A dishwasher and a control method thereof

Abstract

The embodiment of the application provides a kind of dishwasher and its control method, it is related to dishwasher technical field.The dishwasher includes: inner container;Water tank, water tank and the communication of inner container is equipped with plane filter screen;Washing pump;Sewage storage chamber, with sewage storage chamber, circulation import, circulation export and sewage outlet, sewage storage chamber is equipped with sewage filter screen at circulation export;Split-flow pump;Drain pump;Turbidity sensor, for detecting the turbidity value of water;Controller is configured as: control washing pump action, water in water tank is pumped into inner container and washes tableware;Obtain the turbidity value of water;In the case where turbidity value is less than turbidity threshold value, control split-flow pump and pump water in water tank into sewage storage chamber, and make water in sewage storage chamber pass through circulation export and after filtering by sewage filter screen, into water tank;In the case where turbidity value is greater than or equal to turbidity threshold value;Control washing pump to stop;Control split-flow pump to operate, make circulation import close;Control drain pump action, water in sewage storage chamber is discharged to outside.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dishwashers, in particular to a dishwasher and a control method thereof. BACKGROUND

[0002] The dishwasher is an equipment for automatically cleaning dishes, chopsticks, plates, dishes, knives and forks. At present, the full-automatic dishwasher on the market uses a flat filter screen to filter and recycle the washing water. However, during the washing process of the dishwasher, different degrees of dirtiness of the dishes are encountered, resulting in different turbidity of the washing water. If the washing water with high turbidity is recycled, the dishes will not be cleaned, which affects the user experience. SUMMARY

[0003] The embodiments of the present application provide a dishwasher and a control method thereof, which are used to improve the cleaning effect of the dishwasher on dishes.

[0004] In order to achieve the above-mentioned purpose, the technical scheme is adopted as follows:

[0005] In a first aspect, the embodiments of the present application provide a dishwasher, which comprises:

[0006] an inner container;

[0007] a water tank, which is communicated with the inner container, and a flat filter screen is arranged at the communication position of the water tank and the inner container;

[0008] a washing pump, which is communicated with the water tank and the inner container;

[0009] a dirt storage chamber, which has a dirt storage cavity, a circulating inlet, a circulating outlet and a dirt outlet communicated with the dirt storage cavity, the circulating outlet is communicated with the water tank, and a sewage filter screen is arranged at the circulating outlet in the dirt storage chamber;

[0010] a shunt pump, which is communicated with the water tank and the circulating inlet of the dirt storage cavity, and the shunt pump comprises a first working state and a second working state;

[0011] a drainage pump, which is communicated with the dirt outlet and the outside;

[0012] a turbidity sensor, which is used to detect the turbidity value of the water in the dirt storage cavity;

[0013] a controller, which is connected with the washing pump, the shunt pump, the drainage pump and the turbidity sensor, and the controller is configured to:

[0014] control the washing pump to operate, and pump the water in the water tank into the inner container to wash the dishes;

[0015] obtain the turbidity value of the water in the dirt storage cavity;

[0016] In the case that the turbidity value is less than the turbidity threshold value, the shunt pump is controlled to operate in the first working state, and the water in the sink is pumped into the sewage storage cavity through the circulating inlet, and the water in the sewage storage cavity is filtered through the sewage filter screen and then enters the sink through the circulating outlet;

[0017] In the case that the turbidity value is greater than or equal to the turbidity threshold value, the washing pump is controlled to stop, the shunt pump is controlled to operate in the second working state, the circulating inlet is closed, the circulating outlet is closed, and the water in the sewage storage cavity is discharged to the outside.

[0018] The embodiments of the present application bring at least the following beneficial effects: the embodiments of the present application provide a dishwasher with a sewage storage cavity. During the process of washing tableware in the dishwasher, the turbidity value of the water in the sewage storage cavity is obtained. In the case that the turbidity value is less than the turbidity threshold value, the water is filtered through the sewage filter screen and then enters the sink to be recycled, and the turbid matter in the water is left in the sewage storage cavity and cannot pass through the sewage filter screen. In the case that the turbidity value is greater than or equal to the turbidity threshold value, the water containing the turbid matter in the sewage storage cavity is discharged to the outside, so that the turbidity value of the water recycled in the dishwasher is always less than the turbidity threshold value, and the washing effect of the dishwasher on the tableware can be improved.

[0019] In some embodiments, the dishwasher further comprises: a first water flow check tongue connected with the sewage storage cavity, the first water flow check tongue being located in the sewage storage cavity and arranged at the circulating inlet; a second water flow check tongue connected with the sewage storage cavity, the second water flow check tongue being located in the sink and arranged at the circulating outlet; in the case that the shunt pump operates in the first working state, the first water flow check tongue opens the circulating inlet under the impact of the water flow output by the shunt pump, and the second water flow check tongue opens the circulating outlet under the water pressure in the sewage storage cavity; in the case that the shunt pump operates in the second working state, a negative pressure is formed at the circulating inlet, and the first water flow check tongue closes the circulating inlet under the negative pressure at the circulating inlet; in the case that the drain pump is actuated, a negative pressure is formed in the sewage storage cavity, and the second water flow check tongue closes the circulating outlet under the negative pressure in the sewage storage cavity.

[0020] In some embodiments, the sink comprises a first cavity and a second cavity, and the inside of the sink is provided with a fine filter screen connected with the sink and separating the first cavity and the second cavity; the first cavity is in communication with the inner container and the washing pump, the second cavity is in communication with the shunt pump, and the second water flow check tongue is arranged in the first cavity.

[0021] In some embodiments, the washing process of the dishwasher comprises a pre-washing stage, a main washing stage, a hot rinsing stage and a drying stage which are sequentially operated; the controller performing the obtaining of the turbidity value of the water in the sewage storage cavity is specifically configured to: obtain a target stage in which the dishwasher is located in the washing process, the target stage comprising the pre-washing stage and the main washing stage; and obtain the turbidity value of the water in the sewage storage cavity in the target stage in the washing process of the dishwasher.

[0022] In some embodiments, the washing process of the dishwasher further comprises a transition stage, the transition stage is after the main washing stage, and the transition stage is before the hot rinsing stage; the target stage further comprises the transition stage.

[0023] In some embodiments, the dishwasher further comprises a water inlet valve connected with the controller, and a water level detector, the water inlet valve is connected with the inner container, and the water level detector is used to detect the water level height of the water in the inner container; the controller is further configured to: acquire the water level height; control the water inlet valve to open in the case that the water level height is less than a first water level height threshold; control the water inlet valve to close in the case that the water level height is greater than or equal to the first water level height threshold.

[0024] In some embodiments, the controller is further configured to: control the washing pump and the diversion pump to stop running, and control the drainage pump to act after the current target stage ends; wherein, in the case that the washing pump and the diversion pump stop running and the drainage pump acts, a negative pressure is formed in the storage cavity, the second water flow check valve closes the circulation outlet under the action of the negative pressure in the storage cavity, and the first water flow check valve opens the circulation inlet under the action of the negative pressure in the storage cavity.

