JP2023013006A - Rice washer - Google Patents

Abstract

To clean a rice washing tank efficiently with a small amount of water.SOLUTION: A rice washer includes: a rice washing tank 5; an upper water supply pipe 48 which supplies water from the upper part side of the rice washing tank 5; a lower water supply pipe 53 which supplies water from the lower part side of the rice washing tank 5; and a drain valve 64. In a cleaning mode, water is supplied from the upper water supply pipe 48 in a state that the drain valve 64 is closed and the drain valve 64 is opened during the water supply from the upper water supply pipe 48. Then, water supply from the upper water supply pipe 48 is stopped and water is supplied from the lower water supply pipe 53.SELECTED DRAWING: Figure 16

Description

TECHNICAL FIELD The present invention relates to a rice washing device before cooking rice.

When the washing mode is selected, with the drain valve closed, water is supplied from the bottom water supply means to fill the rice washing tank with water, and the stirring rod is driven to bring about the bubble washing state. A configuration is known in which water is drained by opening a drain valve thereafter (Patent Document 1).

Japanese Patent Application Laid-Open No. 2006-68111

According to Patent Document 1, the floating dust can be discharged by overflowing while the water is continuously full, but a large amount of water is required to fill the water.

An object of the present invention is to efficiently wash a rice washing tank with a small amount of water.

In order to solve the above problems, the present invention has taken the following technical measures.

The invention according to claim 1 comprises a rice washing tank 5, an upper water supply pipe 48 for supplying water from the upper side of the rice washing tank 5, a lower water supply pipe 53 for supplying water from the lower side of the rice washing tank 5, and a drain valve 64. In the cleaning mode, water is supplied from the upper water supply pipe 48 with the drain valve 64 closed, the drain valve 64 is opened when water is supplied from the upper water supply pipe 48, water supply from the upper water supply pipe 48 is stopped, and the water supply from the lower water supply pipe 48 is stopped. It was configured to supply water from the water supply pipe 53 .

According to the invention of claim 2, in the invention of claim 1, the upper water supply pipe 48 and the lower water supply pipe 53 are configured to branch from the main water pipe 46, and microbubbles are generated in the main water pipe 46. A microbubble generator 82a is provided.

According to the first aspect of the invention, first, the top water supply from the upper water supply pipe 48 cleans the rice bran and the like adhering to the inner wall of the rice washing tank 5, and also provides a cleaning action to the entire drain. After that, the drain valve 64 is opened to stop the top water supply and the bottom water supply is performed through the lower water supply pipe 53, so that bran mixed in the top water supply can be drained by the bottom water supply. Therefore, it is not necessary to fill the rice washing tank 5 with water, and the inside of the rice washing tank 5 and the periphery of the drain valve 64 can be washed efficiently.

According to the invention of claim 2, in addition to the effect of claim 1, microbubbles can be supplied to both the upper water supply pipe 48 and the lower water supply pipe 53, and microbubbles can be generated even if the amount of water in the upper water supply and the lower water supply is small. Since this acts on the inner wall of the rice washing tank 5 and around the drain valve 64, bran and the like can be removed.

BRIEF DESCRIPTION OF THE DRAWINGS It is a front view of the washing rice cooking apparatus which is an example of the rice washing apparatus concerning embodiment of this invention. It is a side view of the same washed rice rice cooker. It is a front cross-sectional view of the same washed rice rice cooker. Fig. 3 is a perspective view of a rice storage tank and a washed rice tank of the same washed rice rice cooker; It is a top view of the rice storage tank and the rice washing tank. It is a sectional side view of the measuring part of the same washed rice rice cooker. It is sectional drawing of the drum case of the same washed rice rice cooker. It is a perspective view of the same washed rice rice cooker. It is a top view of the partition member and peripheral arrangement apparatus of the same washed rice rice cooking apparatus. It is a perspective view of the same partition member and peripheral arrangement equipment. It is a control flowchart of the whole washed rice rice cooker. It is the side view which shows (a) operation|movement state of the same washing rice rice cooker, (b) top view which shows operation|movement state. It is a front view which shows the operation|movement condition of the rice cooking pot cover opening-and-closing arm of the same washed rice rice cooking apparatus. (a) A plan view of the rice cooking lid of the same washed rice rice cooking device, and (b) a side view of the rice cooking lid. It is a schematic diagram which shows the microbubble generator unit of the same washed rice rice cooker. It is a time chart at the time of immersion on a strainer of the same washed rice rice cooker. It is a time chart of the washing mode of the washed rice cooker.

