JPS63139515A - Rice cooker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a rice cooker equipped with a rice washing function.

(Prior art) When cooking rice using a rice cooker at home,
It is common for a user to use a rice cooker pot to wash the rice themselves in a sink, and then place the pot with the polished rice in the rice cooker.

(Problems to be solved by the invention) Conventionally, the user had to sharpen the rice himself;
It is labor-intensive, and there is also the problem that when rice is subjected to TIF, the outer surface, which is rich in nutrients, is scraped and washed away.

The present invention was made in view of the above circumstances, and its purpose is to be able to wash rice automatically, without requiring any labor, and to retain nutrients by eliminating the need to scrape off the outer surface of rice during washing. There is a rice cooker that can be provided.

[Structure of the Invention] (Means for Solving the Problems) The rice cooker of the present invention has an attachment pipe part protruding to the back side of the lid of the top opening of the main body, so that water from a water supply source can be supplied to the rice cooker. A water supply channel is provided, and a pot having flanges at openings on two sides and an overflow hole at the top of the circumferential wall is removably attached within the inner frame of the main body, and a pot is removably attached to the inner frame of the main body. A lid is removably attached to the inner lid, and when the lid body is closed, the inner lid is pressed by the attachment tube to bring the inner lid into pressure contact with the flange of the pot, and the water from the attachment tube is drained into a tapered shape. A presser member is installed to supply the inside of the pot through the nozzle part, and a drainage channel is formed between the inner frame and the pot for discharging overflow water from the overflow hole to the outside of the main body. It is characterized by a configuration in which a rice-cooking heater is provided to heat the pot via an inner frame.

(Function) According to the rice cooker of the present invention, when unwashed rice is stored in the pot and the lid is closed, the holding member is pressed by the mounting pipe portion to press the inner lid against the flange portion of the pot. Then, when water is supplied from the water supply source to the water supply channel, the water is received by the holding member and sprayed into the pot from the nozzle, and this water flows from the overflow hole of the pot into the inner frame. The overflowing water will be drained out of the main body from the drain channel, and the rice in the pot will be automatically washed away by the jet of water supplied from the nozzle part of the holding member, and the washed away dirt will be removed. The water will be discharged outside along with the overflow water, and after that, the water supply from the water source to the water supply channel will be stopped.
The rice is cooked using a rice-cooking heater.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

Reference numeral 1 denotes a main body, which includes a flat base 2 having a bottom plate 2a, a substantially cylindrical outer frame 3 that stands upright, and a substantially bottomed cylindrical frame disposed within the outer frame 3. Inner frame 4 and
A frame body 5 connecting the upper ends of these inner frames 4 and outer frames 3
and a substantially bottomed cylindrical heat shielding body 7 supported at the bottom of the inner frame 4 via a heating plate 6 to be described later and located between the inner frame 4 and the outer frame 3. A heat insulating material 8 is interposed between the heating body 7 and the outer frame 3. The lower part of the inner frame 4 is formed with a small diameter part 4a that projects inward, and the heating plate 6 is attached to the small diameter part 4a and the bottom part 4b so as to fit with the outer surfaces thereof. An electric heater 9 for cooking rice, which is a heater for cooking rice, is buried in the heating plate 6. 1
0 is a pot having a flange portion 10a at the top opening,
This has a substantially bottomed cylindrical shape whose diameter gradually decreases toward the bottom 10b, and the diameter ratio of the bottom 10b to the top opening is set to, for example, 1:1.5 to 2.5. On the peripheral side wall of the pot 10, the same -
Several overflow holes 11 are formed along the circumference (see Figure 3). This pot 10 is removably inserted into the inner frame 4 so that its flange portion 10a is placed a on the upper end of the inner frame 4, and when the pot 10 is attached, the circumferential side wall is attached to the periphery of the inner frame 4. A predetermined gap 12 is formed between the inner frame 4 and the side wall, and the lower part including the bottom part 10b comes into contact with the small diameter part 4a of the inner frame 4, which is the lower part including the bottom part 4b. In this case, a part of the small-diameter portion 4a of the inner frame 4 does not protrude inward but continues in an inclined manner with the upper portion thereof, and when the pot 10 is attached, there is a gap between the small diameter portion 4a and the lower portion of the inner frame 4. A drainage channel 13 communicating with the gap 12 (see Figure 4)
is starting to form. Furthermore, the bottom 4 of the inner frame 4
b is provided with a drain port 14 that communicates with the drain channel 13, and this drain port 14 is connected to one end of a drain vibrator 15 attached to the base 2 via a connecting hose 16, and A base end of a drainage hose 17 is connected to the other end of the vibrator 15 . Reference numeral 18 denotes a hollow lid consisting of an outer plate 19 and an inner plate 20, which is pivoted to the upper opening of the main body 1 via a hinge portion 21 so as to be rotatable in the vertical direction. It is set up. Reference numeral 22 designates a water supply pipe as a water supply channel disposed inside the lid 18, the base end of which projects outside the lid 18 to form a connecting portion 22a, and the tip end directed downward at a substantially right angle. The mounting tube portion 20a is formed into a mounting tube portion 2''2b which is bent at the same time, and the ``tip end'' of the mounting tube portion 22b is provided to protrude into the center of the inner plate 20.
It is projected downward throughout. A tightening nut 23 is screwed into this mounting tube portion 20a, thereby tightening and fixing the attachment tube portion 22b to the inner plate 20 via a waterproof backing 24. (See Figure 2)
.

