JPS5929603Y2 - boiler - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a boiler in which a steam release function is added to a connecting body that connects and supports an inner lid to an outer lid.

Traditionally, boilers such as electric rice cookers have a steam release function to release steam inside the pot to the outside of the pot during cooking, and its structure consists of an outer lid that opens and closes the opening of the main body case. and an inner lid that is connected to this outer lid via a connecting body and opens and closes the opening of the pot, each having a steam vent hole,
Alternatively, there is one in which a steam venting cylinder provided on the inner lid is passed through an insertion hole in the outer lid and exposed to the outside of the vessel.

However, in the former case, the outer lid and the open end of the pot are sealed to prevent steam leaking from the steam vent hole in the inner lid from entering between the main case and the pot and adhering to electrical equipment. In the latter case, although the gasket is not required, it is necessary to install an extra steam vent cylinder, which not only complicates the structure but also increases cost.
This method has the drawback of increasing manufacturing and assembly man-hours.

Therefore, the purpose of the present invention is not only to eliminate the need to separately provide a steam vent cylinder body and steam vent hole, but also to eliminate the need for the conventional large packing, thereby simplifying the structure, reducing the number of parts, and manufacturing. The present invention also provides a boiler that can reduce assembly man-hours.

A first embodiment in which the present invention is applied to an electric rice cooker will be described below with reference to FIGS. 1 and 2.

Reference numeral 1 denotes a main body case, which has a structure in which an inner case 4 is installed inside an outer case 2 via a heat insulating material 3, and an annular decorative piece is provided at the upper end of the outer case 2 and the upper end of the inner case 4, spanning both. Frame 5 is installed.

A heating element 6 is arranged and fixed on the inner bottom surface of the inner case 4, and has a sheathed heater 7 therein.

Reference numeral 8 denotes a pot, which is removably housed in the inner case 4 by being placed on the heating element 6, and a flange 8a is formed at the opening edge of the pot 8.

Reference numeral 9 denotes a magnetic thermoswitch which is elastically pressed against the outer bottom portion of the pot 8.

Reference numeral 10 denotes an outer cover, and a handle 11 is attached to the outer surface of the outer cover.The extending end 11a of the handle 11 is pivotally supported on the main body case 1 via a hinge pin 12, so that the outer cover 10 is provided in the main body case 1 so as to be rotatable in order to open and close the opening thereof.

Reference numeral 13 denotes an inner cover attached to the inside of the outer cover 10, and a heat insulating material 14 is enclosed between this and the outer cover 10.

Reference numeral 15 denotes a connecting body integrally extending inwardly from the center of the outer cover 10, which is formed in a cylindrical shape with a steam passage 15a inside, and is connected to the heat insulating material 14 and the inner cover 13.
A flange 16 is provided on the outer periphery of the distal end thereof to prevent the inner cover from coming off, which will be described later.

Reference numeral 17 denotes an inner lid having an insertion hole 18 formed in the center thereof, which is fitted around the outer periphery of the connecting body 15 through the insertion hole 18, and is thereby removably connected to the outer lid 10 through the connecting body 15. Supported.

Reference numeral 19 denotes a gasket fitted into the insertion hole 18 of the inner lid 17 to airtightly seal the insertion hole 18 and the connecting body 15.

20 is a spring receiver fitted around the outer periphery of the connecting body 15; 21 is a compression coil spring wound around the outer periphery of the connecting body 15 between the inner cover 13 and the inner lid 17;
As a result, the inner lid 1γ is urged toward the distal end of the connecting body 15 via the spring receiver 20.

22 is a steam cover, which has a connecting body 1 on the outer surface of the outer lid 10.
As shown in FIG. 2, the openings 22a and 22a are open slightly away from directly below the handle 11.

Note that 23 is an operation button for unlocking the outer cover 10 from the main body case 1.

The operation of this embodiment configured as above will be explained.

Now, in the state shown in FIG. The outer cover 10 closes the opening of the main body case 1, and 1. In addition, the inner lid 17 is pressed by the compression coil spring 21, and its peripheral edge comes into close contact with the flange 8a of the pot 8, thereby closing the opening of the pot 8.

The inside of the pot 8 is communicated with the outside air, that is, the outside of the vessel, through the steam passage 15a of the connecting body 15.

When rice cooking starts, the steam generated in the pot 8 fills the pot 8 and then escapes directly to the outside of the pot via the steam passage 15a of the connector 15 as shown by the arrow.

In this case, the steam flowing out from the upper end opening of the steam passage 15a is prevented from rising directly upward by the steam cover 22.
Once guided in the lateral direction, it flows outward through the openings 22a, 22a without contacting the handle 11.

