Water purification system and method of controlling the same

Abstract

The application relates to a water purification system and a control method thereof. The water purification system comprises a water inlet branch, a waste water branch, a water outlet branch, an exhaust branch and a controller. The water inlet branch comprises a constant pressure pump for providing driving water pressure and purifying raw water. The waste water branch is connected with the water inlet branch and used for discharging waste water. The water outlet branch is connected with the water inlet branch and comprises a water pump and a first check valve. The first check valve is arranged on the side of the water pump closer to a water outlet port. The water outlet branch is used for pumping the purified raw water and reducing water backflow of the water outlet port. One end of the exhaust branch is arranged between the water pump and the first check valve, and the other end of the exhaust branch is arranged upstream of the constant pressure pump. The exhaust branch is used for discharging the gas between the water pump and the first check valve through the water inlet branch and the waste water branch. The controller is used for controlling the on-off of each branch and the working state of the water pump and the constant pressure pump. Through the foregoing arrangement, the gas between the water pump and the first check valve can be efficiently reduced.

Description

Technical Field

[0001] This application relates to the field of water purification technology, and in particular to a water purification system and its control method. Background Technology

[0002] To prevent backflow at the water purification system outlet, existing water purification systems typically install check valves at the pump outlet to achieve one-way backflow prevention. However, in actual use, air can easily accumulate inside the check valve and its connected piping, causing a "stuck" phenomenon. Furthermore, due to the compressibility of gas, the pump cannot establish sufficient negative pressure to draw in liquid during the initial startup phase, resulting in the pump running dry, which in turn prevents normal water output and may even damage the pump body due to dry running.

[0003] Traditional techniques typically involve manually venting the gas, such as repeatedly starting and stopping the water pump. This method is inefficient, and frequent idling and starting will cause additional wear and tear on the water pump motor, shortening the equipment's lifespan. Summary of the Invention

[0004] Based on this, it is necessary to provide a water purification system and its control method, computer equipment, computer-readable storage medium, and computer program product that can at least improve exhaust efficiency in response to the above-mentioned technical problems.

[0005] In a first aspect, this application provides a water purification system, the water purification system comprising:

[0006] The water inlet branch includes a pressure stabilizing pump, which provides driving water pressure to the water inlet branch for pumping the raw water received by the water inlet branch. The water inlet branch is used to purify the raw water.

[0007] A wastewater branch is connected to one end of the inlet branch and is used to discharge wastewater generated during the purification of the raw water.

[0008] The outlet branch, connected to the other end of the inlet branch, includes a water pump and a first check valve. The first check valve is located on the side of the water pump closer to the outlet port. The outlet branch is used to pump the purified raw water to the outlet port and to reduce water backflow at the outlet port.

[0009] An exhaust branch is provided, one end of which is located between the water pump and the first check valve, and the other end of which is located upstream of the pressure stabilizing pump in the water inlet branch, for discharging the gas between the water pump and the first check valve through the water inlet branch and the wastewater branch.

[0010] The controller is used to control the opening and closing of the water inlet branch, wastewater branch, and exhaust branch, and also to control the working status of the water pump and the pressure stabilizing pump.

[0011] In one embodiment, the exhaust branch includes an exhaust solenoid valve and a second check valve;

[0012] One end of the exhaust solenoid valve is located between the water pump and the first check valve; the other end of the exhaust solenoid valve is connected to one end of the second check valve, and the other end of the second check valve is located upstream of the pressure stabilizing pump via a pipeline.

[0013] The controller is connected to the exhaust solenoid valve and is used to control the working state of the exhaust solenoid valve.

[0014] In one embodiment, the water inlet branch further includes a water inlet port, a water inlet solenoid valve, and a first filter element;

[0015] The inlet port is used to receive the raw water. One end of the inlet solenoid valve is connected to the inlet port via a pipeline, and the other end of the inlet solenoid valve is connected to one end of the pressure stabilizing pump via a pipeline. The other end of the pressure stabilizing pump is connected to the first inlet of the first filter element via a pipeline. The first outlet of the first filter element is connected to the outlet branch for transmitting the purified raw water to the outlet branch. The second outlet of the first filter element is connected to the wastewater branch for transmitting the wastewater generated during the purification of the raw water to the wastewater branch. One end of the exhaust branch is located between the inlet solenoid valve and the pressure stabilizing pump.

[0016] The controller is connected to the pressure stabilizing pump and the water inlet solenoid valve, and is used to control the working status of the pressure stabilizing pump and the water inlet solenoid valve.

[0017] In one embodiment, the water inlet branch further includes a second filter element;

[0018] The first inlet of the second filter element is connected to the inlet port, the first outlet of the second filter element is connected to one end of the inlet solenoid valve through a pipe, the second inlet of the second filter element is connected to the first outlet of the first filter element through a pipe, and the second outlet of the second filter element is connected to the outlet branch, for transmitting the purified raw water to the outlet branch; and / or;

[0019] The water inlet branch also includes a pulse counter, which is connected to the controller and is used to transmit the collected counting information of the water inlet solenoid valve to the controller.

[0020] In one embodiment, the water purification system further includes a water storage branch;

[0021] One end of the water storage branch is connected to the water inlet branch, and the other end of the water storage branch is connected to the water outlet branch. The water storage branch is used to store purified raw water.

[0022] In one embodiment, the water storage branch includes a water supply solenoid valve and a water storage tank;

[0023] One end of the water replenishment solenoid valve is connected to the water inlet branch through a pipeline, and the other end of the water replenishment solenoid valve is connected to the first water inlet of the water storage tank through a pipeline. The first water outlet of the water storage tank is connected to the water pump.

[0024] The controller is connected to the water supply solenoid valve and is used to control the working state of the water supply solenoid valve.

