Water supply filtering device, cooking device and control method of water supply filtering device

Abstract

The application provides a water supply filtering device, a cooking device and a control method of the water supply filtering device. The water supply filtering device comprises: a water supply pipe, a first interface and a second interface are arranged on the side wall of the water supply pipe; a filtering device is installed in the water supply pipe and located between the first interface and the second interface; a first control valve is installed on one end of the water supply pipe provided with a water outlet for controlling the opening and closing of the water outlet; a cleaning pump is used for spraying a gas flow and / or a water flow with a certain pressure to the filtering device to flush the filtering device; a sewage pipe is connected with the second interface for discharging sewage after the filtering device is cleaned; and a second control valve is arranged on the sewage pipe for opening or closing the sewage pipe. The embodiment can filter water when water is supplied to the cooking pot to ensure the cleanliness and sanitation of the water, and can use the cleaning pump to flush the filtering device at high pressure and use an external water source to wash the filtering device to ensure the sanitation of the filtering device after long-term use.

Description

Technical Field

[0001] This invention relates to the field of cooking equipment, and more specifically, to a water supply filtration device, cooking equipment, and a control method for the water supply filtration device. Background Technology

[0002] Currently, most cooking appliances on the market, such as rice cookers, electric steamers, and electric pressure cookers with automatic water supply, have a water tank installed outside the rice cooker. This tank is then connected to a tap water pipe to supply water to the tank. The water is then metered and delivered from the tank to the inner pot of the rice cooker, steamer, or pressure cooker. In this method, the tap water is delivered directly to the inner pot without any filtration or purification process. However, due to variations in tap water quality across different regions, coupled with factors such as pipe corrosion and rust, the water in the tap water contains suspended particles, trace amounts of harmful impurities, or some heavy metals. Therefore, long-term direct consumption of tap water can lead to the accumulation of large amounts of harmful substances or heavy metals in the body, which can seriously damage human health.

[0003] Therefore, how to design a water supply filtration device that can filter tap water before supplying it to cooking equipment has become an urgent problem to be solved. Summary of the Invention

[0004] In order to solve at least one of the above-mentioned technical problems, the object of the present invention is to provide a water supply filtration device.

[0005] Another object of the present invention is to provide a cooking apparatus including the above-described water supply and filtration device.

[0006] Another object of the present invention is to provide a control method for a water supply filtration device.

[0007] To achieve the above objectives, the present invention provides a water supply filtration device for cooking equipment. The water supply filtration device includes: a water supply pipe, the outlet of which is connectable to the cooking equipment, and the inlet of which is connectable to an external water source; a first interface and a second interface are provided on the side wall of the water supply pipe; a filter device installed inside the water supply pipe, sealingly contacting the inner side wall of the water supply pipe, wherein the first interface is located on the side of the filter device away from the inlet, and the second interface is located on the side of the filter device closer to the inlet; and a first control valve installed at the end of the water supply pipe where the outlet is located, for controlling... The water supply pipe is connected to the outlet of the water supply pipe; a cleaning pump, connected to the first interface, is used to spray a pressurized airflow and / or a pressurized waterflow onto the filter device through the first interface to flush the filter device; a drain pipe, connected to the second interface, is used to discharge the water used to clean the filter device when the external water source is used to clean the filter device; a second control valve, located on the drain pipe, is used to open or close the drain pipe; a power supply device, connected to the first control valve, the cleaning pump, and the second control valve, is used to supply power to the first control valve, the cleaning pump, and the second control valve.

[0008] The water supply filtration device provided by this invention includes a water supply pipe for connecting an external water source to a cooking appliance, thereby delivering water from the external source to the cooking appliance. The filtration device is installed inside the water supply pipe to filter the water delivered to the cooking appliance. Specifically, different filtration devices can be selected based on the actual water quality of the external source. For example, a filter screen with a larger mesh size can be used to filter suspended particles in the water, or an activated carbon filter can be used to filter microorganisms in the water, or an ion exchange resin filter can be used to filter heavy metals such as Ca2+ and Mg2+. This improves the water quality delivered to the cooking appliance, ensuring the cleanliness and hygiene of the water within the appliance. A first control valve is used to activate the filtration device during normal water supply. The first control valve is open to allow water from an external water source to pass through the filter and be introduced into the cooking equipment. It is closed when the water supply filter is being cleaned to connect the drain pipe to the external water source, allowing wastewater to be discharged directly through the drain pipe after cleaning the filter with external water. This prevents wastewater from flowing through the water supply pipe and soiling it. The cleaning pump is installed on the reverse side of the filter to flush it. The second control valve is closed when the water supply filter is supplying water normally, allowing water from the external water source to pass through the filter and be introduced directly into the cooking equipment without being discharged through the drain pipe. It is also opened when the water supply filter is being cleaned to ensure timely discharge of wastewater.In this embodiment, on the one hand, when the water supply filtration device is supplying water normally, the first control valve can be opened, the second control valve closed, the cleaning pump turned off, and the external water source turned on. This allows water from the external source to be continuously input into the cooking equipment after being filtered by the filtration device. Because the water input into the cooking equipment is filtered, it is relatively clean, thus preventing the deposition of suspended particles, microorganisms, and heavy metal ions in the body, thereby ensuring the user's health. On the other hand, after the water supply filtration device has been used for a long time, the first control valve can be closed, the second control valve opened, the external water source turned off, and the cleaning pump turned on. The pressured airflow and / or pressured waterflow from the cleaning pump is used to flush the side of the filtration device near the outlet, i.e., the back of the filtration device, to wash away dirt and other deposits that have accumulated on the side of the filtration device near the inlet, i.e., the front of the filtration device, due to long-term filtration. At this time, the first control valve is closed to prevent the pressured airflow and / or pressured waterflow from flowing out of the outlet. On the one hand, reducing the flushing efficiency of the filter device, and on the other hand, preventing the external water source from flowing directly into the cooking equipment when washing the filter device, the cleaning pump can be turned off after high-pressure flushing, and the external water source can be turned on to connect to the water supply pipe so that the filter device can be washed with the external water source. After the filter device is cleaned, the water is discharged through the sewage pipe, which connects the external water source to the sewage pipe so that when the external water source flows to the filter device, it can carry away the dirt flushed down by the cleaning pump or directly wash away the dirt on the filter device, thus cleaning the filter device. This prevents dirt from accumulating on the filter device after long-term use. If too much dirt accumulates on the filter device, it will not only fail to filter the water, but will also pollute the water and even block the water supply pipe. Therefore, by setting up a cleaning pump and sewage pipe, the filter device can be cleaned in time to prevent dirt accumulation, thereby improving water quality and ensuring the cleanliness and hygiene of the water supplied to the cooking equipment. The power supply unit is used to supply power to components such as the first control valve, the cleaning pump, and the second control valve.

