Electric cooker with ultrasonic rice washing function

Abstract

An electric cooker with an ultrasonic rice washing function comprises a shell, the shell is provided with an inner pot, a base used for bearing the inner pot and a controller, the inner pot is provided with an inner cavity with an opening in the upper end, and the bottom of the inner pot is provided with an inner pot first hole site and an inner pot second hole site; a first water inlet assembly communicated with the first hole site of the inner pot, a water drainage assembly communicated with the second hole site of the inner pot, a rice storage bin located on one side of the inner pot, a rice adding device with one end connected with the rice storage bin and the other end connected with the inner cavity and an ultrasonic transducer are arranged on the shell, and the ultrasonic transducer is located between the inner pot and the base and makes contact with the outer side of the inner pot. According to the electric cooker, rice adding, rice washing, water adding and water draining can be automatically carried out according to input information, the automatic cooking process is achieved, the automation degree of the electric cooker is higher, the labor amount of manual cooking is reduced, time and labor are saved, water or rice does not need to be put in advance, and the requirements of users can be further met.

Description

Technical Field

[0001] The utility model relates to the technical field of rice cookers, in particular to a rice cooker with an ultrasonic rice washing function. Background Art

[0002] Rice is one of the mainstays of daily diet, and many people take rice as the staple food for three meals a day. Therefore, the rice cooker has become an important kitchen appliance. Soaking rice for a certain period before cooking can make the cooked rice soft, glutinous and delicious. However, the soaking time of rice needs to be controlled. If the time is too long, the nutrients in the rice will be lost in the water, especially the water-soluble vitamin B in the rice will be lost greatly.

[0003] Generally, in the use process of a traditional rice cooker, first, the rice grains need to be manually soaked and washed, then the washed rice grains are mixed with a certain amount of water and added to the rice cooker, and finally, the rice grains are steamed for a certain time by using the heating and steaming function of the rice cooker and then can be eaten. To improve the convenience of use, rice cookers with a reservation function have emerged on the market. The user needs to plug in the rice cooker, wash the rice well, put it into the pot and add an appropriate amount of water. After the user sets the reservation time, the rice cooker can automatically cook at the appointed time.

[0004] However, although this function makes the cooking time controllable, the water in the pot cannot be automatically discharged. During reservation cooking, the rice is soaked in the pot for a long time, which will cause the starch on the surface of the rice to start to decompose. In hot weather, when the reservation cooking time exceeds 8 hours, bacteria are likely to breed, and the rice is prone to develop a strange smell during the long-term soaking process in a closed space. After eating, it will accumulate toxins in the body and affect one's own health. Due to the long soaking time, a lot of nutrients are also lost, and the cooked rice will lose its original texture, become less loose and overly soft, sticky, and its color, aroma and taste will all decline.

[0005] Therefore, it is necessary to develop a rice cooker with an ultrasonic rice washing function that does not require long-term soaking of rice, can soak and wash rice at the reserved time, and is convenient for users. Summary of the Utility Model

[0006] In view of the above technical problems that the existing rice cookers with a reservation function need to put rice and water in advance, and the long-term soaking of rice will affect the taste and health, the technical solution adopted by the utility model to solve its technical problems is:

[0007] An electric rice cooker with an ultrasonic rice washing function, comprising a housing, an inner pot provided on the housing, a base for supporting the inner pot, and a controller. The inner pot is provided with a cavity with an open upper end. The bottom of the inner pot is provided with a first hole position of the inner pot and a second hole position of the inner pot. The housing is provided with a first water inlet assembly communicated with the first hole position of the inner pot, a drainage assembly communicated with the second hole position of the inner pot, a rice storage bin located on one side of the inner pot, a rice adding device with one end connected to the rice storage bin and the other end connected to the cavity, and an ultrasonic transducer. The ultrasonic transducer is located between the inner pot and the base and is in contact with the outer side of the inner pot.

[0008] In order to improve the contact effect between the ultrasonic transducer and the inner pot, a plurality of ultrasonic transducers are provided, and the ultrasonic transducers are arranged at intervals on the side surface and the bottom of the inner pot.

[0009] In order to improve the effect of automatic rice adding of the rice adding device, the rice adding device includes a first rice conveying pipeline connected to the rice storage bin, a second rice conveying pipeline connected to the upper open end of the cavity, and a suction and exhaust pump located between the first rice conveying pipeline and the second rice conveying pipeline.

[0010] In order to improve the effect of automatic rice adding of the rice adding device, a valve body extending into the rice storage bin and a first rice conveying pipeline limiting part are provided on the first rice conveying pipeline. An opening for the valve body to pass through is provided on the first rice conveying pipeline limiting part. A plug in contact with the first rice conveying pipeline limiting part is provided at the end of the valve body. An elastic body is provided between the valve body and the first rice conveying pipeline.

[0011] In order to improve the effect of automatic rice adding of the rice adding device, a first limiting housing is further provided on the first rice conveying pipeline. The first limiting housing is provided with a protruding part. A limiting groove and an opening of the protruding part for the valve body to extend into are provided on the protruding part. The valve body is provided with a valve body opening communicated with the first rice conveying pipeline and a valve body limiting block located on the limiting groove. The elastic body is sleeved on the outside of the protruding part. One end of the elastic body abuts against the valve body limiting block and the other end abuts against the inner wall of the first limiting housing.

