Cleaning and washing all-in-one machine with self-cleaning function

Abstract

A cleaning and washing all-in-one machine with a self-cleaning function comprises a water purifying path used for generating direct drinking water; the bubble water path is used for generating gas-water mixed micro-nano bubble water; the flushing water path is used for flushing the filter element and the wastewater ratio electromagnetic valve and discharging wastewater; the water purifier is characterized in that the flushing water path comprises a first flushing water path, and the first flushing water path comprises a first electromagnetic valve capable of controlling the bubble water path to be directly communicated with the filter element; and the second flushing water path comprises a second electromagnetic valve capable of controlling the bubble water path to be directly communicated with the waste water ratio electromagnetic valve. The utility model has the advantages that the two independent flushing water paths are arranged in the water path, so that the waste water can be directly contacted with the bubble water with higher concentration generated in the bubble water path compared with the electromagnetic valve, and the cleaning effect and the cleaning efficiency are effectively improved.

Description

Technical Field

[0001] The utility model relates to a cleaning device, in particular to a self-cleaning cleaning integrated machine. Background Art

[0002] At present, general water purifiers are mostly used for drinking, and the drinking water is filtered water at room temperature or heated water. However, with the continuous improvement of living requirements, in addition to drinking water requirements, users usually also hope that water purifiers can be used for washing fruits and vegetables, meat, and rice.

[0003] In daily life, the products used for cleaning function are mainly realized by ultrasonic cleaning, electrolytic bubble cleaning and other methods. Most of these are separate cleaning devices that need to be put into water for use. Combined with the existing water purifier products, the existing water purifiers with cleaning function mainly generate micro-nano bubbles through electrolysis to achieve the cleaning of fruits and vegetables. For example, the water system disclosed in the Chinese utility model "Water System of Water Purifier" with patent number ZL 202121337663.4 includes: a pure water waterway, in which a pre-filter device, a booster pump and a reverse osmosis filtration device are connected in sequence from the raw water inlet to the pure water outlet, a raw water solenoid valve is provided at the raw water inlet, and a pure water control valve is provided at the pure water outlet; a wastewater waterway, including a wastewater main road, which includes a wastewater inlet and a wastewater outlet, and the wastewater inlet is connected to the wastewater outlet of the reverse osmosis filtration device; a first clean waterway, on which a microbubble electrolysis module is connected, and its clean inlet and clean outlet are both connected to the pure water waterway on the water inlet side of the reverse osmosis filtration device; a first clean solenoid valve is provided between the water outlet and the clean outlet of the microbubble electrolysis module. This patent solution is to use electrolysis to produce bubble water, but this implementation method is costly.

[0004] There are also ways to achieve the cleaning function of the water purifier by using an air pump to inject gas to generate micro-nano bubbles, and a venturi tube to inhale gas to generate micro-nano bubbles. For example, the existing Chinese utility model "A water purification system with micro-bubble water" with patent number 202222394681.7 discloses a water purification system with micro-bubble water, which includes a micro-bubble water circuit, and the micro-bubble water circuit includes a mixing tank, an air intake component, a first liquid level gauge and a second liquid level gauge. Although the patent adopts a micro-bubble cleaning method, the patent uses an air pump to generate bubble water, which requires an additional gas mixing chamber the size of a filter element, and the overall equipment is large.

[0005] In addition, the nanofiltration life of current water purifier products relies on pure water flushing to increase the efficiency; the wastewater solenoid valve has no active anti-blocking measures and will inevitably become clogged after long-term use; therefore, in summary, existing water purifier products with cleaning function still need to be further improved and perfected. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a self-cleaning all-in-one cleaning machine which can improve the cleaning efficiency of the filter membrane and effectively prevent the wastewater solenoid valve from being blocked in view of the above-mentioned existing technical status.

[0007] The utility model solves the above technical problems by adopting the following technical solution: a self-cleaning washing machine, which comprises

[0008] Water purification circuit, used to produce direct drinking water;

[0009] A bubble water channel for producing micro-nano bubble water mixed with air and water; and

[0010] Flushing water circuit, used to flush the filter element and wastewater solenoid valve, and discharge the wastewater;

[0011] It is characterized in that: the flushing water circuit includes

[0012] A first flushing water path, wherein the first flushing water path includes a first solenoid valve capable of controlling the bubble water path to be directly connected to the filter element;

[0013] The second flushing water circuit includes a second solenoid valve which can control the bubble water circuit to be directly connected to the waste water solenoid valve.

