JP2001314317A - Steam exhausting mechanism of rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make maintenance easy and sanitary by preventing the contamination of the top surface of a cover, caused by an outflow of sticky matter from the outer-periphery side of a steam cap in all directions. SOLUTION: The steam cap 20 for exhausting the steam to the outside is detachably mounted on the cover 2, and a steam exhaust port 27 is formed in the peripheral side part 22b of the top surface of the steam cap 20 for the purpose of making the exhaust port 27 open toward a central part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a steam discharging mechanism for an electric rice cooker.

[0002]

2. Description of the Related Art Conventionally, in a steam discharging mechanism of this type of electric rice cooker, a steam discharging passage for discharging steam generated in the rice cooker main body mainly at the time of cooking rice is formed. From the steam discharge passage provided in the lid.

[0003] As an outlet structure of a steam discharge passage in the electric rice cooker having the conventional structure, as shown in FIG.
A configuration is known in which a steam discharge port 27 is formed on the upper surface of the steam cap 20 in a detachable manner.

[0004]

However, in the above configuration, the steam outlet 27 formed on the upper surface of the steam cap 20 is opened upward on the outer peripheral side. Is discharged from the steam discharge port 27, the steam including the oneva is discharged upward on the outer peripheral side, so that the lid 2
Oneva contained in the vapor is scattered around the four sides on the upper surface, and the oneva contained in the vapor flows along the outer peripheral inclined surface 20a inclined downward from the vapor discharge port 27, flows out from the upper surface of the steam cap, and is formed on the upper surface of the lid 2 and the upper surface thereof. There is a problem in that the fitting recess 2a of the steam cap 20 is soiled with oneva and the wiping operation takes time, and if this oneneba is left as it is, the hygiene is not good.

[0005] In particular, when rice is cooked at a stretch with high power, or when the amount of water is increased compared to the amount of cooked rice, the scattering of steam containing oneva increases, and the above problem is further solved. Tended to occur.

The present invention has been made in view of the above-mentioned problems, and prevents contamination of the upper surface of the lid due to generation of steam containing oneva, which flows out from the outer peripheral side of the steam cap in all directions. The purpose is to provide easy-to-care and sanitary items.

[0007]

According to a first aspect of the present invention, there is provided a steam discharging mechanism for an electric rice cooker, comprising: a rice cooker main body containing an inner pot; In a steam discharging mechanism of an electric rice cooker having a lid for opening and closing an opening and a heating means for heating an inner pot, a steam cap for discharging steam to the outside is detachably attached to the lid. A steam discharge port is formed on the peripheral side of the upper surface of the steam cap, and the steam discharge port is opened toward the center.

[0008] In such a configuration, a steam discharge port is formed on the upper surface of the steam cap on the peripheral side, and the steam discharge port is simply opened toward the center.
Due to the generation of steam containing Oneva, the Oneva contained in this steam can also be prevented from flowing out toward the center of the steam cap and flowing out from the outer periphery of the steam cap in all directions. The top surface is prevented from being stained as much as possible, and is easy to clean and sanitary.

According to a second aspect of the present invention, in the steam discharging mechanism of the electric rice cooker according to the present invention, a dome-shaped bulging portion having an upward slope from the steam discharging port is formed at the center of the upper surface of the steam cap. Features.

[0010] In such a configuration, the bulging portion having a dome-like shape having an upward slope from the steam discharge port is formed at the center of the upper surface of the steam cap, so that the oneva flowing out toward the center of the steam cap is again generated. Since the water is returned to the steam outlet through the inclined surface from above the bulging portion, the oneva can be further prevented from flowing out from the outer peripheral side of the steam cap in all directions, and the above-described operation is achieved. Is done.

According to a third aspect of the present invention, in the steam discharging mechanism of the electric rice cooker, the steam cap forms a steam discharging passage between the upper cover having a steam discharging port and the upper cover. It comprises a lower cover, and the upper cover is detachably attached to the lower cover.

In such a configuration, since the upper cover is detachably attached to the lower cover of the steam cap,
The steam cap is separated by the lower cover and the upper cover, and a steam passage formed therebetween is opened, so that the steam passage can be cleaned, and the steam cap can be cleaned together with the upper surface of the lid. It will be easy and hygienic.

According to a fourth aspect of the present invention, there is provided a steam discharging mechanism for an electric rice cooker, wherein a steam pipe forming a steam communication path is formed in a lower cover of the steam cap, and the steam pipe has a steam inlet at an upper portion. And a oneva pool portion formed at the bottom.

In such a configuration, the steam pipe formed in the lower cover of the steam cap has the steam intake port formed in the upper portion and the oneva reservoir portion formed in the bottom portion, so that the steam pipe is stored in the oneva reservoir portion on the bottom portion. Oneva is prevented from being blown off by steam from a steam intake formed above the oneba pool, so that a large amount of oneva scattered from the steam outlet can be suppressed.

According to a fifth aspect of the present invention, there is provided a steam discharging mechanism for an electric rice cooker, wherein a oneva return port is formed at the bottom of the steam pipe, and the oneva return valve is opened by the oneva's own weight at the oneva return port. It is characterized by having provided.