[0009] Preferably, the water supply filtration device also includes a power supply device for supplying power to components such as the first control valve, the second control valve of the cleaning pump, etc.

[0010] Preferably, the cleaning pump is an air pump, so that it can use an airflow with a certain pressure to clean the filter device.

[0011] In addition, the water supply filtration device in the above embodiments provided by the present invention may also have the following additional technical features:

[0012] In the above embodiments, preferably, the water supply filtration device further includes a one-way valve, installed inside the water supply pipe, located between the water inlet and the filtration device.

[0013] In this embodiment, a check valve is located between the external water source and the filter device, allowing water from the external source to flow only from the inlet through the filter device to the outlet, preventing backflow from the outlet through the filter device. This blocks the water flow in the supply pipe the moment the cleaning pump is turned on, preventing backflow from creating resistance to the cleaning pump and improving its rinsing efficiency. Furthermore, because the cleaning pump has high rinsing efficiency, a lower-power pump can be used to clean the filter effectively for a given cleaning level. Therefore, by using a check valve, a lower-power pump can be selected, reducing the cost of the cleaning pump.

[0014] In the above embodiments, preferably, the water supply filtration device further includes a sewage tank, which is disposed at the outlet of the sewage pipe and is used to collect the sewage discharged from the sewage pipe.

[0015] In this embodiment, a sewage tank can be installed at the outlet of the sewage pipe to collect the sewage after cleaning the filter device, so as to centrally treat the sewage and prevent the sewage from being discharged indiscriminately.

[0016] In the above embodiments, preferably, the filtration device includes one or more of a filter screen, an activated carbon filter, and an ion exchange resin filter.

[0017] In this embodiment, an appropriate filtration device can be selected based on the actual conditions of the external water source. Specifically, for example, if there are many suspended particles and free matter in the water, a filter screen with a larger mesh size can be selected to filter the suspended particles and free matter. If there are many microorganisms in the water, an activated carbon filter can be used to filter the microorganisms. If there are many heavy metal ions such as Ca2+ and Mg2+ in the water, an ion exchange resin filter can be selected to filter the heavy metal ions such as Ca2+ and Mg2+. Preferably, when the water contains two or more of the following: free matter, suspended particles, microorganisms, and heavy metal ions, two or three of the following can be installed simultaneously in the water supply pipe: a filter screen, an activated carbon filter, and an ion exchange resin filter, in order to filter out multiple types of substances in the water and ensure the cleanliness and hygiene of the water.

[0018] Preferably, the filtration device is a sheet filter or a column filter.

[0019] In the above embodiments, preferably, the filtration device is a multi-layer composite filtration device composed of at least two of the filter screen, the activated carbon filter, and the ion exchange resin filter.

[0020] In this embodiment, when the water contains two or more of the following: suspended particles, free matter, microorganisms, and heavy metal ions, corresponding filter screens, activated carbon filters, and ion exchange resin filters can be combined to form a multi-layer composite filtration device. This device filters out multiple types of substances in the water, ensuring its cleanliness and hygiene from multiple perspectives. For example, when the water contains free matter, microorganisms, and heavy metal ions, the filter screen, activated carbon filter, and ion exchange resin filter can be combined to form a three-stage filtration device. Preferably, when the filter screen, activated carbon filter, and ion exchange resin filter are combined to form a multi-layer composite filtration device, the filter screen is preferably located near the inlet to form a primary filtration stage, the activated carbon filter is preferably located in the middle to form a secondary filtration stage, and the ion exchange resin filter is located near the outlet to form a tertiary filtration stage. This allows for graded filtration of the water, resulting in cleaner water.

[0021] In the above embodiments, preferably, the water supply filtration device further includes: a controller connected to the first control valve, the second control valve and the cleaning pump, for controlling the opening and closing of the first control valve and the second control valve, and for controlling the opening and closing of the cleaning pump.

[0022] In this embodiment, the controller can automatically control the opening and closing of the first control valve and the second control valve, as well as the opening and closing of the cleaning pump and the external water source, so as to realize the automatic control of the water supply filtration device, thereby realizing intelligent cleaning of the filtration device and automatic water supply to the cooking equipment.

