JPS5927847Y2 - Rice cooker pressure regulator - Google Patents

Description

[Detailed description of the invention] This invention restricts the release of steam generated during rice cooking to the outside, regulates the pressure inside the rice cooker, and adjusts the moisture content.
This invention relates to a pressure regulating device for a rice cooker that allows you to cook delicious rice.

This type of pressure-regulated rice cooker is mainly an electric heater type, and the lid of the rice cooker housed in the container body is
The closed container lid is pressed against the rice bowl, thereby sealing the rice bowl, and then steam is released under certain limits to adjust the moisture content and some pressure.

However, in the past, since the rice cooker was not tightly sealed, precise pressure regulation could not be achieved, and the effect of pressure regulation was weak and uneven.

Further, if the pressure inside the rice bowl is set only by the size of the hole through which steam escapes to the outside, it is difficult to adjust it, and the function of restricting the outflow of steam due to steam release is also poor.

This idea closes the first steam vent inside the rice cooker in the steam release passage with a valve body and prevents it from opening until the pressure inside the rice cooker exceeds the set pressure, ensuring that the internal pressure inside the rice cooker is sufficient at the beginning of cooking. It is an object of the present invention to provide a pressure regulating device for a rice cooker that can regulate the pressure and further improve the outflow restriction function of oneba.

To explain the embodiment shown in FIGS. 1 and 2, 1 is a container body, 2 is a lid of the container, 3 is a rice bowl accommodated in the container 1, and 4 is a lid of the rice bowl.

The container lid 2 is pivotally attached to the container shoulder on one side so that it can be opened and closed, and has a lock lever on the other side that engages with a locking portion of the container shoulder and is locked in the closed state. The rice bowl cover 4 is crimped onto the rice bowl in the closed state.

The rice bowl lid 4 has a steam release passage 6 in a part of its periphery that faces the outside through the through hole 5 of the rice bowl lid 2 and communicates the inside of the rice bowl 3 with the outside.
is provided.

The passage 6 includes a steam cylinder 7 in which a small diameter part 7C is connected to a large diameter part 7a with an open lower end via a shoulder part 7b, and a cap that is removably attached by screwing 8 to the outer periphery of the lower end of the large diameter part 7a. 9, and the shoulder portion 7b is riveted 10 to the rice bowl lid 4 with the small diameter portion 7C inserted into the through hole of the rice bowl lid 4 from below.

At several places on the circumference of the large diameter portion 7a, which is the peripheral wall of the portion of the passage 6 facing into the rice bowl 3, there are first steam vents 11 through which the steam inside the rice bowl 3 passes first when it is released through the passage 6. In addition, in the peripheral wall of the small diameter portion 70, which is the part of the passage 6 on the rice bowl lid 4 facing the outside, there are provided second steam vents 12 through which the steam inside the rice bowl 3 is finally discharged from the passage 6 to the outside. A large-diameter chamber formed under the rice bowl lid 4 of the passage 6 is used as a oneba reservoir chamber 13, and a oneba return hole 14 is formed in the center of the bottom of the cap 9.

The oneba return hole 14 is the oneba reservoir chamber 1 for the steam inside the rice bowl 3.
It is formed to be elongated so as to suppress the inflow into the rice bowl 3 and give priority to the return of the steam from the rice bowl 3 to the rice bowl 3.

An annular valve body 15 is provided in the oneba reservoir chamber 13 to close the first steam vent 11 while the pressure inside the rice cooker 3 is below a set pressure, and to open when the pressure in the rice cooker 3 is above the set pressure.

The valve body 15 is an annular body made of a heat-resistant elastic material such as silicone rubber and is provided along the inner surface of the large diameter portion 7a. Notches 17 are made at equal intervals on the circumference to form a tongue-shaped valve 15a, and when the pressure inside the rice bowl 3 is higher than the set pressure, the tongue-shaped valve 15a
resists its own elasticity and opens as shown in phantom lines in FIG. 1, allowing steam to escape through the passageway 6.