Note that 25 is a steam vent hole formed in the lid 18 so as to communicate between the inside and the outside. Further, one end of a water supply hose 26 is connected to the connecting portion 22a of the water supply vibrator 22, and the other end of the water supply hose 26 is connected to the water faucet 2, which is a water supply source.
It is connected to 7.

Reference numeral 28 denotes an inner lid that is removably attached to the upper opening of the pot 10 to close it, and has a steam vent hole 28a, and a presser member 29 is fitted and attached in the center. This presser member 29 is formed into a cylindrical shape from heat-resistant rubber or the like, and has an engagement stepped portion 2.9a that engages with the engagement protrusion 22C at the tip of the mounting tube portion 22b at its upper end. A pressed step portion 29b that is pressed by the tip portion is formed,
The lower end portion is formed into a tapered nozzle portion 29c whose diameter gradually decreases toward the bottom (see FIG. 2).

Reference numeral 30 denotes a circuit board disposed within the base 2, and a large number of electronic components 31 constituting a control circuit consisting of a microcomputer are attached to this circuit board. In FIG. 1, reference numeral 32 indicates the connection between the drain port 14 side and the circuit board 30 on the base 2.
A shielding wall integrally molded to separate the sides from each other; 33 is a standard electric heater that is a heat-retaining heater attached to the upper outer periphery of the peripheral side wall of the inner frame 4; An electric heater for the lid is attached as a heat-retaining heater, 35 is a heat-sensitive part attached to the outer surface of the center part of the bottom 4b of the inner frame 4 and has a built-in temperature sensor (not shown) such as a thermistor, and 36 is attached to the lid 18. A clamp member 37 is pivotally mounted on the handle 36 and holds the lid 18 in a closed state.
8 is a backing attached to the inner plate 20, and 39 is a power cord wire.

Next, the operation of this embodiment will be explained.

First, add the amount of unwashed rice that corresponds to the maximum amount of rice to the pot.
Further, the inner part 28 is placed on the back side of the open lid body 18, and the holding member 29 thereof is fitted and engaged with the mounting tube part 22b.

In this state, when the top opening of the main body 1 is closed by the lid 18 and the lid 18 is held in the closed state by the clamp member 37, the inner lid 28 closes the top opening of the pot 10 and the attachment The tip of the tube portion 22b presses the pressed step portion 29b of the presser member 29, and as a result, the presser member 29 presses the inner lid 28, and the peripheral edge of the inner lid 28 presses against the pot 1.
0 to the flange portion 10a.

