JP7558597B2 - Unmanned rice cooking device - Google Patents

Description

The present invention relates to an unmanned rice cooking device that supplies, washes, and cooks rice and other grains as cooking ingredients. More specifically, the present invention relates to an unmanned rice cooking device that is composed of a grain supplying device that divides and stores fixed amounts of cooking ingredients and supplies them, a washer that receives the cooking ingredients from the supplying unit and washes the cooking ingredients supplied inside by rotating forward and reverse, and a cooking device consisting of a rice cooker that receives the cooking ingredients washed by the washer and cooks the cooking ingredients, and that automatically washes and cooks the ingredients, reduces the number of parts, and improves hygiene.

In general, to cook rice, a person takes the required amount of rice directly from the rice bin and places it in a container, washes it several times with water, and then transfers it to a general electric rice cooker or pressure rice cooker, adds water according to the type of rice, and cooks it by heating it using a heating device.

The conventional rice cooking method described above requires the rice to be transferred manually and washed, and since the rice is simply cooked using an electric rice cooker or the like, it causes many inconveniences and difficulties for dual-income couples, singles, the elderly, infirm, and children.

In the past, various technologies that combine a rice bin and a rice cooker have been developed to solve the problems mentioned above, and in recent years, many unmanned automatic rice cooking devices have been disclosed that do not require human intervention from supplying rice to washing and cooking by supplying a fixed amount of rice from the rice bin, washing the rice with a rice washing means, and then supplying the washed rice and water for cooking the rice to a rice cooker that is heated with a heating means.

However, conventional unmanned rice cooking devices have a very complicated structure, and have the drawback that when washing the rice with the operation of the rice washing means such as rotors, the rice germ falls off, destroying nutrients.

Conventional unmanned rice cookers are equipped with a pressure valve and valves for water and ingredients on the lid and inner pot of the rice cooker. However, these valves are vulnerable to high temperatures and pressures, and they have to be replaced and repaired from time to time.

Moreover, the rice bins in which the ingredients for cooking rice are stored are not equipped with any means to prevent deterioration of the ingredients or to exterminate rice insects, making it difficult to maintain the quality of the ingredients and therefore unable to guarantee the best taste of rice.

In addition, most conventional unmanned rice cooking devices were designed for large facilities such as schools and the military, where rice needs to be cooked for many people at the same time, and were not suitable for use in ordinary households.

To solve these problems, the applicant invented an "unmanned rice cooker" in Korean Patent Registration No. 10-2048872 (registration date: November 20, 2019), which uses a washing drum for washing rice as the lid of the rice cooker. By making the main body of the washing drum the lid of the rice cooker, the configuration of the rice cooker has been simplified so that rice can be cooked without installing separate valves for supplying water and grains to the lid.

Korean Patent No. 10-2048872 Korean Utility Model Publication No. 20-2000-0012862 (July 5, 2000)

In order to solve the above problems, the present invention provides an unmanned rice cooking device that includes a grain supplying device that divides and stores rice and miscellaneous grains as cooking ingredients and supplies them, a washer that receives the cooking ingredients from the grain supplying device and washes the ingredients while rotating forward and backward, and a cooking device that receives the cooking ingredients washed by the washer and cooks the cooking ingredients. After the cooking ingredients are taken in, the cooking device is raised to the upper side and the washer is lowered so that the main body of the washer itself becomes the inner pot lid (cap). This simplifies the structure of the rice cooking device and makes it possible to cook rice without installing separate valves on the lid to control the steam pressure of the cooking device and to allow water and grains to flow in, thereby providing a very economical unmanned rice cooking device.

Another object of the present invention is to provide an unmanned rice cooking device that can prevent the occurrence of gaps between the inner pot and the heater, improve thermal conductivity, and reduce cooking time by raising the heater that heats the inner pot when the cooking device is raised to the upper side.

Another object of the present invention is to provide an unmanned rice cooking device in which the water inlet and outlet hoses connected to the washing drum are extendable and move in accordance with the up and down movement or rotational movement of the washing drum, so that washing water can be constantly supplied and discharged even if the position of the washing drum changes.

Another object of the present invention is to provide an unmanned rice cooking device with a separate structure that allows the grain feeder, washer, and cooker to be inserted and removed from the main frame in a drawer-type manner, resulting in high space utilization and making it easy to clean and repair the washer.

Another object of the present invention is to provide an unmanned rice cooking device that is equipped with a blade for washing the rice ingredients supplied to the inside of the washer, and is divided into a washing blade that washes the rice ingredients while mixing them and minimizing the loss of rice germ and other particles, and a squeeze blade that sweeps the washed rice ingredients and supplies them to the inner pot, thereby enabling quick washing while minimizing the destruction of nutrients in the rice ingredients.

Another object of the present invention is to provide an unmanned rice cooking device that supplies water to the inner pot and does not leave residual grains in the washing drum by spraying cleaning water from inside and outside the blade to wash off the ingredients that have adhered to the blade.

Another object of the present invention is to provide a hygienic unmanned rice cooking device that evaporates moisture present in the washing drum and prevents the growth of bacteria by heating the washing drum with the heat generated in the inner pot during cooking.

Another object of the present invention is to provide an unmanned rice cooking device that provides a structure that allows for quick drainage without clogging the water outlet hose due to foreign matter generated during the washing of rice cooking ingredients, minimizes the deposition of residual foreign matter on washed grains, and shortens the washing time.

Another object of the present invention is to provide an unmanned rice cooking device suitable for use in single-person households as well as households that cook small amounts of rice by storing the ingredients for cooking rice in portions and supplying only the required amount for cooking rice.

Another object of the present invention is to provide an unmanned rice cooking device with a simplified configuration, in which the ingredients for cooking flow in through an open inlet slit at the top of the washer and the ingredients for cooking are discharged by positioning the inlet slit downward.

Another object of the present invention is to provide an unmanned rice cooking device that can accurately measure and mix multiple grains by using a grain measuring device that is installed on top of a storage drum that stores grains and can measure the grains contained in each cartridge to confirm the type and amount of grain.

Another object of the present invention is to provide an unmanned rice cooking device that can maintain the best taste of the cooked rice by maintaining a vacuum pressure inside the storage drum when storing the ingredients for cooking rice, in order to maintain the quality of the ingredients for cooking rice and to suppress the occurrence of insects.

Another object of the present invention is to provide an unmanned rice cooking device with improved versatility, which is equipped with a water purification filter and purifies tap water supplied from the outside, thereby not only supplying clean washing water and cooking water, but also directing the purified water that has passed through the water purification filter into a separate pipe so that it can be drawn from a water purification tap, making it usable as a water purifier, and storing the washing water used to wash the ingredients for cooking in a separate storage tank so that it can be used as rinsing water.

Another object of the present invention is to provide an unmanned rice cooking device that is convenient to use and has a communication unit that allows the user to mix, wash, and cook the required amount of grains remotely using a mobile device.

To achieve the above object, the present invention includes a grain supplying device (100) including a storage drum (110) for storing and storing cooking ingredients; a cleaning device (200) installed under the grain supplying device (100) for cleaning the cooking ingredients; a cooking device (300) installed under the cleaning device (200) for cooking rice; and a main body frame (400) in which the grain supplying device (100), cleaning device (200), and cooking device (300) are arranged; the cleaning device (200) receives the supply of cooking ingredients discharged from the grain supplying device (100) through an entrance slit (211), and includes a cleaning drum (210) in which a blade 220 for cleaning the cooking ingredients is arranged, and a drum cage (230) arranged outside the cleaning drum (210), and the cooking device (300) receives the supply of the washed cooking ingredients from the entrance slit (211) of the cleaning drum (210). The cooking device includes an inner pot (310) and a cooker cage (330) equipped with a heater (331) for heating the inner pot (310). The main frame (400) is located between the grain supply device (100) and the cleaning device (200) and includes a supply guide (410) inclined to guide the rice cooking ingredients to the inlet slit (211), and a sealing adapter (414) arranged between the cleaning device (200) and the cooking device (300). When the rice cooking ingredients are supplied to the cleaning drum (210) and discharged from the cleaning drum (210), the drum cage (230) is located at a first height, and when the drum cage (230) is located at a second height, the inner pot (310) is sealed, and when the drum cage (230) is located at a third height, the storage drum (110) is sealed, and the second height is lower than the first height and the third height is higher than the first height.

In addition, in the present invention, at the third height of the drum cage (230), the outer periphery of the cleaning drum (210) is in close contact with the lower end of the supply guide (410); and at the second height of the drum cage (230), the outer periphery of the cleaning drum (210) is in close contact with the upper end of the sealing adapter (414).

In addition, the cleaning drum (210) of the present invention is in close contact with the upper part of the sealing adapter (414) at the first outer periphery (218) and in close contact with the lower end of the supply guide (410) at the second outer periphery (219), and the first outer periphery (218) and the second outer periphery (219) are at different positions.

