Rice washing device

Abstract

To supply air bubbles to a rice washing tank with simple means to contribute to rice washing etc.SOLUTION: A micro bubble generator (81a) which generates micro bubbles when water passes therethrough is provided at a middle part of a water supply route for supplying water to a rice washing tank (5) to supply micro bubbles to a rice washing step, in which rice is washed, an immersion step, in which the rice is immersed in water, a water adjustment step, in which an adjusted amount of water is supplied to the rice. The micro bubble generator (81a) is integrated with a water faucet (80) to form a unit.SELECTED DRAWING: Figure 15

Description

Technical Field

[0001] The present invention relates to a rice washing device before cooking rice.

Background Art

[0002] In a rice washing and cooking device including a rice washing section and a rice cooking section, a configuration including an air compressor that supplies air bubbles into the rice washing tank to contribute to rice washing is known (Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] According to Patent Document 1, a separate compressor is required. Also, the bubble rice washing of Patent Document 1 only describes the rice washing process.

[0005] An object of this invention is to supply air bubbles to a rice washing tank by simple means and contribute to rice washing and the like.

Means for Solving the Problems

[0006] In order to solve the problems to be solved by such an invention, the invention according to claim 1 is covering the rice storage tank (23) and the metering section with a cover member (23), providing left and right support columns (1b) for supporting the cover member (23), providing a main water supply pipe (46) for supplying water to the rice washing tank (5), branching an upper water supply pipe (48) and a lower water supply pipe (53) from the main water supply pipe (46), forming an upper water supply route from the upper water supply pipe (48) via the upper water supply port (49) at the ceiling portion of the rice washing tank (5), A lower water supply route is formed from the lower water supply pipe (53) through the water supply hose (51a) provided on the side of the rice washing tank (5) and the lower water inlet (52) via the jacket part (32). The upper water supply route supplies water in the immersion process, and the lower water supply route supplies water in the rice washing process and the water adjustment process after the immersion process. By detachably connecting the microbubble generator (81a) to the main water distribution pipe (46), microbubbles are supplied to each of the rice washing process for washing rice, the immersion process for immersing rice, and the water adjustment process for supplying water with adjusted water volume to the rice. The microbubble generator (81a) is arranged in the space between the left and right support columns (1b) and below the cover member (23). The microbubble generator (81a) is a microbubble generator unit (81) integrated with the water tap (80), the microbubble generator (81a) is provided downstream of the water tap (80), and the microbubble generator unit 81 is provided with detaching tools 81b at the upper and lower ends respectively, and is configured to be detachable from the main water pipe 46 respectively, water containing microbubbles passing through the microbubble generator (81a) from the water tap (80) enters the rice washing tank 5 through the upper water supply route and the lower water supply route, It is characterized by being a rice washing device. 。

[0007]

Advantages of the Invention

[0008] As a result, especially without any operation, during the rice washing process, the immersion process, and the water adjustment process, water with microbubbles injected is always supplied. Therefore, the rice washing process is improved. Also, since a compressor is not required, a simple configuration can be achieved.

[0009] Moreover, it has a simple configuration and is easier to maintain.

Brief Description of the Drawings

[0010]

Figure 1

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[0011]

Figure 15

Figure 16

Embodiments for Carrying Out the Invention

[0012] Embodiments of the present invention will be described in detail below with reference to the following drawings. The support member 1 that frames the U-shaped or square tube material vertically and horizontally is composed of a rectangular base frame 1a provided with casters at the lower part, left and right support columns 1b, 1b with a predetermined width and a predetermined height, and a plurality of horizontal bars 1c, 1c... supported between the left and right support columns 1b, 1b.

[0013] A flat partition member 3 is provided on the above-mentioned horizontal crossbar 1c for mounting each equipment. A rice storage tank 4 is provided above it, a rice washing tank 5 is provided below the rice storage tank 4, and a rice cooker 6 is arranged at intervals below the rice washing tank 5. This rice cooker 6 is composed of a rice cooking pot 7, a gas stove 8 for heating the pot, a pull-out stand 9, etc. In FIG. 1, the pull-out side of the stand 9 is the front side and the back side is the rear side.

