Automatic putting waterway system based on flow meter water level measurement and washing machine

Abstract

The invention discloses an automatic putting waterway system based on flow meter water level measurement and a washing machine, the automatic putting waterway system based on flow meter water level measurement comprises a putting box, a water storage chamber and a cleaning agent chamber are arranged in the putting box, and two sides of the water storage chamber are respectively communicated with a water inlet pipe and a water outlet pipe; the water inlet valve is arranged at one end of the water inlet pipe; the flow meter is arranged in the water inlet valve to monitor the water inlet flow; one end of the water outlet pipe is communicated with the roller; and the infusion pump is arranged on the putting box, the two ends of the infusion pump communicate with the water storage cavity and the cleaning agent cavity correspondingly, and the infusion pump is used for pumping the cleaning agent into the water storage cavity. According to the washing machine, the flow meter is adopted to directly detect the water inlet flow, the actual water level can be accurately converted in combination with the linear corresponding relation of the fixed volume of the roller, the proportion of the detergent is more accurate by accurately measuring the water level in the roller, and therefore waste of the detergent is avoided, and meanwhile secondary washing caused by the poor washing effect is reduced.

Description

Technical Field

[0001] This invention relates to the field of washing machine technology, and in particular to an automatic water dispensing system and washing machine based on flow meter water level measurement. Background Technology

[0002] Accurate water level detection and precise dispensing of detergent and other liquids in a washing machine are key factors affecting washing performance, energy consumption, and user experience. Traditional washing machines typically supply water to the washing tub through an inlet valve, along with manually added laundry detergent, fabric softener, or other functional liquids. With the increasing demand for intelligent products, more and more washing machines are incorporating automatic dispensing mechanisms to automatically dispense detergent based on factors such as the amount of laundry and the program type.

[0003] However, inaccurate water level detection in the washing tub will directly lead to deviations in water intake, making it difficult to match the amount of detergent with the actual water volume, resulting in problems such as incomplete washing, excessive foam, and detergent residue. In existing technologies, washing machines generally employ pressure-based water level detection solutions, such as mechanical pressure switches, electronic pressure sensors, or air pressure detection pipeline structures. The basic principle is to connect an air pressure conduit to the bottom of the tub and infer the water level by detecting changes in water pressure. However, pressure-based detection structures have the following typical problems: detergent, fiber debris, foam, or sediment from hard water easily accumulate at the bottom of the air conduit, causing pressure transmission sluggishness or distortion, making water level detection unstable; during the washing process, foam generated inside the tub, temperature changes, and liquid fluctuations all cause pressure signal fluctuations, especially under low water level and low flow conditions where the error is more pronounced. Therefore, existing pressure-based water level detection structures are prone to errors when testing water levels, leading to difficulties in matching the detergent dosage with the actual water volume. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this invention is to provide an automatic water dispensing system and washing machine based on flow meter water level measurement, which aims to solve the problem that the test results of the pressure-type water level detection structure in the prior art are prone to errors when testing the water level, resulting in the detergent being difficult to match the actual water volume.

[0005] The technical solution adopted by this invention to solve the technical problem is as follows: In a first aspect, embodiments of the present invention provide an automatic water dispensing system based on flow meter water level measurement, comprising: The dispensing box is equipped with a water storage chamber and a cleaning agent chamber. The water storage chamber is connected to an inlet pipe and an outlet pipe on both sides, respectively. A water inlet valve is located at the end of the water inlet pipe away from the water storage chamber; A flow meter is installed inside the inlet valve to monitor the inlet water flow rate; The water outlet pipe is connected to the roller at the end away from the water storage chamber. A liquid pump is installed on the dispensing box, and its two ends are respectively connected to the water storage chamber and the detergent chamber, for drawing detergent into the water storage chamber.

[0006] As a further improved technical solution, the dispensing box is provided with multiple cleaning agent chambers, and one end of the liquid pump is provided with multiple branch pipes that are connected to each of the cleaning agent chambers in a one-to-one correspondence. The flow meter includes any one of Hall effect flow meter, impeller flow meter, and magnetic flow meter.

[0007] As a further improved technical solution, the water storage chamber is provided with an inlet and an outlet on two opposite sides, the end of the inlet pipe away from the inlet valve is connected to the inlet, and the end of the outlet pipe away from the roller is connected to the outlet.

[0008] As a further improved technical solution, a first recessed groove is provided at one end of the water storage chamber, and the water inlet is located on the side wall of the first groove.

[0009] As a further improved technical solution, a second recessed groove is provided at the other end of the water storage chamber, and the water outlet is located on the side wall of the second groove.

[0010] As a further improved technical solution, the second groove is provided with an arc-shaped surface to guide the water flow into the outlet.

[0011] As a further improvement, the above-mentioned automatic water supply system based on flow meter level measurement also includes: A reversing valve is provided; at least two rollers are provided, and the bottom of the dispensing box is provided with water guide grooves in the same number as the rollers. The reversing valve is provided on the dispensing box. One end of the reversing valve is connected to the water outlet, and the other end is provided with a water guide pipe that is connected to the water inlet end of each water guide groove in a one-to-one correspondence. The number of water outlet pipes is the same as the number of rollers. One end of each water outlet pipe is connected to the water outlet end of each water guide groove in a one-to-one correspondence. The other end of each water outlet pipe is connected to each roller in a one-to-one correspondence.