An embodiment of the present invention will be described in detail below with reference to the drawings.

As shown in FIGS. 1 to 10, a support member 1 for vertically and horizontally framing a U-shaped or rectangular tube includes a rectangular underframe 1a having casters at the bottom, and left and right struts 1b each having a predetermined width and height. , 1b and a plurality of horizontal beams 1c, 1c, . . . suspended between the left and right columns 1b, 1b.

The horizontal beam 1c is provided with a flat partition member 3 for mounting each equipment, a rice storage tank 4 is provided above it, and a rice washing tank 5 is provided below the rice storage tank 4. A rice cooker 6 is arranged below with an interval therebetween. This rice cooker 6 comprises a rice cooker 7, a gas stove 8 for heating the rice cooker, a drawer-type stand 9, and the like. The drawer side of the frame 9 in FIG. 1 is the front side, and the rear side is the rear side.

The rice storage tank 4 is composed of an upper main tank 4a having a rectangular cross section and a lower funnel-shaped hopper portion 4b. A weighing drum case 10 is attached to the lower end portion of the hopper portion 4b. Inside the weighing drum case 10, there is provided a measuring drum 13 comprising a cylindrical drum portion 11a having a notch portion 11 and front and rear side wall portions 12a and 12b. It is rotatably supported on the drum case 10 by a horizontal shaft 14. As shown in FIG. A motor 15 is mounted on the rear side of the drum case 10 so as to directly interlock the shaft 14, and a fixed amount of rice flows from the rice storage tank 4 through the notch 11 into the weighing drum 13. When the position of the notch 11 is reversed downward and reaches the discharge port 16 formed in the drum case 10, the liquid is flowed down from the weighing drum 13 and discharged.

The partition member 3 is provided with an opening 17 corresponding to the discharge port 16, and is configured to feed out a predetermined amount of rice from the rice storage tank 4 to the rice washing tank 5 by rotating the weighing drum 13 by a predetermined number of revolutions. there is Further, it is configured such that a predetermined amount can be supplied by detection of a rotation sensor (not shown) that counts the number of times of feeding.

The drum case 10 and the funnel-shaped hopper 4b are integrally formed, and after removing the upper main tank 4a, the integrated body of the hopper 4b and the drum case 10 can be removed from the partition member 3. Configured. That is, on the rear side, the hook-shaped portion 18 formed on the partition member 3 is provided with an engaging portion 20 so that the engaging convex portion 19 of the drum case 10 can be engaged and disengaged. A detachable engagement stay 21 that can be detachably fixed by a screw is provided between the drum case 10 and the drum case 10 by loosening the screw 22 and rotating the stay 21 around the threaded portion. The lower edge of the drum case 10 is formed so as to fit into the rectangular opening of the partition member 3. When the engagement stay 21 is disengaged, the side of the drum case 10 is slightly lifted upward to allow the lower edge to be closed. By releasing the fitting from the partition member 3 and pulling it out obliquely from the front in the front direction, it is possible to release the engagement of the engaging portion 20 while unfitting the lower edge on the rear side.

The rice storage tank 2 and the weighing unit are covered with a cover member 23, and the left and right side walls and the rear side wall are appropriately fixed to the partition member 3 or the like. It is configured in the form of a door that can be opened and closed with the right side as a fulcrum. The upper half portion 23b of the front wall is connected to the left and right side walls to form a fixed wall. Therefore, the inspection and attachment/detachment of the rice storage tank 2 and the drum case 10 can be performed in a state in which the front wall lower half portion 23a is released. Reference numeral 24 denotes a rectangular covering plate for detachably covering the main tank 4a from above.

