JP3437464B2 - rice cooker - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a rice cooker which is a cooking device.

[0002]

2. Description of the Related Art FIG. 10 is a sectional view showing a conventional rice cooker. In the figure, 1 is a rice cooker main body, which is composed of an outer frame 1a and a protective frame 1b. Reference numeral 2 denotes an inner pot which is housed in the main body 1 and stores rice and water. 3 is a rice cooking heater,
The inner pot 2 is placed on the rice cooking heater 3. The rice cooking heater 3 is formed by embedding a sheathed heater in a hot plate made of aluminum and is fixed to the bottom of the protective frame 1b. A thermostat 4 detects the temperature of the inner pot 2.

Reference numeral 5 denotes an opening / closing lid that covers the upper opening of the inner pot 2 so as to be openable and closable. Connected with. Reference numeral 8 denotes a steam vent valve formed on the opening / closing lid 5 for discharging steam generated during cooking rice to the outside. The inner surface of the opening / closing lid 5 is made of metal such as stainless steel. 9 is annularly provided on the inner surface of the opening / closing lid 5,
It is a seal packing that elastically contacts the upper peripheral portion of the inner pot 2 to prevent spillage when the opening / closing lid 5 is closed.

Reference numeral 10 is a lid heater for keeping heat attached inside the opening / closing lid 5, and 11 is a body heater for keeping heat attached to the protective frame 1b.

When rice is cooked, rice and an appropriate amount of water are put in the inner pot 2 and the rice heater 3 is energized to heat the inner pot 2. Steam generated during rice cooking is discharged to the outside from a steam vent valve 8 provided on the opening / closing lid 5.

[0006]

SUMMARY OF THE INVENTION In the conventional rice cooker as described above, there is a problem that the steaming valve 8 may escape with the steam from the steam vent valve 8 during cooking, so that delicious delicious rice cannot be cooked. there were. Further, although the lid heater 10 is attached to the opening / closing lid 5, since the inner surface of the opening / closing lid 5 is made of metal such as stainless steel, water droplets are attached when the temperature is kept warm, and drops are dropped when the opening / closing lid 5 is opened. Had a problem that it became sticky, and various bacteria were attached to the opening / closing lid 5.

The present invention has been made in order to solve such problems, and an object thereof is to obtain a rice cooker having an inner lid excellent in hygroscopicity and antibacterial property and capable of cooking delicious rice.

[0008]

A rice cooker according to a first aspect of the present invention is an inner pot for containing rice and water, an opening / closing lid for opening and closing the upper opening of the inner pot, and a detachable lid for the opening / closing lid. and wooden inner lid provided on, and a heating element for heating the internal pot, magnetic
The inner lid is attached to the opening / closing lid with a material .

The rice cooker according to the second aspect of the invention is an inner pot for containing rice and water, an opening / closing lid for opening and closing the upper opening of the inner pot, and an upper peripheral edge of the inner pot provided on the opening / closing lid. a ring-shaped packing elastic contact in parts, and wood of the inner lid detachably attached to said lid smaller than the diameter of the packing, and a heating element for heating the internal pot, the inner lid of a magnetic material
It is designed to be attached to the open / close lid .

[Means for Solving the Problems]

[0010]

[0011]

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. FIG. 1 is a sectional view showing a rice cooker according to a first embodiment of the present invention.
In the figure, the same parts as those in the above-mentioned conventional example are designated by the same reference numerals and the description thereof is omitted. Reference numeral 12 denotes a wooden inner lid detachably attached to the opening / closing lid 5 and made of sawara, cypress, cedar, or the like. The inner lid 12 is formed with a plurality of ventilation holes 13 penetrating the upper and lower surfaces, and the silicon sheet 1 is formed in the central portion.
An opening 14 to which 5 is attached is formed. A protrusion 16 is formed on the inner surface of the opening / closing lid 5.
The inner lid 12 is attached by fitting 6 into the opening 14 of the inner lid 12. An enlarged cross-sectional view of the mounting portion of the inner lid 12 is shown in FIG.

Since the opening / closing lid 5 is provided with the seal packing 9 and the diameter of the inner lid 12 is smaller than the diameter of the seal packing 9, rice can be cooked even when the inner lid 12 is not attached. Further, in FIG. 1, similar to the above-mentioned conventional example,
Although the rice cooker that is heated by the rice cooker heater 3 is shown, any heating method may be used, and for example, the inner lid 12 may be attached to the rice cooker of the electromagnetic induction heating system.