[0012] In order to realize the functions of automatic water inlet and automatic drainage, the first water inlet assembly includes a first pipeline extending into the first hole position of the inner pot, a water inlet pipeline, and a first electromagnetic valve located between the first pipeline and the water inlet pipeline. The drainage assembly includes a second pipeline extending into the second hole position of the inner pot, a water outlet pipeline, and a drainage valve mechanism located between the second pipeline and the water outlet pipeline. The first electromagnetic valve and the drainage valve mechanism are respectively electrically connected to the controller. Filter meshes are respectively provided at the first hole position of the inner pot and the second hole position of the inner pot.

[0013] In order to improve the drainage effect of the drainage component, the drainage valve mechanism includes a driving member connected to the controller, a valve body, a connecting rod connected to the driving member, and a closing member connected to the connecting rod and extending into the valve body. The valve body is provided with a first drainage valve body opening communicating with the second pipeline, a second drainage valve body opening communicating with the water outlet pipeline, a third drainage valve body opening for the connecting rod to extend into, and a receiving cavity for receiving the closing member. The driving member drives the closing member to move in the receiving cavity through the connecting rod.

[0014] In order to improve the drainage effect of the drainage component, the driving member includes a motor and a crank portion connected to the motor and rotating along the circumferential side. An eccentric rod is provided on the crank portion, and a mating groove connected to the eccentric rod is provided at one end of the connecting rod.

[0015] Further, a second water inlet component is further provided on the housing. The second water inlet component includes a second solenoid valve connected to the water inlet pipeline, a third pipeline located on the upper side of the inner cavity, and a pressurizing water pump located between the second solenoid valve and the third pipeline.

[0016] Further, a pressure component and an air inlet pipe are further provided on the housing. The pressure component respectively includes a third solenoid valve connected to the air inlet pipe, a fourth pipeline located on the upper side of the inner cavity, and a pressurizing pump located between the third solenoid valve and the fourth pipeline.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 1. The present utility model can avoid the disadvantages of traditional rice cookers with a reservation function that need to mix water and rice first and then wait for cooking, which affects the taste of food and is prone to food spoilage. The rice adding device provided in the present utility model can automatically add rice, the ultrasonic transducer can complete the rice washing function, the first water inlet component can complete the water adding function, and the drainage component can complete the drainage function. The automatic cooking process is realized through the cooperation of multiple components, making the automation degree of the rice cooker higher, reducing the labor intensity of manual cooking, saving time and effort, not requiring water or rice to be placed in advance, and being able to further meet the needs of users.

[0019] 2. The present utility model realizes the functions of automatic rice adding and rice washing through the contact between the rice adding device, the ultrasonic transducer and the inner pot. At the same time, by using the first automatic component and the drainage component, the functions of automatic water inlet and automatic drainage of the rice cooker at the reserved time are realized, and the effects of automatic rice washing and discharging of the rice washing water can be achieved. Through the whole process automation of rice washing and cooking, users can further cook rice at the reserved time without pre-adding rice in the inner pot, ensuring the hygiene and taste of the rice. Description of the Drawings

[0020] Figure 1 Internal schematic diagram of a rice cooker with ultrasonic rice washing function of the present utility model.

[0021] Figure 2 Top view of a rice cooker with ultrasonic rice washing function of the present utility model.

[0022] Figure 3 For Figure 2 A - A cross - sectional view.

[0023] Figure 4 For Figure 3 Enlarged view of part A.

[0024] Figure 5 Schematic exploded view of a rice cooker with ultrasonic rice washing function of the present utility model.

[0025] Figure 6 Partial exploded view of the rice - adding device of the present utility model.

[0026] Figure 7 For Figure 2 B - B cross - sectional view.

[0027] Figure 8 For Figure 7 Enlarged view of part B.

[0028] Figure 9 For Figure 2 B - B cross - sectional view when the rice cooker is draining water.

[0029] Figure 10 For Figure 9 Enlarged view of part C.

[0030] Figure 11 Schematic diagram of the drain valve mechanism of an automatic drainage and water inlet rice cooker of the present utility model. Detailed implementation mode

[0031] The following will make a detailed description of the implementation mode of the present utility model with reference to the accompanying drawings.

[0032] As Figures 1 to 11An electric rice cooker with an ultrasonic rice washing function is shown, including a housing 1. An inner pot 2, a base 6 for supporting the inner pot 2, and a controller are provided on the housing 1. The inner pot 2 is provided with a cavity 3 with an open upper end. A first inner pot hole 21 and a second inner pot hole 22 are provided at the bottom of the inner pot 2. A first water inlet assembly 30 communicating with the first inner pot hole 21, a drainage assembly 4 communicating with the second inner pot hole 22, a rice storage bin 10 located on one side of the inner pot 2, a rice adding device 9 with one end connected to the rice storage bin 10 and the other end connected to the cavity 3, and an ultrasonic transducer 11 are provided on the housing 1. The ultrasonic transducer 11 is located between the inner pot 2 and the base 6 and is in contact with the outer side of the inner pot 2.

