WO2021229899A1

WO2021229899A1 - Rice cooker

Info

Publication number: WO2021229899A1
Application number: PCT/JP2021/008335
Authority: WO
Inventors: 椋多天野; 大介井上; 賢治森田
Original assignee: 日立グローバルライフソリューションズ株式会社
Priority date: 2020-05-15
Filing date: 2021-03-04
Publication date: 2021-11-18
Also published as: CN115605115A

Abstract

A rice cooker (1) provided with a main body (2), an inner pot (3) that is accommodated in an upper surface opening of the main body (2), an outer lid (4) for covering the upper surface opening of the main body (2), an inner lid (4a) for covering the upper surface opening of the inner pot (3), and a vapor-collecting cover (62) through which passes vapor that has escaped through a vapor hole (4b) of the inner lid (4a) and which can be attached to and detached from an outer lid vent part (61), wherein: the vapor-collecting cover (62) comprises a second extended part (62d), which is provided so as to impede flow of vapor flowing from the lower part of the vapor-collecting cover (62) upward; and a vent port (6a) through which vapor passes when vented to the outside of the main body (2) is provided above the second extended part (62d).

Description

rice cooker

The present invention relates to a rice cooker.

For example, Patent Document 1 is known as a conventional rice cooker provided with a steam recovery unit. In the abstract of this document, "the first capture chamber 11 and the second capture chamber 12 are provided in the steam flow direction of the steam passage 33 of the lid 3, and the first capture chamber 11 is provided with the lower surface of the lid ring 6 and the heat dissipation plate. A second capture chamber 12 is provided between the lid ring 6 and the steam port member 13, and the steam inlet hole 18 of the first capture chamber 11 is provided in the heat dissipation plate 9 and the second capture chamber 12. The steam inlet hole 23 of the chamber 12 is provided in the lid ring 6 which is the bottom surface 22 thereof, and the communication portion 21 communicating with the steam inlet hole 23 of the second capture chamber 12 is provided in the first capture chamber 11. The capture chamber 11 and the second capture chamber 12 are configured to overlap in a plan view. ”A steam port member that closes the second capture chamber is detachably attached to the upper surface of the lid upper member. The cooked rice cooker is disclosed.

Japanese Unexamined Patent Publication No. 2005-65523

The rice cooker of Patent Document 1 is formed of one member as a component for discharging or recovering steam during rice cooking to the outside of the main body. Therefore, the trouble of disassembling the parts at the time of maintenance is reduced. However, the route for the steam that has flowed into the lid to pass through the exhaust port and be discharged to the outside of the rice cooker is simple, and the amount of steam that is discharged to the outside of the rice cooker cannot be reduced. There was a problem that the place where the rice cooker was installed was limited.

Therefore, an object of the present invention is to provide a rice cooker capable of further reducing the amount of steam discharged to the outside of the rice cooker body.

In order to solve the above problems, the rice cooker of the present invention has a main body, an inner pot housed in the upper surface opening of the main body, an outer lid covering the upper surface opening of the main body, and an inner cover covering the upper surface opening of the inner pot. A rice cooker provided with a lid and a removable steam recovery cover for an outer lid exhaust portion through which steam passing through the steam holes of the inner lid passes, wherein the steam recovery cover is the steam recovery cover. It is provided with an extending portion provided so as to obstruct the flow of the steam flowing from the lower side to the upper side, and the exhaust port through which the steam is exhausted to the outside of the main body is above the extending portion. It is provided.

According to the rice cooker of the present invention, the amount of steam discharged to the outside of the main body can be further reduced.

It is a vertical sectional view of the rice cooker of one Embodiment of this invention. It is an enlarged view of the steam recovery part of FIG. It is a perspective sectional view of the outer lid exhaust part which constitutes the lower half of a steam recovery part. It is external perspective view of the steam recovery cover which constitutes the upper half of a steam recovery part. It is sectional drawing of the steam recovery cover of FIG. It is a bottom view of the steam recovery cover of FIG. It is sectional drawing of the modification of the steam recovery cover. It is a figure which looked at the sectional view of FIG. 7 from another angle. It is a vertical sectional view which shows the state which the outer lid of a rice cooker is closed. It is a vertical sectional view which shows the state which the outer lid of a rice cooker is open. It is an enlarged view of FIG. It is an enlarged view of the modification of FIG.