[0025] In one embodiment, the water storage branch further includes a first liquid level sensor and a second liquid level sensor;

[0026] The first liquid level sensor and the second liquid level sensor are located inside the water storage tank, and the second liquid level sensor is higher than the first liquid level sensor in the height direction of the water storage tank. The first liquid level sensor and the second liquid level sensor are connected to the controller.

[0027] In one embodiment, the water storage branch further includes an ultraviolet lamp; the ultraviolet lamp is located at the bottom of the water storage tank and is connected to the controller; and / or;

[0028] The water storage tank is also provided with a first opening, which is located at the top of the water storage tank.

[0029] Secondly, this application also provides a control method applied to the controller of the aforementioned water purification system, the method comprising:

[0030] In response to a preset command, after controlling the water supply to the first target water level in the storage tank, the air venting mode is activated.

[0031] The operating exhaust modes include:

[0032] The pressure stabilizing pump is turned on and at least a portion of the exhaust branch, the water inlet branch, and the wastewater branch are controlled to be open, so that the gas between the water pump and the first check valve is discharged through the exhaust branch, the water inlet branch, and the wastewater branch.

[0033] In one embodiment, when the water purification system includes a water storage tank and a water supply solenoid valve, after operating the venting mode, the method includes:

[0034] Close the exhaust solenoid valve of the exhaust branch and open the water supply solenoid valve of the water storage branch to replenish water to the first target water level of the water storage tank.

[0035] In one embodiment, the preset command includes one of the following: a venting command issued by the user, a venting command issued by the controller after the water purification system is powered on, and a venting command issued by the controller after the water level in the storage tank is lower than the second target water level.

[0036] The second target water level is lower than the first target water level.

[0037] Thirdly, this application also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the above-described method.

[0038] Fourthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the above-described method.

[0039] Fifthly, this application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the above-described method.

[0040] The aforementioned water purification system and its control method, computer equipment, computer-readable storage medium, and computer program product, by placing one end of the venting branch between the water pump and the first check valve, and placing the other end of the venting branch upstream of the pressure stabilizing pump, can use a controller to transmit the gas inside the first check valve and between the water pump and the first check valve through the venting branch to the inlet branch along with the water flow. Under the action of the pressure stabilizing pump in the inlet branch, the raw water carrying the gas is discharged through the inlet branch and the waste branch, thereby realizing the removal of gas from the water purification system without manual operation or the need for additional venting devices outside the water purification system. The controller can efficiently reduce the first check valve and the air resistance between the first check valve and the water pump, increasing the likelihood of normal operation of the water pump. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is one of the structural schematic diagrams of a water purification system in one embodiment.

[0043] Figure 2 This is one of the schematic diagrams showing the controller connection relationship of a water purification system in one embodiment.

[0044] Figure 3 This is the second schematic diagram of the water purification system in one embodiment.

[0045] Figure 4 This is the second schematic diagram of the controller connection relationship of the water purification system in one embodiment.

[0046] Figure 5 This is the third schematic diagram of the water purification system in one embodiment.

[0047] Figure 6 This is the fourth schematic diagram of the water purification system in one embodiment.

[0048] Figure 7 This is the fifth schematic diagram of the water purification system in one embodiment.

[0049] Figure 8 This is the sixth schematic diagram of the water purification system in one embodiment.

[0050] Figure 9 This is the seventh schematic diagram of the water purification system in one embodiment.

[0051] Figure 10 This is the eighth schematic diagram of the water purification system in one embodiment.

[0052] Figure 11 This is the ninth schematic diagram of the water purification system in one embodiment.

[0053] Figure 12 This is the third schematic diagram of the controller connection relationship of the water purification system in one embodiment.

[0054] Figure 13 This is the tenth schematic diagram of the water purification system in one embodiment.

[0055] Figure 14 This is the fourth schematic diagram of the controller connection relationship of the water purification system in one embodiment.

[0056] Figure 15 This is one of the flowcharts illustrating the control method in one embodiment.

[0057] Figure 16 This is a second flowchart illustrating the control method in one embodiment.

[0058] Figure 17 This is the third flowchart of a control method in one embodiment.

[0059] Figure 18 This is an internal structural diagram of a computer device in one embodiment.

[0060] Figure label:

[0061] 10: Inlet branch; 101: Pressure stabilizing pump; 102: Inlet port; 103: Inlet solenoid valve; 104: First filter element; 105: Second filter element; 106: Pulse counter; 20: Wastewater branch; 201: Wastewater solenoid valve; 202: Wastewater port; 30: Outlet branch; 301: Water pump; 302: First check valve; 303: Outlet port; 40: Vent branch; 401: Vent solenoid valve; 402: Second check valve; 50: Storage branch; 501: Water replenishment solenoid valve; 502: Storage tank; 503: First level sensor; 504: Second level sensor; 505: Ultraviolet lamp; 60: Controller. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0063] It should be noted that the terms "first," "second," etc., used in this application can be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from the second element. The terms "comprising" and "having," and any variations thereof, used in this application, are intended to cover non-exclusive inclusion. The term "multiple" used in this application refers to two or more. The term "and / or" used in this application refers to one of the embodiments, or any combination of multiple embodiments.

[0064] Generally, when water supply is restored after a water outage, a large amount of air will be introduced into the inlet pipe of the water purification system. Replacing some components in the water purification system may also introduce air. Additionally, if the water purification system's piping has poor airtightness, air from the negative pressure side can be drawn into the pipes during the operation of the water pump. Because the check valve is unidirectional, the air drawn in during the aforementioned process will accumulate in the check valve and its connected pipes. When air accumulates between the check valve and the water pump, due to the compressibility of air, the negative pressure generated by the pump will act on the air, causing it to compress and expand, preventing it from acting on the water and thus preventing pumping. Manually venting the air is cumbersome and inefficient. Adding an external venting device not only requires additional installation space but also increases user costs.