[0014] The rice storage tank 4 consists of a main tank 4a with a square cross-section at the upper part and a funnel-shaped hopper part 4b at the lower part. A weighing drum case 10 is attached to the lower end of this hopper part 4b. Inside the weighing drum case 10, a weighing drum 13 is provided, which consists of a drum part 11a with a cylindrical shape and a notch 11 formed, and front and rear side wall parts 12a, 12b. The weighing drum 13 is rotatably supported by the drum case 10 by a horizontal shaft 14 so as to penetrate the front and rear side wall parts 12a, 12b. Also, a motor 15 is mounted on the rear surface side of the drum case 10 to directly interlock with this shaft 14. The rice flowing down from the rice storage tank 4 into the weighing drum 13 in a fixed amount through the notch 11 is filled. When the position of the notch 11 is inverted downward by rotation and reaches the discharge port 16 formed in the drum case 10, it flows down and is discharged from the weighing drum 13.

[0015] The partition member 3 is provided with an opening 17 corresponding to the discharge port 16, and is configured to feed 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 rotations. Also, it is configured to supply a predetermined amount according to the detection of a rotation sensor (not shown) that counts the number of feeding times.

[0016] The above-mentioned drum case 10 and the funnel-shaped hopper 4b are integrally formed. After removing the upper main tank 4a, the integrated unit of this hopper 4b and the drum case 10 is configured to be removable from the partition member 3. That is, on the rear side, an engaging portion 20 is provided at the engaging convex portion 19 of the drum case 10 to be detachably engaged with the hook-shaped portion 18 formed on the partition member 3. On the front side, a detachable engaging stay 21 that can be detachably fixed with screws is provided between the partition member 3 and the drum case 10. By loosening the screw 22 and rotating the stay 21 around the screw portion center, the engagement with the drum case 10 is released. The lower end edge of the drum case 10 is formed to fit into the rectangular opening of the partition member 3. However, by removing the engagement of the above-mentioned engaging stay 21, slightly lifting the side upward, releasing the fit from the partition member 3 at the lower end edge, and pulling it out obliquely forward from the front, the engagement of the lower end edge on the rear side can be released while being released from the engagement of the engaging portion 20.

[0017] The rice storage tank 2 and the weighing section are configured to be covered by a cover member 23 on the outside. The left and right side walls and the rear side wall are appropriately fixed to the partition member 3 and the like. The lower half portion 23a of the front side wall is configured in a door form that can be opened and closed with, for example, the right side portion in the front view as a fulcrum. The upper half portion 23b of the front side wall is configured to be detachably connected to the left and right side walls. Therefore, the inspection and detachment of the rice storage tank 2 and the drum case 10 can be performed with the lower half portion 23a of the front side wall released. Reference numeral 24 is a square cover plate that detachably covers the main tank 4a from above.

[0018] Reference numeral 25 is a discharge shutter for discharging rice provided on one side (the front side in the illustrated example) of the funnel-shaped hopper portion 4b. It blocks the rice discharge in the standing posture and is configured to be in an inclined guide chute shape by rotating around the shaft support portion to discharge the rice inside.

[0019] FIG. 7 shows a cross-sectional view of the weighing drum 13 portion. Gaskets 26a and 26b for guiding rice obliquely are provided obliquely between the funnel-shaped lower hopper 4b and the drum case 10, and a gap t (for example, about 1 mm) is provided between the outer circumference of the weighing drum 13 and the inner circumference of the drum case 10 so that the rice intrusion does not crush it.

[0020] The metering drum 13 rotates and stops repeatedly in a certain direction by the motor 15, and the stop position of the metering drum 13 is set to the position shown in FIG. 7. That is, a vibration means (in the illustrated example, a pump 66 for air supply described later) is attached to the inclined wall near the side where the rotation rear gasket 26b exists on the side wall of the funnel-shaped hopper 4b to promote the internal rice flow, and at the same time, the metering drum 13 has its open end edge stop at the rear position of the vibration side gasket 26b in rotation, and the other open end edge stops at the front position of the non-vibration side gasket 26a, so that the rice trying to enter due to the vibration of the vibration means is shielded by the metering drum 13, while on the non-vibration side, the rice is naturally fed into the metering drum 13 to stabilize the accuracy of the supply amount.

[0021] As shown in FIG. 3, the rice washing tank 5 is configured to include a receiving cylinder portion 31 at the ceiling portion for guiding the rice supplied from the drum case 10, a cylindrical body portion in the middle portion, and a hopper-shaped portion at the lower portion. A jacket portion 32 is connected below the hopper-shaped portion of the rice washing tank 3, and a filter 33 made of a net-like body having an opening to the extent that rice grains do not leak is provided at the boundary between the hopper-shaped portion and the jacket portion 32.

