JPH06209850A - rice cooker - Google Patents

Abstract

(57) [Abstract] [Purpose] The purpose of the rice cooker, which has a double-structured lid including an inner lid and an outer lid, is to prevent spillage. [Structure] A pan 7, an inner lid 1 placed on an opening step of the pan 7 to cover the opening of the pan, and an outer lid 2 for covering the inner lid 1 are provided, and a central portion of the outer lid 2 is provided. A vapor discharge port 6 is provided at a position as far as possible from the inner cover 1 and the inner lid 1 has a convex portion 3 projecting upward in the center thereof, and a concave portion 4 is formed around the convex portion 3, and the convex portion 3 is formed. 3 and a rice cooker provided with a steam hole 5 above a common slope forming the recess 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker having a double-structured lid including an inner lid and an outer lid.

[0002]

2. Description of the Related Art Generally, it is known that in a rice cooker, when rice and water in an inner pot are heated during rice cooking, starch of rice is eluted into water and is generated as oneeva together with steam after boiling. However, various ideas have been made in order to prevent so-called spillage, in which this oneva is discharged outside the body.

For example, a rice cooker as shown in FIG. 7 was used as a basic idea. A convex portion 14 is provided in the center of the inner lid 9, a steam hole 15 mainly formed in the convex portion 14 is formed, and a steam hole 17 having a smaller diameter than the steam hole 15 is formed in the outer peripheral lower portion 16.
There has been proposed a structure in which onee and the like blown up from the steam holes 15 onto the inner lid 9 are returned to the inside of the pan 11 from the steam holes 17 during cooking.

[0004]

According to various data on spillage, spillage occurs when more water than necessary for cooking rice is in the pot, or when the steam pressure in the pot becomes particularly large. In addition to this, when bubbles or the like generated together with the steam block the steam holes, the bubbles do not disappear and are continuously generated, and it is said that the bubbles are caused by splashes and spills.

Therefore, the conventional structure shown in FIG. 7 has been proposed. In FIG. 7, a steam hole 5 mainly provided in the central convex portion 3 of the inner lid 1 is provided, and bubbles generated in the pan 7 are flown through the steam hole 5 to the outer peripheral lower portion 10, and the outer peripheral lower portion 1
Pan 7 from steam hole 11 with a smaller diameter than steam hole 5
It has a structure to put it back inside.

However, in the above-mentioned conventional configuration, with the recent improvement in the performance of rice cookers, especially the increase in heat power (electric power),
The amount of bubbles blown up from the main steam holes 5 is larger than the amount of bubbles returning to the inside of the pan 7 from the small-diameter steam holes 11 and is temporarily accumulated on the upper surface of the inner lid 1, and as a result, the steam discharged from the outer lid 2 is discharged. There was a problem that bubbles would become oneva and blow out from the outlet 6 to the outside of the rice cooker.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a rice cooker without spillage.

[0008]

In order to achieve this object, a rice cooker of the present invention comprises a pot, an inner lid placed on the opening step of the pot and covering the opening of the pot, and the inner lid. An outer lid covering the outer lid, and a steam discharge port is provided at a position as far as possible from the central portion of the outer lid, and the inner lid has a convex portion projecting upward in the central portion, and also around the convex portion. It has a configuration in which a concave portion is formed and a steam hole mainly provided above a common slope forming the convex portion and the concave portion.

[0009]

With this configuration, steam, bubbles, etc., generated during cooking are blown up from the main steam hole provided in the inner lid, but liquid-like liquid is formed in the inner lid recess away from the steam outlet of the outer lid. It will be accumulated as oneeva and can prevent spillage.

[0010]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is an inner lid, 2 is an outer lid, 3 is a convex portion provided in a central portion of the inner lid, 4 is a peripheral portion of the convex portion 3, and a center line 13 and an outer periphery of the inner lid 1 are shown. A concave portion provided closer to the center line 13 than the intermediate line 12 with respect to the line 14 is a steam hole formed above a common slope 8 forming the convex portion and the concave portion, and 6 is a central portion of the outer lid 2. A steam discharge port 7 provided on the upper surface of the outer peripheral portion of the inner lid at a position as far as possible from is a pot.