When the water faucet 2-7 is opened, water from the faucet 27 is supplied to the water supply vibrator 22 via the water supply hose 26, and the water is received by the presser member 29 through the attachment pipe portion 22b. It comes to be supplied into the pot 10 from the nozzle portion 29c of the counting member 29. In this case, since the nozzle part 29c of the presser member 29 is formed in a tapered shape, the water from the nozzle part 29C becomes a jet stream with a high flow velocity, and the water flows into the pan 10.
It now collides with the rice stored in the pot 1.
Coupled with the fact that the diameter of the bottom part 10b gradually decreases toward the bottom part 10b, water convects from the top to the bottom and then from the bottom to the top as shown by the arrows in FIG. As the rice flows, the rice begins to be stirred, and the washing of the rice begins. By supplying water into the pot 10 in this manner, the water level in the pot 10 gradually rises, but when the water level reaches the lower edge of the overflow hole 11, the excess water overflows from the overflow hole 11 and flows inside. The overflow water flows down into the frame 4, flows down through the gap 12, passes through the drainage channel 13, reaches the drain port 14, and further flows through the connecting hose 16. Drainage vibrator 15 and drainage hose 17
is discharged to the outside of the main body 1 through. As a result, the dirt on the outer surface of the rice is washed off and washed away with the overflowing water. When such rice washing has been carried out for a predetermined time (for example, 5 minutes), the faucet 27 is closed to stop the water supply, thereby stopping the rice washing operation.

Thereafter, when the rice cooking operation section is operated to set the control circuit, the rice cooking electric heater 9 operates to generate heat based on the control of the control circuit. When the rice-cooking electric heater 9 operates to generate heat, the heating plate 6 is heated, thereby heating the small-diameter portion 4a and the bottom portion 4b of the inner frame 4. The lower part of the pot 10 that comes into contact (bottom 10
b) is heated, the water and rice in the pot 10 are heated, and rice cooking is started. After that, when the rice cooking is completed, the water in the pot 10 is almost gone, so the inner frame 4
Since the temperature of the bottom portion 4b of the rice cooker rises rapidly, the control circuit determines that rice cooking is complete based on a temperature detection signal from the temperature sensor of the heat sensing portion 35 that detects this, and stops the heat generation of the rice cooking electric heater 9. Thereafter, the control circuit causes the electric heater 33 and the electric heater 34 for the lid to generate heat to perform a heat-retaining operation.

Note that the position of the lower edge of the water overflow hole 11 in the pot 10 is set to the highest water supply level for the maximum amount of rice to be cooked, so in the case of the maximum amount of rice to be cooked, even if rice cooking is started immediately after washing the rice as described above, However, if the amount of rice to be cooked is less than that, the pot 10 is removed from the main body 1 after washing the rice to adjust the water level.

According to this embodiment, water from the faucet 27 is made to flow through the water supply vibrator 22 to the presser member 29 and is jetted into the pot 10 from the nozzle portion 29c. The dirt on the outer surface of the rice in the pot 10 is washed off, and the excess water in the pot 10 is drained from the overflow hole 11 to the gap 1.
2 and is discharged to the outside of the main body 1 through the drainage channel 13, the washed-off dirt is washed away by the running water, that is, the overflow water. In recent years, rice milling,
With improvements in storage technology, it has become increasingly known that commercially available non-glutinous rice only needs to be washed to remove dirt from its outer surface and does not need to be polished. According to the structure, the rice can be washed automatically with running water and does not require any effort from the user to wash the rice.Furthermore, unlike conventional methods, the outer surface of the rice is not scraped by sharpening, so nutrients are retained. can be secured.

In particular, according to this embodiment, water is supplied into the pot 10 through the tapered nozzle portion 29c formed on the presser member 29, so that water supplied into the pot 10 is supplied from the tap. Despite fluctuations in water pressure, the water always forms a jet and the pot 10
This stirs the rice inside, thus ensuring that dirt on the outer surface of the rice can be washed away.

