Rice washing device

Abstract

To provide a rice washer for efficiently washing white rice with nanobubble water through a nanobubble generator, the rice washer eliminating the need to clean a rice washing tank by removing bran that tends to adhere to an inner peripheral surface of the rice washing tank.SOLUTION: In the rice washer, white rice in a rice washing tank 5 is supplied with water from the bottom and washed by swirling the water by rotation of a stirring rod 35. An upper peripheral wall of the rice washing tank 5 is provided with an overflow opening 82. A water flow guide plate 84 from the center toward the overflow opening 82 is provided in an upper lid 83 of the rice washing tank 5.SELECTED DRAWING: Figure 6

Description

Technical Field

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

Background Art

[0002] The rice washing device described in Japanese Patent Application Laid-Open No. 2019-177355 supplies water to a rice washing tank into which raw rice is put, blows air to generate bubbles, and stirs the rice with a stirring rod to wash the rice and put it into a rice cooker.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The conventional rice washing device is an invention that utilizes the flowing water power from a water supply, rotates the flowing water from below in the tank, and discharges polishing water from above.

[0005] However, it is difficult to adjust the balance between the supply and drainage of tap water. When the supply is excessive, not only does overflow occur, but problems such as raw rice and bran sticking to the upper surface of the tank are likely to occur.

[0006] Also, in a rice washing device that efficiently washes raw rice with nanobubble water through a nanobubble generator, it is necessary to quickly discharge the washing water in which bran generated during the washing of raw rice has dissolved so that it does not adhere to the inner wall of the rice washing tank, thereby reducing the frequency of cleaning the rice washing tank.

[0007] An object of the present invention is to solve the above-described problems and needs.

Means for Solving the Problems

[0008] The problems of the present invention described above are solved by the following technical means.

[0009] The first invention is, In a rice washing device in which water is supplied from the bottom to the white rice in the rice washing tank (5) and the water is washed by the rotation of a stirring rod (35), an overflow port (82) is provided on the upper peripheral wall of the rice washing tank (5), and a water flow guide plate (84) is provided on the bottom of the top lid (83) of the rice washing tank (5), extending from the center of the rice washing tank (5) toward the peripheral wall in which the overflow port (82) is provided. This rice washing apparatus is characterized by having a flow sensor (27) installed in a water distribution pipe (46) that supplies water to a rice washing tank (5), and a nanobubble generator (80) installed downstream of the flow sensor (27). The second aspect of the present invention is: The first rice washing apparatus of the present invention is characterized by having a solenoid valve (86) for temporarily storing nanobubble water, which has been passed through a nanobubble generator (80) placed in a water distribution pipe (46), in a nanobubble tank (85) which is provided in an empty space S adjacent to the inclined hopper-shaped section at the bottom of the rice washing tank (5), and opening the solenoid valve (86) when washing white rice to supply nanobubble water to the rice washing tank (5) to wash the white rice. The third invention is, The first or second rice washing apparatus of the present invention is characterized by washing rice in a first step of simply supplying water to the white rice in the rice washing tank (5) and draining the water, and a second step of stirring and washing the rice after supplying the water. The fourth aspect of the present invention is: The eleventh rice washing apparatus of the present invention is characterized by a ventilation fan (70) installed on a support frame (1) that supports the rice washing tank (5), which dries the inside of the support frame (1) and the rice washing tank (5) by drawing in air during the operation of the rice cooking process and exhausting air when the rice cooking process is finished and the apparatus is in a paused state. First invention related to the present invention The present invention relates to a rice washing device that washes white rice in a rice washing tank 5 by supplying water from the bottom and swirling the water with the rotation of a stirring rod 35, characterized in that an overflow port 82 is provided on the upper peripheral wall of the rice washing tank 5, and a water flow guide plate 84 is provided inside the upper lid 83 of the rice washing tank 5 that directs the water flow from the center toward the overflow port 82.

[0010] A second invention related to the present invention This is the nanobubble generated by passing through a nanobubble generator 80 placed in the water pipe 46. bubble The water is deployed using the sloping empty space S in the rice washing tank 5. bubble It is temporarily stored in tank 85, and this nano bubble The process involves supplying water to the rice washing tank 5 for washing. First invention related to the present invention This will be used as a rice washing device.