[0023] In the above embodiments, preferably, the filter device is inclinedly disposed inside the water supply pipe and located at the first interface.

[0024] In this embodiment, the filter device can be installed at an angle at the first interface so that the filter device is directly facing the outlet of the airflow and / or water flow with a certain pressure. This allows the airflow and / or water flow with a certain pressure from the cleaning pump to act directly on the filter device, thereby increasing the scouring force of the cleaning pump on the filter device and improving the working efficiency of the cleaning pump. This relatively reduces the power requirement of the cleaning pump, allowing for the selection of a relatively low-power cleaning pump to scouring the filter device, thus reducing selection costs and lowering the overall cost of the product.

[0025] In the above embodiments, preferably, the cleaning pump is perpendicularly connected to the first interface, the sewage pipe is perpendicularly connected to the second interface, and the first interface and the second interface are arranged opposite to each other.

[0026] In this embodiment, the first and second interfaces can be arranged opposite each other, that is, they can be arranged opposite each other on the upper and lower side walls of the air supply pipe. Since the first and second interfaces are arranged vertically opposite each other, when the filter device is installed at an angle at the first interface, that is, directly opposite the first interface, the filter device can also be installed at the second interface. Therefore, on the one hand, the airflow and / or water flow with a certain pressure of the cleaning pump can directly act on the filter device to improve the working efficiency of the cleaning pump. On the other hand, when the external water source acts directly on the filter device, the dirt on the filter device can be directly flushed into the drain pipe and discharged from the drain pipe without first flushing it into the water supply pipe. This avoids dirt residue in the water supply pipe and ensures the cleaning effect of the product. Conversely, if the second inlet is not directly aligned with the filter, water from the external water source will first pass through the second inlet and exit through the drain pipe. Only when there is a sufficient amount of water for cleaning the filter can the external water source effectively clean it, thus reducing the washing effect. Furthermore, if the second inlet is not directly aligned with the filter, dirt washed off the filter will first enter the water supply pipe instead of being directly flushed into the drain pipe, making it more difficult to remove and resulting in lower cleaning efficiency. Aligning the second inlet directly with the filter effectively avoids these problems and improves the overall cleaning effect of the product.

[0027] In the above embodiments, preferably, the sewage pipe and the water supply pipe are an integrated structure.

[0028] In this embodiment, the sewage pipe and the water supply pipe are preferably an integrated structure because the integrated structure has good mechanical properties, thus ensuring the connection strength between the sewage pipe and the water supply pipe. On the other hand, the sewage pipe and the water supply pipe can be manufactured as a single unit and mass-produced to ensure the production and processing efficiency of the product and reduce the production and processing cost of the product.

[0029] In the above embodiments, preferably, the first control valve and / or the second control valve are both solenoid valves.

[0030] In this embodiment, the first control valve and the second control valve are preferably solenoid valves, because solenoid valves have high control accuracy and can thus achieve precise control of the product.

[0031] A second aspect of the present invention provides a cooking apparatus comprising: a cooking pot body having a pot suitable for holding water and materials; and a water supply filtration device provided in any embodiment of the first aspect, connected to an external water source and the pot, for filtering water from the external water source and supplying it to the pot.

[0032] The cooking apparatus provided according to the embodiments of the present invention has the water supply filtration device provided in any embodiment of the first aspect. Therefore, the cooking apparatus provided according to the embodiments of the present invention has all the beneficial effects of the water supply filtration device provided in any embodiment of the first aspect, which will not be listed one by one here.

[0033] In any of the above embodiments, preferably, the cooking device further includes a water tank connected between the water supply and filtration device and the pot, for storing filtered water and supplying water to the pot.

[0034] In any of the above embodiments, preferably, the cooking vessel is a rice cooker, electric pressure cooker, electric slow cooker, or electric steamer. Of course, the cooking device can also be other structures besides rice cookers and electric rice pots, which will not be listed here.

[0035] An embodiment of the third aspect of the present invention provides a control method for a water supply filtration device, used in any implementation of the water supply filtration device provided in the first aspect, comprising: closing a first control valve and opening a second control valve; turning on a cleaning pump to flush the side of the filtration device away from the inlet using a pressurized airflow and / or a pressurized waterflow from the cleaning pump; after a preset time, turning off the cleaning pump and turning on an external water source to clean the filtration device using the external water source, wherein the water used to clean the filtration device is discharged through a drain pipe.

[0036] The water supply filtration device provided by this invention has two advantages. First, during normal water supply, the first control valve can be opened, the second control valve closed, the cleaning pump shut off, and the external water source opened. This allows water from the external source to be continuously supplied to the cooking equipment after being filtered. Because the water supplied to the cooking equipment is filtered, it is relatively clean, thus preventing the deposition of suspended particles, microorganisms, and heavy metal ions in the body, thereby ensuring the user's health. Second, after long-term use, the first control valve can be closed, the second control valve opened, the external water source shut off, and the cleaning pump opened. The pressurized airflow and / or pressurized waterflow from the cleaning pump flushes the side of the filter device near the outlet (the back of the filter device), removing dirt and other deposits accumulated on the side near the inlet (the front of the filter device) due to long-term filtration. At this time, the first control valve is closed to prevent the pressurized airflow and / or pressurized waterflow from... The outflow of water reduces the rinsing efficiency of the filter. On the other hand, it prevents external water from flowing directly into the cooking equipment when rinsing the filter. After the high-pressure rinsing by the cleaning pump, the pump can be turned off and the external water supply connected to the water supply pipe for rinsing the filter. The water used to clean the filter is then discharged through the wastewater pipe, connecting the external water supply to the drain pipe. This ensures that the water flowing through the external water supply carries away the rinsing fluid from the cleaning pump. The dirt on the filter can be cleaned by rinsing it off directly, thus preventing dirt buildup after long-term use. Too much dirt buildup not only fails to filter the water but also pollutes it and can even clog the water supply pipe. Therefore, by installing a cleaning pump and drain pipe, the filter can be cleaned in a timely manner to prevent dirt buildup, thereby improving water quality and ensuring the cleanliness and hygiene of the water supplied to the cooking equipment.