The embodiment of the rice cooker of the present invention will be described in detail with reference to the drawings. The following description shows specific examples of the present invention, and the present invention is not limited to these descriptions. Various changes and modifications can be made by those skilled in the art within the scope of the technical idea disclosed in the present specification, and it is planned from the beginning that the configuration of the following embodiment is appropriately omitted. In the following, as shown in FIG. 1, front-back, up-down, left-right are defined as shown in each figure, with reference to the line of sight of the user facing the rice cooker 1.

FIG. 1 is a vertical sectional view showing a rice cooker 1 according to an embodiment of the present invention. As shown here, the rice cooker 1 includes a main body 2, an inner pot 3, an outer lid 4, a pressure regulating mechanism 5, and a steam recovery unit 6.

In the main body 2, the inner pot 3 is detachably stored in the inner container having an open upper surface. Further, a heating coil 2a for inducing and heating the inner pot 3 is provided in the lower part of the main body 2.

The inner pot 3 is a bottomed cylindrical container housed in the main body 2, and is formed of a composite material of a magnetic metal containing a ferromagnetic metal such as iron and a non-magnetic metal so as to realize induction heating. NS. Further, the inner hook 3 has a flange portion 3a on the entire circumference of the opening edge portion.

An inner lid 4a provided with a steam hole 4b for releasing steam generated in the inner pot 3 is attached to the lower surface of the outer lid 4. By closing the outer lid 4, the upper surface opening of the inner container of the main body 2 is covered, and the upper surface opening of the inner pot 3 is closed by the inner lid 4a provided with packing on the outer periphery.

The pressure regulating mechanism 5 is a mechanism arranged between the inner lid 4a and the outer lid 4 for controlling the internal pressure of the inner pot 3, and includes a pressure regulating valve 51 and a pressure regulating valve control unit 52. The pressure regulating valve 51 includes an opening 51a communicating with the steam hole 4b of the inner lid 4a and a sphere 51b closing the opening 51a. When the internal pressure of the inner pot 3 exceeds, for example, 1.3 atm, the sphere 51b is lifted. Since the opening 51a is opened and steam escapes upward, the internal pressure of the inner pot 3 can be maintained at 1.3 atm or less. Further, when the pressure regulating valve control unit 52 does not want to increase the internal pressure of the inner pot 3, the sphere 51b is moved in advance by a solenoid to control the state of the pressure regulating valve 51 to the open state.

The steam recovery unit 6 is for recovering steam that has passed through the pressure regulating mechanism 5 and suppressing steam discharged to the outside of the rice cooker 1, and is a recess 4c formed in the rear portion of the upper surface of the outer lid 4. It is arranged so as to straddle the top and bottom of the opening 4d on the bottom surface.

FIG. 2 is a partially enlarged view showing the detailed structure of the steam passage 4e, which is a steam discharge path that has passed through the pressure regulating mechanism 5, and the steam recovery unit 6. As shown here, the steam passing through the steam hole 4b of the inner lid 4a and heading for the pressure regulating mechanism 5 from the inner pot 3 passes through the opening 51a of the pressure regulating valve 51 and then heads for the steam recovery unit 6 in the steam passage 4e. Flow into. The steam flowing into the steam passage 4e collides with the curved plate-shaped first rib 61b (other rib) formed in the outer lid exhaust portion 61 constituting the steam recovery portion 6, so that the steam is surrounded by a dotted line. are directed towards one space S _1, it flows into the vapor recovery unit 6. Steam flowing in the first space S ₁ is reflected by the top surface of the vapor recovery cover 62 constituting the vapor recovery unit 6, and the second rib 62b curved plate shape formed inside the vapor collection cover 62 (rib) in the form that passes between the first rib 61b, is guided to the second space S ₂ surrounded by a dotted line. Vapor induced in the second space S _2, after colliding with the first rib 61b and the inclined portion 61c surrounded by the first cylindrical portion 61a, travels through the second space S ₂ immediately above.