[0025] In the second aspect, the embodiments of the present application provide a control method of a dishwasher, the method comprising: controlling a washing pump to act to pump water in a sink into an inner container to wash dishes; acquiring a turbidity value of water in a storage cavity; controlling a diversion pump to run in a first working state and pump water in the sink into the storage cavity through a circulation inlet, and make the water in the storage cavity enter the sink through a circulation outlet and pass through a sewage filter screen for filtering in the case that the turbidity value is less than a turbidity threshold; controlling the washing pump to stop, controlling the diversion pump to run in a second working state to make the circulation inlet closed, and controlling a drainage pump to act to make the circulation outlet closed and discharge the water in the storage cavity to the outside in the case that the turbidity value is greater than or equal to the turbidity threshold.

[0026] In some embodiments, the acquiring of the turbidity value of the water in the storage cavity comprises: acquiring a target stage of the dishwasher in a washing process, the target stage comprising a pre-washing stage and a main washing stage; acquiring the turbidity value of the water in the storage cavity in the target stage of the washing process of the dishwasher.

[0027] In some embodiments, the control method further comprises: acquiring a water level height; controlling a water inlet valve to open in the case that the water level height is less than a first water level height threshold; controlling the water inlet valve to close in the case that the water level height is greater than or equal to the first water level height threshold.

[0028] In some embodiments, the control method further comprises: after the current target stage ends, controlling the washing pump and the diversion pump to stop running, and controlling the drainage pump to act; wherein, under the condition that the washing pump and the diversion pump stop running and the drainage pump acts, a negative pressure is formed in the dirt storage cavity, the second water flow check valve closes the circulation outlet under the action of the negative pressure in the dirt storage cavity, and the first water flow check valve opens the circulation inlet under the action of the negative pressure in the dirt storage cavity.

[0029] In a third aspect, the embodiments of the present application provide a controller, comprising: one or more processors; one or more memories; wherein the one or more memories are configured to store computer program codes, the computer program codes comprising computer instructions, when the one or more processors execute the computer instructions, the controller executes any one of the control methods provided in the second aspect and the embodiments.

[0030] In a fourth aspect, the embodiments of the present application provide a computer readable storage medium, the computer readable storage medium comprising computer instructions, when the computer instructions are controlled on a computer, the computer executes any one of the control methods provided in the second aspect and the embodiments.

[0031] In a fifth aspect, the embodiments of the present application provide a computer program product, the computer program product can be directly loaded into a memory and contains software codes, the computer program product is loaded and executed by a computer, and can realize the control method provided in the second aspect and the embodiments.

[0032] It should be noted that the above computer instructions can be stored in the computer readable storage medium in whole or in part. The computer readable storage medium can be packaged together with the processor of the controller, or packaged separately from the processor of the controller, and the present application does not limit this.

[0033] The beneficial effects of the second aspect to the fifth aspect described in the present application can be analyzed with reference to the beneficial effects of the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the technical solutions of the present application, and constitute a part of the specification, and are used to explain the technical solutions of the present application together with the embodiments of the present application, and do not constitute a limitation on the technical solutions of the present application.

[0035] Figure 1 Fig. 1 is a structural schematic diagram of a dishwasher provided by the present application;

[0036] Figure 2 Fig. 2 is a structural schematic diagram of another dishwasher provided by the present application;

[0037] Figure 3Another structural schematic diagram of a dish washing machine provided for an embodiment of the present application;

[0038] Figure 4 Another structural schematic diagram of a dish washing machine provided for an embodiment of the present application;

[0039] Figure 5 A hardware configuration block diagram of a dish washing machine provided for an embodiment of the present application;

[0040] Figure 6 A washing process schematic diagram of a dish washing machine provided for an embodiment of the present application;

[0041] Figure 7 A washing process schematic diagram of a dish washing machine provided for an embodiment of the present application;

[0042] Figure 8 A flow schematic diagram of a control method of a dish washing machine provided for an embodiment of the present application;

[0043] Figure 9 A flow schematic diagram of a control method of a dish washing machine provided for an embodiment of the present application;

[0044] Figure 10 A flow schematic diagram of a control method of a dish washing machine provided for an embodiment of the present application;

[0045] Figure 11 A flow schematic diagram of a control method of a dish washing machine provided for an embodiment of the present application;

[0046] Figure 12 A flow schematic diagram of a control method of a dish washing machine provided for an embodiment of the present application;

[0047] Figure 13 A flow schematic diagram of a control method of a dish washing machine provided for an embodiment of the present application;

[0048] Figure 14 A flow schematic diagram of a control method of a dish washing machine provided for an embodiment of the present application;

[0049] Figure 15 A flow schematic diagram of a control method of a dish washing machine provided for an embodiment of the present application;

[0050] Figure 16 A hardware architecture schematic diagram of an electronic device provided for an embodiment of the present application. DETAILED DESCRIPTION

[0051] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the scope of the present application.

[0052] It should be noted that all the direction indications (such as up, down, left, right, front, back, and the like) in the embodiments of the present application are only used to explain the relative position relationship and movement condition between components in a certain posture (as shown in the drawings), and if the certain posture changes, the direction indications also change accordingly.

[0053] The terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0054] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood in a broad sense, for example, it can be fixedly connected, or detachably connected, or integrally connected. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, when describing the pipeline, the "connected" and "connected" used in the present application have the meaning of conducting. The specific meaning needs to be understood in combination with the context.

[0055] In the embodiments of the present application, the words such as "exemplary" or "for example" are used to represent as an example, illustration or description. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words such as "exemplary" or "for example" are intended to present the relevant concept in a specific manner.

[0056] Figure 1 A structure schematic diagram of a dish washing machine provided in the embodiments of the present application is shown in FIG. 1. Figure 1 As shown in FIG. 1, the dish washing machine 100 includes a shell 11, an inner container 12, a spraying arm 13, a shelf 14, a base 15, and a door body (not shown in the figure). Figure 1

[0057] The shell 11 is arranged outside the inner container 12, and is used to protect the inner container 12.

[0058] ​The spray arm 13 is rotatably mounted inside the inner liner 12 and can clean the tableware on the shelf 14 by spraying water. The spray arm 13 is a hollow shell with spray nozzles for spraying water onto the tableware on the shelf 14. Figure 1 (Not shown in the image). It should be understood that the spray arm 13 may include an upper spray arm, a middle spray arm, and a lower spray arm.

[0059] In some embodiments, the spray nozzles on the spray arm 13 are inclined, so that the spray arm can be driven to rotate by the jet of water.

[0060] Shelf 14 is located inside the inner liner 12 and is used to hold tableware such as bowls, plates, or cups. Figure 1 As shown, the shelf 14 may include an upper shelf 141 and a lower shelf 142.