[0037] In the above embodiments, preferably, the control method of the water supply filtration device further includes: repeatedly performing the steps of turning on the cleaning pump to flush the side of the filtration device away from the water inlet with the airflow and / or water flow with a certain pressure of the cleaning pump, and turning off the cleaning pump and turning on the external water source to clean the filtration device with the external water source N times, where N is an integer greater than or equal to 2.

[0038] In this embodiment, the filter device can be subjected to multiple high-pressure rinsing and external water washing. Through multiple high-pressure rinsing and water washing, the cleaning effect of the filter device can be ensured, thereby ensuring the filtration capacity of the filter device.

[0039] In the above embodiments, preferably, the control method of the water supply filtration device further includes: opening the first control valve and closing the second control valve.

[0040] In this embodiment, after the filter device is cleaned, the first control valve can be opened and the second control valve closed, so that the external water source can directly supply water to the cooking equipment through the water supply filter device. Of course, after cleaning the filter device, if you do not want to supply water directly, you can also directly turn off the external water source.

[0041] Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention. Attached Figure Description

[0042] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0043] Figure 1 This is a schematic diagram of the connection between the water supply filtration device and the external water pipe according to one embodiment of the present invention;

[0044] Figure 2 This is a partial structural schematic diagram of the cooking device according to one embodiment of the present invention;

[0045] Figure 3 This is a schematic diagram of another part of the structure of the cooking device according to one embodiment of the present invention;

[0046] Figure 4 This is a schematic flowchart of the control method of the water supply filtration device according to an embodiment of the present invention.

[0047] in, Figures 1 to 3 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0048] 100 Water supply and filtration device, 1 water supply pipe, 12 water inlet, 14 water outlet, 16 first interface, 18 second interface, 2 filtration device, 3 first control valve, 4 cleaning pump, 5 sewage pipe, 6 second control valve, 7 check valve, 8 sewage tank, 9 controller, 200 external water source, 300 water tank, 400 water pump, 500 water supply pipe, 600 cooking pot body, cookware 610. Detailed Implementation

[0049] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0050] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0051] The following reference Figures 1 to 4 This invention describes a water supply filtration device 100, a cooking appliance, and a control method for the water supply filtration device, provided according to some embodiments of the present invention.

[0052] like Figures 1 to 3 As shown, the present invention provides a water supply filtration device 100 for use in a cooking appliance. The cooking appliance includes a cooking pot body 600. The water supply filtration device 100 includes: a water supply pipe 1, the outlet 14 of which can be connected to the cooking pot body 600, and the inlet 12 of which can be connected to an external water source 200; a first interface 16 and a second interface 18 are provided on the side wall of the water supply pipe 1; a filter device 2, which is installed inside the water supply pipe 1 and is in sealed contact with the inner side wall of the water supply pipe 1, with the first interface 16 located on the side of the filter device 2 away from the inlet 12, and the second interface 18 located on the side of the filter device 2 closer to the inlet 12; and a first control valve 3, which is installed on the water supply pipe 1 and has a... One end of the outlet 14 is used to control the opening and closing of the outlet 14 of the water supply pipe 1; the cleaning pump 4 is connected to the first interface 16 and is used to spray a pressurized airflow and / or a pressurized waterflow into the filter device 2 through the first interface 16 to flush the filter device 2; the drain pipe 5 is connected to the second interface 18 and is used to discharge the water used to clean the filter device 2 when the filter device 2 is cleaned using the external water source 200; the second control valve 6 is installed on the drain pipe 5 and is used to open or close the drain pipe 5; the power supply device is connected to the first control valve 3, the cleaning pump 4 and the second control valve 6 and is used to supply power to the first control valve 3, the cleaning pump 4 and the second control valve 6.

