JPS5841865Y2 - boiler - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a boiler equipped with an outer lid that opens and closes an opening of a main body case and an inner lid that opens and closes an opening of a pot installed inside the main body case.

In this type of boiler, such as a rice cooker, the inner lid is cooled from its upper side during cooking and steaming, so water vapor condenses on the lower surface of the inner lid, and this condensation causes the cooked rice to cool down. There is a problem with dripping on top.

For this reason, in the past, a heater was provided to heat the inner lid to prevent condensation.

However, this configuration not only requires a heater and its wiring components, which increases the cost, but also requires wiring work, which makes assembly difficult.

Therefore, the purpose of this invention is to effectively prevent condensation from forming on the underside of the inner lid with an extremely simple configuration.
It is not necessary to use a heater for heating the inner lid, and it is possible to significantly reduce the heat and improve the ease of assembly.It also eliminates the possibility of water remaining in the space between the outer lid and the inner lid, which reduces the occurrence of bad odors. To provide a boiler that exhibits effects such as not causing any inconvenience.

An embodiment in which the present invention is applied to a rice cooker will be described below based on the drawings.

Reference numeral 1 denotes a main body case, which has a structure in which an inner case 3 is installed inside an outer case 2, and a flange portion 3a is integrally formed on the outer periphery of the opening at the upper end of the inner case 3. An annular heater 4 is disposed at the inner bottom of the housing.

Reference numeral 5 designates a pot that is detachably housed within the inner case 3, and this includes a flange portion 5a integrally formed on the outer periphery of the opening.
is housed in the inner case 3 by placing it on the flange portion 3a of the inner case 3.

Reference numeral 6 denotes an outer lid, and a handle 7 is attached to the outer surface of the outer lid.The extending end 7a of the handle 7 is pivotally supported on the main body case 1 via a pin 8, so that the outer lid 6 can be opened. It is rotatably provided in the main body case 1 to close the opening thereof.

Reference numerals 9 and 9 denote a connecting body projecting downward from the outer cover 6 so as to vertically penetrate the outer cover 6. This is formed in a cylindrical shape with a steam passage 9a inside, and a diameter is provided at the lower part thereof. Small section 9b
By forming this, a flange 9C is formed at the lowermost end to prevent the inner lid from coming off, which will be described later.

Reference numeral 10 has a loose insertion hole 11 in a portion facing the connecting bodies 9, 9.
11 is formed as an inner lid, which is loosely inserted in advance around the outer periphery of the small diameter portion 9b of the connecting body 9 through the loose insertion hole 11, and is connected and supported to the outer lid 6 via the connecting body 9. As a result, a space 12 is formed between the outer cover 6 and the inner cover 10.

In this case, the inner lid 10 can be moved up and down by the vertical width of the small diameter portion 9b, and the inner lid 10 can be moved vertically by the vertical width of the small diameter portion 9b, and is in a state where the opening of the main body case 1 is closed by the outer lid 6 (the state shown in FIG. 1). ), the inner lid 10 has its peripheral edge placed on the flange 5a of the pot 5 to close the opening of the iron pot 5, while the outer lid 6 closes the opening of the main body case 1. In the open state (the state shown in FIG. 2), the inner lid 10 follows this and opens the opening of the pot 5, and also moves downward relative to the connecting body 9 to open the opening of the pot 5. It is prevented from coming off by the collar 9C.

That is, in response to the closing and opening of the outer cover 6, the inner cover 10 moves up and down relative to the connecting body 9, and accordingly, the space 12
The vertical width of will change.

The inner lid 10 has a large number of ventilation holes 13 each having a substantially short cylindrical water-blocking wall 13a formed by upward burring.
is formed.

