Electric cooker capable of automatically draining and feeding water

Abstract

The utility model relates to the technical field of electric cookers, in particular to an electric cooker capable of automatically draining and feeding water, which comprises a shell, an inner pot and a controller are arranged on the shell, the inner pot is provided with an inner cavity with an opening at the upper end, a first inner pot hole site is arranged at the bottom of the inner pot, and a filter screen is arranged at the first inner pot hole site. The first water inlet assembly and the water drainage assembly are communicated with the first hole site of the inner pot, the connecting pipeline is communicated with the first hole site of the inner pot, the electromagnetic valve mechanism is communicated with the connecting pipeline, the first water inlet assembly comprises a water inlet pipeline connected with the electromagnetic valve mechanism, and the water drainage assembly comprises a water outlet pipeline connected with the electromagnetic valve mechanism. And the electromagnetic valve mechanism is electrically connected with the controller. According to the rice washing machine, the first water inlet assembly and the water drainage assembly are arranged, the effects of automatically washing rice and discharging rice washing water can be achieved, impurities can be filtered out in the washing process through the filter screen, and the situation that rice enters the first water inlet assembly and the water drainage assembly, and consequently blocking is caused is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rice cookers, in particular to a rice cooker with automatic drainage and water inlet. Background Art

[0002] Rice is one of the main protagonists in 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 of time 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, during the use 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 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 with an appropriate amount of water, and after setting 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 drained. 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 an odor 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 taste, 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 automatic drainage and water inlet 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-mentioned technical problem that the existing rice cooker with a reservation function needs 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 problem is:

[0007] An automatic drainage and water inlet rice cooker, comprising a housing, an inner pot and a controller are provided on the housing. The inner pot is provided with an inner cavity with an open upper end. A first hole position of the inner pot is provided at the bottom of the inner pot. A filter screen is provided at the first hole position of the inner pot. A first water inlet assembly and a drainage assembly communicating with the first hole position of the inner pot, a connecting pipe communicating with the first hole position of the inner pot, and a solenoid valve mechanism communicating with the connecting pipe are respectively provided on the housing. The first water inlet assembly includes a water inlet pipe connected to the solenoid valve mechanism. The drainage assembly includes a water outlet pipe connected to the solenoid valve mechanism. The solenoid valve mechanism is electrically connected to the controller.

[0008] Further, as a preferred embodiment of the present invention rather than a limitation, the density of the filter screen is greater than 40 mesh. The filter screen is circularly arranged and is connected to the side close to the connecting pipe.

[0009] Further, as a preferred embodiment of the present invention rather than a limitation, the solenoid valve mechanism includes a driving member connected to the controller, a valve body, a connecting rod connected to the driving member, and a plug connected to the connecting rod and extending into the valve body. The valve body is provided with a first valve body opening communicating with the connecting pipe, a second valve body opening communicating with the water outlet pipe, a third valve body opening for the connecting rod to extend into, a receiving cavity for receiving the plug, and a fourth valve body opening communicating with the water inlet pipe. The driving member drives the plug to move in the receiving cavity through the connecting rod.

[0010] Further, as a preferred embodiment of the present invention rather than a limitation, 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. A fitting groove connected to the eccentric rod is provided at one end of the connecting rod.

[0011] Further, as a preferred embodiment of the present invention rather than a limitation, a limiting portion is provided at the other end of the connecting rod. The plug is sleeved on the limiting portion. The third valve body opening is oppositely arranged with the first valve body opening. The outer diameter of the plug is greater than the outer diameter of the first valve body opening.

[0012] Further, as a preferred embodiment of the present invention rather than a limitation, the plug is made of an elastic material. An elastic body is sleeved on the outer side of the connecting rod. One end of the elastic body abuts against the inner wall of the receiving cavity and the other end abuts against one end of the plug.

[0013] Further, as a preferred embodiment of the present invention rather than a limitation, a third solenoid valve electrically connected to the controller is provided on the water inlet pipe and / or the fourth valve body opening. A fourth solenoid valve electrically connected to the controller is provided on the water outlet pipe and / or the second valve body opening.