In addition, the present invention provides a rotating screen (236) that rotates in the outer circumferential direction on the outside of the cleaning drum (210), and at the second height of the drum cage (230), the third outer circumferential edge (238a) of the rotating screen (236) is in close contact with the upper end of the sealing adapter (414), and at the third height of the drum cage (230), the fourth outer circumferential edge (238b) of the rotating screen (236) is in close contact with the lower end of the supply guide (410).

The rotating screen (236) of the present invention has an open surface (237) that opens in the length direction and a closed surface (238), a long hole (239a) through which the central axis (212) of the washing drum passes is formed on the front surface, and a hose through hole (239) through which the drum hose (640) that supplies or discharges washing water to the washing drum (210) passes is formed with an area larger than the long hole (239a), the rotating screen (236) rotates at the first height of the drum cage (230), and when the rice cooking ingredients are introduced into or discharged from the washing drum (210), the open surface 237 of the rotating screen (236) is in the same direction as the inlet slit (211).

In addition, a vacuum suction port (412) through which air moves is formed on one side of the supply guide (410) of the present invention, and air inside the supply guide (410) is sucked in through the vacuum suction port (412) by operating a vacuum pump (413) at the third height of the drum cage (230).

In addition, one side of the washing drum (210) of the present invention is provided with a drum outlet (215) through which the washing water used to wash the rice cooking ingredients is discharged, and a filter mesh (216) is attached to the inside of the drum outlet (215) to prevent the rice cooking ingredients from being discharged, and the filter mesh (216) is formed with an area larger than the cross-sectional area of the drum outlet (215), and a filter chamber 217 is disposed so as to be spaced apart from the filter mesh (216) and the drum outlet (215).

In addition, a separate water outlet (213a) is formed inside or on the top of the blade (220) of the present invention, through which the washing water flowing in from the outside is discharged, and the washing water is discharged from the separate water outlet (213a) into the inside of the washing drum (210).

The inner pot (310) of the present invention is provided with a handle (311) on one side and has a plurality of protrusions (312a) formed on the upper end, and the cooker cage (330) has a protrusion groove (333) formed on the upper surface that is connected to the protrusions (312a), and the protrusions (312a) of the inner pot (310) and the protrusion grooves (333) of the cooker cage (330) are connected.

In addition, in the cooker (300) of the present invention, the inner pot (310) is provided with a handle (311), the cooker cage (330) is provided with a contact lever (336) on the front, a rising rail (338) inclined upward toward the rear at the upper end, and a rising cam (337) that rotates upward when the contact lever (336) is pressed. When the inner pot (310) is inserted into the rising rail (338), the edge (312) comes into contact with the upper end of the cooker cage (330), and the rising cam (337) raises the rising rail (338) so that the edge (312) comes into contact with the upper end of the cooker cage (330).

In addition, in the cooker (300) of the present invention , when the drum cage (230) descends to the second height, the heater (331) and the inner pot (310) are simultaneously elevated.

In addition, in the cooker (300) of the present invention, the cooker cage (330) further includes an inner pot drawer (320) in which a sliding groove (332) is formed between the heater (331) and both side walls, and protruding surfaces (323) protruding from both side walls are inserted into the sliding groove (332) to form a handle groove (321) in which the handle (311) of the inner pot (310) is seated.

The drum cage (230) or cooker cage (330) of the present invention is provided with a lifting wing (235) extending from the side, a lifting frame (511) connected to the lifting wing (235) is arranged along the main frame (400), and a lifting machine is provided to raise and lower the lifting frame (511).

The elevator of the present invention is driven by one of a linear motor (517), a cylinder (516), or a screw (518).

In addition, the main frame (400) of the present invention is provided with a pipeline (600), which includes a water purification filter (610) that receives water from the outside and purifies it; a water purification tap (630) that receives purified water from the water purification filter (610) and draws the purified water to the outside; and an expandable drum hose (640) including a water inlet hose (641) that supplies purified water supplied from the water purification filter (610) to the washing drum (210) and a water outlet hose (642) through which washing water generated in the washing drum (210) is discharged; and the water inlet hose (641) and the water outlet hose (642) are connected in front of the washing drum (210).

The present invention also includes a control module that has a wireless communication module disposed on one side and receives cooking commands or washing commands from a smartphone application to execute grain selection, cooking control, washing control, or washing drum rotation control.

The unmanned rice cooking device of the present invention includes a grain supplying device that divides and stores rice, miscellaneous grains, and other rice cooking ingredients and supplies them; a washer that receives the rice cooking ingredients from the grain supplying device and washes the ingredients supplied inside by rotating forward and reverse; and a cooker that receives the rice cooking ingredients washed by the washer and cooks the rice cooking ingredients. After the rice cooking ingredients are taken in, the cooker is raised to the upper side and the washer is lowered so that the main body of the washer itself becomes the inner pot lid (cap). This simplifies the structure of the rice cooking device and makes it possible to cook rice without installing separate valves on the lid to control the steam pressure of the cooker or to allow water and grains to flow in, and has the advantage of being very economical.

In addition, the present invention has the advantage that when the cooking device is raised to the upper side, the heater that heats the inner pot is also raised, preventing the occurrence of gaps between the inner pot and the heater, improving thermal conductivity, and reducing the cooking time.

In addition, the present invention has the advantage that the inlet and outlet hoses connected to the washing drum are extendable and move in accordance with the up and down movement or rotational movement of the washing drum, so washing water can always be supplied and discharged even if the position of the washing drum changes.

In addition, the present invention has the advantage that the grain feeder, cleaner, and cooker can be inserted and removed from the main frame in a drawer-type manner, making it possible to utilize space efficiently and providing a separate structure that makes it easy to clean and repair the cleaner.

The present invention also has a blade that washes the rice ingredients supplied to the inside of the washer. The blade is divided into a washing blade that mixes the rice ingredients while minimizing the loss of rice germ and other particles, and a squeeze blade that sweeps the washed rice ingredients into the inner pot, providing the advantage of quick washing while minimizing the destruction of nutrients in the rice ingredients.

The present invention also has the advantage of supplying water to the inner pot while preventing residual grains from remaining in the washing drum by spraying cleaning water from inside and outside the blade to wash off the rice cooking ingredients on the blade.

The present invention also has the hygienic advantage of heating the washing drum with the heat generated in the inner pot during cooking, which evaporates the moisture in the washing drum and prevents the growth of bacteria.

The present invention also provides a structure that allows for quick drainage without clogging the drain hose due to foreign matter generated during the washing of rice ingredients, and has the advantage of minimizing the deposition of residual foreign matter on washed grains and shortening the washing time.

The present invention also has the advantage that it is suitable for use in single-person households as well as households that only need to cook a small amount of rice, by storing the ingredients separately and supplying only the required amount to cook rice.

The present invention also has the advantage of simplifying the structure by allowing the ingredients to flow in through an open inlet slit at the top of the washer and discharging the ingredients by positioning the inlet slit downward.

The present invention also has the advantage that a grain measuring device that is installed on top of the storage drum and can measure grains measures the grains in each cartridge to confirm the type and amount of grain, allowing for accurate weighing and blending of multiple grains.

The present invention also has the advantage that when the ingredients for cooking rice are stored inside the storage drum, the inside is maintained in a vacuum pressure state to maintain the quality of the ingredients for cooking rice and to suppress the infestation of insects, thereby maintaining the best taste of the finished rice.

The present invention also has a water purification filter that purifies tap water supplied from the outside, so that it can be used as a water purifier, not only to supply clean washing water and cooking water, but also to guide the purified water that has passed through the water purification filter into a separate pipe so that it can be drawn from a water purification tap. It also has the advantage of being more versatile, as the washing water used to wash the ingredients for cooking can be stored in a separate storage tank and used as washing water.

The present invention also has the advantage of being convenient to use, as it is equipped with a communication unit and can remotely mix, wash, and cook the required amount of grains using a mobile device.