The steam generated during rice cooking is discharged to the outside through the vent hole 13 of the inner lid 12 and the steam vent valve 8. Here, since there is a gap between the inner lid 12 and the opening / closing lid 5, steam easily flows.

According to this rice cooker, the rice cooked during rice cooking passes through the plurality of ventilation holes 13 at high speed and enters the relatively large volume of the gap, and the speed of the rice cooked becomes slow and the steam is removed. You can cook delicious tasty rice because you don't go outside to the valve 8. Here, the ventilation hole 13 also has a role of returning the bedclothes accumulated in the gap between the inner lid 12 and the opening / closing lid 5 into the inner pot 2. Further, since the inner lid 12 made of wood has excellent hygroscopicity, it is difficult for water droplets to adhere to the inner lid 12 due to steam generated during heat retention, and the rice is less likely to become sticky. Particularly, since the ventilation hole 13 is provided, the moisture absorption is enhanced by the steam passing through the ventilation hole 13. Furthermore, if the inner lid 12 is made of cypress, it has excellent antibacterial properties and can be kept warm for a long time.

Concavities and convexities may be formed on the lower surface of the inner lid 12 as shown in FIG. 3. If formed in this way, the surface area is increased, so that hygroscopicity and antibacterial property are improved. Further, in FIG. 1, the diameter of the inner lid 12 is set to a size that allows the inner lid 12 to be mounted on the upper peripheral portion of the inner pot 2, but a smaller diameter may be used. In that case, as shown in FIG. 4, the steam generated during rice cooking is discharged from the ventilation hole 13 and the inner lid 12
It also flows out between the outer periphery of the and the inner pot 2. Even when formed in this way, similarly, water drops do not attach to the inner lid 12, and if the inner lid 12 is made of cypress, a rice cooker excellent in antibacterial properties can be obtained.

The wooden inner lid 12 can be boiled after processing to remove warpage and odor.
Moreover, you may make it attach the inner cover 12 only at the time of heat retention.

Embodiment 2. FIG. 5 is a cross-sectional view showing another example of the mounting portion of the inner lid 12. In the figure, 17 is a magnet which is a magnetic material, and 18 is a metal cover which covers the magnet 17. In this way, the inner lid 12 can be easily attached to the inner surface of the metallic opening / closing lid 5 and can be easily removed. A magnetic metal plate may be provided on the inner lid 12 and a magnetic material may be attached to the opening / closing lid 5 side.

Embodiment 3. FIG. 6 is a cross-sectional view showing another example of the mounting portion of the inner lid 12. In the third embodiment, the inner lid 12 is not attached to the opening / closing lid 5 but used by being placed on the upper peripheral portion of the inner pot 2. An elastic body 19 such as a spring or rubber is provided on the inner surface of the opening / closing lid 5 or the upper surface of the inner lid 12, and when the opening / closing lid 5 is closed, the opening / closing lid 5 pressurizes the inner lid 12 so that the inner lid 12 is It is brought into close contact with the upper peripheral portion of the kettle 2.

When the elastic body 19 is attached to the inner lid 12, the elastic body 19 can be used as a handle for the inner lid 12.

Fourth Embodiment FIG. 7 is a cross-sectional view showing still another example of the mounting portion of the inner lid 12. As shown in the figure,
In the fourth embodiment, the protrusion 16 provided on the inner surface of the opening / closing lid 5 is formed sufficiently long, and the inner lid 12 is attached so as to be vertically movable. Since the inner lid 12 made of wood floats on water, the position of the inner lid 12 moves up and down according to the amount of cooked rice.

At the time of cooking rice, water is easily convected by the inner lid 12 floating on the water surface. Further, the steam is discharged from the steam vent valve 8 provided in the opening / closing lid 5 through the ventilation hole 13 formed in the inner lid 12 and the gap between the outer periphery of the inner lid 12 and the inner pot 2.

According to this structure, the inner lid 12 prevents heat from escaping and allows uniform heating, so that more delicious rice can be cooked. Also, when keeping warm, the wooden inner lid 1
No. 2 absorbs water moderately so that the rice does not become sticky, and especially the inner cover made of cypress has excellent antibacterial properties.