[0014] Further, as a preferred embodiment rather than a limitation of the present utility model, the inner pot is provided with a connection cavity that penetrates from the direction of the first hole position of the inner pot to the inner cavity and into which one end of the connection pipe extends. One end of the connection pipe extending into the connection cavity is vertically arranged. An elastic seal is provided between the connection pipe and the connection cavity, and the filter screen is located in the connection cavity.

[0015] Further, as a preferred embodiment rather than a limitation of the present utility model, the housing is further provided with a second water inlet assembly, which includes a second solenoid valve connected to the water inlet pipe, a third pipe located above the inner cavity, and a pressurized water pump located between the second solenoid valve and the third pipe.

[0016] Further, as a preferred embodiment rather than a limitation of the present utility model, the inner pot is provided with a handle, the housing is provided with a base for supporting the inner pot, and a heating assembly located below the inner pot. The base is provided with a groove that cooperates with the handle.

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

[0018] 1. By setting the first water inlet assembly and the drainage assembly, the present utility model realizes the automatic water inlet and automatic drainage functions of the rice cooker at the reserved time, and can achieve the effects of automatically cleaning the rice and discharging the rice washing water. By setting the filter screen, impurities can be filtered out during the cleaning process, preventing the rice from entering the first water inlet assembly and the drainage assembly and causing blockage. The present utility model can avoid the disadvantages of traditional rice cookers with a reservation function, which need to mix water and rice first and then wait for a long time for cooking, thus affecting the taste of the food and easily causing food spoilage.

[0019] 2. When the rice cooker starts the water inlet function, the controller activates the third solenoid valve to open the fourth opening of the valve body and closes the second opening of the valve body. The water source enters the connection pipe from the water inlet pipe through the first opening of the valve body, and 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 third solenoid valve. When the rice cooker starts the drainage function, the controller activates the fourth solenoid valve to open the second opening of the valve body and closes the third solenoid valve. The water source is discharged from the first hole position of the inner pot to the outside of the inner cavity, and the water source enters the outside of the second opening of the valve body from the first opening of the valve body until the water source is discharged, then the controller closes the fourth solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an internal schematic diagram of a rice cooker with automatic drainage and water inlet according to the present utility model.

[0021] Figure 2 It is a top view of a rice cooker with automatic drainage and water inlet according to the present utility model.

[0022] Figure 3 For Figure 2 A - A sectional view of the solenoid valve mechanism in the closed state.

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

[0024] Figure 5 For Figure 2 A - A sectional view of the solenoid valve mechanism in the open state.

[0025] Figure 6 For Figure 5 Enlarged view of part C.

[0026] Figure 7 Schematic diagram of the solenoid valve mechanism of the present utility model. Specific embodiments

[0027] The following will describe in detail the embodiments of the present utility model with reference to the accompanying drawings.

[0028] As Figures 1 to 7 shown, an automatic - draining and - filling rice cooker includes a housing 1. An inner pot 2 and a controller are provided on the housing 1. The inner pot 2 has an inner cavity 20 with an open upper end. A first inner - pot hole 21 is provided at the bottom of the inner pot 2. A filter screen 23 is provided at the first inner - pot hole 21. A first water - inlet assembly 3, a drainage assembly 4, a connecting pipe 7 communicating with the first inner - pot hole 21, and a solenoid valve mechanism 8 communicating with the connecting pipe 7 are respectively provided on the housing 1. The first water - inlet assembly 3 includes a water - inlet pipe 32 connected to the solenoid valve mechanism 8. The drainage assembly 4 includes a water - outlet pipe 42 connected to the solenoid valve mechanism 8. The solenoid valve mechanism 8 is electrically connected to the controller. The present utility model realizes the functions of automatic water inlet and automatic drainage of the rice cooker at the reserved time through the first water - inlet assembly and the drainage assembly, and can achieve the effects of automatically cleaning rice and discharging the rice - washing water. By providing a filter screen, impurities can be filtered out during the cleaning process, preventing rice from entering the first water - inlet assembly and the drainage assembly and causing blockage. The present utility model can avoid the disadvantages of traditional rice cookers with a reservation function, which need to mix water and rice first and then wait for a long time for cooking, thus affecting the taste of food and easily causing food spoilage.