[0033] The utility model can avoid the disadvantages that the traditional electric rice cooker with a reservation function needs to mix water and rice first and then wait for cooking, which affects the taste of food and is likely to cause food spoilage. The rice adding device provided in the utility model can automatically add rice, the ultrasonic transducer provided can complete the rice washing function, the first water inlet assembly can complete the water adding function, and the drainage assembly can complete the drainage function. The automatic cooking process is realized through the cooperation of multiple components, making the automation degree of the electric rice cooker higher, reducing the labor intensity of manual rice cooking, saving time and effort, not requiring pre-placing water or rice in advance, and being able to further meet the needs of users.

[0034] The utility model realizes the functions of automatic rice adding and rice washing through the contact between the rice adding device, the ultrasonic transducer and the inner pot. At the same time, by using the first automatic assembly and the drainage assembly, the functions of automatic water inlet and automatic water drainage of the electric rice cooker at the reserved time are realized, and the effects of automatically cleaning rice and discharging the rice washing water can be achieved. Through the whole process automation of rice washing and cooking, users can further cook rice at the reserved time without pre-adding rice in the inner pot, ensuring the hygiene and taste of the rice.

[0035] Further, as a preferred embodiment rather than a limitation of the utility model, an ultrasonic sound source connected to the ultrasonic transducer is included on the controller. By using the ultrasonic sound source to generate a certain frequency and voltage signal, the ultrasonic transducer and the inner wall of the inner pot are driven to vibrate at a high frequency. Using water as a medium, the vibration is transmitted to the water, and by changing the pressure balance in the water, a low-pressure area is formed to generate many tiny bubbles. The bubbles propagate along the vibration direction, some bubbles directly contact the surface of the rice, and some bubbles enter the gaps between the rice grains. With the shock waves generated by the rupture of countless bubbles, relying on the oscillation generated by the ultrasonic wave in the liquid, the dirt on the surface of the rice is peeled off to achieve the purpose of cleaning. Using ultrasonic cleaning has the advantage of no dead angle in cleaning.

[0036] Such as Figure 3An electric rice cooker with an ultrasonic rice washing function as shown. A plurality of ultrasonic transducers 11 are provided, and the ultrasonic transducers 11 are arranged at intervals on the side surface and the bottom of the inner pot 2. Further, as a preferred embodiment of the present invention rather than a limitation, rice has the property of absorbing water. In the process of adding water to cook rice in daily life, water as a medium generally only needs to submerge the upper end surface of the rice, and the amount of water added is slightly higher than the rice by about 1.5 cm - 2 cm. The ultrasonic transducer is arranged on the side surface of the inner pot and close to the bottom, and can more fully transmit shock waves to the medium on the side surface of the inner pot. The ultrasonic transducer is arranged at the bottom of the inner pot, and can more fully transmit shock waves upward from the bottom of the inner pot.

[0037] As Figures 3 to 6 An electric rice cooker with an ultrasonic rice washing function as shown. The rice adding device 9 includes a first rice conveying pipe 91 connected to the rice storage bin 10, a second rice conveying pipe 92 connected to the upper end opening of the inner cavity 3, and an air extraction pump 93 located between the first rice conveying pipe 91 and the second rice conveying pipe 92. Further, as a preferred embodiment of the present invention rather than a limitation, the controller includes a weighing sensor arranged on the first rice conveying pipe or the second rice conveying pipe. After the user sets the value, the controller starts the air extraction pump according to the required weight of the rice. When the air extraction pump starts to suck the rice in the rice storage bin, the weighing sensor can measure the weight of the rice passing through. When the weight of the rice reaches the set value, the air extraction pump stops running.

[0038] Optionally, a weighing sensor is arranged in the second rice conveying pipe near the upper side of the inner cavity. When the rice passing through the second rice conveying pipe reaches the set value, the air extraction pump stops running.

[0039] As Figures 3 to 6 An electric rice cooker with an ultrasonic rice washing function as shown. A valve body 911 extending into the rice storage bin 10 and a first rice conveying pipe limiting part 912 are arranged on the first rice conveying pipe 91. An opening for the valve body 911 to pass through is arranged on the first rice conveying pipe limiting part 912. A plug 9111 in contact with the first rice conveying pipe limiting part 912 is arranged at the end of the valve body 911. An elastic body 913 is arranged between the valve body 911 and the first rice conveying pipe 91. Further, as a preferred embodiment of the present invention rather than a limitation, when the air extraction pump sucks, the valve body compresses the elastic body under the suction pressure, and the plug moves in the suction direction and separates from the first rice conveying pipe limiting part. At this time, the first rice conveying pipe is opened, and the rice enters the first rice conveying pipe from the opening of the first rice conveying pipe limiting part and is sucked to the second rice conveying pipe. When the air extraction pump stops running, the elastic body pushes the valve body to reset so that the plug is in contact with the first rice conveying pipe limiting part, and the plug blocks the opening of the first rice conveying pipe limiting part.

