JPS5849706Y2 - Rice cooker water level setting device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of a water level setting device for a rice cooker.

The inventor of this application developed it earlier (Utility Model No. 56-1515)
One end is connected to the bottom of the coming vehicle, and the other end is raised and lowered to allow excess water to overflow.
A water level adjusting device having a water level adjusting pipe, a water level display scale, and a locking means, in which a vertical slit with a water level display scale is provided on the front wall of a cylindrical case with an open bottom end, and the other end of the water level adjusting pipe is It is inserted into the cylindrical case so that it can slide up and down,
An overflow communication member having a removably attached water level adjustment knob is provided, and the front wall of the case is held between the overflow communication member and the adjustment knob.

However, in such a device, a jet of washing water is sent into the ice chamber from the bottom upwards to perform the cleaning action, and then the water supply valve is closed, the drain valve is opened, and the dirty water is drained from the lower end of the ice chamber to the drain pipe. It was disposed of through

The cleaning action was completed by repeating this cycle several times.

Therefore, a separate drain pipe and drain valve are required, and it takes a long time to drain water, which has the disadvantage that the entire rice cooking process takes a long time.

It is an object of the present invention to provide a water level setting device for a rice cooker that eliminates the above-mentioned drawbacks, eliminates the need for a drain valve, and significantly shortens drain time.

An embodiment of the present invention will be described below based on the drawings.

In FIG. 1, the rice washing chamber 1 has a cylindrical body with an open top, the lower part of which is shaped like a wide cone, and an overflow surface drain port 1b is provided at the upper part of the peripheral wall 1a.

The lower part of the rice washing chamber 1 is connected to the rice cooking section B via a water supply and drainage connection section 6, a washed rice input gate valve mechanism 70, and a washed rice supply pipe 9 hanging vertically.

In the rice cooking section B, a pot lid B2 is opened and closed in a vertically movable manner with respect to a pot body B1.

A washed rice supply pipe 9 is flexibly inserted into the iron lid B2 and connected airtightly via a seal packing.

A cylindrical vertical rising pipe 2 is installed in the center of the rice washing chamber 1.
It is fixed with a support member 2a with a predetermined gap between it and the lower inner wall surface.

Directly above the vertical riser pipe 2, a downward bowl-shaped reversing member 5 is installed with a gap therebetween via a mounting member 5a.

Water supply and drainage connection part 6 connected to the lower part of the lower wire diameter of the rice washing room 1
As shown in FIGS. 2 and 3, this is an annular block body provided with a rice washing through hole 6a having the same diameter as the inner diameter of the reduced diameter portion of the rice washing chamber in the center thereof.

An internal water supply/drainage port 6b is formed in an annular manner around the inside of the rice washing through hole 6a and is communicated with a water supply/drainage pipe 10 described later.

The rice washing through hole 6a and the internal water supply/drainage port 6b are separated by a filter 6C that prevents rice from passing through.

A rice washing input gate valve box 7 is connected to the lower part of the water supply and drainage connection part 6.

That is, the washed rice input gate valve box 7 has a rectangular thick plate shape, and includes a valve box upper part 71 integrally formed on the lower surface of the water supply and drainage connection part 6, and a rectangular thick plate shaped valve box integral with the valve box upper part 71. lower part 7
2 and more.

A valve inlet hole 7a having the same diameter and communicating with the rice washing through hole 6a is bored in the upper part 71 of the valve box.

In addition, a valve outlet hole 7b concentric with the valve inlet hole 7a is bored in the lower part 72 of the valve box, and a washed rice supply pipe 9 having approximately the same inner diameter as the valve inlet hole 7a is fitted and welded in some companies 7b. be done.

Between the valve box upper part 71 and the valve box lower part 72, a plate valve body 8, which will be described below, is fixed by means such as bolt tightening so as to maintain a slidable space.

The plate valve body 8 is made of a rectangular plate, and is slid in close contact between the upper part 71 and the lower part 72 of the valve box by a driving means 8a, so that it can move forward and backward (in the left-right direction in FIG. 2).