Therefore, until the set pressure is reached, the rice cooker 3 is in a closed state with the passage 6 closed, and the pressure is reliably increased and the pressure is regulated to a sufficient level.

In addition, the first steam vent 11 is opened small enough to release steam under certain restrictions that are advantageous for maintaining a constant pressure inside the rice cooker 3, and the frequency of opening and closing after the valve body 15 is once closed is extremely small. In addition, since the tongue-like piece 15a receives the internal pressure of the rice cooker 3 through the small first steam vent 11, it can cope with a large set pressure with a small elastic closing force, thereby reducing the fatigue of the valve body 15. , effective for miniaturization and simplification.

Furthermore, the steam that is about to be released to the outside is
Since the steam vent 11 must be passed through while pushing open the tongue valve 15a, considerable passage resistance is encountered;
The accompanying steam can be efficiently separated and left in the rice bowl 3, and the steam entering the steam storage chamber 13 flows sideways through the first steam vent 11 in the peripheral wall of the chamber 13 and communicates with the outside. The upper small diameter portion 7C where the second steam vent 12 is located is obstructed by the tongue valve 15a and the shoulder portion 7b, and the direction is 9C.
The steam that can flow only by changing the angle of 0° is collided with each part up to the small diameter part 7C, and the steam enters the wide Oneva reservoir chamber 13 from the small first steam hole 11 and is diffused, thereby reducing the Oneva accompanying force. By attenuating all at once, the still accompanying Oneva is further separated and remains in the chamber 13.

The second steam vent 12 faces the inner circumferential surface of the through hole 5 and causes the blown steam to collide and disperse, so that the user will not feel hot due to the concentrated release of steam. Even if the emitted steam is accompanied by oneba, it is separated here and allowed to flow down along the inner surface of the through hole 5, so as not to pollute the outside.

If it is desired to replace the valve body 15 with a new one or one with a different closing force, or to clean the inside of the passage 6, this can be easily done by removing the cap 9.

A backing 18 is attached to the outer periphery of the rice bowl lid 4 to be press-fitted to the mouth rim 3a of the rice bowl 3, thereby further improving the airtightness within the rice bowl 3 and further improving the pressure regulation function.

Reference numeral 19 denotes a backing that prevents the flow from spreading on the rice cooker lid 4.

In the valve shown in FIGS. 3 and 4, a first steam vent 11 is provided on the outer periphery of an annular valve body 21 made of an elastic body with a U-shaped cross section.
A protruding valve 21 a that closes the valve body 21 is integrally formed with the valve body 21 a.
The inner circumferential edge 21b of the passage 6 is clamped to the shoulder portion 7b by a fastening ring 23 that is screwed 22 onto the inner circumference of the lower end of the small diameter portion 7C.

The operation is similar to that of the previous embodiment.

Reference numeral 24 denotes a through hole opened at the bottom of the U-shaped cross section of the valve body 21, through which steam and steam entering the valve body 21 are sent to the bottom of the valve body 21.

5 and 6, the other end of a spring 32 with a valve body 31 attached to one end is held by a radial arm 33a on the outer periphery of a valve body support ring 33, and Periphery 33 b
The fastening ring 3 is screwed 34 into the inner periphery of the lower end of the small diameter portion 7C of the passage 6.
5 to the shoulder portion 7b.

In this case as well, the same effect as in the first embodiment is achieved.

In addition, the backing 18 attached to the outer periphery of the rice bowl lid 4 is pressed against the rim 3a of the rice bowl 3 by the back surface of the rice bowl lid 2, so that the inside of the rice bowl 3 is more securely sealed. Also, for this purpose, the oneba return hole in the cap 9 is eliminated.

2a is a backing pressing portion of the container lid 2, and 18a is a pressed portion of the backing 18.

In short, this idea means that the steam inside the rice bowl in the steam release passage is the first
A valve body in the steam release passage closes the first steam vent, which is provided in the peripheral wall of the protrusion on the rice bowl side so as to pass through the rice bowl while the pressure inside the rice bowl is below the set pressure, to ensure that the pressure inside the rice bowl increases. In addition, it effectively prevents the steam from blowing out, and other structures such as the specific structure of the steam release passage can be modified in various ways.