Reference numeral 14 denotes an annular sealing member made of, for example, rubber and having an abbreviated cross-sectional shape, the lower end peripheral edge of which is the base is fixed to the peripheral edge of the inner lid 10 by caulking or the like, and is attached to the space 12. It is set up to surround the

Thus, when the outer lid 6 is closed, the upper end peripheral edge of the seal member 14 is in airtight pressure contact with the lower surface of the outer lid 6,
This airtightly seals the space 12, and when the outer lid 6 is opened, the movement of the inner lid 10 as described above releases the pressure contact of the upper end peripheral edge against the lower surface of the outer box 6, thereby releasing the seal. The configuration is as follows.

In addition, 15 is a through hole provided in the connecting body 9 so as to communicate the internal steam passage 9a and the space 12, and 16 is a through hole that faces the extending end 7a of the handle 7 in the main body case 1 from below. It is a soup receptor attached to the body part.

According to the above configuration, in the state shown in FIG. 1, the steam generated from the pot 5 fills the pot 5 during rice cooking and the so-called sloping period after rice cooking is completed, and then flows through the steam passage 9a of the connecting body 9. On the other hand, it fills the space 12 through the ventilation hole 13 and then flows out through the through hole 15 and the steam passage 9a.

Therefore, the steam comes into contact with the upper and lower surfaces of the inner lid 10 and is sufficiently heated, so that no dew condensation occurs on the inner lid 10.

On the other hand, since the lid 6 is not heated as described above, dew condensation occurs on its lower surface, and a portion of the condensation is then dripped and stored on the upper surface of the inner lid 10.

In this case, there is a water wall 13 around the ventilation hole 13 of the inner lid 10.
a exists, the water droplets will not drip into the pan 5 through the vent hole 13.

Thereafter, when the outer lid 6 is opened as shown in FIG. 2, the sealing of the space 12 by the sealing member 14 is released, so that water droplets condensed on the lower surface of the outer lid 6 and water droplets accumulated on the upper surface of the inner lid 6 are removed. The water flows down into the soup receiver 16 as shown by the arrow.
According to this embodiment, it is possible to prevent a situation in which a large amount of water remains in the space 12 and causes a bad odor or other inconvenience. , it is possible to effectively prevent dew condensation from forming on the lower surface of the inner lid 10, and furthermore, it is possible to significantly reduce costs by not requiring a heater for heating the inner lid as in the conventional case.

Further, since there is no heater as described above, the wiring parts can be made unnecessary and there is no need to perform wiring work, which improves the ease of assembly and reduces costs from this point of view as well.

In the above embodiment, a water barrier wall 13a is provided around the ventilation hole 13.
However, the water wall 13a may be provided as necessary, and the seal member 14 may be fixed to the outer lid 6 side.

According to the present invention, as is clear from the above explanation, the formation of dew condensation on the lower surface of the inner cover can be effectively prevented by using an extremely simple structure of simply providing a large number of through holes in the inner cover. This eliminates the need for a heater for heating the inner lid, significantly reducing costs and improving ease of assembly. It also eliminates the possibility of water remaining in the space between the outer lid and the inner lid, causing foul odors, etc. It is possible to provide a boiler that exhibits effects such as not causing any inconvenience.

[Brief explanation of the drawing]

The drawing shows one embodiment in which the present invention is applied to a rice cooker.
The figure is a longitudinal cross-sectional view showing the outer cover in a closed state, and FIG. 2 is a longitudinal cross-sectional view showing the outer cover in an open state. In the figure, 1 is the main case, 5 is the pot, 6 is the outer lid, 10 is the inner lid, 12 is the space, 13 is the ventilation hole, 13a is the edge and the ice wall, 1
4 indicates a sealing member.

Claims (1)

[Scope of utility model registration request] It 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, which is integrated with the outer lid, and a space between the outer lid and the inner lid. a plurality of ventilation holes formed in the inner lid and having an upwardly facing wall and an outer lid interposed between the outer lid and the inner lid so as to surround the space; A boiling device characterized by being provided with a sealing member that airtightly seals the space when the outer lid is closed and releases the seal when the outer lid is opened.