[0014] The flushing water circuit of the present application adopts the micro-nano bubbles generated by the bubble water circuit to flush the filter element and the solenoid valve. The bubble water can be directly passed into the wastewater solenoid valve. Compared with the cleaning method of first passing through the filter element and then passing into the wastewater solenoid valve in the prior art, it can ensure that when the wastewater solenoid valve needs to be flushed, unbroken micro-nano bubble water is used, which can achieve a better flushing effect.

[0015] In order to ensure the requirements of drinking water, as a preferred method, the water purification circuit includes a first filter element, a second filter element, a third solenoid valve and a pump, wherein the water inlet of the first filter element is connected to tap water, and the water outlet of the first filter element includes a first water outlet and a second water outlet, wherein the first water outlet of the first filter element is connected to the second filter element through the main water circuit connected in series with the third solenoid valve and the pump, and the water filtered by the second filter element returns to the first filter element; the second water outlet of the first filter element produces direct drinking water and is connected to the first water outlet of the washing machine. Therefore, after the circulation and purification of the first filter element and the second filter element, the purified water that can be directly drunk finally flows out from the first water outlet.

[0016] In order to save energy and meet different water use requirements, as a further preferred embodiment, the first filter element includes a primary filter element and a fine filter element, wherein the tap water flows out from the first water outlet of the first filter element after being filtered by the primary filter element, and the water filtered by the second filter element returns to the fine filter element and flows out from the second water outlet of the first filter element after being filtered again. For users with low application requirements, water can be discharged from the second water outlet after only filtering by the primary filter element of the first filter element, without filtering by the second filter element. At this time, the flow rate of the coarse filtered water can be adjusted by the stepless valve element.

[0017] In order to facilitate water flow control, preferably, the first water outlet is also provided with a first valve core which can control the opening and closing of the first water outlet.

[0018] In order to facilitate the detection of the amount of water output, preferably, the first water outlet is also provided with a first Hall sensor capable of detecting the rotation position of the first valve core.

[0019] In order to achieve the production of bubble water, preferably, the bubble water water circuit includes a first filter element, an ejector, a third solenoid valve, a pump, a fourth solenoid valve and a bubbler, wherein the first filter element includes a water inlet and a first water outlet, and the ejector has a water inlet end, an air inlet and a water-gas mixture outlet; the water inlet of the first filter element is connected to tap water, the air inlet of the ejector is used for one-way air intake, and the first water outlet of the first filter element is divided into three paths that can be interconnected, the first path is connected to the water inlet end of the ejector, the second path is connected to the water-gas mixture outlet of the ejector via the third solenoid valve, and the third path is connected to the second water outlet of the cleaning machine after passing through the main water circuit connected in series with the third solenoid valve and the pump, and then through the fourth solenoid valve and the bubbler.

[0020] In order to achieve gas-liquid mixing, preferably, the air inlet of the ejector is also provided with a first one-way valve and a fifth solenoid valve in sequence. The fifth solenoid valve can control the input of external gas, and the first one-way valve can ensure that the gas can only enter the system in one direction and will not flow out in the opposite direction.

[0021] Preferably, a pressure reducing valve is further provided upstream of the water inlet end of the ejector, and the pressure reducing valve is located between the first water outlet of the first filter element and the water inlet end of the ejector. When the water pressure is too high, the efficiency of air suction in the venturi tube is affected, and the pressure reducing valve can reduce the water pressure at the water inlet end of the ejector.

[0022] In order to better mix the inhaled air and water, preferably, a gas mixing chamber is also provided in the bubble water circuit, and the water flowing out of the water-gas mixed liquid outlet of the ejector is passed into the gas mixing chamber after being pumped, and then connected to the bubbler through the fourth solenoid valve.

[0023] In order to achieve flow regulation of bubble water, as a further preference, the first water outlet of the first filter element also includes a fourth route, which is connected to the other three routes of the first water outlet, and the fourth route of the first water outlet is connected to the second water outlet end via a second one-way valve.

[0024] Considering the different water output requirements of bubbles and water, preferably, the second water outlet includes a straight water path and a one-way water path provided with a second valve core arranged in parallel. The straight water path is used to pass the micro-nano bubbles coming out of the bubbler, and the second valve core is used to control the flow rate of the bubble water.