[0061] The base 15 is used to supply water to the spray arm 13, so that the spray arm 13 can clean the tableware on the shelf 14 by spraying water.

[0062] In some embodiments, the base 15 may include a water tank 151, a washing pump 152, a sludge chamber 153, a diversion pump 154, a drain pump 155, a turbidity sensor 156, and a flat filter screen 157.

[0063] The sink 151 is used to hold water, the washing pump 152 is used to drive the water in the sink to the spray arm 13, the sludge chamber 153 is used to filter the water and accumulate dirt, the diversion pump 154 ​​is used to pump water into the sludge chamber, the drain pump 155 is used to discharge the residual water after washing, that is, the water sprayed by the spray arm, which can be discharged from the dishwasher by the drain pump, the turbidity sensor 156 is used to detect the turbidity value of the water, and a flat filter screen 157 is provided at the connection between the sink 151 and the inner tank 12. The water in the inner tank 12 enters the sink 151 after passing through the flat filter screen 157. The flat filter screen 157 can filter out some dirt, for example, the flat filter screen 157 can filter out large vegetable leaves.

[0064] In some embodiments, the sludge chamber 153 includes a sludge storage cavity 1531 and a circulation inlet 1532, a circulation outlet 1533, and a drain outlet communicating with the sludge storage cavity 1531. Figure 1 (Not shown in the image), the circulation outlet 1533 is connected to the water tank 151, and the sludge storage chamber 153 is equipped with a sewage filter screen 1534 located at the circulation outlet 1533.

[0065] The dirt storage cavity 1531 is used for accumulating dirt, the circulation inlet 1532 is an inlet for water entering the dirt storage cavity, the circulation outlet 1533 is an outlet for filtered water in the dirt storage cavity 1531 flowing into the water tank 151, and the sewage filter screen 1534 is used for filtering water in the dirt storage cavity 1531 to accumulate dirt in the dirt storage cavity 1531. The sewage outlet is an outlet for water containing dirt in the dirt storage cavity 1531 to flow out of the outside.

[0066] In some embodiments, the shunt pump 154 can include a first working state and a second working state. When the shunt pump 154 operates in the first working state, water in the water tank 151 can be pumped into the dirt storage cavity 1531 through the circulation inlet 1532, and water in the dirt storage cavity 1531 can be made to enter the water tank 151 through the circulation outlet 1533 and be filtered by the sewage filter screen 1534. When the shunt pump 154 operates in the second working state, the circulation inlet 1532 can be closed.

[0067] In some embodiments, as shown in Figure 2 The dishwasher 100 further includes a first water flow check tongue 15311 located in the dirt storage cavity 1531 and a second water flow check tongue 1511 located in the water tank 151.

[0068] The first water flow check tongue 15311 is rotationally connected to the dirt storage chamber 153 and is arranged at the circulation inlet 1532, and the second water flow check tongue 1511 is rotationally connected to the dirt storage chamber 153 and is arranged at the circulation outlet 1533.

[0069] When the drainage pump 155 is stopped and the shunt pump 154 operates in the first working state, the first water flow check tongue 15311 opens the circulation inlet 1532 under the impact of the water flow output by the shunt pump 154, and the second water flow check tongue 1511 opens the circulation outlet 1533 under the water pressure in the dirt storage cavity 1531. When the drainage pump 155 is in operation and the shunt pump 154 operates in the second working state, a negative pressure is formed at the circulation inlet 1532, the first water flow check tongue 15311 closes the circulation inlet 1532 under the negative pressure at the circulation inlet 1532, and a negative pressure is formed in the dirt storage cavity 1531, the second water flow check tongue 1511 closes the circulation outlet 1533 under the negative pressure in the dirt storage cavity 1531.

[0070] In some embodiments, as shown in Figure 3As shown, the water tank 151 of the dishwasher 100 can include a first cavity 1512 and a second cavity 1513, and a fine filter screen 1514 is arranged inside the water tank 151. The fine filter screen 1514 is connected with the water tank 151 and separates the first cavity 1512 and the second cavity 1513. The first cavity 1512 is in communication with the inner tank 12 and the washing pump 152, and the second cavity 1513 is in communication with the shunt pump 154. The second water flow check tongue 1511 is arranged in the first cavity 1512.

[0071] In some embodiments, as shown, Figure 4 As shown, the base 15 of the dishwasher 100 can further include a water inlet valve 158 and a water level detector 159. The water inlet valve 158 is connected with the inner tank 12, and the water level detector 159 is used to detect the water level of the water in the inner tank 12.

[0072] In some embodiments, the water level detector 159 can be a pressure sensor, which detects the pressure value of the water in the inner tank 12, and determines the water level of the water in the inner tank 12 according to the pressure value of the water in the inner tank 12.

[0073] In some embodiments, the water inlet valve 158 can be controlled to be opened when the water level detector 159 detects that the water level is less than a first water level threshold, and the water inlet valve 158 can be controlled to be closed when the water level detector 159 detects that the water level is greater than or equal to the first water level threshold.

[0074] Although Figures 1 to 4 Although neither of the above embodiments shows, the dishwasher can further include a controller 16 and a memory 17 connected thereto. The controller 16 is the control center of the dishwasher 100, and connects various parts of the dishwasher through various interfaces and lines. The controller 16 executes various washing programs of the dishwasher by running or executing programs stored in the memory 17 and calling data stored in the memory 17. In some embodiments, the controller 16 can include one or more processing units.

[0075] In some embodiments, the controller 16 refers to a device that can generate operation control signals according to instruction operation codes and timing signals, and instruct the washing pump 152 to execute control instructions. Exemplarily, the controller 16 can be a central processing unit (CPU), a general processor network processor (NP), a digital signal processing (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The controller 16 can also be other devices with processing functions, such as circuits, devices or software modules, and the embodiments of the present application do not make any limitation thereto.

[0076] In some embodiments, the memory 17 mainly includes a program storage area and a data storage area. The program storage area can store an operating system and at least one application program required by a function (such as a voice prompt function, an information display function, etc.). The data storage area can store data created during use of the dishwasher 100. In addition, the memory 17 can include a high-speed random access memory and can also include a non-volatile memory such as a magnetic disk storage device, a flash memory device, or other volatile solid-state memory device.

[0077] Figure 5 A hardware configuration block diagram of the dishwasher 100 according to the exemplary embodiments of the present application is shown. As shown in FIG. 1, the dishwasher 100 can further include one or more of the following: a dispenser 18, a display 19, a heater 20, a fan assembly 21, a temperature sensor 22, a voice prompt device 23, and a circulation pump 24. Figure 5

[0078] In some embodiments, the dispenser 18 is connected to the controller 16 and is used to dispense detergent or a brightener into the dishwasher.