[0065] In one embodiment, see [reference] Figure 1 and Figure 2 This application provides a water purification system, which includes an inlet branch 10, a wastewater branch 20, an outlet branch 30, an exhaust branch 40, and a controller 60.

[0066] The inlet branch 10 includes a pressure stabilizing pump 101, which provides driving water pressure for the inlet branch 10 to pump the raw water received by the inlet branch 10. The inlet branch 10 is used to purify the raw water.

[0067] The inlet branch 10 receives external tap water, river or lake water, etc., as raw water, and delivers it to the downstream water purification device through the driving water pressure provided by the pressure stabilizing pump 101, thereby purifying the raw water. The raw water can also be water transmitted through the exhaust branch 40. That is, the pressure stabilizing pump 101 can also supply the raw water transmitted through the exhaust branch 40 to the downstream water purification device and discharge the gas in the water flow through the wastewater branch 20. The driving water pressure refers to the water pressure at which the raw water before the pressure stabilizing pump 101 is pumped to the downstream water purification device, that is, the water pressure at which tap water, river or lake water, or water transmitted through the exhaust branch 40 is pumped to the downstream water purification device. The pressure stabilizing pump 101 can be a diaphragm pump, a self-priming pressure stabilizing pump, a peristaltic pump, etc., and there are no restrictions here.

[0068] Wastewater branch 20 is connected to one end of inlet branch 10 and is used to discharge wastewater generated during the purification of raw water. Wastewater can carry gas, meaning that wastewater branch 20 can also discharge gas carried in the raw water, thereby achieving the removal of air from the water purification system.

[0069] The outlet branch 30 is connected to the other end of the inlet branch 10 and includes a water pump 301 and a first check valve 302. The first check valve 302 is located on the side of the water pump 301 closer to the outlet port 303. The outlet branch 30 is used to pump the purified raw water to the outlet port 303 and reduce the backflow of water at the outlet port 303.

[0070] The water pump 301 is used to pump the purified raw water from the inlet branch 10 to the outlet port 303. A faucet can be connected to the outlet port 303 to transfer the purified raw water. The first check valve 302 is a one-way valve that can transfer the purified raw water from the side of the water pump 301 to the outlet port 303 and reduce the backflow of water from the outlet port 303 to the side of the first check valve 302 near the water pump 301.

[0071] One end of the exhaust branch 40 is located between the water pump 301 and the first check valve 302, and the other end of the exhaust branch 40 is located upstream of the pressure stabilizing pump 101 in the water inlet branch 10, so as to discharge the gas between the water pump 301 and the first check valve 302 to the water inlet branch 10.

[0072] One end of the vent branch 40 is located between the water pump 301 and the first check valve 302, which can transport the gas between the water pump 301 and the first check valve 302 to the vent branch 40 with the water flow. The other end of the vent branch 40 is located upstream of the pressure stabilizing pump 101 in the water inlet branch 10, which means that the other end of the vent branch 40 is located between the water inlet port 102 of the water inlet branch 10 and the pressure stabilizing pump 101, which can transport the raw water transmitted by the vent branch 40 to the downstream water purification device for treatment through the pressure stabilizing pump 101, and then transmit it to the water outlet branch 30 again.

[0073] The controller 60 is used to control the opening and closing of the water inlet branch 10, the wastewater branch 20, and the exhaust branch 40, and also to control the working status of the water pump 301 and the pressure stabilizing pump 101.

[0074] The controller 60 controls the operating status of the solenoid valves in the inlet branch 10, wastewater branch 20, and vent branch 40 to open or close these branches. The controller 60 also controls the operating status of the water pump 301, enabling water to be pumped out of the water purification system from the outlet branch 30. Furthermore, the controller 60 controls the operating status of the pressure stabilizing pump 101, allowing it to not only turn on or off but also control the driving water pressure. The controller 60 can be a microcontroller (MCU), single-chip microcomputer, etc., and is not limited thereto.

[0075] The aforementioned water purification system, by placing one end of the vent branch 40 between the water pump 301 and the first check valve 302, and placing the other end of the vent branch 40 upstream of the pressure stabilizing pump 101, allows the controller 60 to transmit the gas inside the first check valve 302 and between the water pump 301 and the first check valve 302 along with the water flow through the vent branch 40 to the water inlet branch 10. Under the action of the pressure stabilizing pump 101 in the water inlet branch 10, the raw water carrying the gas is discharged through the water inlet branch 10 and the waste branch, thereby achieving the removal of gas from the water purification system without manual operation or the need for additional venting devices outside the water purification system. The controller 60 can efficiently reduce the air resistance between the first check valve 302 and the water pump 301, increasing the likelihood of normal operation of the water pump 301.

[0076] In one embodiment, see [reference] Figure 3 and Figure 4 The exhaust branch 40 includes an exhaust solenoid valve 401.

[0077] One end of the exhaust solenoid valve 401 is located between the water pump 301 and the first check valve 302, and the other end of the exhaust solenoid valve 401 is located upstream of the pressure stabilizing pump 101 via a pipeline.

[0078] The controller 60 is connected to the exhaust solenoid valve 401 and is used to control the working state of the exhaust solenoid valve 401.

[0079] When venting is required, the controller 60 controls the opening of the venting solenoid valve 401, that is, the venting branch 40 is opened. The controller 60 controls the pressure stabilizing pump 101 to form a negative pressure at its inlet end (the end near the upstream of the pressure stabilizing pump 101, and the outlet end of the pressure stabilizing pump 101 near the wastewater branch 20) so as to draw the gas in the first check valve 302 and between the water pump 301 and the first check valve 302 with the water flow to the upstream of the pressure stabilizing pump 101, and then discharge it through the wastewater branch 20 connected to the inlet branch 10.