[0025] In order to more accurately control the size of the second water outlet, preferably, the second valve core controls the opening and closing of the second water outlet, and the second water outlet is also provided with a second Hall sensor that can detect the rotation position of the second valve core.

[0026] In order to improve the quality of purified water, preferably, the filter element includes a first filter element arranged at the water inlet end of the washing machine and a second filter element arranged at the wastewater end of the washing machine, the first solenoid valve controls the bubble water circuit to be directly connected to the second filter element, and the wastewater end outlet of the second filter element is connected to the wastewater solenoid valve. The dual setting of the first filter element and the second filter element can ensure the purification effect of water quality and improve the water quality of direct drinking water.

[0027] In order to avoid wasting bubble water and improve the cleaning efficiency of the second filter element, preferably, the first solenoid valve is connected to the bubble water path, and one end of the first solenoid valve is connected to the pump outlet, and the other end is connected to the outlet of the bubble water path. Therefore, the excess bubble water in the bubble water path can directly enter the second filter element to flush the second filter element.

[0028] In order to avoid wasting bubble water and prevent the waste water ratio solenoid valve from being blocked, preferably, the second solenoid valve is connected to the bubble water waterway, and one end of the second solenoid valve is connected to the drain port of the second filter element, and the other end is connected to the water outlet of the bubble water waterway. Therefore, the excess bubble water in the bubble water waterway can directly enter the waste water ratio solenoid valve without passing through the second filter element, thereby achieving effective flushing of the waste water ratio solenoid valve.

[0029] In order to prevent water from flowing out of the wastewater outlet when water is not being produced and avoid waste, preferably, the drain outlet of the second filter element is also provided with a sixth solenoid valve, which is located downstream of the wastewater solenoid valve.

[0030] In order to better control the wastewater ratio, preferably, a flow sensor capable of detecting the wastewater discharge flow rate is further provided downstream of the sixth solenoid valve.

[0031] Compared with the prior art, the advantages of the utility model are: two independent flushing water circuits are set in the water circuit, which can realize independent flushing of the filter element and the wastewater ratio solenoid valve respectively. Compared with the traditional flushing water circuit that first passes through the filter element and then passes through the wastewater ratio solenoid valve, the present application can utilize the micro-nano bubbles in the bubble water circuit, so that the wastewater ratio solenoid valve can directly contact the bubble water with higher concentration generated in the bubble water circuit, effectively improving the cleaning effect and cleaning efficiency, thereby effectively preventing and delaying the clogging of the wastewater ratio solenoid valve and improving the overall service life of the system; the present application can also realize flow regulation of the bubble water circuit, and the implementation method is simple, making the product's use functions more comprehensive and diversified, and enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the water flow direction of the water purification circuit of the all-in-one washing and cleaning machine according to an embodiment of the utility model.

[0033] Figure 2 It is a schematic diagram of the flow direction of the bubble water circuit and the flow regulation of the bubble water circuit of the all-in-one cleaning machine according to an embodiment of the utility model.

[0034] Figure 3 This is one of the schematic diagrams of the flushing water flow direction of the integrated washer and cleaner according to an embodiment of the present utility model.

[0035] Figure 4 This is the second schematic diagram of the flushing water flow direction of the integrated washer and cleaner according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0037] This embodiment relates to a self-cleaning washing machine, which can directly obtain drinking water and can be used for cleaning. Various working water channels of the equipment such as Figures 1 to 4 shown.

[0038] The all-in-one washing machine of this embodiment includes a clean water circuit, a bubble water circuit and a flushing water circuit, wherein the clean water circuit is used to produce direct drinking water after being purified by the first filter element and the second filter element; the first filter element is arranged at the water inlet end of the all-in-one washing machine, and the second filter element is arranged at the wastewater end of the all-in-one washing machine. In order to improve the quality of purified water, more filtering devices can be arranged in the water circuit according to actual needs to improve the purification effect. The dual arrangement of the first filter element and the second filter element can ensure the purification effect of the water quality and improve the water quality of direct drinking water. Of course, more filter elements can be arranged in the water circuit according to actual needs to further improve the water quality.

[0039] like Figure 1As shown, specifically, the water purification circuit includes a first filter element, a second filter element, a third solenoid valve SV3 and a pump, wherein the water inlet of the first filter element is connected to tap water, and the water outlet of the first filter element includes a first water outlet L1 and a second water outlet L2, wherein the first water outlet L1 of the first filter element is connected to the second filter element through the main water circuit connected in series by the third solenoid valve SV3 and the pump, and the water filtered by the second filter element returns to the first filter element; the second water outlet L2 of the first filter element produces direct drinking water and is connected to the first water outlet P1 of the washing machine. Therefore, after the circulation and purification of the first filter element and the second filter element, the purified water that can be directly drunk finally flows out from the first water outlet P1.