[0012] As a further improved technical solution, the delivery box includes: The box body, the water storage chamber and the cleaning agent chamber are respectively arranged on the top side of the box body, the water inlet and the water outlet are respectively arranged on the side wall of the box body, and each of the water guide grooves are arranged side by side on the bottom side of the box body; A top cover, wherein the top cover is disposed on the top side of the box body to cover the top side of the box body; A base plate is disposed on the bottom side of the box body to cooperate with each of the water guide grooves to form a water guide chamber.

[0013] As a further improvement, the above-mentioned automatic water supply system based on flow meter level measurement also includes: The drain pipe has a branch pipe at one end that is connected to the bottom of each of the rollers, and a drain pump at the other end. Each of the branch pipes is provided with a drain valve; An air chamber, one end of which is connected to one of the branch pipes and located between the roller and the drain valve corresponding to the branch pipe; or, one end of the air chamber is connected to the bottom side of the inner wall of one of the rollers or to the drain valve corresponding to the roller. A pressure sensor is disposed at the other end of the air chamber to sense changes in air pressure within the air chamber.

[0014] Secondly, embodiments of the present invention also provide a washing machine, which includes an automatic water dispensing system based on flow meter water level measurement as described in any of the above-mentioned embodiments.

[0015] Compared with the prior art, the embodiments of the present invention have the following advantages: This invention provides an automatic water dispensing system based on flow meter water level measurement, comprising: a dispensing box containing a water storage chamber and a detergent chamber, with an inlet pipe and an outlet pipe respectively connected to both sides of the water storage chamber; an inlet valve located at the end of the inlet pipe away from the water storage chamber; a flow meter installed inside the inlet valve to monitor the inlet water flow rate; a drum connected to the end of the outlet pipe away from the water storage chamber; and a pump installed on the dispensing box, with both ends connected to the water storage chamber and the detergent chamber respectively, for drawing detergent into the water storage chamber. In this invention, by directly detecting the inlet water flow rate using a flow meter and combining it with the linear correspondence of the fixed volume of the drum, the actual water level can be accurately calculated. This solves the problem of pressure transmission lag or distortion caused by deposits at the bottom of the air duct, significantly reducing detection errors and maintaining high accuracy even under low water level and low flow conditions. Furthermore, the flow detection directly targets the water flow itself, unaffected by environmental factors such as foam, liquid fluctuations, and temperature changes within the drum, ensuring consistent water level data throughout the entire washing process. Precise measurement of the water level within the drum allows for more accurate detergent mixing, thus preventing detergent waste and reducing the need for secondary washing due to poor washing results. Attached Figure Description

[0016] Figure 1A three-dimensional structural schematic diagram of a first embodiment of an automatic water delivery system based on flow meter water level measurement provided by the present invention; Figure 2 This is a schematic diagram of the connection structure between the dispensing box and the inlet and outlet pipes in this invention. Figure 3 This is a schematic diagram of the first internal structure of the dispensing box in this invention; Figure 4 for Figure 3 Enlarged diagram of A in the middle; Figure 5 This is a schematic diagram of the second internal structure of the dispensing box in this invention; Figure 6 for Figure 5 Enlarged diagram of B in the diagram; Figure 7 This is a schematic diagram of the bottom side structure of the box body in this invention; Figure 8 This is an exploded view of the dispensing box in this invention; Figure 9 This is a first three-dimensional structural schematic diagram of a second embodiment of an automatic water delivery system based on flow meter water level measurement in this invention; Figure 10 This is a second three-dimensional structural diagram of a second embodiment of an automatic water delivery system based on flow meter water level measurement in this invention.

[0017] In the diagram: 1. Dispensing box; 11. Box body; 111. Water storage chamber; 1111. Water inlet; 1112. Water outlet; 1113. First groove; 1114. Second groove; 1115. Arc-shaped surface; 112. Detergent chamber; 1121. Liquid inlet; 113. Water guide groove; 12. Top cover; 121. Liquid extraction channel; 13. Base plate; 2. Water inlet pipe; 3. Water outlet pipe; 4. Water inlet valve; 5. Flow meter; 6. Roller; 7. Liquid extraction pump; 8. Reversing valve; 9. Drain pipe; 901. Branch pipe; 10. Drain pump; 11. Drain valve; 12. Air chamber; 13. Pressure sensor. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] Example 1 Please see Figures 1 to 10The automatic water dispensing system based on flow meter water level measurement includes: a dispensing box 1, which contains a water storage chamber 111 and a detergent chamber 112, with an inlet pipe 2 and an outlet pipe 3 connected to both sides of the water storage chamber 111; an inlet valve 4, located at the end of the inlet pipe 2 away from the water storage chamber 111; a flow meter 5, located inside the inlet valve 4 to monitor the inlet flow rate; a roller 6, with the end of the outlet pipe 3 away from the water storage chamber 111 connected to the roller 6; and a liquid pump 7, located on the dispensing box 1, with both ends connected to the water storage chamber 111 and the detergent chamber 112, for drawing detergent into the water storage chamber 111.