[0080] The controller 60 can discharge the gas in the first check valve 302 and between the water pump 301 and the first check valve 302 by controlling the state of the exhaust solenoid valve 401 and the pressure stabilizing pump 101, thereby improving the efficiency of gas discharge in the water purification system.

[0081] In one embodiment, see [reference] Figure 4 and Figure 5 The exhaust branch 40 includes an exhaust solenoid valve 401 and a second check valve 402.

[0082] One end of the exhaust solenoid valve 401 is located between the water pump 301 and the first check valve 302; the other end of the exhaust solenoid valve 401 is connected to one end of the second check valve 402, and the other end of the second check valve 402 is located upstream of the pressure stabilizing pump 101 via a pipeline.

[0083] The controller 60 is connected to the exhaust solenoid valve 401 and is used to control the working state of the exhaust solenoid valve 401.

[0084] It is understandable that if there is gas between the water pump 301 and the first check valve 302, even if the water pump 301 is working, it may be unable to open the first check valve 302 due to air blockage, thus preventing the purified raw water from being pumped to the outlet port 303. However, in this embodiment, the controller 60 controls the opening of the exhaust solenoid valve 401, which initially opens the exhaust branch 40. Air in the pipeline between the water pump 301 and the first check valve 302, under the negative pressure generated by the pressure stabilizing pump 101, enters the pressure stabilizing pump 101 through the exhaust branch 40 and is then pushed to the wastewater branch 20 for discharge. As the air is discharged, the water path gradually fills with water, allowing the water pump 301 to build up pressure normally. In other words, the controller 60 controls the pressure-stabilizing pump 101 to create negative pressure at its inlet, which opens the second check valve 402. This allows water carrying air, both inside the first check valve 302 and between the pump 301 and the first check valve 302, to be transferred upstream of the pressure-stabilizing pump 101. From there, the water is transferred to the wastewater branch 20 via the pressure-stabilizing pump 101. This effectively reduces the amount of air in and around the first check valve 302, thereby increasing the likelihood of normal operation of the pump 301 and the first check valve 302. Furthermore, by setting the second check valve 402, the raw water from the inlet branch 10 can be prevented from flowing into the space between the pump 301 and the first check valve 302 through the vent branch 40, reducing the possibility of the raw water contaminating the purified water.

[0085] In one embodiment, the water inlet branch 10 further includes a water inlet port 102, a water inlet solenoid valve 103, and a first filter element 104 (equivalent to the back-end water purification device including the first filter element 104).

[0086] See Figure 4 and Figure 6 The inlet port 102 is used to receive raw water. One end of the inlet solenoid valve 103 is connected to the inlet port 102 via a pipeline, and the other end of the inlet solenoid valve 103 is connected to one end of the pressure stabilizing pump 101 via a pipeline. The other end of the pressure stabilizing pump 101 is connected to the first inlet A1 of the first filter element 104 via a pipeline. The first outlet B1 of the first filter element 104 is connected to the outlet branch 30 to transfer the purified raw water to the outlet branch 30. The second outlet B2 of the first filter element 104 is connected to the wastewater branch 20 to transfer the wastewater generated during the purification of the raw water to the wastewater branch 20. At least a portion of the wastewater carries gas. One end of the exhaust branch 40 is located between the inlet solenoid valve 103 and the inlet port 102.

[0087] The controller 60 is connected to the pressure stabilizing pump 101 and the inlet solenoid valve 103, and is used to control the working status of the pressure stabilizing pump 101 and the inlet solenoid valve 103.

[0088] For example, the inlet port 102 can be connected to a household tap water outlet to receive tap water. When water purification is required, the controller 60 controls the opening of the inlet solenoid valve 103 and controls the pressure stabilizing pump 101 to allow tap water to enter the inlet branch 10 and, through the inlet solenoid valve 103 and the pressure stabilizing pump 101, enter the first filter element 104. The first filter element 104 can be a reverse osmosis membrane element (RO filter element). The RO filter element uses liquid phase separation technology to separate the raw water into product water (purified raw water) and wastewater, and transmits the product water to the outlet branch 30 and the wastewater to the wastewater branch 20. If the raw water comes from the exhaust branch 40, the wastewater will carry air, which will be discharged outside the water purification system along with the wastewater.

[0089] In this embodiment, water carrying air between the water pump 301 and the first check valve 302 will only be drawn if the water inlet 102 is insufficient. If the water inlet 102 is sufficient, a small amount of water carrying air between the water pump 301 and the first check valve 302 may be drawn, or even none may be drawn at all. To improve the drawing efficiency, the water flow rate at the tap can be controlled to smoothly draw out water carrying air. A water flow solenoid valve (not shown in the figure) can also be installed upstream of the connection end of the vent branch 40, that is, one end of the vent branch 40 is located between the water flow solenoid valve and the water inlet solenoid valve 103. The water flow solenoid valve is used to control the water inlet 102. When venting is required, the controller 60 controls the water flow solenoid valve to reduce or close the valve opening, opens the inlet solenoid valve 103, and controls the pressure stabilizing pump 101 to operate. This allows the air-carrying water to flow through the venting branch 40, the inlet solenoid valve 103, the pressure stabilizing pump 101, the first filter element 104, and finally into the wastewater branch 20, thereby venting the air outside the water purification system. Through the control of the controller 60, the air resistance before the water pump 301 can be efficiently reduced, allowing the water pump 301 to smoothly open the first check valve 302 and pump the purified raw water to the outlet port 303.