[0053] The water supply filtration device 100 provided by this invention has a water supply pipe 1 for connecting an external water source 200 and a cooking pot body 600 to deliver water from the external water source 200 to the cooking pot body 600. A filtration device 2 is installed inside the water supply pipe 1 to filter the water delivered to the cooking pot body 600. Specifically, different filtration devices 2 can be selected according to the actual water quality of the external water source 200. For example, a filter screen with a larger mesh size can be used to filter suspended particles in the water, or an activated carbon filter can be used to filter microorganisms in the water, or an ion exchange resin filter can be used to filter heavy metals in the water, such as Ca2+ and Mg2+. This improves the water quality delivered to the cooking pot body 600, ensuring the cleanliness and hygiene of the water. A first control valve 3 is used to open when the water supply filtration device 100 is supplying water normally. The water from the external water source 200 is filtered through the filter device 2 and then fed into the cooking pot body 600. The filter device 2 is closed when the water supply filter device 100 cleans the filter device 2, allowing the drain pipe 5 to be connected to the external water source 200. This ensures that after cleaning the filter device 2 with water from the external water source 200, wastewater can be directly discharged through the drain pipe 5, thus preventing wastewater from flowing through the water supply pipe 1 and soiling it. The cleaning pump 4 is installed on the reverse side of the filter device 2 to perform reverse flushing. The second control valve 6 is closed when the water supply filter device 100 is supplying water normally, allowing water from the external water source 200 to be filtered through the filter device 2 and directly fed into the cooking pot body 600 without being discharged through the drain pipe 5. It is opened when the water supply filter device 100 cleans the filter device 2 to ensure timely discharge of wastewater.In this embodiment, on the one hand, when the water supply filtration device 100 is supplying water normally, the first control valve 3 can be opened, the second control valve 6 closed, the cleaning pump 4 turned off, and the external water source 200 opened, so that the water from the external water source 200 can be continuously input into the cooking pot body 600 after being filtered by the filtration device 2, for use in the cooking pot body. Since the water input into the cooking pot body 600 is filtered by the filtration device 2, the water input into the cooking pot body 600 is relatively clean, thus preventing suspended particles, microorganisms, and heavy metal ions from accumulating in the body, thereby ensuring the user's health; on the other hand, After the water supply filter device 100 has been used for a long time, the first control valve 3 can be closed, the second control valve 6 opened, the external water source 200 closed, and the cleaning pump 4 turned on. The pressurized airflow and / or pressurized waterflow from the cleaning pump 4 are used to flush the side of the filter device 2 near the outlet 14, i.e., the back side of the filter device 2, to remove dirt and other deposits accumulated on the side of the filter device 2 near the inlet 12, i.e., the front side of the filter device 2, due to long-term filtration. At this time, the first control valve 3 is closed to prevent the pressurized airflow and / or pressurized waterflow from exiting the outlet 14. 4. The outflow reduces the rinsing efficiency of the filter device 2. On the other hand, it prevents the external water source 200 from directly flowing into the cooking pot body 600 when washing the filter device 2. After high-pressure rinsing by the cleaning pump 4, the cleaning pump 4 can be turned off, and the external water source 200 can be turned on to connect to the water supply pipe 1, so that the filter device 2 can be washed using the external water source 200. The water after washing the filter device 2 is discharged through the sewage pipe, thus connecting the external water source 200 to the drain pipe 5, so that when the external water source 200 flows to the filter device 2, it can... The cleaning pump 4 removes the dirt flushed down by the filter 2, or directly washes away the dirt on the filter 2, thus cleaning the filter 2. This prevents dirt from accumulating on the filter 2 after long-term use. Too much dirt accumulation on the filter 2 not only fails to filter the water but also pollutes it and may even clog the water supply pipe 1. Therefore, by installing the cleaning pump 4 and the drain pipe 5, the filter 2 can be cleaned in a timely manner to prevent dirt accumulation, thereby improving water quality and ensuring the cleanliness and hygiene of the water supplied from the water supply pipe 1 to the cooking pot body 600. The power supply device provides power to components such as the first control valve 3, the cleaning pump 3, and the second control valve 6.

[0054] Preferably, the cleaning pump is an air pump, so that the filter device can be cleaned using an airflow with a certain pressure.

[0055] Of course, the outlet 14 of the water supply pipe 1 in the above embodiment can also be connected to other components of the cooking equipment, such as the water tank.

[0056] In the above embodiments, preferably, as shown below, Figure 1 As shown, the water supply filtration device 100 also includes a one-way valve 7, which is installed in the water supply pipe 1 and located between the water inlet 12 and the filtration device 2.

[0057] In this embodiment, the one-way valve 7 is located between the external water source 200 and the filter device 2, allowing water from the external water source 200 to flow only from the inlet 12 through the filter device 2 to the outlet 14, and preventing backflow from the outlet 14 through the filter device 2. This blocks the water path in the water supply pipe 1 at the moment the cleaning pump 4 is turned on, preventing backflow of water in the water supply pipe 1 from creating resistance to the cleaning pump 4, thereby improving the rinsing efficiency of the cleaning pump 4 on the filter device 2, so that the filter device 2 can be rinsed more thoroughly. In addition, since the cleaning pump 4 has a high rinsing efficiency on the filter device 2, when the degree of cleaning is constant, selecting a cleaning pump 4 with relatively low power can rinse the filter device 2 more thoroughly. Therefore, by setting the one-way valve 7, a cleaning pump 4 with relatively low power can be selected when actually choosing the model of the cleaning pump 4, thereby reducing the cost of the cleaning pump 4.

[0058] In the above embodiments, preferably, as shown below, Figure 1 As shown, the water supply filtration device 100 also includes a sewage tank 8, which is installed at the outlet of the sewage pipe 5 and is used to collect sewage discharged from the sewage pipe 5.

[0059] In this embodiment, a sewage tank 8 can be installed at the outlet of the sewage pipe 5, so that the sewage tank 8 can be used to collect the sewage after cleaning the filter device 2, so as to centrally treat the sewage and prevent the sewage from being discharged at will.

[0060] In the above embodiments, preferably, as shown below, Figure 1 As shown, the filtration device 2 includes one or more of a filter screen, an activated carbon filter, and an ion exchange resin filter.