[0040] To facilitate water flow control, the first water outlet P1 is also provided with a first valve core V1 (faucet mechanical valve core) that can control the opening and closing of the first water outlet P1. To facilitate the detection of water output, the first water outlet P1 is also provided with a first Hall sensor that can detect the rotation position of the first valve core V1.

[0041] In order to meet the water quality requirements of different water use, the first filter element may include a primary filter element and a fine filter element, wherein the tap water flows out from the first water outlet L1 of the first filter element after being filtered by the primary filter element, flows into the second filter element after passing through the first solenoid valve SV1 and the pump, and the water filtered by the second filter element returns to the fine filter element, and flows out from the second water outlet L2 of the first filter element after being filtered again by the fine filter element in the first filter element to produce direct drinking water, which is connected to the first water outlet P1 of the washing machine, and the user can drink directly by opening the first water outlet P1;

[0042] For users who do not have high requirements for water quality, after filtering by the primary filter element of the first filter element, water can be discharged from the first water outlet L1 of the first filter element through the second one-way solenoid valve and from the second water outlet P2 without filtering by the second filter element. At this time, the water outlet waterway of the second water outlet P2 is provided with a second valve core V2 (faucet mechanical valve core) that can control the opening and closing of the second water outlet P2. The second valve core V2 is a stepless valve core that can adjust the flow rate of the coarse filtered water. The second water outlet P2 is also finally connected to the faucet, and the water outlet is controlled by the faucet mechanical valve core.

[0043] like Figure 2As shown, the bubble water circuit of this embodiment is used to produce micro-nano bubble water mixed with air and water. This embodiment produces micro-nano bubbles through an ejector. The ejector has a Venturi structure. The air is sucked in by the negative pressure generated by the change of the axial diameter of the Venturi tube. At the same time, the water-gas mixture generates a high-speed strong shear force and a high-frequency pressure change when it is ejected from the ejection port, and finally micro-nano bubbles can be generated; the surface of the micro-nano bubble is hydrophobic and negatively charged, and has adsorption capacity for colloidal particles, chemicals, and grease. The micro-nano bubble can generate hydroxyl free radicals without external stimulation. The hydroxyl free radical has a super strong oxidizing effect, so the micro-nano bubble also has a cleaning and disinfection effect. The ejector is a prior art, and the existing product can be selected and directly used in the bubble water circuit of this embodiment.

[0044] In order to achieve effective production of bubble water, the bubble water circuit includes a first filter element, an ejector, a third solenoid valve SV3, a pump, a fourth solenoid valve SV4 and a bubbler, wherein the first filter element includes a water inlet and a first water outlet, the ejector has a water inlet end, an air inlet and a water-gas mixed liquid outlet, the air inlet of the ejector is used for one-way air inhalation, and in order to achieve gas-liquid mixing, the air inlet of the ejector is also sequentially provided with a first one-way valve D1 and a fifth solenoid valve SV5; the fifth solenoid valve SV5 can control the input of external gas, and the first one-way valve D1 can ensure that the gas can only enter the system in one direction and will not flow out in the opposite direction. The bubbler is provided with a microporous structure, and through the change of the flow cross section, a violent collision of the water flow is achieved to form a vortex, which can realize the cutting of bubbles, making the bubbles further smaller, thereby generating micro-nano bubbles; the bubbler and the ejector belong to the prior art, and existing products can be selected for installation and use.

[0045] The water inlet of the first filter element is connected to tap water, and the first water outlet of the first filter element is divided into four paths that can be interconnected (see Figure 1 The four branches ①②③④ shown by the dotted lines in the figure, the first branch ① is connected to the water inlet S1 of the ejector; the second branch ② is connected to the water-gas mixture outlet S2 of the ejector via the third solenoid valve SV3; the third branch ③ is connected to the second water outlet P2 of the cleaning machine via the fourth solenoid valve SV4 and the bubbler after passing through the main water channel connected in series by the third solenoid valve SV3 and the pump; the fourth branch ④ is connected to the other three branches of the first water outlet L1, and the fourth branch of the first water outlet L1 is connected to the second water outlet P2 via the second one-way valve D2, wherein the fourth branch ④ can be used to realize the flow regulation of the bubble water.

