JP6743574B2 - Rice washing equipment - Google Patents

Description

The present invention relates to a rice washing device.

In hotels, restaurants, restaurants, and other kitchens, automatic rice washing devices are used to efficiently cook large amounts of rice with stable quality.
As a conventional automatic rice washing device, rice washing (washing rice), washing rice washing container, washing water and drainage of washing water, measuring rice cooking water, washing rice and measuring rice cooking water It is known to automatically carry out the charging and other steps in accordance with a series of programs.

By the way, in actual rice cooking, before starting to cook rice, an immersion treatment is performed in which the rice is soaked in water for cooking so that the rice absorbs water. The time for this dipping treatment varies depending on the type of rice provided for cooking rice, such as glutinous rice, glutinous rice, new rice, old rice, domestic rice, and foreign rice, as well as the intended rice cooking state. If it is from 20 minutes to long, it is set to 1 hour or more.

When such a dipping process is performed in a rice cooking container, for example, the inner pot of a rice cooker, it goes without saying that the inner pot cannot be used for the rice cooking process during the dipping process.

Therefore, the rice dipping treatment has been performed in the rice washing container of the rice washing device, not in the inner pot of the rice cooker. According to such a method, it is possible to perform the dipping treatment of the rice to be cooked next in the rice washing container while using the inner pot for the preceding rice cooking treatment. Rice processing can be performed efficiently.

JP-A-8-238434

On the other hand, when the dipping treatment is performed using a rice washing container, the rice absorbs water, the epidermis swells, and the adhesiveness increases. For this reason, in the case of a rice washing container having a conical lower part and a structure in which the rice and cooking water are discharged from the outlet on the bottom, rice remains on the inner wall of the rice washing container, leaving behind residual rice. Was occurring.
With respect to this problem, the conventional rice washing apparatus employs a method in which a shower nozzle for injecting a part of the rice cooking water as residual rice runoff water is provided on the side wall inside the rice wash container, and the residual rice is washed off.

However, since the center of the shower nozzle faces downward in the above-mentioned conventional rice washing device and a part of the residual rice runoff water that is diffused and sprayed is sprayed on the sidewall of the rice washing container, There is a problem that the remaining rice run-off water may not be sufficiently sprayed onto the part, and there is a possibility that the ability to wash off the remaining rice may be insufficient.

In addition, the conventional rice washing device has a rice supply port on the top of the rice washing container, and the rice from the rice storage is supplied from the rice supply port into the rice washing container. There is also a problem that it is not possible to spray the remaining rice runoff water strongly or to the upper side wall of the rice washing container because it is necessary to prevent water from entering the rice storage from the rice supply port. ..

An object of the present invention is to provide a rice washing device that can more effectively rinse the inside of a rice washing container.

The invention according to claim 1 is a rice washing apparatus,
A rice washing container having a side wall along the peripheral surface and a discharge port formed at the bottom,
An injection water supply mechanism for supplying water into the rice washing container,
A stirring mechanism for rotating a stirring member provided in the rice washing container;
An outlet opening/closing mechanism for opening/closing the outlet of the rice washing container,
In a rice washing device provided with a control device for controlling the rice washing operation,
It is characterized in that the jet water supply mechanism has a jet nozzle that jets water in a direction along the circumference of the side wall portion of the rice washing container in plan view to form a vortex.
More specifically, the rice washing apparatus according to the present invention has a side wall portion along the peripheral surface and a rice washing container having a discharge port formed at the bottom, and an injection water supply mechanism for supplying water into the rice washing container. A rice washing apparatus comprising a stirring mechanism for rotating a stirring member provided in the rice washing container, an outlet opening/closing mechanism for opening/closing an outlet of the rice washing container, and a controller for controlling a rice washing operation, The injection water supply mechanism has an injection nozzle that forms a swirl by injecting water in a direction along the circumference of the side wall portion of the rice washing container in a plan view, and the injection water supply mechanism has three injection nozzles, It has two shower nozzles that supply water with a weaker water flow than the three injection nozzles, and the three injection nozzles inject water in a direction in which the swirl flow is formed in the same rotation direction, and the rice washing container. The water is sprayed in a range that extends to the upper end of the side wall portion.

The invention according to claim 2 is the rice washing device according to claim 1,
The injection water supply mechanism has a plurality of the injection nozzles,
The plurality of jet nozzles are characterized by jetting water in a direction in which the swirl flow is formed in the same rotation direction.
More specifically, the rice washing apparatus according to the present invention has a side wall portion along the peripheral surface and a rice washing container having a discharge port formed at the bottom, and an injection water supply mechanism for supplying water into the rice washing container. A rice washing apparatus comprising a stirring mechanism for rotating a stirring member provided in the rice washing container, an outlet opening/closing mechanism for opening/closing an outlet of the rice washing container, and a controller for controlling a rice washing operation, The injection water supply mechanism has an injection nozzle that forms a swirl by injecting water in a direction along the circumference of the side wall portion of the rice washing container in a plan view, and the injection water supply mechanism has three injection nozzles, It has two shower nozzles that supply water with a weaker water flow than the three injection nozzles, and the three injection nozzles inject water in a direction in which the swirl flow is formed in the same rotation direction, and the rice washing container. A water supply pipe for supplying purified water to the three spray nozzles and the two shower nozzles, and the water supply pipe is a source of purified water. To a supply path to each injection nozzle and a supply path to each shower nozzle, the supply path to each injection nozzle further branches to a supply path to each injection nozzle on the downstream side, and to each shower nozzle. In the downstream side, the supply path is branched into a supply path to each shower nozzle, and the end of the supply pipe is connected to each of the injection nozzles and each of the shower nozzles.