[0061] In this embodiment, the appropriate filtration device 2 can be selected according to the actual situation of the external water source 200. Specifically, for example, if there are many suspended particles and free matter in the water, a filter screen with a larger mesh size can be selected to filter the suspended particles and free matter in the water. If there are many microorganisms in the water, an activated carbon filter can be used to filter the microorganisms in the water. If there are many heavy metal ions such as Ca2+ and Mg2+ in the water, an ion exchange resin filter can be selected to filter the heavy metal ions such as Ca2+ and Mg2+ in the water. Preferably, when the water contains two or more of the following: free matter, suspended particles, microorganisms, and heavy metal ions, two or three of the following can be installed simultaneously in the water supply pipe 1: a filter screen, an activated carbon filter, and an ion exchange resin filter, so as to filter out multiple types of substances in the water and ensure the cleanliness and hygiene of the water.

[0062] Preferably, such as Figure 1 As shown, filter device 2 is a sheet filter device, but it can also be a column filter device.

[0063] In the above embodiments, preferably, the filtration device 2 is a multi-layer composite filtration device composed of at least two of the following: a filter screen, an activated carbon filter, and an ion exchange resin filter.

[0064] In this embodiment, when the water contains two or more of the following: suspended particles, free matter, microorganisms, and heavy metal ions, corresponding filter screens, activated carbon filters, and ion exchange resin filters can be combined to form a multi-layer composite filtration device. This device filters out multiple types of substances in the water, ensuring its cleanliness and hygiene from multiple perspectives. For example, when the water contains free matter, microorganisms, and heavy metal ions, the filter screen, activated carbon filter, and ion exchange resin filter can be combined to form a three-stage filtration device. Preferably, when the filter screen, activated carbon filter, and ion exchange resin filter are combined to form a multi-layer composite filtration device, the filter screen is preferably positioned near the inlet 12 to form a primary filtration stage, the activated carbon filter is preferably positioned in the middle to form a secondary filtration stage, and the ion exchange resin filter is positioned near the outlet 14 to form a tertiary filtration stage. This allows for graded filtration of the water, resulting in cleaner water.

[0065] In the above embodiments, preferably, as shown below, Figure 1 As shown, the water supply filtration device 100 also includes a controller 9, which is connected to the first control valve 3, the second control valve 6 and the cleaning pump 4, for controlling the opening and closing of the first control valve 3 and the second control valve 6, and for controlling the opening and closing of the cleaning pump 4.

[0066] In this embodiment, the controller 9 can automatically control the opening and closing of the first control valve 3 and the second control valve 6, as well as the opening and closing of the cleaning pump 4 and the external water source 200, so as to realize the automatic control of the water supply filter device 100, so as to realize the intelligent cleaning of the filter device 2 and the automatic water supply to the cooking pot body 600.

[0067] In the above embodiments, preferably, as shown below, Figure 1 As shown, the filter device 2 is installed at an angle inside the water supply pipe 1 and is located at the first interface 16.

[0068] In this embodiment, the filter device 2 can be installed at an angle at the first interface 16 so that the filter device 2 can be directly facing the outlet of the airflow and / or water flow with a certain pressure. This allows the airflow and / or water flow with a certain pressure from the cleaning pump 4 to act directly on the filter device 2, thereby increasing the flushing force of the cleaning pump 4 on the filter device 2. This improves the working efficiency of the cleaning pump 4 and relatively reduces the power requirement of the cleaning pump 4. Consequently, a relatively low-power cleaning pump 4 can be selected to flush the filter device 2, thereby reducing selection costs and lowering the overall cost of the product.

[0069] In the above embodiments, preferably, as shown below, Figure 1 As shown, the cleaning pump 4 is vertically connected to the first interface 16, and the drain pipe 5 is vertically connected to the second interface 18, with the first interface 16 and the second interface 18 arranged opposite to each other.

[0070] In this embodiment, the first interface 16 and the second interface 18 can be arranged opposite each other, that is, they can be arranged opposite each other on the upper and lower side walls of the air supply pipe. Since the first interface 16 and the second interface 18 are arranged vertically opposite each other, when the filter device 2 is installed at an angle to the first interface 16, that is, installed directly opposite the first interface 16, the filter device 2 can also be installed at the second interface 18. Therefore, on the one hand, the airflow and / or water flow with a certain pressure of the cleaning pump 4 can directly act on the filter device 2 to improve the working efficiency of the cleaning pump 4. On the other hand, when the external water source 200 acts directly on the filter device 2, the dirt on the filter device 2 can be directly flushed into the drain pipe 5 and discharged from the drain pipe 5 without first flushing into the water supply pipe 1. This avoids dirt residue in the water supply pipe 1 and ensures the cleaning effect of the product. Conversely, if the second interface 18 is not directly aligned with the filter device 2, water from the external water source 200 will first pass through the second interface 18 and be discharged from the drain pipe 5. Only when there is enough water to clean the filter device 2 can the water from the external water source 200 act on the filter device 2, thus reducing the effect of the external water source 200 on the cooking pot body 600 of the filter device 2. At the same time, if the second interface 18 is not directly aligned with the filter device 2, the dirt washed off the filter device 2 by the external water source 200 will first enter the water supply pipe 1 and cannot be directly flushed into the drain pipe 5, making it more difficult to discharge the dirt washed off the filter device 2, resulting in lower cleaning efficiency. Setting the second interface 18 directly aligned with the filter device 2 can effectively avoid the above problems and improve the overall cleaning effect of the product.