[0020] like Figure 1 and Figure 2 As shown, in this embodiment, the automatic water dispensing system based on flow meter water level measurement includes a dispensing box 1, an inlet valve 4, a flow meter 5, a roller 6, and a pump 7. The dispensing box 1 contains a water storage chamber 111 and a detergent chamber 112, separated by a partition. An inlet pipe 2 and an outlet pipe 3 are connected to both sides of the water storage chamber 111. The inlet valve 4 is located at the end of the inlet pipe 2 furthest from the water storage chamber 111, controlling the opening and closing of the inlet pipe 2. The flow meter 5 is located inside the inlet valve 4 to monitor the inlet flow rate. The outlet pipe 3 is connected to the roller 6 at the end furthest from the water storage chamber 111. The pump 7 is located on the dispensing box 1, with both ends connected to the water storage chamber 111 and the detergent chamber 112, for drawing detergent into the water storage chamber 111. This invention avoids measurement deviations caused by scale buildup in the air duct, air bubble retention, temperature changes, liquid foam, and stains in traditional pressure-type water level switches and electronic pressure sensors. Furthermore, the water level detection method of this invention is based on the physical measurement of water flow, independent of internal pressure fluctuations and water quality changes within the washing machine, allowing for accurate detection of the incoming water volume and significantly improved detection accuracy and long-term stability. The invention's rationally designed water circuit structure not only achieves reliable water level detection but also enables the quantitative dispensing of various liquids such as laundry detergent, fabric softener, and laundry disinfectant, improving the automation level of the equipment. The integrated water circuit structure of this invention reduces the long air ducts, complex branches, and unnecessary water circuit bends in traditional water level detection systems, thereby reducing the risks of scale buildup, blockages, water accumulation, and air retention. As a core detection component in a clean water circuit, the flow meter 5 is less susceptible to contamination, resulting in improved long-term operational reliability, reduced maintenance frequency, and ultimately, a longer equipment lifespan.

[0021] Meanwhile, the automatic water delivery system based on flow meter water level measurement includes the following steps: The first step is to use the flow meter 5 to detect the real-time flow rate of the incoming water and output the corresponding pulse signal to the controller (not shown) of the washing machine; Specifically, after the washing machine starts the preset washing program, the water inlet valve 4 opens, and tap water is supplied directionally to the water storage chamber 111 of the dispenser 1 through the water inlet pipe 2. Simultaneously, the flow meter 5 integrated within the water inlet valve 4 starts working, detecting the instantaneous flow rate of the incoming water in real time and converting the flow data into corresponding electrical pulse signals, which are continuously and stably transmitted to the washing machine's controller. The pulse signal output frequency of the flow meter 5 has a linear relationship with the incoming water flow rate, accurately reflecting the incoming water velocity at every moment, providing original and accurate data for subsequent water volume accumulation and water level calculation.

[0022] The second step is for the controller to perform cumulative calculations on the pulse signals to obtain the amount of water entering the washing machine drum 6. Specifically, after receiving the pulse signal transmitted by the flow meter, the controller calls a preset flow conversion algorithm to accumulate and convert the pulse signal in real time, converting the number of pulses into the actual volume of water entering the water storage chamber 111, thus completing the accurate measurement of the water intake. This calculation process is unmanned and unaffected by external factors such as foam, temperature, and liquid fluctuations inside the drum. Compared with the indirect calculation method of traditional pressure detection, the water intake calculation result is more real-time and accurate, and can accurately reflect the actual amount of water entering the water system.

[0023] The third step is for the controller to calculate the real-time water level of the drum 6 based on the preset washing machine drum volume model and the water inlet volume of the drum 6. Specifically, the controller has a built-in drum volume model that matches the washing machine drum. This model pre-stores the volume parameters of the drum's internal cavity, the correspondence between water level and water intake. The controller substitutes the actual water intake calculated in the second step into the volume model, and quickly derives the real-time water level inside the drum using existing algorithms. The water level data is then updated to the controller in real time, forming a visualized water level monitoring result. This provides a core basis for subsequent detergent dosing and water intake start / stop control. For scenarios with multiple drums, the controller can retrieve the volume models corresponding to drums of different sizes and simultaneously perform independent real-time water level calculations for each drum, adapting to the differentiated water level monitoring needs of multiple drums.