[0046] A pressure reducing valve is also provided upstream of the water inlet end of the ejector, and the pressure reducing valve is located between the first water outlet of the first filter element and the water inlet end of the ejector. When the water pressure is too high, the efficiency of air suction in the venturi tube is affected, and the pressure reducing valve can reduce the water pressure at the water inlet end of the ejector.

[0047] In order to better mix the inhaled air and water, a mixing chamber is also provided in the bubble water circuit. The water flowing out of the water-gas mixture outlet of the ejector is passed into the mixing chamber after being pumped, and then connected to the bubbler through the fourth solenoid valve SV4.

[0048] Considering the different water output requirements of bubbles and water, the second water outlet P2 includes a straight waterway and a one-way waterway provided in parallel. The straight waterway is used to pass the micro-nano bubbles coming out of the bubbler, and the second valve core V2 is a stepless valve core. The second valve core V2 can adjust the flow of coarse filtered water and can also be used to control the flow of bubble water.

[0049] In order to more accurately control the size of the second water outlet P2, the second water outlet P2 is further provided with a second Hall sensor capable of detecting the rotation position of the second valve core V2.

[0050] In this embodiment, the first valve core V1 and the second valve core V2 are respectively associated with the faucet handle. The opening and closing of the faucet handle transmits the signal to the water purification host through the corresponding Hall element, and then the main control board of the host controls the opening and closing of each water path.

[0051] After the all-in-one cleaning machine is used for a long time, various ions and dirt in the water will cause the filter element and the solenoid valve to be blocked. In order to avoid blockage and extend the replacement frequency of the equipment, the all-in-one cleaning machine of this embodiment also includes a flushing water circuit for flushing the filter element and the wastewater solenoid valve SVf and discharging the waste water. The flushing water circuit includes a first flushing water circuit and a second flushing water circuit that can work independently of each other.

[0052] like Figure 3 As shown, the first flushing water circuit includes a first solenoid valve SV1 that can control the direct connection between the bubble water circuit and the second filter element, and the waste water outlet of the second filter element is connected to a waste water ratio solenoid valve SVf; because the micro-nano bubble water has a good cleaning and disinfection effect, in order not to waste the bubble water in the water circuit and improve the cleaning efficiency of the second filter element, the first solenoid valve SV1 is connected to the bubble water circuit, and one end of the first solenoid valve SV1 is connected to the pump outlet, and the other end is connected to the outlet of the bubble water circuit. Therefore, the excess bubble water in the bubble water circuit can directly enter the second filter element to achieve flushing of the second filter element.

[0053] like Figure 4As shown, the second flushing water circuit includes a second solenoid valve SV2 that can control the direct connection between the bubble water circuit and the waste water ratio solenoid valve SVf; similarly, in order to make full use of the micro-nano bubble water in the water circuit and prevent the waste water ratio solenoid valve SVf from being blocked, the second solenoid valve SV2 is connected to the bubble water circuit, and one end of the second solenoid valve SV2 is connected to the drain port of the second filter element, and the other end is connected to the water outlet of the bubble water circuit. Therefore, the excess bubble water in the bubble water circuit of this embodiment can directly enter the waste water ratio solenoid valve SVf without passing through the second filter element. The concentration of the bubble water is higher, which can better achieve effective flushing of the waste water ratio solenoid valve SVf and improve the cleaning effect.

[0054] In order to prevent water from flowing out of the wastewater outlet when water is not being produced and avoid waste, the drain outlet of the second filter element is also provided with a sixth solenoid valve SV6, and the sixth solenoid valve SV6 is located downstream of the wastewater ratio solenoid valve SVf; in order to better control the wastewater ratio, a flow sensor Q that can detect the wastewater drainage flow is also provided downstream of the sixth solenoid valve SV6.

[0055] The flushing water circuit of the present application adopts the micro-nano bubbles generated by the bubble water circuit to flush the filter element and the solenoid valve. The bubble water can be directly passed into the wastewater solenoid valve SVf. Compared with the cleaning method of first passing through the filter element and then passing into the wastewater solenoid valve SVf in the prior art, it can ensure that when the wastewater solenoid valve SVf needs to be flushed, unbroken micro-nano bubble water is used, which can achieve a better flushing effect.

[0056] The water flow paths of each working water channel of this embodiment are as follows.