[0022] A vertical rotation shaft 34 is provided at the center of the rice washing tank 5, and a plurality of stirring rods 35, 35... formed by bending a rod-shaped body into an inverted L shape are attached to the upper end portions thereof to the shaft 34 by welding or the like. The rotation shaft 34 is rotated by a rice washing motor 36 via a bevel gear mechanism 37 and is configured to stir the rice and water in the tank by rotation.

[0023] The rotation 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 conical discharge valve 39 is detachably provided at the lower end of the shaft 38. The upper end of the shaft 38 is vertically moved by a cam 41 driven by a discharge valve driving motor 40 and an interlocking mechanism such as a dropping arm described later, and the opening and closing of the discharge valve 39 are controlled. When the discharge valve 39 opens, the rice in the rice washing tank 5 is configured to fall into the inner pot of the rice cooking device 6 below.

[0024] A main water supply pipe 46 for supplying water to the rice washing tank 5 is provided. Then, an upper water supply pipe 48 and a lower water supply pipe 53 branch from the main water supply pipe 46. In the middle part of the upper water supply pipe 48, an upper water supply route is provided via an upper water supply valve 47 for adjusting the presence or absence of water supply and via upper water inlets 49, 49 at the ceiling part of the rice washing tank 5. Further, the lower water supply pipe 53 is provided with a lower water supply route that passes through a lower water supply valve 50, passes through the cover member 23, and passes through a water supply hose 51a provided on the side of the rice washing tank 5 and via a lower water inlet 52 to the jacket part 32. That is, the water supply is performed in two systems. Each water supply route is provided with a flow rate sensor (not shown). Note that the water supply hose 51a is not shown in the drawings such as FIG. 8 and FIG. 10.

[0025] Two upper water supply pipes 48, 48 communicating with the main water supply pipe 46 are arranged based on the partition member 3 near the drum case 10, and a lower water supply pipe 53 passing through the partition member 3 is provided.

[0026] Reference numeral 55 is a shutter that opens and closes the discharge port 16 in linkage with the electric motor 15. The motor 15 is connected to the shutter support shaft 58 part via link mechanisms 56, 57, and is configured to be interlocked so that the shutter 55 is in an open state when the drum opening coincides with the discharge port 16. For this reason, the shutter 55 is always in a closed position, preventing the scattering of diffused water during rice washing in the rice washing tank 5 and preventing the intrusion of water into the measuring drum 13.

[0027] 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, a motor 40 for the rice discharge valve 39 and rice washing motors 36 for driving the stirring rods 35, 35... described later are arranged.

[0028] A drain box 60 is provided on the lower side of the rice washing tank 5. The drain box 60 having a drain port 61 is connected to the 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. Drainage from the jacket part 32 is carried out by opening and closing a drain valve 64, and the water level in the rice washing tank 5 is adjusted while draining with a water level valve 65.

[0029] Normally, the drain box 60 is closed by the drain valve 64 and the water level valve 65. However, when draining the water in the rice washing tank 5, it is drained from the filter 33 of the jacket part 32 through the drain valve 64 and / or the water level valve 65, the drain box 60, and the drain port 61. The drain valve 64 and the water level valve 65 are opened and closed by an appropriate opening and closing output. Further, 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.

[0030] By the way, the overflow pipe 62 has a horizontal pipe part 62a connected near the upper end of the rice washing tank 3 and a vertical pipe part 62b connected to the horizontal pipe part 62a, and the lower end of the vertical pipe part 62b is connected to the drain box 60. Then, the upper end of the vertical pipe part 62b is extended upward, and this extended pipe part 62c is appropriately fixed and supported by a mounting holder 69 provided on the lower surface of the partition member 3 in a state of passing through the partition member 3.

[0031] Inside the cover member 23, in a substantially closed space A between the lower part of the rice storage tank 4 and the partition member 3, the above-described metering unit 10, various drive units, piping, etc. are accommodated, and air permeability is ensured to prevent the accumulation of water vapor. That is, a blower fan 70 is arranged on one side wall of the cover member 23, which is constantly energized and driven during the operation of the device, and is configured to supply external air into the space A. The air that enters the space A appropriately circulates through the space A and is exhausted outside the machine from the mesh hole part and the like described later. Therefore, the humidity inside the space A that receives the water vapor rising during rice cooking can be reduced by the circulation of external air. A controller 71 is arranged on the inner surface of the cover member 23 on the side opposite to the blower fan 70, and moisture can be removed by also giving a ventilation effect to this controller 71. In the vicinity of the controller 71, for example, when the upper end opening of the extension pipe part 62c is exposed below the front part of the controller 71, an appropriate air flow is generated, and the air acting on the controller 71 can be efficiently introduced into the extension pipe part 62c.