[0029] Optionally, the connecting pipe is made of a heat - resistant and temperature - resistant material.

[0030] Optionally, the controller can calculate the amount of water added according to the amount of rice added, and a sensor capable of detecting the water flow rate is included on the controller.

[0031] Optionally, water pumps for controlling the inflow and outflow of water are provided on the first water inlet assembly and the drainage assembly. Specifically, a water pump can be provided between the solenoid valve mechanism and the connecting pipe, or water pumps can be respectively provided on the first water inlet assembly and the drainage assembly to increase the water inflow and drainage speed by adding water pumps.

[0032] As Figures 1 to 7 shown in an automatic drainage and water inlet rice cooker, the density of the filter screen 23 is greater than 40 mesh, the filter screen 23 is circularly arranged, and the filter screen 23 is connected to one side close to the connecting pipe 7. Such a setting can reduce the direct entry of rice into the first water inlet assembly and the drainage assembly. Some impurities or broken rice and gravel have smaller particle sizes and can move between the rice grains, and will enter the drainage assembly 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 directly enter the first water inlet assembly and the drainage assembly from the filter screen. Optionally, the filter screen density is between 40 mesh and 200 mesh, and the filter screen is made of food-grade stainless steel.

[0033] Furthermore, a plurality of ultrasonic transducers 11 are provided at the bottom and side of the inner pot. The rice cooker cleans the rice through the ultrasonic transducers 11. The ultrasonic sound source is started, and a certain frequency and voltage signal are generated by the ultrasonic sound source to drive the ultrasonic transducers and the inner wall of the inner pot 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 waves in the liquid, the dirt on the surface of the rice is peeled off to achieve the purpose of cleaning.

[0034] As Figures 3 to 7 shown in an automatic drainage and water inlet rice cooker, the solenoid valve mechanism 8 includes a driving member 431 connected to the controller, a valve body 432, a connecting rod 433 connected to the driving member 431, and a plug 434 connected to the connecting rod 433 and extending into the valve body 432. The valve body 432 is provided with a first valve body opening 4321 communicating with the connecting pipe 7, a second valve body opening 4322 communicating with the water outlet pipe 42, a third valve body opening 4323 for the connecting rod 433 to extend into, a receiving cavity 4324 for receiving the plug 434, and a fourth valve body opening 4325 communicating with the water inlet pipe 32. The driving member 431 drives the plug 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 plug closes the first valve body opening, and the water entering the connecting pipe from the first hole position in the inner cavity cannot move to the receiving cavity, so it cannot be discharged from the water outlet pipe.

[0035] When the rice cooker starts the drainage function, the controller controls the driving member to start. The driving member drives the plug to move in the accommodating cavity through the connecting rod. At this time, the plug moves away from the first opening of the valve body, and water enters the accommodating cavity from the first opening of the valve body and flows out through the second opening of the valve body to the water outlet pipe to achieve drainage. When the rice cooker closes the drainage function, the controller controls the driving member to start. The driving member drives the plug to move in the accommodating cavity through the connecting rod. At this time, the plug moves towards the first opening of the valve body, and the plug reseals the first opening of the valve body.

[0036] When the rice cooker starts the water inlet function, the controller controls the driving member to start. The driving member drives the plug to move in the accommodating cavity through the connecting rod. At this time, the plug moves away from the first opening of the valve body, and water moves from the water inlet pipe, enters the accommodating cavity through the fourth opening of the valve body and flows out through the first opening of the valve body to the connecting pipe to achieve water inlet. When the rice cooker closes the water inlet function, the controller controls the driving member to start. The driving member drives the plug to move in the accommodating cavity through the connecting rod. At this time, the plug moves towards the first opening of the valve body, and the plug reseals the first opening of the valve body.