In such a configuration, the oneva return port is formed at the bottom of the steam pipe, and the oneva return valve opened by the weight of the oneva is provided at the oneva return port.
Oneva stored in the Oneva pool flows down by its own weight and is prevented from accumulating above the Oneva return port, thereby further preventing Oneva from flowing out.
By returning Oneva to the inner pot again, the nutrients and rice flavor contained in Oneva can be reduced.

According to a sixth aspect of the present invention, in the steam discharging mechanism of the electric rice cooker, a leg is formed on a bottom rear surface of the steam pipe, and the oneway return valve is provided above a ground position of the leg. It is characterized by that.

In such a configuration, the leg portion is formed on the bottom rear surface of the steam pipe, so that even when the steam cap is removed and placed on a table or the like, the oneva return valve provided on the steam cap is placed on the mounting surface. Is prevented from coming into contact with the device, so that sanitary handling can be performed.

Further, in the steam discharging mechanism of the electric rice cooker according to the present invention, a tubular lid knob is provided on an upper surface of the inner lid of the inner pot, and the steam cap is attached to the lid knob. Steam pipe is fitted, a steam introduction passage is formed between the lid knob and the steam pipe, and steam from this steam introduction passage is taken in from the steam intake of the steam pipe. I have.

In such a configuration, since the steam introduction passage is formed between the cover knob and the steam pipe, a member for forming the steam introduction passage is not required. It can be formed by fitting the pipe to the lid knob, the number of parts can be simplified, and by adjusting the fitting interval between the steam pipe and the lid knob, according to the interval The degree of pressure regulation can be easily adjusted, and accordingly, the steam from the steam introduction passage can be taken in from the steam intake of the steam pipe, so that the formation of the steam introduction passage becomes easy.

Further, in the steam discharging mechanism of the electric rice cooker according to the present invention, a ball receiving body in which a closing ball is installed is provided on the upper cover of the steam cap, and the ball receiving body is provided with the lower cover. A communication port of a steam communication passage formed in the steam pipe is formed, and the communication port is closed by the weight of the closing ball.

In such a configuration, the communication port of the steam communication passage formed in the steam pipe of the lower cover is formed in the ball receiver, and the communication port is closed by the weight of the closing ball. In addition, it is possible to prevent intrusion of outside air from the communication port and heat radiation of the inside air, and to improve moisture retention and heat retention.

Further objects and features of the present invention can be used alone or in various combinations in combination as far as possible.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Some preferred embodiments of the present invention will be described below with reference to FIGS.
0 to facilitate understanding of the present invention.

However, the present invention is not limited to the following embodiments, and is not intended to limit the scope of the present invention to them only, and is merely an illustrative example unless otherwise specified. .

(Embodiment 1) The present embodiment 1 is different from FIG.
As shown in FIG. 1, this electric rice cooker is, as shown in FIG.
A rice cooker main body 1 in which an inner pot 3 for rice cooking is stored, and a lid 2 that covers an upper opening of the rice cooker main body 1 so as to be openable and closable.
And

The rice cooker main body 1 has a bottom 8 which forms a bottom which is a synthetic resin bottom wall as well as an outer case 5 which forms a body which becomes an outer wall made of synthetic resin, and a synthetic resin which forms an inner peripheral wall. And a shoulder member 7 made of synthetic resin for joining the upper end of the inner container 6 and the upper end of the outer case 5 to each other. Then, a space 4 surrounded by the outer case 5, the inner container 6, and the shoulder member 7 is formed, and the inner pan 3 is housed in the inner container 6 so as to be able to be taken out.

At the center of the bottom of the inner container 6, a sensor hole 9a is formed for receiving a center sensor 9 acting as a temperature detecting means for detecting the temperature of the inner pan 3.

An annular electromagnetic induction coil (hereinafter, referred to as a rice cooking work coil) 10 surrounding the sensor hole 9a and acting as a heating means during rice cooking and heat retention.
Are provided corresponding to the bottom of the inner container 6 and the curved portion from the bottom to the side peripheral surface. The rice cooker coil 10 generates an alternating magnetic field, generates an eddy current as an induced current in the inner pot 3 by electromagnetic induction of the alternating magnetic field, and heats using the resistance heat of the eddy current. It is supposed to. The inner pot 3 is made of a material that can generate an eddy current by the work coil 10 for cooking rice.
(For example, a magnetic material).

The cooking coil 10 for cooking rice is
Between the coil die 11 fixed to the bottom surface of the inner container 6 and the bottom surface of the inner container 6.
A ferrite core (not shown) is provided so as to block the magnetism by 0 from affecting the underlying equipment.

On the other hand, the lid 2 is composed of an upper plate 16 made of synthetic resin constituting the outer surface and a lower plate 17 made of synthetic resin constituting the inner surface.
Between the upper and lower plates 16 and 17.
8 is provided with a heat insulating material 19.

The lid 2 is attached to the rice cooker main body 1 via a hinge mechanism 15 formed on one side of the shoulder member 7 so as to be rotatable and detachable.