Reference numeral 25 denotes a discharge shutter for discharged rice provided on one side (front side in the figure) of the funnel-shaped hopper portion 4b, which blocks the discharged rice in an upright posture, and rotates around the shaft support to form an inclined guide chute. It is configured to be able to discharge the rice inside.

FIG. 7 shows a cross-sectional view of the weighing drum 13. Gaskets 26a and 26b for tilting and guiding the rice are provided between the funnel-shaped lower hopper 4b and the drum case 10. It is configured to have a clearance t (for example, about 1 mm) that does not crush the rice even if it enters the circumference.

The weighing drum 13 is repeatedly rotated in a fixed direction and stopped by the motor 15, and the stopping position of the weighing drum 13 is the position shown in FIG. That is, a vibrating means (a pump 66 for supplying air, which will be described later) is attached to the sidewall of the funnel-shaped hopper 4b on the inclined wall near the existence side of the gasket 26b on the rear side of the rotation to promote the flow of rice inside. At the same time, the opening edge of the weighing drum 13 stops behind the rotation of the vibrating side gasket 26b, and the other opening edge stops in front of the non-vibrating side gasket 26a. As a result, the rice that tries to enter due to the vibration of the vibrating means is shielded by the weighing drum 13, while the rice is naturally fed into the weighing drum 13 on the non-vibrating side, thereby stabilizing the accuracy of the supply amount.

As shown in FIG. 3, the rice washing tank 5 has a receiving cylinder 31 on the ceiling for guiding the rice supplied from the drum case 10, a cylindrical body in the middle, and a hopper in the bottom. A filter 33 consisting of a net-like body having openings at the boundary between the hopper-like portion and the jacket portion 32 which is large enough to prevent rice grains from leaking out. is provided.

A vertical rotating shaft 34 is provided at the center of the rice washing tank 5, and a plurality of stirring rods 35, 35, . . . 34 by welding or the like. The rotary shaft 34 is rotated by the rice washing motor 36 through the bevel gear mechanism 37, and is configured to agitate the rice and water in the tank by rotation.

The rotary shaft 34 is a hollow shaft, and the inner shaft 38 is loosely fitted inside the outer hollow shaft 34 so as to be vertically slidable and extends downward. A cone-shaped rice discharge valve 39 is detachably attached to the lower end of the shaft 38 . The upper end of the shaft 38 is vertically moved by an interlocking mechanism such as a cam 41 driven by a rice discharge valve drive motor 40 and a dropping arm (to be described later) to control the opening and closing of the rice discharge valve 39 . When the rice discharge valve 39 is opened, the rice in the rice washing tank 5 drops into the inner pot of the rice cooker 6 below.

Water is supplied to the rice washing tank 5 through a main water pipe 46 communicating with a water faucet, an upper water supply valve 47, two flexible upper water supply pipes 48, 48, an upper water supply port 49 on the ceiling of the rice washing tank 5, 49 and a lower water supply route branching from the main water pipe 46 and branching from the lower water supply valve 50, the water pipe 51, the lower water supply port 52 and passing through the jacket portion 32. Each water supply route is equipped with a flow rate sensor.

That is, in the vicinity of the drum case 10, two upper water supply pipes 48, 48 leading to a main water pipe 46 are arranged with the partition member 3 as a base, and a water pipe 51 through which the partition member 3 penetrates. A lower water supply pipe 53 is connected.

Reference numeral 55 denotes a shutter that opens and closes the discharge port 16 in cooperation with the electric motor 15. The rotation of the motor 15 is connected to the shutter support shaft 58 through link mechanisms 56 and 57 so that the drum opening coincides with the discharge port 16. It is interlocked so that the shutter 55 is opened when it is turned on. For this reason, the shutter 55 is normally in a closed position, preventing the diffused water from scattering during the rice washing in the rice washing tank 5 and preventing water from entering the weighing drum 13 .