The valve body 8 is provided with a valve hole 81 that coincides with the valve hole outlet holes 7a and 7b so that the valve is opened in its most advanced position (rightward movement in FIG. 2).

In order to seal the gap between the valve body 7 and the plate valve body 8, a first seal O-ring 11 and a second seal O-ring 11 are used as shown in the third figure.
A ring 12 is provided.

That is, the 10th J ring 11 is concentric with the inlet holes 7a and ga at the lower and upper sides of the upper valve box upper 71 and lower valve box 72, respectively.
In addition, a plate valve body 8 is slidably provided at a position surrounding several companies 7a and 9a with a slight interval between them, so as to sandwich the valve body from above and below.

Further, the 20th ring 12 is located outside the 10th ring 11 and outside the valve hole 81 when the valve is fully closed, and is provided vertically facing each other so as to sandwich the plate valve body 8 from above and below.

These first. Elastic rubber gaskets 11, 12a are attached to the opposite valve plate side of the 20th ring 11, 12.

The upper and lower portions 71 and 72 of the valve box are assembled using the bolts 20C.
By adjusting the tightening degree of the rubber gasket ll.
Together with the elastic forces of a and 12a, the plate valve body 8 slides lightly through the O-ring, and is sealed to the extent that no water leaks.

The water supply and drainage pipe 10 has one end communicated with an internal water supply and drainage port 6b, and a drain pipe 10b is branched into a T-shape from the straight water supply pipe 10a, and a switching valve (not shown) is installed in the water supply pipe 10a. has been done.

Further, a water level setting pipe 20, at least a portion of which is a flexible pipe, is connected to the drain pipe 10b, and a water level setting part C is connected to the distal end of the water level setting pipe 20.

The water level setting pipe has a flexible bellows pipe part 20a connected to the drain pipe 10b, and a vertical straight pipe part 2 connected to the tip thereof.
0 b.

Further, a water level setting drain pipe 21 for discharging surplus water is connected to the water level setting section C, and includes an elevating straight pipe section 21 a and a bellows pipe flexible section 21 b connected to the lower end thereof.

The lower end of the drain pipe 21 is connected to the water supply and drain pipe 10 as shown in FIG.
The connection position to the water supply and drainage connection part 6 is lowered by H3.

The water level setting section C is constructed as follows, as shown in Fig. 4.5.6.

A sliding guide rod 22 is provided on the frame D, and a moving plate 40 for adjusting and setting the water level is engaged with the sliding guide rod 22 so as to be slidable in the vertical direction.

The movable plate 40 is slidably supported by the guide rod 22 via a guide tube 45, and can be stopped at an appropriate height by a water level setting knob 23 that threads through the movable plate 40.

In the water level fine adjustment member 30, an inverted U-shaped channel member 50 is attached to the rear of the movable plate 40 so as to be movable up and down.

That is, a male threaded member 31 having a dial 31b attached to the upper part of a vertical shaft portion 31a is rotatably attached to the rear of the moving plate 40, and a female threaded member 32 screwed to the male threaded member 31 serves as a flow path member. 50, and the channel member 50 is configured to move slightly by rotating the dial 31b.

A vertically long slit 41 is provided on the center line of the movable plate 40 in the vertical direction.

Further, a horizontally long slit 42 is provided at the top of the movable plate 40, and the slit 42 serves as a window for rotating the dial 31b. It is said that

A fine adjustment pointer 32a is written on the front side of the male screw member 32, and on one side edge of a vertically long slit toward which the pointer 32a faces, there is a fine adjustment scale 40a consisting of ten scales and one scale above and below centering on O. is engraved.

Further, an arrow 40b pointing outward is attached to an intermediate portion in the vertical direction on one side of the movable plate 40, and a water amount scale 44 corresponding to the amount of cooked rice is displayed on the vertical frame D on the side opposite to the arrow. A display board 43 is provided.