Most of the steam that has flowed into the steam recovery unit 6 through the steam passage 4e stagnates in the steam recovery unit 6 and is cooled to become condensed water. Therefore, the exhaust port 6a formed on the upper surface of the steam recovery unit 6 The amount of steam discharged from the can be reduced. Most of the condensed water is returned to the inner lid 4a through the steam passage 4e, and the rest is collected in the inclined portion 61c. With such a configuration, the user can remove the dew condensation water accumulated in the inclined portion 61c by removing the steam recovery cover 62 from the recess 4c of the outer lid 4 at the time of maintenance.

FIG. 3 is a perspective sectional view of the outer lid exhaust unit 61 constituting the steam recovery unit 6. Note that FIG. 3 shows the left half of the outer lid exhaust portion 61, and the right half also has substantially the same configuration. As shown here, the outer lid exhaust section 61 includes a first cylindrical section 61a corresponding to the lower half of the steam recovery section 6. A first rib 61b extending from the lower surface is formed on the inner front side of the first cylindrical portion 61a. As described above, the first rib 61b is a curved plate-shaped rib, and both ends thereof are in contact with the inner surface of the first cylindrical portion 61a. Further, through holes 61d penetrating in the thickness direction are provided at the left and right lower ends of the first rib 61b, so that the condensed water accumulated in the inclined portion 61c can escape downward. A packing is attached to the upper end of the first cylindrical portion 61a, and when the steam recovery cover 62 is fitted from above, the upper end of the first cylindrical portion 61a of the outer lid exhaust portion 61 and the steam recovery cover 62 are attached. The airtightness of the lower end of the second cylindrical portion 62a of the above can be maintained.

FIG. 4 is an external perspective view of the steam recovery cover 62 corresponding to the upper half of the steam recovery unit 6. As shown here, the exhaust port 6a is exposed on the upper surface of the steam recovery cover 62, and the second cylindrical portion 62a is formed on the lower surface. As shown in the figure, the exhaust port 6a has an elongated hole shape extending in the left-right direction (width direction), and is formed at the center of the left-right direction and slightly rearward in the front-rear direction.

FIG. 5 is a cross-sectional view of the steam recovery cover 62. The upper surface shape of the steam recovery cover 62 is low on the front side and high on the rear side. As shown in FIG. 1, since the upper surface shape of the outer lid 4 of the rice cooker 1 is also low in the front and high in the rear, the inclination of both is continuous in consideration of design and functionality. .. Further, the lower end of the second cylindrical portion 62a has a larger outer diameter than the other portions. This is a point where the second cylindrical portion 62a of the steam recovery cover 62 comes into contact with the upper end packing of the first cylindrical portion 61a of the outer lid exhaust portion 61 when the second cylindrical portion 62a is fitted into the recess 4c of the outer lid 4. As a result, the airtightness between the outer lid exhaust portion 61 and the steam recovery cover 62 is increased, and the steam recovery cover 62 is less likely to come off from the outer lid exhaust portion 61.

The vicinity of the exhaust port 6a has a substantially L-shaped cross-sectional shape with the front side open.
A first extending portion 62c, a second extending portion 62d (extending portion), and a support portion 62e are provided in the vicinity of the exhaust port 6a of the steam recovery cover 62. The first extending portion 62c extends downward from the upper surface inside the steam recovery cover 62. One end of the second extending portion 62d is connected to the first extending portion 62c, and the other end is connected to the supporting portion 62e, which extends in a substantially horizontal direction. The support portion 62e extends downward from the inner upper surface of the steam recovery cover 62, and in FIG. 5, the area of the support portion 62e is smaller than that of the second extension portion 62d, so that the support portion 62e of the support portion 62e Steam passes around and the steam is exhausted from the exhaust port 6a.