The upper water supply pipes 48, 48 are arranged to be positioned on the left-right center line in plan view, and this position corresponds to the left-right center line of the rice washing tank 5 described later in plan view. Further, the drum case 10 is located on the left side of the position where the upper water supply pipes 48, 48 are arranged, and on the right side, there are a motor 40 for the rice discharge valve 39 and stirring rods 35, 35 . . . are placed.

A drain box 60 is provided behind the lower portion of the rice washing tank 5 . A drain box 60 having a drain port 61 is connected to a lower end of an overflow pipe 62 whose upper end opens to the upper side surface of the rice washing tank 5 and the other end of the jacket part 32 whose one end communicates with the jacket part 32. It is Drainage from the jacket portion 32 is performed by opening and closing the drain valve 64 , and the water level in the rice washing tank 5 is adjusted while the water is drained by the water level valve 65 .

The drain box 60 is normally closed by the drain valve 64 and the water level valve 65, but when the water in the rice washing tank 5 is to be drained, the filter 33 of the jacket part 32 opens the drain valve 64 and/or the water level valve 65. , the drain box 60 and the drain outlet 61. The drain valve 64 and the water level valve 65 are opened and closed by an appropriate open/close output. A water level sensor 68 for detecting the amount of water in the rice washing tank 5 is provided in the upper part of the rice washing tank 3 .

By the way, the overflow pipe 62 has a horizontal pipe portion 62a connected to the vicinity of the upper end of the rice washing tank 3 and a vertical pipe portion 62b connected to the horizontal pipe portion 62a. 60. The upper end of the vertical pipe portion 62b extends upward, and the extension pipe portion 62c penetrates the partition member 3 and is appropriately fixed and supported by a mounting holder 69 provided on the lower surface of the partition member 3. As shown in FIG.

Within the cover member 23, the substantially closed space A between the lower portion of the rice storage tank 4 and the partition member 3 accommodates the weighing unit 10, various driving units, piping, etc. However, ventilation is ensured to prevent water vapor from being trapped. That is, the blower fan 70 is arranged on one side wall of the cover member 23, and is driven by being energized at all times during operation of the apparatus so that external air can be supplied into the space A. As shown in FIG. The air entering the space A appropriately flows through the space A and is exhausted to the outside of the machine through a mesh hole or the like, which will be described later. Therefore, it is possible to reduce the humidity by circulating the outside air in the space A which has received steam rising during rice cooking. A controller 71 is arranged on the inner surface of the cover member 23 on the side facing the blower fan 70, and the control roller 71 can also be ventilated to remove moisture. When the upper end opening of the extension pipe portion 62c is viewed near the controller 71, for example, below the front portion of the controller 71, an appropriate air flow is generated and the air acting on the controller 71 is efficiently introduced into the extension pipe portion 62c. obtain.

By the way, by penetrating the extension 62c of the overflow pipe 62 through the partition member 3 as described above, the upper end opening faces into the space A, and the ventilation from the blower fan 70 flows into the rice washing tank 5 through the overflow pipe 62. will be supplied to That is, the air entering from the upper end of the extension pipe portion 62c of the overflow pipe 62 enters the rice washing tank 5 through the extension portion 62c and the horizontal pipe portion 62a. Therefore, there is an effect of drying the inside of the rice washing tank 5 . In this way, by configuring the ventilation part B such as the extension pipe part 62c of the overflow pipe 62 between the space part A and the rice washing tank 5, the air circulated by the blower fan 70 can be introduced into the rice washing tank 5. , the inside of the rice washing tank 5 can be dried.

If the extension pipe portion 62c of the overflow pipe 62 is provided as the ventilation portion B, even if the dust in the space A is carried by the air, the dust falls through the vertical pipe portion 62b of the overflow pipe 62 and is drained. 60, there is little possibility of entering the rice washing tank 5.

The upper end portion of the extension tube portion 62c (ventilation portion B) may be fitted with a mesh-like body 73 made of ventilation mesh or punching metal to prevent entry of foreign matter.