[0040] As Figures 3 to 6 shown, a rice cooker with an ultrasonic rice washing function, a first limiting housing 914 is further provided on the first rice conveying pipe 91. The first limiting housing 914 is provided with a protruding portion 9141. The protruding portion 9141 is provided with a limiting groove 91411 and a protruding portion opening 914111 for the valve body 911 to extend into. The valve body 911 is provided with a valve body opening 9112 communicating with the first rice conveying pipe 91 and a valve body limiting block 9113 located on the limiting groove 91411. The elastic body 913 is sleeved outside the protruding portion 9141. One end of the elastic body 913 abuts against the valve body limiting block 9113 and the other end abuts against the inner wall of the first limiting housing 914. Further, the valve body limiting block can move on the limiting groove so that the plug can move in a straight line, and the limiting groove can prevent the valve body from shifting.

[0041] When the suction pump sucks, under the suction pressure, the valve body compresses the elastic body through the valve body limiting block, and the plug moves in the suction direction and separates from the first rice conveying pipe limiting portion. At this time, the first rice conveying pipe is opened, and the rice first enters the valve body opening from the rice storage bin and enters the first rice conveying pipe through the opening of the first rice conveying pipe limiting portion and is sucked to the second rice conveying pipe. When the suction pump stops operating, the elastic body pushes the valve body limiting block to reset so that the plug contacts the first rice conveying pipe limiting portion, and the plug seals the opening of the first rice conveying pipe limiting portion. The protruding portion can prevent the elastic body from coming off.

[0042] As Figures 7 to 11 shown, a rice cooker with an ultrasonic rice washing function, the first water inlet assembly 30 includes a first pipe 31 extending into the first hole position 21 of the inner pot, a water inlet pipe 32, and a first electromagnetic valve 33 located between the first pipe 31 and the water inlet pipe 32. The drainage assembly 4 includes a second pipe 41 extending into the second hole position 22 of the inner pot, a water outlet pipe 42, and a drainage valve mechanism 43 located between the second pipe 41 and the water outlet pipe 42. The first electromagnetic valve 33 and the drainage valve mechanism 43 are respectively electrically connected to the controller. The first hole position 21 and the second hole position 22 of the inner pot are respectively provided with a filter screen 23.

[0043] The utility model realizes the automatic water inlet and automatic drainage functions of the rice cooker at the appointed time through the first automatic assembly and the drainage assembly, can achieve the effects of automatically cleaning the rice and discharging the rice washing water, and can filter out impurities during the cleaning process by setting the filter screen, avoiding the rice from entering the first automatic assembly and the drainage assembly and causing blockage.

[0044] When the rice cooker activates the water inlet function, the controller starts the first solenoid valve and closes the drain valve mechanism. Water from the water source enters the first pipe through the first solenoid valve from the water inlet pipe. The water source enters the inner cavity from the first hole position of the inner pot until the added water reaches the preset value, then the controller closes the first solenoid valve. When the rice cooker activates the drainage function, the controller starts the drain valve mechanism and closes the first solenoid valve. The water source enters the outlet pipe through the drain valve mechanism from the second pipe. The water source is discharged from the second hole position of the inner pot to the outside of the inner cavity until the water source is drained, then the controller closes the drain valve mechanism.

[0045] Optionally, the first pipe and the second pipe are made of heat-resistant materials.

[0046] Optionally, the controller can calculate the added water according to the quantity of the added rice. The controller is equipped with a sensor capable of detecting the water flow rate.

[0047] Optionally, water pumps are provided on both the first automatic component and the drainage component. A water pump is provided between the first solenoid valve and the first pipe, and a water pump is provided between the drain valve mechanism and the second pipe. The water inlet and drainage speeds are increased by adding water pumps.

[0048] Optionally, the density of the filter screen 23 is greater than 40 mesh, which can reduce the entry of rice into the first automatic component and the drainage component. Some impurities or broken rice and gravel have smaller particle sizes and can move between the rice grains, and will enter the drainage component along with the rice washing water during drainage. When the rice is cooked, the rice grains expand in size due to water absorption and will not enter the first automatic component and the drainage component from the filter screen. Optionally, the density of the filter screen is between 50 mesh and 200 mesh, and the filter screen is made of food-grade stainless steel.

[0049] As Figures 7 to 11An electric rice cooker with an ultrasonic rice washing function as shown, the drain valve mechanism 43 includes a driving member 431 connected to the controller, a drain valve body 432, a connecting rod 433 connected to the driving member 431, and a closing member 434 connected to the connecting rod 433 and extending into the drain valve body 432. The drain valve body 432 is provided with a first drain valve body opening 4321 communicating with the second pipe 41, a second drain valve body opening 4322 communicating with the water outlet pipe 42, a third drain valve body opening 4323 for the connecting rod 433 to extend into, and a receiving cavity 4324 for receiving the closing member 434. The driving member 431 drives the closing member 434 to move in the receiving cavity 4324 through the connecting rod 433. Further, as a preferred embodiment of the present invention rather than a limitation, when the rice cooker is in a non-operating state, the closing member closes the first drain valve body opening, and water cannot move into the receiving cavity after entering the second pipe from the second hole position in the inner cavity, so it cannot be discharged from the water outlet pipe. When the rice cooker starts the drainage function, the controller controls the driving member to start, and the driving member drives the closing member to move in the receiving cavity through the connecting rod. At this time, the closing member moves away from the first drain valve body opening, and water enters the receiving cavity from the first drain valve body opening and flows to the water outlet pipe through the second drain valve body opening to achieve drainage. When the rice cooker closes the drainage function, the controller controls the driving member to start, and the driving member drives the closing member to move in the receiving cavity through the connecting rod. At this time, the closing member moves towards the first drain valve body opening, and the closing member re-closes the first drain valve body opening.