The hinge mechanism 15 is pivotally connected to a bearing body 60 provided on the shoulder 7 at the rear of the rice cooker main body 1 via a hinge pin 62 so as to be freely rotatable. It is constituted by a connecting arm 80 to be connected.

The lid 2 is rotatably connected to the rice cooker main body 1 via a hinge mechanism 15 having the connecting arm 80, hinge pins 62, bearings 60 and the like, and is connected to the connecting arm 80 of the hinge mechanism 15. They are connected so that they can be detached. A torsion spring 40 as an elastic member is attached to the hinge pin 62. One end of the torsion spring 40 is inserted into the connection arm 80, and the other end is fixed in the bearing body 60. Then, by the urging force of the torsion spring 40, the torsion spring 40 is turned around the hinge pin 62, and the cover 2 connected to the connection arm 80 is turned in the opening direction.

On the other hand, a lock operation lever 48 is provided above the operation panel 50 provided on the shoulder 7 of the rice cooker main body 1, and the lock operation lever 48 is provided on the locking portion 42 formed at the front end of the lid 2. The locking claw 43 is locked to maintain the locked state, and the locking is released by the pivotal operation of the locking operation lever 48 by a pressing operation against the spring, and the locking operation lever 48 is connected to the connection arm 80. The lid 2 is opened by the urging force of the torsion spring 40.

At the center of the lid 2, a steam cap 20 having a steam discharge passage 22 for discharging water vapor generated during cooking rice to the outside is detachably attached. At the lower end of the steam cap 20, a lid 2
The inner lid 12 made of a good conductor (for example, aluminum alloy) for sealing the opening 3a of the inner pot 3 when the inner lid 3 is closed is attached, and a seal packing 45 provided on a peripheral edge of the inner lid 12 is provided.
Thus, the opening 3a of the inner pot 3 is sealed.

The shoulder member 7 is provided with a shoulder heater 31.
When the lid 2 is closed, the inner lid 12
Are pressed against each other, and the inner lid 25 is heated by the heat conduction from the shoulder heater 31.

The shoulder heater 31 acts as a heating means for heating the inner lid 25, and has a heater ring 3 having an inverted U-shaped cross section.
1a and a heating element 31b disposed in the heater ring 31a.

With this configuration, the heat conducted from the shoulder heater 31 and the heat radiated from the inner lid 12 during the heat retention are radiated to the surface of the rice in the inner pan 3, and The sticking is prevented by a temperature rise due to heat conduction from the shoulder heater 31.

In the present embodiment, the heating means is heated by the IH method, but the invention is not limited to this method, and the heating means may be heated by a hot plate method, a high frequency method, or the like. Further, instead of the shoulder heater 31, a heating means may be provided in the lid 2, and the inside of the inner pot 3 may be heated by this heating means.

A side part (for example, in the rice cooker main body 1)
In the space 4 in the hinge mechanism 15 side), a code reel 41 is arranged in a state of being vertically erected. In this way, it is possible to effectively use the space 4 (particularly, the space on the hinge mechanism 15 side where a large surplus space is formed) in the rice cooker main body 1, and it is necessary to increase the vertical dimension of the rice cooker main body 1. Disappears.

On the other hand, the side opposite to the hinge of the rice cooker main body 1 (ie,
In the space 4 formed by the outer case 5, the inner container 6, and the bottom body 8 of the rice cooker main body 1 on the side where the lock mechanism 48 for locking the lid 2 is provided), a work for cooking rice and keeping heat is provided. A control board 49 in which a control unit that controls the energization of the coil 10 and the shoulder heater 31 and the like is provided.

In the space 4, a power transistor and a rectifying diode bridge (not shown) for controlling the energization of the work coil 10 for cooking and keeping heat are provided.
A cooling fan (not shown) for sending cooling air to the air conditioner is provided, and an air inlet 15 is formed in the bottom body 8 of the rice cooker main body 1 so as to face the blowing fan.

Various switches (for example, a rice cooker switch, a reservation switch, a warming switch, etc.) are provided on the shoulder member 7 on the anti-hinge side (ie, the side on which the lock mechanism 48 for locking the lid 2 is provided). Further, an operation panel section 50 having a liquid crystal display section and an operation base 51 thereof are provided.

The operation panel section 50 is provided with a rice cooker switch, a reservation switch, a warming selection switch, a cancel switch, and a warming control functioning as selecting means for selecting between normal warming and low-temperature warming (hereinafter referred to as glossy warming). A heat retention off switch, a menu switch, a time switch for time adjustment, a minute switch for time adjustment, and a liquid crystal display 59 are provided.

In such a configuration, the steam cap 20 detachably attached to the lid 2 for discharging steam to the outside has a steam discharge port 27 formed in a peripheral side portion 22b on the upper surface thereof. The steam outlet 27 is connected to the center 22a.
It is open toward.

With a simple structure in which the steam discharge port 27 is opened toward the central portion 22 a, even if steam containing oneva is generated, the oneva contained in the steam is also directed toward the central portion 22 a of the steam cap 20. To prevent the water from flowing out from the outer peripheral side 22b of the steam cap in all directions, and to minimize the dirt on the upper surface of the lid 2 due to the oneva, thereby making it easier and more hygienic. .