[0032] By the way, as described above, the extension part 62c of the overflow pipe 62 penetrates the partition member 3, so that the upper end opening part projects into the space A, and the ventilation from the blower fan 70 is supplied into the washing rice tank 5 through the overflow pipe 62. That is, the air that enters from the upper end of the extension pipe part 62c of the overflow pipe 62 enters the washing rice tank 5 through the extension part 62c and the horizontal pipe part 62a. Therefore, it has the effect of drying the inside of the washing rice tank 5. In this way, by configuring a ventilation part B such as the extension pipe part 62c of the overflow pipe 62 between the space A and the washing rice tank 5, the circulating air by the blower fan 70 can be introduced into the washing rice tank 5, and the inside of the washing rice tank 5 can be dried.

[0033] If the extension pipe part 62c of the overflow pipe 62 is provided as the ventilation part B, even if the dust in the space A is conveyed by the air, this dust falls through the vertical pipe part 62b of the overflow pipe 62 and reaches the drainage tank 60, and there is little chance of entering the washing rice tank 5.

[0034] A mesh body 73 made of a ventilation net or punching metal may be attached to the upper end of the extension pipe portion 62c (ventilation portion B) to prevent foreign matter from entering.

[0035] A cavity C is provided at the lower part of the bottom surface of the space portion A surrounded by the cover member 23 and the partition member 3 or the like to accommodate various harnesses (not shown). Specifically, the partition member 3 is formed by constricting and integrally molding the side walls, and a bottom plate 72 is provided in a lid-like manner below it to form the cavity C. A mesh body 74 made of a ventilation net or punching metal is attached to an appropriate position of the partition member 3 to communicate with the cavity C. In this case, the mesh size of the mesh body 73 at the upper end of the extension pipe portion 62c (ventilation portion B) is smaller than the mesh size of the mesh body 74 disposed at an appropriate position of the partition member 3, enhancing the effect of preventing the entry of foreign matter, particularly insects of a minute size.

[0036] Next, the water level sensor 68 will be described. The water level sensor 68 is provided to detect that the water volume in the rice washing tank 5 has reached the water level immediately before or at the overflow state, and has a detection electrode 68a (water level detection portion) for detecting the reaching of a predetermined water level, and is configured to detect a change in capacitance based on the presence or absence of water level and detect the reaching of the predetermined water level. The water level sensor 68 is detachably supported by the partition member 3. The detection electrode 68a is connected and fixed to a base member 68b for support. That is, it is located at a position on the upper surface of the partition member 3 close to the lower half portion 23a of the front side wall of the cover member 23 and is connected and fixed to the base member 68b. The fixing of the base member 68b of the water level sensor 68 is configured such that rotation locking pieces 75 disposed at two positions on the left and right are fastened and loosened by wing bolts 76 respectively, and the rotation operation of the wing bolts 76 can be performed with fingers and is provided in a so-called tool-free manner. When the base member 68b is removed, a large opening 77 formed in the partition member 3 can be opened. Therefore, the operator can visually observe the inside of the rice washing tank 5 through the opening 77 that opens to the front side by opening the lower half portion 23a of the front side wall of the cover member 23.

[0037] In the above embodiment, the water level detection unit of the water level sensor 68 is configured in the form of an electrode that can detect the presence or absence of capacitance. However, it can be configured in various forms, such as a float type that can turn on and off an electrical contact as the so-called float rises.

[0038] The supply of water to the rice washing tank 5 is configured to be carried out by two systems: an upper water supply route via the upper water inlet 48 at the ceiling of the rice washing tank 5 and a lower water supply route from the lower water inlet 51 via the jacket part 32. The lower water supply pipe 52 is arranged in the rice washing tank 5 in a way that a swirling flow is likely to occur in Fig. 12(b).

[0039] During the rice washing operation in the rice washing tank 5, it is desirable to configure the rotation directions of the large and small stirring rods 35, 35... provided on the rotating shaft 34 in the rice washing tank 5 and the water ejection direction from the lower water supply route to be opposite to each other.

[0040] Next, the operation of the rice cooker will be described.

[0041] First, necessary conditions for the operation of the rice cooker, such as the amount of cooked rice, rice washing time (rotation time of the stirring rod 35), polishing time (rotation time of the stirring rod 35), and immersion time in the rice washing tank or the pot, are set by an operation panel (operation display device) 80 arranged on the lower half of the front wall 23a of the cover member 23 to the control unit of a computer outside the figure. It is equipped with a liquid crystal display screen 81 and can set the above conditions necessary for rice washing and cooking while displaying guidance on the functions and operation procedures of operating the surrounding switch group 82.