[0090] In one embodiment, the water inlet branch 10 further includes a water inlet port 102, a water inlet solenoid valve 103, and a first filter element 104 (equivalent to the back-end water purification device including the first filter element 104).

[0091] See Figure 4 and Figure 7The inlet port 102 is used to receive raw water. One end of the inlet solenoid valve 103 is connected to the inlet port 102 via a pipeline, and the other end of the inlet solenoid valve 103 is connected to one end of the pressure stabilizing pump 101 via a pipeline. The other end of the pressure stabilizing pump 101 is connected to the first inlet A1 of the first filter element 104 via a pipeline. The first outlet B1 of the first filter element 104 is connected to the outlet branch 30 to transfer the purified raw water to the outlet branch 30. The second outlet B2 of the first filter element 104 is connected to the wastewater branch 20 to transfer the wastewater generated during the purification of the raw water to the wastewater branch 20. At least a portion of the wastewater carries gas. One end of the exhaust branch 40 is located between the inlet solenoid valve 103 and the pressure stabilizing pump 101.

[0092] The controller 60 is connected to the pressure stabilizing pump 101 and the inlet solenoid valve 103, and is used to control the working status of the pressure stabilizing pump 101 and the inlet solenoid valve 103.

[0093] In this embodiment, when venting is required, the controller 60 can control the closing of the inlet solenoid valve 103, the opening of the vent solenoid valve 401, and the operation of the pressure stabilizing pump 101. The pressure stabilizing pump 101 creates a negative pressure at its inlet, which can open the second check valve 402, allowing the water carrying air between the pump 301 and the first check valve 302 to flow smoothly to the pressure stabilizing pump 101, pass through the first filter element 104, and enter the wastewater branch 20, thereby venting the air outside the water purification system. Through the control of the controller 60, the air resistance before the pump 301 can be efficiently reduced, allowing the pump 301 to smoothly open the first check valve 302 and pump the purified raw water to the outlet port 303.

[0094] In one embodiment, see [reference] Figure 4 and Figure 8 Wastewater branch 20 also includes wastewater solenoid valve 201 and wastewater port 202.

[0095] One end of the wastewater solenoid valve 201 is connected to the second outlet B2 of the first filter element 104, and the other end of the wastewater solenoid valve 201 is connected to the wastewater port 202, which can be connected to an external wastewater storage device or to a sewer. The controller 60 is connected to the wastewater solenoid valve 201 and is used to control the working state of the wastewater solenoid valve 201.

[0096] When wastewater needs to be discharged, the controller 60 opens the wastewater solenoid valve 201. The wastewater can carry air from the second outlet B2 of the first filter element 104 to the wastewater branch 20, and then be discharged from the water purification system through the wastewater solenoid valve 201 and the wastewater port 202, thereby reducing the air resistance between the water pump 301 and the first check valve 302.

[0097] In one embodiment, the water inlet branch 10 further includes a second filter element 105 (equivalent to the back-end water purification device including a first filter element 104 and a second filter element 105).

[0098] See Figure 9 The first inlet C1 of the second filter element 105 is connected to the inlet port 102. The first outlet D1 of the second filter element 105 is connected to one end of the inlet solenoid valve 103 via a pipe. The second inlet C2 of the second filter element 105 is connected to the first outlet B1 of the first filter element 104 via a pipe. The second outlet D2 of the second filter element 105 is connected to the outlet branch 30, which is used to transmit the purified raw water to the outlet branch 30. The second filter element 105 can be a composite filter element.

[0099] For example, tap water enters the first filter element 104 through the inlet port 102 and the first inlet C1 of the second filter element 105 for pre-treatment. This pre-treatment effectively blocks large particulate impurities in the tap water and also performs chemical adsorption, effectively reducing the damage of chemical substances to the structure of the first filter element 104. After pre-treatment, the water exits through the first outlet D1 of the second filter element 105, passes through the inlet solenoid valve 103 and the pressure stabilizing pump 101, and enters the first filter element 104 through the first inlet A1. The first filter element 104 purifies the pre-treated tap water and transmits the purified tap water to the second filter element 105 through the first outlet B1 of the first filter element 104 and the second inlet C2 of the second filter element 105. The second filter element 105 performs post-filtration on the purified tap water. Post-filtration can adsorb odors in the purified tap water and further filter bacteria and viruses, improving safety. The first filter element 104 discharges the post-filtered tap water through the second outlet D2 of the second filter element 105 to the outlet branch 30.

[0100] By setting a second filter element 105, the input raw water can be further purified, improving water safety. It can also reduce the damage of chemical substances in the raw water to the structure of the first filter element 104 and extend the service life of the water purification system.

[0101] In one embodiment, see [reference] Figure 4 and Figure 10 The water inlet branch 10 also includes a pulse counter 106, which is connected to the controller 60 and is used to transmit the collected counting information of the water inlet solenoid valve 103 to the controller 60.

[0102] The controller 60 can obtain the amount of water flowing through the inlet solenoid valve 103 based on the counting information collected by the pulse counter 106.

[0103] For example, the counting information includes the number of pulses. Specifically, each pulse represents a fixed amount of water. The controller 60 can calculate the total amount of water flowing through the inlet solenoid valve 103 or the amount of water entering the valve at one time by accumulating the number of pulses.

[0104] By obtaining the total water flow through the inlet solenoid valve 103, the controller 60 can estimate the service life of the water purification system. By obtaining the single inlet water volume, the controller 60 can provide a basis for controlling the outlet branch 30 or other branches.

[0105] In one embodiment, the water purification system also includes a water storage branch 50.

[0106] One end of the water storage branch 50 is connected to the inlet branch 10, and the other end of the water storage branch 50 is connected to the outlet branch 30. The water storage branch 50 is used to store purified raw water. The controller 60 is used to turn the water storage branch 50 on or off.