[0037] As Figures 3 to 7 shown in a rice cooker with automatic drainage and water inlet, 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 rather than a limitation of the present invention, the mating groove extends along the moving direction of the plug. When the motor starts, it drives the crank portion to rotate along the circumferential side. When the eccentric rod rotates along the circumferential side, it drives the connecting rod to move in a straight line direction through the mating groove, so that the plug can move away from or towards the first opening of the valve body in the accommodating cavity.

[0038] As Figures 3 to 7 shown in a rice cooker with automatic drainage and water inlet, a limiting portion 4332 is provided at the other end of the connecting rod 433. The plug 434 is sleeved on the limiting portion 4332. The third opening 4323 of the valve body is disposed opposite to the first opening 4321 of the valve body. The outer diameter of the plug 434 is larger than the outer diameter of the first opening 4321 of the valve body. Optionally, in order to improve the tightness of the connection between the connecting rod and the plug, the limiting portion is provided with a protruding portion, and a groove cooperating with the protruding portion is provided inside the plug. When the plug is sleeved on the limiting portion, since the outer diameter of the plug is larger than the outer diameter of the first opening of the valve body, the plug can seal the first opening of the valve body. At the same time, the third opening of the valve body is disposed opposite to the first opening of the valve body, and the plug can open or close the first opening of the valve body through linear motion.

[0039] As Figures 3 to 7An automatic drainage and water inlet rice cooker as shown, the plug 434 is made of an elastic material, an elastic body 4333 is sleeved outside the connecting rod 433, one end of the elastic body 4333 abuts against the inner wall of the accommodating cavity 4324 and the other end abuts against one end of the plug 434. Further, as a preferred embodiment of the present invention rather than a limitation, in order to improve the sealing performance between the plug and the first opening of the valve body, the elastic body is in a reset state when not in operation, the elastic force exerted by the elastic body on the plug is greater than the thrust exerted by the plug on the elastic body. By arranging the elastic body between the inner wall of the accommodating cavity and the plug, the elastic body being in a continuously reset state can continuously push the plug towards the direction of the first opening of the valve body, so that the end of the plug can continuously fit on the first opening of the valve body.

[0040] As Figures 3 to 7 An automatic drainage and water inlet rice cooker as shown, the water inlet pipe 32 and / or the fourth opening 4325 of the valve body are provided with a third solenoid valve electrically connected to the controller, and the water outlet pipe 42 and / or the second opening 4322 of the valve body are provided with a fourth solenoid valve electrically connected to the controller. Further, as a preferred embodiment of the present invention rather than a limitation, the third solenoid valve can be located at the end of the water inlet pipe, or at the upstream end or downstream end of the fourth opening of the valve body, and the fourth solenoid valve can be located at the end of the water outlet pipe, or at the upstream end or downstream end of the second opening of the valve body.

[0041] When the rice cooker starts the water inlet function, the controller activates the third solenoid valve to open the fourth opening of the valve body and closes the second opening of the valve body. The water source enters the connecting pipe from the water inlet pipe through the first opening of the valve body, and 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 third solenoid valve. When the rice cooker starts the drainage function, the controller activates the fourth solenoid valve to open the second opening of the valve body and closes the third solenoid valve. The water source is discharged from the first hole position of the inner pot to the outside of the inner cavity, and the water source enters the outside of the second opening of the valve body from the first opening of the valve body until the water source is discharged, then the controller closes the fourth solenoid valve.