[0050] As Figures 7 to 11 shown, an electric rice cooker with an ultrasonic rice washing function, the driving member 431 includes a motor 4311 and a crank portion 4312 connected to the motor 4311 and rotating along the circumferential side. An eccentric rod 43121 is provided on the crank portion 4312, and a mating groove 4331 connected to the eccentric rod 43121 is provided at one end of the connecting rod 433. Further, as a preferred embodiment of the present invention rather than a limitation, the mating groove extends along the moving direction of the closing member. When the motor starts, it drives the crank portion to rotate along the circumferential side, and the eccentric rod drives the connecting rod to move in a straight line direction through the mating groove when rotating along the circumferential side, so that the closing member can move away from or close to the first drain valve body opening in the receiving cavity.

[0051] As Figures 7 to 11An electric rice cooker with an ultrasonic rice washing function as shown. At the other end of the connecting rod 433, a limiting portion 4332 is provided. The closing member 434 is sleeved on the limiting portion 4332. The third opening 4323 of the drain valve body is arranged opposite to the first opening 4321 of the drain valve body. The outer diameter of the closing member 434 is larger than the outer diameter of the first opening 4321 of the drain valve body. Optionally, in order to improve the tightness of the connection between the connecting rod and the closing member, the limiting portion is provided with a protruding portion, and the inner side of the closing member is provided with a groove that cooperates with the protruding portion. When the closing member is sleeved on the limiting portion, since the outer diameter of the closing member is larger than the outer diameter of the first opening of the drain valve body, the closing member can seal the first opening of the drain valve body. At the same time, the third opening of the drain valve body is arranged opposite to the first opening of the drain valve body, and the closing member can open or close the first opening of the drain valve body through linear motion.

[0052] As Figures 1 to 8 An electric rice cooker with an ultrasonic rice washing function as shown. The closing member 434 is made of an elastic material. An elastic element 4333 is sleeved on the outer side of the connecting rod 433. One end of the elastic element 4333 abuts against the inner wall of the accommodating cavity 4324, and the other end abuts against one end of the closing member 434. Further, as a preferred embodiment of the present invention rather than a limitation, in order to improve the sealing performance between the closing member and the first opening of the drain valve body, the elastic element is in a reset state when not in operation, and the elastic force exerted by the elastic element on the closing member is greater than the thrust exerted by the closing member on the elastic element. By arranging the elastic element between the inner wall of the accommodating cavity and the closing member, the elastic element being in a continuously reset state can continuously push the closing member towards the first opening of the drain valve body, so that the end of the closing member can continuously fit on the first opening of the drain valve body.

[0053] As Figures 7 to 11 An electric rice cooker with an ultrasonic rice washing function as shown. The inner pot 2 is provided with a first connection cavity 24 that penetrates from the first hole position 21 of the inner pot to the inner cavity 3 and into which one end of the first pipe 31 extends. The inner pot 2 is provided with a second connection cavity 25 that penetrates from the inner cavity 3 to the second hole position 22 of the inner pot and into which one end of the second pipe 41 extends. Further, as a preferred embodiment of the present invention rather than a limitation, in order to enable the water in the first pipe to better enter the inner cavity, by providing the first connection cavity, there is a certain buffer space between the port of the first pipe and the filter screen, avoiding the first pipe from fitting with the filter screen. The water in the first pipe enters the inner cavity from the first connection cavity through the filter screen. Similarly, in order to enable the water in the inner cavity to better drain, by providing the second connection cavity, there is a certain buffer space between the port of the second pipe and the filter screen, avoiding the second pipe from fitting with the filter screen. The water enters the second connection cavity from the inner cavity through the filter screen and is discharged from the second pipe.

[0054] As Figures 7 to 11An electric rice cooker with an ultrasonic rice washing function as shown, one end of the first pipe 31 extending into the first connection cavity 24 is vertically arranged, and one end of the second pipe 41 extending into the second connection cavity 25 is vertically arranged. An elastic seal 20 is provided between the first pipe 31 and the first connection cavity 24, and an elastic seal 20 is provided between the second pipe 41 and the second connection cavity 25. Optionally, when the inner pot is connected to the first water inlet assembly and the drainage assembly, the inner pot moves vertically downward from the upper side until the first pipe extends into the first connection cavity and the second pipe extends into the second connection cavity. After the inner pot is installed, during the water inlet process, the elastic seal can prevent water from leaking out through the gap between the first pipe and the first connection cavity. During the drainage process, the elastic seal can prevent water from leaking out through the gap between the second pipe and the second connection cavity.