[0079] In some embodiments, the display 19 is connected to the controller 16. The display 19 can be a liquid crystal display or an organic light-emitting diode (OLED) display. The specific type, size, and resolution of the display 19 are not limited. The display 19 can be used to display a control panel of the dishwasher. The dishwasher can feed back the current working state of the dishwasher, such as the running time, the washing mode, and the washing stage, etc. through the display 19.

[0080] In some embodiments, the heater 20 is connected to the controller 16 and is used to heat the washing water to improve the washing effect.

[0081] In some embodiments, the fan assembly 21 is connected to the controller 16 and is used to dry the surface of the tableware after the tableware is washed to improve the user experience.

[0082] In some embodiments, the temperature sensor 22 is connected to the controller 16 and is used to detect the temperature value of the water in the sink 151 and send the detected temperature value of the water in the sink 151 to the controller 16.

[0083] In some embodiments, the voice prompt device 23 is connected to the controller 16 and can be used to issue a voice prompt after the tableware is washed. The content of the voice prompt can be pre-set when the dishwasher 100 is shipped or can be customized by the user. For example, the content of the voice prompt can be: “The washing and disinfection of the tableware have been completed”. ​

[0084] In some embodiments, the circulation pump 24 is connected with the controller 16 for driving the water in the sump to the spray arms 13.

[0085] In some embodiments, the circulation pump 24 and the heater 20 jointly constitute a washing pump 152, that is, the washing pump 152 includes the circulation pump 24 and the heater 20.

[0086] It can be understood that the structure shown in the embodiments of the present application does not constitute a specific limitation on the dishwasher. In other embodiments of the present application, the smart pot and the smart stove can include more or fewer components than shown, or combine certain components, or split certain components, or different component arrangements. The components shown can be implemented in hardware, software, or a combination of software and hardware.

[0087] The embodiments provided by the present application will be specifically described below in conjunction with the accompanying drawings of the specification.

[0088] It can be understood that when the user needs to use the dishwasher to wash the tableware, the user can select the washing mode of the dishwasher on the display according to the type of tableware to be cleaned, for example, the type of tableware to be cleaned includes large bowls, small bowls, cups and plates, and then the mixed washing mode can be selected. The controller executes the corresponding washing program according to the user's selected washing mode. As shown in the figure, Figure 6 The washing process 60 of the washing program can include a pre-washing stage 61, a main washing stage 62, a hot rinsing stage 63 and a drying stage 64 which are sequentially run.

[0089] Among them, the pre-washing stage 61 mainly uses the washing pump to spray water through the spray arm to flush the surface of the tableware; the main washing stage 62 mainly uses the heater to heat the water to warm (hot) water, for example, the water can be heated to 40℃, and then the washing pump is used to spray the 40℃ water through the spray arm to wash the tableware, and cleaning agent is added to remove dirt and grease; the hot rinsing stage 63 mainly uses the heater to heat the water to warm (hot) water, for example, the water can be heated to 70℃, and then the washing pump is used to spray the 70℃ water through the spray arm to wash the tableware, achieving the effect of cleaning and disinfection; the drying stage 64 mainly uses the heater and / or the fan assembly to achieve the effect of drying the surface of the tableware.

[0090] In some embodiments, the pre-washing stage 61, the main washing stage 62 and the hot rinsing stage 63 can adopt the mode of multiple water inlets for washing, and the water in each stage of the pre-washing stage 61, the main washing stage 62 and the hot rinsing stage 63 is circulated in the corresponding stage.

[0091] It can be seen that the pre-washing stage 61 and the main washing stage 62 can strip most or even all of the dirt on the tableware, so that the water turbidity value of the pre-washing stage 61 and the main washing stage 62 is increased, so that the pre-washing stage 61 and the main washing stage 62 can be taken as the target stage. That is, the pre-washing stage 61 and the main washing stage 62 can filter the water in the sink through the dirt storage chamber, and discharge the water containing high-concentration dirt, so as to reduce the turbidity value of the water in the sink, and further improve the washing effect of the dishwasher on the tableware.

[0092] In some embodiments, as shown in FIG. 6, the washing process 60 can further include a transition stage 62a, the transition stage 62a is after the main washing stage 62, and the transition stage 62a is before the hot rinsing stage 63. Figure 7

[0093] It can be understood that the dirt on the surface of some tableware is oxidized, dried, etc. due to long-term exposure to air, so that it is difficult to strip from the surface of the tableware. The conventional washing method may not be able to wash such tableware clean. In order to improve the washing effect of the dishwasher on the tableware, a transition stage 62a can be added after the main washing stage 62 and before the hot rinsing stage 63. When the user needs to use the dishwasher to wash such tableware, the user can select a strong washing mode on the display of the dishwasher, and the washing process of the washing program corresponding to the strong washing mode can include the transition stage 62a.

[0094] In the transition stage 62a, the washing pump is mainly used to spray water through the spray arm to wash the surface of the tableware, so that the dirt on the surface of the tableware is stripped.

[0095] In some embodiments, the target stage further includes the transition stage 62a.

[0096] Figure 8 A flowchart of a control method of a dishwasher is provided for the embodiments of the present application. The method is applied to a controller of a dishwasher, and the method includes the following steps:

[0097] S101, performing a water filling action of the dishwasher.

[0098] In some embodiments, when the dishwasher starts to wash the tableware, the water inlet valve can be controlled to be opened, and the water level in the inner container is monitored in real time. When the water level in the inner container is greater than or equal to a first water level threshold, the water inlet valve is controlled to be closed, and the water filling action of the dishwasher is completed.

[0099] S102, controlling the washing pump to act, and pumping the water in the sink into the inner container to wash the tableware.

[0100] In some embodiments, the washing pump is controlled to act, and the water in the sink can be pumped into the inner container and sprayed out through the spray arm to wash the surface of the tableware, so as to achieve the effect of washing the tableware.​

[0101] In some embodiments, the dispenser can be controlled to release the dishwashing powder before the washing pump is controlled to act.

[0102] S103, control the shunt pump to run in a first working state.

[0103] In some embodiments, the control of the shunt pump to run in the first working state can pump the water in the sink into the dirt storage cavity through the circulation inlet, and make the water in the dirt storage cavity enter the sink through the circulation outlet and pass through the sewage filter screen.

[0104] The first working state can be a state of running in a clockwise direction, or a state of running in a counterclockwise direction.

[0105] S104, obtain a turbidity value of the water in the dirt storage cavity.

[0106] In some embodiments, after the dirt on the surface of the tableware is stripped off, it enters the dirt storage cavity with the water flow and accumulates in the dirt storage cavity, and the water in the dirt storage cavity flows into the sink after being filtered by the sewage filter screen. By obtaining the turbidity value of the water in the dirt storage cavity, the concentration of the dirt in the dirt storage cavity can be determined.

[0107] In some embodiments, as shown in Figure 9 The step S104 can be specifically implemented as follows:

[0108] S1041, obtain a target stage of the dishwasher during the washing process.