[0042] As Figures 3 to 6An automatic drainage and water inlet rice cooker as shown. The inner pot 2 is provided with a connection cavity 70 that penetrates from the direction of the first hole position 21 of the inner pot to the inner cavity 20 and into which one end of the connection pipe 7 extends. One end of the connection pipe 7 extending into the connection cavity 70 is vertically arranged. An elastic seal 200 is provided between the connection pipe 7 and the connection cavity 70. The filter screen 23 is located in the connection cavity 70. Further, as a preferred embodiment of the present invention rather than a limitation, the upper end surface of the filter screen is flush with the upper end surface of the first hole position of the inner pot. In order to enable the water in the connection pipe to better enter the inner cavity, by providing a connection cavity, there is a certain buffer space between the port of the connection pipe and the upper end surface of the connection cavity, avoiding the upper end surface of the connection pipe being flush with the end surface of the filter screen, thereby reducing the difficulty and precision problems of the assembly of the connection pipe. The filter screen can be connected to the first hole position of the inner pot by welding. When water enters, the water in the connection pipe enters the inner cavity through the filter screen in the connection cavity. Similarly, in order to enable the water in the inner cavity to be better discharged, the water passes through the filter screen from the inner cavity into the connection cavity and is discharged from the connection pipe.

[0043] Optionally, when the inner pot is connected to the connection pipe, the inner pot moves vertically downward from the upper side until the connection pipe extends into the connection cavity. After the inner pot is installed, during the water inlet process, the elastic seal can prevent water from leaking out from the gap between the connection pipe and the connection cavity. Similarly, during the drainage process, the elastic seal can prevent water from leaking out from the gap between the connection pipe and the connection cavity.

[0044] As Figure 3 An automatic drainage and water inlet rice cooker as shown. 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 20, 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 solenoid valve mechanism 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 to add water to the inner cavity from the upper side opening of the inner cavity.

[0045] Optionally, when the first water inlet assembly is blocked or the filter screen on the first hole position of the inner pot is blocked, the controller detects that the water inlet flow rate of the solenoid valve mechanism is not within the normal range within a certain period of time. The controller closes the solenoid valve mechanism and opens the second solenoid valve. The water impacts into the inner cavity under the action of the pressure pump, and the impact force can disperse the rice while water enters.

[0046] As Figures 1 to 3An automatic drainage and water inlet rice cooker as shown, the inner pot 2 is provided with a handle 26, the housing 1 is provided with a base 6 for supporting the inner pot 2, and a heating component located below the inner pot 2, and the base 6 is provided with a groove 61 cooperating with the handle 26. 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 can be better aligned with the connecting pipe, making the inner pot more stable.

[0047] Optionally, the housing is further provided with an automatic rice adding component, which realizes the function of soaking and cleaning rice through automatic rice adding and automatic water inlet and drainage. The controller includes a pressure sensor capable of detecting the weight of the added rice. The controller analyzes and controls the water addition amount during cooking according to the detected quantity of the added rice, and the inner pot can be heated by the heating component, finally realizing the function of automatic rice cooking.

[0048] Optionally, after the user inputs the reservation time and the amount of added rice, after reaching the reservation time and after multiple times of washing, the last water addition amount is 1.2 - 1.5 times the amount of rice added by the user. The electromagnetic valve mechanism and the second electromagnetic valve are closed, the heating component heats the water in the inner pot, and the rice is cooked in the inner pot.

[0049] Embodiment 1

[0050] As Figures 1 to 7 shown, the implementation manner of Embodiment 1 is as follows:

[0051] The density of the filter screen 23 is 50 meshes, and the filter screen 23 is made of food-grade stainless steel. The plug 434 is made of an elastic material, the outer diameter of the plug 434 is larger than the outer diameter of the first opening 4321 of the valve body, the plug 434 can seal the first opening 4321 of the valve body, and at the same time the third opening 4323 of the valve body is arranged opposite to the first opening 4321, and an elastic body 4333 is sleeved outside the connecting rod 433.

[0052] When the inner pot 2 is connected to the connecting pipe 7, the inner pot 2 moves vertically downward from the upper side until the connecting pipe 7 extends into the connecting cavity 70. After the inner pot 2 is installed, during the water inlet process, the elastic seal 200 can prevent water from leaking out from the gap between the connecting pipe 7 and the connecting cavity 70, and during the water drainage process, the elastic seal 200 can prevent water from leaking out from the gap between the connecting pipe 7 and the connecting cavity 70.