[0055] As Figures 7 to 11 shown, an electric rice cooker with an ultrasonic rice washing function, the housing 1 is further provided with a second water inlet assembly 5. The second water inlet assembly 5 includes a second solenoid valve connected to the water inlet pipe 32, a third pipe 52 located above the inner cavity 3, and a pressure pump 53 located between the second solenoid valve and the third pipe 52. Further, as a preferred embodiment of the present invention rather than a limitation, the water inlet pipe is connected to the first solenoid valve and the second solenoid valve through a tee joint. Water passes through the second solenoid valve from the water inlet pipe, is pressurized by the pressure pump and then passes through the third pipe, and is added to the inner cavity through the upper opening of the inner cavity.

[0056] Optionally, when the first water inlet assembly is blocked or the filter on the first hole position of the inner pot is blocked, the controller detects that the water inlet flow rate of the first solenoid valve is not within the normal range within a certain period of time. The controller closes the first solenoid valve and opens the second solenoid valve. Under the action of the pressure pump, water impacts into the inner cavity, and the impact force can disperse the rice while water is being inlet.

[0057] As Figures 1 to 11 shown, an electric rice cooker with an ultrasonic rice washing function, the housing 1 is further provided with a pressure assembly 7 and an air inlet pipe. The pressure assembly 7 respectively includes a third solenoid valve connected to the air inlet pipe, a fourth pipe located above the inner cavity 3, and a pressure pump 73 located between the third solenoid valve and the fourth pipe.

[0058] Optionally, during the process of ultrasonic cleaning and rice washing, when the controller starts the ultrasonic transducer, it also starts the third solenoid valve. Under the action of the pressure pump, air impacts into the inner cavity. While the ultrasonic transducer transmits shock waves to the side wall and bottom of the inner pot, the air can form an impact force on the upper side of the inner cavity to make the liquid in the inner cavity tumble, further dispersing and cleaning the rice.

[0059] As Figures 1 to 11An electric rice cooker with an ultrasonic rice washing function as shown. The inner pot 2 is provided with a handle 26, and the housing 1 is provided with a heating component located below the inner pot 2. The base 6 is provided with a groove 61 that cooperates with the handle 26. The heating component can cook rice by heating water. Optionally, through the cooperation of the handle and the groove, the two form a positioning effect, so that the first hole position of the inner pot and the second hole position of the inner pot can better align with the first pipe and the second pipe respectively, making the inner pot more stable.

[0060] Optionally, after the user inputs the reservation time and the amount of rice added, after reaching the reservation time and after multiple rice washings, the last amount of water added is 1.2 - 1.5 times the amount of rice added input by the user. The first solenoid valve and the second solenoid valve are closed, and the heating component heats the water in the inner pot and cooks the rice in the inner pot.

[0061] Embodiment 1

[0062] As Figures 1 to 11 shown, the implementation method of Embodiment 1 is as follows:

[0063] The density of the filter screen 23 is 50 meshes, and the filter screen 23 is made of food-grade stainless steel. The sealing member 434 is made of an elastic material, the outer diameter of the sealing member 434 is larger than the outer diameter of the first opening 4321 of the drain valve body, the sealing member 434 can seal the first opening 4321 of the drain valve body, and at the same time, the third opening 4323 of the drain valve body is arranged opposite to the first opening 4321, and an elastic element 4333 is sleeved outside the connecting rod 433.

[0064] When the inner pot 2 is connected to the first water inlet component 30 and the drain component 4, the inner pot 2 moves vertically downward from the upper side until the first pipe 31 extends into the first connection cavity 24 and the second pipe 41 extends into the second connection cavity 25. After the inner pot 2 is installed, during the water inlet process, the elastic seal 20 can prevent water from leaking out from the gap between the first pipe 31 and the first connection cavity 24. During the drainage process, the elastic seal 20 can prevent water from leaking out from the gap between the second pipe 41 and the second connection cavity 25.

[0065] By setting the first connection cavity 24, there is a certain buffer space between the port of the first pipe 31 and the filter screen 23, avoiding the first pipe 31 from fitting with the filter screen 23. The water in the first pipe 31 enters the inner cavity 3 through the filter screen 23 from the first connection cavity 24. By setting the second connection cavity 25, there is a certain buffer space between the port of the second pipe 41 and the filter screen 23, avoiding the second pipe 41 from fitting with the filter screen 23. The water enters the second connection cavity 25 from the inner cavity 3 through the filter screen 23 and is discharged from the second pipe 41.

[0066] After the user inputs a value, the controller starts the suction pump 93 within the agreed time. When the suction pump 93 is sucking, under the suction pressure, the valve body 911 compresses the elastomer 913 through the valve body limit block 9113, and the plug 9111 moves in the suction direction and separates from the first rice conveying pipe limit part 912. At this time, the first rice conveying pipe 91 opens, and the rice first enters the valve body opening 9112 from the rice storage bin 10, and enters the first rice conveying pipe 91 through the opening of the first rice conveying pipe limit part 912 and is sucked to the second rice conveying pipe 92, and the rice enters the inner cavity 3 from the second rice conveying pipe 92.

