JPS6326105Y2 - - Google Patents

Description

[Detailed description of the invention] B. Field of industrial application This invention relates to a rice cooker, and in particular to a rice cooker that has a simple configuration and completely separates steam and steam generated during rice cooking.

○B Conventional technology Conventional rice cookers, for example,
As can be seen in Publication No. 24338 or Publication No. 1971-21971, a steam release valve is provided only on the outer lid, so it is possible to separate the steam from the steam to some extent, but it is not possible to separate the steam from the inner lid. If there is a large amount of steam and steam gushing out from the drilled holes, the steam inevitably flows out from the steam release valve.

○C Purpose of the invention The purpose of the present invention is to improve the inner lid in particular to completely separate the soot and steam, thereby preventing the soot from flowing out of the rice cooker.

The configuration of the present invention is such that the top opening of the pot that contains the food to be cooked is closed with an inner lid, and the top opening of the rice cooker body that stores the pot in a removable manner is closed with an outer lid,
The outer lid and inner lid form a sealed space, and the inner lid is provided with a sticky rice cooker return hole and a steam hole that connect the inside of the pot to the sealed space, and this steam hole can be opened and closed by a first opening and closing valve. The outer lid is provided with a steam guide tube that connects the sealed space to the outside, and a through hole is drilled in the steam guide tube, and the steam guide tube can be opened and closed by a second opening and closing valve.

○E Example of the invention 1 is a rice cooker main body, which includes a cylindrical outer frame 2,
a bottomed cylindrical inner frame 3; both frames 2;
3, and a heat insulating material 5 that is also housed between the frames 2 and 3.
It is composed of. Reference numeral 6 denotes a pot that is removably housed in the rice cooker main body 1, and an inner lid 7 is disposed at the top opening. Reference numeral 8 denotes an outer lid that covers the top opening of the rice cooker main body 1, and has a handle 9 on the top surface, a pivot 10 on one end, and a lever 11 on the other end.

The inner lid 7 has a protruding part 12 formed in the center and a recess 13 along the circumferential direction. A pot return hole 15 is bored through which the inside of the inner pot 6 communicates with a closed space S, which will be described later. Further, a plurality of steam holes 16 are provided in the projecting portion 12. Reference numeral 17 denotes a ring-shaped first opening/closing valve that is inserted into and engaged with the insertion hole 14, and is opened to allow steam and sticky residue generated during rice cooking to pass through the steam hole 16, and is closed when keeping the rice warm. .

The outer cover 8 is composed of a heat sink 20 and an outer frame 21, and a ring-shaped gasket 23 is attached to the cover frame cover 22 that connects the heat sink 20 and the outer frame 21, so that when the outer cover 8 is turned over, This gasket 23 is pressed against the upper peripheral edge of the pot 6 to form a sealed space S between the outer lid 8 and the inner lid 7. Furthermore, a locking pin 26 is vertically provided on the lower center surface of the heat sink 20 to engage with and disengage from the center opening 25 of the first on-off valve 17 . 27 is a spring to which a pressing plate 28 is attached. This pressing plate 28 presses the inner lid 7 so as to come into close contact with the pot 6 when the outer lid 8 is turned over. A support cylinder 29 is integrally formed by opening a part of the heat dissipating plate 20 and raising it upward.
Reference numeral 30 denotes a steam guide cylinder supported by the heat sink 20 and slightly protruding from the outer frame 21, and has holes 31 formed in its upper surface. A circulation hole 3 is provided near the support cylinder 29.
2 is formed. Reference numeral 33 denotes a second on-off valve simply placed on the upper opening of the support tube 29, which has a plurality of small-diameter through holes 34 and whose outer periphery is bent downward to form a guide portion 35.

Although rice is not shown, rice is cooked by a rice cooking heater provided at the inner bottom of the inner frame 3, and kept warm by a side heater 40 provided at the outer periphery of the inner frame 3.
This is performed by a lid heater 41 provided inside the outer lid 8.

To explain the operation of this configuration, the rice and steam generated during rice cooking push up the first on-off valve 17 from the steam hole 16 and flow into the closed space S, where the rice and steam are separated. , one side is concave part 13
The accumulated steam is circulated into the pot 6 from the sticky return hole 15, and the steam pushes up the second on-off valve 33 and floats, bypassing the second on-off valve 33 and flowing into the steam guide tube 3.
It rises along the inner wall of 0. At this time, it collides with the second on-off valve 33 and further separates the waste contained in the steam, causing only the steam to flow out from the holes 31, and the waste flows from the circulation hole 32 into the closed space. It flows back into S and is further returned into the pot 6 through the return hole 15.

The second on-off valve 33 moves up and down within the steam guide cylinder 30, but since a guide part 35 is formed around the outer periphery of the second on-off valve 33, the second on-off valve 33 moves up and down in the steam guide cylinder. The second on-off valve 33 moves extremely smoothly along the upper and lower surfaces of the inner wall of the valve 30.

In addition, since the second on-off valve 33 is provided with a small-diameter through hole 34, the second on-off valve 33 closes the upper surface opening of the support cylinder 29 during heat retention, and the closed space S is almost completely closed. Even if an attempt is made to do so, a small amount of pressure escapes from the through hole 34 to the outside, so that the inside of this closed space S does not become negative pressure. If the through hole 34 is not formed, there is a risk that the inside of the sealed space S will become completely negative pressure, making it impossible to open the outer cover 8.

○F Effect of the invention Since the invention is constructed as described above,
The steam and the onion are first separated in the steam hole with the first on-off valve, and the onion is returned into the pot through the onion return hole, and the remaining steam enters into this through the steam guide tube with the second on-off valve. The coming steam is further separated into the steam and the remaining rice cake, and only the steam is discharged to the outside, and the rice that does not go into the closed space flows back into the pot through the return hole and is completely discharged to the outside of the rice bowl. It is possible to prevent the outflow of. Furthermore, during heat retention, the pressure remaining in the sealed space escapes to the outside through the through holes, so that negative pressure does not develop in the sealed space, making it easy to open the outer lid at any time.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of the rice cooker of the present invention, and FIG. 2 is an enlarged sectional view of the main part of FIG. 1. 7...Inner cover, 8...Outer cover, 16...Steam vent, 1
7...First on-off valve, 30...Steam guide cylinder, 34...
...Second on-off valve.

Claims (1)

[Scope of utility model registration request] An airtight space is formed by an inner lid that closes the top opening of the pot and an outer lid that closes the top opening of the rice cooker main body in which the pot is removably housed, and the inner lid is configured to cover the inside of the pot. a steam return hole and a steam hole that communicate with the closed space, and a first on-off valve that opens and closes the steam hole; A rice cooker characterized in that a through hole is bored in the cylinder and a second opening/closing valve is provided for opening and closing the steam guide cylinder.