[0011] Third invention related to the present invention This system is characterized by washing rice in a first step of simply supplying water to the white rice in the rice washing tank 5 and draining it, and a second step of stirring and washing the rice after supplying water. First or second invention related to the present invention This will be used as a rice washing device.

[0012] A fourth invention related to the present invention This system features a ventilation fan 70 installed on a support frame 1 that supports the rice washing tank 5. It is characterized by drawing in air from inside the support frame 1 and inside the rice washing tank 5 during the rice cooking process and exhausting air when the rice cooking process is finished and the system is in a paused state. First invention related to the present invention This will be used as a rice washing device. [Effects of the Invention]

[0013] In the first invention, The polished rice in the rice washing tank 5 is stirred and washed by the swirling water rotated by the stirring rod 35 while rising from the bottom. At this time, the bran dissolved in the water is guided by the water flow guide plate 84 along with the swirling water flow and quickly discharged from the overflow port 82, so that the bran does not stay in the rice washing tank 5 and does not adhere to the inner wall of the rice washing tank 5.

[0014] In the second part of this invention, While the supply water flows through the nanobubble generator 80, nano bubble is generated to form nano bubble which accumulates in the tank 85 for a long time as nano bubble water, and the polished rice can be effectively washed with the water containing nanobubbles during the rice washing process.

[0015] In the third invention, In the first step of simply supplying water to and draining the polished rice in the rice washing tank 5, the bran does not dissolve much and the polished rice is only immersed in the water without the bran adhering to the inside of the rice washing tank 5. In the second step of stirring the polished rice to dissolve the bran, the washing water quickly flows out from the overflow port 82, so the bran does not adhere to the inside of the rice washing tank 5 during the rice washing process.

[0016] In the fourth invention, The humid air in the support frame 1 is discharged to the outside of the support frame 1 together with the air sucked by the ventilation fan 70, and can be dried and hygienic by taking in air during the operation of the rice cooking process and exhausting air when the rice cooking process is completed and in a standby state.

Brief Description of the Drawings

[0017] [Figure 1] It is a front view of the rice washing and cooking device according to an embodiment of the present invention. [Figure 2] It is a side view of the same rice washing and cooking device. [Figure 3] It is an upper front sectional view of the same rice washing and cooking device. [Figure 4] It is a water supply piping diagram of the same rice washing and cooking device. [Figure 5] It is a perspective view showing the water supply piping at the upper part of the same rice washing tank. [Figure 6] (A) and (B) are upper perspective views of the rice washing tank, etc. [Figure 7] This is a partially perspective view of another embodiment in which a ventilation fan is installed in the same rice washing tank. [Figure 8] (A) and (B) are enlarged side cross-sectional views of another embodiment in which a ventilation fan is installed in the same rice washing tank. [Figure 9] (A), (B), and (C) are perspective views of the usage state of another embodiment of the same rice washing and cooking device. [Figure 10] This is a perspective view showing the case where a nanobubble tank is placed next to the rice washing tank shown above. [Modes for carrying out the invention]

[0018] Embodiments of the present invention will be described in detail below with reference to the drawings.

[0019] As shown in Figures 1 and 10, the support frame 1, which frames the rectangular tubular material vertically and horizontally, consists of a rectangular base frame 1a equipped with casters at the bottom, left and right support columns 1b, 1b of a predetermined width and height, and a plurality of horizontal crossbars 1c, 1c... supported between the left and right support columns 1b, 1b.

[0020] Flat partition members 3 are provided on the horizontal bar 1c above for mounting various pieces of equipment, and a rice storage tank 4 is provided above it. Below the rice storage tank 4 is a rice washing tank 5 with a conical inclined surface, and below the rice washing tank 5, a rice cooking device 6 is placed at intervals. This rice cooking device 6 consists of a rice cooking pot 7, a gas stand 8 for heating the pot, and a pull-out stand 9, etc. In Figure 2, the right side of the stand 9 is the front of the pull-out, and the left rear side is the retraction side.

[0021] As shown in Figure 3, the rice storage tank 4 consists of an upper main tank 4a with a rectangular cross-section and a lower funnel-shaped hopper section 4b, with a weighing drum case 10 attached to the lower end of the hopper section 4b.