[0053] The upper end surface of the filter screen 23 is flush with the upper end surface of the first inner pot hole 21. In order to enable the water in the connecting pipe 7 to better enter the inner cavity 20, a connecting cavity 70 is provided. There is a certain buffer space between the port of the connecting pipe 7 and the upper end surface of the connecting cavity 70. The filter screen 23 is connected to the first inner pot hole 21 by welding. When water enters, the water in the water inlet pipe 32 enters the inner cavity 20 through the filter screen 23 from the connecting cavity 70. Similarly, in order to enable the water in the inner cavity 20 to better drain, the water passes through the filter screen 23 from the inner cavity 20 into the connecting cavity 70 and is discharged from the water outlet pipe 42.

[0054] After the user inputs the reservation time and the amount of rice added, when the rice cooker reaches the reservation time and starts the water inlet function, the controller activates the third solenoid valve to open the fourth opening 4325 of the valve body and closes the second opening 4321 of the valve body. The water source enters the connecting pipe 7 from the water inlet pipe 32 through the first opening 4321 of the valve body. The water source enters the inner cavity 20 from the first inner pot hole 21 until the added water reaches the preset value, and then the controller closes the third solenoid valve. When the rice cooker starts the drainage function, the controller activates the fourth solenoid valve to open the second opening 4321 of the valve body and closes the third solenoid valve. The water source is discharged from the first inner pot hole 21 to the outside of the inner cavity 20, and the water source enters the outside of the second opening 4321 of the valve body from the first opening 4321 of the valve body until the water source is discharged, and then the controller closes the fourth solenoid valve.

[0055] The rice cooker cleans the rice through the ultrasonic transducer 11. The ultrasonic sound source is activated, and a certain frequency and voltage signal are generated by the ultrasonic sound source, driving the ultrasonic transducer 11 and the inner wall of the inner pot 2 to vibrate at a high frequency together. Using water as the 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.

[0056] 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 plug 434. When the motor 4311 starts, it drives the crank portion 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, enabling the plug 434 to move away from the first opening 4321 of the valve body in the accommodating cavity 4324. The water enters the accommodating cavity 4324 from the first opening 4321 of the valve body and flows to the water outlet pipe 42 through the second opening 4322 of the valve body to achieve drainage.

[0057] 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 plug 434 can move in the accommodating cavity 4324 towards the direction close to the first opening 4321 of the valve body. The plug 434 re-closes the first opening 4321 of the valve body. The elastic force exerted by the elastic body 4333 on the plug 434 is greater than the thrust exerted by the plug 434 on the elastic body 4333. Since the elastic body 4333 is arranged between the inner wall of the accommodating cavity 4324 and the plug 434, the elastic body 4333 is in a state of always resetting and can continuously push the plug 434 towards the first opening 4321 of the valve body, so that the end of the plug 434 can continuously fit on the first opening 4321 of the valve body.

[0058] Similarly, when the rice cooker starts the water inlet function or turns off the water inlet function, the operation mode and working principle of the solenoid valve mechanism 8 are the same. After washing the rice multiple times and repeating the water inlet and drainage multiple times, the controller controls the water addition ratio to be 1.3 times the amount of rice according to the input amount of rice. After the water source reaches the preset value, the controller closes the solenoid valve mechanism 8 and starts the heating component.

[0059] Embodiment 2

[0060] Based on Embodiment 1, the water inlet implementation method of the inner cavity 20 in Embodiment 2 is different as follows:

[0061] The controller closes the solenoid valve mechanism 8 and opens the second solenoid valve. Water passes through the second solenoid valve from the water inlet pipe 32, is pressurized by the pressurizing water pump 53 and then passes through the third pipe 52, and water is added to the inner cavity 20 from the upper opening of the inner cavity 20.

[0062] The above only further illustrates the technical content of the present invention with embodiments to make it easier for readers to understand, but it does not mean that the implementation modes of the present invention are limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention. The protection scope of the present invention is subject to the claims.