[0024] Fourth step: According to the requirements of the washing program, the controller controls the liquid pump 7 to draw the target amount of liquid cleaning agent into the water storage chamber 111. The liquid cleaning agent drawn into the water storage chamber 111 includes any one or more of the existing liquid cleaning agents such as detergent, fabric softener, and disinfectant. Specifically, based on the user-selected washing program (such as intensive cotton and linen wash, gentle wool wash, antibacterial wash, quick wash, etc.), the controller automatically retrieves the corresponding detergent mixing parameter library to determine the type of liquid detergent required for this wash (either detergent, fabric softener, disinfectant, color protectant, etc. can be selected individually, or multiple types can be selected in combination). Combined with the real-time water level of the drum calculated in the third step, the controller accurately calculates the target dosage for each type of detergent. For scenarios involving multiple detergents, the controller can determine the individual dosage for each detergent; for time-segmented dosage scenarios, it can simultaneously plan the detergent dosage sequence for different cleaning stages, ensuring precise matching of detergent type, dosage, washing program, and water level requirements.

[0025] Fifth step: The controller dynamically adjusts the opening and closing status of the inlet valve 4 and the liquid pump 7 according to the water level detection results and the liquid cleaning agent dosing progress. Water is supplied to the inlet pipe 2 and the water storage chamber 111 through the inlet valve 4. During the water supply process, the liquid pump 7 completes the quantitative addition of liquid cleaning agent. When the liquid pump 7 draws out the corresponding amount of liquid cleaning agent, it stops running. Specifically, based on the water level detection results and the detergent dispensing progress, the controller dynamically outputs control commands to achieve coordinated operation of water supply from the inlet valve 4 and detergent extraction from the pump 7: the inlet valve 4 remains open, continuously supplying water to the water storage chamber 111 to form a stable water flow channel; the pump 7 starts synchronously, accurately extracting the target amount of liquid detergent into the water storage chamber 111 through the branch pipes corresponding to each detergent chamber 112. During the filling process, the inlets 1111 and outlets 1112 on both opposite sides of the water storage chamber 111 form a convective water flow. Combined with the buffering and guiding effect of the first groove 1113 and the converging and guiding effect of the second groove 1114, the cleaning agent and clean water are quickly and evenly mixed in the water storage chamber 111, avoiding uneven concentration caused by local accumulation of cleaning agent. When the cleaning agent drawn by the pump 7 reaches the target amount determined in the fourth step, the controller immediately issues a stop command, the pump 7 stops running, and the quantitative filling of cleaning agent is completed, achieving precise control of the amount of cleaning agent added throughout the process.

[0026] Step 6: When the water inlet volume monitored in real time by the flow meter 5 reaches the preset target water level of the drum 6, the water inlet valve 4 is closed and the water inlet pipe 2 stops water inlet. At this time, the water and liquid cleaning agent in the drum 6 are completely added.

[0027] Specifically, the flow meter 5 continuously monitors the inlet water flow. When the real-time calculated inlet water volume reaches the target water level of the drum preset by the controller, the controller immediately sends a closing command to the inlet valve 4. The inlet valve 4 stops working, and the inlet pipe stops supplying water to the storage chamber 111. At this time, the clean water and detergent have been uniformly mixed in the storage chamber 111. The mixture flows into the drum through the guide channel 113 and the outlet pipe 3. The water volume and detergent dosage in the drum both reach the preset standards, and the water inlet and detergent dosage process is completed in a closed loop. For multi-drum scenarios, the controller can precisely switch the water flow channel through the reversing valve 8 to deliver the mixture to the target drum, and perform independent water inlet start and stop control according to the target water level of each drum, realizing differentiated and precise dosing for multiple drums.

[0028] This invention achieves dynamic and precise matching between the detergent dosage and the actual water level in the drum 6 through a linkage mechanism involving the flow meter 5, controller, and pump 7. The flow meter 5 includes, but is not limited to, existing Hall effect, impeller, magnetic, and other flow meter structures with pulse output. Specifically, the real-time water flow data collected by the flow meter 5 can be synchronously fed back to the washing machine controller. The controller calls a preset algorithm for the drum 6 water level and detergent ratio, and drives the pump 7 to precisely control the amount of detergent extracted from the detergent chamber 112 to the water storage chamber 111 according to the optimal ratio parameters corresponding to different washing programs (such as cotton, linen, wool, and quick wash) and different loads, ensuring that the detergent concentration is always within the optimal range. This invention, by using the flow meter 5 to directly detect the water flow and combining it with the linear correspondence of the fixed volume of the drum 6, can accurately calculate the actual water level, solving the problem of pressure transmission lag or distortion caused by the accumulation of material at the bottom of the air duct. This significantly reduces detection errors and maintains high accuracy even under low water level and low flow conditions. Furthermore, the flow detection directly targets the water flow itself, unaffected by environmental factors such as foam, liquid fluctuations, and temperature changes within the drum 6, ensuring consistent water level data throughout the entire washing process. Precise measurement of the water level within the drum 6 allows for more accurate detergent mixing, thus preventing detergent waste and reducing the need for secondary washing due to poor washing results.

