilled inside the container to generate dew condensation, and the rice is bleached by dropping it on the rice while it is warm. However, as in the present embodiment, the inside of the lid 3 is shielded by the heat dissipation plate 9, and the heat dissipation plate 9
Is heated by the lid heater 10, the dew condensation on the lid 3 is eliminated, and the cooked rice does not whiten. In addition, when the substantially disk-shaped inner lid 13 is arranged between the heat radiating plate 9 and the pot 2, a heat insulating layer is formed in the space between the heat radiating plate 9 and the inner lid 13, so that the temperature in the pot 2 is approximately uniform. Since it is kept and the dew condensation in the pot 2 is less likely to occur, the state of rice while warming is even better.

The heat dissipation plate 9 has a steam port 9 communicating with the steam port 8.
a is provided, and steam during cooking passes through the steam port 9a,
It is guided to the steam port 8 and discharged to the outside. A steam port packing 15 is provided between the steam port 8 and the heat radiating plate 9 in order to prevent steam from entering the inside of the lid 3. A space between the outer peripheral portion of the heat radiating plate 9 and the flange portion 2a of the pan 2 is sealed by a pan packing 14 to prevent steam from leaking outside from the steam port 9a of the heat radiating plate 9.

As shown in FIG. 2, the inner lid 13 has an inner lid flange portion 13a on the outer periphery which abuts the flange portion 2a of the pot 2, and the cross-sectional shape of the inner lid 13 is from the inner lid flange portion 13a to the pot. It descends once along 2 and rises toward the center. An inner lid rubber fitting portion 13b into which the inner lid rubber 12 formed of an elastic body is fitted is provided in the central portion. Inner lid steam ports 13c and inner lid recirculation holes 13d are provided at a plurality of positions in the vicinity of the inner lid rubber fitting portion 13b and in the vicinity of the lowest point of the cross-sectional shape of the inner lid 13, and the cross-sectional areas of the holes are The inner lid steam port 13c near the inner lid rubber fitting portion 13b is larger than the inner lid recirculation hole 13d near the lowest point.

The inner lid 13 is removably attached to the inner lid shaft 11 crimped to the heat radiating plate 9 through the inner lid rubber 12 by a press-fitting method using the elastic force of the inner lid rubber 12. When the inner lid 13 is attached, the inner lid rubber removal preventing portion 11a of the inner lid shaft 11 is arranged so that the inner lid 13 can move axially on the inner lid shaft 11.
Is slightly longer than the fitting position of the inner lid rubber 12 when the lid is closed.

The inner lid packing 18 is crimped to the inner lid 13 so that the outer periphery of the inner lid 13 is folded inward, and the inner lid 1 is attached.
3 is attached to the upper surface of the outer circumference.

The operation of the above configuration will be described. The steam generated from the food to be cooked during rice cooking passes through a plurality of inner lid steam ports 13c provided in the inner lid 13 and the inner lid recirculation holes 13d, and flows out to the steam port 9a of the heat dissipation plate 9. Here, since the specific gravity of the squirt that spouts in the form of bubbles together with the steam is much heavier than that of the steam, the inner cover steam port 13c of the inner cover 13 and the inner cover recirculation hole 13
When passing through d, it is separated from the vapor and accumulates on the inner lid 13 in the form of a liquid stick.

Since the inner lid steam port 13c in the vicinity of the inner lid rubber fitting portion 13b is larger than the inner lid recirculation hole 13d in the vicinity of the lowest point of the inner lid 13, the inner lid steam port 13c is the one. More steam and squirts come out of the room. Therefore, the inner lid 13
The upper bed is collected in the lower part of the inner lid 13. During steaming, when the steam and the gushing of the stick are stopped, the steam pressure in the pan 2 drops, and the stick that has accumulated in the inner lid 13 is discharged from the inner lid return hole 13d near the lowest point of the inner lid 13 to the pan 2. Is refluxed in.

Here, in the conventional rice cooker, the inner lid is not held anywhere other than being supported by the inner lid shaft via the inner lid rubber, and even if the lid is closed, it moves slightly in the vertical direction. Because of the structure, the inner lid was lifted by the steam pressure during rice cooking, and the sticks tended to squirt out between the pan and the lid, and the sticks were likely to collect on the top of the lid.