The invention according to claim 3 is the rice washing apparatus according to claim 1 or 2,
The spray nozzle sprays water in a range reaching the upper end of the side wall of the rice washing container.
More specifically, the rice washing apparatus according to the present invention has a side wall portion along the peripheral surface and a rice washing container having a discharge port formed at the bottom, and an injection water supply mechanism for supplying water into the rice washing container. A rice washing apparatus comprising a stirring mechanism for rotating a stirring member provided in the rice washing container, an outlet opening/closing mechanism for opening/closing an outlet of the rice washing container, and a controller for controlling a rice washing operation, The injection water supply mechanism has an injection nozzle that forms a swirl by injecting water in a direction along the circumference of the side wall portion of the rice washing container in a plan view, and the injection water supply mechanism has three injection nozzles, It has two shower nozzles that supply water with a weaker water flow than the three injection nozzles, and the three injection nozzles inject water in a direction in which the swirl flow is formed in the same rotation direction, and the rice washing container. A water supply pipe for supplying purified water to the three spray nozzles and the two shower nozzles, and the water supply pipe is a source of purified water. To a supply path to each injection nozzle and a supply path to each shower nozzle, the supply path to each injection nozzle further branches to a supply path to each injection nozzle on the downstream side, and to each shower nozzle. On the downstream side, a supply path to each shower nozzle is branched, and an end of the supply pipe is connected to each of the injection nozzles and the shower nozzles, and the supply pipe has a first electromagnetic field. Valve and a second solenoid valve are provided, and the first solenoid valve is provided on a downstream side of a branch position of a supply path to each of the injection nozzles and a supply path to each of the shower nozzles in the water supply pipe. Is provided on the upstream side of the branch position to the individual injection nozzles, and the second electromagnetic valve is a branch position of the supply path to each of the injection nozzles and the supply path to each of the shower nozzles in the water supply pipe. It is characterized in that it is provided on the more downstream side and on the upstream side of the branch position to the individual shower nozzles.

The invention according to claim 4 is the rice washing apparatus according to any one of claims 1 to 3,
It is characterized by comprising a shutter mechanism having a shutter for opening and closing a rice supply port for supplying rice from the rice storage into the rice washing container, and a drive unit for giving an opening/closing operation to the shutter.

The invention according to claim 5 is the rice washing apparatus according to claim 4,
The rice storage is disposed above the rice washing container.

The invention according to claim 6 is the rice washing apparatus according to any one of claims 1 to 5,
It is characterized in that the control device executes a cleaning control in which water is jetted by the jet nozzle of the jet water supply mechanism every time a prescribed repeating condition is satisfied.

According to the present invention, since the jet water supply mechanism has the jet nozzle that jets water in the direction along the peripheral surface of the side wall of the rice washing container in a plan view, a swirl flow can be formed inside the rice washing container. , It is possible to spread the water flow in a leak-free manner in the circumferential direction of the rice washing container, and it is possible to effectively drain away the highly adherent residual rice remaining in the rice washing container even after dipping and discharging. Become.
In addition, this also has the effect of effectively draining the residual rice even without strong spraying of the residual rice runoff water, so that the adhesion of moisture to the rice supply port and the moisture from the rice supply port to the rice storage Can be reduced.

Further, the present invention is provided with a shutter mechanism having a shutter for opening and closing a rice supply port for supplying rice from a rice storage into a rice washing container, and a shutter mechanism for providing an opening/closing operation to the shutter. It is possible to avoid the adhesion of water to the rice mouth and the invasion of water from the rice supply mouth into the rice storage, and it is possible to spray the remaining rice runoff water strongly and spray it onto the upper side wall of the rice washing container. Becomes
Therefore, it becomes possible to effectively wash away the residual rice with high adhesiveness remaining in the rice washing container. Further, even when the inside of the rice washing container is washed by spraying the spray nozzle, it is possible to effectively wash the inside of the rice washing container.

It is a longitudinal section showing the whole rice-washing device concerning this embodiment. It is a perspective view of the cylindrical part of a rice washing container. It is sectional drawing which followed the VV line in FIG. 1 of a rice washing container. It is sectional drawing along the WW line in FIG. 3 of a rice washing container. It is a block diagram which shows the control system of a rice washing apparatus. It is a flow chart which shows rice washing operation control which a CPU of a control device performs according to a program. It is a flow chart which shows cleaning control which CPU of a control device performs according to a program.

[Overall configuration of rice washing equipment]
Hereinafter, the rice washing apparatus 1 which is an embodiment of the present invention will be specifically described. FIG. 1 is a vertical sectional view showing the entire rice washing apparatus 1.
As shown in FIG. 1, the above-described rice washing apparatus 1 includes a frame 10 that supports the entire structure, a rice washing container 20 that performs rice washing inside, and an injection water supply mechanism 30 that supplies water into the rice washing container 20 (see FIG. 4). A stirring mechanism 40 for rotating stirring members 42 to 44 provided in the rice washing container 20, a discharge port opening/closing mechanism 50 for opening/closing a discharge port 21 located at the bottom of the rice washing container 20, and a rice washing container 20 to be described later. A shutter mechanism 60 that opens and closes the rice supply port 22, a rice supply mechanism 70 that has a rice storage 71 that stores rice for washing rice, a rice cooker 90 that receives and cooks rice after washing, and a series of rice washing operations. And a control device 100 (see FIG. 5) that controls the above.

Note that, in FIG. 1, the rice washing apparatus 1 is in a state in which its front portion is directed to the front side of the paper surface. In the following description, as shown in FIG. 1, the left side in FIG. , The upper side is the “upper” side, the lower side is the “lower” side, the front side of the paper in FIG. 1 is the “front” side, and the back side of the paper is the “rear” side.

[flame]
The frame 10 includes a base 11 located at the bottom, two columns 12 standing from the rear ends on the left and right sides of the platform 11, and a rectangular casing fixedly supported on the front side of the upper portions of the two columns 12. It is mainly composed of a body portion 13.
The base 11 is provided with a slide plate 14 that can slide forward and backward, and the rice cooker 90 is placed and supported on the slide plate 14.
Further, the housing 13 is hollow inside, and the rice supplying mechanism 70 is stored and held in the upper inside thereof. The bottom plate of the casing 13 is also used as the top plate 23 of the rice washing container 20, and the stirring mechanism 40, the discharge opening/closing mechanism 50, and the shutter mechanism 60 are provided in the space between the rice supplying mechanism 70 and the bottom plate. A part of the configuration such as is stored.
Although not shown, the front surface of the housing 13 is equipped with the circuit board of the control device 100, the operation panel 105, and the like.

[rice cooker]
The rice cooker 90 includes an inner pot 91 for internally cooking washed rice, a heating unit 92 for storing and heating the inner pot 91, and a lid (not shown) for the inner pot 91, which is arranged directly below the rice washing container 20. To be done.
The inner pot 91 is a pot-shaped heat-resistant container whose upper part is wide open, and has a heat insulating structure with double wall surfaces.
The lid of the inner pot 91 is in the shape of a disc that closes the open portion of the upper part of the inner pot 91, and a handle is provided at the center of the upper surface. During rice cooking, the upper open portion of the inner pot 91 can be closed to seal the inside, and the inside of the inner pot 91 can be maintained at a constant pressure.
This lid may be opened and closed manually by a handle, but an arm mechanism for locking or grasping the handle is provided above the rice cooker 90 in the frame 10, and the lid is opened and closed under the control of the control device 100. May be configured to be automatically performed.
The heating unit 92 of the rice cooker 90 has a structure in which the inner pot 91 is housed and the bottom is heated, and the heat source thereof may be combustion of combustible gas or electric power.