A dome-shaped bulging portion 35 is formed in the central portion 22a of the upper surface of the steam cap 20 so as to be inclined upward from the steam discharge port 27.

By forming the bulging portion 35, the oneva flowing out toward the central portion 22a of the steam cap 20 is returned to the steam discharge port 27 again along the inclined surface from above the bulging portion. Therefore, the oneva is further prevented from flowing out from the outer peripheral side 22b of the steam cap 20 in all directions.

As shown in FIG. 5, the steam outlet 27 in the central portion 22a on the upper surface of the steam cap 20 is provided.
A concave portion 35a is formed at a more inner position, and the central portion 22a is formed.
Oneva included in the steam discharged from the steam discharge port 27 opened toward the air hole may be stored in the concave portion 35a.

The steam cap 20 has an upper cover 22 in which the steam outlet 27 is formed, and a lower cover 23 which forms a steam discharge passage 28 between the upper cover 22 and the upper cover 22.
The upper cover 22 is detachably attached to the lower cover 23 by helicoid coupling.

The lower cover 23 of the steam cap 20
Since the upper cover 22 is detachably attached to the steam cap 20, the steam cap 20 is separated by the lower cover 23 and the upper cover 22, and a steam passage formed therebetween is opened, so that the steam passage can be cleaned. Like
The steam cap 20 can be easily and sanitarily cleaned together with the upper surface of the lid 2.

The steam cap 20 forms a steam pipe 25 forming a steam communication passage 29 in the lower cover 23. The steam pipe 25 forms a steam intake port 26 in an upper part 25a and a oneva pool in a bottom part 25b. A portion 37 is formed.

The oneva stored in the oneva pool 37 at the bottom 25b of the steam pipe 25 is prevented from being blown off by steam from the steam inlet 26 formed in the upper portion 25a of the oneva pool 37. That is, a large amount of Oneva is prevented from scattering from the steam outlet 27.

An oneva return port 30 is formed in the bottom 25b of the steam pipe 25, and an oneva return valve 90 which is opened by the oneva's own weight is provided in the opening of the oneva return port 30.

This one-way return valve 90 is made of a heat-resistant elastic material such as silicon rubber, is formed of a disk-shaped flat plate, and has a rod-shaped projection 90a formed on the upper surface at the center of the bottom 25b of the steam pipe 25. Mounting hole 2 formed in
5c is elastically forcibly fitted, and in this fitted state, the oneva return port 30 is closed by its elasticity.

The oneva return valve 90 is connected to the oneva reservoir 3
The oneva stored in 7 undergoes elastic deformation due to its own weight or negative pressure in the inner pot 3, and the oneva return port 30 is opened by this elastic deformation to allow the oneva to flow down.

This prevents the oneva from accumulating above the oneva return port 30 to further prevent the oneva from flowing out, and also returns the oneva back into the inner pot 3 to remove nutrients and rice contained in the oneva. The umami can also be reduced, and in conjunction with this, the oneva return valve 90 closes the oneva return port 30 and prevents the oneva accumulated in the oneva reservoir 37 from being blown off when the inner pan 3 is pressurized. I have to.

In this configuration, as shown in FIG.
In the cooking process, the rice cooker 10 is energized for 16 seconds and then stopped for 2 seconds.
0 indicates that when the rice cooker 10 is energized (16 seconds) during the cooking step, the internal pressure in the inner pan 3 increases due to the heating from the rice cooker 10 and the pressure rises, so that the closed state is maintained. However, when the energization of the rice cooker 10 is stopped (for 2 seconds), the inside of the inner pot 3 is in a negative pressure state during that time and elastically deforms, thereby opening the oneva return port 30 and flowing down the oneva. Let it.

As described above, by using ON and OFF by the heating control of the rice cooker 10 during the rice cooking process,
When energization of the rice cooker 10 is stopped, the oneba is prevented from accumulating, and the oneba is returned to the inner pot 3 again, so that the nutrients contained in the oneba and the deliciousness of the rice can also be reduced. At the time of energization of 10, the oneva return port 30 is closed to prevent the oneva stored in the oneva reservoir 37 from being blown off.

A leg 39 is formed on the back surface of the bottom 25b of the steam pipe 25, and the one-way return valve 90 is provided above the position where the leg 39 contacts the ground.

Thus, even when the steam cap 20 is removed and placed on a table or the like, the oneva return valve 31 provided on the steam cap 20 is prevented from coming into contact with the mounting surface, and sanitary handling is achieved. You can do it.

On the other hand, as shown in FIG. 2, the lid 2 is formed with a cylindrical portion 13 penetrating from the upper plate 16 to the lower plate 17. Is formed by fitting a lower plate vertical tubular portion 53 formed at the center of the lower plate 17 through a packing 54 into an upper plate hanging tubular portion 52 formed at the lower end of the lower plate vertical tubular portion 53. An annular ridge 55 is formed on the inner periphery.