1 is an overall perspective view of an unmanned rice cooking device according to the present invention; 2 is a perspective view of the unmanned rice cooking device according to the present invention, showing a state in which a grain supplying device, a cleaning device, and a cooking device are pulled out from a main body frame. FIG. 2 is a perspective view of a main body frame in the unmanned rice cooking device according to the present invention. FIG. 1A and 1B are diagrams illustrating a grain supplying device in an unmanned rice cooking device according to the present invention, in which FIG. 1A and 1B are perspective views of a cleaning device in an unmanned rice cooking device according to the present invention, where FIG. 1A is a perspective view from the front, and FIG. 2 is a separated view of a washer in the unmanned rice cooking device according to the present invention. FIG. A cross-sectional view of a multi-stage motor in the unmanned rice cooking device of the present invention. 1 is a cross-sectional view of the unmanned rice cooking device of the present invention, showing the state in which ingredients for cooking inside the cleaning drum are supplied to a cooker. 1 is a cross-sectional view of the unmanned rice cooking device according to the present invention, showing a state in which the cleaning drum is in close contact with the sealed adapter. 1 is a cross-sectional view of the unmanned rice cooking device according to the present invention, showing a state in which the cleaning drum is in close contact with the supply guide. 1 is a perspective view of a washer equipped with a rotating screen in the unmanned rice cooking device according to the present invention; 2 is an exploded view of a washer equipped with a rotating screen in the unmanned rice cooking device according to the present invention; FIG. 4 is a flow chart showing an operation state of a washer equipped with a rotary screen in the unmanned rice cooking device according to the present invention. FIG. 1 is a diagram showing an unmanned rice cooking device according to the present invention, in which a cooking vessel is provided with a circular inner pot; FIG. 1 is a diagram showing an unmanned rice cooking device according to the present invention, in which a cooking vessel is provided with an inner pot formed in a square shape, (a) being an exploded view and (b) being an assembled view. FIG. 1 is a cross-sectional view of a state before the inner pot is lifted, and FIG. 2 is a cross-sectional view of a state after the inner pot is lifted, in an unmanned rice cooking device according to the present invention. 1A is a separate view of a cooking device that can be raised and lowered in an unmanned rice cooking device according to the present invention, and FIG. 1B is a separate view of the cooking device as seen from below. 1A is a perspective view of a lifting body in an unmanned rice cooking device according to the present invention, FIG. 1B is a perspective view of a lifting body equipped with a linear motor as an elevator, and FIG. 1C is a perspective view of a lifting body equipped with a screw as an elevator. 1 is a perspective view of the unmanned rice cooking device according to the present invention, in which a pipeline is provided on a main body frame. FIG. 1A and 1B are diagrams showing a pipeline in an unmanned rice cooking device according to the present invention, where (a) is a perspective view seen from the front, and (b) is a perspective view seen from the rear.

The following describes a preferred embodiment of the present invention with reference to the accompanying drawings so that a person having ordinary skill in the art can easily implement the invention.

Figures 1 and 2 are perspective views showing an unmanned rice cooking device according to the present invention, and Figure 3 is a perspective view showing the main body frame of the unmanned rice cooking device according to the present invention.

As shown in FIG. 1 to FIG. 3, the unmanned rice cooking device of the present invention is a device that stores rice cooking ingredients, washes the rice cooking ingredients when rice cooking starts, and heats the washed rice cooking ingredients to automatically cook rice without human intervention.
A grain supplier 100 that stores rice, miscellaneous grains, and other ingredients for cooking rice and supplies the stored ingredients for cooking rice when cooking rice;
A washer 200 disposed under the grain supplier 100, which receives the rice cooking ingredients from the grain supplier 100 and also receives water to wash the rice cooking ingredients and remove foreign matter;
a cooker 300 disposed under the washer 200, receiving the rice cooking ingredients that have been washed by the washer 200, storing the rice cooking ingredients inside, sealing the ingredients, and heating the ingredients to cook rice;
The apparatus includes a main frame 400, a lifting body 500, and a pipeline 600, which are combined with a structure that provides a frame for disposing and supporting the grain supplying device 100, the cleaning device 200, and the cooking device 300, and helps the processes of storing, supplying, cleaning, and cooking the rice ingredients to be smoothly performed;
The grain supplying device 100 includes a storage drum 110 for storing ingredients for cooking rice and supplying the ingredients for cooking rice to a cleaning device 200 through a grain outlet 114 located at the bottom, a grain measuring device 120 for measuring the type and amount of grains contained in the storage drum 110 so that the grains can be accurately measured and mixed, and a drum tray 130 for inserting and extracting the storage drum 110 by rotating around a tray hinge 132 located on one side of the drum tray 130, which is attached to the bottom of the storage drum 110.
The washer 200 is composed of a washing drum 210, which receives the rice cooking ingredients from an inlet slit 211, washes the rice cooking ingredients, and then rotates downward to supply the washed rice cooking ingredients to the cooker 300, a blade 220 that rotates forward and backward inside the washing drum 210 and sweeps away foreign matter attached to the rice cooking ingredients while washing them, and a drum cage 230 that is disposed outside the washing drum 210 and rises and falls to a certain height during storage, washing, and cooking.
The cooker 300 includes an inner pot 310 that receives the washed rice ingredients from the washing drum 210 and stores the rice ingredients, a heater 331 that applies heat to the lower part of the inner pot 310 to cook rice, and a cooker cage 330 that is a frame that supports the inner pot 310 and has the heater 331.
The main body frame 400 is arranged between the grain feeder 100 and the cleaner 200, and is configured with a supply guide 410 for guiding the cooking ingredients discharged from the storage drum 110 to enter the inside of the cleaner 210, a vacuum pump 413 for maintaining the inside of the storage drum 110 at a vacuum pressure, a sealing adapter 414 arranged between the cleaner 200 and the cooker 300, and is formed so that the upper end coincides with the outer periphery of the cleaner 210 and the lower end is formed so that the edge 312 of the inner pot 310 is in close contact with the sealing adapter 414, and an electronic app communication that can control a series of processes such as storage, cleaning, and cooking using a mobile device.
The lifting body 500 is disposed on both sides of the main body frame 400 and provides power for lifting the drum cage 230 or the cooking device cage 330,
The pipeline 600 is formed in a line to supply purified washing water to the washing drum 210 and to utilize the washing water discharged from the washing drum 210 .

The unmanned rice cooking device of the present invention stores the ingredients for cooking rice inside the storage drum 110 at the top, and when cooking rice is in progress, the ingredients for cooking rice are supplied to the inside of the cleaning drum 210 through the supply guide 410.

The cleaning drum 210, located at the bottom of the storage drum 110, is positioned so that the inlet slit 211 faces upward when the cooking ingredients are supplied, stores the cooking ingredients inside, and washes them with cleaning water supplied from the pipeline 600. At this time, the blade 220 rotates forward and backward to sweep and remove foreign matter attached to the cooking ingredients, and after washing, the cleaning water is discharged into the cleaning drum 210 through the pipeline 600. After that, when the washed cooking ingredients are supplied to the inner pot 310, the cleaning drum 210 rotates to position the inlet slit 211 facing downward, and the blade 220 rotates to supply the cooking ingredients to the inner pot 310 without generating any remaining cooking ingredients.

The rice is cooked by transferring heat generated by the heater 331 to the inner pot 310, which has been supplied with the cleaned cooking ingredients. The inner pot 310 is sealed while being in close contact with the cooker cage 330 or the sealing adapter 414, so rice can be cooked at high temperature and pressure without pressure leakage.

The rice cooking ingredients stored inside the storage drum 110 are supplied through an entrance slit 211 formed in the cleaner 200, and after the rice cooking ingredients have been washed inside the cleaner 200, the cleaner 200 is rotated to position the entrance slit 211 downward, guiding the rice cooking ingredients to fall into the inner pot 310. Since the rice cooking ingredients are supplied and discharged through the entrance slit 211 in the cleaner 200, it has the advantages of simplifying the structure for moving the rice cooking ingredients, making maintenance and repairs easy, and being economical.

Figure 4 is a perspective view showing the grain supply device in the unmanned rice cooking device of the present invention.

As shown in FIG. 4, in the grain feeder 100 that stores the rice cooking ingredients and supplies them to the cleaner 200 located at the bottom, the storage drum 110 is a drum that stores the rice cooking ingredients, and is formed in a container shape with a hollow interior and open top and bottom. The grain feeder 100 may have a single or multiple storage drums 110.

Inside the hollow interior, multiple partitions 111 are arranged circumferentially around the center to form multiple cartridges 112, which are divided spaces, and the cartridges 112 can be filled with and stored with cooking ingredients such as rice and grains. By storing cooking ingredients in separate cartridges 112 and supplying only the required amount, it is also suitable for use in homes that cook a small amount of rice and single-person households. At this time, one of the cartridges 112 is closed and cooking ingredients cannot be added.

A plate-shaped opening/closing plate 113 is provided at the bottom of the storage drum 110. The opening/closing plate 113 closes the storage drum 110, whose bottom is open, to prevent the rice ingredients stored inside from being discharged.

The outer periphery of the opening/closing plate 113 is formed with sawtooth teeth, which mesh with the opening/closing drive gear 116 provided on one side of the main body frame 400, allowing the opening/closing plate 113 to rotate.

A grain discharge port 114 is formed on one side of the opening/closing plate 113 so that the rice cooking ingredients stored in the cartridge 112 can be discharged. The grain discharge port 114 rotates and moves as the opening/closing plate 113 rotates by the opening/closing drive gear 116, and can move from one cartridge 112 to another cartridge 112 to discharge the rice cooking ingredients stored in the corresponding cartridge 112. By driving the opening/closing drive gear 116, the grain discharge port 114 can be moved to the cartridge 112 in which the rice cooking ingredients to be discharged are stored.

This allows the grains stored in any one of the cartridges 112 to be discharged and supplied in a fixed amount. Even if only one type of grain is stored in each cartridge 112, by moving the position of the grain discharge port 114, the cartridges 112 containing other types of grains can be opened and discharged, which has the advantage that the grains can be mixed in a fixed amount even when cooking mixed grain rice.

In addition, a central shaft insertion hole 115 is further formed in the center of the opening and closing plate 113, into which the tray central shaft 131 of the drum tray 130 is inserted.