[U.S.A. mechanism]
The rice supply mechanism 70 mainly includes a rice storage 71 and a weighing unit 74 that supplies a fixed amount of rice from the rice storage 71 to the rice washing container 20.
The rice storage 71 is a hollow container capable of storing rice, and its bottom portion 72 is formed of an inclined surface that concentrates the rice in one place by gravity. The rice concentration point on the bottom 72 of the rice storage 71 is connected to the outlet pipe 73 extending downward.

The measuring portion 74 is formed in a middle portion of the lead-out tube 73 and has a bulging portion 75 that bulges in a circular shape in a front view, and is rotatably supported in the bulging portion 75 about an axis along the front-rear direction. The measuring container 76, the measuring motor 77 as a drive source for rotating the measuring container 76, and a transmission mechanism (not shown) for transmitting the torque of the measuring motor 77 to the measuring container.

The weighing container 76 is a cylindrical hollow container that is in sliding contact with the inner surface of the bulging portion 75 with almost no gap, and an opening is formed by cutting a part of the peripheral wall thereof. When the opening of the weighing container 76 faces upward under the control of the weighing motor 77, a certain amount of rice in the rice storage 71 flows in according to the volume (for example, one set) of the weighing container 76, and the weighing motor When the opening of the weighing container 76 faces downward under the control of 77, the rice in the weighing container 76 is put into the rice washing container 20 through the outlet pipe 73.
With the above structure, the weighing unit 74 can supply the rice washing container 20 with rice one by one.

[Rinsing container]
2 is a perspective view of the cylindrical portion 24 of the rice washing container 20, and FIG. 3 is a sectional view taken along the line VV in FIG.
As shown in FIGS. 1 to 3, the rice washing container 20 includes a cylindrical portion 24 located at an upper portion, an inverted truncated cone-shaped conical portion 25 located at a lower portion, and a top plate 23 that closes an upper end portion of the cylindrical portion 24. (The bottom plate of the casing 13 described above) is provided, and the cylindrical portion 24 and the conical portion 25 are integrally formed.
The cylindrical portion 24 has a constant outer diameter and inner diameter along the vertical direction.
The outer diameter and inner diameter of the conical portion 25 are the same as the outer diameter and inner diameter of the cylindrical portion 24, and the elevation angle (the inner angle between the lower end of the outer peripheral surface of the conical portion 25 and the horizontal surface) is approximately 50°. The diameter decreases as it goes downward.
As a result, the rice washing container 20 has a rotating body shape around the central axis along the vertical direction.

The cylindrical portion 24 and the top plate 23 can be separated.
A flange portion 241 protruding outward is formed on the upper edge of the cylindrical portion 24, and the flange portion 241 is held by the top plate 23 by a plurality of holding members 231.
The holding member 231 has a long hole formed therein and is fastened to the top plate 23 by a bolt (not shown) inserted through the long hole. When the bolt is loosened, the holding member 231 can move along the elongated hole, and by moving the holding member 231 to the outside of the flange portion 241, the cylindrical portion 24 and the top plate 23 can be separated. In addition, the holding member 231 is moved inward in the radial direction of the flange portion 241 along the elongated hole, the flange portion 241 is sandwiched between the holding member 231 and the top plate 23, and bolts are fastened to form a cylinder. The part 24 and the top plate 23 can be connected.
A packing (not shown) is provided on the upper surface of the flange portion 241 of the cylindrical portion 24, and when the cylindrical portion 24 and the top plate 23 are connected to each other, they can be kept watertight.
As described above, since the cylindrical portion 24 and the top plate 23 can be separated from each other, it is possible to easily wash the rice washing container, which has been difficult in the past, and it is possible to wash every corner of the inside.

A rectangular work window 243 communicating with the inside is formed on the front side of the outer peripheral surface of the cylindrical portion 24, and the work window 243 is equipped with an opening/closing door 242 made of a transparent material. The opening/closing door 242 has one end rotatably supported on the outer peripheral surface of the cylindrical portion 24 by a hinge, and can be opened and closed by rotation. A hook that keeps the open/close door 242 closed is provided at the other end of the open/close door 242.
The opening/closing door 242 is also equipped with packing (not shown), and when the opening/closing door 242 is closed, the work window 243 can be kept watertight.
In this way, by providing the working window 243, the inside of the rice washing container 20 can be accessed without separating the cylindrical portion 24 of the rice washing container 20 from the top plate 23, and normal washing work and maintenance work can be performed. It is possible to do.

At the lower end of the conical portion 25 of the rice washing container 20, a drainage wire net 26, which is an inverted truncated cone-shaped perforated plate having a large number of water passage holes, is connected and provided. Then, the lower end portion of the drainage wire net 26 is circularly opened.
A drainage jacket 51 (described later) of the outlet opening/closing mechanism 50 is provided around the drainage wire mesh 26 so as to surround the drainage wire mesh 26, and drainage after washing rice is performed from the drainage wire mesh 26 through the drainage jacket 51. Be seen.
In addition, a drain port 21 is formed at the bottom of the drainage jacket 51 to drain the rice after washing and the cooking water.

The top plate 23 has a through hole 232 formed at a central position of the rice washing container 20 through which a rotation shaft 41 (described later) of the stirring mechanism 40 passes. A bearing and packing (not shown) are interposed between the through hole 232 and the rotary shaft 41 to prevent moisture from entering the upper side of the top plate 23.
Further, around the through hole 232 on the lower surface side of the top plate 23, three jet nozzles 31 (described later) of the jet water supply mechanism 30 are radially arranged at uniform angular intervals.
Further, a rice supply port 22 penetrating vertically is formed at a position directly below the outlet pipe 73 of the rice supply mechanism 70 on the top plate 23, and the rice cleaning mechanism 20 passes through the rice supply mechanism 70 through the rice supply port 22. Rice is supplied inside.

[Agitation mechanism]
The stirring mechanism 40 penetrates the center of the top plate 23 of the rice washing container 20, and is rotatably supported by a hollow rotary shaft 41 via a bearing and packing (not shown), and is fixed radially at the lower end of the rotary shaft 41. It is equipped with the stirring members 42-44 equipped and the drive part 45 which rotates the stirring members 42-44 via the rotating shaft 41.