According to this invention, the first steam vent, which is formed in the partial circumferential wall of the steam discharge passage that communicates the inside and outside of the rice bowl, and which protrudes toward the rice bowl, is connected to the inside of the rice bowl by the valve body provided in the steam discharge passage. The device is designed to close until the set pressure is reached, and the steam in the rice cooker opens and closes the hole through which it passes, so the pressure rises due to the sealing inside the rice cooker as the valve body opens and closes, and the steam is released when the seal is released. Steam release through the passage is ensured, sufficient pressure is strictly regulated, and rice can always be cooked satisfactorily.

In addition, since the small steam vent is opened and closed by the valve body, the pressure inside the rice cooker that acts on the valve body is reduced accordingly, making it possible to obtain a sufficient set pressure with a small closing force, and the steam is released through the steam release passage. The steam in the rice bowl passes through the first small steam vent while pushing open the valve body and enters the steam release passage. Due to the passage resistance, the accompanying steam can be easily separated and left in the rice bowl. In order for the steam to flow sideways into the steam discharge passage and be discharged to the outside, the direction must be changed by 90 degrees. By entering the wide steam discharge passage from the steam vent and destroying the accompanying force of Oneva all at once, it is possible to separate the small amount of Oneva that is still accompanying it and leave it at the bottom of the steam discharge passage. Therefore, the function of preventing Oneva from blowing out to the outside is also improved.

[Brief explanation of drawings]

Fig. 1 is a partial sectional view of one embodiment, Fig. 2 is a perspective view of the valve body, Fig. 3 is a partial sectional view of another embodiment, and Fig. 4 is a perspective view of a part of the valve body. FIG. 5 is a partial sectional view of another embodiment, and FIG. 6 is a partial oblique view of the valve body. 3...Rice bowl, 4...Rice bowl lid, 6...
...Steam release passage, 7...Steam cylinder, 7a...
...Large diameter part, 7b...Shoulder part, 7C...
...Small diameter part, 8...Screwing, 9...Cap, 11...First steam vent, 12...
・Second steam vent, 13... Oneva reservoir chamber, 14
...Oneba return hole, 15, 21.31...
... Valve body, 32... Spring.

Claims (7)

[Scope of utility model registration request] (1) The rice bowl lid is provided with a steam release passage that passes through the rice bowl lid and communicates the inside and outside of the rice bowl, and the peripheral wall of the portion of the passage that projects toward the rice bowl directs the steam inside the rice bowl to the steam discharge passage. A first steam vent for allowing steam to flow in is provided, and a second steam vent for releasing steam to the outside is provided in a portion of the steam release passage that protrudes above the rice cooker lid, and the first steam vent is connected to the rice cooker lid. A pressure regulating device for a rice cooker, characterized in that a valve body that opens only when the internal pressure is higher than a set pressure is provided in a steam release passage. (2) The pressure regulation of the rice cooker according to claim 1, wherein the protruding portion of the steam release passage toward the rice cooker side where the first steam vent is provided is a oneva reservoir chamber with an enlarged diameter. Device. (3) A long and narrow Oneva return hole is provided at the center of the bottom of the Neova reservoir chamber to suppress the flow of steam inside the rice bowl into the Oneva reservoir chamber and prioritize the return of Oneva by flowing down from the Oneva reservoir chamber into the rice bowl. A pressure regulating device for a rice cooker according to claim 2 of the utility model registration claim. (4) The steam release passage consists of a steam cylinder whose lower end is open and which projects downward from the rice cooker lid, and a cap attached to the open lower end of the steam cylinder. A pressure regulating device for a rice cooker according to any one of the above. (5) The pressure regulating device for a rice cooker according to claim 4, wherein the cap is detachably attached. (6) The pressure regulating device for a rice cooker according to any one of claims 1 to 5, wherein the valve body has a closing habit due to its own elasticity. (7) The pressure regulating device for a rice cooker according to any one of claims 1 to 5, wherein the valve body is given a closing habit by being biased by a spring.