A grain measuring device 120 is provided on the top of the storage drum 110 to measure the grain contained in each cartridge 112.

The grain measuring machine 120 includes a measurement recognition module 122 that measures the type and amount of grain stored in each cartridge 112, and a light 121 equipped with a light emitting means to enable the measurement recognition module 122 to perform accurate measurements.

The measurement recognition module 122 is a module that takes an image of the grain stored in each cartridge 112 to recognize the type and measures the height to recognize the amount, and includes at least one of a camera or a sensor. The measurement recognition module 122 may be provided in multiple units, and may be positioned on the top of each cartridge 112 and measure the type and amount of grain stored in each cartridge 112 at a fixed position. Alternatively, a single measurement recognition module 122 and a rail 123 that can move in a circumferential direction to change the position of the measurement recognition module 122 may be provided, and the measurement recognition module 122 may circulate through each cartridge 112 along the rail 123 to measure the type and amount of grain stored. In this embodiment, a single measurement recognition module 122 is provided movably along the rail 123 as shown in FIG. 4(b).

Alternatively, as shown in FIG. 4(a), a sensor 117 provided in each cartridge 112 of the storage drum 110 can be used to measure the amount of grain contained in each cartridge 112. The sensor 117 is disposed in each cartridge 112 to grasp the amount of grain, and one or more measurement recognition modules 122 are disposed on the top of the cartridge 112, and the type of grain is recognized by the sensor 117 and the measurement recognition module 122.

A light emitting means, illuminating lamp 121, is provided so that the measurement recognition module 122 can accurately photograph and measure the grains of each cartridge 112. The light emitting lamp 121 emits light, and the measurement recognition module 122 can obtain a high quality image when photographing and measuring the grains, thereby improving the accuracy of the measurement values.

The grain measuring machine 120 can take an image of the grain stored in each cartridge 112 using the measurement recognition module 122 and perform a calculation to compare it with a representative image of the grain stored in an internal memory (not shown) or a server. The type of grain stored in the cartridge 112 can be recognized by extracting the grain that is most similar to the image taken by the measurement recognition module 122.

The grain measuring device 120 is used to determine the type and amount of grain, and the rotation of the opening and closing plate 113 is controlled based on the determined information, allowing the type and amount of grain discharged to be adjusted, making it possible to mix multiple grains in fixed quantities.

The lower edge that contacts the storage drum 110 may further be provided with packing to shield the storage drum 110 in which the grain is stored.

A drum tray 130 is further provided at the bottom of the storage drum 110 to assist in removal and insertion from the main frame 400.

The drum tray 130 guides the storage drum 110 to be pulled out from the main frame 400 when grain is fed into the storage drum 110, and supports the weight of the storage drum 110 that increases after grain is fed. It includes a support plate 133 that supports the lower edge of the storage drum 110, a tray central shaft 131 that is provided in the center and inserted and coupled to the central shaft insertion port 115 of the opening/closing plate 113, and a tray hinge 132 provided on one side to rotate around the central shaft.

The support plate 133 supports the storage drum 110 at its edge, and the inside is open so that grain can be discharged from the cartridge 112. Packing may further be provided at the edge that abuts against the storage drum 110 to enhance the sealing force.

The drum tray 130 can be fixed to the storage drum 110 by inserting and connecting the tray central axis 131 of the drum tray 130 into the central axis insertion hole 115 formed in the opening and closing plate 113.

The tray hinge 132 is attached to one side of the main body frame 400. The storage drum 110 can be inserted into and removed from the main body frame 400 while rotating around the tray hinge 132 as a central axis, and its movement path can be guided.

The drum tray 130 acts as a support structure that can support the weight that increases when grain is added to the inside of the storage drum 110, and also guides the insertion and removal of the storage drum 110.

The storage drum 110 is pulled out using the drum tray 130, and the cooking ingredients are dispensed inside. The grain measuring device 120 is used to measure the type and amount of grain stored inside to set the mixing ratio, and the rotation of the opening and closing plate 113 is controlled according to the mixing ratio, and the cooking ingredients are discharged downward from the grain discharge port 114.

The rice ingredients discharged downward first pass through the supply guide 410 shown in FIG. 3. The supply guide 410 is disposed between the grain supply device 100 and the washer 200, and guides the rice ingredients discharged from the grain supply device 100 so that they can be supplied to the inside through the inlet slit 211 of the washer 200.

The supply guide 410 is formed to be inclined downward toward the supply slit 411, and the rice cooking ingredients that fall into the supply guide 410 are guided to the open supply slit 411, fall into the entrance slit 211 side of the cleaning drum 210, and are supplied to the inside of the cleaning drum 210. The lower end of the supply slit 411 is formed to match the shape of the cleaning drum 210 or the rotary screen 236 described later.

At this time, in order to reduce the overall height of the present invention, the inward downward inclination only needs to be slightly greater than horizontal. By combining with a vibration motor (not shown) to vibrate the supply guide 410 and assist in the movement of the rice ingredients, the rice ingredients can be smoothly guided and discharged even with a small inclination. Furthermore, by forming the supply guide 410 with a low inclination, the overall height of the present invention can be reduced, making it easy to manufacture in a small size.

Also, a sealing adapter 414 as shown in FIG. 3 is disposed between the cleaning device 200 and the cooking device 300. The upper end of the sealing adapter 414 may be formed to match the shape of the cleaning drum 210 or the rotary screen 236 and be in close contact with it. The lower end of the sealing adapter 414 may be in close contact with the edge 312 of the inner pot 310 and be sealed. A steam outlet 415 is formed on one side through which steam generated by pressure buildup inside the inner pot 310 is exhausted.

Figures 5 and 6 are perspective views showing the cleaning device in the unmanned rice cooking device of the present invention.

As shown in Figures 5 and 6, the washer 200 is located at the bottom of the grain supplying device 100 and performs a process of washing the cooking ingredients supplied from the grain supplying device 100 before heating them in the cooking device 300. It is composed of a washing drum 210 that receives the cooking ingredients from an inlet slit 211, washes the cooking ingredients, and then rotates downward to supply the washed cooking ingredients to the cooking device 300, a blade 220 that is installed to rotate forward and backward inside the washing drum 210 and cleans the cooking ingredients while sweeping away foreign matter, and a drum cage 230 that is located outside the washing drum 210 and rises and falls to a certain height during storage, washing, and cooking.

The washing drum 210, where the rice cooking ingredients are washed, is opened on one side and the rice cooking ingredients are supplied and discharged through an entrance slit 211, and the rice cooking ingredients and washing water are supplied to the hollow interior.

The washing drum 210 has a washing drum central shaft 212 formed on both ends, and the washing drum central shaft 212 formed on the rear surface is coupled to the washing drum drive gear 234 of the multi-stage motor 232 to transmit the rotational driving force, and the front surface is formed with a drum water inlet 214 that supplies washing water to the inside of the washing drum 210, and a drum water outlet 215 through which the washing water is discharged together with foreign matter after washing is completed.

The drum hose 640, which is composed of a water inlet hose 641 connected to the drum water inlet 214 and a water outlet hose 642 connected to the drum water outlet 215, is formed to be expandable and contractible, and can be maintained in a connected state even when the cleaning drum 210 moves up and down or rotates.

A drum water flow pipe 213 is formed at the top of the washing drum 210, which is connected to the drum water inlet 214, and washing water is discharged into the inside of the washing drum 210 through multiple separate water flow ports 213a formed in the drum water flow pipe 213.

Inside the washing drum 210, a blade 220 for washing the rice ingredients is provided. The blade 220 is composed of a washing blade 221 with a spacer rod formed thereon to sweep and remove foreign matter from the rice ingredients, a plate-shaped squeeze blade 222 formed to sweep the washed rice ingredients, and a blade rotation shaft 223 to which the washing blade 221 and the squeeze blade 222 are fixed.

The blade rotation shaft 223 is formed to protrude from the front or rear surface of the cleaning drum 210 and is disposed inside the cleaning drum central shaft 212. The blade rotation shaft 223 is formed to be hollow inside, and the cleaning water may move inside the hollow interior and be discharged to the outside through the separated water outlet 213a.

The blade rotating shaft 223 and the squeeze blade 222 are further provided with a separated water outlet 213a. The washing water flowing inside the hollow blade rotating shaft 223 is discharged from the separated water outlet 213a, and when the washed rice ingredients are supplied to the cooker 300, the remaining rice ingredients remaining inside the washing drum 210 and on the blade 220 can be washed away.

The cooking ingredients are supplied to the cleaning drum 210 from the grain supply device 100 through the inlet slit 211, and cleaning water is supplied from the drum water pipe 213 or the separate water outlet 213a formed on the blade 220. The cooking ingredients and cleaning water are contained in the cleaning drum 210, and the cleaning blade 221 rotates forward and backward repeatedly to remove foreign matter attached to the cooking ingredients.