The lower end of the rotary shaft 41 is located in the internal space of the rice washing container 20, and the upper end thereof extends above the top plate 23. Since the top plate 23 is supported via packing, watertightness between the top and bottom of the top plate 23 is maintained.

The respective stirring members 42 to 44 are arranged at uniform angular intervals in the circumferential direction around the rotation shaft 41. Each stirring member 42 to 44 extends radially outward from the rotary shaft 41, is bent vertically downward from the middle, and the bent lower portion is on the inner peripheral surface of the conical portion 25 of the rice washing container 20. When approaching, it bends in the inclination direction so as to follow the inclination of the inner peripheral surface. Further, in each of the stirring members 42 to 44, the length of the inclined portion following the inner peripheral surface of the conical portion 25 is individually different and the height of the lower end portion is also different. The lower end of at least one of the stirring members 42 to 44 extends to the vicinity of the bottom of the rice washing container 20 (the lower end of the drainage wire mesh 26).
The number of the stirring members 42 to 44 is not limited to three and may be increased or decreased.

The drive unit 45 includes a stirring motor 451 (see FIG. 5) that serves as a drive source for the rotating shaft 41, and a known transmission mechanism that transmits the torque of the stirring motor 451 to the upper end of the rotating shaft 41. A gear mechanism or the like is suitable as the transmission mechanism.

[Discharge port opening/closing mechanism]
As shown in FIGS. 1 to 3, the outlet opening/closing mechanism 50 is connected to the drainage jacket 51 provided around the drainage wire mesh 26 located at the lower end of the rice washing container 20 and the drainage pipe 51 via the drainage pipe 52. Lower drain box 53, an upper drain box 54 communicating with the internal space of the rice washing container 20 at a predetermined height, a connecting pipe 55 connecting the upper drain box 54 and the lower drain box 53, and the lower drain box 53 The drainage motor 56 (see FIG. 5) that opens and closes the opening/closing valve provided at the inlet of the drainage pipe 52, the opening/closing plug 57 that opens/closes the discharge port 21 of the rice washing container 20, and the opening/closing operation is transmitted to the opening/closing plug 57. The support rod 58 and the drive unit 59 that gives the opening/closing plug 57 an opening/closing operation.

The drainage jacket 51 includes a peripheral wall portion that surrounds the periphery of the drainage wire mesh 26 and a bottom surface portion, and is connected to the lower end portion of the conical portion 25 of the rice washing container 20 in a watertight state.
A discharge port 21 is formed at the center of the bottom surface of the drainage jacket 51, and the opening/closing plug 57 can be closed at the discharge port 21 via packing (not shown).
From this drainage jacket 51, unnecessary water for washing rice and water for washing the rice washing container 20 are drained to the lower drainage box 53 through the drain pipe 52, and the water for washing rice and rice for washing rice are washed through the discharge port 21 of the rice cooker 90. It is discharged to the inner pot 91.

When the upper drainage box 54 is filled with water in the rice washing container 20 up to a predetermined height, the overflowing water flows in and is sent to the lower drainage box 53 via the connection pipe 55.
The lower drainage box 53 is provided with a decompression blower 531 (see FIG. 5), and the internal space thereof can be decompressed to positively draw the water in the drainage jacket 51 and the upper drainage box 54. A hose 532 for draining the rice to the outside of the rice washing apparatus 1 is connected to the bottom of the lower drainage box 53, and all the water in the lower drainage box 53 can be drained to the outside of the apparatus by the hose 532.

The opening/closing plug 57 has a truncated cone shape that can be fitted into the lower end of the drainage wire mesh 26 and the discharge port 21 of the drainage jacket 51 from below, and the lower end of the support rod 58 is inserted into the center of the support 57. It is hung and supported by a rod 58.
The support rod 58 is supported so as to be vertically movable while penetrating the center of the hollow rotating shaft 41 of the stirring mechanism 40 described above. A packing (not shown) is also provided between the support rod 58 and the rotary shaft 41 to ensure watertightness between them.

The upper end of the support rod 58 extends above the upper end of the rotating shaft 41, and a pin 581 extending outward in the radial direction is provided at the upper end, and the drive unit 59 causes the pin 581 to extend. The opening/closing plug 57 is opened/closed via.
The drive unit 59 is not limited as long as it has a drive source that moves the pin 581 up and down. For example, a vertical movement operation may be input to the pin 581 by a motor and a cam mechanism, or a linear motion actuator. A vertical movement operation may be input to the pin 581 with. Here, an example is shown in which an opening/closing motor 591 (see FIG. 5) is used as a drive source, and the pin 581 is moved up and down via a cam mechanism (not shown).

[Injection water supply mechanism]
FIG. 4 is a sectional view taken along line WW in FIG. As shown in FIGS. 3 and 4, the spray water supply mechanism 30 supplies water with three spray nozzles 31 arranged on the lower surface side of the top plate 23 in the rice washing container 20, and a water flow weaker than the spray nozzle 31. One shower nozzle 35, each injection nozzle 31 and a water supply pipe 32 that supplies purified water to each shower nozzle 35, a first solenoid valve 33 that switches supply and stop of purified water to each injection nozzle 31, and each shower A second electromagnetic valve 36 that switches between supplying and stopping the purified water to the nozzle 35 and a flow meter 34 that detects the supply amount of the purified water supplied to each injection nozzle 31 and each shower nozzle 35 are provided.

The water supply pipe 32 is disposed on the top plate 23, and is branched into a supply path from the purified water supply source to each injection nozzle 31 and a supply path to each shower nozzle 35, and the supply path to each injection nozzle 31 is further divided. The supply path to each of the injection nozzles 31 is branched on the downstream side, and the supply path to the shower nozzle 35 is also branched to the supply path to each shower nozzle 35 on the downstream side.
Further, the end of the water supply pipe 32 penetrates the top plate 23 and is connected to each jet nozzle 31 and each shower nozzle 35. These penetrating portions are sealed by packing.
The flow meter 34 is provided on the upstream side of the branch position of the supply path to each of the injection nozzles 31 in the water supply pipe 32 and the supply path to each of the shower nozzles 35. Alternatively, the amount of purified water supplied to all the shower nozzles 35 is detected.

The first solenoid valve 33 is located on the downstream side (injection nozzle 31 side) from the branch position of the supply path to each injection nozzle 31 and the supply path to each shower nozzle 35 in the water supply pipe 32 and is connected to each injection nozzle 31. It is provided on the upstream side of the branch position, and can switch supply and cutoff of purified water to all the injection nozzles 31 at the same time.