Finally, the sticks accumulate on the inner lid to such an extent that the hole near the inner lid rubber is covered with the stick, and the stick is blown up again into a bubble shape in the hole near the inner lid rubber, and finally It had spilled on the lid through the steam port. When the heating power was increased, the vapor pressure during rice cooking also increased, so this phenomenon occurred even more significantly.

However, in the rice cooker of this embodiment, since the space between the inner lid 13 and the heat radiating plate 9 is sealed by the inner lid packing 18, the inner lid 13 is ejected by being lifted by the vapor pressure during rice cooking. The sticks from between the pot 2 and the inner lid 13 do not collect on the upper surface of the inner lid 13.

In addition, the inner lid packing 18 is attached to the upper surface of the outer periphery of the inner lid 13 by crimping the inner lid 13 so that the outer periphery of the inner lid 13 is folded inward, so that the heating power for cooking rice can be increased. As the inner lid 13 is raised, the inner lid 13 is lifted to the heat dissipation plate 9 side, so that the sealing effect of the inner lid packing 18 is enhanced. Therefore, the bean is unlikely to collect on the inner lid 13 and is unlikely to spill over. In addition, the heat power during cooking rice can be increased, and the taste of rice can be improved.

In the conventional rice cooker, the inner lid is supported by the inner lid shaft via the inner lid rubber and is not held anywhere. Even when the lid is closed, the lid works slightly in the vertical direction. Therefore, the inner lid and the heat sink were in contact with each other, and the rattling noise was generated.

The rice cooker of the present embodiment has an inner lid 13 and a heat radiating plate 9.
Since the inner lid packing 18 made of an elastic body is interposed between and, the inner lid 13 and the heat dissipation plate 9 do not come into contact with each other. Therefore, the rattling sound of the inner lid 13 does not occur.

(Embodiment 2) As shown in FIG. 3, the inner lid packing 18a is formed of an annular elastic body, and when attached to the inner lid 13, as shown in FIG. It is detachably attached to the inner lid 13 so as to cover it. At this time, the inner diameter of the inner lid packing 18a is slightly smaller than the outer diameter of the inner lid 13, and the inner lid packing 18a is fixed to the inner lid 13 by the elasticity of the inner lid packing 18a. The other structure is the same as that of the first embodiment.

The operation of the above structure will be described. The inner lid packing 18a is exposed to the agar that is generated from the cooked food during rice cooking and becomes dirty, but since it can be removed from the inner lid 13 and washed, it can be easily maintained. Moreover, since the inner lid packing 18a is formed of an elastic body, the inner lid 13
It can be easily attached and detached.

(Embodiment 3) As shown in FIG. 5, the inner lid packing 18b is provided with a slight gap between it and the heat dissipation plate 9. The other structure is the same as that of the first or second embodiment.

The operation of the above structure will be described. During rice cooking, the inner lid 13 is lifted upward by steam pressure, the inner lid packing 18b and the heat radiating plate 9 contact each other, and the pot 2 and the inner lid 13
The steam or the gushing from the gap does not flow into the upper surface of the inner lid 13. Therefore, the spillage is less likely to occur, and the heating power during rice cooking can be increased, so that the taste can be improved.

In addition, when rice is not cooked, there is a gap between the inner lid packing 18b and the heat radiating plate 9 so that a finger can be caught between the inner lid packing 18b and the heat radiating plate 9. Therefore, the inner lid 13 can be easily attached to and detached from the lid 3.

(Embodiment 4) As shown in FIG. 6, the inner lid packing 18c has a surface 19a for contacting the heat sink 9 with a textured surface, and has a textured surface. Interface 1
9b has a textured surface with slight irregularities. The other structure is the same as that of the second or third embodiment.

The operation of the above structure will be described. The heat sink 9 is often made of metal such as aluminum,
In particular, when the alumite treatment is performed, the inner lid packing 18c and the heat radiating plate 9 are extremely close to each other, and the close contact may be maintained even after cooking rice. At this time, if the inner lid 13 is to be removed from the lid 3, it is difficult to remove it because the inner lid packing 18c is in close contact with the heat dissipation plate 9.

Here, since the contact surface 19a of the inner lid packing 18c with the heat radiating plate 9 is textured, the inner lid packing 18c does not adhere to the heat radiating plate 9 and the inner lid can be easily cooked immediately after cooking rice. 13 can be removed from the lid 3.