A channel member 50 mounted on the rear side of the movable plate 40 so as to be vertically movable is constructed as shown in the fifth and sixth figures.

That is, an inverted U-shaped channel 51 a is formed inside a short cylindrical main body 51 having a semicircular upper part, and a transparent lid 52 is fixed to the rear surface of the main body 51 .

The setting pipe 20b and the discharge pipe 21a are connected to the lower surface of the main body 51 so as to communicate with the flow path 51a.

Further, an air hole 56 communicating with the flow path 51a is provided on the upper surface of the main body 51, and an air pipe 93 having an air valve 94 is connected to this hole.

Next, the operating state will be explained.

Now, for example, if you want to cook 3.5 liters of rice, the rice cooking amount display board 4
The overflow height of the water level setting pipe 20 is determined by raising the water level setting knob 23 to the water level scale position 4403.5 and aligning it with the arrow 40b.

At this time, the air valve 94 is opened and communicated with the atmosphere.

In FIGS. 1 and 7, when the valve mechanism 70 is in the closed state, rice A settles and accumulates in the lower diameter reduced part of the rice washing chamber 1. When the water supply valve G is opened, water flows in from the water supply pipe 10a, and as a result, the air valve 93 to the channel member 50. Air is sucked into the water supply pipe 10a through the water level adjustment pipe 20, enters the rice washing chamber 1 together with water, rises inside the vertical rising pipe 2, and hits the reversing member 5 along the arrow E. Further, it reverses and falls in the direction of arrow F.

The above steps are repeated until the rice is washed.

Water contaminated by washing rice is drained from the upper overflow drain port 1.
Floating objects are simultaneously discharged through overflow 1C from b.

However, a large amount of sewage remains in the rice washing room 1. Therefore, the water supply valve of the water supply pipe 10a of the water supply and drainage pipe 10 is closed, and the air valve 94 is also closed.

As a result, as shown in FIG.
Since it is located above H1 than 0, the water head causes rice washing room 1.
The water inside enters the water level setting pipe 20 and the flow path member 50,
Further, the water is discharged through a water level setting drain pipe 21.

Once the water surface is at the same height as the channel member 50, all the water is drained out by the siphon action based on the water head corresponding to the height H2 with respect to the lower end of the water level setting drain pipe 21.

Here, the water in the rice washing room is kept at the above height H until it is completely drained.
Since it receives the suction force due to the siphon effect equivalent to 2, the water is drained in an extremely short time.

For this reason, the rice bran etc. floating in the water are discharged without re-adhering to the washed rice.

On the other hand, when water is drained not by the siphon effect but simply by the water head caused by the water level in the rice washing chamber, the water head eventually decreases, the drainage speed also decreases, and the draining time becomes considerably long, causing the rice bran to regenerate. It will stick to the rice.

When all the waste water has been drained, the air valve 94 is opened and the water supply pipe 10 is opened.
A is opened, clean water is supplied, and the water is drained again in the same manner as above, and this water supply and drainage are repeated several times to perform the rinsing action.

When the cleaning work is completed in this manner, the water supply valve is opened with the air valve 94 open, water is poured from the water supply pipe 10a until the water level reaches a level higher than the flow path member 50, and the water supply valve is closed.

The water in the rice washing chamber 1 is discharged through the water level setting pipe 20, the channel member 50, and the drain pipe 21, and the water level stops when the water level becomes equal to the height of the channel member 50.

This allows the water level to be set according to the amount of water required for cooking rice.

Then, the plate valve body 8 is moved by the driving means 8a to open it, and the rice water mixture is introduced into the rice cooker B through the washed rice supply pipe 9.

In addition, considering the case where the water pressure of the water pipe system connected to the water supply pipe 10a is low and a sufficient cleaning effect cannot be obtained,
A preliminary water supply pipe 3 having a preliminary water supply valve 4 is installed through the lower part of the side wall 1a of the rice washing chamber, and an upwardly opened injection pipe 3a is provided at the tip thereof.