[0029] Furthermore, the dispensing box 1 is provided with multiple detergent chambers 112, and one end of the pump 7 is provided with multiple branch pipes that are connected to each detergent chamber 112 in a one-to-one correspondence. Specifically, the multiple detergent chambers 112 can dispense detergent individually or in combination to achieve quantitative, mixed, or timed dispensing of various liquid detergents. The multiple detergent chambers 112 can be filled with different types of detergents, including but not limited to laundry detergent, fabric softener, antibacterial liquid, color protectant, etc. The controller can drive the pump 7 to dispense detergent individually, in combination, or at timed dispensing through the corresponding branch pipes according to the washing needs: individual dispensing can meet a single cleaning need, such as only antibacterial; combined dispensing can achieve multi-functional synergy, such as simultaneous dispensing of laundry detergent and antibacterial liquid, taking into account both cleaning and antibacterial; timed dispensing can match the needs of different stages of the washing process, such as dispensing laundry detergent at the beginning of washing and fabric softener at the rinsing stage, avoiding the reduction of efficacy caused by premature mixing of different types of detergents. This further expands the functional coverage of washing machines, making them adaptable to diverse washing scenarios with different fabrics, different types of stains, and different care needs, thereby enhancing the product's applicability and market competitiveness.

[0030] like Figure 3 and Figure 5 As shown, in this embodiment, the water storage chamber 111 has an inlet 1111 and an outlet 1112 on two opposite sides. The end of the inlet pipe 2 away from the inlet valve 4 is connected to the inlet 1111, and the end of the outlet pipe 3 away from the drum 6 is connected to the outlet 1112. Specifically, this structural design allows the incoming water to form a smooth convection channel within the water storage chamber 111. On the one hand, it avoids direct impact of the incoming water on local areas of the chamber, preventing water flow turbulence and ensuring stable water flow, thus providing favorable conditions for accurate detection by the flow meter 5. On the other hand, when the pump 7 draws the detergent into the water storage chamber 111, the convection water flow can quickly and evenly mix the detergent, preventing local accumulation of detergent and uneven concentration. This ensures that the mixed solution can fully contact the clothes after entering the drum 6, further improving the washing effect. In addition, the smooth water flow channel can also reduce the adhesion of scale and detergent residue, reducing the difficulty of cleaning the chamber. like Figure 4As shown, further, a downwardly recessed first groove 1113 is provided at one end of the water storage chamber 111, and the water inlet 1111 is located on the side wall of the first groove 1113. Specifically, this embodiment further optimizes the water flow characteristics and reliability of the water storage chamber 111. On the one hand, the first groove 1113 forms a water inlet buffer area. When water flows into the water storage chamber 111 from the water inlet 1111, the first groove 1113 can effectively receive the water flow, preventing the water flow from directly impacting the bottom or side wall of the water storage chamber 111 and causing splashing or eddies, further improving the stability of the water flow and ensuring that the water flow rate data detected by the flow meter 5 is more accurate. On the other hand, the recessed structure of the first groove 1113 can guide the water flow to diffuse smoothly into the interior of the water storage chamber 111. Combined with the convection design of the inlet and outlet water on two opposite sides, it can further enhance the mixing effect of the detergent and clean water, making the mixing more uniform and faster. Meanwhile, after washing, the small amount of residual liquid or detergent in the water storage chamber 111 is easily collected in the first groove 1113 under gravity and completely discharged during subsequent water intake or drainage processes, which greatly reduces the amount of residual liquid adhering in the chamber, reduces the risk of scale and detergent residue accumulation, and further reduces the cleaning and maintenance burden. In addition, the water inlet 1111 is located on the side wall of the first groove 1113, which can prevent the water inlet 1111 from being directly exposed in the main channel of the water storage chamber 111, reduce the wear of the water flow impact on the connection of the water inlet 1111, improve the sealing and service life of the pipeline connection, and thus enhance the operational reliability of the entire water system.

[0031] like Figure 6As shown, further, the other end of the water storage chamber 111 is provided with a downwardly recessed second groove 1114, and the water outlet 1112 is disposed on the side wall of the second groove 1114. Specifically, the other end of the water storage chamber 111 is provided with a downwardly recessed second groove 1114, and the water outlet 1112 is opened on the side wall of the second groove 1114, forming a symmetrical optimized structure with double grooves at both ends, which further enhances the overall performance of the water system. On the one hand, the second groove 1114 and the first groove 1113 form a symmetrical water flow guiding structure. Combined with the water inlet and outlet layout on both sides, the water flow in the water storage chamber 111 can form a more stable and orderly convection circulation, avoiding dead corners in the water flow inside the water storage chamber 111. This ensures that the detergent and clean water in all parts of the chamber can be fully mixed, completely solving the problem of uneven local concentration and further improving the uniformity of the mixed solution concentration. On the other hand, the second groove 1114, as the confluence area of ​​the water outlet, can guide the mixed solution in the water storage chamber 111 to the water outlet 1112 for precise flow, improving water output efficiency and avoiding water output lag caused by water flow dispersion. At the same time, after washing, the mixed solution remaining in the chamber will be collected in the first groove 1113 and the second groove 1114 under the action of gravity. The confluence effect of the two grooves can make the residual liquid more thoroughly discharged. Compared with the single groove design, it greatly reduces the risk of scale and detergent residue accumulation and further reduces the difficulty of maintenance and cleaning. In addition, the outlet 1112 is located on the side wall of the second groove 1114, which can also prevent the outlet 1112 from being directly exposed to the impact of the main water flow, reduce the wear of the water flow on the connection part of the outlet 1112, and, together with the groove protection design of the inlet 1111, improve the sealing performance and service life of the entire pipeline connection, further enhancing the stability and reliability of the system operation.