[0067] When the suction pump 93 stops running, the elastomer 913 pushes the valve body limit block 9113 to reset so that the plug 9111 contacts the first rice conveying pipe limit part 912, and the plug seals the opening of the first rice conveying pipe limit part 912.

[0068] When the rice cooker starts the water inlet function, the controller starts the first solenoid valve 33 and closes the drain valve mechanism 43. The water source enters the first pipe 31 from the water inlet pipe 32 through the first solenoid valve 33, and the water source enters the inner cavity 3 from the first hole position 21 of the inner pot. Until the water source reaches the preset value, the controller closes the first solenoid valve 33.

[0069] When the rice cooker starts the rice washing function, the ultrasonic sound source starts. Using the ultrasonic sound source to generate a certain frequency and voltage signal, it drives the ultrasonic transducer 11 and the inner wall of the inner pot 2 to vibrate at a high frequency. Using water as a medium, the vibration is transmitted to the water. By changing the pressure balance in the water, a low-pressure area is formed to generate many tiny bubbles. The bubbles spread along the vibration direction. Some bubbles directly contact the surface of the rice, and some bubbles enter the gaps between the rice grains. With the shock waves generated by the rupture of countless bubbles, relying on the oscillation generated by the ultrasonic wave in the liquid, the dirt on the surface of the rice is peeled off to achieve the purpose of cleaning.

[0070] When the rice cooker starts the drainage function, the controller controls the motor 4311 to start. The mating groove 4331 extends along the moving direction of the closure 434. When the motor 4311 starts, it drives the crank part 4312 to rotate along the circumferential side. When the eccentric rod 43121 rotates along the circumferential side, it drives the connecting rod 433 to move in a straight line direction through the mating groove 4331, so that the closure 434 can move in the receiving cavity 4324 away from the first opening 4321 of the drain valve body. The water enters the receiving cavity 4324 from the first opening 4321 of the drain valve body and flows to the water outlet pipe 42 through the second opening 4322 of the drain valve body to achieve drainage.

[0071] When the rice cooker turns off the drainage function, the controller controls the motor 4311 to start. When the motor 4311 starts, it drives the crank part 4312 to rotate along the circumferential side. When the eccentric rod 43121 rotates along the circumferential side, it drives the connecting rod 433 to move in a straight line direction through the mating groove 4331, so that the sealing member 434 can move in the receiving cavity 4324 towards the direction close to the first opening 4321 of the drainage valve body. The sealing member 434 re-seals the first opening 4321 of the drainage valve body. The elastic force exerted by the elastic element 4333 on the sealing member 434 is greater than the thrust exerted by the sealing member 434 on the elastic element 4333. By arranging the elastic element 4333 between the inner wall of the receiving cavity 4324 and the sealing member 434, the elastic element 4333 can be in a state of continuous reset and continuously push the sealing member 434 towards the first opening 4321 of the drainage valve body, so that the end of the sealing member 434 can continuously fit on the first opening 4321 of the drainage valve body.

[0072] After washing the rice multiple times and repeating the processes of water inlet and drainage multiple times, the first solenoid valve 33 is started. The controller controls the proportion of the added water to be 1.3 times the amount of rice according to the input amount of rice. The first water inlet assembly 30 adds an appropriate amount of water to the inner cavity 3 according to the input value until the water source reaches the preset value, and then the heating assembly is started to cook the rice.

[0073] Embodiment 2

[0074] Based on Embodiment 1, the difference in the rice washing implementation method in the inner cavity 3 in Embodiment 2 is as follows:

[0075] During the process of ultrasonic cleaning and washing the rice, while the controller starts the ultrasonic transducer, it also starts the third solenoid valve. Under the action of the pressure pump 73, air impacts the inner cavity 3. While the ultrasonic transducer 11 transmits shock waves to the side wall and the bottom of the inner pot 2, the air can form an impact force on the inner cavity 3 from the upper side of the inner cavity 3, so that the liquid in the inner cavity 3 tumbles, and further the rice can be dispersed and washed.

[0076] Embodiment 3

[0077] Based on Embodiment 1, the difference in the water inlet implementation method in the inner cavity 3 in Embodiment 3 is as follows:

[0078] The controller closes the first solenoid valve 33 and opens the second solenoid valve. Water passes through the second solenoid valve from the water inlet pipe 32, is pressurized by the pressure water pump 53, and then passes through the third pipe 52 to add water to the inner cavity 3 from the upper side opening of the inner cavity 3.

[0079] The above only further illustrates the technical content of the present utility model by way of examples for the convenience of readers' easier understanding, but it does not mean that the implementation manners of the present utility model are limited thereto. Any technical extension or re-creation made according to the present utility model shall be protected by the present utility model. The protection scope of the present utility model shall be subject to the claims.

