JPS63292916A - Rice cooker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a rice cooker equipped with a double-layered lid.

BACKGROUND ART In general, boiling over rice during cooking is a problem in rice cookers, and various ideas have been devised as a countermeasure for this problem. For example, as shown in FIG. 3, an upward protrusion 22 is provided at the center of the inner lid 21, a steam hole 23 is formed in this protrusion 22, and the steam hole 23 is formed in an annular lower portion 24 on the outer periphery. A steam hole 25 with a smaller diameter is provided, and the rice cooking liquid etc. blown up from the steam hole 23 onto the inner lid 21 during rice cooking is removed from the steam hole 25 to the pot 26.
A structure has been proposed to return it to the inside of the Friend.

Problems to be Solved by the Invention According to various data regarding boiling over that occurs when cooking rice with a rice cooker, boiling over occurs when there is more water in the pot than is required for cooking rice, or when the steam pressure inside the pot becomes particularly high. It is said that if the bubbles generated along with the steam block the steam vents, the bubbles will not disappear and will continue to occur, causing splashes and boiling over.

Therefore, a structure as shown in FIG. 3 was proposed, in which a steam hole 23 is provided in the protruding portion 22Vc at a high place, and the generated bubbles are allowed to flow through the steam hole 25 in the bottom portion 24 to the inside of the pot 26. However, the protruding part 22 is flat, and the bubbles blown up from the steam vent 23 are once returned to the protruding part 22.
As a result, the steam vent 23 is temporarily blocked, and the bubbles cannot be blown up, making it difficult for the cooled bubbles to disappear. .

The present invention solves the above-mentioned problems, and aims to provide a rice cooker that does not cause splashing or boiling over of bubbles during rice cooking.

Means for Solving the Problems In order to solve the above problems, the rice cooker of the present invention includes a rice cooker main body, a pot stored inside the rice cooker main body, and an upper opening of the rice cooker main body that can be opened and closed. An outer cover that can be freely covered, an inner cover that covers an upper opening of the inside, and a holder shaft that protrudes downward from the lower surface side of the outer cover and holds the inner cover via a holder, The holder attachment is provided with a ventilation hole leading from the lower end through the center to the side surface above the position area, and the inner lid attachment of the holder shown in @ is provided with a ventilation hole on the side surface above the position.

Effect With the above configuration, steam and bubbles generated during rice cooking pass from the pot through the ventilation hole in the holder shaft, and blow up from the nine ventilation holes installed in the holder. Since it is provided above the mounting part, it is located at a relatively high position and on the side, so that bubbles do not block the vent and turn into moisture and flow down to the lower part of the periphery of the inner lid. This prevents splashing and boiling over caused by bubbles and the like.

Example Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a top longitudinal cross-sectional view of a rice cooker according to an embodiment of the present invention, and FIG. 2 is a longitudinal cross-sectional view of a main part of the rice cooker. In Figures 1 and 2, inside the cylindrical rice cooker main body l,
Similarly, a cylindrical pot 2 is removably housed, and this pot 2 has an opening step 3 at the upper end. A hinge part 4 is provided on one side of the upper end of the rice cooker main body l, and a hook receiver part 5 is provided at a position facing the hinge part 4. The outer M6 is rotatably supported on the hinge part 4 on its negative side, covers the upper opening of the rice cooker main body 1 in an openable and closable manner, and has a hook 7 on the opposite side to the supported side. is attached, and this hook 7 can be freely engaged with and detached from the hook receiver part 5 of the rice cooker main body 1. A holder shaft 8 is attached to protrude downward near the center of the lower surface 6a of the outer cover 6, and an inner cover 9 of this holder shaft 81C is detachably attached via a holder 10, and this inner cover 9 is attached to the outer cover. 6 opens and closes the upper opening of the inner 2. That is, the inner cover 9 is formed on the outer circumferential surface of the central bottom 10a of the inner cover 9 in a deep dish-shaped holder 10 made of a flexible material such as rubber, and nine circumferential grooves 10b and vc are formed in the center of the inner cover 9 for mounting. It is attached by fitting the holes 9a, and in this state, the inner cover 9 is fabricated, and the holder 10 is formed in the center of the central bottom portion 10a of the holder 10.
0c to the shaft portion 8a of the holder shaft 8, the large diameter portion 8b at the lower end of the holder shaft 8 and the outer cover 6
It is installed between the bottom surface 6a of the and the holder 10
urges the inner cover 9 away from the outer cover 6, and the hook 7
When the hook receiver part 5 is in the engaged state, the peripheral edge part 9b of the inner M9 is pressed against the opening step part 3 of the inner part 2, and a close state is achieved.