[0042] The operation of the above example will be described.

[0043] When the power switch is turned on, the cooking conditions are set according to each operation of the operation panel 80. After setting various cooking conditions and then turning on the start switch, the operation starts as shown in the cooking flow in Fig. 11.

[0044] That is, first, turn on the power switch (step 1), then input the setting of cooking rice conditions (step 2). When the start switch 75 is pressed (step 3), in step 4, the rice in the rice storage tank 4 is weighed by the weighing drum, and the set amount of rice is supplied to the rice washing tank 5, and the rice is washed in step 5.

[0045] The rice washing process in step 5 consists of a bran removal process of stirring the rice while pouring water, a rice polishing process of once supplying water and then draining the water and stirring the rice in a wet state, a rough rinsing process of stirring the rice at a predetermined water level, and a finishing rinsing process of stirring while the water overflows from the tank.

[0046] After the rice washing process in step 5, it proceeds to the water adjustment process in step 6. In step 7, the washed rice in the rice washing tank 5 and the water measured in the water adjustment in step 3 are dropped into the rice cooking pot 7 by opening and closing the discharge rice valve 139.

[0047] In step 8, the rice in the rice cooking pot 7 is immersed in water for a specified time. After the specified time has elapsed, ignition is performed in step 9, rice cooking is performed in step 10, steaming is performed in step 11, and cooking is completed in step 12, and the predetermined cooked rice is completed.

[0048] Regarding the immersion process, Figure 11 describes that it is performed in the rice cooking pot 7, but it may also be configured to perform the immersion process in the rice washing tank 5 and then drop it into the rice cooking pot 7 through the water adjustment process.

[0049] In addition, before turning on the start switch, a reservation screen can be output by operating the reservation switch, and the cooking completion time and the like can be set for reservation, so that cooking can be completed at the scheduled time.

[0050] Also, in the above embodiment, the water adjustment is in the form of sequentially reducing the water amount from the full state of the rice washing tank by opening the water level valve 65 to ensure a predetermined water amount. However, it is not limited to this form. For example, a configuration of providing a flow sensor to manage the water supply amount may also be used.

[0051] The blower fan 70 continues to operate continuously during the rice washing and cooking operation after the start switch is turned on, and is configured to operate for a predetermined time even after the cooking operation. By configuring it in this way, the inside of the rice washing tank 5 can be dried after the cooking operation is completed. Note that, after the cooking operation, the states of the drain valve 64 and the dropping valve 39 when the blower fan 70 is operating are set such that the dropping valve 39 is closed and the drain valve 64 is open. Therefore, the blown air from 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 at the same time enters the lower side of the rice washing tank 5 through the vertical pipe portion 62b and the drain tank 60, so that the drying efficiency can be improved compared to the air supply only from the upper side.

[0052] Since the drain tank 60 of the present embodiment is provided on the side of the rice washing tank 5 (the right side in the example of FIG. 1), it is easy to perform maintenance on the drain tank 60. Further, if the kettle lid opening and closing arm 81 described later is configured to move in the left-right direction and is positioned directly below the drain tank 60 in the lid-open position (FIG. 13), it will not interfere when the rice washing tank 5 is attached and detached.

[0053] Regarding the rice cooking kettle 7, in FIG. 14, the rice cooking kettle 7 is detachably provided with a container 31 and a semi-high-shaped rice cooking lid 32 with a high center that closes the main body opening of the container 31. A supply hole 32h is formed in the center of the rice cooking lid 32, and a slide shutter 33S as supply hole opening and closing means is detachably attached so as to close the supply hole 32h.

[0054] The slide shutter 33S is provided so as to be slidable along the guide rails 33a, 33a in the horizontal left-right direction, and is configured such that by opening the supply hole 32h, the rice and the adjusted water that fall from the rice washing tank 5 can be supplied into the rice cooking kettle 31. Note that the slide shutter 33S can open and close the supply hole 32h by engaging the knob 32c at the center of the rice cooking kettle 32 by the kettle lid opening and closing arm 81 and controlling the left and right movement, and is configured to be positioned directly below the drain tank 60 in the lid-open position as described above.

[0055] Next, an explanation will be given on a configuration that improves rice washing in the rice washing process by including microbubbles in the water to be supplied next.