[0022] The partition member 3 is provided with an opening 17 corresponding to the discharge port 16 of the rice storage tank 4, and is configured to dispense a predetermined amount of rice from the rice storage tank 4 to the rice washing tank 5 by rotating the measuring drum 13 for a predetermined number of rotations. Furthermore, the system is configured to automatically supply a predetermined amount by detecting the number of dispensing cycles using a rotation sensor (not shown).

[0023] The rice storage tank 2 and the measuring unit are covered on the outside by a cover member 23, with the left and right side walls and the rear side wall being fixed to the partition member 3 or the like as appropriate, and the lower half of the front side wall 23a is configured as a door that can be opened and closed using, for example, the right side when viewed from the front as a pivot point. The upper half of the front side wall 23b is connected to the left and right side walls and is configured to be detachable. Therefore, inspection and removal of the rice storage tank 2 and the drum case 10 can be performed with the lower half of the front side wall 23a open. Reference numeral 24 denotes a rectangular cover plate that detachably covers the main tank 4a from above.

[0024] As shown in Figure 3, the rice washing tank 5 has a receiving cylinder 31 at the top that guides the rice supplied from the drum case 10, a cylindrical body in the middle, and a hopper-like section at the bottom. A jacket section 32 is connected below the hopper-like section of the rice washing tank 5, and a filter 33 made of a mesh material with an opening small enough to prevent rice grains from leaking out is provided at the boundary between the hopper-like section and the jacket section 32.

[0025] A vertical hollow shaft 34 is provided in the center of the rice washing tank 5. Multiple stirring rods 35, 35..., which are formed by bending a rod-shaped body into an inverted L-shape, are attached to this hollow shaft 34 by welding or the like at their upper ends. The hollow shaft 34 is rotated by a rice washing motor 36 via a bevel gear mechanism 37, and the rotation is configured to stir the rice and water in the tank.

[0026] The hollow shaft 34 described above has a valve shaft 38 that passes through it and is loosely fitted to it so as to be able to slide up and down, and extends downward. A conical rice discharge valve 39 is attached to the lower end of the valve shaft 38 so as to be able to be attached and detached. The upper end of the valve shaft 38 is moved up and down by a cam 41 driven by a rice discharge valve drive motor 40, and by an interlocking mechanism such as a dropping arm described later, thereby controlling the opening and closing of the rice discharge valve 39. When the rice discharge valve 39 opens, the rice in the rice washing tank 5 falls into the inner pot of the rice cooking device 6 below.

[0027] Water is supplied to the rice washing tank 5 as shown in the water supply path diagram in Figure 4. A flow sensor 27 is installed in the main water supply pipe 46 that supplies water from the outside, and a branch pipe 28 branches it into an upper water supply pipe 48 and a lower water supply pipe 53. The upper water supply pipe 48 is supplied with nanobubble water through the first solenoid valve 29 and the nanobubble generator 80. bubble The water is connected to tank 85 and then to the jacket section 32 of rice washing tank 5 via a third solenoid valve 86. Additionally, the lower water supply pipe 53 is connected to the jacket section 32 of rice washing tank 5 via a second solenoid valve 30, supplying water to the rice washing tank 5. The water supplied from the main water distribution pipe 46 is measured by a flow sensor 27 located in front of the nanobubble generator 80, ensuring that the correct amount of water is supplied from the third solenoid valve 86 through the rice washing tank 5 to the rice cooker 7 for optimal cooking. Figure 5 is a perspective view showing the water supply piping at the top of the rice washing tank.

[0028] The upper water supply pipe 48 is the upper water supply route that passes through the partition plate 3 at the top of the rice washing tank 5, and the lower water supply pipe 53 is the lower water supply route that passes through the cover member 23 and the water supply hose 51a installed on the side of the rice washing tank 5 and the lower water inlet 52 and through the jacket part 32. In other words, water is supplied in two systems. Rice washing is performed in two steps: firstly, without rotating the stirring rod 35, the white rice in the rice washing tank 5 is soaked in water supplied from the lower water supply pipe 53 and then drained, and then water is supplied through the upper water supply pipe 48 bubble Water from tank 85 is supplied to rice washing tank 5, and the stirring rod 35 is used to wash the white rice. The supplied water is quickly discharged into the drain box 94 from the overflow port 82 at the top of rice washing tank 5 by the water flow guide plate 84 of the top lid 83.