Embodiment 5. Although the wooden inner lid 12 is attached to the projection 16 of the opening / closing lid 2 in the fourth embodiment, it may be a floating lid that can be directly floated on water without being attached to the opening / closing lid 2. A perspective view of the floating lid 20 is shown in FIG. The diameter of the floating lid 20 is smaller than the diameter of the inner pot 2, and as shown in the figure, a plurality of ventilation holes 21 penetrating the upper and lower surfaces and smaller than rice grains are provided. A handle 22 is provided on the upper surface.

Even when such a floating lid 20 is used, heat is unlikely to escape during heating, and more delicious rice can be cooked. Further, when the temperature is kept warm, the inner lid 12 does not absorb water properly and the rice does not become sticky. Especially, the inner lid made of cypress has excellent antibacterial properties.

Sixth Embodiment FIG. 9: is sectional drawing of the rice cooker which shows other embodiment. In this embodiment, a wooden bottom plate 23 is placed on the bottom of the rice cooker, and rice and water are put on it to cook rice.

According to this structure, the water in the bottom of the inner pot 2 is absorbed by the bottom plate 23 after the rice is cooked, and the rice is not sticky. Also, the rice does not burn. Furthermore, if the bottom plate 23 is made of cypress, it has excellent antibacterial properties.

Further, as shown in FIG. 10, even if the bottom plate 23 is placed on the projection 25 formed on the side surface of the inner pot 2 with a little distance from the bottom surface of the inner pot 2, the same effect can be obtained. Obtainable. In this case, if pores 24 smaller than rice grains are formed in the bottom plate 23, water will convection through the pores 24.

[0034]

According to the rice cooker of the first aspect of the present invention, since the inner lid made of wood is excellent in hygroscopicity, water does not become sticky due to water droplets attached to the inner lid at the time of heat retention, and the rice cooks deliciously. Along with being able to attach the inner lid with magnetic material
It is easy to put on and take off because it is open.

According to the rice cooker of the second aspect of the invention, since the inner lid made of wood has excellent hygroscopicity, the rice does not become sticky due to water droplets attached to the inner lid during heat retention, and the rice can be kept warm. since the packing is provided, Ri rice can der even without attaching the inner cover, and
The inner lid is attached with a magnetic material, so it is easy to put on and take off.
is there.

[0036]

[0037]

[0038]

[0039]

[0040]

[0041]

[0042]

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a rice cooker according to a first embodiment.

FIG. 2 is a cross-sectional view of a mounting portion of an inner lid of the rice cooker according to the first embodiment.

FIG. 3 is a cross-sectional view of the inner lid of the rice cooker according to the first embodiment.

FIG. 4 is a cross-sectional view showing the flow of steam in the rice cooker according to the first embodiment.

FIG. 5 is a cross-sectional view of a mounting portion of an inner lid of the rice cooker according to the second embodiment.

FIG. 6 is a sectional view of a mounting portion of an inner lid of a rice cooker according to a third embodiment.

FIG. 7 is a cross-sectional view of a mounting portion of an inner lid of a rice cooker according to a fourth embodiment.

FIG. 8 is a perspective view of a floating lid of a rice cooker according to a fifth embodiment.

FIG. 9 is a sectional view of a rice cooker according to a sixth embodiment.

FIG. 10 is a sectional view of a rice cooker according to a sixth embodiment.

FIG. 11 is a cross-sectional view of a conventional rice cooker.

[Explanation of reference symbols] 1 main body, 2 inner pot, 3 rice heating heater, 5 opening / closing lid, 9
Seal packing, 12 Inner lid, 13 Vent hole, 20
Floating lid, 23 bottom plate.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-7-275119 (JP, A) Actually opened 62-318 (JP, U) Actually opened 60-47416 (JP, U) Actually opened 55- 17556 (JP, U) Actual development Sho 63-36429 (JP, U) Actual public 35-15183 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47J 27/00 A47J 36 / 06

Claims (2)

(57) [Claims] 1. An inner pot for containing rice and water, an opening / closing lid for opening and closing the upper opening of the inner pot, a wooden inner lid detachably attached to the opening and closing lid, and heating the inner pot. It is equipped with a heating element that
Characteristic rice cooker. 2. An inner pot for containing rice and water, an opening / closing lid for opening and closing the upper opening of the inner pot, and a ring-shaped packing provided on the opening and closing lid and elastically contacting an upper peripheral portion of the inner pot. And a wooden inner lid detachably attached to the opening / closing lid and having a smaller diameter than the packing, and a heating element for heating the inner pot. The inner lid is attached to the opening / closing lid by a magnetic material.
Characteristic rice cooker.