[0056] As shown in FIG. 15, a tubular microbubble generator unit 81 with a microbubble generator 81a installed inside the main water distribution pipe 46 is detachably connected. The microbubble generator unit 81 is integrally formed with the faucet 80, and the microbubble generator 81a is provided on the downstream side of the faucet 80.

[0057] The microbubble generator unit 81 is provided with detaching tools 81b at the upper and lower ends respectively, and is configured to be detachable from the main water distribution pipe 46 respectively. Also, the microbubble generator unit 81 is arranged between the left and right support columns 1b and between the cross bar 1c and the cover member 23. In FIG. 15, for the sake of convenience, the faucet 80 is described facing backward, but it is operationally desirable to direct it obliquely forward. The microbubble generator 81a is supported by a support tool 82, and the support tool and the microbubble generator 81a are configured to be detachable by a tool.

[0058] The microbubble generator 81a is a known technology in which microbubbles (microscopic bubbles) enter the water when water passes through.

[0059] The water containing microbubbles that has passed through the microbubble generator 81a of the present embodiment enters the rice washing tank 5 through the upper water supply route or the lower water supply route.

[0060] In the rice washing process of this embodiment, water is supplied into the rice washing tank 5 from the lower water supply route and the rice is washed by the rotating action of the stirring rod 35. As a result, the action of microbubbles contained in the water can promote the removal of bran, other dust, etc. adhering to the surface of the rice. The same applies to the rice polishing process and the rinsing process. In the immersion process when it is carried out in the rice washing tank 5 after the rice washing process, water is supplied from the upper water supply route. Specifically, a predetermined amount of water is supplied at set time intervals (for example, at 3-minute intervals). In the immersion process, the stirring rod 35 is in a stopped state. At this time, since microbubbles easily act on the inner wall of the rice washing tank 5, it becomes difficult for the rice to adhere to the inner wall of the rice washing tank 5. When the rice in the rice washing tank 5 is dropped into the rice cooker 7 after the water adjustment process, it is possible to make it difficult for the remaining rice to adhere to the inside of the rice washing tank 5. Also, since microbubbles enter between the grains of rice, the grains of rice are easily separated from each other and the immersion effect becomes good. Regarding the water adjustment process after the immersion process, water is supplied from the lower water supply route. Similar to the immersion process, it is possible to make it difficult for the remaining rice to adhere to the inside of the rice washing tank 5. FIG. 16 shows another embodiment in which the microbubble generator 81a is attached to the water supply hose 51a of the lower water supply pipe 53.

Explanation of Signs

[0061] 3 Partition member 4 Rice storage tank 5 Rice washing tank 10 Measuring part 23 Cover member 70 Blower fan 62 Overflow pipe A Space part B Ventilation part (extension pipe part 62c) C Cavity part W Opening 71 Controller 73 Reticulated body 74 Reticulated body 80 Faucet 81 Microbubble generator unit 81a Microbubble generator

Claims

【Claim 1】 Cover the rice storage tank (23) and the metering unit with a cover member (23), Provide left and right support columns (1b) for supporting the cover member (23), Provide a main water supply pipe (46) for supplying water to the rice washing tank (5), and branch an upper water supply pipe (48) and a lower water supply pipe (53) from the main water supply pipe (46), Form an upper water supply route from the upper water supply pipe (48) via the upper water supply port (49) at the ceiling of the rice washing tank (5), Form a lower water supply route from the lower water supply pipe (53) through the water supply hose (51a) provided on the side of the rice washing tank (5) and the lower water supply port (52) via the jacket part (32), The upper water supply route supplies water in the immersion process, and the lower water supply route supplies water in the rice washing process and the water adjustment process after the immersion process, By detachably connecting a microbubble generator (81a) to the main water supply pipe (46), microbubbles are supplied to each of the rice washing process of washing rice, the immersion process of immersing rice, and the water adjustment process of supplying water adjustment water to the rice, The microbubble generator (81a) is arranged in the space between the left and right support columns (1b) and below the cover member (23), The microbubble generator (81a) is a microbubble generator unit (81) integrated with a water tap (80), The microbubble generator (81a) is provided on the downstream side of the water tap (80), and the microbubble generator unit 81 is provided with detaching tools 81b at the upper end and the lower end, respectively, and is configured to be detachable from the main water supply pipe 46, A rice washing device, characterized in that water containing microbubbles passes through the microbubble generator (81a) from the water tap (80) and then enters the rice washing tank 5 through the upper water supply route and the lower water supply route.

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