The holder shaft 8 is provided with a ventilation hole 11 that opens from the lower end surface of the lower large-diameter portion 8b to the center of the shaft portion 8b and opens on the side surface above the position where the holder 10 is attached to the shaft portion 8a. ing. In addition, the inner lid 9 forms a mounting hole 9a for attaching to the holder IO, and the inner lid 9 covers the pot 2 near the center of the container.
A protrusion 9C is formed to protrude upward, and an annular lower part 9d is formed between the protrusion 9c and the peripheral edge 9b.
A hole 12 of smaller diameter is provided. Further, the holder 10 is provided with a vent 13 such as a hole or a notch in a side surface 10d above the inner cover 9, which is fitted into the circumferential groove 10b of the central bottom 10a.

In the above rice cooker, when rice is cooked, as the internal pressure of the pot 2 rises, steam and bubbles blow up from the vent 11 of the holder shaft 8 and flow to the top surface of the inner lid 9 through the vent 13 of the holder 10. . At this time, the steam including bubbles is blown up from the hole 12 provided in the annular lower part 9d of the inner cover 9, but since the diameters of the vent hole 11 and the vent hole 13 are larger than the hole diameter of the hole 12, the steam containing bubbles is mainly blown up from the vent hole 11 and the vent hole 13. It will blow up from the vent 13. The holder 101C is provided.The vent 13 is installed at a relatively higher location than the inner cover 9 and is provided on the side of the holder 10. The bubbles blown up from the vent 13 do not accumulate near the outlet of the vent 13,
That is, the water flows down to the upper surface of the annular lower part 9d of the inner cover 9 without blocking the vent hole 13, and eventually disappears. This water that disappears and flows back into the pot 2 through the holes 12 in the annular lower part 9d, but since the internal pressure of the pot 2 is relatively high during rice cooking, the amount of water that flows back is small. When the internal pressure of the pot 2 drops after cooking, rice naturally flows back into the pot 2. The size of the annular bottom portion 9d of the inner lid 9, where moisture from the blown-up bubbles accumulates, is determined by design depending on the amount of blown-up bubbles, and since the holder 10 is provided with the vent 13, the inner lid 9 It is possible to design the vent hole 13 almost to the limit where moisture accumulated on the upper surface of the vent hole 13 is blocked, and it is easy to provide a sufficient volume.

Effects of the Invention As described above, according to the rice cooker of the present invention, the X air and bubbles generated during rice cooking are removed from the ventilation hole of the holder to the upper surface of the inner lid through the ventilation hole provided on the holder shaft of the outer lid. The bubbles can be collected and extinguished on the upper surface of the annular lower part of the inner lid, and splashes and boiling over can be reliably prevented.

[Brief explanation of drawings]

FIG. 1 is a top longitudinal sectional view of a rice cooker according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of a main part of the rice cooker, and FIG. 3 is a top longitudinal sectional view of a conventional rice cooker. L... Rice cooker body, 2... Pot, 6... Outer lid, 8.
...Holder shaft, 9...Inner lid, lO...Holder,
11...Vent hole, 13...Vent hole. Agent Yoshihiro MorimotoFigure 2

Claims (1)

[Claims] 1. A rice cooker main body, a pot stored inside the rice cooker main body, an outer lid that covers the top opening of the rice cooker main body so as to be openable and closable, an inner lid that covers the top opening of the pot, and the outer lid. a holder shaft that protrudes downward from the lower surface side of the lid and holds the inner lid via a holder; the holder shaft is provided with a ventilation hole that leads from the lower end through the center to the side surface above the holder mounting position; and A rice cooker in which a ventilation hole is provided on the side surface above the inner lid attachment position of the holder.