After the washing is completed, the washing drum 210 is rotated to position the entrance slit 211 downward in order to supply the cooking ingredients and washing water to the cooker 300. At this time, the squeeze blade 222 is not positioned perpendicular to the entrance slit 211 when the washing drum 210 rotates, but enters the inside of the entrance slit 211 in order to discharge the cooking ingredients only from the top of the cooker 300 through the entrance slit 211, thereby preventing the cooking ingredients from spilling. At this time, a vibration motor (not shown) is further provided and vibrates the washing drum 210 and the blade 220 to drop the cooking ingredients remaining inside the washing drum 210 and supply all of them to the cooker 300.

As shown in FIG. 6, a filter mesh 216 is disposed on one side of the washing drum 210 at a predetermined distance from the drum outlet 215. The filter mesh 216 is formed with a cross-sectional area larger than the cross-sectional area of the drum outlet 215, and can pass a much larger flow rate at one time than the flow rate that passes directly through a filter of the narrow size of the drum outlet 215.

The filter mesh 216 allows only the foreign matter removed from the ingredients to be discharged together with the washing water, and also prevents the ingredients from escaping through the drum water outlet 215.

When a filter is placed on the cross section of the drum water outlet 215, the limited cross-sectional area of the drum water outlet 215 causes the filtration of foreign matter and the permeation flow rate of the washing water to be extremely slow. Furthermore, if foreign matter attached to the filter accumulates, the permeable area of the filter decreases, significantly reducing the drainage efficiency and increasing the time it takes to complete cooking.

As a result, the cleaning water that has completed cleaning in the cleaning drum 210 and contains foreign matter remains in the cleaning drum 210 for a long time, causing the foreign matter in the cleaning water to be redeposited on the rice cooking ingredients, resulting in the need to increase the number of cleanings, and thus reducing the cleaning efficiency.

Therefore, in the present invention, the area of the filter mesh 216 is made larger than the cross-sectional area of the drum water outlet 215, thereby increasing the flow rate passing through the filter mesh 216 and enabling faster drainage.

Furthermore, in the present invention, the filter mesh 216 is disposed at a predetermined distance from the drum water outlet 215, which is a filter chamber 217. The filter chamber 217 is a space through which the wash water that has passed through the filter mesh 216 passes before entering the drum water outlet 215, and only the wash water from which foreign matter has been removed by the filter mesh 216 exists in the filter chamber 217. A large flow rate can pass through the filter mesh 216, which has a cross-sectional area larger than that of the drum water outlet 215. After passing through the filter chamber 217, the wash water from which foreign matter has been removed by the filter mesh 216 can be quickly discharged from the drum water outlet 215, which is not equipped with a filter.

By allowing the cleaning water from which foreign matter has been removed to remain in the filter chamber 217 for a certain period of time, a water depth greater than the diameter of the drum water outlet 215 is formed, thereby increasing the flow rate of the cleaning water moving through the drum water outlet 215 and improving the drainage speed.

This shortens the time that the washing water containing foreign matter coexists with the rice cooking ingredients, minimizing redeposition to the rice cooking ingredients, and reduces the amount of washing water and the number of washings required, thereby increasing washing efficiency.

Figure 7 shows a multi-stage motor in an unmanned rice cooking device according to the present invention.

As shown in FIG. 7, the cleaning drum central shaft 212 and the blade rotation shaft 223 are formed coaxially and rotate coaxially, and the rotational force is transmitted by a multi-stage motor 232 located at the rear of the cleaning drum 210. In the multi-stage motor 232, a blade driving gear 233 is inserted into the hollow interior of a cleaning drum driving gear 234, and multiple motors M are provided to rotate both gears.

The cleaning drum drive shaft 234a extends from the cleaning drum drive gear 234, and the cleaning drum drive shaft 234a is connected to the cleaning drum central shaft 212 by a mechanical structure such as a protrusion and recess.

The blade driving shaft 233a extends from the blade driving gear 233 and is inserted into the hollow interior of the cleaning drum driving shaft 234a. The blade driving shaft 233a is connected to the blade rotation shaft 223 by a mechanical structure such as a protrusion and recess.

The rotational force generated by the multi-stage motor 232 is transmitted between the cleaning drum 210 and the blade 220 through a mechanical connection structure such as a protrusion and recess. This connection allows the cleaning drum 210 to move freely in the length direction while still transmitting the rotational force when engaged.

Therefore, when the cleaning drum 210 is pulled out to the front, it can be easily pulled out without having to release the complicated structure, and since it is not equipped with any electrical devices, it can be easily cleaned with water.

The washing drum 210 is further provided with a drum cage 230 that can be raised and lowered. The drum cage 230 has a multi-stage motor 232 arranged on the rear surface for rotating the washing drum 210 and the blade 220, lifting wings 235 that are inserted into the wing insertion opening 512 of the lifting body 500 on both sides, and a support base 231 for stable support on the inside. In the present invention, the support base 231 may be replaced with a member that has the function of supporting rollers, bearings, etc., and the support base 231 is a comprehensive term that includes such configurations.

In an embodiment of the present invention, the outer periphery of the cleaning drum 210 is supported on the support base 231 of the drum cage 230. When the drum cage 230 is raised and lowered by the lifting body 500, the cleaning drum 210 also rises and falls along with the drum cage 230.

At the initial height before the drum cage 230 is raised or lowered, a gap is formed between the cleaning drum 210 and the lower end of the supply guide 410, and a gap is formed between the cleaning drum 210 and the upper end of the sealing adapter 414. This height is defined as the first height.

At the first height of the drum cage 230, the washing drum 210 washes the rice cooking ingredients, and a gap exists between the lower end of the supply guide 410 and the upper end of the sealing adapter 414 to allow the washing drum 210 to rotate smoothly forward and backward without contact or friction.

Figures 8 to 10 are cross-sectional views showing the operation of the washer during the rice cooking process.

After the ingredients are washed in the washing drum 210, the washing drum 210 is rotated as shown in FIG. 8 to position the entrance slit 211 downward, and the ingredients are discharged into the inner pot 310. The washing drum 210 then rotates at a certain angle as shown in FIG. 9, and is positioned so that the sealed outer edge can come into contact with the upper end of the sealed adapter 414. In the cooker 300, the inner pot 310 is heated and rice cooking begins, and the drum cage 230 is lowered by the lifting body 500, and the washing drum 210 comes into close contact with the upper end of the sealed adapter 414, eliminating any gaps. This height is defined as the second height, and the outer edge of the washing drum 210 that comes into close contact with the upper end of the sealed adapter 414 is defined as the first outer edge 218.

The cleaning drum 210 fits tightly against the upper end of the sealed adapter 414, sealing the upper end of the sealed adapter 414. This allows the cleaning drum 210 to act as a lid for the inner pot 310, increasing the pressure inside the inner pot 310 where rice is being cooked.

The washing drum 210 serves as a lid for the inner pot 310, simplifying the structure, while at the same time heating the washing drum 210 with the high cooking heat from below to dry out and sterilize the remaining moisture inside, improving hygiene.

After the rice cooking is completed, the drum cage 230 is raised by the lifting body 500 as shown in FIG. 10, and the cleaning drum 210 comes into close contact with the lower end of the supply guide 410, eliminating the gap between the cleaning drum 210 and the lower end of the supply guide 410. This height is defined as the third height, and the outer periphery of the cleaning drum 210 that comes into close contact with the lower end of the supply guide 410 is defined as the second outer periphery 219.

The grain feeder 100 is sealed to prevent outside air from entering. In addition, the vacuum pump 413 is driven to suck air from inside the grain feeder 100 through the vacuum suction port 412, maintaining the inside at a vacuum pressure.

Therefore, the cooking ingredients stored in the grain supplying device 100 are less likely to deteriorate and can be prevented from being infested with pests such as rice bugs. By maintaining the highest quality of the cooking ingredients, more delicious rice can be made.

In addition, the first outer periphery 218 of the cleaning drum 210, which closes the upper end of the sealing adapter 414, and the second outer periphery 219 of the cleaning drum 210, which closes the lower end of the supply guide 410, are each composed of different surfaces. The first outer periphery 218, which seals the inner pot 310, is inevitably prone to generating a large amount of moisture, and if this moisture is transferred to the grain supply device 100, the ingredients for cooking are likely to deteriorate. Therefore, by dividing the outer periphery that seals the sealing adapter 414 and the supply guide 410 into the first outer periphery 218 and the second outer periphery 219, respectively, foreign objects that may be generated in the grain supply device 100 and the cooking device 300 are prevented from entering, improving hygiene.

In another embodiment of the present invention, the cleaner 200 may further include a rotary screen 236 in the drum cage 230 that is in close contact with the sealing adapter 414 and the supply guide 410, as shown in Figures 11 and 12.

The rotating screen 236 is arranged to rotate in the circumferential direction outside the cleaning drum 210. The rotating screen 236 can change its position while rotating in the circumferential direction of the cleaning drum 210.