Claims

1. An electric rice cooker with an ultrasonic rice washing function, comprising a housing (1), the housing (1) being provided with an inner pot (2), a base (6) for supporting the inner pot (2), and a controller, the inner pot (2) being provided with an inner cavity (3) with an opening at the upper end, characterized in that: The bottom of the inner pot (2) is provided with a first inner pot hole (21) and a second inner pot hole (22); the shell (1) is provided with a first water inlet assembly (30) connected to the first inner pot hole (21), a water discharge assembly (4) connected to the second inner pot hole (22), a rice storage bin (10) located on one side of the inner pot (2), a rice adding device (9) connected to the rice storage bin (10) at one end and to the inner cavity (3) at the other end, and an ultrasonic transducer (11); the ultrasonic transducer (11) is located between the inner pot (2) and the base (6) and is in contact with the outer side of the inner pot (2).

2. The electric rice cooker with ultrasonic rice washing function according to claim 1, characterized in that: A plurality of ultrasonic transducers (11) are provided, and the ultrasonic transducers (11) are arranged at intervals on the side of the inner pot (2) and the bottom of the inner pot (2).

3. The electric rice cooker with ultrasonic rice washing function according to claim 1, characterized in that: The rice adding device (9) comprises a first rice transport pipe (91) connected to the rice storage bin (10), a second rice transport pipe (92) connected to the upper end opening of the inner cavity (3), and a suction air pump (93) located between the first rice transport pipe (91) and the second rice transport pipe (92).

4. The electric rice cooker with ultrasonic rice washing function according to claim 3, characterized in that: The first rice transport pipe (91) is provided with a valve body (911) extending into the rice storage bin (10), and a first rice transport pipe limiting portion (912); the first rice transport pipe limiting portion (912) is provided with an opening for the valve body (911) to pass through; an end of the valve body (911) is provided with a plug (9111) in contact with the first rice transport pipe limiting portion (912); and an elastic body (913) is provided between the valve body (911) and the first rice transport pipe (91).

5. The electric rice cooker with ultrasonic rice washing function according to claim 4, characterized in that: The first rice transport pipeline (91) is also provided with a first limiting shell (914), the first limiting shell (914) is provided with a protrusion (9141), the protrusion (9141) is provided with a limiting groove (91411), and a protrusion opening (914111) for the valve body (911) to extend into, the valve body (911) is provided with a valve body opening (9112) communicating with the first rice transport pipeline (91), and a valve body limiting block (9113) located on the limiting groove (91411), the elastic body (913) is sleeved on the outside of the protrusion (9141), one end of the elastic body (913) is against the valve body limiting block (9113) and the other end is against the inner wall of the first limiting shell (914).

6. The electric rice cooker with ultrasonic rice washing function according to any one of claims 1 to 5, characterized in that: The first water inlet assembly (30) comprises a first pipe (31) extending into the first hole (21) of the inner pot, a water inlet pipe (32), and a first solenoid valve (33) located between the first pipe (31) and the water inlet pipe (32); the drainage assembly (4) comprises a second pipe (41) extending into the second hole (22) of the inner pot, a water outlet pipe (42), and a drainage valve mechanism (43) located between the second pipe (41) and the water outlet pipe (42); the first solenoid valve (33) and the drainage valve mechanism (43) are respectively electrically connected to the controller; and the first hole (21) of the inner pot and the second hole (22) of the inner pot are respectively provided with filter screens (23).

7. The electric rice cooker with ultrasonic rice washing function according to claim 6, characterized in that: The drain valve mechanism (43) comprises a driving member (431) connected to the controller, a drain valve body (432), a connecting rod (433) connected to the driving member (431), and a closing member (434) connected to the connecting rod (433) and extending into the drain valve body (432); the drain valve body (432) is provided with a first drain valve body opening (4321) communicating with the second pipe (41), a second drain valve body opening (4322) communicating with the water outlet pipe (42), a third drain valve body opening (4323) into which the connecting rod (433) extends, and an accommodating chamber (4324) for accommodating the closing member (434); the driving member (431) drives the closing member (434) to move in the accommodating chamber (4324) via the connecting rod (433).

8. The electric rice cooker with ultrasonic rice washing function according to claim 7, characterized in that: The driving member (431) comprises a motor (4311), a crank portion (4312) connected to the motor (4311) and rotating along the circumferential side, an eccentric rod (43121) being provided on the crank portion (4312), and a matching groove (4331) connected to the eccentric rod (43121) being provided at one end of the connecting rod (433).

9. The electric rice cooker with ultrasonic rice washing function according to claim 6, characterized in that: The housing (1) is also provided with a second water inlet assembly (5), the second water inlet assembly (5) comprising a second solenoid valve connected to the water inlet pipe (32), a third pipe (52) located on the upper side of the inner cavity (3), and a pressurized water pump (53) located between the second solenoid valve and the third pipe (52).

10. The electric rice cooker with ultrasonic rice washing function according to claim 6, characterized in that: The housing (1) is also provided with a pressure assembly (7) and an air intake pipe (8), wherein the pressure assembly (7) comprises a third solenoid valve connected to the air intake pipe, a fourth pipe located on the upper side of the inner cavity (3), and a pressure pump (73) located between the third solenoid valve and the fourth pipe.

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