[0107] For example, in the case where the water inlet branch 10 includes a first filter element 104 but does not include a second filter element 105, one end of the water storage branch 50 is connected to the first outlet B1 of the first filter element 104 for receiving and storing purified raw water. In another example, see [reference needed]. Figure 11 In the case where the inlet branch 10 includes a first filter element 104 and a second filter element 105, one end of the water storage branch 50 is connected to the second outlet D2 of the second filter element 105 to receive and store the raw water after post-filtration. When water needs to be discharged, the stored purified raw water is sent out through the outlet branch 30.

[0108] By setting up a water storage branch 50, purified raw water can be stored in advance. When water is needed, the stored purified raw water can be output in a timely manner, improving the portability for users.

[0109] In one embodiment, see [reference] Figure 11 and Figure 12 The water storage branch 50 includes a water replenishment solenoid valve 501 and a water storage tank 502.

[0110] One end of the water replenishment solenoid valve 501 is connected to the water inlet branch 10 through a pipeline, and the other end of the water replenishment solenoid valve 501 is connected to the first water inlet E1 of the water storage tank 502 through a pipeline. The first water outlet F1 of the water storage tank 502 is connected to the water pump 301.

[0111] The controller 60 is connected to the water supply solenoid valve 501 and is used to control the working state of the water supply solenoid valve 501 so as to open or close the water storage branch 50.

[0112] For example, in the case where the water inlet branch 10 includes a first filter element 104 but does not include a second filter element 105, one end of the water replenishment solenoid valve 501 is connected to the first outlet B1 of the first filter element 104 via a pipe. In another example, in the case where the water inlet branch 10 includes a first filter element 104 and a second filter element 105, one end of the water replenishment solenoid valve 501 is connected to the second outlet D2 of the second filter element 105 via a pipe.

[0113] When water is needed, the controller 60 controls the water pump 301 to operate. Under the action of the water pump 301, the purified raw water stored in the water storage tank 502 is output through the first outlet F1 of the water storage tank 502, passing through the water pump 301 and the first check valve 302 to reach the outlet port 303. At this time, the controller 60 can open the water replenishment solenoid valve 501 to allow the purified raw water to flow into the water storage tank 502 to replenish the water storage tank 502. When no water replenishment is needed, the controller 60 closes the water replenishment solenoid valve 501.

[0114] By setting up a water storage tank 502, purified raw water can be stored, thus enabling the output of purified raw water at any time. By setting up a water replenishment solenoid valve 501, the timing of the purified raw water flowing into the water storage tank 502 can be controlled, enabling water replenishment as needed.

[0115] In one embodiment, see [reference] Figure 13 and Figure 14 The water storage branch 50 also includes a first liquid level sensor 503 and a second liquid level sensor 504.

[0116] The first liquid level sensor 503 and the second liquid level sensor 504 are located inside the water storage tank 502. In the height direction of the water storage tank 502, the second liquid level sensor 504 is higher than the first liquid level sensor 503. The first liquid level sensor 503 and the second liquid level sensor 504 are connected to the controller 60.

[0117] For example, if the first liquid level sensor 503 does not detect water level information, it indicates that the water level in the storage tank 502 is lower than the target water level, and water can be added to the storage tank 502. If the second liquid level sensor 504 detects water level information, it indicates that the water level in the storage tank 502 has reached the storage target, and water addition can be stopped. The specific height settings of the first liquid level sensor 503 and the second liquid level sensor 504 can be set according to requirements and are not limited here.

[0118] By setting the first liquid level sensor 503 and the second liquid level sensor 504, the water volume information in the water storage tank 502 can be provided, which provides a basis for the controller 60 to control the working status of each valve and the water pump 301.

[0119] In one embodiment, see [reference] Figure 13 and Figure 14 The water storage branch 50 also includes an ultraviolet lamp 505; the ultraviolet lamp 505 is located at the bottom of the water storage tank 502 and is connected to the controller 60.

[0120] For example, the ultraviolet lamp 505 is located at the bottom of the housing surface of the water storage tank 502. The controller 60 can control the ultraviolet lamp 505 to be turned on or off.

[0121] Understandably, although the first filter element 104 and the second filter element 105 filter and sterilize the raw water, the water storage tank 502 is a humid and relatively sealed environment, which is prone to bacterial growth. The ultraviolet lamp 505 is installed to emit ultraviolet light to destroy the structure of bacteria in the water storage tank 502, thereby achieving a sterilization effect and improving water safety.

[0122] In one embodiment, the water tank 502 is further provided with a first opening (not shown in the figure), which is located at the top of the water tank 502.

[0123] The first opening is located at the top of the water storage tank 502, which means that the top of the shell of the water storage tank 502 has a first opening. The first opening can be used as a ventilation port or an overflow port. An air filtration device can be installed at the first opening as needed, or the first opening can be connected to the wastewater branch 20 or other outlets to discharge water overflowing from the water storage tank 502. No limitation is made on the connecting branch or connecting device of the first opening.

[0124] By setting the first opening, the water storage tank 502 can be ventilated, or excess water can be drained from the water storage tank 502.

[0125] In one embodiment, this application provides a control method applied to the controller of the water purification system in the above embodiments, see reference. Figure 15 The method includes step S102, wherein:

[0126] In step S102, in response to a preset command, after controlling the water supply to the first target water level in the storage tank, the venting mode is activated.

[0127] See Figure 16 The operation of the exhaust mode includes step S202, wherein:

[0128] S202, start the pressure stabilizing pump and control at least part of the exhaust branch, the water inlet branch and the wastewater branch to be open, so that the gas between the water pump and the first check valve is discharged through the exhaust branch, the water inlet branch and the wastewater branch.