A hollow portion C is provided at the bottom bottom of the space portion A surrounded by the cover member 23 and the partition member 3 to accommodate various harnesses (not shown). More specifically, the partition member 3 is formed by integrally forming a side wall by drawing, and a bottom plate 72 is provided under the partition member 3 in the form of a cover to form a hollow portion C. As shown in FIG. In addition, a net-like body 74 made of a ventilation net or punching metal is attached to an appropriate place of the partition member 3 so as to communicate with the cavity portion C. As shown in FIG. In this case, the mesh size of the mesh-like body 73 at the upper end portion of the extension pipe portion 62c (ventilation portion B) is assumed to be smaller than the mesh size of the mesh-like body 74 disposed at the proper position of the partition member 3, so that foreign matter, especially It enhances the effect of preventing entry of micro-sized insects.

Next, the water level sensor 68 will be explained. The water level sensor 68 is provided to detect whether the water level of the rice washing tank 5 reaches the overflow state or the water level has reached the overflow state. This is a known configuration that can detect that the predetermined water level has been reached by detecting a change in capacitance based on the presence or absence of the water level. A water level sensor 68 is detachably supported on the partition member 3 . The detection electrode 68a is connected and fixed to a supporting base member 68b. That is, on the upper surface of the partition member 3, it is positioned near the front wall lower half portion 23a of the cover member 23 and connected and fixed to the base member 68b. The base member 68b of the water level sensor 68 is fixed by tightening and loosening rotation lock pieces 75 provided on the left and right sides with butterfly bolts 76, respectively. It is assumed to be practicable and is provided without a so-called tool. When the base member 68b is removed, the large opening 77 formed in the partition member 3 can be opened. Therefore, by opening the lower half portion 23a of the front wall of the cover member 23, the worker can see the inside of the rice washing tank 5 through the opening 77 that opens to the front side.

In the above embodiment, the water level detecting portion of the water level sensor 68 is in the form of an electrode capable of detecting the presence or absence of capacitance. can do.

Water is supplied to the rice washing tank 5 by two systems: an upper water supply route passing through the upper water supply port 48 in the ceiling of the rice washing tank 5 and a lower water supply route passing through the jacket portion 32 from the lower water supply port 51. In this configuration, an air ejection pipe 67 communicating with a pump 66 and ejecting air is arranged in parallel with the lower water supply pipe 52 of the lower water supply route, and the air is combined with the water of the lower water supply route in parallel with the jacket. 12(b), the lower water supply pipe 52 and the air ejection pipe 67 are provided at positions eccentric from the center of the jacket portion 32, and air and water are mixed. This makes it easier for a swirling flow to occur.

During the rice washing operation in the rice washing tank 5, the rotation direction of the large and small stirring rods 35, 35, . . . The directions of air jets from the nozzles are opposite to each other. It should be noted that supplying air from the air ejection pipe 67 while the rice washing tank 5 is empty contributes to the drying of the inside of the rice washing tank 5 . For this reason, the switch means for driving the pump 66 can be turned on even when the rice is not being washed, so that the operator can arbitrarily dry the rice washing tank 5 . The air supply by driving the pump 66 may be performed independently, or may be performed in a form that can be performed in duplication with the air supply from the communication portion B. As shown in FIG.

Next, operation of the rice cooker will be described.

First, the control section of the computer (not shown) stores the amount of rice to be cooked, the rice washing time (rotation time of the stirring rod 35), the rice polishing time (rotation time of the stirring rod 35), the soaking time in the rice washing tank or rice cooker, etc. The conditions necessary for the operation are set by an operation panel (operation display device) 80 provided on the lower half portion 23a of the front wall of the cover member 23. As shown in FIG. Equipped with a liquid crystal display screen 81, the above conditions necessary for washing and cooking rice can be set while displaying and guiding the functions and operation procedures of the surrounding switch group 82 operation.

The action of the above example will be described.

Turn on the power switch, set the rice cooking conditions according to each operation on the operation panel 80, and after setting various rice cooking conditions, turn on the start switch to start the operation as shown in the rice cooking flow shown in FIG.

That is, after turning on the power switch (step 1), the rice cooking conditions are set and input (step 2), and when the start switch 75 is pressed (step 3), the rice in the rice storage tank 4 is weighed by the weighing drum in step 4. Then, a set amount of rice is supplied to the rice washing tank 5, and the rice is washed in step 5.