[0109] The target stage includes a pre-washing stage and a main washing stage.

[0110] In some embodiments, the turbidity value of the water in the dirt storage cavity is only obtained during the execution of the target stage. If the current stage of the dishwasher is a non-target stage, it means that the turbidity value of the water in the dirt storage cavity does not need to be obtained.

[0111] It should be understood that most or even all of the dirt on the surface of the tableware is stripped off at the target stage, and there is no or very little dirt on the surface of the tableware at the non-target stage, which usually does not make the turbidity value of the water in the dirt storage cavity exceed the turbidity threshold.

[0112] S1042, obtain the turbidity value of the water in the dirt storage cavity at the target stage of the washing process of the dishwasher.

[0113] In some embodiments, by obtaining the turbidity value of the water in the dirt storage cavity at the target stage of the washing process of the dishwasher, the concentration of the dirt in the water in the dirt storage cavity can be determined. When the concentration of the dirt in the water in the dirt storage cavity is too high, it will affect the washing effect of the dishwasher on the tableware.

[0114] It should be understood that the turbidity value of the water in the storage chamber is directly proportional to the concentration of pollutants in the water. That is, the higher the turbidity value of the water in the storage chamber, the higher the concentration of pollutants in the water, and vice versa.

[0115] S105. When the turbidity value is greater than or equal to the turbidity threshold, control the washing pump to stop, control the diversion pump to operate in the second working state, and control the drain pump to operate.

[0116] The second working state can be either a clockwise or counterclockwise operating state. If the first working state is a clockwise operating state, the second working state is a counterclockwise operating state. If the first working state is a counterclockwise operating state, the second working state is a clockwise operating state.

[0117] In some embodiments, controlling the washing pump to stop can stop the spray arm from spraying water onto the tableware surface, controlling the diversion pump to operate in the second working state can close the circulation inlet, and controlling the drain pump to operate can close the circulation outlet and discharge the water in the dirt storage chamber to the outside, and the dirt in the dirt storage chamber is also discharged to the outside with the water flow.

[0118] based on Figure 8 The embodiments shown have at least the following beneficial effects: The dishwasher control method provided in this application removes dirt from the surface of the tableware in the target stage. The dirt flows into the dirt storage chamber with the water and accumulates in the dirt storage chamber when the water passes through the sewage filter screen. When the turbidity value of the water in the dirt storage chamber is greater than or equal to the turbidity threshold, the water in the dirt storage chamber is discharged to the outside. The dirt in the dirt storage chamber is also discharged to the outside with the water flow. The water in the dirt storage chamber flows into the water tank for recycling after being filtered by the sewage filter screen. The water filtered by the sewage filter screen has a reduced turbidity value, which can improve the cleaning effect of the dishwasher on the tableware.

[0119] Figure 10 A flowchart illustrating another dishwasher control method provided in this application embodiment, the method being applied to a dishwasher controller, and the method comprising the following steps:

[0120] S201, Obtain water level height.

[0121] It should be understood that it is difficult to clean dishes properly when there is not enough water in the dishwasher. The amount of water in the dishwasher can be determined by measuring the water level in the inner drum.

[0122] The water level in the dishwasher's inner tub is directly proportional to the amount of water in the dishwasher; that is, the higher the water level in the inner tub, the more water the dishwasher contains, and vice versa.

[0123] S202, in a case where the water level height is less than a first water level height threshold, controlling the water inlet valve to open.

[0124] In some embodiments, in a case where it is determined that the water level height is less than the first water level height threshold, it indicates that the water amount in the dishwasher is reduced, which can affect the washing effect of the dishwasher on the tableware, and the water inlet valve can be controlled to open so as to increase the water amount in the dishwasher.

[0125] The first water level height threshold can be pre-set when the dishwasher is shipped.

[0126] S203, in a case where the water level height is greater than or equal to the first water level height threshold, controlling the water inlet valve to close.

[0127] In some embodiments, in a case where it is determined that the water level height is greater than or equal to the first water level height threshold, it indicates that the water amount in the dishwasher is sufficient to wash the tableware clean, and the water inlet valve can be controlled to close to stop the water inlet action of the dishwasher.

[0128] The description of the first water level height threshold can refer to the related description in the above step S202, which will not be repeated here.

[0129] Based on Figure 10 The embodiments of the present application provide a control method of a dishwasher, which monitors the water level height in the inner container of the dishwasher in real time, determines whether the water amount in the dishwasher is sufficient to wash the tableware clean, and executes the water inlet action of the dishwasher in time when the water level height in the inner container of the dishwasher is monitored to decrease, so as to maintain sufficient water amount in the dishwasher and improve the washing effect of the dishwasher on the tableware.

[0130] In some embodiments, as Figure 11 shown in FIG. 6, after step S203, the method can further include the following step:

[0131] S204, after the current target stage is ended, controlling the washing pump and the diversion pump to stop running, and controlling the drainage pump to act.

[0132] In a case where the washing pump and the diversion pump stop running and the drainage pump acts, a negative pressure is formed in the storage cavity, the second water flow check tongue piece closes the circulation outlet under the action of the negative pressure in the storage cavity, and the first water flow check tongue piece opens the circulation inlet under the action of the negative pressure in the storage cavity.

[0133] In some embodiments, the washing pump is controlled to stop running, that is, the dishwasher stops washing the dishes. The second water flow check valve closes the circulation outlet under the negative pressure in the dirt storage chamber, so that the water in the dirt storage chamber will not enter the water tank. The first water flow check valve opens the circulation inlet under the negative pressure in the dirt storage chamber, so that the water in the water tank can enter the dirt storage chamber. The drain pump is controlled to operate to discharge the water in the dirt storage chamber to the outside.

[0134] In some embodiments, steps S201 to S204 may be performed after step S105.

[0135] based on Figure 11 The embodiments shown have at least the following beneficial effects: The dishwasher control method provided in this application discharges the water in the tank to the outside after the current target stage ends, thereby avoiding the water in the current target stage being used for washing in the next stage and causing secondary pollution, which would affect the dishwasher's cleaning effect on the tableware. In other words, discharging the water in the tank to the outside after the current target stage ends can improve the dishwasher's cleaning effect on the tableware.

[0136] The following example illustrates a dishwasher control method provided in this application. Figure 12 This application provides a flowchart illustrating a control method for a dishwasher's powerful washing mode, applicable to the dishwasher's controller, which is a computer board. Figure 12 As shown, the washing process corresponding to the heavy-duty washing mode includes a pre-wash stage, a main wash stage, a transition stage, a hot rinsing stage, and a drying stage.

[0137] S301, Pre-washing stage.