Also, the inner lid 13 is often made of metal such as aluminum, and the inner lid packing 18c is attached to the inner lid 1.
When it is attached to No. 3, the sliding friction between the inner lid packing 18c and the inner lid 13 is large, and it is difficult to attach the inner lid packing 18c to the outer periphery of the inner lid 13 smoothly.

Here, the inner lid packing 18c is embossed by subjecting the inner lid contact surface 19b of the inner lid packing 18c to embossing.
Sliding friction between the inner cover 13 and the inner cover 13 can be reduced, and the inner cover packing 18c can be attached along the outer periphery of the inner cover 13 smoothly.

[0047]

As described above, according to the invention described in claim 1 of the present invention, a pot having a flange portion on the upper edge, a rice cooker main body for accommodating the pot therein, and the rice cooker main body The rear hinge part is rotatably supported and includes a lid that covers the upper part of the rice cooker body so that the top part of the rice cooker can be opened and closed. The lid seals the steam port serving as a steam passage, the flange portion of the pot, and the lid. Inner lid with pan packing and heat radiating plate, which has a disc shape and has a steam port for steam passage, is detachably attached, and an inner lid packing made of an elastic material is placed between the inner lid and the heat radiating plate. Therefore, it is possible to prevent steam or sticks leaked from the gap between the outer circumference of the inner lid and the pot from flowing into the upper surface of the inner lid when the inner lid is lifted up by the steam pressure during rice cooking, which improves the spillover performance. Not only can it be improved, but also the taste can be improved. In addition, the rattling noise caused by the contact between the inner lid and the heat dissipation plate can be eliminated.

According to the second aspect of the present invention, since the inner lid packing is made of an annular elastic body and is detachably attached to the inner lid so as to cover the outer circumference of the inner lid, the inner lid packing is simple. Since it can be detached from the inner lid and the inner lid packing can be removed and washed, it is possible to improve careability.

According to the third aspect of the invention, since the inner lid packing has a slight gap between it and the heat radiating plate, a finger can be caught between the outer periphery of the inner lid and the heat radiating plate. The inner lid can be easily removed from the lid.

Further, according to the invention described in claim 4, since the inner lid packing has the textured surface abutting against the heat radiating plate, it is possible to prevent the inner lid from sticking to the heat radiating plate. The detachability of the lid can be improved.

According to the fifth aspect of the present invention, since the inner lid packing has the textured surface on the contact surface with the inner lid, the inner lid packing can be easily attached to the inner lid.

[Brief description of drawings]

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

FIG. 2 is an enlarged cross-sectional view of the main part of the rice cooker.

FIG. 3 is a perspective view of an inner lid packing of a rice cooker according to a second embodiment of the present invention.

FIG. 4 is a sectional view of the main part of the rice cooker.

FIG. 5 is a sectional view of the essential parts of the rice cooker according to the third embodiment of the present invention.

FIG. 6 is a cross-sectional view of essential parts of a rice cooker according to a fourth embodiment of the present invention.

FIG. 7 is a sectional view of a conventional rice cooker.

[Explanation of symbols]

1 rice cooker body 2 pots 2a Flange part 3 lid 4 Hinge part 8 steam port 9 Heat sink 13 Inner lid 13c Inner lid steam port 14 Pan packing 18 Inner lid packing

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Akihiro Shinabe             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 4B055 AA03 BA53 CA09 CA24 CA70                       CA90

Claims (5)

[Claims] 1. A pot having a flange portion on its upper edge, a rice cooker body for accommodating the pot therein, and a hinge portion at the rear of the rice cooker body, which is rotatably supported by an upper portion of the rice cooker body. A lid for opening and closing is provided, and the lid includes a steam port serving as a steam passage, a flange portion of the pot, a pot packing for sealing the lid, and a heat radiating plate. The rice cooker has an inner lid that has a steam port and is detachably attached, and an inner lid packing made of an elastic material is arranged between the inner lid and the heat dissipation plate. 2. The rice cooker according to claim 1, wherein the inner lid packing is made of an annular elastic body and is detachably attached to the inner lid so as to cover the outer periphery of the inner lid. 3. The rice cooker according to claim 1, wherein the inner lid packing has a slight gap between the inner lid packing and the heat dissipation plate. 4. The rice cooker according to claim 2, wherein the inner lid packing has a textured surface on its contact surface with the heat dissipation plate. 5. The rice cooker according to claim 2, wherein the inner lid packing has a textured surface on the contact surface with the inner lid.