[0057] 1. Water purification route: see Figure 1 In the solid line path with an arrow, at this time, the third solenoid valve SV3 is opened, the first valve core V1 is opened, and the pump is started; at the same time, the second valve core V2 is closed, the first solenoid valve SV1 is closed, the second solenoid valve SV2 is closed, the fourth solenoid valve SV4 is closed, the fifth solenoid valve SV5 is closed, the wastewater ratio solenoid valve SVf is closed, and the sixth solenoid valve SV6 is opened.

[0058] 2. Bubble water circuit: see Figure 2 In the solid line path with arrows, at this time, the fourth solenoid valve SV4 is opened, the fifth solenoid valve SV5 is opened, and the pump is started; at the same time, the first valve core V1 is closed, the second valve core V2 is closed, the first solenoid valve SV1 is closed, the second solenoid valve SV2 is closed, the third solenoid valve SV3 is closed, the wastewater ratio solenoid valve SVf is closed, and the sixth solenoid valve SV6 is closed.

[0059] 3. Bubble water flow adjustment: see Figure 2The dotted line path with an arrow in the middle is used to adjust the flow rate of the bubble water. When the flow rate needs to be increased, the bubble water path remains unchanged, and the opening and closing degree of the first valve core V1 is adjusted to open the bubble water. Figure 2 The dotted path in the figure finally mixes at the tap to obtain sparkling water with increased flow and reduced bubble concentration.

[0060] 4. First flushing water circuit: see Figure 3 In the solid line path with arrows, at this time, the first solenoid valve SV1 is opened, the pump is started, the fourth solenoid valve SV4 is opened, the fifth solenoid valve SV5 is opened, the wastewater ratio solenoid valve SVf is opened, and the sixth solenoid valve SV6 is opened; at the same time, the first valve core V1 is closed, the second valve core V2 is closed, the second solenoid valve SV2 is closed, and the third solenoid valve SV3 is closed.

[0061] 5. Second flushing water circuit: see Figure 4 In the solid line path with an arrow, at this time, the second solenoid valve SV2 is opened, the pump is started, the fourth solenoid valve SV4 is opened, the fifth solenoid valve SV5 is opened, the wastewater ratio solenoid valve SVf is opened, and the sixth solenoid valve SV6 is opened; at the same time, the first valve core V1 is closed, the second valve core V2 is closed, the first solenoid valve SV1 is closed, and the third solenoid valve SV3 is closed.

[0062] In this embodiment, the first flushing water circuit and the second flushing water circuit are separately set. The main reason is that when flushing the second filter element, the micro-nano bubbles will burst when they hit the filter element, taking away the pollutants in the second filter element. However, when flushing the wastewater solenoid valve SVf and the sixth solenoid valve SV6, the micro-nano bubbles have basically burst and have no flushing effect. Therefore, the second solenoid valve SV2 is separately set to ensure that when the wastewater solenoid valve SVf and the sixth solenoid valve SV6 need to be flushed, unbroken micro-nano bubble water is used, and the flushing effect is better.

[0063] This application scheme is based on the Venturi tube structure, combined with the water circuit and control logic, and can achieve the advantages of adjustable bubble water flow, longer nanofiltration membrane life, wastewater solenoid valve is not easy to clog, and small size.

Claims

1. A self-cleaning washing machine, the washing machine comprising Water purification circuit, used to produce direct drinking water; A bubble water channel for producing micro-nano bubble water mixed with air and water; and Flushing water circuit, used to flush the filter element and wastewater solenoid valve (SVf), and discharge the wastewater; Features: The flushing water circuit includes A first flushing water path, the first flushing water path comprising a first solenoid valve (SV1) capable of controlling the bubble water path to be directly connected to the filter element; The second flushing water circuit includes a second solenoid valve (SV2) capable of controlling the direct connection between the bubble water circuit and the waste water solenoid valve (SVf).

2. The self-cleaning washing machine according to claim 1, characterized in that: The water purification waterway includes a first filter element, a second filter element, a third solenoid valve (SV3) and a pump, wherein the water inlet of the first filter element is connected to tap water, and the water outlet of the first filter element includes a first water outlet and a second water outlet, wherein the first water outlet of the first filter element is connected to the second filter element through the main waterway connected in series with the third solenoid valve (SV3) and the pump, and the water filtered by the second filter element is returned to the first filter element; the second water outlet of the first filter element produces direct drinking water and is connected to the first water outlet end (P1) of the cleaning machine.