[0129] For example, if one end of the exhaust branch is located on the side of the inlet solenoid valve near the inlet port, the inlet solenoid valve of the inlet branch will open, and the gas carried by the raw water in the exhaust branch can be discharged after passing through the inlet solenoid valve, the pressure stabilizing pump, the first filter element, and the wastewater branch. In this example, when running the exhaust mode, the controller needs to open the exhaust solenoid valve of the exhaust branch, the inlet solenoid valve and pressure stabilizing pump of the inlet branch, and the wastewater solenoid valve of the wastewater branch.

[0130] In another example, with one end of the exhaust branch positioned between the inlet solenoid valve and the pressure-stabilizing pump, the controller closes the inlet solenoid valve, allowing the gas carried by the raw water in the exhaust branch to be discharged after passing through the pressure-stabilizing pump, the first filter element, and the wastewater branch. In this example, during exhaust mode operation, the exhaust solenoid valve of the exhaust branch, the pressure-stabilizing pump of the inlet branch, and the wastewater solenoid valve of the wastewater branch are all activated.

[0131] For example, the venting mode can stop after a fixed running time or after pumping a fixed volume of water. The specific settings can be determined based on data and experience obtained from simulation experiments, and are not limited here.

[0132] When the venting mode is running, if the water level in the storage tank is lower than the third target water level, the controller can stop the venting mode regardless of whether it runs for a fixed time or pumps a fixed amount of water. The third target water level is lower than the first target water level.

[0133] The first target water level can be the water level detected by the second liquid level sensor. That is, before operating the venting mode, the water in the storage tank needs to be stored to the set height of the second liquid level sensor. By replenishing the water in the storage tank to the first target water level, the possibility of the storage tank becoming empty due to excessive water pumping during the venting process can be reduced, thereby protecting the water purification system. For example, the third target water level can be the water level detected by the first liquid level sensor. If the water level falls below the lowest level detectable by the first liquid level sensor within a preset time, and there is a risk of the storage tank emptying, then the venting mode will be immediately stopped once the water level falls below the third target water level. The setting position of the first liquid level sensor can be determined based on the emptying time of the storage tank after the water level falls below the third target water level, and is not limited here.

[0134] The above control method, by placing one end of the venting branch between the water pump and the first check valve, and the other end of the venting branch upstream of the pressure stabilizing pump, allows the controller to transmit the gas inside the first check valve and between the water pump and the first check valve through the venting branch to the inlet branch along with the water flow. Under the action of the pressure stabilizing pump in the inlet branch, the raw water carrying the gas is discharged through the inlet branch and the waste branch, thereby removing the gas from the water purification system. No manual operation is required, and no additional venting device needs to be installed outside the water purification system. The controller can efficiently reduce the first check valve and the air resistance between the first check valve and the water pump, increasing the likelihood of normal operation of the water pump.

[0135] In one embodiment, when the water purification system includes a water storage tank and a water supply solenoid valve, after operating the venting mode, refer to... Figure 17 The method further includes step S104, wherein:

[0136] Step S104: Close the exhaust branch and open the water supply solenoid valve of the water storage branch to replenish water to the first target water level of the water storage tank.

[0137] If water is not replenished after venting, the water level in the storage tank may fall below the water pump's intake, causing the pump to run dry or even be damaged. Replenishing the storage tank with purified water to the first target level after venting not only ensures the tank always has water to meet user needs but also protects the pump and extends the lifespan of the water purification system.

[0138] In one embodiment, the preset command includes one of the following: a venting command issued by the user, a venting command issued by the controller after the water purification system is powered on, or a venting command issued by the controller after the water level in the storage tank is lower than the second target water level.

[0139] The second target water level is lower than the first target water level.

[0140] For example, the second target water level can be equal to the third target water level. The second target water level can be detected using a first level sensor. If the water level in the storage tank is lower than the second target water level, the controller can continue to control the water pump to pump for a preset time (equivalent to pumping for a preset time after the first level sensor fails to detect the water level), such as 10 seconds, to ensure the water in the storage tank is emptied (emptying mode). Then, the controller controls water replenishment so that the venting mode is activated once the water level in the storage tank reaches the first target water level. In another example, if the second target water level is lower than the third target water level, the water purification system needs to install a third level sensor in the storage tank. This third level sensor is lower than the first level sensor in the height direction of the storage tank. In this example, if the water level in the storage tank is lower than the second target water level, it indicates that the storage tank is currently empty. At this time, the controller controls water replenishment so that the venting mode is activated once the water level in the storage tank reaches the first target water level. In other words, when an air venting command is issued based on the water level in the storage tank, the water in the storage tank must be emptied first before water is replenished and the air venting mode is activated.

[0141] In this embodiment, the water purification system can also operate in venting mode after replenishing the water in the storage tank to the first target water level, based on a user-issued venting command. Additionally, after the water purification system is powered on, the controller automatically controls the system to replenish the water in the storage tank to the first target water level before operating in venting mode.

[0142] Understandably, the water purification system can operate in venting mode when the user deems venting necessary, in which case the controller can respond to the user's venting command and vent. Alternatively, it can be used when the water purification system detects potential air resistance, such as when the system is powered on, the storage tank is nearing or has already reached the emptying mode. By monitoring the status of the water purification system, the controller can automatically identify situations requiring venting and thus automatically operate in venting mode, thereby improving venting efficiency.

[0143] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages in other steps. It is understood that the steps in different embodiments can be freely combined as needed, and all non-contradictory solutions formed by such combinations are within the scope of protection of this application.