The rotating screen 236 has a closed sealed surface 238 and an open open surface 237 formed in the length direction on the outer periphery. A long hole 239a through which the cleaning drum central shaft 212 passes is formed on the front surface, and a hose through hole 239 through which the drum hose 640 passes is formed with an area larger than that of the long hole 239a. The long hole 239a and the hose through hole 239 prevent the cleaning drum central shaft 212 and the drum hose 640 from being interfered with by the rotating screen 236 even when the rotating screen 236 moves up and down and rotates.

Alternatively, the front of the rotating screen 236 is open, and the cleaning drum central shaft 212 and the hose through hole 239 do not catch on any structure when the rotating screen 236 rotates, so no interference occurs.

The support base 231 of the drum cage 230 supports the outer edge of the rotating screen 236, and the support base motor 231a rotates the support base 231, causing the rotating screen 236 to rotate.

The rotating screen 236 rises and falls as the drum cage 230 rises and falls by the lifting body 500. When the drum cage 230 is positioned at the first height, the rotating screen 236 does not come into contact with the sealing adapter 414 and the supply guide 410.

When the drum cage 230 is lowered by the lifting body 500 to the second height, the sealing surface 238 of the rotating screen 236 comes into close contact with the upper end of the sealing adapter 414, sealing the inner pot 310 and increasing the pressure during the rice cooking process.

When the drum cage 230 is raised by the lifting body 500 to the third height, the sealing surface 238 of the rotary screen 236 comes into close contact with the lower end of the supply guide 410, sealing the grain supply device 100. At this time, while the rotary screen 236 moves up and down, the washing drum 210 does not move along the drum cage 230 and is fixed at the first height.

The operating sequence of the cleaner 200 in an embodiment equipped with a rotating screen 236 will now be described with reference to FIG. 13.

In the initial state, as shown in FIG. 13(a), the inlet slit 211 faces upward to receive the rice cooking ingredients from the grain supplier 100, and the open surface 237 of the rotary screen 236 also faces upward, and the drum cage 230 is not raised or lowered and is located at the initial first height. In this position, the rotary screen 236 forms a gap between the upper end of the sealing adapter 414 and the lower end of the supply guide 410. Also, a gap is formed between the inner surface of the rotary screen 236 and the washing drum 210, so that the rotation of the washing drum 210 is not interfered with.

At this position, the rice cooking ingredients are supplied from the grain supply device 100 to the cleaning drum 210 and are cleaned inside.

After the cleaning is completed, the entrance slit 211 of the cleaning drum 210 and the open surface 237 of the rotary screen 236 rotate so that they face downward. FIG. 13(b) shows the entrance slit 211 positioned horizontally while rotating downward. FIG. 13(b) shows the open surface 237 positioned horizontally while the rotary screen 236 is also rotating, but when the entrance slit 211 of the cleaning drum 210 is positioned horizontally while rotating, the rotary screen 236 does not rotate and the open surface 237 may be positioned vertically. The drum hose 640 connected to the front surface while the cleaning drum 210 rotates is formed to be expandable, so it maintains the connected state while expanding and contracting due to the rotation of the cleaning drum 210. The drum hose 640 moves along the line of the hose through hole 239.

As shown in FIG. 13(c), the inlet slit 211 and the open surface 237 are located downward, and the washed rice cooking ingredients inside are allowed to flow and discharged into the inner pot 310.

After the discharge is completed, the cleaning drum 210 rotates as shown in FIG. 13(b) so that the inlet slit 211 is positioned horizontally and the open surface 237 of the rotary screen 236 is also placed in a horizontal position. At this time, the sealed surface 238 is positioned so that it faces downward.

As shown in FIG. 13(d), the drum cage 230 is lowered by the lifting body 500 to the second height. The rotary screen 236 is also lowered, and the sealing surface 238 comes into contact with the upper end of the sealing adapter 414, sealing the inner pot 310. The outer periphery of the rotary screen 236 that comes into contact with the upper end of the sealing adapter 414 is defined as the third outer periphery 238a. The sealed inner pot 310 is heated and pressurized inside. At this time, the washing drum 210 is fixed at the first height and does not rise or fall, and the upper part of the washing drum 210 may come into contact with the inner surface of the rotary screen 236.

After the rice cooking is completed, the drum cage 230 rises to the first height again as shown in FIG. 13(b). In order to safely store the rice cooking ingredients stored in the storage drum 110 during processes other than washing and cooking, the drum cage 230 rises to the third height as shown in FIG. 13(e) by the lifting body 500 so that it is sealed. At this time, the entrance slit 211 and the open surface 237 of the rotating screen 236 are placed horizontally, and the sealed surface 238 of the rotating screen 236 is positioned facing upward. The washing drum 210 is fixed at the first height and does not rise or fall, and the lower part of the washing drum 210 may come into contact with the inner surface of the rotating screen 236.

The lower end of the supply guide 410 and the sealing surface 238 of the rotary screen 236 come into close contact with each other to seal the storage drum 110 and block out outside air. At this time, the sealing surface 238 of the rotary screen 236 that comes into close contact with the lower end of the supply guide 410 is defined as the fourth outer periphery 238b.

Then, the vacuum pump 413 is operated to suck air from inside the grain feeder 100 through the vacuum suction port 412, maintaining the inside at a vacuum pressure. The internal vacuum pressure prevents pests such as rice bugs from inhabiting the grain and minimizes deterioration of the grain.

When the drum cage 230 is positioned at the first height, a gap is formed between the cleaning drum 210 and the rotating screen 236, which helps the cleaning drum 210 rotate smoothly, and the open surfaces 237 of the rotating screen 236 are positioned at the top and bottom, allowing the rice ingredients to be supplied and discharged.

When the drum cage 230 is positioned at the second height, the sealing surface 238 of the rotary screen 236 is in close contact with the upper end of the sealing adapter 414, and the top of the cleaning drum 210 can contact the inner surface of the rotary screen 236. The inner pot 310 is sealed and pressurized during the cooking process.

When the drum cage 230 is positioned at the third height, the sealing surface 238 of the rotary screen 236 is in close contact with the lower end of the feed guide 410, and the lower part of the cleaning drum 210 can come into contact with the inner surface of the rotary screen 236. The grain feeder 100 is sealed off and no outside air can enter, allowing safe storage of the cooking ingredients.

The drum cage 230 can be positioned at multiple heights to allow for more effective rice cooking, and the outer edge of the rotating screen 236 that is in close contact with the sealing adapter 414 or the supply guide 410 can be divided into a third outer edge 238a and a fourth outer edge 238b to improve hygiene.

The cooker 300, which receives the rice cooking ingredients washed by the washer 200 and heats and cooks them, is located below the washer 200 and is composed of an inner pot 310 that receives the rice cooking ingredients from the washing drum 210 and stores the ingredients, a heater 331 that applies heat to cook rice at the bottom of the inner pot 310, and a cooker cage 330 that is a frame that supports the inner pot 310 and is equipped with the heater 331.

Figure 14 shows an inner pot in an unmanned rice cooking device of the present invention, in which the cooking vessel is formed in a circular shape.

In the present invention, the inner pot 310 may be formed in a circular shape as shown in FIG. 14. The circular inner pot 310 has a handle 311 on one side and a protrusion 312a on the upper edge 312.

The cooker cage 330, which houses the circular inner pot 310, is equipped with a heater 331 whose front is open so that the inner pot 310 can be inserted and removed, and the center of the heater 331 is equipped with an inner pot lifter 335 that is inclined upward toward the rear. A protrusion groove 333 is formed at the top into which the protrusion 312a of the inner pot 310 is inserted and coupled, and a locking lever 334 that rotates the protrusion groove 333 is formed at the front.

When the inner pot 310 is inserted into the cooker cage 330, the inner pot lifting body 335 lifts the inner pot 310, and the protrusion 312a of the edge 312 engages with the protrusion groove 333. The inner pot 310 and the cooker cage 330 can be connected by gripping the handle 311 of the inner pot 310 and rotating it, or by moving the locking lever 334 to engage the protrusion groove 333 with the protrusion 312a, and the edge 312 of the inner pot 310 is in close contact with the upper end of the cooker cage 330.

Alternatively, in the present invention, the inner pot 310 may be formed in a rectangular shape as shown in Figures 15 and 16. The rectangular inner pot 310 has handles 311 on the front and rear surfaces.

The cooker cage 330, in which the rectangular inner pot 310 is housed, is provided with a heater 331 whose front is open so that the inner pot 310 can be inserted and removed, and a lift rail 338 that guides the insertion and removal of the inner pot 310 and is inclined upward toward the rear is provided on the upper part of the heater 331. Lift cams 337 that lift the lift rail 338 are provided on both sides, and a contact lever 336 that presses the lift cam 337 to rotate it upward is provided on the front.

When the rectangular inner pot 310 is pushed into the cooker cage 330 along the lift rail 338, the edge 312 of the inner pot 310 comes into contact with the top of the cooker cage 330 as shown in FIG. 16(a). At this point, the contact lever 336 is pressed downward to rotate the lift cam 337 upward, and the lift rail 338 rises due to the lift cam 337, so that the entire edge 312 of the inner pot 310 comes into contact with the top of the cooker cage 330 as shown in FIG. 16(b).