The rice washing process in step 5 includes a de-bran process in which the rice is stirred while dripping water, a rice polishing process in which water is once supplied and the water is drained and the rice is stirred in a wet state, a rough rinsing process in which the rice is stirred at a predetermined water level, and water is poured into a tank. It consists of a finish rinsing process that stirs while overflowing more.

After the rice washing process of step 5, the water adjustment process of step 6 is performed. In step 7, the washed rice in the rice washing tank 5 and the water that has been measured in step 3 are dropped into the rice cooker 7 by opening and closing the rice discharge valve 139.

In step 8, the rice in the rice cooker 7 is soaked in water for a specified period of time. After the lapse of the specified time, ignition is performed in step 9, rice is cooked in step 10, steaming is performed in step 11, and the rice is cooked in step 12 to prepare a predetermined cooked rice.

Before the start switch is turned on, the reservation screen is output by operating the reservation switch, and the cooking completion time and the like can be reserved and set, so that the rice can be cooked at the scheduled time.

In the above embodiment, the water level is gradually reduced by opening the water level valve 65 from the full state of the rice washing tank to ensure a predetermined amount of water. The configuration may be managed.

After the start switch is turned on, the blower fan 70 is continuously driven during the rice washing and rice cooking operation, and is designed to be driven for a predetermined period of time after the rice cooking operation. By configuring in this way, the inside of the rice washing tank 5 can be dried after the rice cooking operation is completed. After the rice cooking operation, the state of the drain valve 64 and the drop valve 39 when the blower fan 70 is driven is set so that the drop valve 39 is closed and the drain valve 64 is open. Therefore, the air blown by the blower fan 70 is introduced from the extension pipe portion 62c, enters the upper side of the rice washing tank 5 through the horizontal pipe portion 62a, and enters the lower side of the rice washing tank 5 through the vertical pipe portion 62b and the drain box 60. As a result, the drying efficiency can be improved with respect to the air supply from the upper side only.

Since the drainage box 60 of this embodiment is provided on the side of the rice washing tank 5 (the right side in the example of FIG. 1), the maintenance of the drainage box 60 is easy. Also, if a pot lid opening/closing arm 81, which will be described later, moves in the left-right direction and is positioned directly below the drain box 60 in the lid open position (FIG. 13), it does not interfere with the attachment and detachment of the rice washing tank 5.

Regarding the rice cooking pot 7, in FIG. 14, the rice cooking pot 7 is detachably provided with a container 31 and a middle-high shaped rice cooking lid 32 that closes the main body opening of the container 31 and has a high central portion. , a supply hole 32h is formed in the central portion, and a slide shutter 33S as supply hole opening/closing means is attached so as to be able to open and close so as to block the supply hole 32h.

The slide shutter 33S is slidably provided along the horizontal guide rails 33a, 33a. In the slide shutter 33S, the lid opening/closing arm 81 engages the knob 32c in the center of the rice cooking pot 32, and the supply hole 32h can be opened and closed by lateral movement control. is located immediately below the drain box 60. FIG.

Next, a configuration will be described in which microbubbles are included in the water supplied to the rice washing tank 5 so that the rice can be washed well in the rice washing process.

As shown in FIG. 15, a microbubble unit 82 containing a microbubble generator 82a is connected to the middle of the main water pipe 46 located behind the rice washing tank 5. As shown in FIG. That is, the microbubble unit 82 is provided with upper and lower attachment/detachment tools 82b, 82b so that it can be attached to and detached from the main water pipe 46. As shown in FIG. The micro-valve unit 82 is provided with a faucet 83 upstream of the micro-bubble generator 82a. The microbubble generator 82a is supported by a support 84, and the support 84 and the microbubble generator 82a are detachable with a tool.

The microbubble generator 82a has a known structure in which microbubbles are supplied to the water when the water passes through the microvalve unit 82 .

Water containing microbubbles generated by the microbubble generator 82a of the present embodiment is supplied into the rice washing tank 5 through the upper water supply route and the lower water supply route. .