[0138] In some embodiments, the pre-wash stage mainly utilizes a washing pump to spray water through a spray arm to rinse the surface of the tableware, thereby achieving the effect of washing the tableware. Figure 13 As shown, the pre-washing stage can be specifically implemented in the following steps:

[0139] S301-1 Control the drain pump to operate 3 times to discharge residual water in the sludge storage chamber and / or inner tank.

[0140] It is understandable that a drain pump is a centrifugal pump. In daily use, air binding is unavoidable. That is to say, it is unavoidable for air to enter the drain pump. When there is air in the drain pump, because the density of air is much lower than that of the water being pumped, the centrifugal force generated after the drain pump operates is small. Therefore, the low pressure formed in the central area of ​​the impeller of the drain pump is insufficient to draw water into the pump, resulting in residual water in the sludge chamber and / or the inner tank.

[0141] Therefore, before each dishwashing, the computer board can control the drainage pump to act 3 times to drain the residual water in the storage cavity and / or the inner container, that is, the computer board can control the drainage pump to act 3 times to drain the residual water in the storage cavity and / or the inner container in the pre-washing stage, so as to avoid the residual water from being used for washing dishes and reduce secondary pollution.

[0142] S301-2, dispensing pre-washing dishwashing powder.

[0143] In some embodiments, the computer board can control the dispenser to dispense pre-washing dishwashing powder in the pre-washing stage, which helps to strip the dirt on the surface of the dishes when the spray arm sprays water to wash the surface of the dishes, thereby improving the washing effect of the dishwasher on the dishes.

[0144] S301-3, performing water filling action of the dishwasher.

[0145] In some embodiments, the computer board can control the water inlet valve to open to allow the dishwasher to fill with water, and monitor the water level in the dishwasher in real time. When the water level is greater than or equal to a first water level threshold, the computer board controls the water inlet valve to close, thereby completing the water filling action of the dishwasher.

[0146] S301-4, controlling the washing pump to act, and controlling the shunt pump to operate in a first working state.

[0147] It should be understood that the washing pump includes a circulating pump and a heater. In the pre-washing stage, the computer board can control the circulating pump to act to pump the water in the sink into the inner container to drive the spray arm to spray water to wash the surface of the dishes. The water in the pre-washing stage can be cold water, and therefore the heater can not work in the pre-washing stage.

[0148] In some embodiments, the washing pump can also be referred to as a main pump.

[0149] In some embodiments, the computer board controlling the shunt pump to operate in the first working state can pump the water in the sink into the storage cavity through the circulating inlet, and make the water in the storage cavity enter the sink through the circulating outlet and pass through the sewage filter screen, while the dirt filtered out by the sewage filter screen is accumulated in the storage cavity.

[0150] In some embodiments, the dirt can be pollutant particles.

[0151] S301-5, obtaining the turbidity value of the water in the storage cavity.

[0152] In some embodiments, by obtaining the turbidity value of the water in the storage cavity, the concentration of the dirt in the water in the storage cavity can be determined. When the concentration of the dirt in the water in the storage cavity is too high, it will affect the washing effect of the dishwasher on the dishes.

[0153] It should be understood that the turbidity value of the water in the dirt holding cavity is proportional to the concentration of the dirt in the water in the dirt holding cavity, that is, the higher the turbidity value of the water in the dirt holding cavity, the higher the concentration of the dirt in the water in the dirt holding cavity, and vice versa.

[0154] For example, the turbidity value of the water in the dirt holding cavity can be obtained by the turbidity sensor and sent to the computer board.

[0155] S301-6, in the case where the turbidity value is greater than or equal to the turbidity threshold value, the computer board controls the washing pump to stop, controls the shunt pump to operate in the second working state, and controls the drain pump to act.

[0156] In some embodiments, in the case where the turbidity value is greater than or equal to the turbidity threshold value, it indicates that the concentration of the dirt in the dirt holding cavity is too high, which may affect the washing effect of the dishwasher on the tableware. Therefore, the washing can be paused, and the water with too high concentration of dirt can be drained to the outside before washing, for example, the computer board controls the washing pump to stop, so that the spray arm stops spraying water to the surface of the tableware, controls the shunt pump to operate in the second working state, so that the circulation inlet is closed, controls the drain pump to act, so that the circulation outlet is closed, and the water in the dirt holding cavity is drained to the outside, and the dirt in the dirt holding cavity is also drained to the outside with the water flow.

[0157] S301-7, in the case where the turbidity value is less than the turbidity threshold value, the computer board controls the washing pump to act, controls the shunt pump to operate in the first working state, and controls the drain pump to stop.

[0158] For the description of controlling the washing pump to act and controlling the shunt pump to operate in the first working state, refer to the related description in step S301-4 above, which will not be repeated here.

[0159] In some embodiments, the turbidity value of the water in the dirt holding cavity can be monitored in real time, and in the case where the turbidity value is less than the turbidity threshold value, it indicates that the water with too high concentration of dirt has been drained to the outside, and the remaining water in the dishwasher can continue to be used for washing tableware, that is, the dishwasher can continue to wash tableware. Therefore, the computer board can control the washing pump to act, controls the shunt pump to operate in the first working state, and controls the drain pump to stop.

[0160] S301-8, obtaining the water level height.

[0161] For the description of step S301-8, refer to the related description in step S201 above, which will not be repeated here.

[0162] S301-9, in the case where the water level height is less than the first water level height threshold value, the computer board controls the water inlet valve to open.

[0163] For the description of step S301-9, refer to the related description in step S202 above, which will not be repeated here.

[0164] S301-10, in a case where the water level height is greater than or equal to the first water level height threshold, controlling the water inlet valve to be closed.

[0165] The description of step S301-10 can refer to the related description in step S203 described above, which will not be repeated here.

[0166] S301-11, after the pre-washing stage ends, controlling the washing pump and the diversion pump to stop running, and controlling the drain pump to act.

[0167] The description of controlling the washing pump and the diversion pump to stop running, and controlling the drain pump to act can refer to the related description in step S204 described above, which will not be repeated here.

[0168] S301-12, controlling the drain pump to stop.

[0169] In some embodiments, the water level height in the dishwasher can be monitored in real time, and in a case where the water level height is less than or equal to the second water level height threshold, it indicates that the dishwasher drain action has been completed, and the computer board can control the drain pump to stop.

[0170] It can be understood that timely controlling the drain pump to stop after the drain action is completed can avoid the drain pump doing useless work and reduce energy waste.

[0171] S302, main washing stage.

[0172] In some embodiments, as shown in FIG. 3B, step S302 can be specifically implemented as the following steps: Figure 14

[0173] S302-1, performing a water inlet action of the dishwasher.

[0174] The description of step S302-1 can refer to the related description in step S301-3 described above, which will not be repeated here.

[0175] S302-2, controlling the washing pump to act.