A recess 2a for accommodating the lower cover 23 of the steam cap 20 is formed around the opening edge of the upper end of the upper plate hanging cylindrical portion 52 formed at the center of the upper plate 16 of the lid 2. A finger insertion portion 2b is formed in which a finger can be inserted into the concave portion 2a from the outside of the steam cap 20 and the steam cap 20 can be removed.

A concave portion 57 is formed at the center of the upper surface of the inner lid 12.
To form a steam hole 58 in the bottom surface of the concave portion 57. A cylindrical lid knob 56 is provided on the upper surface of the inner lid 12 so as to surround the outer periphery of the concave portion 57, and a locking annular groove 88 formed on the outer peripheral side of a cylindrical packing 87 fitted outside the lid knob 56. The inner annular ridge 55 of the lower plate vertical cylindrical portion 53 is elastically fitted and removably locked, and the inner lid 12 is detachably attached to the lid 2 by this locking. .

The lid knob 56 is connected to an outer flange 71 forming a base formed at an opening edge of a lower end of the inner lid 12 of the pin 72.
The steam pipe 25 of the steam cap 20 is fitted into the lid knob 56, and the steam introduction passage 14 is formed between the lid knob 56 and the steam pipe 25. Steam is taken in from the steam inlet 26 of the steam pipe 25.

At the outer peripheral side of the upper end of the steam pipe 25, a bent portion 63 bent inward in a V-shaped cross section is provided at the lower end.
A ring packing 63 having a is provided. The ring packing 63 has, at its upper end, a locking portion 63b that is fitted and locked to a plurality of inner flanges 64 formed on the inner periphery of the upper plate hanging cylindrical portion 52 of the upper plate 16 in the lid 2. Then, the locking portion 63b closes the space between the steam cap 20 and the lid 2, and in this closed state, the bent portion 63a abuts the upper opening edge 59 of the lid knob 56, and the steam in the steam pipe 25 The steam introduction passage 14 leading to the intake 26 is formed, so that the ring packing 63 has one of the functions described above.

Therefore, the ring packing 63
Is to close the space between the steam cap 20 and the lid 2 by fitting the cylindrical portion 13 of the lid 2 to prevent the introduction of outside air and the radiation of air from the inner lid 12, and the upper opening edge of the lid knob 56. At the same time, the steam introduction passage 14 that comes into contact with the steam 59 and reaches the steam intake port 26 of the steam cap 20 is also formed.

As described above, since the steam introduction passage 14 is formed between the lid knob 56 of the inner lid 12 and the steam pipe 25 of the steam cap 20, the steam introduction passage 14 is specially formed.
Can be easily formed by fitting the existing member, ie, the steam pipe 26, into the lid knob 56 without the need for a member for forming the component, and the number of components can be simplified.

Also, the steam pipe 25 and the lid knob 56
The degree of pressure adjustment can be easily adjusted in accordance with the interval by fitting the steam into the steam pipe 25 and the steam from the steam inlet 26 of the steam pipe 25. Accordingly, the formation of the steam introduction passage 14 is also facilitated.

In this configuration, the steam generated during the cooking of rice is formed between the lid knob 56 of the inner lid 12 and the steam pipe 25 through the steam hole 58 formed in the bottom of the concave portion 57 at the center of the upper surface of the inner lid 12. Through the steam introduction passage 14, and from the steam intake 26 of the steam pipe 25 to the steam communication passage 29 in the steam pipe 25 and the steam communication opening 38, and a steam discharge passage formed between the upper cover 22 and the lower cover 23. The gas is discharged to the outside through a gas outlet 28 and a steam outlet 27.

As described above, since the steam passes through the steam introduction passage 14 formed between the lid knob 56 of the inner lid 12 and the steam pipe 25 of the steam cap 20, the steam discharge path becomes longer and the number of spills is reduced. Further, a heat insulating space 91 is formed by an air layer between the inner lid 12 and the lower plate 17 of the lid 2, so that the moisture retention and the heat retention can be improved.

The upper cover 2 of the steam cap 20
2 is provided with a ball holder 34 on which the closing ball 24 is installed, and the ball holder 34 is formed with a communication port 38 of a steam communication path 29 formed in the steam pipe 25 of the lower cover 23. The communication port 38 is closed by the weight of the closing ball 24.

As described above, the closed ball 24 installed on the ball holder 34 is attached to the steam pipe 2 of the lower cover 23.
By closing the communication port 38 from the vapor communication passage 29 in the inside 5, invasion of outside air and heat radiation from inside air can be prevented, and the moisture retention and heat retention can be improved.

The ball holder 34 has an inner bottom surface inclined at a funnel-shaped downward slope, and a plurality of radially extending ribs 65 are formed along the inclined surface.
The closing ball 24 is placed on the lower surface of the ball holding member 34 to smoothly move the ball holding member 24 toward the communication port 38, and the outer peripheral side of the back surface of the ball holding member 34 faces upward at the opening edge formed by the steam pipe 25. When the upper cover 22 is helicoidally coupled to the lower cover 23 along the inclined surface 92, the upper cover 22 and the lower cover 23 may be in close contact at the same time.