[0144] In one exemplary embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 18 As shown, this computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The database stores data related to the control methods of the water purification system. The I / O interfaces are used for exchanging information between the processor and external devices. The communication interface is used for communicating with external terminals via a network connection. When the computer program is executed by the processor, it implements a control method.

[0145] Those skilled in the art will understand that Figure 18 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0146] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the above embodiments.

[0147] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps of the embodiments described above.

[0148] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps of the above embodiments.

[0149] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0150] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0151] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A water purification system, characterized in that, The water purification system includes: The water inlet branch includes a pressure stabilizing pump, which provides driving water pressure to the water inlet branch for pumping the raw water received by the water inlet branch. The water inlet branch is used to purify the raw water. A wastewater branch is connected to one end of the inlet branch and is used to discharge wastewater generated during the purification of the raw water. The outlet branch, connected to the other end of the inlet branch, includes a water pump and a first check valve. The first check valve is located on the side of the water pump closer to the outlet port. The outlet branch is used to pump the purified raw water to the outlet port and to reduce water backflow at the outlet port. An exhaust branch is provided, one end of which is located between the water pump and the first check valve, and the other end of which is located upstream of the pressure stabilizing pump in the water inlet branch, for discharging the gas between the water pump and the first check valve through the water inlet branch and the wastewater branch. The controller is used to control the opening and closing of the water inlet branch, wastewater branch, and exhaust branch, and also to control the working status of the water pump and the pressure stabilizing pump.

2. The water purification system according to claim 1, characterized in that, The exhaust branch includes an exhaust solenoid valve and a second check valve. One end of the exhaust solenoid valve is located between the water pump and the first check valve; the other end of the exhaust solenoid valve is connected to one end of the second check valve, and the other end of the second check valve is located upstream of the pressure stabilizing pump via a pipeline. The controller is connected to the exhaust solenoid valve and is used to control the working state of the exhaust solenoid valve.

3. The water purification system according to claim 1, characterized in that, The water inlet branch also includes a water inlet port, a water inlet solenoid valve, and a first filter element; The inlet port is used to receive the raw water. One end of the inlet solenoid valve is connected to the inlet port via a pipeline, and the other end of the inlet solenoid valve is connected to one end of the pressure stabilizing pump via a pipeline. The other end of the pressure stabilizing pump is connected to the first inlet of the first filter element via a pipeline. The first outlet of the first filter element is connected to the outlet branch for transmitting the purified raw water to the outlet branch. The second outlet of the first filter element is connected to the wastewater branch for transmitting the wastewater generated during the purification of the raw water to the wastewater branch. One end of the exhaust branch is located between the inlet solenoid valve and the pressure stabilizing pump. The controller is connected to the pressure stabilizing pump and the water inlet solenoid valve, and is used to control the working status of the pressure stabilizing pump and the water inlet solenoid valve.

4. The water purification system according to claim 3, characterized in that, The water inlet branch also includes a second filter element; The first inlet of the second filter element is connected to the inlet port, the first outlet of the second filter element is connected to one end of the inlet solenoid valve through a pipe, the second inlet of the second filter element is connected to the first outlet of the first filter element through a pipe, and the second outlet of the second filter element is connected to the outlet branch, for transmitting the purified raw water to the outlet branch; and / or; The water inlet branch also includes a pulse counter, which is connected to the controller and is used to transmit the collected counting information of the water inlet solenoid valve to the controller.

5. The water purification system according to claim 3 or 4, characterized in that, The water purification system also includes a water storage branch; One end of the water storage branch is connected to the water inlet branch, and the other end of the water storage branch is connected to the water outlet branch. The water storage branch is used to store purified raw water.

6. The water purification system according to claim 5, characterized in that, The water storage branch includes a water supply solenoid valve and a water storage tank; One end of the water replenishment solenoid valve is connected to the water inlet branch through a pipeline, and the other end of the water replenishment solenoid valve is connected to the first water inlet of the water storage tank through a pipeline. The first water outlet of the water storage tank is connected to the water pump. The controller is connected to the water supply solenoid valve and is used to control the working state of the water supply solenoid valve.

7. The water purification system according to claim 6, characterized in that, The water storage branch also includes a first liquid level sensor and a second liquid level sensor; The first liquid level sensor and the second liquid level sensor are located inside the water storage tank, and the second liquid level sensor is higher than the first liquid level sensor in the height direction of the water storage tank. The first liquid level sensor and the second liquid level sensor are connected to the controller.

8. The water purification system according to claim 6, characterized in that, The water storage branch also includes an ultraviolet lamp; the ultraviolet lamp is located at the bottom of the water storage tank and is connected to the controller; and / or; The water storage tank is also provided with a first opening, which is located at the top of the water storage tank.

9. A control method, characterized in that, The method, applied to a controller of a water purification system as described in any one of claims 1 to 8, comprises: In response to a preset command, after controlling the water supply to the first target water level in the storage tank, the air venting mode is activated. The operating exhaust modes include: The pressure stabilizing pump is turned on and at least a portion of the exhaust branch, the water inlet branch, and the wastewater branch are controlled to be open, so that the gas between the water pump and the first check valve is discharged through the exhaust branch, the water inlet branch, and the wastewater branch.

10. The method according to claim 9, characterized in that, In the case where the water purification system includes a water storage tank and a water supply solenoid valve, after operating the venting mode, the method includes: Close the exhaust solenoid valve of the exhaust branch and open the water supply solenoid valve of the water storage branch to replenish water to the first target water level of the water storage tank.

11. The method according to claim 10, characterized in that, The preset command includes one of the following: a venting command issued by the user, a venting command issued by the controller after the water purification system is powered on, and a venting command issued by the controller after the water level in the storage tank is lower than the second target water level. The second target water level is lower than the first target water level.

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