[0071] In the above embodiments, preferably, the sewage pipe 5 and the water supply pipe 1 are an integrated structure.

[0072] In this embodiment, the sewage pipe 5 and the water supply pipe 1 are preferably an integral structure because the integral structure has good mechanical properties, thus ensuring the connection strength between the sewage pipe 5 and the water supply pipe 1. On the other hand, the sewage pipe 5 and the water supply pipe 1 can be manufactured as a single unit and mass-produced to ensure the production and processing efficiency of the product and reduce the production and processing cost of the product.

[0073] In the above embodiments, preferably, as shown below, Figure 1 As shown, the first control valve 3 and / or the second control valve 6 are both solenoid valves.

[0074] In this embodiment, the first control valve 3 and the second control valve 6 are preferably solenoid valves, because solenoid valves have high control accuracy and can thus achieve precise control of the product.

[0075] like Figure 2 and Figure 3 As shown, an embodiment of the second aspect of the present invention provides a cooking device, which includes: a cooking pot body 600 having a pot 610 suitable for holding water and materials; and a water supply filtration device 100 provided in any embodiment of the first aspect, connected to an external water source 200 and the pot, for filtering water from the external water source 200 and supplying it to the pot.

[0076] The cooking apparatus provided according to the embodiments of the present invention has a water supply filtration device 100 provided in any embodiment of the first aspect. Therefore, the cooking apparatus provided according to the embodiments of the present invention has all the beneficial effects of the water supply filtration device 100 provided in any embodiment of the first aspect, which will not be listed one by one here.

[0077] In another embodiment, the cooking apparatus further includes a water tank 300, which is connected between the water supply filter and the cookware, for storing filtered water and supplying water to the cookware 610. According to the embodiments of the present invention, the cooking apparatus first stores an external water source in the water tank and then supplies it to the cooking pot through the water tank, thereby enabling accurate monitoring of the water level in the cooking pot by measuring the decrease in water in the water tank, thus achieving quantitative water supply.

[0078] Preferably, the cooking equipment further includes a water pump 400, the inlet of which is connected to a water tank 300, and the outlet of which is provided with a water inlet pipe 500, which is connected to a pot body 610.

[0079] In any of the above embodiments, preferably, the cooking pot body 600 is a rice cooker, electric pressure cooker, electric slow cooker, or electric steamer. Of course, the cooking device can also be other structures besides rice cookers and electric rice pots, which will not be listed here.

[0080] An embodiment of the third aspect of the present invention provides a control method for a water supply filtration device 2, for use in any implementation of the first aspect of the provided water supply filtration device 2, comprising: step S402, closing the first control valve 3 and opening the second control valve 6; step S404, turning on the cleaning pump 4 to flush the side of the filtration device 2 away from the inlet 12 using the airflow and / or water flow with a certain pressure from the cleaning pump 4; step S406, after a preset time, turning off the cleaning pump 4 and turning on the external water source 200 to clean the filtration device 2 using the external water source 200, wherein the water used to clean the filtration device 2 is discharged through the drain pipe 5.

[0081] The water supply filtration device 2 provided by this invention, on the one hand, allows for the opening of the first control valve 3 and the closing of the second control valve 6 during normal water supply, while shutting off the cleaning pump 4 and opening the external water source 200. This enables water from the external water source 200 to be continuously input into the water tank 300 after being filtered by the filtration device 2, for use in the cooking pot. Because the water input into the water tank 300 is filtered by the filtration device 2, the water is relatively clean, thus preventing the deposition of suspended particles, microorganisms, and heavy metal ions in the body, thereby ensuring the user's health. On the other hand... On the one hand, after the water supply filter device 2 has been used for a long time, the first control valve 3 can be closed, the second control valve 6 can be opened, the external water source 200 can be closed, and the cleaning pump 4 can be turned on. The airflow and / or water flow with a certain pressure of the cleaning pump 4 can be used to flush the side of the filter device 2 near the outlet 14, that is, the back side of the filter device 2, so as to wash away the dirt and other dirt deposited on the side of the filter device 2 near the inlet 12, that is, the front side of the filter device 2, due to long-term filtration. At this time, the first control valve 3 can be closed to prevent the airflow and / or water flow with a certain pressure from flowing out of the filter device 2. The water flowing out of outlet 14 reduces its flushing efficiency on filter device 2. On the other hand, it prevents the external water source 200 from flowing directly into the water tank 300 when washing filter device 2 with water. After high-pressure flushing by cleaning pump 4, cleaning pump 4 can be turned off and external water source 200 can be turned on to connect external water source 200 to the water supply pipe so that filter device 2 can be washed with water using external water source 200. The water after washing filter device 2 is discharged through sewage pipe, which connects external water source 200 to sewage pipe 5 so that external water source 200 can flow to filter device 2. The cleaning pump 4 can remove the dirt flushed down by the cleaning pump 4, or directly wash away the dirt on the filter device 2, thereby cleaning the filter device 2. This prevents dirt from accumulating on the filter device 2 after long-term use. If too much dirt accumulates on the filter device 2, it will not only fail to filter the water, but will also pollute the water and even block the water supply pipe. Therefore, by setting up the cleaning pump 4 and the drain pipe 5, the filter device 2 can be cleaned in time to prevent dirt accumulation, thereby improving water quality and ensuring that the water supplied to the water tank 300 is clean and hygienic.