Further, the steam cap 20 is provided as shown in FIG.
As shown in FIG. 3, the steam outlet 27 of the upper cover 22 between the peripheral side in the upper cover 22 and the outer peripheral side in the lower cover 23.
An outer annular space 66 of the oneva reservoir is formed further outward, and when the lid 2 is pivoted to open, the oneva remaining in the steam cap 20 which is simultaneously pivoted and tilted is removed. Can be prevented from flowing out from the steam discharge port 27 and can be stored in the outer peripheral annular space 66 of the oneva reservoir. Therefore, even when the lid 2 is opened, the oneva flows out of the steam cap 20 due to the outflow. Dirt on the upper surface of the lid 2 can be prevented.

As shown in FIGS. 8 and 9, a steam hole 58 formed at the center of the inner lid 12 is provided.
A one-diameter opening is formed to serve as a oneva return port through which the oneva returns from the oneva return port 30 by opening the oneva return valve 90, and a predetermined interval is annularly formed between the central portion of the inner pot 12 and the outer peripheral edge. And a plurality of steam through holes 58a having a larger diameter than the steam holes 58 are formed.
As the communication holes for steam.

The inner pan 12 forms a slope having a downward slope from the central portion toward the outer peripheral edge, and has a predetermined interval annularly formed on the outer peripheral edge to have a smaller diameter than the steam through hole 58a. Oneva return through holes 58b are formed.

In this configuration, the steam containing the oneva from inside the inner pot 3 mainly flows into the space between the inner lid 12 and the lower plate 17 of the lid 2 through the steam passage hole 58a having a large diameter. Is connected to the steam introduction passage 14 extending from the communication port 17b formed at the lower end of the lid knob 56 formed to the steam intake port 26 of the steam cap 20.

In this case, a recess 12a is formed in the center of the inner pot 13 where the steam hole 58 is formed, and the one-way return valve 90
Is released and the Oneva flowing down from the Oneva return port 30 is temporarily stored in the concave portion 12a, and is gradually returned into the inner pot 3. Oneva that overflows from the concave portion 12a and oneva that adheres to the upper surface of the inner lid 12 are the inner lid 1
Partially flows down from the steam through hole 58 along the downwardly inclined surface of 2, and the other oneva flows along the outer peripheral edge to gradually enter through the oneva return through hole 58b formed at the outer peripheral edge. It is made to return to the pot 3.

In this configuration, an annular hanging wall which hangs down from the heat insulating space 91 formed by the air layer between the lower plate 17 and the inner lid 12 and comes close to the upper surface of the inner lid 12 on the lower surface of the lower plate 17 of the lid 2. 17a, and the annular hanging wall 17a is positioned close to the steam hole 58a between the steam hole 58a of the inner lid 12 and the communication hole 17b formed at the lower end of the lid knob 56. ing.

By the formation of the annular hanging wall 17a, as shown in FIG. 9, the steam containing oneva flowing into the heat insulating space 91 formed by the air layer from the steam through hole 58a of the inner lid 12 allows the steam to pass through. The hole 58a serves as a blowout port, and hits the annular hanging wall 17a and bulges like a balloon between the lower surface of the lower plate 17 and the one under the viscosity of the oneva, and eventually bursts.

The ruptured Oneva is attached to the annular hanging wall 17a.
By the formation of this, most of the steam flows down to the outside (the side opposite to the steam cap) of the annular hanging wall 17a, and the steam containing the oneva flows into the gap between the lower end of the annular hanging wall 17a and the upper surface of the inner lid 12. Outflow from S.

As described above, by forming the annular hanging wall 17a, the annular hanging wall 17a acts as a vapor-liquid separating wall for steam and oneva, and the oneva is prevented as much as possible from flowing into the steam cap 20. In this way, the amount of Oneva released from the steam cap 20 is reduced.

(Embodiment 2) In Embodiment 2 shown in FIGS. 6 to 7, a steam hole 58 formed in the center of the upper surface of the inner lid 12 is formed in the inner bottom of the lid knob 56 of the inner lid 12.
A steam passage tube 73 forming a steam communication passage 29 is formed at the upper end opening edge of the steam passage tube 73.
And the steam communication passage 29 is closed by its own weight. Also, on the inner bottom of the lid knob 56,
Oneva return holes 89 are formed from positions slightly protruding from the bottom surface, so that the oneva that accumulates at the inner bottom is returned into the inner pot 3.

The steam cap 20 has a lower cover 2
3 is provided with a closed ball holding body 34, and the closed ball holding body 34 is provided with a locking claw 74 formed at the lower end thereof.
3 has a resin elasticity and is removably engaged with a locking hole 75 formed on the bottom surface of the base 3.

The lid 2 is detachably attached to a lower surface of the upper plate 16 made of a synthetic resin which constitutes an outer surface, and the inner and outer double plates which constitute a lower plate with respect to the upper plate 16. And a lower lid 17 made of stainless steel having the vacuum structure described above.