[0029] nano bubbleTank 85 is a tank that surrounds the side of the rice washing tank 5 in a semicircular shape, as shown in Figure 10, and has a sufficient capacity to fill the rice washing tank 5, and stores nano bubble Washing with water effectively dissolves the rice bran. In other words, the rice washing tank 5 Using the inclined empty space S, nano bubble Tank 85 is deployed.

[0030] The strong water flow from the main water pipe 46 generates nanobubbles in the nanobubble generator 80. bubble By storing the water in tank 85 and opening the third solenoid valve 86 to supply water to the rice washing tank 5 when washing the white rice, the rice can be effectively washed with a small amount of water containing nanobubbles.

[0031] If the water flow from the main water pipe 46 is sufficiently strong, opening both the first solenoid valve 29 and the second solenoid valve 30 allows water to be supplied to the rice washing tank 5, enabling quick rice washing with less water.

[0032] In the above explanation, it was stated that the nanobubble generator 80 is installed in the upper water supply pipe 48, but the lower water supply pipe 53 also has a nanobubble generator 80 and nanobubble generator 80. bubble It would also be acceptable to install tank 85.

[0033] Furthermore, by piping the main water supply pipe 46 close to the rice cooker 6 to heat the water supply, the generation of nanobubbles by the nanobubble generator 80 can be promoted.

[0034] In Figure 3, reference numeral 55 denotes a shutter that is connected to the electric motor 15 to open and close the discharge port 16. The motor 15 is connected to the shutter support shaft 58 via link mechanisms 56 and 57, and is configured to be in an open state when the drum opening aligns with the discharge port 16. Therefore, 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 water from entering the measuring drum 13.

[0035] The drum case 10 is located to the left of the position where the upper water supply pipes 48, 48 are located, and the motor 40 for the rice discharge valve 39 and the rice washing motor 36 for driving the stirring rods 35, 35 are located to the right.

[0036] Figures 6(A) and 6(B) show the upper part of the rice washing tank 5. Multiple overflow ports 82 are provided on the upper peripheral wall of the rice washing tank 5, and the outer circumference of these ports is closed with a closing ring 91 via a packing, and a drain box 94 is attached. The drain box 94 is connected to an overflow pipe 62, so that the overflowing water flows into the drain box 60. The drain box 94 has an opening / closing lid 93 on the front so that it can be opened as needed to clean the inside.

[0037] Furthermore, a water flow guide plate 84 is provided at the bottom of the top lid 83 of the rice washing tank 5, extending from the center towards the end wall of the overflow port 90, to quickly direct the swirling water to the overflow port 82. The drain box 94 has a volume that quickly receives the water overflowing from the overflow port 82, ensuring that the overflow water flows without stagnation.

[0038] As shown in Figure 3, a drain box 60 is provided on the lower side of the rice washing tank 5. The drain box 60, which has a drain outlet, has its upper end connected to the drain box 94 of the rice washing tank 5 by an overflow pipe 62, and its inside is connected to the jacket section 32. Drainage from the jacket section 32 is performed by opening and closing the drain valve, and the water level in the rice washing tank 5 is adjusted while draining.

[0039] Normally, the drain box 60 is closed by a drain valve, but when draining water from the rice washing tank 5, the water is drained from the filter 33 of the jacket section 32 through the drain valve, the drain box 60, and the drain port. The drain valve is opened and closed by an appropriate opening and closing output. In addition, a water level sensor 68 is provided at the top of the rice washing tank 5 to detect the amount of water in the rice washing tank 5.

[0040] Incidentally, the overflow pipe 62 has a horizontal pipe section 62a connected to the upper end of the rice washing tank 5 and a vertical pipe section connected to the horizontal pipe section 62a, with the lower end of the vertical pipe section connected to the drain box 60. The upper end of the vertical pipe section 62b is extended upward, and this extended pipe section 62c passes through 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.

[0041] Within the cover member 23, the substantially closed space A between the lower part of the rice storage tank 4 and the partition member 3 houses the measuring unit 10, various drive units, piping, etc., but ventilation is ensured to prevent the accumulation of water vapor. Specifically, a ventilation fan 70 is placed on one side wall of the cover member 23 and is powered and driven during the operation of the device, so as to be able to supply outside air into space A. The air that enters space A circulates through space A as appropriate and is exhausted to the outside of the machine through the mesh holes described later. Therefore, the humidity inside space A, which receives water vapor rising during rice cooking, can be reduced by the circulation of outside air. A controller 71 is placed on the inner surface of the cover member 23 on the side facing the blower fan 70, and moisture can be removed from this controller 71 by providing ventilation to it as well. Furthermore, by positioning the upper end opening of the extension pipe 62c near the controller 71, for example, below the front of the controller 71, an appropriate airflow can be generated, allowing the air acting on the controller 71 to be efficiently introduced into the extension pipe 62c.