The second solenoid valve 36 is located on the downstream side (on the side of the shower nozzle 35) from the branch position of the supply path to each of the injection nozzles 31 and the supply path to each of the shower nozzles 35 in the water supply pipe 32, and to the individual shower nozzles 35. It is provided on the upstream side of the branch position, and can switch supply and cutoff of purified water to all the shower nozzles 35 at the same time.
The water supply pipe 32 is connected to a water pipe through a water purifier (not shown), and purified water is supplied by the water pressure in the water pipe. However, even if a water purification tank is provided and water pressure is added to the water pipe 32, good.

Each of the spray nozzles 31 rinses water for washing the inside of the rice washing container 20 and residual rice runoff water that drains the remaining rice after discharging the rice into the inner pot 91 of the rice cooker 90 after dipping (it becomes the cooking water as it is). ) Is supplied into the rice washing container 20.
Each of the shower nozzles 35 is used when supplying the washing water for washing rice, the supplemental water for rice cooking described below, and the immersion water for dipping rice after washing (which becomes the rice cooking water as it is) into the washing rice container 20. It
That is, the above-mentioned water for washing rice, water for supplementing rice, water for washing, water for soaking, and water for removing residual rice are all purified water supplied from the same supply, although they have different uses.

Each spray nozzle 31 sprays purified water by diffusing at a constant angle with reference to a constant centerline direction. In FIG. 3 and FIG. 4, the center line of the injection of the injection nozzle 31 is shown by a chain line C, and the injection range by diffusion is shown by a dotted line D. The direction of the center line C of the ejection nozzle 31 is the ejection direction of the ejection nozzle 31.
As shown in FIG. 4, each of the injection nozzles 31 has a center line C that is horizontal when viewed from a horizontal line of sight, and performs injection by vertically diffusing within a range of an angle θ. Since the spray nozzle 31 sprays from the vicinity of the lower surface of the top plate 23, the spray range is a range including the upper end of the inner peripheral surface of the cylindrical portion 24 which is the side wall of the rice washing container 20. It should be noted that the center line C may be oriented so as to be inclined downward rather than horizontal as long as it is within a range including the upper end portion of the inner peripheral surface of the cylindrical portion 24.

Further, as shown in FIG. 3, each jet nozzle 31 is arranged inside the cylindrical portion 24 of the rice washing container 20 and outside the center thereof in plan view, and the center line of each jet nozzle 31. The direction of C is oriented along the inner peripheral surface of the cylindrical portion 24 serving as the side wall portion of the rice washing container 20.
Specifically, it is a direction that is inclined in a direction along the inner peripheral surface of the cylindrical portion 24 with respect to the radial direction R of the cylindrical portion 24 that is perpendicular to the inner peripheral surface of the cylindrical portion 24. That is, the direction of the center line C of the jet nozzle 31 is oriented so as to be inclined by the angle α with respect to the radial direction R (0°<α<90°). It is desirable that the angle α be closer to 90°. In this way, when the direction of the center line C of the spray nozzle 31 is tilted, the sprayed purified water causes a flow along the circumference of the inner peripheral surface of the cylindrical portion 24, forming a vortex in the rice washing container 20. You can
In addition, although the injection nozzle 31 is arrange|positioned in FIG. 3 in the direction which produces a counterclockwise vortex in the rice washing container 20 seeing from below, all three injection nozzles 31 produce the same counterclockwise vortex. It is the direction that causes it. It should be noted that all of these injection nozzles 31 may be turned clockwise.
Further, the diffusion angle θ of the spray nozzles 31 is set such that the range where the purified water is sprayed by the diffusion of the three spray nozzles 31 does not create a gap around the entire circumference of the cylindrical portion 24 of the rice washing container 20.

As a result, each of the spray nozzles 31 sprays cleaning water for cleaning the inside of the rice washing container 20 and drains the remaining rice after discharging the rice into the inner pot 91 of the rice cooker 90 to drain the remaining rice draining water. In the case of spraying, the washing water and the residual rice runoff water flow down from the cylindrical portion 24 to the conical portion 25 in the rice washing container 20 while forming a vortex along these inner peripheral surfaces. Dirt and residual rice can be washed off efficiently and effectively.
Further, the range where the purified water is sprayed by the diffusion of the three injection nozzles 31 extends over the entire circumference of the cylindrical portion 24 of the rice washing container 20 and reaches the upper end portion of the cylindrical portion 24. Spraying can be performed over the entire range of No. 25 without leakage, and it is possible to effectively reduce stains and residual rice remaining in the container after spraying.

Each shower nozzle 35 has innumerable discharge holes formed on a discharge plane facing vertically downward, and discharges purified water downward while spreading at a constant angle.
It suffices that the shower nozzle 35 can supply purified water into the rice washing container 20, so that it is not necessary to strongly inject it like the injection nozzle 31, and the purified water is discharged so as to drop downward exclusively.

[Shutter mechanism]
The shutter mechanism 60 includes a shutter 61 that opens and closes the rice supply port 22 formed on the top plate 23 of the rice washing container 20, and a drive unit 62 that gives an opening/closing operation to the shutter 61.
The shutter 61 is a shielding plate of the rice supply port 22 supported on the lower surface of the top plate 23 so as to be slidable in a predetermined direction, and a packing (not shown) is interposed between the shutter 61 and the lower surface of the top plate 23. The watertight structure prevents moisture from entering the rice supply port 22 upward.

The drive unit 62 is composed of a linear motion system actuator arranged on the upper surface side of the top plate 23, or a shutter opening/closing motor 621 (see FIG. 5) and a motion transmission mechanism that converts the torque of the motor into a linear motion. It The shutter opening/closing motor 621 is arranged so that the operation direction of the operation transmitting mechanism that performs a linear motion and the opening/closing operation direction of the shutter 61 coincide with each other, and the operation transmitting mechanism is connected to one end of the shutter 61.
The shutter opening/closing motor 621 is controlled by the control device 100 to open the shutter 61 only when rice is supplied from the rice supplying mechanism 70 into the rice washing container 20.

[Control system of rice washing device: control device]
FIG. 5 is a block diagram showing the control system of the rice washing apparatus 1.
As shown in FIG. 5, the controller 100 of the rice washing apparatus 1 includes a ROM (Read Only Memory) 102 in which a program for controlling the operation of rice washing is stored, and a RAM (Random Access) serving as a work area for arithmetic processing. Memory) 103, a rewritable nonvolatile data memory 104 as a storage unit that stores various setting data, and a CPU 101 (Central Processing Unit) that executes programs in the ROM 102.