[0032] Meanwhile, the second groove 1114 is provided with an arc-shaped surface 1115 to guide the water flow into the outlet 1112. Specifically, the arc-shaped surface 1115 has a smooth transition guiding characteristic. Compared with a flat or angular structure, it can significantly reduce the flow resistance of water in the second groove 1114, guiding the mixed liquid in the water storage chamber 111 smoothly and quickly into the outlet 1112 along the arc-shaped surface 1115. This avoids water from generating eddies or stagnating in the second groove 1114, further improving water output efficiency. At the same time, it reduces the noise generated by water flow impact, improving the quietness of product operation. On the other hand, the arc-shaped surface 1115 has no sharp edges, which can prevent detergent residue and scale from accumulating at the edges of the groove. Combined with the smooth structure of the arc-shaped surface 1115, the water flow can more thoroughly flush the inner wall of the groove, further reducing residue adhesion and reducing the difficulty of cleaning and maintenance. In addition, the smooth arc-shaped surface 1115 can also reduce the impact wear of water flow on the inner wall of the groove and the area around the outlet 1112, extending the service life of the water storage chamber 111 and further enhancing the operational reliability of the water system.

[0033] like Figure 7 As shown, in this embodiment, the automatic water dispensing system based on flow meter water level measurement also includes a reversing valve 8. The reversing valve 8 is an existing valve body that can allow multiple water guide channels 113 to enter water individually, such as an existing three-way switching valve. There are at least two rollers 6. The bottom of the dispensing box 1 is provided with water guide channels 113 in the same number as the rollers 6. The reversing valve 8 is set on the dispensing box 1. One end of the reversing valve 8 is connected to the water outlet 1112, and the other end is provided with a water guide pipe that is connected to the water inlet end of each water guide channel 113. The number of water outlet pipes 3 is the same as the rollers 6. One end of each water outlet pipe 3 is connected to the water outlet end of each water guide channel 113 in a corresponding manner, and the other end of each water outlet pipe 3 is connected to each roller 6. Specifically, this embodiment achieves precise adaptation between a single dispensing water system and multiple drums 6 by adding a reversing valve 8, setting water guide grooves 113 at the bottom of the dispensing box 1 in the same number as the drums 6, and configuring a corresponding number of water guide pipes and outlet pipes 3. The reversing valve 8 can precisely switch the water flow channel according to washing needs. By controlling the opening and closing of the water guide pipes connected to the water inlet of each water guide groove 113, the mixed liquid is directionally delivered to different drums 6, enabling a single automatic dispensing system to provide precise water level control and detergent dispensing services to multiple drums 6 simultaneously. This eliminates the need to configure a separate dispensing system for each drum 6, greatly simplifying the equipment structure and reducing production and assembly costs. Furthermore, the water guide grooves 113 can buffer and guide the mixed liquid flowing to each drum 6, working in conjunction with the first groove 1113 and the second groove 1114. The arc-shaped 1115 flow guide design ensures that the mixed liquid can enter each drum 6 smoothly and evenly, even when switching water flow channels, avoiding concentration fluctuations or water level deviations caused by water flow switching, and guaranteeing consistent washing results when multiple drums 6 are running. Simultaneously, this structure supports independent or collaborative operation of multiple drums 6, allowing users to simultaneously perform different washing programs according to clothing type, washing priority, and other needs, significantly improving washing efficiency. It is suitable for diverse large-capacity washing scenarios such as commercial laundries and large households, further expanding the product's application areas and market competitiveness. Furthermore, the reversing valve 8 is integrated into the dispensing box 1, resulting in a compact structure and clear, rationally laid-out pipe connections, reducing the risk of malfunctions caused by pipe crossover. Combined with the overall low-maintenance design of the system, this further enhances the operational reliability in various multi-drum 6 application scenarios.

[0034] like Figure 8As shown, the dispensing box 1 in this embodiment includes a box body 11, a top cover 12, and a bottom plate 13. The water storage chamber 111 and the cleaning agent chamber 112 are respectively disposed on the top side of the box body 11. The water inlet 1111 and the water outlet 1112 are respectively disposed on the side wall of the box body 11. Each of the water guide channels 113 is disposed side by side on the bottom side of the box body 11. The top cover 12 is disposed on the top side of the box body 11 to cover the top side of the box body 11. The top cover 12 is integrally formed with a liquid extraction channel 121 that corresponds to and communicates with each of the cleaning agent chambers 112. Each liquid extraction channel 121 is connected to each branch pipe of the liquid extraction pump 7. The bottom plate 13 is disposed on the bottom side of the box body 11 to cooperate with each of the water guide channels 113 to form a water guide chamber.