The lower plate 17 made of stainless steel and having a double inner and outer vacuum structure serving as the lower plate is attached to a mounting hole 76 formed at the center of the upper plate 16 at the center of the upper plate 16. The fitting 52 is inserted into the fitting hole 76 and detachably screwed into the upper plate hanging tubular portion 52 from below the edge of the mounting hole 76 by the screw barrel 77, so as to be sandwiched therebetween. This lower lid 1
The screw 7 can be removed by unscrewing the screw tube 77, and can be washed and washed. Further, by having a double vacuum structure inside and outside, the heat retention can be further improved.

Then, the bottom of the lower cover 23 of the steam cap 20 is fitted into an upper plate hanging cylindrical portion 52 formed at the center of the upper plate 16, and the ring packing 63 provided on the bottom opening edge is provided. Bent portion 6 with a U-shaped cross section
3a is placed by contacting the upper opening edge 59 of the lid knob 56.

In this configuration, steam generated during cooking rice is supplied to the steam hole 58 formed in the center of the upper surface of the inner lid 12.
From the steam communication passage 2 formed on the lid knob 56 of the inner lid 12
9, through a steam discharge passage 28 formed between the upper cover 22 and the lower cover 23 from the bottom opening formed in the bottom of the steam cap 20 against the dead weight of the closing ball 24. It is discharged to the outside through the steam discharge port 27.

As described above, since the steam passage 29 can be formed by using the lid knob 56 without using any special member, the structure of the parts is simplified, and accordingly, the steam passage is connected to the lid knob 56. And the steam cap 20 are formed by the two members, so that cleaning by residual Oneva contained in the steam can be easily performed with only these two members.

In the configuration shown in FIG. 7, a mounting hole 83 is formed in the center of the inner lid 12, and the lower end of the lid knob 56 is fitted into the mounting hole 83, and the lower end of the fitting is inserted into the lower end. The inner peripheral side of the Oneva receiving tray 78 is detachably screwed from the back surface of the lid 12 to hold the edge of the mounting hole 83,
The lid knob 56 is attached.

The side walls of the Oneva tray 78 and the lower end side wall of the lid knob 56 have communication ports 79, 8 communicating with each other.
1 are formed, and communicate with the vapor communication passage 29 of the lid knob 56 from the communication ports 79 and 81.

As described above, the lid knob 56 is removed from the inner lid 12, and the steam passage 29 formed in the lid knob 56 is removed.
Can be easily cleaned, so that it is clean and sanitary.

In this configuration, not only the removal of the lid knob 56 but also the lower cover 2 with respect to the steam cap 20 and the upper cover 22 of the steam cap 20.
3, and also all the members forming the vapor passage can be removed from the ball holder 34 and the closing ball 24, so that the cleaning becomes easier and more hygienic.

The other structure and the operation and effect provided by the structure are not particularly different from those of the first and second embodiments, and duplicate illustration and description will be omitted.

[0097]

According to the steam discharging mechanism of the electric rice cooker according to the present invention, a steam discharging port is formed on the upper surface of the steam cap on the peripheral side, and the steam discharging port is opened toward the center. With such a configuration, even with the generation of steam containing oneva, oneva contained in this steam can also be prevented from flowing out toward the center of the steam cap and flowing out from the outer peripheral side of the steam cap in all directions. The dirt on the upper surface of the lid by the oneva is prevented as much as possible, and the care is simple and sanitary.

[0098] In the steam discharging mechanism of another electric rice cooker according to the present invention, a dome-shaped bulging portion having an upward slope from the steam discharging port is formed at the center of the upper surface of the steam cap. Since the oneva flowing toward the portion is returned to the steam outlet through the inclined surface again from above the bulging portion, the oneva is further prevented from flowing out from the outer peripheral side of the steam cap in all directions. As a result, the above-mentioned effect is achieved.

In another electric rice cooker steam discharging mechanism according to the present invention, since the upper cover is detachably attached to the lower cover of the steam cap, the steam cap is separated by the lower cover and the upper cover. The steam passage formed in the lid is opened, and the steam passage can be cleaned, and the steam cap and the steam cap can be easily and sanitarily cleaned together with the upper surface of the lid.

In another embodiment of the steam discharging mechanism of the electric rice cooker according to the present invention, the steam pipe formed on the lower cover of the steam cap has a steam inlet formed at an upper portion and a oneva reservoir formed at a bottom portion. Therefore, the oneva stored in the bottom of the oneva pool is prevented from being blown off by the steam from the steam intake formed above the oneva pool, and many of the oneva from the steam outlet are prevented from being blown off. Scattering can be suppressed.

In another steam discharging mechanism of the electric rice cooker according to the present invention, a oneva return port is formed at the bottom of the steam pipe, and an oneva return valve which is opened by the weight of the oneva is provided at the oneva return port. Therefore, the oneva stored in the oneva pool is prevented from flowing down due to the weight of the oneva, and the oneva accumulating above the oneva return port.
It is possible to further prevent the outflow of Oneva and to reduce the nutrients contained in Oneva and the taste of rice by returning the Oneva back into the inner pot.

Further, in another steam discharging mechanism of an electric rice cooker according to the present invention, since the steam pipe has legs formed on the bottom and back surface thereof, the steam cap can be removed even when the steam cap is removed and placed on a table or the like. Is prevented from contacting the mounting surface, and sanitary handling can be performed.