Claims

1. An electric rice cooker with automatic water drainage and water inlet, comprising a housing (1), an inner pot (2) and a controller provided on the housing (1), the inner pot (2) being provided with an inner cavity (20) 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 the first inner pot hole (21) is provided with a filter (23). The housing (1) is provided with a first water inlet assembly (3) and a water discharge assembly (4) connected to the first inner pot hole (21), a connecting pipe (7) connected to the first inner pot hole (21), and a solenoid valve mechanism (8) connected to the connecting pipe (7). The first water inlet assembly (3) includes a water inlet pipe (32) connected to the solenoid valve mechanism (8), and the water discharge assembly (4) includes a water outlet pipe (42) connected to the solenoid valve mechanism (8). The solenoid valve mechanism (8) is electrically connected to the controller.

2. The electric rice cooker with automatic water drainage and water inlet according to claim 1, characterized in that: The density of the filter screen (23) is greater than 40 meshes, the filter screen (23) is arranged in a circular shape, and the filter screen (23) is connected to a side close to the connecting pipe (7).

3. The electric rice cooker with automatic water drainage and water inlet according to claim 1, characterized in that: The solenoid valve mechanism (8) comprises a driving member (431) connected to the controller, a valve body (432), a connecting rod (433) connected to the driving member (431), and a plug (434) connected to the connecting rod (433) and extending into the valve body (432); the valve body (432) is provided with a first valve body opening (4321) communicating with the connecting pipe (7), a second valve body opening (4322) communicating with the water outlet pipe (42), a third valve body opening (4323) into which the connecting rod (433) extends, a receiving chamber (4324) for receiving the plug (434), and a fourth valve body opening (4325) communicating with the water inlet pipe (32); the driving member (431) drives the plug (434) to move in the receiving chamber (4324) via the connecting rod (433).

4. The electric rice cooker with automatic water drainage and water inlet according to claim 3, 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).

5. The electric rice cooker with automatic water drainage and water inlet according to claim 3, characterized in that: The other end of the connecting rod (433) is provided with a limiting portion (4332), the plug (434) is sleeved on the limiting portion (4332), the third opening (4323) of the valve body is arranged opposite to the first opening (4321) of the valve body, and the outer diameter of the plug (434) is greater than the outer diameter of the first opening (4321) of the valve body.

6. The electric rice cooker with automatic water discharge and water inlet according to claim 5, characterized in that: The plug (434) is made of an elastic material, and an elastic body (4333) is sleeved on the outer side of the connecting rod (433), one end of the elastic body (4333) abuts against the inner wall of the accommodating cavity (4324) and the other end abuts against one end of the plug (434).

7. The electric rice cooker with automatic water discharge and water inlet according to claim 3, characterized in that: The water inlet pipe (32) and / or the fourth opening (4325) of the valve body is provided with a third solenoid valve electrically connected to the controller, and the water outlet pipe (42) and / or the second opening (4322) of the valve body is provided with a fourth solenoid valve electrically connected to the controller.

8. An electric rice cooker with automatic water discharge and water inlet according to any one of claims 1 to 7, characterized in that: The inner pot (2) is provided with a connecting cavity (70) which extends from the first hole (21) of the inner pot to the inner cavity (20) and into which one end of the connecting pipe (7) extends. The end of the connecting pipe (7) extending into the connecting cavity (70) is arranged vertically. An elastic sealing member (200) is provided between the connecting pipe (7) and the connecting cavity (70). The filter screen (23) is located in the connecting cavity (70).

9. An electric rice cooker with automatic water discharge and water inlet according to any one of claims 1 to 7, 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 (20), and a pressurized water pump (53) located between the second solenoid valve and the third pipe (52).

10. An electric rice cooker with automatic water discharge and water inlet according to any one of claims 1 to 7, characterized in that: The inner pot (2) is provided with a handle (26), the shell (1) is provided with a base (6) for supporting the inner pot (2), and a heating component located at the lower side of the inner pot (2), and the base (6) is provided with a groove (61) that cooperates with the handle (26).

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