Further, the CPU 101 includes the first and second electromagnetic valves 33 and 36 of the injection water supply mechanism 30, the stirring motor 451 of the stirring mechanism 40, the decompression blower 531 of the discharge opening/closing mechanism 50, the drainage motor 56 and the opening/closing motor 591, and the shutter. The shutter opening/closing motor 621 of the mechanism 60 and the weighing motor 77 of the rice supplying mechanism 70 are connected via the respective drive circuits 33a, 36a, 451a, 531a, 56a, 591a, 621a, 77a, and the operation of these actuators. Take control.

Further, the CPU 101 is connected to the heating unit 92 of the rice cooker 90 via a control circuit 92a that controls the start and stop of rice cooking, and controls the execution of rice cooking.
Further, the CPU 101 is connected to the flow meter 34 of the injection water supply mechanism 30 via the interface 34a, and acquires the detected injection amount of purified water by the injection water supply mechanism 30.

Further, the CPU 101 is connected to the operation panel 105 via the interface 105a.
This operation panel 105 is used to set various settings related to washing rice and cooking rice (for example, amount of rice, type of rice, water addition/decrease, immersion time of rice, cooking method, steaming time after cooking rice, number of times of continuous automatic operation). It is provided with an input unit for performing, a start switch for inputting the start of rice washing and rice cooking, a buzzer for notifying completion of rice cooking, a display unit for displaying various setting contents, and the like.

[Operation control of washing rice]
A series of operation control from rice washing to rice cooking of the rice washing apparatus 1 executed by the CPU 101 according to the control program will be described based on the flowchart of FIG.
It should be noted that the amount of rice to be washed and cooked, the type of rice, the degree of water addition, the washing (grinding) time, the dipping time, the cooking method, the steaming time, etc. are set beforehand by the operation panel 105 as appropriate.

When the operation start is input from the operation panel 105, the CPU 101 first executes the weighing of rice (step S1).
That is, the CPU 101 controls the shutter opening/closing motor 621 of the shutter mechanism 60 to move the shutter 61 to the open position and open the rice supply port 22.
Next, the weighing motor 77 of the rice feeding mechanism 70 is driven to direct the opening of the weighing container 76 upward, and the rice in the rice storage 71 is stored inside. Then, the weighing motor 77 is driven again to direct the opening of the weighing container 76 downward. As a result, a set of rice is supplied to the washed rice container 20.
Then, the supply of rice to the rice washing container 20 is repeatedly performed a plurality of times according to the set amount of rice to be cooked.
Further, when the supply of the specified amount of rice is completed, the CPU 101 controls the shutter opening/closing motor 621 to move the shutter 61 to the closed position, and closes the rice supply port 22.

Next, the CPU 101 executes the injection of washing water for washing rice (step S3).
The specified amount of washing water is determined according to the type and amount of rice. However, if the amount of adjustment is set in advance from the operation panel 105, the amount of adjustment is set to the specified amount. Make adjustments based on
Then, the second electromagnetic valve 36 of the jet water supply mechanism 30 is opened, and the injection of the cleaning water from each shower nozzle 35 is started. At the same time, the CPU 101 integrates the flow rates detected by the flow meter 34, and when the target water injection amount is reached, the second electromagnetic valve 36 is closed and the water injection is completed.

Next, the washing of the rice in the rice washing container 20 is started (step S5).
That is, the CPU 101 starts driving the stirring motor 451 of the stirring mechanism 40 and starts measuring the set rice washing time. When the washing time has elapsed, the CPU 101 stops the stirring motor 451 and ends the rice washing.

Then, the washing water is drained from the rice washing container 20 (step S7).
That is, the CPU 101 controls the drain motor 56 of the discharge opening/closing mechanism 50 to open the opening/closing valve. As a result, the washing water in the rice washing container 20 is drawn from the drainage jacket 51 to the lower drainage box 53 through the drainage pipe 52 and drained from the hose 532 to the outside of the apparatus.

Next, the water supply for immersion in the rice washing container 20 is performed (step S9).
That is, the CPU 101 controls the drain motor 56 of the discharge opening/closing mechanism 50 to close the opened opening/closing valve, open the second electromagnetic valve 36 of the injection water supply mechanism 30, and soak the water from each shower nozzle 35. Start water supply. At the same time, the CPU 101 integrates the detected flow rates of the flow meter 34, and when the target water supply amount is reached, the second electromagnetic valve 36 is closed and the water supply is completed.

Immersion water is water for preliminarily absorbing water before cooking rice, and is used as it is after cooking for a specified time as cooking water.
However, not all the appropriate amount of water for cooking rice is supplied as water for immersion, but the minimum amount necessary for immersion is supplied. In this case, all of the rice in the rice washing container 20 has a necessary minimum amount capable of maintaining the submerged state even if the water content is reduced due to absorption during immersion.
Since this amount varies depending on the amount and type of rice and the setting of the cooking method, when these are set by the operation panel 105, the CPU 101 of the control device 100 causes the CPU 101 of the controller 100 to determine an appropriate amount of data. Automatically determined from.

Next, the rice in the rice washing container 20 is immersed (step S11).
The time required for soaking varies depending on the amount and type of rice and the setting of the cooking method, so the CPU 101 automatically determines the appropriate soaking time according to these parameters and automatically determines the soaking time. Monitor the passage of time.

When the immersion time elapses, the second electromagnetic valve 36 of the jet water supply mechanism 30 is opened, and the supplementary water for cooking rice is supplied from each shower nozzle 35 (step S12).
At the time of dipping, the dipping water is set to the minimum amount as described above, so that it is not enough for the rice cooking water. In addition, after the rice is discharged from the rice washing container 20 to the rice cooker 90, the remaining rice runoff water is jetted by the jet nozzle 31, and the remaining rice runoff water also becomes part of the rice cooker water. The water absorption of is calculated from the following equation.
[Cooking water] = [Immersion water]-[Absorbed amount during immersion] + [Replenishing water for cooking rice] + [Water for draining leftover rice]

Then, the rice in the rice washing container 20 is discharged (step S13).
That is, the CPU 101 controls the opening/closing motor 591 of the outlet opening/closing mechanism 50 to move the opening/closing plug 57 downward to open the outlet 21.
As a result, the immersion water and rice are discharged from the opened discharge port 21 and are put into the inner pot 91 of the rice cooker 90 below.