As described above, according to this embodiment, the connecting body 15 that supports the inner lid 17 and the outer lid 10 is formed into a cylindrical shape that communicates the inside of the pot 8 with the outside of the pot (outside air) when the outer lid 10 is closed. Since the connecting body 15 has a steam venting function, there is no need to separately form a steam venting cylinder, a steam venting hole, etc., and the structure can be simplified. Since the steam inside the container is not allowed to flow out between the outer lid 10 and the inner lid 17, it will immediately flow out of the container, so a large annular gasket is used to seal the outer lid 1° and the open end of the pot 8. This can be made unnecessary, and this also makes it possible to simplify the structure and reduce the number of parts.

In addition, the inner lid 1γ needs to be removed from the connecting body 15 for cleaning etc., and then it needs to be reattached, but at this time, the connecting body 15 also serves as a steam vent, and the conventional separate steam vent hole is not used. Since there is no need to perform alignment between the steam vent holes and the steam vent cylinder, the inner cover 17 can be reattached easily.

Moreover, since the connecting body 15 is integrally provided with the outer lid 10 and the inner lid 17 is removably provided on the connecting body 15, when the inner lid 17 is removed from the outer lid 10, the connecting body 15 is attached to the outer lid 10. Since there are no protrusions such as connectors on the inner cover 17, the inner cover 17 can be easily cleaned and there is no risk of injury to hands or fingers. .

In particular, according to this embodiment, the connecting body 15 is provided approximately at the center of the outer lid 10 and the approximately center of the inner lid 17 is supported by the connecting body 15.
The directionality of the parts can be eliminated, and assembly can be made easier.

In addition, since the steam cover 22 is provided at the upper opening of the connecting body 15 so that the steam flowing out from the connecting body 15 escapes from the handle 11, the handle 11 can be prevented from becoming hot due to the steam, and rice cooking can be prevented. Even if the user grabs and holds the handle 11 inside, the danger of burns can be prevented.

Note that the support structure of the inner lid 17 by the connecting body 15 is similar to that of the connecting body 1.
5 may be formed with an elastic claw portion, and the claw portion may be inserted into the insertion hole of the inner lid 17.

3 and 4 show a second embodiment of the present invention,
The parts different from the first embodiment will be explained.

In the second embodiment, there are a plurality of connecting bodies 15, for example two, and each connecting body 15.15 is arranged in a direction parallel to the opening/closing axis of the outer lid 10, that is, the hinge pin 12, as shown by the solid line in FIG. They are installed side by side.

Note that the steam cover 22 is not provided.

By the way, if the two connecting bodies are arranged parallel to each other non-parallel to the hinge pin 12 (substantially perpendicular in this case) as shown by the two-dot chain lines in FIGS. 3 and 4, when the outer cover 10 is opened and closed, Since at least one of the two connecting bodies acts on the inner cover 17 to prevent its rotation, a problem arises in that excessive force such as twisting is applied to the inner cover 17 and the connection ratio.

However, according to the second embodiment, two connecting bodies 15
, 15 are arranged in parallel to the hinge pin 12,
The above-mentioned problems can be solved without applying excessive force to both sides.

Further, in the above embodiment, the connecting body 15 is integrally provided on the outer lid 10 by integral molding, but a separate connecting body may be fixed and integrally provided on the outer lid. It is not limited to the above embodiments,
It goes without saying that various modifications can be made without departing from the scope of the invention, such as applying it to a gas rice cooker, for example.

As explained above, in the present invention, a connecting body that removably connects and supports an inner lid to an outer lid is formed into a cylindrical shape that communicates the inside of the pot with outside air when the outer lid is closed, and is integrated with the outer lid. Since the connecting body has a steam venting function, it is not necessary to separately provide a steam venting cylinder and a steam venting hole, and the conventional large packing can be made unnecessary, thus simplifying the structure. In addition, it is possible to reduce the number of parts and the number of manufacturing and assembly steps, and the position of the separate steam vent holes and the position of the steam vent hole and the steam vent cylinder when reinstalling after removing the inner cover. It is possible to eliminate the need for alignment, and it can be easily reattached, and when the inner cover is removed and cleaned, it can be done easily and without injury to fingers, etc.
It has excellent practical effects.

[Brief explanation of the drawing]

1 and 2 show a first embodiment in which the present invention is applied to an electric rice cooker, with FIG. 1 being a longitudinal sectional side view and FIG. 2 being a plan view. 3 and 4 show a second embodiment of the present invention, FIG. 3 being a longitudinal sectional side view and FIG. 4 being a plan view. In the drawings, 1 is a main case, 8 is a pot, 10 is an outer lid, 12 is a hinge pin (opening/closing shaft), 15 and 26 are connecting bodies, 17 is an inner lid, and 22 is a steam cover.

Claims (1)

[Scope of utility model registration request] A connecting body that has an outer lid that opens and closes an opening of the main body case and an inner lid that opens and closes an opening of a pot installed inside the main body case, and that connects the inner lid to the outer lid in a removable manner. The boiler has a cylindrical shape that connects the inside of the pot with outside air when the outer lid is closed, and is integrally provided with the outer lid.