[0082] In the above embodiments, preferably, the control method of the water supply filtration device 2 further includes: repeatedly performing the steps of turning on the cleaning pump 4 to flush the side of the filtration device 2 away from the water inlet 12 with the airflow and / or water flow with a certain pressure of the cleaning pump 4, and turning off the cleaning pump 4 and turning on the external water source 200 to clean the filtration device 2 with the external water source 200, N times, where N is an integer greater than or equal to 2.

[0083] In this embodiment, the filter device 2 can be subjected to multiple high-pressure rinsing and external water source 200 washing, thereby ensuring the cleaning effect of the filter device 2 and ensuring the filtration capacity of the filter device 2 after multiple high-pressure rinsing and water washing.

[0084] In the above embodiments, preferably, the control method of the water supply filtration device 2 further includes: opening the first control valve 3 and closing the second control valve 6.

[0085] In this embodiment, after the filter device 2 is cleaned, the first control valve 3 can be opened and the second control valve 6 can be closed, so that the external water source 200 can directly supply water to the water tank 300 through the water supply filter device 2. Of course, after cleaning the filter device 2, if you do not want to supply water directly, you can also directly turn off the external water source.

[0086] In this invention, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances.

[0087] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0088] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A water supply filtration device for cooking equipment, characterized in that, The water supply filtration device includes: A water supply pipe, wherein the outlet of the water supply pipe can be connected to a cooking device, the inlet of the water supply pipe can be connected to an external water source, and a first interface and a second interface are provided on the side wall of the water supply pipe. A filter device is installed inside the water supply pipe and is in sealed contact with the inner wall of the water supply pipe. The first interface is located on the side of the filter device away from the water inlet, and the second interface is located on the side of the filter device closer to the water inlet. A first control valve is installed at one end of the water supply pipe where the outlet is located, and is used to control the opening and closing of the outlet of the water supply pipe. A cleaning pump, connected to the first interface, is used to spray a pressurized airflow and / or a pressurized waterflow onto the filter device through the first interface to flush the filter device. A drain pipe, connected to the second interface, is used to discharge the water used to clean the filter device when the external water source is used to clean the filter device; A second control valve is installed on the sewage pipe to open or close the sewage pipe. A power supply unit, connected to the first control valve, the cleaning pump, and the second control valve, is used to supply power to the first control valve, the cleaning pump, and the second control valve. The filter device is installed at an angle inside the water supply pipe and is located at the first interface; The controller is connected to the first control valve, the second control valve, and the cleaning pump, and is used to control the opening and closing of the first control valve and the second control valve, and to control the opening and closing of the cleaning pump, so as to realize intelligent cleaning of the filter device and automatic water supply to the cooking equipment. The cleaning pump is perpendicularly connected to the first interface, and the sewage pipe is perpendicularly connected to the second interface, with the first interface and the second interface being arranged opposite to each other; The water supply filtration device can close the first control valve and open the second control valve; turn on the cleaning pump to flush the side of the filtration device away from the water inlet using the pressurized airflow and / or pressurized water flow of the cleaning pump; after a preset time, turn off the cleaning pump and turn on the external water source to clean the filtration device using the external water source, wherein the water used to clean the filtration device is discharged through the drain pipe.

2. The water supply filtration device according to claim 1, characterized in that, Also includes: A one-way valve is installed inside the water supply pipe, located between the water inlet and the filter device.

3. The water supply filtration device according to claim 1, characterized in that, Also includes: A sewage tank is installed at the outlet of the sewage pipe to collect the sewage discharged from the sewage pipe.

4. The water supply filtration device according to claim 1, characterized in that, The filtration device includes one or more of a filter screen, an activated carbon filter, and an ion exchange resin filter.

5. The water supply filtration device according to claim 4, characterized in that, The filtration device is a multi-layer composite filtration device consisting of at least two of the filter screen, the activated carbon filter, and the ion exchange resin filter.

6. The water supply filtration device according to any one of claims 1 to 5, characterized in that, The sewage pipe and the water supply pipe are an integrated structure; and / or The first control valve and / or the second control valve are both solenoid valves.

7. A cooking device, characterized in that, include: The cooking pot body has a pot suitable for holding water and ingredients; The water supply filtration device as described in any one of claims 1 to 6 is connected to an external water source and the cookware, and is used to filter water from the external water source and deliver it to the cookware.

8. The cooking apparatus according to claim 7, characterized in that, Also includes: A water tank, connected between the water supply and filtration device and the cookware, is used to store the filtered water and supply water to the cookware.

9. The cooking apparatus according to claim 7, characterized in that, The cooking pot body is a rice cooker, electric pressure cooker, electric slow cooker, or electric steamer.

10. A control method for a water supply filtration device, used in any one of claims 1 to 6, characterized in that, include: Close the first control valve and open the second control valve; Turn on the cleaning pump to flush the side of the filter device away from the inlet using the pressurized airflow and / or pressurized water flow from the cleaning pump. After a preset time, the cleaning pump is turned off and the external water source is turned on to clean the filter device. The water used to clean the filter device is then discharged through the drain pipe.

11. The control method for the water supply filtration device according to claim 10, characterized in that, Also includes: The process of repeatedly turning on the cleaning pump to flush the side of the filter device away from the inlet with a pressurized airflow and / or a pressurized water flow, and then turning off the cleaning pump and turning on an external water source to clean the filter device with the external water source is performed N times, where N is an integer greater than or equal to 2.

12. The control method for the water supply filtration device according to claim 10 or 11, characterized in that, Also includes: Open the first control valve and close the second control valve.

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