With these configurations, the vapor flowing upward the second space S ₂ from below so that strikes the second extension portion 62d. Therefore, the steam tends to stay in the steam recovery cover 62, and the steam is cooled. As a result, the amount of steam exhausted from the exhaust port 6a can be reduced.

Further, with these configurations, when the outer lid 4 is opened, it is possible to prevent the condensed water collected in the steam recovery unit 6 from flowing out from the exhaust port 6a. Details will be described with reference to FIGS. 9 and later.

FIG. 6 is a bottom view of the steam recovery cover 62. Since the second rib 62b of the vapor recovery cover 62 is a rib that partitions the internal space of the second cylindrical portion 62a and the first space S ₁ and the second space S _2, as shown, the left and right ends of the second rib 62b Is brought into contact with the inner surface of the second cylindrical portion 62a to realize the separation of space. Further, the second rib 62b is arranged behind the center of the second cylindrical portion 62a. In the present embodiment, it is necessary to secure a long labyrinth-like flow path in order to stagnate the steam flowing into the steam recovery unit 6 and sufficiently cool the steam. Therefore, as shown in FIG. 2, in order from the front, the first rib 61b of the outer lid exhaust unit 61, the second rib 62b of the vapor recovery cover 62, an exhaust port 6a is disposed, flows into the first space S ₁ steam reflected by the ceiling, the dew condensation water by being further cooled in the second space S _2. Therefore, the amount of steam exhausted from the exhaust port 6a can be reduced.

Further, the simple configuration of the outer lid exhaust portion 61 provided with the first rib 61b and the steam recovery cover 62 provided with the second rib 62b and the exhaust port 6a facilitates maintenance.

Further, since the area of the second extending portion 62d is larger than that of the exhaust port 6a, the exhaust port 6a cannot be seen when the steam recovery cover 62 is viewed from the bottom as shown in FIG. As a result, steam is more likely to stay in the steam recovery cover 62.

FIG. 7 is a cross-sectional view of a modified example of the steam recovery cover 62. The difference from FIG. 5 is that there is no first extending portion 62c. With this structure, so that the steam flowing through the second space S ₂ from below upward strikes the second extension portion 62d. As a result, the amount of steam exhausted from the exhaust port 6a can be reduced.
Further, although it is the same as in FIG. 5, the vertical length of the second rib 62b provided on the inner upper surface of the steam recovery cover 62 is longer than the length of the support portion 62e.

FIG. 8 is a view of the cross-sectional view of FIG. 7 viewed from another angle. The shape of the support portion 62e in FIG. 5 was rod-shaped, but the shape of the support portion 62e in FIG. 8 is a shape having an opening in the center, in other words, a combination of two rod shapes. As a result, durability can be improved even without the first extending portion 62c.

FIG. 9 is a vertical sectional view showing a state in which the outer lid 4 of the rice cooker 1 is closed. As described with reference to FIG. 2, most of the condensed water is returned to the inner lid 4a through the steam passage 4e, and the rest is collected in the inclined portion 61c. The accumulated condensed water is 80.

FIG. 10 is a vertical sectional view showing a state in which the outer lid 4 of the rice cooker 1 is opened. When the outer lid 4 is opened, the condensed water 80 accumulated at the position shown in FIG. 9 flows downward.

FIG. 11 is an enlarged view of FIG. 10. When the outer lid 4 is opened, it flows downward, and the condensed water 80 collects in the second cylindrical portion 62a of the steam recovery cover 62. Here, since the first extending portion 62c is located below the exhaust port 6a, the condensed water 80 is discharged from the exhaust port 6a to the outside of the rice cooker 1 by the first extending portion 62c. Can be prevented.