[0176] It should be understood that the washing pump includes a circulating pump and a heater, and the computer board can control the heater to work first in the main washing stage, and monitor the temperature value of the water in the sink in real time. In a case where the temperature value of the water in the sink is greater than or equal to the first temperature threshold, the computer board controls the heater to be closed, and controls the circulating pump to act at the same time, pumps the water in the sink into the inner container to drive to the spray arm, so that the spray arm can spray water to flush the surface of the tableware.

[0177] ​The temperature value of the water in the water tank is acquired by the temperature sensor and sent to the computer board. The first temperature threshold value can be pre-set when the dishwasher is manufactured or customized by the user. For example, the first temperature threshold value can be 40°C, 50°C or 60°C.

[0178] S302-3, the dishwashing powder or block is put in.

[0179] In some embodiments, after the washing pump runs for a first preset time, the computer board can control the dispenser to put in the dishwashing powder or block, which helps to peel off the dirt on the surface of the tableware, thereby improving the cleaning effect of the dishwasher on the tableware.

[0180] The first preset time can be pre-set when the dishwasher is manufactured. For example, the first preset time can be 5 minutes, 6 minutes or 7 minutes. The first preset time can be understood as the first heating time, that is, the working time of the heater in step S302-2.

[0181] S302-4, control the shunt pump to run in the first working state.

[0182] The description of controlling the shunt pump to run in the first working state can refer to the related description of step S301-4 above, which will not be repeated here.

[0183] S302-5, acquire the turbidity value of the water in the storage cavity.

[0184] The description of step S302-5 can refer to the related description of step S301-5 above, which will not be repeated here.

[0185] S302-6, in the case where the turbidity value is greater than or equal to the turbidity threshold value, control the washing pump to stop, control the shunt pump to run in the second working state, and control the drain pump to act.

[0186] The description of step S302-6 can refer to the related description of step S301-6 above, which will not be repeated here.

[0187] S302-7, in the case where the turbidity value is less than the turbidity threshold value, control the washing pump to act, control the shunt pump to run in the first working state, and control the drain pump to stop.

[0188] The description of step S302-7 can refer to the related description of step S301-7 above, which will not be repeated here.

[0189] S302-8, acquire the water level.

[0190] The description of step S302-8 can refer to the related description of step S301-8 above, which will not be repeated here.

[0191] S302-9, in the case that the water level height is less than the first water level height threshold, controlling the water inlet valve to open.

[0192] The description about step S302-9 can refer to the related description in step S301-9 as above, which will not be repeated here.

[0193] S302-10, in the case that the water level height is greater than or equal to the first water level height threshold, controlling the water inlet valve to close.

[0194] The description about step S302-10 can refer to the related description in step S301-10 as above, which will not be repeated here.

[0195] S302-11, obtaining the temperature value of the water in the sink.

[0196] It can be understood that after the water is recharged in the washing process, the temperature value of the water in the sink will decrease, and by obtaining the temperature value of the water in the sink, it can be determined whether the temperature value of the water in the sink is greater than or equal to the first temperature threshold.

[0197] S302-12, in the case that it is determined that the temperature value of the water in the sink is less than the first temperature threshold, controlling the heater to work.

[0198] It can be understood that in the case that it is determined that the temperature value of the water in the sink is less than the first temperature threshold, it indicates that the water temperature in the sink is too low, and it is difficult to dissolve and strip stubborn stains on the surface of the tableware, such as lard on the surface of the tableware. The computer board can control the heater to act, so that the temperature value of the water in the sink rises to reach the first temperature threshold.

[0199] S302-13, in the case that it is determined that the temperature value of the water in the sink is greater than or equal to the first temperature threshold, controlling the heater to close, and simultaneously controlling the circulating pump to act.

[0200] The description about controlling the heater to close and simultaneously controlling the circulating pump to act in the case that it is determined that the temperature value of the water in the sink is greater than or equal to the first temperature threshold can refer to the related description in step S302-2 as above, which will not be repeated here.

[0201] S302-14, after the main washing stage ends, controlling the washing pump and the shunt pump to stop running, and controlling the drain pump to act.

[0202] The description about step S302-14 can refer to the related description in step S301-11 as above, which will not be repeated here.

[0203] S302-15, controlling the drain pump to stop.

[0204] The description of step S302-15 can refer to the description of step S301-12 above, and will not be repeated here.

[0205] S303, transition stage.

[0206] In some embodiments, the transition stage is mainly to spray water out of the spray arms by the washing pump to wash the surface of the tableware, so as to achieve the effect of washing the tableware. The description of the transition stage can refer to the description of the pre-washing stage in step S301 above, and will not be repeated here.

[0207] S304, hot rinsing stage.

[0208] In some embodiments, the hot rinsing stage is mainly to heat the water in the sink by the heater, and then spray the water in the sink out of the spray arms by the washing pump to clean the tableware, so as to achieve the effect of cleaning and disinfecting. As shown in FIG. 6, the hot rinsing stage can be implemented as the following steps: Figure 15

[0209] S304-1, performing the water inlet action of the dishwasher.

[0210] The description of step S304-1 can refer to the description of step S302-1 above, and will not be repeated here.

[0211] S304-2, controlling the washing pump action.

[0212] It should be understood that the washing pump includes the circulating pump and the heater. The computer board can control the heater to work first in the main washing stage, and monitor the temperature value of the water in the sink in real time. When the temperature value of the water in the sink is greater than or equal to the second temperature threshold, the computer board controls the heater to be closed, and controls the circulating pump to act, so as to pump the water in the sink into the inner container to drive to the spray arms, so that the spray arms can spray water to wash the surface of the tableware.

[0213] The temperature value of the water in the sink is obtained by the temperature sensor and sent to the computer board. The second temperature threshold can be pre-set when the dishwasher is shipped, or can be customized by the user. For example, the second temperature threshold can be 70°C, 80°C or 90°C.

[0214] S304-3, dispensing the brightener.

[0215] In some embodiments, after the washing pump runs for a second preset time, the computer board can control the dispenser to dispense the brightener, which helps to brighten the gloss of the surface of the tableware, so that the washed tableware looks clean and bright, and helps to improve the user experience.

[0216] ​The second preset time can be set in advance when the dishwasher is manufactured, for example, the second preset time can be 8 minutes, 9 minutes or 10 minutes. The second preset time can be understood as the second heating time, that is, the time when the heater works in step S304-2.

[0217] S304-4, control the shunt pump to run in the first working state.

[0218] The description of step S304-4 can refer to the related description in the above step S302-4, which will not be repeated here.

[0219] S304-5, after the end of the hot rinsing stage, control the washing pump to stop running, control the drain pump to act, and control the shunt pump to keep running in the first working state.

[0220] The description of controlling the washing pump to stop running and controlling the drain pump to act can refer to the related description in the above step S302-14, which will not be repeated here.

[0221] It can be understood that controlling the shunt pump to keep running in the first working state can make the water in the sink flow into the storage cavity and then be discharged to the outside from the storage cavity.