Next, the residual rice in the rice washing container 20 is discharged (step S15).
That is, the CPU 101 opens each electromagnetic valve 33 of the injection water supply mechanism 30 and starts the injection of the remaining rice runoff water from each injection nozzle 31. At the same time, the CPU 101 integrates the flow rates detected by the respective flow meters 34, totalizes them, and when the target injection amount is reached, closes the respective solenoid valves 33 and completes the injection.
As described above, each of the injection nozzles 31 injects the remaining rice runoff water in the same rotation direction with respect to the inner peripheral surface of the cylindrical portion 24 of the rice washing container 20, and thus the inner peripheral surface of the cylindrical portion 24. Eddy current is generated along the circumference of, the remaining rice runoff water is sprayed over the entire area including the upper end of the inner peripheral surface of the cylindrical portion 24 and the lower surface of the top plate 23, and the residual rice is effectively washed away, It is discharged to the inner pot 91 of the rice cooker 90.

As described above, the remaining rice runoff water is used as part of the rice cooking water.
Since the required amount of residual rice runoff water varies depending on the amount of rice and the immersion time, when these are set by the operation panel 105, the CPU 101 of the control device 100 determines an appropriate amount according to these parameters. Automatically determined from the data obtained.

Next, rice is cooked by the rice cooker 90 (step S17).
As described above, when the rice washing apparatus 1 is provided with the arm mechanism, the actuator serving as a drive source thereof is controlled to perform the operation of covering the inner pot 91 with the arm holding the lid. When the arm mechanism is not installed, for example, the speaker of the operation panel 105, an instruction lamp, or the like may be used to close the lid of the inner pot 91 to the user of the rice washing apparatus 1. Output instructions.
Then, the CPU 101 controls the heating unit 92 of the rice cooker 90 to start cooking rice. Since the time required for cooking rice varies depending on the amount and type of rice and the setting of the cooking method, the CPU 101 automatically determines an appropriate cooking time according to these parameters and automatically determines the rice cooking time. Monitor the passage of time.

Then, when the rice cooking time elapses, the CPU 101 stops heating by the heating unit 92 of the rice cooker 90 and shifts to steaming (step S19).
Since the time required for steaming varies depending on the amount and type of rice and the setting of the cooking method, the CPU 101 automatically determines the appropriate steaming time according to these parameters and automatically determines the steaming time. Monitor the passage of time.

As described above, when the rice washing apparatus 1 is provided with the arm mechanism, the actuator serving as the drive source is controlled to hold the lid of the inner pot 91, and the operation of opening the lid by the arm is executed. When the arm mechanism is not installed, for example, the speaker of the operation panel 105, an instruction lamp, or the like may be used to open the lid of the inner pot 91 to the user of the rice washing apparatus 1. Output instructions.
With these, a series of operation control of rice washing is completed.

[Cleaning control]
The CPU 101 removes the execution of the rice washing operation and executes the washing control of the inside of the rice washing container 20 based on a predetermined repeated condition. FIG. 7 is a flowchart of cleaning control.
Here, as a predetermined repeating condition, a case where the cleaning is repeatedly performed every time a predetermined prescribed time elapses will be exemplified.

First, when the main power source of the rice washing apparatus 1 is turned on, the CPU 101 starts measuring a prescribed time of the washing cycle (step S31).
Then, the elapse of the specified time is determined (step S33). If the stipulated time has not elapsed, the stipulated time is continuously counted (step S33: NO), and if the stipulated time has elapsed (step S33: YES), whether or not the rice washing operation is currently being performed in the rice washing apparatus 1 is determined. Is determined (step S35).
Then, if the rice washing operation is being executed, the determination in step S35 is repeated (step S35: YES). If the rice washing operation is not being executed (step S35: NO), the inside of the rice washing container 20 is washed (step S37). ..

That is, the CPU 101 opens the first electromagnetic valve 33 of the injection water supply mechanism 30 and starts the injection of cleaning water from each injection nozzle 31. At the same time, the CPU 101 integrates the detected flow rates of the respective flow meters 34, and when the total is reached to reach the target injection amount, the first electromagnetic valve 33 is closed and the cleaning is completed.
The amount of cleaning water may be a preset constant amount or may be set to an arbitrary amount on the operation panel. The CPU 101 of the control device 100 executes cleaning according to the preset amount of cleaning water stored in advance.
After that, the process is returned to step S31, and the measurement of the specified time of the cleaning cycle is started again. This repeated processing is continued until the main power of the rice washing device 1 is turned off.

The predetermined repeating condition is not limited to the elapse of the specified time. For example, the washing control may be executed when a certain number of times of performing the washing operation is reached. Alternatively, the amount of washed rice may be counted, and the washing control may be executed when a certain amount is reached.

[Technical effects of rice washing equipment]
In the above-described rice washing apparatus 1, the jet water supply mechanism 30 has the jet nozzle 31 for jetting water in the direction along the inner circumference of the cylindrical portion 24 of the rice washing container 20 in a plan view. A vortex can be formed inside the rice washing container 20, and the remaining rice runoff water can be spread in a leak-free manner in the circumferential direction of the rice washing container 20, and remains in the rice washing container 20 even after being immersed and discharged. It is possible to effectively drain residual rice. Further, also when cleaning the inside of the rice washing container 20, it becomes possible to perform effective cleaning by the vortex flow.
In particular, the jet water supply mechanism 30 has a plurality of jet nozzles 31, and the plurality of jet nozzles 31 are arranged so as to jet water in a direction in which a swirl flow is formed in the same rotation direction, so that it is more powerful. Can form a swirl flow, the residual rice can be more effectively drained off, and the rice washing container can be more effectively washed.

In addition, the spray water supply mechanism 30 is arranged so that the plurality of spray nozzles 31 spray water in a range extending to the upper end portion of the inner peripheral surface of the cylindrical portion 24 of the rice washing container 20, so that the rice washing container 20 is almost the same. The remaining rice can be washed off and the inside of the rice washing container 20 can be washed over the entire area.

In particular, the rice washing apparatus 1 has a shutter mechanism that has a shutter 61 that opens and closes the rice supply port 22 that supplies rice from the rice storage 71 into the rice washing container 20, and a drive unit 62 that opens and closes the shutter 61. Since 60 is provided, even when water is sprayed to a high position in the rice washing container 20, the adhesion of water to the rice supply port 22 and the invasion of water from the rice supply port 22 to the rice storage 71 are reduced. It is possible to
Therefore, the spray nozzle 31 can spray water to a higher position in the rice washing container 20 or can spray it more strongly.