[0035] Specifically, in this embodiment, the water storage chamber 111 and the cleaning agent chamber 112 are centrally located on the top side of the box body 11, and the water guide channel 113 is arranged side by side on the bottom side of the box body 11, realizing the functional zoning of liquid storage and water guiding, avoiding structural interference between different functional areas, and making the water path layout clearer and reducing the difficulty of later maintenance; the inlet 1111 and the outlet 1112 are correspondingly located on the side wall of the box body 11, forming a smooth water path connection with the liquid storage area on the top side and the water guiding area on the bottom side, further ensuring the stability of water flow. The top cover 12 and the top side of the box body 11 cooperate to seal the liquid storage area. The integrated liquid extraction channel 121 on the top cover 12 corresponds one-to-one with each cleaning agent chamber 112 and is connected to the branch pipe of the liquid extraction pump 7. The integrated structure eliminates the need for additional pipeline connections, reducing the risk of leakage and simplifying the assembly process. At the same time, the bottom plate 13 and the water guide groove 113 on the bottom side of the box body 11 cooperate to form a closed water guide chamber. This prevents leakage of the mixture during delivery, improving the water circuit sealing. Furthermore, the closed water guide chamber allows for more concentrated water flow. Combined with the flow guiding design of the water guide groove 113, this further improves the efficiency and stability of delivering the mixture to each roller 6. In addition, the split design of the dispensing box 1 facilitates the individual processing, molding, and assembly of each component. Compared with the integrated structure, this reduces production difficulty and defect rate. Moreover, during subsequent maintenance, the top cover 12 or the bottom plate 13 can be disassembled for inspection, greatly improving maintenance convenience and reducing maintenance costs.

[0036] Furthermore, in this embodiment, the sizes of the various water guide channels 113 are inconsistent, and the width of each water guide channel 113 is adapted to the size of the corresponding roller 6. That is, the larger the roller 6, the wider the width of the water guide channel 113, and the smaller the roller 6, the narrower the width of the water guide channel 113. This embodiment further optimizes the water flow delivery performance in multi-roller 6 adaptation scenarios. On the one hand, it achieves a precise match between the water flow delivery volume and the needs of the roller 6. The larger roller 6 has a larger volume and requires more washing water and detergent mixture. The wide water guide channel 113 can provide a larger water flow channel cross-section, improve the flow rate and efficiency of the mixture delivery, and avoid water supply lag caused by the channel being too narrow. The smaller roller 6 requires less mixture. The narrow water guide channel 113 can ensure a stable water flow velocity, avoid water flow dispersion caused by the channel being too wide, and ensure that the mixture can enter the smaller roller 6 accurately and centrally. On the other hand, improving the stability of water flow and the uniformity of the mixed solution concentration, the groove width design adapted to the size of the drum 6 ensures that the water pressure and flow rate in each water guide groove 113 are kept within a reasonable range, avoiding eddies and turbulence caused by mismatch between groove width and flow rate. This ensures that the mixed solution has a uniform concentration during transportation and can fully contact the clothes after entering drums 6 of different sizes, guaranteeing the consistency of washing effect of each drum 6. At the same time, optimizing space utilization and structural rationality, the groove width of the water guide groove 113 is adapted to the size of the drum 6 as needed, without the need to uniformly adopt a wide groove design to adapt to large drums 6. The water guide grooves 113 can be rationally arranged in the limited bottom space of the dispensing box 1, reducing space waste. At the same time, the arrangement of each water guide groove 113 is more compact and orderly, further improving the overall compactness and rationality of the dispensing box 1, and adapting to the overall assembly requirements of multi-drum 6 washing machines.

[0037] Furthermore, each of the cleaning agent chambers 112 is provided with a liquid inlet 1121 on its side wall, and each liquid inlet 1121 is used to deliver different cleaning agents into different cleaning agent chambers 112.

[0038] like Figure 9 and Figure 10In this embodiment, the automatic water dispensing system based on flow meter water level measurement further includes a drain pipe 9, a drain pump 10, a drain valve 11, an air chamber 12, and a pressure sensor 13. One end of the drain pipe 9 is provided with a branch pipe 901 corresponding to the bottom of each of the rollers. The other end of the drain pipe 9 is connected to the drain pump 10. Each branch pipe 901 is provided with a drain valve 11, which controls the opening and closing of each branch pipe 901. One end of the air chamber 12 is connected to one of the branch pipes 901 and is located between the corresponding roller 6 and the drain valve 11; or, one end of the air chamber 12 is connected to the inner wall bottom of one of the rollers 6 or the drain valve 11 corresponding to that roller 6. The pressure sensor 13 is located at the other end of the air chamber 12 to sense changes in air pressure within the air chamber 12. Specifically, one end of the drain pipe 9 is connected to the interior of each drum 6 through various branch pipes 901. When water enters each drum 6, the water flows into each branch pipe 901 and is blocked by the drain valve 11. The water in the drum 6 will only be discharged when the drain valve 11 is opened. In this invention, the inner drum 6 of the washing machine is divided into a large drum and a small drum. Since the large drum has more and more complex functions, the water entry situation of the large drum is relatively more complex when executing different programs. In this embodiment, the addition of an air chamber 12 and a pressure sensor 13 further enhances the monitoring effect of the water level in the drum. When the water level in the large drum is higher, the pressure sensor 13 senses a greater air pressure. Through the correspondence between air pressure value and water level, the controller obtains the real-time water level in the large drum from the pressure sensor 13. This invention further improves the accuracy and reliability of water level control in multi-drum scenarios through a dual-dimensional water level monitoring mechanism that combines the main detection of the flow meter 5 with the auxiliary verification of the pressure sensor 13. In specific implementation, the first method is to connect one end of the air chamber 12 to the corresponding branch pipe 901 of the large roller, and the connection point is located between the large roller and its corresponding drain valve 11; the second method is to connect the other end of the air chamber 12 to the bottom side of the inner wall of the large roller, and the connection point is located at the bottom recess of the large roller; the third method is to connect the other end of the air chamber 12 to the drain valve 11, and the connection point is located before the valve of the drain valve 11, that is, the connection point is located on the side of the valve near the roller.