[0222] S304-6, control the drain pump to stop, and control the shunt pump to stop after a third preset time of controlling the drain pump to stop.

[0223] The third preset time can be set in advance when the dishwasher is manufactured, for example, the third preset time can be 1 minute, 2 minutes or 3 minutes. The description of controlling the drain pump to stop can refer to the related description in the above step S302-15, which will not be repeated here.

[0224] It should be understood that the shunt pump is a centrifugal pump, and in daily use, the gas binding effect of the shunt pump is inevitable, which can cause residual water in the inner container. The shunt pump continues to act for a third preset time after the drain pump stops acting, which can transfer the residual water in the inner container to the storage cavity, avoiding the residual water directly contacting the tableware in the inner container, causing secondary pollution.

[0225] The description of the gas binding effect can refer to the related description in the above step S301-1, which will not be repeated here.

[0226] S305, drying stage.

[0227] In some embodiments, the drying stage mainly uses the heater and / or the fan assembly to achieve the effect of drying the surface of the tableware.

[0228] The application also provides an electronic device, such as Figure 16As shown, the electronic device 160 includes one or more processors 1601, and one or more memories 1602, where the one or more memories 1602 are configured to store computer program codes including computer instructions, and the one or more processors 1601 are configured to execute the computer instructions to enable the electronic device 160 to perform the steps of the methods illustrated by the above method embodiments.

[0229] The above merely illustrates the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any change or replacement within the technical scope disclosed by the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A dishwasher, characterized in that The dishwasher comprises: a liner; a water tank in communication with the liner, and a flat filter screen is arranged at the communication position of the water tank and the liner; a washing pump in communication with the water tank and the liner; a sewage storage chamber having a sewage storage cavity, a circulation inlet, a circulation outlet and a sewage outlet in communication with the sewage storage cavity, the circulation outlet being in communication with the water tank, and a sewage filter screen being arranged at the circulation outlet in the sewage storage chamber; a diversion pump in communication with the water tank and the circulation inlet of the sewage storage cavity, the diversion pump comprising a first working state and a second working state; a drainage pump in communication with the sewage outlet and the outside; a turbidity sensor for detecting the turbidity value of the water in the sewage storage cavity; a controller connected with the washing pump, the diversion pump, the drainage pump and the turbidity sensor; a first water flow check tongue rotatably connected with the sewage storage chamber, the first water flow check tongue being arranged in the sewage storage cavity and at the circulation inlet; a second water flow check tongue rotatably connected with the sewage storage chamber, the second water flow check tongue being arranged in the water tank and at the circulation outlet; wherein, when the diversion pump operates in the first working state, the first water flow check tongue is opened by the water flow output by the diversion pump, and the second water flow check tongue is opened by the water pressure in the sewage storage cavity; when the diversion pump operates in the second working state, a negative pressure is formed at the circulation inlet, and the first water flow check tongue is closed by the negative pressure at the circulation inlet; when the drainage pump operates, a negative pressure is formed in the sewage storage cavity, and the second water flow check tongue is closed by the negative pressure in the sewage storage cavity; the controller is configured to: control the washing pump to operate, and pump the water in the water tank into the liner to wash the tableware; obtain the turbidity value of the water in the sewage storage cavity; when the turbidity value is less than a turbidity threshold value, control the diversion pump to operate in the first working state, and pump the water in the water tank into the sewage storage cavity through the circulation inlet, and make the water in the sewage storage cavity enter the water tank through the circulation outlet and the sewage filter screen; when the turbidity value is greater than or equal to the turbidity threshold value, control the washing pump to stop, control the diversion pump to operate in the second working state to close the circulation inlet, control the drainage pump to operate to close the circulation outlet, and discharge the water in the sewage storage cavity to the outside.

2. The dishwasher according to claim 1, characterized in that The water tank comprises a first cavity and a second cavity, and a fine filter screen is arranged in the water tank and separates the first cavity and the second cavity; the first cavity is in communication with the liner and the washing pump, and the second cavity is in communication with the diversion pump, and the second water flow check tongue is arranged in the first cavity.

3. The warewashing machine of claim 1, wherein, The washing process of the dishwasher comprises a pre-washing stage, a main washing stage, a hot rinsing stage and a drying stage which are sequentially operated; the controller is configured to obtain the turbidity value of the water in the sewage storage cavity. acquire a target stage of the dishwasher in a washing process, the target stage comprising the pre-washing stage and the main washing stage; acquire a turbidity value of water in the storage cavity in the target stage of the washing process of the dishwasher.

4. The warewash machine of claim 3 wherein, The washing process of the dishwasher further comprises a transition stage, the transition stage being after the main washing stage, and the transition stage being before the hot rinsing stage; The target stage further comprises the transition stage.

5. The dishwasher according to claim 3 or 4, characterized in that The dishwasher further comprises a water inlet valve and a water level detector connected with the controller, the water inlet valve being connected with the inner container, and the water level detector being used to detect a water level height of water in the inner container; The controller is further configured to: acquire the water level height; control the water inlet valve to open in a case that the water level height is less than a first water level height threshold; control the water inlet valve to close in a case that the water level height is greater than or equal to the first water level height threshold.

6. The dishwasher according to claim 3 or 4, characterized in that The controller is further configured to: control the washing pump and the shunt pump to stop running and control the drain pump to act after the current target stage ends; wherein, in a case that the washing pump and the shunt pump stop running and the drain pump acts, a negative pressure is formed in the storage cavity, the second water flow check valve closes the circulation outlet under the action of the negative pressure in the storage cavity, and the first water flow check valve opens the circulation inlet under the action of the negative pressure in the storage cavity.

7. A control method of a dishwasher, characterized by, The method is applied to the dishwasher in any one of the above claims 1 to 6, and the method comprises: controlling the washing pump to act to pump water in the sink into the inner container to wash dishes; acquiring a turbidity value of water in the storage cavity; controlling the shunt pump to run in a first working state and pump water in the sink into the storage cavity through the circulation inlet and make water in the storage cavity enter the sink through the circulation outlet and pass through the sewage filter screen in a case that the turbidity value is less than a turbidity threshold; controlling the washing pump to stop, controlling the shunt pump to run in a second working state to make the circulation inlet closed, and controlling the drain pump to act to make the circulation outlet closed and discharge water in the storage cavity to the outside in a case that the turbidity value is greater than or equal to the turbidity threshold.

8. The method of claim 7, wherein, The acquiring of the turbidity value of water in the storage cavity comprises: acquiring a target stage of the dishwasher in a washing process, the target stage comprising the pre-washing stage and the main washing stage; acquiring a turbidity value of water in the storage cavity in the target stage of the washing process of the dishwasher.

9. The method of claim 8, wherein, The method further comprises: acquiring a water level height; controlling the water inlet valve to open in a case that the water level height is less than a first water level height threshold; controlling the water inlet valve to close in a case that the water level height is greater than or equal to the first water level height threshold.

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