By the way, in general, in rice cookers, the periphery of the inner lid is pressed against the flange of the top opening of the pot in order to prevent rice from spilling from the top opening of the pot while cooking and to keep the pressure inside the pot at an appropriate level. For this reason, conventionally, a holding member (the holding member 29 of this embodiment without the nozzle portion 29c) is attached to the inner lid and an engaging member is attached to the lid, and the engaging member is attached to the lid when the lid is closed. The inner cover is pressed by the member via the pressing member. On the other hand, in this embodiment, a presser member 29 having a nozzle portion 29c is mounted on the inner lid 28,
The attachment tube part 22b of the water supply pipe 22 is made to protrude from the lid body 18, and the water from the attachment tube part 22b is supplied into the pot 10 via the holding member 29. At the time of closing, the attachment pipe part 22b presses the presser member 29 to press the inner lid 28 to the flange part 10a of the pot 10 via the presser member 29. Therefore, the presser member 29 and the attachment pipe part 22b It has the same form as the conventional holding member and engagement protrusion.

That is, in this embodiment, the mounting pipe portion 22b and the holding member 29
This has both the function of bringing the inner lid 28 into pressure contact with the flange part 10a of the pot 10 and the function of supplying water into the pot 10, and can have a rational and simple structure that does not differ from the conventional one in terms of appearance.

FIG. 6 shows another embodiment of the present invention, which differs from the previous embodiment in that the presser member 29 is provided with a pressing member 40 that is pressed by the inner plate 20 when the lid 18 is closed. There is an advantage that the pressing force against the inner lid 28 can be made even larger.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, but can of course be implemented with appropriate modifications within the scope of the gist.

[Effects of the Invention] As explained above, the rice cooker of the present invention presses the holding member of the inner lid by the attachment pipe portion of the water supply channel when the lid body is closed, and presses the inner lid against the flange portion of the pot. Since the water from the water supply channel is supplied into the pot from the tapered nozzle part through the holding member, the rice can be washed automatically and reliably without requiring any labor. Nutrients can be secured without scraping off the outer surface of the rice during rice washing, and it is also streamlined because the mounting pipe and holding member have the function of pressing the inner lid and the function of supplying water into the pot. This has the excellent effect of making it possible to have a simple and practical structure.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of the present invention, with Figure 1 being an overall vertical sectional front view, Figure 2 being a longitudinal sectional front view of the main parts, Figure 3 being a perspective view of the pot, and Figure 4 is a partial sectional view of the inner frame and pot, No. 5
The figure is a sectional view of the pot with the inner lid attached, and FIG. 6 is a view corresponding to FIG. 2 showing another embodiment of the present invention. In the drawings, l is the main body, 2 is the base, 3 is the outer frame, 4 is the inner frame,
9 is an electric heater for cooking rice (heater for cooking rice), 10 is a pot, 1
0a is the flange part, 11 is the overflow hole, 13 is the drainage channel, 18
22 is a lid body, 22 is a water supply pipe (water supply channel), 22b is a mounting pipe portion, 28 is an inner lid, 29 is a holding member, 29. C indicates a nozzle part.

Claims (1)

[Claims] 1. A main body consisting of an outer frame and an inner frame, a lid pivotably mounted on the top opening of the main body to open and close the main body, and a lid provided to allow water from a water supply source to pass through the lid. a water supply channel having an attachment pipe portion protruding from the back side of the lid; a pot removably mounted within the inner frame, having a flange portion at the top opening and having an overflow hole at the top of the peripheral side wall; An inner lid is removably attached to the upper opening of the pot to close it, and a tapered nozzle portion is attached to the inner cover and projects toward the pot. a presser member that is pressed by a pipe portion to press the inner lid into contact with the flange portion of the pot and supplies water from the mounting pipe portion into the pot via the nozzle portion; A drainage channel is formed between the two to drain overflow water from the overflow hole of the pot to the outside of the main body, and a rice cooking heater is provided to heat the pot via the inner frame. A rice cooker.