3. The self-cleaning washing machine according to claim 2, characterized in that: The first filter element includes a primary filter element and a fine filter element, wherein the tap water flows out from the first water outlet of the first filter element after being filtered by the primary filter element, and the water filtered by the second filter element returns to the fine filter element and flows out from the second water outlet of the first filter element after being filtered again.

4. The self-cleaning washing machine according to claim 2, characterized in that: The first water outlet (P1) is also provided with a first valve core (V1) which can control the opening and closing of the first water outlet.

5. The self-cleaning washing machine according to claim 4, characterized in that: The first water outlet (P1) is also provided with a first Hall sensor capable of detecting the rotation position of the first valve core (V1).

6. The self-cleaning washing machine according to claim 1, characterized in that: The bubble water circuit includes a first filter element, an ejector, a third solenoid valve (SV3), a pump, a fourth solenoid valve (SV4) and a bubbler, wherein the first filter element includes a water inlet and a first water outlet, and the ejector has a water inlet end, an air inlet and a water-gas mixture outlet; the water inlet of the first filter element is connected to tap water, the air inlet of the ejector is used for one-way air intake, and the first water outlet of the first filter element is divided into three interconnected paths, the first path is connected to the water inlet end of the ejector, the second path is connected to the water-gas mixture outlet of the ejector via the third solenoid valve (SV3), and the third path is connected to the second water outlet (P2) of the cleaning machine after passing through the fourth solenoid valve (SV4) and the bubbler after passing through the main water path connected in series with the third solenoid valve (SV3) and the pump.

7. The self-cleaning washing machine according to claim 6, characterized in that: The air inlet of the ejector is also provided with a first one-way valve (D1) and a fifth solenoid valve (SV5) in sequence.

8. The self-cleaning washing machine according to claim 6, characterized in that: A pressure reducing valve is also provided upstream of the water inlet end of the ejector, and the pressure reducing valve is located between the first water outlet of the first filter element and the water inlet end of the ejector.

9. The self-cleaning washing machine according to claim 6, characterized in that: The bubble water circuit is also provided with a gas mixing chamber, and the water flowing out of the water-gas mixed liquid outlet of the ejector is passed into the gas mixing chamber after passing through a pump, and then connected to the bubbler through the fourth solenoid valve (SV4).

10. The self-cleaning washing machine according to claim 6, characterized in that: The first water outlet of the first filter element also includes a fourth path, which is connected to the other three paths of the first water outlet. The fourth path of the first water outlet is connected to the second water outlet end (P2) via a second one-way valve (D2).

11. The self-cleaning washing machine according to claim 6, characterized in that: The second water outlet (P2) comprises a straight water channel and a one-way water channel provided with a second valve core (V2) arranged in parallel.

12. The self-cleaning washing machine according to claim 11, characterized in that: The second valve core (V2) controls the opening and closing of the second water outlet end (P2), and the second water outlet end (P2) is also provided with a second Hall sensor capable of detecting the rotation position of the second valve core (V2).

13. The self-cleaning washing machine according to claim 1, characterized in that: The filter element includes a first filter element arranged at the water inlet end of the washing machine and a second filter element arranged at the wastewater end of the washing machine. The first solenoid valve (SV1) controls the bubble water circuit to be directly connected to the second filter element, and the wastewater end outlet of the second filter element is connected to the wastewater ratio solenoid valve (SVf).

14. The self-cleaning washing machine according to claim 13, characterized in that: The first solenoid valve (SV1) is connected to the bubble water channel, and one end of the first solenoid valve (SV1) is connected to the pump outlet, and the other end is connected to the outlet of the bubble water channel.

15. The self-cleaning washing machine according to claim 13, characterized in that: The second solenoid valve (SV2) is connected to the bubble water channel, and one end of the second solenoid valve (SV2) is connected to the drain port of the second filter element, and the other end is connected to the water outlet of the bubble water channel.

16. The self-cleaning washing machine according to claim 13, characterized in that: The drain outlet of the second filter element is also provided with a sixth solenoid valve (SV6), and the sixth solenoid valve (SV6) is located downstream of the wastewater solenoid valve (SVf).

17. The self-cleaning washing machine according to claim 16, characterized in that: A flow sensor (Q) capable of detecting the flow rate of wastewater discharge is also provided downstream of the sixth solenoid valve (SV6).

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