Furthermore, in the present invention, the cooking device 300 is designed to be raised and lowered. As shown in FIG. 17, the inner pot 310 has handles 311 on the front and rear surfaces.

The inner pot drawer 320 surrounding the inner pot 310 has a door 322 on the front side, which can be grasped by hand to insert and pull out the inner pot 310. Both side walls have protruding surfaces 323 that are inserted into the sliding grooves 332 of the cooker cage 330, and a handle groove 321 is formed on the top to seat the inner pot 310.

A heater 331 is disposed at the bottom of the cooker cage 330, the front of which is open and into which the inner pot 310 can be inserted and removed. The gap formed by separating the heater 331 from both side walls is formed as a sliding groove 332 into which the protruding surface 323 of the inner pot puller 320 is inserted and removed. Lifting wings 235 are extended from both sides and inserted into the wing insertion openings 512 of the lifting body 500 to lift and lower.

After the handle 311 of the inner pot 310 is seated in the handle groove 321 of the inner pot drawer 320, the protruding surface 323 is inserted and pushed into the sliding groove 332 of the cooker cage 330. The bottom of the inner pot 310 is placed on the heater 331.

The washed ingredients for cooking are supplied from the washer 200 to the inner pot 310, where they are stored and cooked. The lifting wings 235 are inserted into the wing insertion openings 512 of the lifting body 500, and the cooker cage 330 is raised by the lifting body 500. The edge 312 of the inner pot 310 is brought into close contact with the lower end of the sealing adapter 414, and the drum cage 230 is lowered to the second height and brought into close contact with the upper end of the sealing adapter 414, sealing the inner pot 310.

The inner pot 310 rises and falls together with the heater 331 while remaining in close contact with each other, so no separation distance is created, improving thermal conductivity. This improves rice cooking efficiency and shortens the cooking time.

Figure 18 is a perspective view showing the lifting body in the unmanned rice cooking device of the present invention.

The lifting body 500 for lifting the drum cage 230 or the cooker cage 330 includes a lifting frame 511 formed along the main body frame 400 and lifting, a wing insertion hole 512 connected to the lifting frame 511 and into which the lifting wing 235 is inserted, and a lifting machine for transmitting power to the lifting frame 511. The lifting machine may be driven by any one of a linear motor 517, a cylinder 516, or a screw 518.

As shown in FIG. 18(a), the lifting body 500, which is driven by a cylinder 516 as an elevator, is provided with a movable slide 514 connected to the lifting frame 511, and a fixed slide 515 connected to the main frame 400.

When the cylinder 516 is extended to push the movable slide 514, the movable slide 514 slides along the inclined surface of the fixed slide 515 and moves upward or downward. The lifting frame 511 to which the movable slide 514 is connected also moves vertically, and the wing insertion opening 512 also moves. Since the lifting wings 235 formed on the drum cage 230 or the cooker cage 330 are inserted into the wing insertion opening 512, the drum cage 230 or the cooker cage 330 also moves while lifting and descending vertically.

The lifting elastic body 513 is an elastic body that connects the lifting frame 511 and the main frame 400, and provides elastic force so that the inclined surfaces of the movable slide 514 and the fixed slide 515 are always kept in contact with each other. Even when power is removed from the elevator, the lifting elastic body 513 allows the inclined surfaces of the movable slide 514 and the fixed slide 515 to be kept in contact with each other.

As shown in FIG. 18(b), the lifting body 500 driven by a linear motor 517 as a lifting device is connected by the lifting device of the linear motor 517 connecting the lifting frame 511 and the main body frame 400, and the lifting frame 511 moves upward or downward by the operation of the linear motor 517. As the lifting frame 511 moves, the drum cage 230 or the cooker cage 330, in which the lifting wings 235 are inserted into the wing insertion opening 512, can move up and down.

As shown in FIG. 18(c), the lifting body 500 driven by the screw 518 as a lifting mechanism is connected by the lifting mechanism of the screw 518 connecting the lifting frame 511 and the main body frame 400, and when the screw 518 rotates, the lifting frame 511 moves upward or downward. As the lifting frame 511 moves, the drum cage 230 or the cooker cage 330, in which the lifting wings 235 are inserted into the wing insertion opening 512, can move up and down.

The lifting body 500 lifts and lowers the drum cage 230 or the cooker cage 330, so that the inner pot 310 and the storage drum 110 can be sealed.

Figures 19 and 20 show the pipeline of the unmanned rice cooking device of the present invention.

As shown in FIG. 19 and FIG. 20, the present invention further includes a pipeline 600 for supplying cleaning water to the cleaning drum 210. The pipeline 600 includes a water purification filter 610 that receives clean water from the outside and purifies the clean water, a first valve 620 that controls the movement of the cleaning water purified by the water purification filter 610 to the clean water tap 630 and the water inlet hose 641, a clean water tap 630 that discharges the cleaning water purified by the water purification filter 610, a drain tray 670 that stores the cleaning water discharged from the clean water tap 630, a drum hose 640 consisting of a water inlet hose 641 to which cleaning water is supplied and a water outlet hose 642 to which cleaning water is discharged, a drain pump 650 that controls the discharge of cleaning water from the cleaning drum 210, an outlet storage tank 680 that stores the cleaning water discharged through the outlet hose 642, and a second valve 660 that controls the movement of the discharged cleaning water to the outlet storage tank 680 or a drain.

First, clean water is supplied from the outside and flows to the water purification filter 610. A single or multiple water purification filters 610 may be provided. The cleaning water purified by the water purification filter 610 flows through the first valve 620 to the water purification tap 630 or flows to the water inlet hose 641 connected to the drum water inlet 214 of the cleaning drum 210.

The cleaning water transferred to the purified water tap 630 can be discharged for various purposes such as drinking, and the purified water (potable water) to be discarded is collected in the drainage tray 670 and then discharged to the outside.

The washing water transferred to the washing drum 210 is supplied to the washing drum 210 as the water required for washing the ingredients and cooking the rice, and when washing is completed, it is discharged through the water outlet hose 642 by the operation of the drain pump 650.

The washing water discharged from the washing drum 210 may be moved to the water discharge storage tank 680 or discharged to the outside under the control of the second valve 660. The water discharge storage tank 680 is a tank that receives the washing water after washing is completed and stores the washing water, and the polishing water stored therein may be discharged from the tank outlet 681 and used separately. Alternatively, it may be discharged to the outside through a separate line connected to the water discharge storage tank 680.

A wireless communication module (not shown) may be disposed on one side of the unmanned rice cooking device of the present invention. The wireless communication module (not shown) can communicate in conjunction with a user's smartphone and transmit rice cooking commands or washing commands from a smartphone application. The wireless communication module (not shown) transmits the received commands to a control module (not shown), and the control module (not shown) performs grain selection, rice cooking control, washing control, and rotation control of the washing drum 210.

The rice cooking process will be described below using one embodiment of the unmanned rice cooking device of the present invention. The cleaning device 200 equipped with the rotating screen 236 has been described above, so its description will be omitted.

The storage drum 110 is pulled out and the cooking ingredients are stored inside. When it is time to cook the rice, the opening and closing plate 113 is rotated to discharge the cooking ingredients stored in the cartridge 112 from the grain discharge port 114. The cooking ingredients pass through the supply slit 411 of the supply guide 410 and the inlet slit 211 of the cleaning drum 210 and are supplied to the inside of the cleaning drum 210.

At this time, the drum cage 230 is located at the first height. Washing water is supplied to the inside of the washing drum 210 from the drum water inlet 214, and the washing blade 221 rotates forward and backward to sweep and remove foreign matter from the rice cooking ingredients.

After cleaning is completed, the cleaning drum 210 rotates so that the inlet slit 211 faces downward, allowing the cooking ingredients and cleaning water to flow into the inner pot 310 of the cooker 300, and the squeeze blade 222 operates to sweep and supply any remaining cooking ingredients remaining in the cleaning drum 210.

The cleaning drum 210 rotates at a certain angle so that the first outer periphery 218 faces downward, and then is lowered to a second height by the lifting body 500, so that the first outer periphery 218 comes into close contact with the upper end of the sealed adapter 414. In addition, the cooking device cage 330 is raised by the lifting body 500, so that the edge 312 of the inner pot 310 comes into close contact with the lower end of the sealed adapter 414. The inner pot 310 is heated by the heater 331 in a sealed state, and pressure is increased inside.

When cooking is complete, the cooker cage 330 descends, releasing the tight contact between the edge 312 of the inner pot 310 and the bottom end of the sealing adapter 414, allowing the inner pot 310 to be pulled out by the inner pot pull-out 320, and the drum cage 230 rises to the first height together with the washing drum 210.

The drum cage 230 rises to a third height to store the rice ingredients stored in the storage drum 110 more safely during processes other than cooking and washing the rice ingredients. The second outer periphery 219 of the washing drum 210 is in close contact with the lower end of the supply guide 410 to shield the grain feeder 100, preventing outside air from entering. The vacuum pump 413 operates to maintain a vacuum pressure state inside the grain feeder 100, preventing the habitation of pests and minimizing deterioration of the rice ingredients.