FIG. 12 is an enlarged view of a modified example of FIG. The steam recovery cover 62 of FIG. 11 is not provided with the second extending portion 62d, while the steam recovery cover 62 of FIG. 12 is provided with the second extending portion 62d. Since the second extending portion 62d becomes a wall, it is possible to further prevent the condensed water 80 from being discharged from the exhaust port 6a as compared with FIG.

In the above embodiment, the configuration in which one first rib 61b of the outer lid exhaust portion 61 and one second rib 62b of the steam recovery cover 62 are provided is exemplified, but a plurality of these ribs are provided and each of them is provided. By arranging the above in a staggered manner, the flow path from the inlet to the outlet of the steam recovery unit 6 may be further lengthened. In this case, the steam exhausted from the exhaust port 6a can be further suppressed. Further, the rice cooker may have the pressure adjusting mechanism 5 omitted.

Further, the exhaust port 6a, the first extending portion 62c, the second extending portion 62d, and the supporting portion 62e are provided behind the second rib 62b, but the present invention is not limited to this. For example, the steam recovery cover 62 not provided with the second rib 62b may be provided with an exhaust port 6a, a first extending portion 62c, a second extending portion 62d, and a supporting portion 62e. In this case as well, the second extending portion 62d can prevent the steam flowing from the lower side to the upper side in the second cylindrical portion 62a to be discharged from the exhaust port 6a. As a result, the amount of steam exhausted from the exhaust port 6a can be reduced.

1 Rice cooker 2 Main body 2a Heating coil 3 Inner pot 3a Flange 4 Outer lid

4a Inner lid

4b Steam hole 4c Recess 4d Opening 4e Steam passage 5 Pressure regulating mechanism 6 Steam recovery section 6a Exhaust port 51 Pressure regulating valve 51a Opening 51b Sphere Pressure valve control unit 61 Outer lid exhaust unit 61a First cylindrical unit 61b First rib (other ribs)
61c Inclined part 61d Through hole 62 Steam recovery cover 62a Second cylindrical part 62b Second rib (rib)
62c 1st extension part 62d 2nd extension part (extension part)
62e Support part S ₁ First space S ₂ Second space

Claims

With the main body
The inner pot stored in the upper opening of the main body and
An outer lid that covers the upper surface opening of the main body and
The inner lid that covers the upper opening of the inner pot and
The outer lid exhaust part through which steam passing through the steam holes of the inner lid passes,
A rice cooker provided with a removable steam recovery cover on the outer lid exhaust section.
The steam recovery cover includes an extending portion provided so as to obstruct the flow of the steam flowing from the lower side to the upper side of the steam recovery cover, and passes through the steam when it is exhausted to the outside of the main body. A rice cooker characterized in that an exhaust port is provided above the extending portion.
In the rice cooker according to claim 1,
The steam recovery cover has a rib on the upper surface and has a rib on the upper surface.
A rice cooker characterized in that the ribs provided on the upper surface of the steam recovery cover and the exhaust port provided on the upper surface of the steam recovery cover are arranged in order from the front of the main body.
In the rice cooker according to claim 2,
The extending portion is provided on the upper surface of the steam recovery cover via a support portion.
A rice cooker characterized in that the rib is longer than the support portion in the vertical direction.
In the rice cooker according to claim 2,
It is provided with other ribs provided on the lower surface of the outer lid exhaust portion.
A rice cooker characterized in that the other ribs, the ribs, and the exhaust port are arranged in order from the front of the main body.
In the rice cooker according to claim 4,
The other ribs have a plate shape in which the left and right ends are in contact with the inner surface of the cylindrical portion of the outer lid exhaust portion.
The rib is a rice cooker having a plate shape in which the left and right ends are in contact with the inner surface of the cylindrical portion of the steam recovery cover.
In the rice cooker according to claim 5,
The bottom surface of the cylindrical portion of the outer lid exhaust portion is provided with a slope that descends from the rear to the front of the main body.
A rice cooker characterized in that a through hole is provided below the left and right ends of the other ribs to allow condensed water to escape downward.