In addition, since the infiltration of water from the rice supply port 22 into the rice storage 71 is effectively reduced, the rice storage 71 can be arranged above the rice washing container 20. This eliminates the need for driving means for sucking the rice in the rice storage to transfer the rice from the rice storage to the rice washing container and transferring the rice from the rice storage 71 to the rice washing container by its own weight. It is possible to reduce the manufacturing cost, the breakdown, the maintenance load, and the life of the apparatus by simplifying the configuration.

Further, since the control device 100 executes the washing control in which the water jetting mechanism 30 injects water every time the prescribed repeating condition is satisfied, the inside of the rice washing container 20 can be kept clean, and the work load is very high. It is possible to reduce the number of times of cleaning the inside of the large-sized rice washing container 20 to reduce the work load.

[Other]
The rice washing device 1 includes the rice cooker 90, but the rice cooker 90 is not essential. For example, the base 11 of the frame 10 may be used only as a space for installing the inner pot 91 of the rice cooker 90, and the control device 100 may terminate the rice washing control until the discharge of the residual rice in step S15 of FIG. good.

Further, although the rice washing apparatus 1 includes the rice feeding mechanism 70, the rice feeding mechanism 70 is not essential. For example, only a loading port for loading a specified amount of rice into the rice washing container 20, such as packed rice packed with a specified amount, is provided. At the start of the rice washing operation, the shutter of the shutter mechanism 60 is opened, and the specified amount of rice is opened. The control device 100 may be configured to execute the rice washing control after step S3 in FIG.

1 Rice-washing apparatus 20 Rice-washing container 21 Discharge port 22 Rice-feeding port 23 Top plate 24 Cylindrical part (side wall part)
243 Work window 242 Opening/closing door 25 Conical portion 30 Jet water supply mechanism 31 Jet nozzle 40 Stirring mechanism 42-44 Stirring member 451 Stirring motor 50 Discharge port opening/closing mechanism 57 Open/close plug 591 Opening/closing motor 60 Shutter mechanism 61 Shutter 62 Driving unit 621 Shutter Opening/closing motor 70 Rice feeding mechanism 71 Rice storage 90 Rice cooker 91 Inner pot 100 Control device C Center line D Dotted line R Radial direction α angle θ Diffusion angle

Claims (6)

A rice washing container having a side wall along the peripheral surface and a discharge port formed at the bottom,
An injection water supply mechanism for supplying water into the rice washing container,
A stirring mechanism for rotating a stirring member provided in the rice washing container;
An outlet opening/closing mechanism for opening/closing the outlet of the rice washing container,
In a rice washing device provided with a control device for controlling the rice washing operation,
The injection water supply mechanism, have a spray nozzle water jet in a direction along the circumference of the side wall portion of the rice washing container in plan view to form a vortex,
The jet water supply mechanism has three jet nozzles and two shower nozzles that supply water with a weaker water flow than the three jet nozzles, and the three jet nozzles form the vortex flow in the same rotation direction. A rice washing apparatus, characterized in that water is jetted in a certain direction, and water is jetted in a range reaching the upper end of the side wall of the rice washing container . A rice washing container having a side wall along the peripheral surface and a discharge port formed at the bottom,
An injection water supply mechanism for supplying water into the rice washing container,
A stirring mechanism for rotating a stirring member provided in the rice washing container;
An outlet opening/closing mechanism for opening/closing the outlet of the rice washing container,
In a rice washing device provided with a control device for controlling the rice washing operation,
The injection water supply mechanism has an injection nozzle that forms a swirl by injecting water in a direction along the circumference of the side wall portion of the rice washing container in a plan view,
The jet water supply mechanism has three jet nozzles and two shower nozzles that supply water with a weaker water flow than the three jet nozzles, and the three jet nozzles form the vortex flow in the same rotation direction. Is sprayed in the direction of, and is configured to spray water in a range extending to the upper end of the side wall of the rice washing container,
A water supply pipe for supplying purified water to the three injection nozzles and the two shower nozzles is provided, and the water supply pipe is branched into a supply route from a supply source of purified water to each injection nozzle and a supply route to each shower nozzle. , The supply path to each of the injection nozzles is further branched on the downstream side to the supply path to each of the injection nozzles, and the supply path to each of the shower nozzles is branched on the downstream side to the supply path to each of the shower nozzles, The end of the supply pipe is connected to each of the injection nozzles and each of the shower nozzles.
A rice washing device characterized in that A rice washing container having a side wall along the peripheral surface and a discharge port formed at the bottom,
An injection water supply mechanism for supplying water into the rice washing container,
A stirring mechanism for rotating a stirring member provided in the rice washing container;
An outlet opening/closing mechanism for opening/closing the outlet of the rice washing container,
In a rice washing device provided with a control device for controlling the rice washing operation,
The injection water supply mechanism has an injection nozzle that forms a swirl by injecting water in a direction along the circumference of the side wall portion of the rice washing container in a plan view,
The jet water supply mechanism has three jet nozzles and two shower nozzles that supply water with a weaker water flow than the three jet nozzles, and the three jet nozzles form the vortex flow in the same rotation direction. Is sprayed in the direction of, and is configured to spray water in a range extending to the upper end of the side wall of the rice washing container,
A water supply pipe for supplying purified water to the three injection nozzles and the two shower nozzles is provided, and the water supply pipe is branched into a supply route from a supply source of purified water to each injection nozzle and a supply route to each shower nozzle. , The supply path to each of the injection nozzles is further branched on the downstream side to the supply path to each of the injection nozzles, and the supply path to each of the shower nozzles is branched on the downstream side to the supply path to each of the shower nozzles, The end of the supply pipe is connected to each of the injection nozzles and each of the shower nozzles,
A first solenoid valve and a second solenoid valve are provided in the supply pipe, and the first solenoid valve supplies a supply path to each of the injection nozzles in the water supply pipe and a supply to each of the shower nozzles. Provided on the downstream side of the branch position of the path and on the upstream side of the branch position to the individual injection nozzles, the second electromagnetic valve is a supply path to each of the injection nozzles in the water supply pipe and each of the above. It is provided on the downstream side of the branch position of the supply path to the shower nozzle and on the upstream side of the branch position of the individual shower nozzles.
A rice washing device characterized in that 4. A shutter mechanism having a shutter for opening and closing a rice supply port for supplying rice from a rice storage into the rice washing container, and a drive unit for applying an opening/closing operation to the shutter. The rice washing device according to any one of 1. The rice washing apparatus according to claim 4, wherein the rice storage is arranged above the rice washing container. The control device executes a cleaning control in which water is jetted by the jet nozzle of the jet water supply mechanism every time a prescribed repeating condition is satisfied. Rice washing equipment.

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