[0039] Example 2 This embodiment also provides a washing machine, which includes an automatic water dispensing system based on flow meter water level measurement as described in any one of embodiments.

[0040] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0045] Of course, the above description of the embodiments of the present invention is quite detailed, but it should not be construed as a limitation on the scope of protection of the present invention. The present invention may have many other implementations. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of the present invention. The scope of protection of the present invention is determined by the appended claims.

Claims

1. An automatic water dispensing system based on flow meter water level measurement, characterized in that, include: The dispensing box is equipped with a water storage chamber and a cleaning agent chamber. The water storage chamber is connected to an inlet pipe and an outlet pipe on both sides, respectively. A water inlet valve is located at the end of the water inlet pipe away from the water storage chamber; A flow meter is installed inside the inlet valve to monitor the inlet water flow rate; The water outlet pipe is connected to the roller at the end away from the water storage chamber; A liquid pump is installed on the dispensing box, and its two ends are respectively connected to the water storage chamber and the detergent chamber, for drawing detergent into the water storage chamber.

2. The automatic water supply system based on flow meter water level measurement according to claim 1, characterized in that, The dispensing box is provided with multiple cleaning agent chambers, and one end of the pump is provided with multiple branch pipes that are connected to each of the cleaning agent chambers in a one-to-one correspondence. The flow meter includes any one of Hall effect flow meter, impeller flow meter, and magnetic flow meter.

3. The automatic water supply system based on flow meter water level measurement according to claim 2, characterized in that, The water storage chamber is provided with an inlet and an outlet on two opposite sides. The end of the inlet pipe away from the inlet valve is connected to the inlet, and the end of the outlet pipe away from the roller is connected to the outlet.

4. The automatic water supply system based on flow meter water level measurement according to claim 3, characterized in that, The water storage chamber has a first recessed groove at one end, and the water inlet is located on the side wall of the first groove.

5. The automatic water supply system based on flow meter water level measurement according to claim 4, characterized in that, The other end of the water storage chamber is provided with a downwardly recessed second groove, and the water outlet is located on the side wall of the second groove.

6. The automatic water supply system based on flow meter water level measurement according to claim 5, characterized in that, The second groove has an arc-shaped surface to guide the water flow into the outlet.

7. The automatic water supply system based on flow meter water level measurement according to claim 3, characterized in that, Also includes: A reversing valve is provided; at least two rollers are provided, and the bottom of the dispensing box is provided with water guide grooves in the same number as the rollers. The reversing valve is provided on the dispensing box. One end of the reversing valve is connected to the water outlet, and the other end is provided with a water guide pipe that is connected to the water inlet end of each water guide groove in a one-to-one correspondence. The number of water outlet pipes is the same as the number of rollers. One end of each water outlet pipe is connected to the water outlet end of each water guide groove in a one-to-one correspondence. The other end of each water outlet pipe is connected to each roller in a one-to-one correspondence.

8. The automatic water supply system based on flow meter water level measurement according to claim 7, characterized in that, The dispensing box includes: The box body, the water storage chamber and the cleaning agent chamber are respectively arranged on the top side of the box body, the water inlet and the water outlet are respectively arranged on the side wall of the box body, and each of the water guide grooves are arranged side by side on the bottom side of the box body; A top cover, wherein the top cover is disposed on the top side of the box body to cover the top side of the box body; A base plate is disposed on the bottom side of the box body to cooperate with each of the water guide grooves to form a water guide chamber.

9. The automatic water supply system based on flow meter water level measurement according to claim 7, characterized in that, Also includes: The drain pipe has a branch pipe at one end that is connected to the bottom of each of the rollers, and a drain pump at the other end. Each of the branch pipes is provided with a drain valve; An air chamber, one end of which is connected to one of the branch pipes and located between the roller and the drain valve corresponding to the branch pipe; or, one end of the air chamber is connected to the bottom side of the inner wall of one of the rollers or to the drain valve corresponding to the roller. A pressure sensor is disposed at the other end of the air chamber to sense changes in air pressure within the air chamber.

10. A washing machine, characterized in that, Including the automatic water supply system based on flow meter water level measurement as described in any one of claims 1-9.

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