The time chart shown in FIG. 16 shows the details of the case where after the rice washing process (step 5 in FIG. 11), so-called soaking is performed, followed by the water adjustment process (step 6 in FIG. 11). The relationship between the motor 36, the upper water supply valve 47 of the upper water supply route, and the lower water supply valve 50 of the lower water supply route is shown. After the rice washing process, so-called sieve soaking is performed, and in the case where a process of shifting to the water adjustment process by the lower water supply route is provided, the upper water supply valve 47 is opened for a predetermined short time during the sieve soaking for several seconds (for example, 2 seconds). It is configured to supply water. With this configuration, water containing microbubbles enters between the inner surface of the rice washing tank 5 and the rice by sprinkling water from the top water supply during soaking in a strainer, making it difficult for the rice to adhere to the inner surface of the tank. Remaining rice after rice dropping can be reduced.

Next, the time chart shown in FIG. 17 shows the rice washing motor 36, the upper water supply valve 47, the lower water supply valve 50, and the water discharge valve for draining the water in the rice washing tank 5 in the washing process for washing the rice washing tank 5 after the rice dropping process. 64, the relationship between the water level valve 65 for adjusting the water level in the rice washing tank 5 while draining water, and the rice discharge valve 39. That is, the rice throwing process is completed, that is, the rice discharge valve 39 is closed, the rice washing motor 36 is stopped, the drain valve 39 is closed, and the process shifts to the washing process. , and then the lower water supply valve 50 is opened to supply water to the bottom. With this arrangement, the top water supply first cleans the rice bran and the like adhering to the inner wall of the rice washing tank 5, and at the same time, the surroundings of the drain valve 64, for example, the entire drain box 60 are washed. After that, the drain valve 64 and the water level valve 65 are opened to stop the top water supply and supply the bottom water supply. Therefore, it is not necessary to fill the rice washing tank 5 with water, and the inside of the rice washing tank 5 and the surroundings of the drain valve 64 and the water level valve 65 can be washed efficiently.

As described above, water is supplied to the rice washing tank 5 through the main water pipe 46 communicating with the water faucet, the upper water supply valve 47, the two flexible upper water supply pipes 48, 48, and the upper part of the ceiling of the rice washing tank 5. Two systems of upper water supply means via water supply ports 49 and 49 and lower water supply means branched from the main water pipe 46 and branched from the lower water supply valve 50, water pipe 51, and lower water supply port 52 via the jacket portion 32. , and the micro-valve unit 82 of the micro-bubble generator 82a is provided on the upstream side of the branch where the main water pipe 46 branches to the lower water supply valve 50 side. That is, the main water pipe 46 is branched into the upper water supply pipe 48 and the lower water supply pipe 53, and the main water pipe 46 is provided with a microbubble generator 82a for generating microbubbles. Therefore, since microbubbles can be supplied to both the upper water supply means and the lower water supply means, microbubbles act on the inner wall of the rice washing tank 5 and around the drain valve 64 and the water level valve 65 even if the water amount of the upper water supply and the lower water supply is small. Therefore, bran etc. can be removed efficiently.

5 Washed rice tank 46 Main water pipe 48 Upper water supply pipe 53 Lower water supply pipe 64 Drain valve 82a Microbubble generator

Claims (2)

A rice washing tank (5), an upper water supply pipe (48) for supplying water from the upper side of the rice washing tank (5), a lower water supply pipe (53) for supplying water from the lower side of the rice washing tank (5), and a drain valve ( 64), water is supplied from the upper water supply pipe (48) with the drain valve (64) closed in the washing mode, the drain valve (64) is opened when water is supplied from the upper water supply pipe (48), and then the upper water supply is performed. A rice washing apparatus configured to stop water supply from a pipe (48) and to supply water from a lower water supply pipe (53). The upper water supply pipe (48) and the lower water supply pipe (53) are configured to branch from the main water pipe (46), and the main water pipe (46) is provided with a microbubble generator (82a) for generating microbubbles. The rice washing device according to claim 1, wherein

Images