In the steam discharging mechanism of another electric rice cooker according to the present invention, since the steam introducing passage is formed between the lid knob and the steam pipe, a special member for forming the steam introducing passage is required. It can be formed by fitting a steam pipe, which is an existing member, to the lid knob, and the number of parts can be simplified, and the fitting interval between the steam pipe and the lid knob can be reduced. By adjusting, the degree of pressure regulation can be easily adjusted according to the interval, and accordingly, the steam from the steam introduction passage can be taken in from the steam intake of the steam pipe, thereby forming the steam introduction passage. Is also easy.

In another steam discharging mechanism for an electric rice cooker according to the present invention, a communication port of a steam communication path formed in a steam pipe of a lower cover is formed in a ball receiver, and the communication port is closed with a closed ball. To prevent outside air from entering through the communication port and heat radiation from inside air.
Heat retention can be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of an electric rice cooker according to Embodiment 1 of the present invention.

FIG. 2 is an enlarged sectional view of a steam discharging mechanism of the electric rice cooker in FIG.

FIG. 3 is an enlarged sectional view of a steam cap in the steam discharge mechanism of the electric rice cooker in FIG.

FIG. 4 is an enlarged sectional view of a state in which a steam discharge mechanism of the electric rice cooker in FIG. 3 is inclined.

FIG. 5 is an enlarged sectional view of a steam cap showing another example of the steam discharge mechanism according to Embodiment 1 of the present invention.

FIG. 6 is a partially enlarged sectional view of a steam discharge mechanism of the electric rice cooker according to Embodiment 2 of the present invention.

FIG. 7 is a partially enlarged cross-sectional view of a steam discharge mechanism of an electric rice cooker showing another example according to Embodiment 2 of the present invention.

FIG. 8 is a cross-sectional view of a steam discharge mechanism of an electric rice cooker showing another example according to the embodiment of the present invention.

9 is a partially enlarged cross-sectional view of the steam discharge mechanism in FIG.

FIG. 10 is a diagram showing a relationship between opening and closing of the oneva return valve and energization of a heater according to the embodiment of the present invention.

FIG. 11 is a partially enlarged sectional view of a steam discharge mechanism of an electric rice cooker showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rice cooker main body 2 Lid 3 Inner pan 5 Outer case 6 Inner container 12 Inner lid 14 Steam introduction passage 16 Upper plate 17 Lower plate 20 Steam cap 22 Upper cover 22a Central part 22b Peripheral side part 23 Lower cover 24 Closed ball 25 Steam Pipe 26 Steam inlet 27 Steam outlet 28 Steam outlet passage 29 Steam communication passage 30 Oneva return port 35 Swelling part 37 Oneva reservoir 38 Communication port 39 Leg 56 Cover knob 90 Oneva return valve

Claims (8)

[Claims] 1. A steam discharge mechanism for an electric rice cooker, comprising: a rice cooker main body in which an inner pan is housed; a lid for opening and closing the opening of the rice cooker main body; and heating means for heating the inner pan. In the above, a steam cap for discharging steam to the outside is detachably attached to the lid, a steam outlet is formed on a peripheral side portion of the upper surface of the steam cap, and the steam outlet is opened toward a central portion. A steam discharge mechanism for an electric rice cooker. 2. The steam discharging mechanism of an electric rice cooker according to claim 1, wherein a bulging portion having a dome shape rising upward from a steam discharging port is formed at a central portion of the upper surface of the steam cap. 3. The steam cap includes an upper cover having a steam outlet formed therein, and a lower cover forming a steam discharge passage between the upper cover and the upper cover. The upper cover is detachably attached to the lower cover. The steam discharging mechanism of an electric rice cooker according to claim 1 or 2, wherein the steam discharging mechanism is attached. 4. A steam pipe forming a steam communication passage is formed on a lower cover of the steam cap, and the steam pipe has a steam intake port formed at an upper portion and an oneva reservoir portion formed at a bottom portion. The steam discharging mechanism of an electric rice cooker according to claim 3. 5. The electric rice cooker according to claim 3, wherein an oneva return port is formed at the bottom of the steam pipe, and an oneva return valve opened by the weight of the oneva is provided at the oneva return port. Steam exhaust mechanism. 6. The steam for an electric rice cooker according to claim 5, wherein a leg is formed on the back surface of the bottom of the steam pipe, and the oneva return valve is provided above a ground position of the leg. Discharge mechanism. 7. An inner lid of the inner pan is provided with a cylindrical lid knob on an upper surface, and a steam pipe of the steam cap is fitted into the lid knob, and steam is generated between the lid knob and the steam pipe. The steam supply passage is formed so that steam from the steam introduction passage is taken in from a steam intake of the steam pipe.
The steam discharge mechanism for an electric rice cooker according to any one of the above items 6 to 9. 8. A ball receiver on which a closing ball is installed is provided on an upper cover of the steam cap, and a communication port of a steam communication passage formed in a steam pipe of the lower cover is formed in the ball receiver. The steam discharge mechanism of an electric rice cooker according to any one of claims 4 to 7, wherein the communication port is closed by the weight of the closing ball.