Furthermore, when the water pressure of the water pipe system connected to the water supply pipe 10a is relatively low, a portion of the water supply is transferred to the water level setting pipe 20,
In consideration of the water escaping through the water level setting drain pipe 21 and the flow path member 50, the amount of water discharged through the three pipes 20, 21, and 51 is considerably smaller than the amount of water supplied through the water supply pipe 10. The dimensions of both channels are determined.

The above is for the case where the hardness of the cooked rice is standard; when cooking rice that is softer than the standard, use the fine adjustment dial 31b to raise the pointer 32a with respect to the scale 40a.
When the flow path member 50 is slightly raised by turning the screw members 31a and 32, the amount of water increases accordingly, and soft rice can be cooked.

Conversely, when cooking hard rice, the fluid member 5
If you lower the water level to 0, the water level will be lower and you will be able to cook rice without losing the amount of water.

As described above, the present invention is provided with a water level setting pipe, a water level setting discharge pipe, and an inverted U-shaped channel member connected between them to set the water amount, and drainage is performed through these, so it is easy to use. The amount of water can be set by operation, the structure is simple, there is no failure, and it is easy to handle.

In addition, the device is simplified by eliminating the need for a drain valve, and since the water from the rice washing room is drained by the siphon action, the drainage speed is greatly increased, the cleaning effect is improved, and the cleaning time is significantly shortened.

This greatly contributed to reducing product costs.

In addition, the water supply and drainage pipe is a T-shaped drainage pipe branched from a straight water supply pipe, and a water level setting pipe is connected to the tip of the drainage pipe, and an inverted U-shaped flow path is connected to the upper end of the water level setting pipe. An air tube with an air valve is connected to the member.

Therefore, as the water passes through the water supply pipe, air is sucked into the water supply pipe from the air valve through the water level setting pipe, enters the rice washing chamber, becomes air bubbles, increases the washing effect, and the presence of air bubbles causes the rice to stick together. They are less likely to collide with each other and be destroyed.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view showing one embodiment of the present invention;
The figure is a II-II enlarged sectional view, and Figure 3 is the II-II section of Figure 2.
I-III sectional view, Figure 4 is an enlarged view of the main part of Figure 1, Figure 5
The figure is a rear view of figure 4, figure 6 is a right side view of figure 4, and figure 7 is a rear view of figure 4.
The figure is an explanatory diagram. A...Rice, B...Rice pot, C...
...Water level setting section, 1...Rice washing room, 1b...
・・Drain port, 2・・・・Vertical rise pipe, 3・・・・
Water supply pipe, 5... Reversing member, 6... Water supply and drainage connection part, 7... Valve box, 8... Valve body,
9... Rice washing supply pipe, 10... Water supply and drainage pipe, 10'a... Water supply pipe, 10b... Drain pipe, 20... Water level setting pipe, 21...
Water level setting drain pipe, 31...Male thread member, 32.
...Female screw member, 40...Movable plate, 43
...Rice cooking amount display board, 50...Inverted U-shaped channel member, 93...Air pipe, 94...
air valve.

Claims (1)

[Scope of utility model registration request] A water supply and drainage connection part is connected to the lower part of the rice washing chamber, and the water supply and drainage connection part is provided with a passage hole for the washing material, and a water supply and drainage port connected to the water supply and drainage pipe through a filter is provided around the inside of the passage hole. , the water supply and drainage pipe is a straight water supply pipe with a drain pipe branched into a T-shape, and the lower end is connected to the drain pipe at the bottom of the rice washing room so that surplus water can be disposed of according to the water level in the rice washing room. A water level setting pipe connected to the upper end thereof so as to overflow, an inverted U-shaped flow path member connected to the upper end of the water level setting pipe, and a water level setting drain pipe connected to the lower surface of the flow path member. an air pipe having an air valve connected to the upper surface of the flow path member, the lower end of the water level setting drain pipe being located below the lower end of the water level setting pipe. Water level setting device.