Regarding the rice cooker configured as described above,
The operation will be described with reference to FIG. First, when rice is cooked in the above configuration, steam and bubbles are blown up from the steam holes 5 of the inner lid 1 as the pressure in the pan 7 increases. Since the steam holes 5 are provided on the slope 8, the bubbles do not stay near the steam holes 5 but flow into the recesses 4 and accumulate, and the bubbles disappear and become liquid oneeva. The size of the concave portion 4 in which the Oneva is accumulated is determined by design depending on the amount of bubbles blown up, and it is possible to easily provide a sufficient volume.

Needless to say, it is more effective if the concave portion 4 of the inner lid 1 and the steam outlet 7 of the outer lid are located apart from each other.

FIG. 2 is a half-mounting plan view of an inner lid showing an embodiment of the present invention, and FIG. 3 is a sectional view of the inner lid showing an embodiment of the present invention. 3, and a concave portion 4 is formed in the peripheral portion thereof, and a steam hole 5 is provided on a common slope 8 forming the convex portion 3 and the concave portion 4.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to the drawings.

In FIG. 4, 1 is an inner lid, 2 is an outer lid, 3 is a convex portion provided in the central portion of the inner lid, 4 is a peripheral portion of the convex portion 3, and a center line 13 and an outer periphery of the inner lid 1 A concave portion 5 provided closer to the center line 13 than the intermediate line 12 with the line 14 is a main steam hole formed above a common slope 8 forming the convex portion and the concave portion, and 6 is an outer lid 2. A steam discharge port provided on the upper surface of the outer peripheral portion of the inner lid at a position as far as possible from the central portion of the above, a pot 7 and a steam hole 9 having a diameter smaller than that of the main steam hole 5.

Regarding the rice cooker configured as described above,
The operation will be described with reference to FIG. First, when rice is cooked in the above configuration, steam and bubbles are blown up from the steam holes 5 of the inner lid 1 as the pressure inside the pan 7 increases. Since the vapor holes 5 are provided on the slope 8, the bubbles do not remain near the vapor holes 5 but flow into the recesses 4 and accumulate, and the bubbles disappear and become liquid oneeva. This oneva can be returned to the inside of the pan 7 through the steam holes 9 provided in the recess 4. Since the pressure in the pan 7 is relatively high during rice cooking, the amount of oneeva to be refluxed is very small.

Needless to say, it is more effective if the concave portion 4 of the inner lid 1 and the vapor discharge port 7 of the outer lid are located apart from each other.

FIG. 5 is a half-mounted plan view of an inner lid showing an embodiment of the present invention, and FIG. 6 is a sectional view of the inner lid showing an embodiment of the present invention. 3 and a concave portion 4 in the peripheral portion thereof, a steam hole 5 mainly provided on a common slope 8 forming the convex portion 3 and the concave portion 4, and a diameter smaller than that of the steam hole 5 at the lowest portion of the concave portion 4. Steam holes 9 are provided.

[0020]

As described above, according to the present invention, by providing a recess in the inner lid, oneeva can be stored in the recess, and oneeva can be recirculated into the pan through the steam holes provided in the recess. Can be prevented.

[Brief description of drawings]

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

FIG. 2 is a plan view of a semi-mounted inner lid according to an embodiment of the present invention.

FIG. 3 is a sectional view of an inner lid according to an embodiment of the present invention.

FIG. 4 is an upper sectional view of a rice cooker according to a second embodiment of the present invention.

FIG. 5 is a half mounting plan view of the inner lid in the second embodiment of the present invention.

FIG. 6 is a sectional view of an inner lid according to a second embodiment of the present invention.

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

[Explanation of symbols]

 1 Inner lid 2 Outer lid 5 Inner lid steam hole 6 Outer lid steam outlet 7 Pan

Claims (2)

[Claims] 1. A pot, an inner lid placed on an opening step of a steam pot to cover the opening of the pot, and an outer lid covering the inner lid,
A vapor discharge port is provided at a position as far as possible from the central portion of the outer lid, the inner lid has a convex portion projecting upward in the central portion, and a concave portion is formed around the convex portion, and the convex portion is formed. Rice cooker provided with steam holes above a common slope forming a portion and the recess. 2. The rice cooker according to claim 1, wherein a steam hole having a diameter smaller than that of the steam hole is provided at the bottom of the recess.