100 Grain supply device 110 Storage drum 111 Partition wall 112 Cartridge 113 Opening and closing plate 114 Grain discharge port 115 Central shaft insertion port 116 Opening and closing drive gear 117 Sensor 120 Grain measuring device 121 Illumination lamp 122 Measurement recognition module 123 Rail 130 Drum tray 131 Tray central axis 132 Tray hinge 133 Support plate 200 Cleaning device 210 Cleaning drum 211 Inlet slit 212 Cleaning drum central axis 213 Drum water flow pipe 213a Separation water port 214 Drum water inlet 215 Drum water outlet 216 Filter net 217 Filter chamber 218 First outer periphery 219 Second outer periphery 220 Blade 221 Cleaning blade 222 Squeeze blade 223 Blade rotating shaft 230 Drum cage 231 Support 231a Support motor 232 Multi-stage motor 233 Blade drive gear 233a Blade drive shaft 234 Washing drum drive gear 234a Washing drum drive shaft M Motor 235 Lifting wing 236 Rotating screen 237 Open surface 238 Sealed surface 238a Third outer periphery 238b Fourth outer periphery 239 Hose through hole 239a Slot 300 Cooking device 310 Inner pot 311 Handle 312 Edge 312a Protrusion 320 Inner pot drawer 321 Handle groove 322 Door 323 Protruding surface 330 Cooking device cage 331 Heater 332 Sliding groove 333 Protrusion groove 334 Locking lever 335 Inner pot lifting body 336 Contact lever 337 Lifting cam 338 Lifting rail 400 Main body frame 410 Supply guide 411 Supply slit 412 Vacuum suction port 413 Vacuum pump 414 Sealing adapter 415 Steam exhaust port 500 Lifting body 511 Lifting frame 512 Blade insertion port 513 Lifting elastic body 514 Movable slide 515 Fixed slide 516 Cylinder 517 Linear motor 518 Screw 600 Pipeline 610 Water purification filter 620 First valve 630 Water purification tap 640 Drum hose 641 Water inlet hose 642 Water outlet hose 650 Drain pump 660 Second valve 670 Drain tray 680 Water outlet storage tank 681 Tank outlet

Claims (16)

A grain feeder (100) including a storage drum (110) for storing and storing cooking ingredients;
A cleaning device (200) installed under the grain supply device (100) for cleaning the rice ingredients;
a cooking device (300) installed under the cleaning device (200) to cook rice; and a main body frame (400) on which the grain supplying device (100), the cleaning device (200), and the cooking device (300) are arranged;
The cleaning device (200) includes a cleaning drum (210) in which a blade (220) for cleaning the rice ingredients discharged from the grain supply device (100) is disposed, and a drum cage (230) disposed outside the cleaning drum (210).
The cooker (300) includes an inner pot (310) that receives the washed rice ingredients from an inlet slit (211) of the washing drum (210), and a cooker cage (330) equipped with a heater (331) that heats the inner pot (310),
The main body frame (400) includes a supply guide (410) located between the grain supply device (100) and the cleaning device (200) and inclined to guide the rice cooking ingredients to the inlet slit (211), and a sealing adapter (414) disposed between the cleaning device (200) and the cooking device (300),
When the rice cooking ingredients are supplied to the washing drum (210) and when the rice cooking ingredients are discharged from the washing drum (210), the drum cage (230) is located at a first height,
When the drum cage (230) is located at the second height, the inner kettle (310) is sealed,
When the drum cage (230) is located at a third height, the storage drum (110) is sealed;
An unmanned rice cooking device, wherein the second height is lower than the first height, and the third height is higher than the first height. At the third height of the drum cage (230), the outer periphery of the washing drum (210) is in close contact with the lower end of the supply guide (410);
The unmanned rice cooking apparatus according to claim 1, wherein at the second height of the drum cage (230), the outer periphery of the washing drum (210) is in close contact with the upper end of the sealing adapter (414). The washing drum (210) is
A first outer periphery (218) is in intimate contact with the upper portion of the sealing adapter (414);
The second outer periphery (219) is in close contact with the lower end of the supply guide (410);
The unmanned rice cooking device according to claim 2, wherein the first outer periphery (218) and the second outer periphery (219) are located at different positions from each other. A rotary screen (236) that rotates in the circumferential direction is provided on the outside of the washing drum (210),
At the second height of the drum cage (230), a third outer periphery (238a) of the rotary screen (236) is in close contact with the upper end of the sealing adapter (414);
The unmanned rice cooking apparatus according to claim 1, wherein a fourth outer peripheral edge (238b) of the rotating screen (236) is in close contact with a lower end of the supply guide (410) at a third height of the drum cage (230). The rotary screen (236) has an open surface (237) that opens in the length direction and a closed surface (238), and a long hole (239a) through which the central axis of the washing drum (212) passes is formed on the front surface. A hose through hole (239) through which a drum hose (640) that supplies or discharges washing water to or from the washing drum (210) passes is formed with an area larger than that of the long hole (239a).
The unmanned rice cooking apparatus according to claim 4, wherein the rotating screen (236) rotates at a first height of the drum cage (230), and the open surface (237) of the rotating screen (236) is in the same direction as the inlet slit (211) during the inflow and discharge of the rice cooking ingredients of the cleaning drum (210). A vacuum suction port (412) through which air moves is formed on one side of the supply guide (410).
The unmanned rice cooking device according to claim 1, wherein air inside the supply guide (410) is sucked through the vacuum suction port (412) by operating a vacuum pump (413) at the third height of the drum cage (230). The washing drum (210) is provided at one side with a drum water outlet (215) through which the washing water used to wash the rice ingredients is discharged.
The unmanned rice cooking device of claim 1, wherein a filter mesh (216) for preventing the discharge of rice ingredients is attached to the inside of the drum water outlet (215), the filter mesh (216) is formed with an area larger than the cross-sectional area of the drum water outlet (215), and a filter chamber (217) is disposed with the filter mesh (216) and the drum water outlet (215) spaced apart. The unmanned rice cooking device according to claim 1, wherein a separate water outlet (213a) is formed inside or on the top of the blade (220) through which washing water flowing in from the outside is discharged, and the washing water is discharged from the separate water outlet (213a) into the inside of the washing drum (210). The inner pot (310) is provided with a handle (311) on one side and a plurality of protrusions (312a) on the upper end.
2. The unmanned rice cooking device according to claim 1, wherein the cooking cage (330) has a protrusion groove (333) formed on an upper surface thereof, the protrusion (312a) being coupled to the protrusion (312a), and the protrusion (312a) of the inner pot (310) and the protrusion groove (333) of the cooking cage (330) are coupled to each other. In the cooking device (300),
The inner pot (310) is provided with a handle (311),
The cooker cage (330) is provided with a contact lever (336) at the front, a lift rail (338) at the top end that is inclined upward toward the rear, and a lift cam (337) that rotates upward when the contact lever (336) is pressed.
2. The unmanned rice cooking device of claim 1, wherein when the inner pot (310) is inserted into the rising rail (338), the edge (312) comes into contact with the upper end of the cooker cage (330), and the rising cam (337) raises the rising rail (338) so that the edge (312) comes into close contact with the upper end of the cooker cage (330). 2. The unmanned rice cooking device according to claim 1, wherein the heater (331) and the inner pot (310) rise simultaneously when the drum cage (230) descends to the second height. In the cooking device (300),
The cooker cage (330) has sliding grooves (332) between the heater (331) and both side walls,
The unmanned rice cooking device according to claim 11, further comprising an inner pot drawer (320) having protruding surfaces (323) protruding from both sides inserted into the sliding grooves (332) to form a handle groove (321) in which the handle (311) of the inner pot (310) is seated. The drum cage (230) or the cooker cage (330) is provided with lifting wings (235) extending from the side,
A lifting frame 511 connected to the lifting wing (235) is disposed along the main frame (400);
The unmanned rice cooking device according to claim 1 or 11, further comprising an elevator that raises and lowers the lifting frame (511). The unmanned rice cooking device of claim 13, wherein the elevator is driven by one of a linear motor (517), a cylinder (516), or a screw (518). The main body frame (400) is provided with a pipeline (600),
The pipeline (600) comprises:
A water purification filter (610) that receives water from an external source and purifies the water;
a water purification tap (630) for receiving purified water from the water purification filter (610) and drawing the purified water to the outside; and an expandable drum hose (640) including a water inlet hose (641) for supplying the purified water from the water purification filter (610) to the washing drum (210) and a water outlet hose (642) for discharging washing water generated in the washing drum (210);
The unmanned rice cooking device according to claim 1, wherein the water inlet hose (641) and the water outlet hose (642) are connected in front of the cleaning drum (210). A wireless communication module is disposed on one side,
The unmanned rice cooking device according to claim 1 , further comprising a control module that receives a rice cooking command or a cleaning command from a smartphone application and executes grain selection, rice cooking control, cleaning control, or cleaning drum rotation control.

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