[0042] Figure 7 shows an embodiment in which the ventilation fan 70 is connected inside the rice washing tank 5. The ventilation fan 70 is connected to the overflow inspection window 89 of the top lid 83 of the rice washing tank 5 by a pipe 88, and by rotating the ventilation fan 70 in reverse, the air inside the rice washing tank 5 can be sucked in and dried.

[0043] Figure 8 shows a configuration in which a blower fan 70 is installed in a switching box 100 and a pipe 88 is connected to the overflow inspection window 89 of the top lid 83 of the rice washing tank 5. Inside the switching box 100, there is an on-off valve 101 that is rotated by a motor 103. When the on-off valve 101 closes the intake port 102, air is drawn in from the rice washing tank 5 by the pipe 88. When the pipe 88 side is closed, air is drawn in from the space A inside the cover member 23 through the intake port 102. The pipe 88 is removable with clamping bands 104 and 105.

[0044] A cavity C is provided at the bottom of the space A enclosed by the cover member 23 and the partition member 3, etc., to accommodate various harnesses (not shown). More specifically, the partition member 3 is formed by drawing and integrally molding the side walls, and a bottom plate 72 is provided below it in a lid-like manner to form the cavity C. A mesh body 74 made of ventilation mesh or perforated metal is attached to the partition member 3 at an appropriate location 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 section 62c (ventilation section B) is smaller than the mesh size of the mesh body 74 placed at an appropriate location on the partition member 3, thereby enhancing the effect of preventing foreign objects, especially tiny insects, from entering the space A.

[0045] Figure 9(A) shows an embodiment in which the cover plate 24 of the rice storage tank 4 is formed in a mountain shape, pivotally supported on the front side of the cover member 23 by a support shaft 96, and made rotatable back and forth by a switch 97. As shown in (B), when it is rotated forward, white rice is poured from the rice bag 98 onto the cover plate 24, and as shown in (C), when the cover plate 24 is rotated upward, white rice can be easily poured into the rice storage tank 4. [Explanation of symbols]

[0046] 1. Support frame 5. Rice washing tank 35 Stirring rod 80 Nanobubble Generator 82 Overflow Ports 83 Top lid 84 Water flow guide plate 85 nano bubble tank 70 Ventilation fan S Space

Claims

1. In a rice washing device in which water is supplied from the bottom to the white rice in the rice washing tank (5) and the water is washed by the rotation of a stirring rod (35), an overflow port (82) is provided on the upper peripheral wall of the rice washing tank (5), and a water flow guide plate (84) is provided on the bottom of the top lid (83) of the rice washing tank (5), extending from the center of the rice washing tank (5) toward the peripheral wall in which the overflow port (82) is provided. A rice washing apparatus characterized by having a flow sensor (27) installed in a water distribution pipe (46) that supplies water to a rice washing tank (5), and a nanobubble generator (80) installed downstream of the flow sensor (27).

2. The rice washing apparatus according to claim 1, characterized in that a solenoid valve (86) is provided to temporarily store nanobubble water, which has been passed through a nanobubble generator (80) placed in a water distribution pipe (46), in a nanobubble tank (85) which is provided in an empty space S adjacent to the inclined hopper-shaped section at the bottom of the rice washing tank (5), and when washing white rice, the solenoid valve (86) is opened to supply nanobubble water to the rice washing tank (5) to wash the white rice.

3. The rice washing apparatus according to claim 1 or 2, characterized in that it washes rice by a first step of simply supplying water to the white rice in the rice washing tank (5) and draining the water, and a second step of stirring and washing the rice after supplying the water.

4. The rice washing apparatus according to claim 1, characterized in that a ventilation fan (70) provided on the support frame (1) that supports the rice washing tank (5) dries the inside of the support frame (1) and the rice washing tank (5) by drawing in air during the operation of the rice cooking process and exhausting air when the rice cooking process is finished and the apparatus is in a paused state.

Images